ブタジエン,グラフトポリエチレンとSBRとのブレンド
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概要
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Butadiene grafted polyethylene (GPE), prepared by γ-irradiation of PE in the presence of butadiene, was blended in SBR Rubber. Compounding and Vulcanizing characteristics of the blend rubber were studied, and several physical properties of the vulcanizates were compared with those of original PE blended SBR vulcanizates.<BR>The following points were observed with the GPE blend : <BR>1) GPE facilitates the open mill mixing and compounding processes.<BR>2) Mooney viscosities of the compounds were lowered but the vulcanization rates were increased.<BR>3) No phase separation and bleeding of GPE from the compound was observed.<BR>4) Hardness, tensile stress, tear-strength, abrasion resistance of GPE blended vulcanizates were better than those of control PE blended vulcanizates.<BR>5) The tensile hysteresis loss of the vulcanizates of GPE and PE blends were of much the same order.