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Water and moisture permeability of high-temperature vulcanized silicone rubber

机译：高温硫化硅橡胶的透湿性

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摘要

This study focuses on water and moisture permeability of high-temperature vulcanized silicone rubber (HTV SIR) and permeation time of water molecules through SIR sheath. The theoretical expression of permeation time was deduced based on Langmuir diffusion model and the dependence of permeation time on sheath thickness and diffusion parameters of water molecules in sheath was numerically calculated. Results indicate that permeation time increases quadratically with sheath thickness. The influences of some parameters, such as, inorganic filler (fumed silica and aluminum hydroxide) characteristics, sample thickness, AC electric field, and aqueous solution concentration on water permeability of SIR, and the effects of filler characteristics, sample thickness, AC electric field, and relative humidity on moisture permeability of SIR were investigated. Results indicate that hydrophobic treatment of inorganic filler particle surface, moderate increase in filler content and increase in sample thickness can to a certain degree weaken the water and moisture permeability of HTV SIR.
机译：这项研究的重点是高温硫化硅橡胶（HTV SIR）的水和湿气渗透性以及水分子通过SIR护套的渗透时间。根据Langmuir扩散模型推导了渗透时间的理论表达式，并数值计算了渗透时间与鞘层厚度的关系，并数值计算了鞘中水分子的扩散参数。结果表明，渗透时间随鞘厚度的增加而平方增加。某些参数的影响，例如无机填料（气相二氧化硅和氢氧化铝）的特性，样品厚度，AC电场和水溶液浓度对SIR的水渗透性，以及填料特性，样品厚度，AC电场的影响研究了相对湿度对SIR透湿性的影响。结果表明，对无机填料颗粒表面进行疏水处理，填料含量的适度增加和样品厚度的增加可以在一定程度上削弱HTV SIR的透湿性。

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