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Non-creepable silicone elastomers that can be cross-linked by polyaddition and their use for making seams in the field and especially in upholstery materials
Non-creepable silicone elastomers that can be cross-linked by polyaddition and their use for making seams in the field and especially in upholstery materials
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机译:可以通过加聚反应交联的不可蠕变有机硅弹性体及其在现场,特别是在装饰材料中用于接缝的用途
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摘要
A non-drip, preferably self-adhesive, silicone elastomer composition crosslinkable by polyaddition, such as those polyorganosilanes (POS) bearing CSUB2/SUB-CSUB6/SUB≡Si-alkenyl units and ≡Si-H units but excluding fluorinated POS. The composition includes at least a thixotropic additive containing at least a fluorinated resin, preferably based on polyfluoroethylene (PTFE). The composition may be prepared from a Si-Vi polydimethylsiloxane (PDMS) and a Si-H PDMS crosslinked by platinum catalysis. Polytetrafluorethylene, a filler, particularly one containing silicone, optionally a ternary adherence promoter such as vinyltrimethosilane/glycidoxypropyltrimethoxysilane/butyl orthotitanate, and other typical additives may be added to the composition. The composition (not excluding the fluorinated POS as a possible constituent in the composition) may be used to produce joints in situ and/or as an adhesive, particularly in upholstery.
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