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作 者:卢国享 王中荔 LU Guoxiang;WANG Zhongli(Guangxi Vocational and Technical College of Industry,Nanning 530001,China)
出 处:《真空》2025年第2期28-34,共7页Vacuum
基 金:广西职业教育教学改革研究项目(GXGZJG2022B032);自治区教育厅2023年度广西高校中青年教师科研基础能力提升项目,桂教科研(2023)2号(2023KY1321)。
摘 要:为确保瓷砖粘合剂制备过程中的稳定性并优化其粘接性能,研究了结合真空技术的新型材料瓷砖粘合剂的制备方法与性能。根据标准瓷砖尺寸制备瓷砖粘合的混凝土表面试块,并根据室内装饰施工场景为其涂刷防水材料。对邻苯二甲酸氢钾和甲苯二异氰酸酯进行真空合成,制备瓷砖粘合剂预聚物。通过迈克尔加成反应使粘合剂预聚物改性,降低其生物毒性。利用真空干燥箱对改性粘合剂预聚物进行干燥处理,调控干燥过程,获得粘合剂初产物。利用真空干燥箱和循环水真空泵排除水分和空气干扰,保证粘合剂在真空稳定状态下完成最终制备。实验结果表明,粘合剂的傅立叶变换红外光谱中含有大量的叠氮基团,生物毒性较低。粘合剂与瓷砖表面及混凝土表面的接触角均小于90°。在应变值为8%~11%时,粘合剂的力学性能较优。在环境温度为180℃以下时,粘合剂的热稳定性较优。该新型材料瓷砖粘合剂在室内装饰施工领域中的应用较为环保,在真空稳定状态下粘合剂与瓷砖分子作用受空气和水分子影响较小,粘附性能较优。In order to ensure the stability and optimize the bonding properties of ceramic tile adhesives,the preparation method with vacuum technology and properties of new material ceramic tile adhesive combined were studied.The concrete surface test blocks for tile bonding according to standard tile sizes were prepared,and waterproof materials were applied to them according to indoor decoration construction scenarios.Ceramic tile adhesive prepolymer was prepared by vacuum synthesis of potassium hydrogen phthalate and toluene diisocyanate.The adhesive prepolymer was modified through Michael addition reaction to reduce biological toxicity.A vacuum drying oven was used to dry the modified adhesive prepolymer,regulating the drying process to obtain the initial adhesive product.Vacuum drying oven and circulating water vacuum pump were used to eliminate water and air interference,ensuring that the adhesive can be prepared completely in the vacuum stable state.The experimental results indicate that the Fourier transform infrared spectrum of the adhesive contains a large number of azide groups and has low biological toxicity.The contact angle between the adhesive and the surface of ceramic tiles and concrete is less than 90°.When the strain is 8%-11%,the mechanical property of the adhesive is better.When the environment temperature is below 180℃,the thermal stability of the adhesive is better.The application of the newly prepared ceramic tile adhesive in the field of indoor decoration construction is relatively environmentally friendly.In a vacuum stable state,the interaction between the adhesive and ceramic tile molecules is less affected by air and water molecules,and the adhesion performance is better.
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