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PAE为活性高分子树脂,固含量越高稳定性越难控制。本文探讨一种固含量为35%PAE的制备工艺条件及与市售增强剂进行比较。实验证明选择胺酸摩尔比为1.05:1,聚酰胺预聚体催化剂的最佳用量为1.0%(对总量的摩尔比),反应温度为170℃左右,环氧氯丙烷与聚酰胺预聚体摩尔比为1.1:1,反应温度为60℃。环氧化反应后得到黏度为200～240mPa·s(涂-4杯50～60s)的聚酰胺树脂,干抗张强度优于市售PAE,湿抗张强度略低,PAE/CMC或PAE/CMS二元增强系统比单独使用PAE效果较优。
PAE is an active polymer resin, the higher the solid content, the more difficult to control the stability. In this paper, a solid content of 35% PAE preparation process conditions and compared with commercially available enhancer. Experiments show that the molar ratio of selected amino acid 1.05: 1, the best dosage of polyamide prepolymer catalyst is 1.0% (molar ratio to the total), the reaction temperature is about 170 ℃, epichlorohydrin and polyamide prepolymerization The molar ratio was 1.1: 1, and the reaction temperature was 60 ℃. After the epoxidation reaction, the polyamide resin with the viscosity of 200 ~ 240mPa · s (Tu-4 cup 50 ~ 60s) is obtained. The dry tensile strength is better than that of the commercial PAE, the wet tensile strength is slightly lower, the PAE / CMC or PAE / CMS binary enhancement system is better than using PAE alone.