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摘要
传统的单一聚氨酯乳液存在耐水性和耐热性较差的缺点,目前最有效的方法是对其进行改性,以增强聚氨酯乳液胶粘剂的性能,使其应用更加广泛。控制异氰酸酯指数(R值)为3.5,以聚丙二醇(PPG1000)和甲苯二异氰酸酯(TDI)为主要原料合成聚氨酯预聚体,使用环氧树脂对聚氨酯乳液进行改性。用控制变量法将不同环氧值的环氧树脂和不同添加量的环氧树脂分别作为2个变量,讨论2个变量对乳液及胶膜性能的影响,按照相关标准对其性能进行了测试与表征。结果表明:在相同用量下,环氧树脂E-44的改性效果好于其他类型环氧树脂,E-44添加量为15%(质量分数)时,制备的改性材料性能最佳。
Abstract
The traditional single polyurethane emulsion has the disadvantages of poor water resistance and heat resistance.The most effective method is to modify it to enhance the performance of the polyurethane emulsion adhesive and make it more widely used.Controlling the isocyanate index (R value) of 3.5,polypropylene glycol (PPG1000) and toluene diisocyanate (TDI) were used as the main raw materials to synthesize polyurethane prepolymer,and then the polyurethane emulsion was modified with epoxy resin.Using the controlled variable method,the epoxy resins with different epoxy values and the epoxy resins with different addition amounts were used as two variables to investigate their influence on the performance of the emulsion and the film,and the performance was tested and characterized in accordance with the relevant standards.The results showed that the modification effect of E-44 epoxy resin was better than other types of epoxy resin under the same dosage.When the dosage of E-44 was 15%,the performance of the modified material was the best.
关键词
水性聚氨酯
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环氧树脂
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耐水性
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耐腐蚀性
Key words
waterborne polyurethane
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epoxy resin
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water resistance
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corrosion resistance
环氧树脂改性水性聚氨酯乳液的制备研究[J].
化工新型材料, 2023, 51(4): 92-95 DOI:10.19817/j.cnki.issn1006-3536.2023.04.016
[1] Kim B K,Lee J C.Waterborne polyurethanes and their pro-perties[J].J Polym Sci Polchem,2015,34(6):1095-1104.
[2] 许戈文.水性聚氨酯材料[M].北京:化学工业出版社,2007:14-48.
[3] Scrinzi E,Rossi S,Deflorian F,et al.Evaluation of aesthetic durability of waterborne polyurethane coatings applied on wood for interior applications[J].Prog Org Coat,2011,72(1/2):81-87.
[4] 魏上雄,孙翠玲,窦宝捷,等.氟化石墨烯/水滑石改性环氧树脂胶黏剂的性能研究[J].塑料工业,2021,49(1):44-48;84.
[5] 董永兵,王刚,周艳明,等.环氧树脂改性水性聚氨酯胶黏剂的制备及性能[J].中国皮革,2021,50(8):104-108.
[6] 王明英,赵才德,袁艳,等.环氧树脂改性高固含量水性聚氨酯乳液的制备[J].聚氨酯工业,2021,36(1):8-11.
[7] Zhan Biao,Li Qingshan,Hong Wei,et al.Preparation and properties of epoxy resin modified waterborne polyurethane[J].Applied Mechanics and Materials,2013,320:607-610.
[8] 程博,成煦,杜宗良,等.封端型环氧树脂改性聚氨酯乳液的制备与膜性能研究[J].塑料工业,2016,44(8):18-22.
[9] 詹彪.环氧树脂改性水性聚氨酯乳液的制备与研究[D].秦皇岛:燕山大学,2012.
[10] 宫涛.环氧树脂改性水性聚氨酯胶粘剂的性能研究[J].化工新型材料,2014,42(7):226-228;236.
[11] 贾育霖.环氧树脂和丙烯酸酯共同改性水性聚氨酯的制备与性能研究[D].长春:长春工业大学,2020.
[12] 郭俊杰,张宏元.环氧改性水性聚氨酯胶粘剂在复合薄膜中的应用[J].塑料工业,2005,33(11):53-55.
[13] 肖家伟.E44/KH550改性水性聚氨酯胶粘剂的合成及在UHMWPE纤维上的应用[D].上海:东华大学,2013.
[14] 马端人.丙烯酸酯类、环氧树脂对聚氨酯胶黏剂性能影响的研究[D].青岛:青岛科技大学,2016.
基金资助
辽宁省教育厅项目(lnfw202014,LJKZ0593)
