Deterioration of novel polyesterurethane elastomers in outdoor exposure

被引：12

作者：

Furukawa, M ^{[1
]}

Wakiyama, K ^{[1
]}

机构：

[1] Nagasaki Univ, Fac Engn, Dept Mat Sci & Engn, Nagasaki 8528521, Japan

来源：

POLYMER DEGRADATION AND STABILITY | 1999年 / 65卷 / 01期

关键词：

polyesterurethane; alkyl side group; weatherability; mechanical properties; ESR; FT-IR; DSC;

D O I：

10.1016/S0141-3910(98)00209-2

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(esterurethane)-elastomers based on novel polyester glycols with methyl side groups were exposed outdoors for 2 years. The polyester glycols used are poly(beta-methyl-delta-valerolactone)glycol (PMVL), poly(3-methyl pentamethylene adipate) glycol (PMPA), poly(nonamethylene-co-2-methyl octamethylene carbonate) glycol (PNOC). A mixture of PNOC and poly(dimethyl siloxane)glycol (PNOC/PDMS) was also used. Polyurethane network elastomers, were prepared from these polymer glycols, 4,4'-diphenylmethane diisocyanate, and a mixture of 1,4-butanediol with trimethylol propane by a prepolymer method. The deterioration behavior of the PUEs was measured by means of polarizing microscopy, DSC, tensile testing, dynamic viscometry, and ESR. The novel polyester-based PUEs have better weatherability than poly(oxytetramethylene) glycol (PTMG)-based PUE. The mechanisms of deterioration are discussed. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：15 / 24

页数：10

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