Our High-Performance Fillers have already proved their worth for decades, as they can give astounding functional and / or optical properties to polymer systems.

However, the requirements for modern paints, coatings, adhesives, and plastics increase constantly. Thanks to our many years of experience in the processing and refining of mineral raw materials, we can offer tailor-made filler solutions for polymer-bound systems.

Our High-Performance Fillers are available in different grain sizes. Our product range also includes particle size-optimized filler packages for higher filling levels as well as filler mixtures. Many of our functional fillers are surface modified. These are easier to incorporate into a polymer than uncoated products. An optimum bonding between polymer and High-Performance Filler is achieved by a coating agent specially adapted to the polymer system. This leads to a significantly better homogenization and thus to even better mechanical and thermal properties.

Application

The variety of our products ranges from quartz sand, kaolin, and feldspar to special products made from minerals like wollastonite, cristobalite, silica, mica and others.

Our High Performance Fillers can also be found in paints, varnishes and lacquers as well as in various technical plastic applications and even in the dental field.

E – mobility

The future is electric

A look into the future shows: the need for mobility will continue to grow. Therefore, different mobility models will have to be developed for the city and the long distance. Partially or fully electrified serial production vehicles are very popular.

The vehicles oft the future must become quieter, lighter and more energy-efficient, regardless of the type of drive. Plastics have long been the material of choice in automotive engineering for reducing weight. The proportion of plastic parts used will continue to rise in the future. In particular, thermosets and thermoplastics will increasingly replace steel, aluminium and cast iron. Higher mechanical strengths of plastics are required. This is where our High Performance Fillers come in because their use can have a targeted effect on the properties of polymer systems.

 

https://youtu.be/P9sfsOBmz20

 

Highest standard for the safe journey

In general, the number of E&E applications for automation and networking in the automotive sector is steadily increasing. However, the area of alternative drives holds great potential for heat dissipating plastics. In many of these applications, the issue of heat generation and its effective dissipation poses a major challenge. For example, thermally conductive plastics could be used to improve the efficiency of batteries.

Local overheating during charging and discharging can thus be avoided, while at the same time improving overall heat management. Effectiveness and service life of the battery are increased. The same applies to the use of thermally conductive plastics in charging stations and powder electronics.

The clever selection and combination of fillers in polymers can offer a technically and economically more sensible alternative to metals.

High Performance Fillers for electrical and electronic applications

Whether in industry, medicine, consumer electronics or the automotive sector, innovative developments in electronics influence the economic development of different industries. Electrical and electronic applications play an important role in our technological and digital everyday life. The demands placed on electrical power and mechanical strength are increasing all the time. As electronic components become smaller and smaller, completely new challenges also arise. High Performance Fillers can make a major contribution to influencing certain properties.

Our surface-modified mineral flours, for example, have long proven their worth in the manufacture of thermosets for use in medium-voltage technology. By using ATH or kaolin, expensive and environmentally harmful flame retardants can be significantly reduced in some applications.

Paints and Coatings

High Performance Fillers for building protection

Many of our high-grade raw materials and products provide a valuable service as high-performance fillers in building protection for example:

• high covering power
• adjust the matting effects
• excellent crack bridging
• pure white and brilliant colors

https://youtu.be/P9sfsOBmz20

TREMIN® wollastonite and MICA muscovite mica

As of a certain layer thickness, emulsion paints and plasters can have a tendency to increased cracking. The absence of cracks up to a layer thickness of 900 µm must be guaranteed for facade paints. Lamellar fillers, such as mica and talcum, have been used for some time to ensure this. With a standard type of mica, dry layer thicknesses of 1150 µm can be achieved without cracking. The acicular wollastonite TREMIN® is an excellent alternative to these lamellar fillers. Experiments with TREMIN®, a surface-modified, acicular, milled and very white wollastonite, have shown that good reinforcing properties already occur with the addition of only 3 wt%. Incorporation into an emulsion can be further optimized through specific surface coating with TREMIN®. A silicone resin facade paint with a dry layer thickness without cracking of > 1,500 µm can be manufactured this way.

