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In this work,the preparation ofα,ω-dichloride-terminated multi-vinyl branched siloxane 1(yield:57.1%)used for self-healing polymer composites were synthesized via ring-opening of 1,3,5,7-tetravinyl-1,3,5,7-tetramethyl-cyclotetrasiloxane(D_4~(Vi))in the presence of vinylmethydichlorosilane(VM-32).1 was hydrogenated by aluminum lithium hydride(LiAlH_4)to get self-healing monomer 2(yield:79.8%)which contained both Si-H bonds and Si-vinyl bonds.Then hydrosilation occurred between these two bands and finally silicone 3 was obtained,showing the potential of self-healing.
In this work, the preparation of α, ω-dichloride-terminated multi-vinyl branched siloxane 1 (yield: 57.1%) used for self-healing polymer composites were synthesized via ring-opening of 1,3,5,7-tetravinyl-1 1 was hydrogenated by aluminum lithium hydride (LiAlH 4) to get self-healing monomer 2 (yield: 79.8% ) contained of Si-H bonds and Si-vinyl bonds. TEN hydrosilation occurred between these two bands and finally silicone 3 was obtained, showing the potential of self-healing.