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Evaluation of Initiators and Fillers in Diallyl Phthalate Resins by Differential Scanning Calorimetry

 

作者: PaulE. Willard,  

 

期刊: Journal of Macromolecular Science: Part A - Chemistry  (Taylor Available online 1974)
卷期: Volume 8, issue 1  

页码: 33-41

 

ISSN:0022-233X

 

年代: 1974

 

DOI:10.1080/00222337408065811

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Seven organic peroxide initiators for the polymerization of diallyl-o-phthalate prepolymers were studied using differential scanning calorimetry. Included were t-butyl perbenzoate, dicumyl peroxide, α,α′-bis(t-butyl peroxy) diisopropyl-benzene, 2,5-dimethyl-2,5-di(t-butyl peroxy) hexane, 2,5-dimethyl-2,5-di(t-butyl peroxy)hexyne-3, di-t-butyl peroxide, and t-butyl hydroperoxide. Heats of reaction and reaction rate constants are presented for each initiator at 1, 2, 3, and 4 phr of diallyl-o-phthalate prepolymers. The differences in reaction temperature and rate are discussed. Effects of four types of commonly used fillers (asbestos floats, ground quartz, calcium silicate, and clay) on the heats of reaction of diallyl-o-phthalate prepolymers using t-butyl perbenzoate and dicumyl peroxide initiators show the large inhibiting effect of untreated kaolinite clays on this polymerization.

 

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