High-performance fillers as wood coatings and decorative coatings

• show transparent behavior even in clear lacquer systems
• offer the possibility of high filling degrees at low degree of blurring
• enable random adjustability of the gloss
• guarantee a high degree of surface hardness
• influence positively abrasion resistance and scratch resistance

TREFIL® anhydrite and MICROSPAR® feldspar for finishing of wood surfaces

Cellulose nitrate lacquers are often used for finishing the wood surfaces of furniture. They are characterized by easy processing, fast drying due to the high solvent content and very good wood firing. A formulation with TREFIL 1313-400 and MICROSPAR 1380-600 brings positive results such as:

• good processing viscosity
• transparency on oak and walnut
• high filling levels with good transparency – cellulose and zinc stearate can be saved
• improved abrasion resistance

High Performance Fillers in industrial coatings

The special properties of our High Performance Fillers recommend their use in industrial coatings. The high degree of surface hardness, the possibility of a low-cost formulation and the excellent prerequisites for corrosion protection systems due to their excellent weather resistance speak for themselves.

Effective corrosion protection with TREMIN® wollastonite and MICA muscovite

Since the classification of zinc phosphate as an environmentally hazardous substance attempts have been made to formulate epoxy corrosion protection coatings with alternative corrosion protection pigments. The best results in an aqueous two-component epoxy single-layer covering lacquer have been achieved with a combination of the silanized, blocky TREMIN® 283-600 AST and the lamellar MICA. In EP single-layer lacquer systems the filler combination results in functional pigments being able to be waived entirely or at least partially. In addition, the corrosion protection properties are improved.

Functional filler TREFIL® 1313-600 in two-component PU high solid systems

High solid systems are an excellent option for VOC-compliant painting. With TREFIL® 1313-600 and a silanized variant based on a natural anhydrite, possibilities present themselves of achieving a formulation with good visual, mechanical and corrosion protection properties and thereby reducing the VOC content.

The use of TREFIL® 1313-600 in a two-component PU high solid top paint coat achieves the following improvements in comparison to a normally used synthetic barium sulphate:

• A clear reduction in the VOCs
• Lower paint viscosities with very good surface properties
• High gloss with low haze
• Excellent adhesion to the substrate
• A clear reduction in blistering
• Very good corrosion protection
• An increase in the yield

Silicate fillers in powder coatings

Silicate fillers are used in powder coatings to influence the mechanical properties and the surface texture as well as for economy reasons. The excellent chemical resistance of the minerals quartz, cristobalite and feldspar recommend their use in technical powder coatings, e.g. for corrosion protection. A specific surface treatment of our fillers additionally reinforces the corrosion protection.

SIKRON® cristobalite in polyester resin bonded powder coating systems

The influence of SIKRON® cristobalite on a polyester resin bonded powder coating system with different filler contents (PVC Pigment Volume Concentration) not only brings about variable matting effects, but also an increase in the surface hardness and an increase in the yield in comparison to BaSO4. With reference to the cracked surface texture of the SIKRON® SF 4000 particles, the matting properties of this filler are identifiable in the powder coating. Increasing the PVC also causes an improvement to the mechanical properties in the powder coating.

Perfect products for the health and personal care

Due to the company's long experience as well as the consistently high product quality in combination with innovative refinement processes, our high-purity products are also suitable for applications in the pharmaceutical industry, dental applications, and cosmetics.

Our products are used in tablets, ointments and pastes, personal care products and even in the dental industry.

Pharmakaolin - good for the skin!

Peel-off face mask

Recently, our pharmakaolin is also included in a cosmetic "peel-off mask" for deep pore cleansing of the facial skin. The skin is revitalized and appears more vital and radiant.

