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.
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
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
composite
service life
dampness ＆ heat aging
cooling tower
FRP bracket with pull-extrusion molding
