XNBR/PVC共混胶的性能研究

Study on the Property of XNBR/PVC Blend

丁腈橡胶(NBR)与聚氯乙烯(PVC)共混合金是橡塑共混体系中一类重要的共混体系,NBR和PVC都属于极性聚合物,相容性较好,因此这种体系被广为研究和应用。但共混后制备混炼胶制品弹性较差,不能满足特殊条件下对弹性有要求工况的使用。羧基丁腈橡胶(XNBR)由丁二烯、丙烯腈和有机酸(丙烯酸、甲基丙烯酸等)三元共聚而成,引入羧基增加了极性,增大了与PVC的相容性,赋予高强度,改进耐磨性、拉伸强度和撕裂强度等物理性能,进一步提高耐油性并可以明显改善弹性性能,满足印染胶辊、纺织胶辊胶圈等弹性要求高的领域的使用要求。

NBR and PVC blend rubber is an important kind of blend.NBR and PVC are polar polymers,their compatibilities are better than the others,so the system is widely studied and applied.But the elasticity of mixed products after blending is poor,and cannot meet the requirement of the special conditions’use.Carboxyl nitrile rubber(XNBR)is ternary copolymer of butadiene rubber and organic acids(acrylic acid,methyl acrylic,etc),introducing CARBOXYL group can increase the compatibility with PVC,obtain high strength,improve wear resistance,tensile strength and tear strength and other physical properties,can also improve the oil resistance and greatly improve the elastic properties,which will meet elastic requirements of printing and dyeing cot,textile cot apron.