Preparation and Performance Characterization of Modified Phosphate Adhesives

被引：0
|
作者：
Mo Y. [1 ]
Pang L. [1 ]
Liu Q. [1 ]
Liu H. [1 ]
机构：
[1] School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an
来源：
Cailiao Daobao/Materials Reports | 2023年 / 37卷 / 14期
基金：
中国国家自然科学基金;
关键词：
bonding strength; chromium oxide; curing time; modified phosphate adhesive; room temperature cured;
D O I：
10.11896/cldb.23020041
中图分类号：
学科分类号：
摘要：
In this work,the phosphate liquid was prepared by phosphoric acid and aluminum hydroxide. Modified aluminum dihydrogen phosphate base liquid was prepared by adding chromium oxide as modifier. Three modified phosphate adhesives were prepared by modified aluminum dihydrogen phosphate base liquid with three curing agents:chromium oxide,alumina and magnesium oxide. The effects of chromium oxide modifier dosage and different curing agents on the composition,viscosity and film-forming properties of modified aluminum dihydrogen phosphate base liquid and modified phosphate adhesive were studied. Besides,the changes in bonding strength and curing time of different types of modified phosphate adhesives when applied to ceramic materials were further studied. The results showed that the optimal amount of chromium oxide modifier in modified aluminum dihydrogen phosphate base liquid is 8%. By separately adding 7. 5% chromium oxide,alumina and magnesium oxide could obtain a modified phosphate adhesive with optimal bonding strength. The maximum bonding strength is 1. 22 MPa,1. 11 MPa and 0. 73 MPa,respectively. As well as the curing times were 8 h,8 h and 6 h. With the combined action of modifier and curing agents,it could be cured at the room temperature by step-by-step curing. It optimizes the curing process,improves the bonding strength of the adhesive,and shortens the curing time. © 2023 Cailiao Daobaoshe/ Materials Review. All rights reserved.
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