For more information, see this http://www.youtube.com/watch?v=fhLrG0M6E84

Skin powder

Pharmakaolin balances skin irritations and provides a mattifying and natural-looking finish on the skin due to its hydrophobic properties.

Soaps and shower gels

Pharmakaolin creates a fresh and pleasant skin feel with a creamy texture for a silky-luxurious lather.

Deodorants

As our Pharmakaolin is completely odorless, it is an excellent fragrance carrier. It also has an antibacterial effect due to its excellent moisture absorption.

Pharmakaolin B 860 in pharmaceutical applications

Consistently high product quality is of particularly significant importance in the pharmaceutical applications segment. Our pharmakaolin B 860 is a brilliant white clay that meets all requirements of the Pharmacopoeia Europaea for 'kaolin, heavy/kaolinum ponderosum' for external and internal application. This requirement profile is verified and certified for each batch by an external laboratory at the Quarzwerke Group. Pharmakaolin B 860 is characterized by a very high content of kaolinite, with all the advantages of this natural mineral. This makes pharmakaolin B 860 a valued and proven raw material in the pharmaceutical industry for production of pastes, tablets, powders, and ointments.

The properties:

• White
• Odourless
• Fine particles
• Soft touch and feel
• Insoluble in water and organic solvents
• Easily dispersible in water
• High binding capacity for liquids
• Non-hygroscopic
• The product shelf life of pharmakaolin B 860 is practically unlimited with regard to its mineral properties. If stored in a dry place in its undamaged original packaging, this concerns all properties listed in our analysis certificates in accordance with Ph.Eur., except for 'microbial impurities'. Our experience to date has shown that, subject to dry, dark storage, at temperatures of about 20°C and in its closed original packaging, the microbial values remain within the limits of the monography 'kaolin, heavy' of the Ph.Eur. for at least 3 years.

 Pharmakaolin B 860 във фармацевтичните приложения

Постоянно високото качество на продукта е от особено голямо значение в сегмента на фармацевтичните приложения. Нашият pharmakaolin B 860 е брилянтна бяла глина, която отговаря на всички изисквания на Phamacopoea Europaea за „каолин, тежък/kaolinum ponderosum“ за външно и вътрешно приложение. Този профил на изискване се проверява и сертифицира за всяка партида от външна лаборатория на Quarzwerke Group. Pharmakaolin B 860 се характеризира с много високо съдържание на каолинит, с всички предимства на този естествен минерал. Това прави Pharmakaolin B 860 ценена и доказана суровина във фармацевтичната индустрия за производство на пасти, таблетки, прахове и мехлеми.

Свойствата:

• Бял
• Без мирис
• Фини частици
• Меко докосване и усещане
• Неразтворим във вода и органични разтворители
• Лесно диспергируем във вода
• Висока способност на свързване на течности
• Нехигроскопичен
• Срокът на годност на продукта на фармаколин В 860 е практически неограничен по отношение на неговите минерални свойства. Ако се съхранява на сухо място в ненарушена оригинална опаковка, това се отнася за всички свойства, изброени в нашите сертификати за анализ в съответствие с Ph.Eur., с изключение на „микробни примеси“. Досегашният ни опит показва, че при съхранение на сухо и тъмно, при температури около 20°C и в затворена оригинална опаковка, микробните стойности остават в границите на монографията „каолин, тежък“ на Ph.Eur. поне 3 години.

Fillers for silicone dental impression composites

Particularly in the dental products sector the high-grade raw materials of the Quarzwerke Group play an important role due to their consistently high quality. The cristobalite-based types SIKRON® SF 3000, 6000 and 8000 and their SILBOND® variants, which are surface-treated with suitable silanes, are used preferentially in the silicones for dental impression composites. The selection of suitable fillers enables a very high degree of filler content with an acceptable viscosity of the impression compounds. As a result of this, maximum precision of the impression can be accomplished by minimizing the reaction shrinkage. The very white cristobalite allows excellent pigmentability and the desired elasticity and Shore hardness of the impression compound.

