高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 259.

• Chemistry in Materials Sciences • 上一篇    下一篇

Changes in the Morphology of Cast Nylon through Copolymerization

GAO Jian-Guo1,2, CHEN Yu-Ping1,2, WANG You-Huai1,2, HE Jia-Song1,2   

  1. 1. Qingdao Entry-exit Inspection and Quarantine Bureau of the People、s Republic of China, Qingdao 266002;
    2. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080
  • 出版日期:2000-12-31 发布日期:2000-12-31

Changes in the Morphology of Cast Nylon through Copolymerization

GAO Jian-Guo1,2, CHEN Yu-Ping1,2, WANG You-Huai1,2, HE Jia-Song1,2   

  1. 1. Qingdao Entry-exit Inspection and Quarantine Bureau of the People、s Republic of China, Qingdao 266002;
    2. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080
  • Online:2000-12-31 Published:2000-12-31

PDF (PC)

被引次数

1

摘要：

In this paper, the effect of copolyether (PPG/PTHF) on morphology of cast nylon 6 was studied by means of DSC、SEM、DLIM (depolarized light intensity method), the result shows:PPG/PTHF-PA copolymer is a semicompatible system. PPG/PTHF-PA (polyamide) copolymer with different molecular weight from Mn=4400 to 10000 have different compatible. The results also show the compatibility and the degree of crystallization of cast nylon appear peak transformation with the increasing copolyether content and the increasing molecular weight of copolyether. It is also found that the permeation of copolyether segment toward polyamide substrate may be considered as general phenomenon, spherulite size of polyamide became smaller, crystallization behaviors was bad.The copolyether acted as nuleator in the crystallization of cast nylon. It is found that while compatible copolyether was dispersed in PA matrix as if a kind of filler, PA keeps good spherulite structure, at the same time,the mechaninical properties of the copolyamide is better than pure cast nylon 6.

Abstract:

In this paper, the effect of copolyether (PPG/PTHF) on morphology of cast nylon 6 was studied by means of DSC、SEM、DLIM (depolarized light intensity method), the result shows:PPG/PTHF-PA copolymer is a semicompatible system. PPG/PTHF-PA (polyamide) copolymer with different molecular weight from Mn=4400 to 10000 have different compatible. The results also show the compatibility and the degree of crystallization of cast nylon appear peak transformation with the increasing copolyether content and the increasing molecular weight of copolyether. It is also found that the permeation of copolyether segment toward polyamide substrate may be considered as general phenomenon, spherulite size of polyamide became smaller, crystallization behaviors was bad.The copolyether acted as nuleator in the crystallization of cast nylon. It is found that while compatible copolyether was dispersed in PA matrix as if a kind of filler, PA keeps good spherulite structure, at the same time,the mechaninical properties of the copolyamide is better than pure cast nylon 6.

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