{"product_id":"siliconen-condensatie-dc-3481-fast","title":"Dow SILASTIC RTV-3481 Fast – Dry Condensation Mold Rubber for Concrete \u0026 Casting Resins","description":"\u003ch2\u003ePremium Dry Condensation Silicone Rubber for Professional Concrete and Casting Resin Applications\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDow SILASTIC RTV-3481 Fast\u003c\/strong\u003e is a two-component condensation-curing (RTV-2) mold rubber that cures at room temperature into a strong, dry silicone rubber. The set combines the RTV-3481 A component with the fast RTV-3081 F catalyst, mix ratio 100:5 by weight. With a Shore A hardness of 23, an off-white final color and a pot life of 30 to 45 minutes at 23 °C, the material is highly flowable and self-de-airing. Final mechanical properties are reached after 7 days. The rubber is ideally suited to the detailed reproduction of figures, ornaments and model-making, and to molds for casting concrete, plaster, wax, soap and casting resins such as polyurethane and polyester.\u003c\/p\u003e\n\u003cp\u003eThe RTV-3081 F is the fast catalyst; for a longer mold life with polyester casting resin, Dow offers the RTV-3081 R, available from us as \u003ca href=\"\/en\/products\/dow-silastic-rtv-3481-r-condensation-silicone\"\u003eDow Silastic RTV 3481 R\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHigh tear strength – 24 kN\/m:\u003c\/strong\u003e withstands repeated demolding of complex replicas without tearing.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHigh elongation at break – 543%:\u003c\/strong\u003e high elasticity makes releasing undercuts and complex shapes easy.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLow linear shrinkage – 0.2 to 0.4%:\u003c\/strong\u003e dimensionally accurate castings that retain fine detail.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eGood tensile strength – 4.6 MPa:\u003c\/strong\u003e durable rubber that survives long production runs.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFast cure – demolding time maximum 6 hours:\u003c\/strong\u003e short turnaround thanks to the fast RTV-3081 F catalyst.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHighly flowable – 22,100 mPa·s mixture:\u003c\/strong\u003e self-de-airing and easy to pour around fine details.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMolds for concrete and concrete ornaments\u003c\/li\u003e\n\u003cli\u003eMolds for polyurethane and polyester casting resin\u003c\/li\u003e\n\u003cli\u003eCastings in plaster and porcelain plaster\u003c\/li\u003e\n\u003cli\u003eWax and candle production\u003c\/li\u003e\n\u003cli\u003eSoap casting\u003c\/li\u003e\n\u003cli\u003eReproduction of figures and sculptures\u003c\/li\u003e\n\u003cli\u003eModel-making and industrial prototypes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProcessing Instructions\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eStir the A component thoroughly before use, as filler may settle during prolonged storage.\u003c\/li\u003e\n\u003cli\u003eWeigh 100 parts A component and add 5 parts RTV-3081 F catalyst (variation between 4% and 6% possible).\u003c\/li\u003e\n\u003cli\u003eMix the A and B components thoroughly by hand or mechanically until the catalyst is fully dispersed. Do not mix for an extended period and keep the temperature below 35°C.\u003c\/li\u003e\n\u003cli\u003eDe-air under vacuum if required; the mixture expands 3 to 5 times, so choose a large container. Excessive vacuum removes volatile components and may impair curing.\u003c\/li\u003e\n\u003cli\u003ePour the mixture onto the original within the pot life, avoiding air entrapment.\u003c\/li\u003e\n\u003cli\u003eAllow to cure at room temperature (22 to 24°C); the mold can be demolded after a maximum of 6 hours and final properties are reached after 7 days. A lower temperature lengthens the cure time, while higher temperature and humidity shorten the pot life.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eAt 4% B component the material cures more slowly, giving air bubbles more time to escape. At 6% curing proceeds noticeably faster. Never mix more than you can process within the pot life.\u003c\/p\u003e\n\u003cp\u003eFor a brush-on or spatula mold, add 0.6 to 2% (typically 1%) \u003ca href=\"https:\/\/www.siliconesandmore.com\/products\/thixo-c\"\u003eThixo C\u003c\/a\u003e. This thickens the mixture so it can be applied with a spatula; in that case provide the mold with a support shell of \u003ca href=\"https:\/\/www.siliconesandmore.com\/products\/gips-gipsverband\"\u003eplaster bandage\u003c\/a\u003e, \u003ca href=\"https:\/\/www.siliconesandmore.com\/nl\/epoxy-steunkap.html\"\u003emodeling epoxy\u003c\/a\u003e or \u003ca href=\"https:\/\/www.siliconesandmore.com\/products\/acryl-hars-set\"\u003eacrylic resin\u003c\/a\u003e with \u003ca href=\"https:\/\/www.siliconesandmore.com\/products\/triaxiaal-glasvezeldoek\"\u003eglass fabric\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This is an industrial product and is not intended for food contact, dental applications or skin molding.\u003c\/p\u003e\n\u003ch3\u003eShelf Life\u003c\/h3\u003e\n\u003cp\u003eStored cool, frost-free and in closed packaging, the shelf life is at least 1 year.\u003c\/p\u003e\n\u003ch3\u003eAbout the Manufacturer\u003c\/h3\u003e\n\u003cp\u003eDow is a world market leader in the development and production of silicones for industrial and technical applications. The SILASTIC mold rubbers are known for their reliability and detail reproduction.\u003c\/p\u003e\n\u003ch3\u003eProfessional Support\u003c\/h3\u003e\n\u003cp\u003eUnsure which catalyst, dosage or support-shell construction suits your application? Our specialists are happy to help. Contact us for personal advice on your mold or casting project.\u003c\/p\u003e","brand":"Dow Corning","offers":[{"title":"1.05 Kg Set (A+B)","offer_id":49531887649109,"sku":"S10437","price":33.5,"currency_code":"EUR","in_stock":true},{"title":"5.25 kg set (A + B)","offer_id":49531887681877,"sku":"S10932","price":160.55,"currency_code":"EUR","in_stock":true},{"title":"26.25 kg set (A + B)","offer_id":49531887714645,"sku":"S10933","price":747.39,"currency_code":"EUR","in_stock":false},{"title":"210 kg set (A + B)","offer_id":49531887747413,"sku":"S10934","price":5757.65,"currency_code":"EUR","in_stock":true},{"title":"DC 3081-F (250 Gr.- B comp)","offer_id":49531887780181,"sku":"S10095","price":8.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/4096\/0341\/files\/dow-corning-dow-silastic-rtv-3481-fast-droog-condensatie-vormrubber-48098056831317.jpg?v=1780499093","url":"https:\/\/siliconesandmore.com\/en\/products\/dow-silastic-rtv-3481-fast-condensation-silicone","provider":"siliconesandmore","version":"1.0","type":"link"}