Journal
RSC ADVANCES
Volume 12, Issue 22, Pages 13756-13764Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ra08843b
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Funding
- National Natural Science Foundation of China [21908086]
- Youth Science Foundation of Jiangsu University of Technology [KYY19031]
- Qidong NEXTER New Material Technology Co., Ltd, Jiangsu [KYH22042]
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Novel star-like molecules containing P, N and Si with dual functions of flame retardance and curing promotion, named HCCP-KH540, were successfully synthesized. The incorporation of HCCP-KH540 into epoxy resin resulted in a composite material (E-HK) with reduced activation energy and accelerated curing reaction rate. The E-HK composite with 30 phr content of HCCP-KH540 exhibited excellent flame retardancy and thermal stability.
Novel star-like molecules containing P, N and Si with dual functions of flame retardance and curing promotion (abridged as HCCP-KH540) were successfully synthesized through the nucleophilic substitution reaction of hexachlorocyclotriphosphazene (HCCP) and 3-aminopropyltrimethoxysilane (KH540). HCCP-KH540 was incorporated with the matrix of epoxy resin (EP) to form a flame retardant composite abridged as E-HK. The activation energy of the curing reaction of the E-HK composite was reduced but the curing reaction rate was accelerated by HCCP-KH540. The E-HK composite with 30 phr content of HCCP-KH540 exhibited excellent flame retardancy with limiting oxygen index of 29.6% and V-1 rating in the vertical burning test as well as excellent thermal stability with a char yield of 23.77% at 700 degrees C, compared with only 8.64% for pure EP.
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