实用型磁敏橡胶的制备和力学性能

Preparation and Performance of Practically Magnetorheological Rubbers

以NR/SBR并用胶为基体制备磁敏橡胶,研究了偶联剂修饰羰基铁粉和不同羰基铁粉、炭黑N660及软化剂橡胶油B-15的含量对其物理、力学性能以及磁流变性能的影响。结果表明:以NR/SBR并用胶为基体,使用适量硅烷偶联KH-570修饰的羰基铁粉(含量为300 Phr)(以纯橡胶或生胶重量为100 Phr的相对量单位,下同)、炭黑N660(含量为40 Phr)和软化剂橡胶油B-15(含量为15 Phr)制备的磁敏橡胶,具有最佳的物理与力学性能和磁流变效应。这是合理结构偶联剂修饰、炭黑增强、软化剂增韧等效应综合作用的结果。

The practically magnetorheological rubbers were fabricated, and the influence of carbonyl iron powders （CIPs） contents, carbon black contents, softeners contents and modified CIPs by different coupling agent on the physical and mechanical properties and the magneto-rheological performance were investigated in this paper. The results show that for the magnetorheological rubbers made from the NR/SBR blend, the samples with 300 phr carbonyl iron powders, 40 phr carbon black, 15 phr softeners and utilizing silicane coupling KH-570 modifying CIPs have the best physical and mechanical properties and the best MR effects. It results from the comprehensive effects of modifying by coupling with the reasonable structure, strengthening by the carbon black and toughening by the softener, etc.