Effect of Ambient Temperature on Hydrophobic Recovery Behavior of Silicone Rubber Composites

IF 2.4 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Molecular and Engineering Materials Pub Date : 2017-07-27 DOI:10.1142/S2251237317500034
Xiangyang Peng, Li Zijian, Feng Zheng, Ni Zhang, Zhen Huang, P. Fang
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引用次数: 2

Abstract

A series of silicone rubber samples with different cyclosiloxanes contents have been successfully prepared, and their hydrophobic recovery behaviors and mechanism were investigated in detail. The gas chromatography-mass spectroscopy technique after Soxhlet extraction was utilized to examine the low molecular weight siloxanes in the sample, SEM was used to observe the surface morphology of the silicone rubber influenced by plasma treatment, and contact angle measurement was applied to probe the hydrophobic recovery of the sample surface after plasma treatment at different storage temperatures. The storage time-dependent contact angle of water can be well fitted by the diffusion model calculated from Fick’s second law. The results imply that the hydrophobic recovery of silicone rubber is related to the diffusion of low molecular weight siloxanes, while larger content or higher temperature can induce faster hydrophobic recovery.
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环境温度对硅橡胶复合材料疏水恢复性能的影响
成功制备了一系列不同环硅氧烷含量的硅橡胶样品,并对其疏水回收行为和机理进行了详细的研究。利用索氏提取后的气相色谱-质谱技术检测样品中的低分子量硅氧烷,并应用接触角测量来探测在不同储存温度下等离子体处理后样品表面的疏水性恢复。根据Fick第二定律计算的扩散模型可以很好地拟合水的储存时变接触角。结果表明,硅橡胶的疏水性恢复与低分子量硅氧烷的扩散有关,而含量越大或温度越高,疏水性恢复越快。
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来源期刊
Journal of Molecular and Engineering Materials
Journal of Molecular and Engineering Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
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