镀镍玻纤/环氧树脂复合材料电热融冰性能

ELECTROTHERMAL ICE MELTING PROPERTIES OF NICKEL COATED GLASS FIBER/EPOXY RESIN COMPOSITES

利用化学镀法在经过处理的玻璃纤维表面制备了致密、均匀的Ni-P镀层。分别研究镀镍玻璃纤维的电热特性及其复合材料的融冰性能。SEM表明玻璃纤维镀镍之前表面光滑,镀镍后镍粒子分布均匀且其直径分布在150 nm～300 nm之间。电阻测试表明样品电阻随镀镍时间的增长而降低,镀镍时间为25 min,样品的表面电阻为1. 4Ω/。循环电热实验表明镀镍玻纤具有良好的电热特性,随着输入功率的增加,升温能力迅速提升,且都可在40 s内达到最高平衡温度。样品在多次电热循环过程后导电性能提高,这可能和高温促使其发生了晶体化转变有关。除冰实验表明利用镀镍玻纤/环氧树脂导电玻璃钢材料拥有较好的除冰效果,5 V输入电压下,冰块在镀镍玻纤/环氧树脂复合材料表面最短脱落时间为112 s。

A dense and uniform Ni-P coating was prepared on the treated glass fiber surface by electroless plating.The electrothermal properties of nickel-coated glass fiber and the melting properties of the composites were studied.SEM showed that the surface of the glass fiber was smooth before nickel plating,and the nickel particle distribution was uniform and its diameter was between 150 nm and 300 nm.The resistance test shows that the resistance of the sample decreases with the increase of nickel plating time,and the surface resistance of the sample is 1.4Ω/□when the nickel plating time is 25 min.The cyclic electrothermal experiment shows that the nickel-coated glass fiber has good electrothermal properties,and the heating capacity increases rapidly with the increase of input power.The maximum equilibrium temperature is reached within 40 s.The conductivity of the sample was improved after several electrothermal cycles,which may be related to the crystallization transition caused by high temperature.The deicing experiment showed that the best deicing effect was obtained by using Ni-coated glass fiber/epoxy resin conductive FRP material,and the shortest time of ice falling off on the surface of Ni-coated glass fiber/epoxy composite was 112 s under the input voltage of 5 V.