ポリエチレン球晶消滅の高速化処理

概要

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Usually, polyethylene(PE)consist of clystalline polymer having lamella structural units. Now, this article investigates an improved PE whose spherulites are eliminated completely by heat mixing of PE with Li2CO3 on 2axis roller.The PE processed in this unique manner is free of spherulites, has a uniform structure and excellent electrical, mechanical and thermal properties. However, the drawback of this treatment was that it required a high temperature(170℃)and long processing time(=90min).The new method can treat a low temperature(117℃)and high speed(=3min). The conventional treatment processed the molecular chain of PE indirectly, while the new method treated sphrulites directly. The experiment demonstrated that this method can process with high speed at low temperature.Further, the data from a series of the experiments with dilatemeter test(specific volume test)and differential thermal analysis(DTA : exothermic reaction test)demonstrated that growth speed of spherulites of PE has maximum value at a certain temperature(101℃).
関東学院大学工学総合研究所の論文