复合材料杆塔及材料多因子老化特性  

Aging Properties of Composite Material Pole and Its Materials Under Multi-factor Environment

作　　者：吴雄[1] 胡虔[1] 彭家顺[1] 柯锐[1] 何昌林[1] 

机构地区：[1]国网电力科学研究院武汉南瑞有限责任公司,武汉430074

出　　处：《高电压技术》2016年第3期908-913,共6页High Voltage Engineering

基　　金：国家电网公司科技项目(编号略)~~

摘　　要：为了探索电力用复合材料的耐环境老化特性,借助多因子老化箱模拟自然环境下复合材料杆塔运行环境,观察杆塔材料模量变化和杆塔、横担表面光纤光栅应变变化,表征加速老化条件下改性聚氨酯(PU)/玻纤复合材料和相应杆塔耐老化特性。经历4 000 h多因子加速老化,PU和相应复合材料弯曲模量保留率都>90%,拉挤工艺的PU复合材料样品弯曲模量可高达95.8%;PU复合材料杆塔及横担制品最大位移处应变<2‰,且杆塔应变低于横担应变。实验结果表明PU复合材料杆塔及横担具备良好的抗环境老化性。In order to explore the aging properties resistant to environmental for the composite material applied in power, on the basis of the multi-factor experimental box, we simulated the operating natural environment of the composite poles, observed the changes of material modulus and fiber bragg grating（FBG） strain on the surface of composite material poles and cross-arms under accelerated aging conditions, and analyzed the aging properties of polyurethane（PU）/glass fiber composite material and corresponding composite material poles. After 4 000 h multi-factor accelerated aging test, the retention flexural modulus of PU and PU composite materials were higher than 90%; especially for the samples under pultrusion process, its flexural modulus was up to 95.8% of the intrinsic modulus. The FBG strains of PU composite poles and cross-arms products located on maximum displacement were less than 2 ‰, and the strain of poles was lower than that of the cross-arms. The results show that PU composite pole and cross-arm can keep good resistance to environmental aging.

关 键 词：多因子 老化 复合材料杆塔 改性聚氨酯 光纤光栅 横担 

分 类 号：TB33[一般工业技术—材料科学与工程]