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Preparation of Novel Epoxy Resins Bearing Phthalazinone Moiety and Their Application as High-Temperature Adhesives
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论文类型: 期刊论文
发表时间: 2018-07-01
发表刊物: POLYMERS
收录刊物: SCIE
卷号: 10
期号: 7
ISSN号: 2073-4360
关键字: poly(aryl ether); phthalazinone; epoxy adhesive; high-temperature resistant
摘要: Most polymer-based adhesives exhibit some degree of degradation at temperatures above 200 degrees C, and so there is a need for the development of adhesives that can be used at high temperatures. A series of poly(phthalazinone ether nitrile sulfone ketone)s terminated with epoxy (E-PPENSK) and amine (A-PPENSK) groups have been prepared, which have been used as precursors can be applied for high-temperature resistant epoxy adhesives. The structured of these E-PPENSK (epoxy resin) and A-PPENSK (curing agent) components have been characterized by H-1 nuclear magnetic resonance (NMR) and Fourier transform-infrared spectroscopy (FT-IR) studies, with the effects of molecular weights and molar ratios on the gel content of their polymers being determined. Cured epoxy resins derived from E-PPENSK and A-PPENSK showed good thermal stability, with an optimal resin retaining 95% of its weight at 484 degrees C, which gave a char yield of 62%. This adhesive was found to exhibit good mechanical strength, with a single-lap adhesive joint (A-3000/E-6000) exhibiting a shear strength of 48.7 MPa. Heating this adhesive at 450 degrees C for 1 h afforded a polymer that still exhibited good shear strength of 17.8 MPa, indicating that these adhesives are potentially good candidates for high-temperature applications.

蹇锡高

教授   博士生导师   硕士生导师

性别: 男

毕业院校:大连工学院

学位: 硕士

所在单位:化工学院

学科:高分子材料. 高分子化学与物理. 膜科学与技术

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