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本文从可结晶性聚合物缠结网或交联-缠结网的应力诱导结晶理论和高分子内旋转构象理论出发,研究了自增强高聚物的形变自由能对应力诱导结晶机理的依赖性,计算了两种晶型(伸直链晶和串晶)的自增强高聚物处于形变态和自由态下的形变自由能,得到了自增强高聚物的起始熔点同成型中牵伸比和温度、结晶形态和结晶度及非晶区中高分子链构象分数等间的定量关系式。并用该式分析了自增强聚乙烯的实验数据,证明理论同实验能较好的符合。
In this paper, based on the stress-induced crystallization theory and intra-molecular spin conformation theory of crystallizable polymer entanglement network or crosslink-entanglement network, the dependence of the self-reinforced polymer on the stress-induced crystallization mechanism was studied , The free energy of deformation of the self-reinforced polymer with two kinds of crystal (straight chain crystal and string crystal) in the deformation state and the free state was calculated, and the initial melting point of the self- Ratio and temperature, crystal morphology and crystallinity and the amorphous region of the polymer chain conformational fraction between the quantitative relationship. The experimental data of self-reinforced polyethylene were analyzed by this formula, which proves that the theory is in good agreement with the experiment.