Aging effect on the reflectivity measurements of polychloroprene matrices containing carbon black and carbonyl-iron powder

被引：61

作者：

Pinho, MS

Gregori, ML

Nunes, RCR

Soares, BG

机构：

[1] Univ Fed Rio de Janeiro, Inst Macromol, Ctr Tecnol, BR-21945970 Rio De Janeiro, Brazil

[2] Inst Pesquisas Marinha, BR-21931090 Rio De Janeiro, Brazil

来源：

POLYMER DEGRADATION AND STABILITY | 2001年 / 73卷 / 01期

关键词：

microwave absorbing materials; polychloroprene; carbon black; carbonyl-iron powder; salt spray test; waveguide;

D O I：

10.1016/S0141-3910(00)00198-1

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 effect of aging, arising from salt spray exposure, on the microwave reflectivity was studied for polychloroprene (CR) matrices, containing different kinds of active material in particulate form. The materials used as microwave absorbers in different contents were carbon black (CB) and carbonyl-iron powder (CIP). The microwave reflectivities were determined for the frequency range of 8-16 GHz, The formation of a superficial layer of iron oxide on CIP:CR composites was responsible for a reduction and change of microwave absorption towards a higher frequency. The reflectivity curves of CB:CR composites did not display any significant difference before and after the exposure. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1 / 5

页数：5

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