HIGH-IMPACT CAST SHEETS OF POLY(METHYL METHACRYLATE) WITH LOW-LEVELS OF POLYURETHANE

被引：18

作者：

HEIM, P

WROTECKI, C

AVENEL, M

GAILLARD, P

机构：

[1] Elf Atochem, Groupement de Recherches de Lacq, 64170 Artix

来源：

POLYMER | 1993年 / 34卷 / 08期

关键词：

INTERPENETRATING POLYMER NETWORK; POLY(METHYL METHACRYLATE); POLYURETHANE CAST SHEETS; IMPACT;

D O I：

10.1016/0032-3861(93)90324-4

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

High impact strength, high transparency cast sheets of polyurethane (PU)-reinforced poly(methyl methacrylate) (PMMA) were obtained by means of IPN techniques. The PU content was kept low (less than 10%). The impact strength is maximum at a critical PU concentration, and for a given morphology. The study of various synthesis parameters led to the conclusion that the size of interstitial PMMA nodules - and therefore the optical and mechanical properties of the final material - are determined by the crosslink density of the swollen PU network at the onset of the methyl methacrylate polymerization.

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页码：1653 / 1660

页数：8

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