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论文类型：期刊论文

发表时间：2010-01-15

发表刊物：JOURNAL OF APPLIED POLYMER SCIENCE

收录刊物：SCIE、EI

卷号：115

期号：2

页面范围：1032-1038

ISSN号：0021-8995

关键字：flame retardance; copolymerization; polystyrene

摘要：Two phosphorus-containing acrylates of 1-oxo-2,6,7-trioxa-1-phorsphabicyclo[2,2,2]oct-4-yl methyl acrylate and (10-oxo-10-hydro-9-oxa-10 lambda(5)-phosphaphenanthrene-10-yl) methyl acrylate were free-radical-copolymerized with styrene (St). The r(1) reactivity ratio values (related to the novel acrylates) were 0.342 and 0.225, respectively, and the r(2) reactivity ratio values (related to St) were 0.432 and 0.503, respectively. The thermal stability of the copolymers was tested by thermogravimetric analysis (TGA) in N(2) or air, and the ignitability was tested by measurements of UL-94 vertical combustion tests and the limiting oxygen index. The results of TGA and combustion tests indicated that the effect of flame retardancy was determined by the nature of the phosphorus-containing substituent. Compared with the 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide based group, the 1oxo-2,6,7-trioxa-1-phorsphabicyclo[2,2,2]oct-4-yl methol based group could enhance the ability of char formation with an antidripping effect. It is concluded that phosphorus-containing acrylates are potential flame-retarding monomers for styrenic polymers. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 115: 1032-1038, 2010