THE MECHANISM OF CURE REACTION OF 4,4'-DIAMINODIPHENYL METHANE WITH TETRAGLYCIDYL 4,4'-DIAMINODIPHENYL METHANE EPOXY*

WANG Wei; WU Xuanzheng; QI Zongneng

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THE MECHANISM OF CURE REACTION OF 4,4'-DIAMINODIPHENYL METHANE WITH TETRAGLYCIDYL 4,4'-DIAMINODIPHENYL METHANE EPOXY*

Papers | Updated：2021-06-21

- THE MECHANISM OF CURE REACTION OF 4,4'-DIAMINODIPHENYL METHANE WITH TETRAGLYCIDYL 4,4'-DIAMINODIPHENYL METHANE EPOXY*
- Vol. 10, Issue 1, Pages: 81-88(1992)
- Affiliations：
  
  1. State Key Laboratory of Engineering Plastics, Institute of Chemistry, Academia Sinica,Beijing,100080
  2.   Institute of Chemistry
  3.   Academia Sinica
  4.   Beijing 100080
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：20 March 1992
- Accepted：
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[1]王维,吴选征,漆宗能.THE MECHANISM OF CURE REACTION OF 4,4'-DIAMINODIPHENYL METHANE WITH TETRAGLYCIDYL 4,4'-DIAMINODIPHENYL METHANE EPOXY[J].Chinese Journal of Polymer Science,1992,{4}(01):81-88.

WANG Wei, WU Xuanzheng, QI Zongneng. THE MECHANISM OF CURE REACTION OF 4,4'-DIAMINODIPHENYL METHANE WITH TETRAGLYCIDYL 4,4'-DIAMINODIPHENYL METHANE EPOXY*[J]. 1992, 10(1): 81-88.
[1]王维,吴选征,漆宗能.THE MECHANISM OF CURE REACTION OF 4,4'-DIAMINODIPHENYL METHANE WITH TETRAGLYCIDYL 4,4'-DIAMINODIPHENYL METHANE EPOXY[J].Chinese Journal of Polymer Science,1992,{4}(01):81-88. DOI：

WANG Wei, WU Xuanzheng, QI Zongneng. THE MECHANISM OF CURE REACTION OF 4,4'-DIAMINODIPHENYL METHANE WITH TETRAGLYCIDYL 4,4'-DIAMINODIPHENYL METHANE EPOXY*[J]. 1992, 10(1): 81-88. DOI：

摘要

<正> The cure reaction of tetraglycidyl 4

4’-diaminodiphenyl methane （TGDDM） epoxy resin with 4

4’-diaminodiphenyl methane （DDM） has been studied by using DSC. Instead of one exothermic peak

two exothermic peaks

indicative of a complex reaction mechanism

are shown in the DSC curve of TGDDM-DDM mixtures in nonisothermal cure experiments when the content of DDM is lower than stoichiometric ratio. The result of the kinetic analysis of the cure reaction shows that the activation energy of the lower temperature exotherm peak is about 56 kJ/mol and that of the higher temperature exotherm peak is about 136 kJ/mol. The lower temperature cure reaction peak can be attributed to the primary amine-epoxide and secondary amine-epoxide reactions

and the higher temperature cure reaction peak can be attributed to the epoxide-hydroxy reaction under catalysis of tertiary amine in the TGDDM epoxy resin. Because the network density of the cured epoxy resin is determined by these two reactions

the content of DDM has little effect on the glass transition temperature of cured epoxy resin.

Abstract

The cure reaction of tetraglycidyl 4

4’-diaminodiphenyl methane （TGDDM） epoxy resin with 4

4’-diaminodiphenyl methane （DDM） has been studied by using DSC. Instead of one exothermic peak

two exothermic peaks

indicative of a complex reaction mechanism

the content of DDM has little effect on the glass transition temperature of cured epoxy resin.

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