Perfect raw material quality

It must be emphasized that all quartz and cristobalite micronized powders mentioned here contain a very low proportion of coarse particles. The silicone polymers reinforced by SIKRON® and SILBOND® are characterized by the following properties:

• Adjustable elasticity and Shore hardness
• Adjustable thermal expansion
• Very good pigmentability
• Reduced reaction shrinkage
• A new class of fillers for dental composites for dental composites

Resin-based composites are aesthetic and are widely used in comparison to conventional materials, such as amalgam. Another advantage is that composites can be made in a multitude of true to life shades and are almost indiscernible in the case of restored teeth. In addition, dental composites reinforce the natural teeth, because they adhere very well to the tooth surface. In addition to good physical properties, like bending strength and hardness, MICROSPAR® products have the following advantages:

• Good hardening depth
• Low shrinkage
• Excellent workability even with high filler contents
• High transparency
• Easy to smooth and polish

Your partner for polymer applications

Polymers are used in many areas of our everyday life. The use of our raw materials is extremely varied and ranges from their use as additives to High Performance Fillers (HPF).

In particular the stable raw material quality of our high-grade products makes HPF The Mineral Engineers the ideal partner for industry in this area. The innovative power that comes from our constant research and development of new processes for the refining of various minerals is an important aspect of our activities. You can also benefit from an experienced and innovative partner.

Premium fillers for composites

The Quarzwerke division HPF The Mineral Engineers has been supplying the solid surface and engineered stone market with its high-performance fillers with great success since the 1980s. The mineral fillers used here for composites are primarily quartz (modifications) and aluminium hydroxide. The physical and chemical properties of quartz significantly influence the surface condition of the composite materials. These products are accordingly solid, non-porous, homogeneous and can be adhered jointlessly, which provides a great deal of design freedom. Reinforcing fibers can therefore be waived.

Our product range in this area:

• ATH (HYDRAFIL®)
• Part-calcinated silica sand (white silica)
• Colored sands (COLORITQUARZ)
• Cristobalite (SILBOND®)
• White fused alumina (SEPASIL®)
• Fused silica (AMOSIL®)
• Wollastonite (TREMIN®)

 

Natural silicas (silica sands, quartz powders and double-crushed quartz chips)

These products are widely used in reaction resins such as PMMA and UP, in solid-surface and engineered-stone applications.

High-performance fillers for thermoset applications

High-performance fillers play a prominent role in the production of thermosetting plastics. The high demands made of the many types of thermosets, such as high strengths and high degrees of thermal stability, can be met only by functional fillers.

Epoxy resin applications

Because of their good adhesion, good thermal stability, chemical resistance and excellent electrical properties, epoxy resins have been important for decades for electrical engineering and electronics.

In electronics, epoxy resin molding materials are used as jacketing systems, laminating resins for circuits and auxiliary materials for PCB fabrication. In electrical engineering, epoxy resins are used in converter construction and for the fabrication of insulators and dry-type transformers.

The requisite mechanical, thermal and electrical characteristics of epoxy resin are determined largely by the functional filler selected. Fillers based on quartz, fused silica, wollastonite, mica, aluminium hydroxide, and special fused alumina are used.

MILLISIL® W 12 / SILBOND® W 12 EST

The high-performance fillers SILBOND® silanized micronized quartz powder and MILLISIL® quartz powder have proven themselves in epoxy resin systems over several decades. On the one hand they are used on account of their outstanding mechanical properties and on the other they make an important economic contribution. High-performance fillers based on quartz are characterized by the following properties:

• High weather resistance and chemical resistance
• High mechanical strengths
• Excellent processability
• Low thermal expansion

Because of the excellent incorporation of surface-modified quartz powder (SILBOND® W 12 EST) into the epoxy polymer system, this has been the standard for weather-resistant outdoor applications for a long time. Nowadays SILBOND® quartz powder is also increasingly being used for 'indoor cast resin parts', among other things for visually glossy high-grade product surfaces.

