摘要
研究云母粉粒径对宽温域阻尼丁基橡胶(IIR)胶料性能的影响。结果表明:云母粉会吸附硫黄和促进剂,对IIR胶料的硫化产生延迟效应,降低IIR胶料的硫化速率,但可有效防止IIR胶料焦烧;粒径为10~60μm的云母粉补强IIR硫化胶的整体物理性能优于炭黑N330补强IIR硫化胶;与炭黑N330补强IIR硫化胶相比,云母粉补强IIR硫化胶的最大损耗因子(tanδ_(max))显著增大;粒径为60μm的云母粉补强IIR硫化胶的损耗因子(tanδ)≥0.3的阻尼温域与炭黑N330补强IIR硫化胶相当,均宽于其他粒径云母粉补强IIR硫化胶;粒径为60μm的云母粉补强IIR硫化胶的tanδ_(max)最大,阻尼性能最佳,云母粉粒径过大或过小对IIR硫化胶的阻尼性能都不利。
The effect of the particle size of mica powder on the properties of damping butyl rubber(IIR)compounds with wide temperature ranges was investigated.The results showed that,mica powder could adsorb sulfur and accelerators,resulting in a delayed effect on the vulcanization of IIR compound and a reduced vulcanization rate,while effectively preventing the scorching.The physical properties of IIR vulcanizates reinforced with mica powder with particle size of 10~60μm were better than those of IIR vulcanizate reinforced with carbon black N330.Compared with IIR vulcanizate reinforced with carbon black N330,IIR vulcanizate reinforced with mica powder exhibited a significantly improved maximum loss factor(tanδ_(max)).The damping temperature range of loss factor(tanδ)≥0.3 of IIR vulcanizate reinforced with mica powder of 60μm was equivalent to that of IIR vulcanizates reinforced with carbon black N330,and both were wider than the damping temperature ranges of IIR vulcanizate reinforced with mica powder with other particle sizes.Moreover,the IIR vulcanizates reinforced with mica powder with particle size of 60μm showed the largest tanδ_(max) and the best damping performance.Both excessively large and small particle sizes of mica powder were detrimental to the damping performance of IIR vulcanizate.
作者
刘超
郑方远
何欢
LIU Chao;ZHENG Fangyuan;HE Huan(SINOPEC(Beijing)Research Institute of Chemical Industry Co.,Ltd,Yanshan Branch/National Engineering Research Center for Synthesis of Novel Rubber and Plastic Materials,Beijing 102500,China)
出处
《橡胶工业》
2025年第9期673-678,共6页
China Rubber Industry
关键词
云母粉
粒径
丁基橡胶
阻尼性能
物理性能
mica powder
particle size
IIR
damping performance
physical property
