An adhesive silicone rubber composition
A silicone rubber composition and composition technology, applied in the direction of adhesives, non-polymer adhesive additives, adhesive additives, etc., to achieve the effect of fast curing speed
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Embodiment 1
[0093] 100 parts of polydimethylsiloxane ((A) component) with a viscosity of 20,000 mPa.s at 25°C, 40 parts of which have a specific surface area of 200 m 2 / g of fumed silica, 8 parts of hexamethyldisilazane and 1 part of ion-exchanged water were added to the kneader. The ingredients were mixed by agitation for 1 hour at room temperature, then heated to 150° C., and then mixed with heat for an additional 2 hours. Thereafter, the mixture was cooled to room temperature, and then 3.1 parts of 3 )HSiO 2 / 2 and (CH 3 ) 2 SiO 2 / 2 Polymethylhydrogensiloxane ((B) component) with a viscosity of 20mPa.s constituted in a ratio of 67 / 33, 20 parts of (CH 3 ) 3 SiO 1 / 2 , 2mol% (CH 2 =CH)(CH 3 ) 2 SiO 1 / 2 and 40mol% SiO 4 / 2 Consists of a polymethylsiloxane resin ((E) component, hereinafter referred to as resin 1), 0.8 parts of acetylene alcohol to extend the time to onset of curing at room temperature, and 0.3 parts of platinum-vinyl silicon with a platinum content of 0.5% by w...
Embodiment 2
[0103]Except that diisopropyltitanium bis(ethylacetoacetate) (ORGATICS TC-750, produced by Matsumoto Fine Chemical Co.) was used instead of zirconium tetraacetylacetonate ((D) component), by the same method as in Example 1, The silicone rubber composition was prepared in the same manner as described above, and sample sheets for polyurethane resin, phenolic resin and epoxy resin were prepared. Table 1 shows the results of the 90° delamination test and the hardness of the samples prepared 24 hours and one month later by a Type A hardness tester.
Embodiment 3
[0105] In addition to using 15mol% (CH 3 ) 3 SiO 1 / 2 , 20mol% (CH 3 ) 2 SiO 2 / 2 and 25 mol% CH 3 SiO 3 / 2 and 40mol% SiO 4 / 2 The constituted polymethylsiloxane resin ((E) component, hereinafter referred to as resin 2) was used instead of resin 1, and a silicone rubber composition was prepared by the same method as described in Example 1, and the polyurethane resin, Sample sheets of phenolic and epoxy resins. Table 1 shows the results of the 90° delamination test and the hardness of the samples prepared 24 hours and one month later by a Type A hardness tester.
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