SILBOND® 126 EST

A further development of the established silanized quartz powders SILBOND® W 12 EST is SILBOND® 126 EST, which offers an increase in the filler content with constant viscosity.

 

TREMIN® wollastonite for crack-sensitive applications

Blocky and acicular TREMIN® wollastonite is characterized by good electrical properties, low thermal expansion, and very good reinforcing properties.

MICA, TREMICA® muscovite and TREFIL® phlogopite (mica)

Lamellar mica is characterized by good electrical insulating properties, very high breakdown strength and very good thermal stability.

SEPASIL® aluminium oxide for epoxy

The outstanding feature of aluminium oxide is its resistance to hydrofluoric acid. In addition, the material is characterized by good electrical properties, very good thermal conductivity, and a high degree of whiteness.

PUR-RRIM applications: TREMIN® 939 wollastonite

Long-needled wollastonite TREMIN® 939 offers decisive advantages in PU-RRIM:

• High tensile strengths
• High scratch resistance
• Very good high gloss paintability

Through the use of the functional fillers TREMIN® wollastonite, MICA muscovite, TREFIL® phlogopite, Chinafill kaolin, MILLISIL® quartz powder, SIKRON® micronized quartz powder and SILBOND® silanized micronized quartz powder, the following advantages can be achieved in phenolic resin applications for brake linings:

• Reduced wear
• Lower noise generation
• Lower degree of vibration
• Better braking stability
• Uniform abrasion (low coefficient of friction behavior)

High-performance fillers for elastomer applications

Elastomers are dimensionally stable but elastically deformable polymers, e.g. fluoroelastomers and silicones. These polymers are used wherever high elasticity of the end product is important, for example, in sealing rings, tires, cables, hoses, conveyor belts, floor coverings and in medical technology. Our fillers have a considerable influence on the mechanical properties (Shore hardness, modulus of elasticity, tensile strength, etc.), but also on the electrical properties (breakdown strength) and can improve these. In addition, they allow good to very good pigmentability of the elastomer.

Fluoroelastomer applications with TREMIN®

Fluoroelastomers are highly specialized materials for sophisticated areas of application in the construction of engines, motors, machinery, and chemical plant. They make seals resistant to various chemicals and make high-temperature applications at all possible. The short-needled silane-coated wollastonite powder TREMIN® 283 has been used successfully for many years as a functional filler, the focus being on tensile strength and dimensional stability in fluoroelastomers to set the degree of hardness. Besides good reinforcement TREMIN® 283 also provides the advantage of pigmentable, bright mixtures in fluoroelastomers. The fluoroelastomers optimized in this way are ideal for the above-mentioned applications under special conditions, such as high degrees of mechanical stress and high temperatures. The fluoroelastomers reinforced by TREMIN® 283 are characterized by the following properties:

• Excellent dimensional stability
• Very good pigmentability
• High tear propagation resistance
• High tensile strength

CHINAFILL in rubber applications

Our daily lives are inconceivable without the extremely stretchable material rubber. By rubber we understand vulcanized natural or synthetic rubbers, such as styrene-butadiene (SBR), nitrile-butadiene (NBR) and ethylene-propylene-diene (EPDM). The applications for rubber polymers can be found wherever elasticity is of special importance, e.g. in tires, floor coverings, hoses, cables, conveyor belts and in diverse household products. Lamellar kaolin, being chemically inert , is highly weather resistant. The coarser types of kaolin (so-called 'soft clays') have a reinforcing effect in rubber; the fine types of kaolin ('hard clays') even have a very pronounced reinforcing effect. Tensile strength, tear propagation resistance and the modulus of elasticity are increased by the addition of these kaolins. In addition, the bright CHINAFILL kaolins allow the production of easily pigmentable products. In the case of cables, kaolin also causes an increase in the insulation properties. The rubber plastics reinforced by CHINAFILL are characterized by the following properties:

