硬脂酸锌
硫化
材料科学
天然橡胶
复合材料
聚氨酯
硫酸
表面能
丁苯橡胶
粘附
胶粘剂
极限抗拉强度
接触角
润湿
表面改性
化学工程
抗撕裂性
固化(化学)
高分子化学
硅橡胶
聚合物
图层(电子)
苯乙烯
有机化学
共聚物
化学
冶金
原材料
工程类
作者
Carmen M. Cepeda-Jiménez,M. Mercedes Pastor-Blas,Teresa del Pilar Ferrándiz-Gómez,José Miguel Martín-Martínez
标识
DOI:10.1080/00218460008029303
摘要
Abstract Modifications produced on a vulcanized styrene –butadiene rubber surface by treatment with sulfuric acid were studied and several experimental variables were considered. The treatment of R1 rubber with sulfuric acid produced a noticeable decrease in contact angle which was mainly ascribed to an increase in surface energy due to the formation of sulfonic acid moieties and C˭O bonds, and the removal of zinc stearate. The rubber surface swelled and became brittle as a result of the treatment, and when flexed microcracks were created. A rubber surface layer modification was produced with a consequent decrease in tensile strength and elongation-at-break values. The treatment enhanced the T-peel strength of R1 rubber/polyurethane adhesive joints and the locus of failure was cohesive in the rubber. The optimum immersion time in H2SO4 solution was less than 1 min., and the reaction time in air was not found to be critical; the neutralization with ammonium hydroxide and the high concentration of the sulfu...
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