NBR橡胶／PA6复合材料的制备及共性能研究  

Study on the Properties of NBR/PA6 Composites by Melt Blending

作　　者：豆高雅 DOU GAO-YA(Shaanxi jintai chlor-alkali chemical industry Co., LTD, Yulin 718100, China)

机构地区：[1]陕西金泰氯碱化工有限公司,陕西榆林718100

出　　处：《广东橡胶》2017年第3期9-15,共7页Guangdong Rubber

摘　　要：丁腈橡胶是由丁二烯和丙烯腈通过乳液聚合而成的耐油型橡胶。因丁腈橡胶具有较好的耐油性、耐热性，已成为标准耐油橡胶弹性体制品。但是随着丁腈橡胶中丙烯腈百分含量增大，硫化胶耐油性能、耐磨性能、耐渗透性、耐热性、硬度及力学性能等获得提升。但其弹性、耐寒性能以及抗压缩永久变形性能降低。为了考察丁腈橡胶（NBR）与聚酰胺6（PA6）共混产物综合性能变化，本文采用不同种类NBR与PA6熔融共混，考察共混过程中转矩值变化，测试了NBR／PA6复合材料的力学性能以及耐溶剂性能。并对NBR／PA6进行了红外分析。研究结果表明：随着NBR／PA6体系中橡胶相（NBR）含量的增加，NBR／PA6熔体粘度上升。相同腈基含量下的NBR／PA6的平衡转矩值随着橡胶相（NBR）百分含量的增加而增大；拉伸强度随着NBR／PA6中橡胶相（NBR）百分含量的上升，呈现下降趋势。在相同的橡胶相（NBR）百分含量下，拉伸强度随着腈基百分含量的增加而增大；另外，在高温高剪切作用下，由红外分析知NBR与PA6间发生胺基与双键间的微化学反应；NBR／PA6体系中随着橡胶相（NBR）百分含量上升，NBR／PA6体系的体积溶胀率与质量溶胀率均呈上升趋势。Nitrile-butadiene rubber is obtain by butadiene and acrylonitrile in emulsion polymerization to get on a universal oil resistant rubber, because of excellent oil resistance and good property heat-resistant became the standard of oil resistant rubber elastomers. But with the content of acrylonitrile increased, the vulcanizates oil resistant, heatresistant, abrasion resistance, gas permeability resistance, hardness, elongation, tensile strength performance increase, but the low resistance,elasticity, resistance of permanent deformation to temperature compression are go bad. In order to examine the comprehensive performance changes of nitrile-butadiene rubber and polyamide 6（PA6） blending product, this thesis using different kind of NBR and PA6 for melt blending, inspects the changes of balance torque values during blending process. Research the mechanical properties, solvent resistance performance of blending product, and take a series of tests by infrared spectroscopic analysis. The research results show that the melt viscosity is rising up with the increase of the content of the NBR . In the same content of nitrile group the NBR and PA6 balance torque values is rising up with the increase of content of basic-rubber, the tensile strengthis reduced with the increase of content of basicrubber.In the same content of NBR, the tensile strength is rising up with the content of nitrile group; The infrared spectroscopic analysis test results show that there have micro chemical reactions between with NBR and PA6 in high temperature and high shear function, namely the reaction between double bond and amino group; Volume swelling ratio and quality swelling ratio at blend system is rising up with the increase of content of basic-rubbe.

关 键 词：丁腈橡胶 尼龙6 共混聚合物 耐溶剂性能 力学性能 

分 类 号：TQ331.2[化学工程—橡胶工业]