Journal
POLYMERS FOR ADVANCED TECHNOLOGIES
Volume 29, Issue 4, Pages 1294-1302Publisher
WILEY
DOI: 10.1002/pat.4241
Keywords
curing agent; epoxy resin; flame retardant; phosphorus-containing phenolic resin
Categories
Funding
- Science and Technology Planning Project of Fujian Province, China [2015Y0034]
- Scientific and Technological Projects of Xiamen City [3502Z20172010]
- Xiamen Southern Oceanographic Center [14GQT61HJ31, 15GZP023NF01]
- Program of Innovative Research Team for Young Scientists of Sichuan Province [2016TD0010]
- National Natural Science Foundation of China [51473095]
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For the sake of improving the flame retardancy of epoxy resin (EP), a novel phosphorus-containing phenolic resin (PPR) synthesized in our group instead of conventional phenolic resin (PR) was used to cure EP in the present research. The curing processes and the corresponding crosslinking structure and mechanical performance were investigated by differential scanning calorimeter and dynamic mechanical thermal analysis. Because of the introduction of flame-retarding elements including P and Si, PPR exhibited higher charring capacity in the condensed phase, which is helpful to construct a char layer of higher quality. Correspondingly, PPR-cured EP displayed remarkably improved flame retardance as compared to conventional PR-cured EP through the related evaluations including limiting oxygen index, vertical burning test, and microscale combustion colorimeter. As a multifunction agent, it is believable that PPR possesses potential commercial value to prepare flame-retardant EP with high performance.
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