Properties of Polysilane and its Industrial Application;Fusion and Antioxidant Effects on Polyolefin Resin

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  • ポリシランの特性とその工業利用；ポリオレフィンの融着性向上，及び酸化防止効果
  • ポリシラン ノ トクセイ ト ソノ コウギョウ リヨウ : ポリオレフィン ノ ユウチャク セイコウ ジョウ,オヨビ サンカ ボウシ コウカ

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<p>Polysilanes, which have silicon-silicon bond chain, have attracted considerable attention due to theirusefulness such as precursors for thermally stable ceramics materials, microlithography and so on. Osaka GasChemicals has found that the reduction of dichlorosilane with Mg metal in the presence of LiCl and Lewis acidwas highly useful synthetic method for polysilanes.This review deals with an applied research of polysilane, that is, the effects of polysilane-coating on theinterface of electrofusion type pipe joint（EF） and polyethylene（PE） pipes. The fusion strength greatlydepends on the amount of sand which adheres to the interface during field works, because there is no flowof melted resin at the fusion interface. It was found that a kind of polysilane on the fusion interface keptthe fusion strength even if there was some amount of sand. The reasons were examined from chemical andphysical points of view. Polysilane molecule permeated into the PE resin deeply and hence the PE resins of thepipe and EF joint are thought to be thoroughly mixed with each other. That effect was also observed in case ofpolypropylene and cycloolefin polymers.</p>

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