INFLUENCE OF COVALENTLY BOUND PHOSPHORUS-CONTAINING GROUPS ON THE FLAMMABILITY OF POLY(VINYL ALCOHOL), POLY(ETHYLENE-CO-VINYL ALCOHOL) AND LOW-DENSITY POLYETHYLENE

被引：151

作者：

BANKS, M ^{[1
]}

EBDON, JR ^{[1
]}

JOHNSON, M ^{[1
]}

机构：

[1] UNIV LANCASTER,SCH PHYS & MAT,CTR POLYMER,LANCASTER LA1 4YA,ENGLAND

来源：

POLYMER | 1993年 / 34卷 / 21期

关键词：

POLYETHYLENE; POLY(VINYL ALCOHOL); FLAME RETARDATION;

D O I：

10.1016/0032-3861(93)90163-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(vinyl alcohol) and ethylene-vinyl alcohol copolymers have been phosphorylated with H3PO4 and H3PO3. The phosphorylated samples possess pendent phosphate and phosphite groups and are significantly more flame retardant than the unmodified materials. The flame retardance arises in part from a condensed-phase mechanism involving dehydration, crosslinking and intumescent char formation, similar to that observed when certain phosphorus-based additives are used with poly(vinyl alcohol), cellulose and other highly hydroxylated polymers, and in part from a vapour-phase mechanism. Low-density polyethylene can also be rendered flame retardant to a certain extent by phosphonylation.

引用

页码：4547 / 4556

页数：10

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