The effect of weathering on the fracture energy of hardcoats over polycarbonate

被引：32

作者：

Nichols, ME ^{[1
]}

Peters, CA ^{[1
]}

机构：

[1] Ford Res Lab, Dept Mat Sci, Dearborn, MI USA

来源：

POLYMER DEGRADATION AND STABILITY | 2002年 / 75卷 / 03期

关键词：

polycarbonate; hardcoat; weathering; fracture;

D O I：

10.1016/S0141-3910(01)00244-0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effects of accelerated weathering on the brittleness of siloxane-based hardcoats coated on polycarbonate sheet were quantified using fracture energy testing and chemical composition change measurements. The hardcoat containing no ultraviolet light absorber (UVA) showed a faster decrease in the fracture energy as weathering progressed, compared to the hardcoat formulated with UVA. In addition, the rate of weathering induced chemical composition change, as measured by photoacoustic infrared spectroscopy, was greater in the UVA free hardcoat. The decrease in the fracture energy appears to be proportional to the amount of chemical composition change, regardless of whether the hardcoat contains UVA. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：439 / 446

页数：8

共 15 条

[1] CRACKING OF THIN BONDED FILMS IN RESIDUAL TENSION [J].