用于连接Al2O3陶瓷的耐高温胶黏剂的制备与研究

以陶瓷先驱体硅树脂胶黏剂作为基体,TiB2和低熔点玻璃粉为活性填料制备用于连接Al2O3陶瓷的耐高温胶黏剂.利用傅里叶红外（FTIR）、热重分析（TGA）、X射线衍射（XRD）、扫描电镜（SEM）和剪切强度测试对胶黏剂的固化交联、耐热性、裂解产物的物相组成、连接层的微观形貌及连接性能进行了表征.结果表明,先驱体硅树脂在加热条件下能通过缩合反应进行固化交联,加入的活性填料TiB2和玻璃粉能与先驱体硅树脂的裂解产物发生化学反应,大幅度提高胶黏剂耐热性和高温连接性能....

Full description

Saved in:
Bibliographic Details
Published in航空材料学报 Vol. 34; no. 2; pp. 63 - 68
Main Author 秦岩 饶志龙 黄志雄
Format Journal Article
LanguageChinese
Published 武汉理工大学特种功能材料技术教育部重点实验室,武汉,430070 2014
Subjects
化学反应
活性填料
耐高温胶黏剂
陶瓷先驱体
preceramic polymer
活性填料
化学反应
active fillers
耐高温胶黏剂
chemical reaction
陶瓷先驱体
heat-resistant adhesive
Online AccessGet full text

Cover

More Information
Summary:以陶瓷先驱体硅树脂胶黏剂作为基体,TiB2和低熔点玻璃粉为活性填料制备用于连接Al2O3陶瓷的耐高温胶黏剂.利用傅里叶红外（FTIR）、热重分析（TGA）、X射线衍射（XRD）、扫描电镜（SEM）和剪切强度测试对胶黏剂的固化交联、耐热性、裂解产物的物相组成、连接层的微观形貌及连接性能进行了表征.结果表明,先驱体硅树脂在加热条件下能通过缩合反应进行固化交联,加入的活性填料TiB2和玻璃粉能与先驱体硅树脂的裂解产物发生化学反应,大幅度提高胶黏剂耐热性和高温连接性能.
Bibliography:High-temperature organic adhesive was prepared using preceramic polysiloxane as matrix, TiB2 powder and low melting point glass powder as additives. The curing mechanism, thermal properties, pyrolysis products of the phase composition, microstructure and the bonding mechanism of adhesive were investigated using FTIR, TGA, XRD, SEM, and bonding strength tests. The results show that the adhesive is cored through polycondensation reaction. The incorporation of TiB2 ceramic powder and glass powder induce chemical reaction with pyrolysis products derived from preceramic polysiloxane, which was the important reason that adhesive had exhibited out- standing heat-resistant properties and high bonding strength at high temperature.
heat-resistant adhesive; preceramic polymer; active fillers; chemical reaction
QIN Yan, RAO Zhi-long, HUANG Zhi-xiong （Key Laboratory of Advanced Technology for Specially Functional Materials, Ministry of Education, Wuhan University of Technology Wuhan 430070, China）
11-3159/V
ISSN:1005-5053
DOI:10.3969/j.issn.1005-5053.2014.2.012