拉挤成型玻璃钢托架的湿热老化性能及使用寿命  

Dampness & Heat Aging Properties and Service Life of FRP Bracket with Pull-Extrusion Molding

作　　者：卜乐宏[1] 吕争青[1] 

机构地区：[1]上海第二工业大学,上海201209

出　　处：《上海第二工业大学学报》2007年第2期117-124,共8页Journal of Shanghai Polytechnic University

摘　　要：研究了冷却塔拉挤成型玻璃钢托架的湿热老化性能及使用寿命;认为湿态弯曲强度(σf)适用反映试样的老化状态;取试样的σf(湿态)降低至一半的时间为老化临界时间,得到各试样在水温28℃时可有30年或更长时间使用寿命的结论。目前拉挤玻璃纲托架已在电力系统冷却塔中得到全面推广使用。The dampness ＆ heat aging properties and service life of FRP bracket with pull-extrusion molding were studied. The aging situation of the bracket could be showed with wet-bending strength （σf）. It is concluded that service life of RPF bracket can be used for 30 years or much more in 28℃ water if the time that wet-bending strength （σf） be reduced to half be regarded as critical aging time. The FRP bracket with pull-extrusion molding are widely applied to cooling towers in power system.

关 键 词：复合材料 使用寿命 湿热老化 冷却塔 拉挤成型玻璃钢托架 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]