新型高温黏结剂的制备及性能研究

Preparation and Performance of High Temperature Adhesive

采用聚碳硅烷作为黏结剂主体,添加陶瓷组元的方法制备了新型耐高温黏结剂。采用流变仪研究了黏结剂的流变性能,采用TGA、XRD及SEM等方法研究了黏结剂的性能以及各组分含量与黏结剂性能之间的关系。结果表明:高温黏结剂具有良好的高温热稳定性及粘结强度,1 200℃质量损失为16%,平均粘结强度为23.4 MPa。

A high temperature adhesive was prepared by adding ceramic powders （ SiC, ZrC, Si or Zr etc. ） to polycarbosilane. Its rheology investigated by rheometer, The properties and relationship between component and prop erties of adhesive were investigated by means of TGA, XRD and SEM. The results suggested that adhesive possessed good high temperature resistance and adhesive intensity. The weight loss was 16wt% in 1 200℃（N2 atmosphere）, and its adhesive intensity was 6.4 MPa.