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Facile preparation of a phosphinated bisphenol and its low water-absorptionepoxy resins for halogen-free copper clad laminates

By Hou Chien Chang, Hung Tse Lin, Ching Hsuan Lin and Wen Chiung Su

Abstract

This study focuses on developing advanced epoxy resins with characteristic of low water absorption forhalogen-free copper clad laminates (CCL). To achieve this goal, we prepared a bisphenol (1) with twophosphinate pendants via the nucleophilic addition of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene10-oxide (DOPO) with the 1,4-phenylene diamine-based benzoxazines (P-pd). A series of advancedepoxy resins (2) were prepared based on the advancement reaction of (1) and diglycidyl ether ofbisphenol A (DGEBA). After curing of (2), the properties of the resulting thermosets such as glass transitiontemperature, coefficient of thermal expansion, thermal decomposition temperature, waterabsorption, and flame retardancy were evaluated. The structureeproperty relationship was also discussed.Experimental data show that the resulting epoxy thermosets display moderate-to-high Tg, goodflame retardancy, high modulus, and very low water absorption

Topics: DOPO, Advancement, Flame retardancy, Water absorption, Phosphorus
Year: 2014
DOI identifier: 10.1016/j.polymdegradstab.2012.10.024
OAI identifier: oai:ir.lib.nchu.edu.tw:11455/84832
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