• Excellent tensile strength
• High tear propagation resistance
• Increased modulus of elasticity
• Very good pigmentability
• Enhanced electrical insulation properties

SIKRON® and SILBOND® in silicone applications

Silicone is an elastomer that combines the special properties of silica and rubber: it is extremely elastic, very thermally stable, hydrophobic and has a high electrical breakdown strength. In contrast to rubber, silicones retain their properties over a wide temperature range. Silicones are therefore used for seals, insulation and mouldings that are subjected to high thermal stresses. Medical technology, the electronics industry and the household would be inconceivable without them. Quartz and cristobalite are inert and on account of their structure tend to be round and compact in contrast to wollastonite, which is acicular, and kaolin, which is lamellar. In addition to the untreated types of the SIKRON® group, the surface-treated SILBOND® types are also available.

Silica is used mainly for seals and cables, in particular the type SIKRON® SF 600 and the coated variants SILBOND® 600 TST and SILBOND® 600 RST. The surface treatment of the filler provides for low viscosity during the processing of the silicone. Specific influencing of the electrical and mechanical properties of the silicone part can be achieved through the use of this filler (e.g. increasing the electrical insulation behavior).

With SIKRON® and SILBOND® filled silicone polymers can be characterized by the following properties:

• adjustable elasticity and shore-hardness
• adjustable thermal expansion
• very well colorings characteristics
• increased electrical insulation properties
• decreased contraction during reaction

High-performance fillers for adhesives

In the area of application of adhesives, our raw materials provide a valuable service as functional fillers, by means of which even the adhesive capability can be decisively improved. Wollastonite and mica, for example, act in this case as reinforcing fillers for STP adhesives and among other things bring about an improvement in the Shore hardness. Furthermore, our high-grade silica and cristobalite powders and a series of specially developed calcium carbonates (Calatem) with low moisture ensure the long-term stability of silane terminated adhesive systems (STPs).

Our fillers for adhesive applications:

• SILBOND® and AMOSIL® fused silica for epoxy resin adhesives for electrical applications
• Kaolin CHINAFILL, silica flour, fused silica, and surface-treated wollastonite (TREMIN®) for industrial adhesives
• SILATHERM 1466 and SILATHERM Plus are particularly suitable for thermally conductive adhesives. With thermal conductive adhesives as a thermal interface, the thermal stress during bonding can be reduced and, in addition, a permanent mechanical fixation can be achieved.

Silica sand for polymer concrete

In a polymer concrete, our high-grade silica sands act together with a binding agent that holds the mineral aggregate together. The silica sand can amount to as much as 90% of the volume. With a mineral casting, in particular the good attenuation properties and the temperature stability in conjunction with the high degree of design freedom and the cost advantages are valued and popular. The areas of application therefore range from ultra-high strength machine beds to polymer concrete channels and polymer concrete pipes. Another advantage: due to the shorter polymer curing times of less than one day in comparison to classic concrete, long blocking times can be avoided, for example, in road and bridge construction.

The Quarzwerke Group —a valued partner

The fact that our silica sands, when used in polymer concrete, must have a certain grain size due to the binding in a synthetic resin matrix, makes the Quarzwerke Group—with its individual grading curve design and the stable quality of its raw materials—a valued and proven partner of industry.

High-performance fillers for thermoplastic applications

The raw materials of the Quarzwerke Division HPF The Mineral Engineers perform valuable services as fillers in many thermoplastic applications. The reason: the requirements made of modern plastics, e.g. in the automotive industry, are constantly increasing. The property profiles demanded can no longer be met by polymers alone. They are therefore reinforced with high-grade functional fillers on the basis of granular cristobalite, acicular wollastonite and the lamellar micas muscovite and phlogopite. These high-performance fillers make a decisive contribution towards improving the mechanical and thermal properties of the compounds. In the polymer system, and therefore in the finished part, these functional fillers result among other things in increased scratch resistance, a reduction in the mechanical and thermal distortion as well as an improvement in the tensile strength and tensile modulus with retention of the resistance to shock.

