NBR低硫硫化体系的研究.pdfVIP

NBR低硫硫化体系的研究 摘要：本文研究低硫硫化体系对NBR胶料性能的影响。主要通过改变硫化体系中 配合剂的品种与用量，试验得到不同性能的硫化胶料，然后测试试验胶料的性能，得 到综合性能最好的胶料配方。结果表明，对于低硫硫化体系，硫黄含 为0.5份时，促 进剂单用不能得到理想的硫化曲线；促进剂并用可提高胶料的抗焦烧性能，且硫化曲 线平坦，硫化速度适中。当硫化体系为S 0.5，CZ 2 ，TMTD 1，DTDM 2，DCP 0.5时，胶料的综合性能最好。 关键词：NBR ，硫化体系，胶料性能 Low-sulfur curing system of NBR Abstract: In this paper study low-sulfur vulcanization system on properties of NBR rubber. Mainly by changing the curing agent system with the variety and amount of different performance tests are vulcanized rubber, and then tests the performance of rubber, are the best overall performance rubber formula. The results show that for the sulfur vulcanization system, sulfur content of 0.5 phr, accelerator alone can not be the ideal vulcanization curve; accelerator can increase the compound with anti-scorch properties, and the vulcanization curve flat, cure rate is moderate. When the curing system for the S 0.5, CZ 2, TMTD 1, DTDM 2, DCP 0.5, the plastic material of the best properties. Key words: NBR, curing system, Material properties of vulcanized rubber 1 目 录 1 前言……………………………………………………………………………1 1.1 基本概要………………………………………………………………………1 1.2 NBR的发展史…………………………………………………………………1 1.2.1 国内外的生产现状及发展…………………………………………………1 1.2.2 NBR的系列产品……………………………………………………………2 1.2.3 NBR的发展前景……………………………………………………………3 1.3 橡胶硫化历程……………………………………………………………… 3 1.3.1 橡胶硫化反应过程……………………………………………… 3 1.3.2 硫化历程图…………………………………………………………………4 1.3.3 理想的橡胶硫化曲线…………………………………………………… 5 1.4 硫化机理……………………………………………………………… 5 1.4.1 促进剂硫黄硫化作用机理…………………………………………………5 1.4.2 硫载体硫化机理…………………………………………………………… 8 1.4.3 过氧化物硫化……………………………………………………………… 9 1.4.4 氧化锌和硬脂酸的作用……………………………………………………10 1.5 硫化胶及其网络……………………………………………………………