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Synthesis and Characteristics of Modified Polyamides Based on Lactames and Polyether Amines

机译：基于内酰胺和聚醚胺的改性聚酰胺的合成与表征

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摘要

Conditions of the syntheses, by anionic polymerization method, of homo-and copolyamides based on epsilon-caprolactam (KL) and kappa-lauryllactam (LL) modified with urea prepolymers (Table 2), obtained from tolyelene diisocyanate and three various polyetheramines (polyoxyethylenediamine, polyoxypropylenediamine or polyoxypropylenetriamine - Table 1), have been described. An introduction of flexible polyether segments into the polyamide chain has been done with the aim to increase the imapct resistance. The effects of the type of amine used and copolyamides KL/LL compositions on the chosen mechanical properties (stress at break, elongatin at break, impact resistance at temp. 20 deg C and - 40 deg C) as well as on the contents of non-polymerized components (soluble in acetone) have been determined (Tables 3-6). Expected substantial improvement of impact resistance was reached only in the case when polyoxypropylenetriamine was used.
机译：通过阴离子聚合法合成的条件，是由甲苯-二异氰酸酯和三种聚醚胺（聚氧乙烯二胺，已经描述了聚氧丙烯二胺或聚氧丙烯三胺-表1）。已经将柔性聚醚链段引入聚酰胺链中，目的是增加耐耐冲击性。所用胺和共聚酰胺KL / LL组合物的类型对所选机械性能（断裂应力，断裂伸长率，温度20摄氏度和-40摄氏度下的抗冲击性）以及非织造布含量的影响已经确定了聚合成分（溶于丙酮）（表3-6）。仅在使用聚氧化丙烯三胺的情况下，才有望实现耐冲击性的显着改善。

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