硼酸镁晶须/有机硅橡胶功能复合材料的制备和性能研究  

Preparation and Property Research of Mg_2B_2O_5 Whisker/silicone Rubber Functional Composites

作　　者：张小宸 段东平[1,2] ZHANG Xiao-chen DUAN Dong-ping(Key Laboratory of Comprehensive and Highly Efficitent Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining , 810008, China Institute of Process Engineering, Chinese Academy of Sciences, Beijing , 100190, China)

机构地区：[1]中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海西宁810008 [2]中国科学院过程工程研究所,北京100190

出　　处：《盐湖研究》2017年第1期69-75,共7页Journal of Salt Lake Research

摘　　要：硅橡胶作为耐高低温电缆料具有优异的性能,加入无机阻燃剂在赋予硅橡胶阻燃功能的同时保持力学性能一直是该领域研究的热点。通过改变乙烯基聚硅氧烷的配比,优化交联密度和交联点的位置,在提高硅橡胶撕裂强度的同时,保持硅橡胶优异的粘弹性,能得到性能优异的硅橡胶。当生胶A(Vi%0.23):生胶B(Vi%0.04)为4∶1时,晶须在硅橡胶中分散均匀,补强效果最佳;当生胶A(Vi%0.23):生胶B(Vi%0.04)为2∶3,在较好力学性能的条件下,阻燃性能最好。As high and low temperature resistant cable material, silicone rubber has excellent performance. Adding inorganic flame retardants in silicone rubber to improve flame retardant function and main- taining its mechanical properties has been a research hot topic. By changing the ratio of three major com- ponents of vinyl polysiloxane, vinyl content, Mg2 B2 O5 whisker and SiO2, the crosslinking density and crosslinking point were optimized, which can maintain the high viscoelasticity performance of silicone rubber while increasing it＇ s tear strength to obtain an excellent silicone rubber. The whisker is uniformly dispersed when the ratio of Rubber A （Vi%0.23） to Rubber B （ Vi% 0. 04） is 4 to 1. Under the good mechanical condition, the flame retardant property is the best with a ratio of 2 to 3 between Rubber A （ Vi% 0.23 ） and Rubber B （ Vi% 0.04）.

关 键 词：硼酸镁晶须 有机硅橡胶 拉伸强度 阻燃 

分 类 号：TQ330[化学工程—橡胶工业]