Modification of fluoroelastomers based on TFE-P copolymer to improve cure speed, physical properties and mold release

This article presents research conducted to develop modified TFE-P that improves curability and mold release, and provides good amine resistance and compression set. It is demonstrated that a cure site monomer can easily be copolymerized into the TFE-P backbone to solve the abovementioned performance problems, while maintaining original TFE-P characteristics of resistance to heat, steam, and organic and inorganic acids and bases. In addition, it is possible to color the material

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Achieving savings in the post-curing process of fluoroelastomer compounds prepared by injection molding

Commonly, rubber compounds based on FKM elastomers are subjected to two stages of cure in order to optimize physical and mechanical properties. Compression set and tensile strength are the main properties usually improved by the post-cure stage. The initial stage is called curing, and is performed under pressure in a mold during the injection molding process. A secondary stage called post-cure is performed in an oven under air or nitrogen atmosphere in order to complete crosslinking reactions. This removes volatile by-products and additives to obtain enhanced, stable physical and mechanical properties

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Lamination technology for multi-layer hose

Fluoroelastomer lamination technology for multilayer automotive hose constructions is said to be ideal for use in high-pressure, high-temperature areas near the engine, where they are also exposed to NOx, SOx, engine oils or other aggressive automotive fluids. AGC Chemicals Americas՚ AFLAS FEPM fluoroelastomers can withstand continuous service temperatures up to 200°C and have excellent acid, base, amine and steam resistance.

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