 

Polypropylene applications

Polypropylene is used in a wide range of applications. Among other things it is processed by means of injection moulding into parts for electrical engineering, automotive engineering and household appliances and it is extruded into fibers and film. In the past decade polypropylene has also been increasingly discovered by the automotive industry as being a useful material. Large components, such as side bars, door sill panels and interior trim, are manufactured from these compounds.

TREMIN® reinforced polypropylene compounds

In particular the very good reinforcement properties of the surface-modified, acicular wollastonite TREMIN® 939 have proven themselves in polypropylene systems for years, because compounds with the following properties can be manufactured:

• very good impact resistance combined with high rigidity
• excellent scratch resistance
• high heat deflection temperature
• low shrinkage of the finished parts

MICA muscovite and TREFIL® phlogopite for polypropylene/polyethylene copolymers

The thermal and mechanical properties in polypropylene/polyethylene compounds can be considerably improved by using the lamellar MICA muscovite and TREFIL® phlogopite. A clear reduction in the shrinkage in the two dimensions and an improvement in the thermal distortion sensitivity takes place as a result. An increase in the tensile strength and tensile modulus and an increase in the rigidity with retention of the toughness is also registered.

Polyamide

Polyamide 6 and polyamide 66 are worldwide the most commonly used technical plastics. They are used on account of their high heat deflection temperature, high degree of hardness and rigidity. In addition, polyamide 6 is characterized by its good attenuation behavior. These mechanical properties are determined largely by the fillers selected.

TREMIN® wollastonite for PA compounds

TREMIN® 283 short-needled wollastonite powders coated with aminosilane have been successfully used for many years as functional fillers for polyamides whenever freedom from distortion is required. Higher degrees of rigidity can be achieved in this instance with the long-needled TREMIN® 939 grades. The proportion of these fillers in the compounds is between 20 and 40 wt%. The polyamides reinforced in this way provide a multitude of possibilities for the construction of low distortion, rigid moulded parts and are used, for example, in hub caps, engine covers, air filter bodies and electrical appliance components. The compounds reinforced with TREMIN® are characterized by their excellent rigidity, high heat deflection temperature, thermal stability, and excellent dimensional stability (TREMIN® 283). This also achieves high impact resistance and excellent paint adhesion.

Fillers for temperature resistant applications

The use of surface-modified, lamellar TREMICA® muscovite and TREFIL® phlogopite influences the mechanical and thermal properties in the polyamide compound through a series of positive effects. In addition to increased tensile strength, enhanced rigidity and reduced shrinkage, an improved shrinkage isotropy and a distinct reduction in the thermal distortion sensitivity can be registered.

SILATHERM® for thermally conductive thermoplastics

For thermoplastics, SILATHERM® 1360 and SILATHERM Advance are particularly suitable. The fillers were tested in polyamide and polypropylene. Despite high filling levels, the mechanical properties remain at a very good level.

Improved properties of plastic films

High Performance Fillers based on mineral raw materials are outstandingly suitable for influencing the various desired properties in plastic films. SIKRON® cristobalite, TREFIL® anhydrite and MICROSPAR® feldspar are particularly suitable for this purpose. The functional fillers offer the following advantages:

• outstanding antiblocking combined with good optical properties
• high UV transmission and good IR absorption
• optimized barrier effect

Fillers for grinding and polishing

In the abrasive sector, phenolic resins are mainly used for metal finishing e.g. for grinding wheels, cut-off wheels and as binders for sandpaper. Mainly our high-quality kaolins and calcium carbonates are used in this application. In addition, the use of calcium carbonate improves the spacing between the individual grains. Kaolin, on the other hand, can also be used in urea-bonded abrasives.