Wacker Chemie A.G. introduced various new products.
• Genioplast Pellet P plus: a high-performance additive for the compounding and processing of thermoplastics. Genioplast Pellet P plus improves the viscosity and flow properties of the polymer compound, allowing the compound to be processed more efficiently and at lower cost. It also ensures smooth, easy-to-clean surfaces, according to the company.
• Elastosil Film: an extra thin and immaculate film, is available as roll stock in thicknesses down to 20 microns. It is manufactured in cleanroom conditions without the use of solvents. Elastosil Film also can be used as an electroactive polymer. Under certain conditions, EAPs can alter shape when a voltage is applied.
• Elastosil R 781/80: a silicone rubber filled with tiny magnetic particles—roughly 10 micrometers in size—that are made of ferrimagnetic magnetite material. These are firmly integrated into the silicone rubber matrix and are capable of being magnetized in the presence of a strong magnetic or electromagnetic field, Wacker said. Together with other magnets, this magnetic effect is particularly pronounced.
The new silicone elastomer offers diverse application possibilities. The cured silicone is extremely heat-resistant and withstands temperatures ranging from –40°C to +200°C.
• Elastosil LR 3022/60: a silicone rubber for making seals fully suited for cooling systems. The addition-cure liquid silicone rubber features a very low compression set. The silicone rubber's lasting resilience ensures consistently high leak-tightness in the seal groove. Molded parts made of the new silicone grade can be used as seals or gaskets even when they are directly exposed to hot coolants.
In addition, the silicone rubber exhibits very good low-temperature flexibility down to -45°C. With this combination of temperature and coolant resistance, it offers an alternative to organic elastomers, according to the company.
• Elastosil R 756: solid silicone rubber grades are designed in such a way that their properties unfold by interaction with the heat stabilizers added to the base rubber during the compounding process. The thermal stability of the vulcanizate is influenced by the type and amount of the chosen stabilizer. The new grades can be processed via compression molding, injection molding or extrusion. The latter method, however, requires the use of a suitable heat stabilizer that is compatible with the crosslinker. The Elastosil R 756 can be used both as a base rubber blend without additives and as a ready-to-process compound that already contains effective heat stabilizers.
• Lumisil LR 7600: product range consists of liquid silicone rubber grades that cure to form highly transparent elastomers. Unlike highly transparent thermoplastics such as polycarbonate and polymethyl methacrylate, Lumisil LR 7600 does not tend to yellow, but remains colorless even at high temperatures and under long-term exposure to artificial or natural light, including ultraviolet radiation, Wacker said. In combination with light emitting diodes, entirely new designs and housing structures are possible. Furthermore, the product enables the development of energy- and cost-efficient solutions, for example in general lighting and car headlights.