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Silicone Rubber Molding: High Tear Strength Makes LSR Chewable

Silicone rubber has excellent high temperature properties and can be used in silicone rubber molding. Silicone rubber molding can operate normally from -50°C to +250°C. This makes silicone rubber components ideal for the automotive industry or high temperature sterilization environments as in medical applications.

Breakthrough Research Presented at Silicone Elastomers US 2011

Professor Tim Osswald, Director of the Technical Advisory Board of SIMTEC Silicone Parts, presented breakthrough research on the viscoelastic behavior of Liquid Silicone Rubber (LSR) at Silicone Elastomers US, the first Silicone Elastomers’ event held in North America.

SIMTEC Silicone Parts to Present at Silicone Elastomers US 2011

Professor Tim A. Osswald, Director of SIMTEC Silicone Parts’ Technical Advisory Board will be one of the prestigious speakers presenting at this year’s Silicone Elastomers US 2011 event. Held at the Hyatt Rosemont Hotel in Rosemont, IL, Professor Osswald will be discussing the viscoelastic behavior of Liquid Silicone Rubber (LSR) at 11:45 CST, Wednesday, December 7th 2011.

LSR Parts | Expansion or Shrinkage of Liquid Silicone Rubber (LSR)

The density or its reciprocal, the specific volume, is important for the shrinkage during processing and is greatly affected by temperature and pressure. The specific volume is often plotted as a function of pressure and temperature, in what is known as a pvT diagram (see image on the left below for an example of a pvT diagram). The measurement is defined in ISO 17744.

Silicone Rubber Parts Weatherproof and Wear Resistant

Semi-crystalline thermoplastic polymers show more order than amorphous thermoplastics. The molecules align in a structured crystalline form. The size of the crystals or spherulites is much larger than the wavelength of visible light, making semi-crystalline materials translucent, rather than transparent. Crystalline regions are small with molecular chains comprised of both crystalline and amorphous regions. The degree of crystallinity in a typical thermoplastic will vary from grade to grade, as for example in polyethylene, where the degree of crystallinity depends on the branching and the cooling rate.

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