硅酸盐无机胶黏剂的粘结和绝缘性能

材料研究学报

2012, Vol. 26

Issue (6): 667-672

研究论文

本期目录 | 过刊浏览

硅酸盐无机胶黏剂的粘结和绝缘性能

赵宇航, 段德莉, 张月来, 王鹏, 李曙

中国科学院金属研究所沈阳 110016

Bonding and Insulating Properties of Silicate Inorganic Adhesive

ZHAO Yuhang, DUAN Deli, ZHANG Yuelai, WANG Peng, LI Shu

Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016

引用本文:

赵宇航段德莉张月来王鹏李曙. 硅酸盐无机胶黏剂的粘结和绝缘性能[J]. 材料研究学报, 2012, 26(6): 667-672.
ZHAO Yuhang DUAN Deli ZHANG Yuelai WANG Peng LI Shu. Bonding and Insulating Properties of Silicate Inorganic Adhesive[J]. Chinese Journal of Materials Research, 2012, 26(6): 667-672.

全文: PDF(1061 KB)

摘要:

制备了不同成分配比的耐高温硅酸盐胶黏剂, 用体视显微镜、扫描电镜观察胶体的形貌, 用低载荷拉伸试验机测试其粘结力, 并分析试样在高温条件下及饱和水蒸汽环境中的绝缘性能。结果表明：随着硅酸盐胶黏剂的液相组分中SiO₂/M₂O模数比变小、固相粉末粒度分布范围变宽及液固相质量比的适当调节, 其粘结强度均有较大的提升；胶黏剂绝缘的性能随着温度的升高而恶化并存在绝缘电阻大幅下降的临界温度, 碱金属离子含量的增加降低其临界温度并加快其下降趋势；在饱和水蒸气环境中胶黏剂绝缘性能普遍降低, 对固化后的胶体进行高温热处理使其绝缘性能有较大提升, 但碱金属离子含量和胶体微观裂纹会降低其绝缘性能。

关键词 ：无机非金属材料, 硅酸盐胶黏剂, 粘结强度, 绝缘性能, 模数比

Abstract：

For studying the bonding and insulating properties of inorganic adhesive, different compositions of silicate adhesive samples were prepared in this paper. The morphologies of the solidified adhesives were observed by the microscope and SEM. The bonding force was determined by low-loaded tensile testing machine and the insulation resistance of sample was measured under various temperature and saturated vapor environment. The results indicated that the bonding-strength of sample is greatly improved by the decrescent SiO₂/M₂O modulus ratio of liquid composition, the wide sizes and distributions of the solid powders as well as the proper ratio between solid and liquid component. The insulating property of sample deteriorates with temperature rising, and sample with more content of alkali metal ion shows lower critical temperature and quicker downtrend. Sample’s insulating resistance obviously decreased when it was under saturated vapor environment, which might be greatly improved by heat treating, but it can also deteriorate by the increase of both alkali ion content and micro crack of adhesive.

Key words： inorganic non-metallic materials silicate adhesive bonding strength insulating property Modulus ratio

收稿日期: 2012-08-30

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