摘要
通过原位聚合制得聚苯胺(PA)包覆锆钛酸铅(PZT)(PA-PZT),然后将导电炭黑(CB)与PZT(或PA-PZT)填充于苯基硅橡胶,表征了PZT、PA-PZT、苯基硅橡胶的相态结构,考察了CB、PZT、PA-PZT对苯基硅橡胶阻尼性能的影响,研究了填充苯基硅橡胶的物理机械性能。结果表明,在PZT或PA-PZT填充苯基硅橡胶中,粒径小于1μm的CB颗粒分布在PZT或PA-PZT周围,且分散均匀;加入CB后,随着振幅的增加,苯基硅橡胶的损耗因子(tanδ)呈现先增大后减小的趋势,CB的适宜用量为30份;当温度为-50～100℃时,加入PZT或PA-PZT后,苯基硅橡胶的阻尼值和温域同时增大,在大振幅和相同填充量下,填充PA-PZT橡胶的tanδ值比填充PZT者约大0.15,说明表面包覆更有助于硅橡胶阻尼性能的提高;随着PA-PZT用量的增加,苯基硅橡胶的tanδ提高,PA-PZT的适宜用量为80份;填充80份PZT或PA-PZT后,苯基硅橡胶的邵尔A硬度提高,扯断伸长率与拉伸强度有所下降,但拉伸强度仍可超过3 MPa。
Polyaniline（PA） was coated on the surface of lead zirconate titanate（PZT）（PA-PZT） by in-situ polymerization,then the phenyl silicone rubber was filled with carbon black（CB）,PZT,PA-PZT.The morphology of PZT,PA-PZT and phenyl silicone rubber were characterized,effects of CB,PZT,PA-PZT on the damping property of phenyl silicone rubber were investigated,and the mechanical properties of phenyl silicone rubber were studied.The results showed that the CB which size was less than 1 μm dispersed uniformly in the phenyl silicone rubber filled with PZT or PA-PZT.With the increase of amplitude,the loss factor（tan δ） of phenyl silicone rubber filled with CB increased first and then decreased,and the optimal amount of CB was 30 phr.When the temperature ranged from-50 ℃ to 100 ℃,after filling PZT or PA-PZT,the damping value and temperature range of phenyl silicone rubber increased and widened.At large amplitude and the same filling load,the tan δ value of the phenyl silicone rubber filled with PA-PZT was 0.15 more than that of the phenyl silicone rubber filled with PZT,indicating that the surface coating was beneficial to damping property.With increasing PA-PZT,the tan δ value of phenyl silicone rubber increased,and the optimum amount of PA-PZT was 80 phr.The Shore A hardness increased,elongation at break and tensile strength decreased for the phenyl silicone rubber with 80 phr PZT or PA-PZT,but the tensile strength was still more than 3 MPa.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
2012年第6期458-462,共5页
China Synthetic Rubber Industry
关键词
苯基硅橡胶
锆钛酸铅
聚苯胺
包覆
导电炭黑
阻尼性能
物理机械性能
phenyl silicone rubber
lead zirconate titanate
polyaniline
coating
conductive carbon black
damping property
mechanical property
