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针对聚酯胶粘剂熔融黏度大、操作困难，耐热和耐水性能不足的问题，采用丙烯酸树脂、邻苯二甲酸二丁酯（DBP）、二月桂酸二丁基锡（DBTDL）、六亚甲基二异氰酸酯（HDI）对聚酯进行改性。研究了改性剂含量对聚酯胶粘剂粘接强度的影响，确定了改性聚酯胶粘剂最优配方。采用该配方制备光伏背板胶粘剂，用于背板复合，并研究了改性胶粘剂的耐热、耐化学试剂和耐水性能。研究结果表明：通过单因素试验与正交试验，确定改性聚酯胶粘剂的最优配方为：m（聚酯）∶m(HDI)=20∶1.0，丙烯酸树脂添加量为聚酯质量的25%,DBP为丙烯酸树脂质量的7%,DBTDL为丙烯酸树脂质量的6%。通过HDI、丙烯酸树脂、DBP与DBTDL的协同改性，可显著提高聚酯胶粘剂的剥离强度、热稳定性、耐化学试剂性能及耐水性能。该胶粘剂适用于光伏背板等需长期在户外环境中使用的领域。
Abstract：Aiming to address the problems of high melt viscosity,difficult processing,and insufficient heat and water resistance of polyester adhesive,modifications were made to the polyester by using acrylic resin,dibutyl phthalate(DBP),dibutyltin dilaurate(DBTDL),and hexamethylene diisocyanate(HDI). The effect of modifier content on the bonding strength of polyester adhesive was studied,and the optimal formula for modified polyester adhesive was determined.The photovoltaic backsheet adhesive was prepared by using this formula for backsheet lamination,and the heat resistance,chemical reagent resistance,and water resistance of the modified adhesive were studied. The research results showed that,the optimal formula for modified polyester adhesive was determined through single factor experiment and orthogonal experiment as follows:m(polyester)∶m(HDI)=20∶1.0,the amount of acrylic resin added was 25% of the polyester mass,DBP was 7% of the acrylic resin mass,and DBTDL was 6% of the acrylic resin mass. The synergistic modification of HDI,acrylic resin,DBP,and DBTDL could significantly improve the peel strength,thermal stability,chemical reagent resistance,and water resistance of polyester adhesive.This adhesive was suitable for fields such as photovoltaic backsheet that required long-term outdoor exposure.
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基本信息:
DOI：10.13416/j.ca.2026.01.008
中图分类号:TQ433.43
引用信息:
[1]刘磊好,陈建清,刘鑫,等.高强耐热聚酯型光伏背板胶粘剂的制备与应用研究[J].中国胶粘剂,2026,35(01):24-31.DOI:10.13416/j.ca.2026.01.008.
基金信息:
苏州市产业前瞻与关键核心技术项目（SYC2022047）; 江苏省产学研前瞻性联合研究项目（BY2015002-02）
2026-01-29
2026-01-29