Degradation of semi-crystalline PPS bag-filter materials by NO and O2 at high temperature

被引:67
作者
Tanthapanichakoon, Winyu
Furuuchi, Masami
Nitta, Koh-hei
Hata, Mitsuhiko
Endoh, Shigehisa
Otani, Yoshio
机构
[1] Kanazawa Univ, Dept Chem & Chem Engn, Grad Sch Nat Sci & Technol, Fac Engn, Kanazawa, Ishikawa 9201192, Japan
[2] AIST Tsukuba, RIGT, Tsukuba, Ibaraki 3058569, Japan
关键词
fabric; acidic gas; annealing; degradation; strength; PPS;
D O I
10.1016/j.polymdegradstab.2005.12.008
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
In incineration plants, nitric oxide (NO) and oxygen (O-2) are the two major gaseous components, which degrade the mechanical properties of bag-filter media. Based on the experimental results of mass, dimension, morphology, crystallinity, fiber diameter, fiber orientation and fabric strength, changes in mechanical properties of polyphenylene sulfide (PPS) needled fabrics are related to two phenomena, i.e. the crystallization and the degradation of amorphous regions and some parts of crystalline regions. Both processes affect the fabric strength, competing with each other. The relation between strength and crystallinity is divided into two phases: (1) strength is dominated by crystallinity, and (2) strength is dependent on the defects in amorphous regions and some parts of crystalline regions. An increase in NO concentration has a potential to increase the deterioration rates of amorphous and crystalline phases but the crystallization process is unaffected. An increase in O-2 concentration leads to enhancement of both crystallization and deterioration. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1637 / 1644
页数:8
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