45 1767 01 Silastic Sa 9940 30 Liquid Silicone Rubber

SILASTIC™ SA 9940-30 Liquid Silicone Rubber is a self-adhesive, injection-molding elastomer, developed to provide unprimed adhesion to thermoplastic substrates such as PBT and polyamide. It enables excellent process performance and short cycle times due to fast curing rates and improved rheology. Due to the variety of existing plastic grades it is recommended to validate adhesion to the targeted thermoplastic type prior to injection molding. How to Use Mixing and De-airing The A and B components are supplied strained and de-aired to be used as lot matched kits. Mix parts A and B in a 1:1 ratio. Meter mix equipment which pumps, meters and mixes the two components without incorporation of air is strongly recommended for production. If air bubbles are entrapped during mixing the mixture must be thoroughly de-gassed under vacuum. Pot Life When Parts A and B are mixed the mixture will remain useable for 72 hours at 25°C (77°F). Cleaning The uncured silicone can readily be removed by most hydrocarbon solvents. Polar solvents, such as ketones and alcohols are not suitable. Curing SILASTIC™ SA 9940-30 Liquid Silicone Rubber cures readily over a wide range of temperatures. The cure time depends on the thickness and the cure temperature used. Cure can be inhibited by contact with certain materials such as amines, sulfur and organotin complexes. Pigmentation This is normally carried out during mixing and dispensing of the two components. XIAMETER™ Color Master Batches are recommended with normal addition levels of 2 to

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