Room-temperature vulcanized one-component dealcoholized silicone rubber sealant and preparation method thereof
A technology of room temperature vulcanization and silicone rubber, which is applied in the direction of chemical instruments and methods, adhesives, adhesive additives, etc., can solve the problems of decreased curing performance, difficult bonding performance, poor storage performance and bonding performance, and achieve improved bonding Good performance, good yellowing resistance, and the effect of solving yellowing
Active Publication Date: 2014-03-19
SUZHOU TIANSHAN NEW MATERIAL TECH
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Abstract
The invention discloses a room-temperature vulcanized one-component dealcoholized silicone rubber sealant and a preparation method thereof. The sealant comprises the following components in parts by weight: 100 parts of (A) alpha, omega-dihydroxyl polydimethylsiloxane, 10-30 parts of (B) simethicone, 5-10 parts of (C) a cross-linking agent, 1-5 parts of (D) a silane coupling agent, 50-150 parts of (E) reinforcing filler, 0.5-3 parts of (F) a catalyst and 0.5-2 parts of (G) storage stabilizer. Due to addition of the silane coupling agent containing various active functional groups, the defect that common dealcoholized silicone rubber sealant cannot have good adhesion performance and good storage performance at the same time is overcome, and storage performance is not affected when the adhering performance is improved. In addition, as the sealant uses the titanate catalyst with low yellowing property, the sealant has excellent yellowing resistance, the defect that common dealcoholized silicone rubber sealant is easy to yellow is overcome, and the sealant provided by the invention can be widely applied to adhering and sealing in the industries such as electronics, automobiles and home appliances.
Application Domain
Non-macromolecular adhesive additivesOther chemical processes
Technology Topic
Ptru catalystSilicone oil +11
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PUM
Property | Measurement | Unit |
Viscosity | 20000.0 | mPa·s |
Viscosity | 500.0 | mPa·s |
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