升温速率对陶瓷化硅橡胶瓷化性能的影响  

Effect of Heating Rate on Ceramifying Properties of Silicone Rubber-based Ceramizable Composites

作　　者：张涌[1] 郭建华[1] 梁栋[1] 王煜[1] 李函坚 ZHANG Yong;GUO Jianhua;LIANG Dong;WANG Yu;LI Hanjian(South China University of Technology, Guangzhou 510640,China)

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640

出　　处：《橡胶工业》2018年第6期689-694,共6页China Rubber Industry

基　　金：2016年度广东省大学生培育专项项目(j2tw-K1160010);2016年度广东省公益研究与能力建设专项项目(2016A010103001);2016年度中山市新型研发机构产业化项目

摘　　要：研究升温速率对陶瓷化硅橡胶瓷化性能和陶瓷化硅橡胶烧蚀所得陶瓷体性能的影响。结果表明,升温速率对陶瓷化硅橡胶的烧蚀质量损失率影响不大,当玻璃粉用量为45份时,烧蚀线性收缩率随升温速率的提高而增大;随着升温速率的提高,陶瓷体的三点弯曲强度和冲击强度先增大后减小;当升温速率为15℃·min^(-1)、玻璃粉用量为45份时,陶瓷体的三点弯曲强度和冲击强度达到最大值,相应的陶瓷体内部孔洞较小,微孔分布均匀,断面致密性较好。Effect of heating rate on the ceramifying properties of ceramizable silicone rubber and the properties of ceramic residue by ablation of ceramized silicone rubber were studied. The results showed that the heating rate had little effect on the ablative mass loss rate of the ceramized silicone rubber. When the amount of glass powder was 45 phr,the ablation linear shrinkage increased with the increase of the heating rate. With the increase of the heating rate,the three-point bending strength and impact strength of the ceramic residue increased at first and then decreased. When the heating rate was 15℃·min^-1 and the glass powder dosage was 45 phr,the three-point bending strength and impact strength of the ceramic residue reached the maximum value,the internal pores of the ceramic residue were smaller and distributed uniformly,and the cross-section was dense.

关 键 词：陶瓷化硅橡胶 陶瓷体 升温速率 瓷化性能 弯曲强度 冲击强度 微观形貌 

分 类 号：TQ330.7[化学工程—橡胶工业] TQ333.93