B_(4)C增强可陶瓷化硅橡胶复合材料的制备与性能  

Preparation and Properties of B_(4)C Reinforced Ceramizable Silicone Rubber Composite

作　　者：赵孙策 曾诚 母汶汶 肖顺红 马寒冰[1] ZHAO Sunce;ZENG Cheng;MU Wenwen;XIAO Shunhong;MA Hanbing(School of Materials Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010

出　　处：《化工技术与开发》2021年第12期1-5,共5页Technology & Development of Chemical Industry

基　　金：四川省科技计划项目资助(2020YFG0173)。

摘　　要：碳化硼(B_(4)C)具有密度低、强度大、高温稳定性及化学稳定性好等特点。本文向可陶瓷化的硅橡胶复合材料中引入B_(4)C,以改善复合材料的热稳定性及烧结陶瓷体的强度。通过测试复合材料陶瓷体的弯曲力学性能、热重分析以及显微形貌分析等方法,研究了不同的B_(4)C添加份数对复合材料的性能影响。实验结果表明,在1500℃下,复合材料残留率增加至76.6%,最大失重速率减小为0.2462%·℃^(-1),1000℃下烧结陶瓷体的弯曲断裂峰值力达到7.91N,且陶瓷体结构为单相,填料组分的相容性良好。由此可知B_(4)C可以有效增强可陶瓷化硅橡胶复合材料的性能,复合材料的热稳定性有较大程度的提升。Boron carbide(B_(4)C)had the characteristics of low density,high strength,high temperature stability and good chemical stability.In this paper,B_(4)C was introduced into the ceramic silicon rubber composite material to improve the thermal stability of the composite material and the sintered ceramic body strength.The mechanical properties of composite materials,thermogravimetric analysis and micro-morphology analysis methods were used to study the effect of different B_(4)C additions on the performance of composite materials.The experimental results showed that at 1500℃,the residual rate of composite materials increased to 76.6%,the maximum weight loss rate was reduced to 0.2462%/℃,the peak bending fracture force of the sintered ceramic body at 1000℃reached 7.91N,and the ceramic body structure was single-phase with good compatibility of filler components.Comprehensively obtaining B_(4)C could effectively enhance the performance of ceramizable silicone rubber composite materials,and greatly improve the thermal stability of the composite materials.

关 键 词：可陶瓷化硅橡胶 碳化硼 硅灰石 陶瓷体 热稳定性 力学性能 

分 类 号：TQ333.93[化学工程—橡胶工业]