高等学校化学学报 ›› 1980, Vol. 1 ›› Issue (1): 91.

• 论文 • 上一篇    下一篇

Aa-Bb,Cc共缩聚型固化理论

唐敖庆, 汤心颐, 李玉玮, 赵东辉, 钱保功   

  1. 吉林大学化学系
  • 收稿日期:1979-12-05 出版日期:1980-06-24 发布日期:1980-06-24

THE CURING THEORY OF Aa-Bb,CcTYPE COPOLYCONDENSATION

Tang Aoqing, Tang Xinyi, Li Yuwei, Zhao Donghui, Qian Baogong   

  1. Departmene of Chemistry, Jilin University
  • Received:1979-12-05 Online:1980-06-24 Published:1980-06-24

摘要: 本文用几率方法研究了Aa-Bb,Cc型共缩聚体系的溶胶凝胶分配问题,得到了参加反应的各种官能团的反应程度、溶胶反应程度与溶胶分数的关系式。以此为基础,确定了B基和C基具有不同相对活性时的固化区和非固化区。用己二酸、丁二醇和三羟甲基丙烷进行了热固化反应并测定了固化树脂的溶解行为。实验结果与固化区的理论曲线基本相符。

Abstract: On the basis of probability method,the present authors obtain the equations for describing the sol-gel distribution behavior and the critical condition for gelation of Aa-Bb,Cctype copolycondensation system. With the aid of equations mentioned above,we also obtain the equations for describing the limit-curves of curing region.The equation for lower-limit curve of curing region is given byand the equations for upper limit-curve of the curing region are given by (a-1)(b-1)rb+(a-1)(c-1)rc=1 and the equations for upper limit curve of the curing region are given by   Where nb=(a-1)(b-1) and K is a parameter in relation to the relative reactivities of B an d C groups and rband rcin turn denote the stoichiometric ratio of Bto A and C to Agroups respectively.The copolycondensation of adipic acid butylene glycol-trimethylol propane has been carried out with different rband rcvalues and the corresponding gelation phenomena have been observed.The theoretical limit-curves of curing region and the observed values are nearly in coincidence with each other.

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