聚乙二醇对硅酸盐胶黏剂适用期与性能的影响

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (1): 317-328.

聚乙二醇对硅酸盐胶黏剂适用期与性能的影响

沈镇强^{1, 2}, 王玉丹¹, 曹先启², 宋来明², 薛金龙², 王超²

1.哈尔滨工程大学材料科学与化学工程学院,哈尔滨 150000;
2.黑龙江省科学院石油化学研究院,哈尔滨 150000

收稿日期:2023-07-24 修订日期:2023-09-16 出版日期:2024-01-15 发布日期:2024-01-16
通信作者: 王玉丹,博士,讲师。E-mail:yudanwang@hrbeu.edu.cn
作者简介:沈镇强(1998—),男,硕士研究生。主要从事硅酸盐耐高温胶黏剂方面的研究。E-mail:841097398@qq.com
基金资助:
国家自然科学基金(21574033)

Effect of Polyethylene Glycol on Pot Life and Performances of Silicate Adhesives

SHEN Zhenqiang^1,2, WANG Yudan¹, CAO Xianqi², SONG Laiming², XUE Jinlong², WANG Chao²

1. School of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150000, China;
2. Institute of Petrochemistry, Heilongjiang Academy of Sciences, Harbin 150000, China

Received:2023-07-24 Revised:2023-09-16 Online:2024-01-15 Published:2024-01-16

摘要/Abstract

摘要： 为解决硅酸盐胶黏剂在空气中裸露时表面固化成膜导致的适用期过短问题,向硅酸盐胶黏剂中加入聚乙二醇(PEG)进行改性,使用流变仪、扫描电子显微镜、红外光谱仪、热重红外质谱联用仪和万能拉力机系统研究了胶黏剂的适用期、流变性能、微观形貌、分子结构、热稳定性及粘接性能。结果表明:当硅酸盐胶黏剂中PEG掺量为6%(质量分数)时,适用期延长至50 min;PEG在胶黏剂内部分布均匀,显著改变了胶黏剂的致密性与触变性;由Arrhenius方程计算出的预固化活化能由8.47 kJ/mol提高至12.61 kJ/mol;PEG不影响体系粘接性能,对同类型硅酸盐胶黏剂适用期也具有良好的延长效果。

关键词: 硅酸盐胶黏剂, 聚乙二醇, 适用期, 流变性能, 粘接性能

Abstract: In order to solve the problem of short pot life to surface curing of silicate adhesives into film when exposed in air, the adhesives were modified by adding polyethylene glycol (PEG) to silicate adhesives, and the pot life, rheological performance, microscopic morphology, molecular structure, thermal stability and adhesive performance were systematically studied by using rheometer, scanning electron microscope, infrared spectrometer, thermogravimetric infrared mass spectrometer and universal tensile machine. The results show that when the PEG dosage in silicate adhesives is 6% (mass fraction), the pot life is extended to 50 min. The PEG is uniformly distributed inside adhesive, which significantly enhances the densification and thixotropy. The pre-curing activation energy calculated by Arrhenius equation increases from 8.47 kJ/mol to 12.61 kJ/mol. PEG does not affect the bonding performance of system and has a good extension effect on the pot life of same types of silicate adhesives.

Key words: silicate adhesive, polyethylene glycol, pot life, rheological performance, bonding performance

中图分类号:

TQ433.5⁺2

沈镇强, 王玉丹, 曹先启, 宋来明, 薛金龙, 王超. 聚乙二醇对硅酸盐胶黏剂适用期与性能的影响[J]. 硅酸盐通报, 2024, 43(1): 317-328.

SHEN Zhenqiang, WANG Yudan, CAO Xianqi, SONG Laiming, XUE Jinlong, WANG Chao. Effect of Polyethylene Glycol on Pot Life and Performances of Silicate Adhesives[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(1): 317-328.

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