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化学工业与工程 2023, Vol. 40 Issue (2) :9-16    DOI: 10.13353/j.issn.1004.9533.20210362
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水性聚氨酯热熔胶的制备及性能
门园丽, 刘晨, 耿佳琦, 袁才登
天津大学化工学院, 天津 300350
Preparation and properties of waterborne polyurethane hot melt adhesive
MEN Yuanli, LIU Chen, GENG Jiaqi, YUAN Caideng
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China

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摘要 以甲苯二异氰酸酯、聚己二酸-1,4-丁二醇酯(PBA)、聚环氧丙烷醚三醇(PPO)为主要单体,2,2-二羟甲基丙酸(DMPA)为羧基单体,1,4-丁二醇为扩链剂合成了聚氨酯预聚体,并以三乙胺为中和剂,进一步制备了阴离子水性聚氨酯乳液。考察了交联单体PPO含量对乳液及胶膜性能的影响。结果表明,n(PBA)∶n(PPO)=9∶1时,乳液稳定性好,聚氨酯膜的拉伸强度为44.18 MPa,断裂伸长率为742.94%,其热分解温度为239 ℃,对皮革的黏接强度高于皮革的内聚强度,对不锈钢的黏接剪切强度为14.76 MPa。
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作者相关文章
门园丽
刘晨
耿佳琦
袁才登
关键词水性聚氨酯   热熔胶   黏接强度   搭接剪切强度     
Abstract: The polyurethane prepolymer was synthesized using toluene diisocyanate, poly (butylene adipate) diol (PBA) and poly(propylene oxide) triol (PPO) as main monomers, 2,2-dimethylolpropionic acid (DMPA) as carboxylic monomer and 1,4-butanediol (BDO) as chain extender. Anionic waterborne polyurethane emulsion was further prepared using triethylamine (TEA) as neutralizer. The effect of PPO content on the properties of emulsion and polyurethane film was investigated. The results show that when n(PBA)∶n(PPO)=9∶1, the prepared emulsion has good stability, the tensile strength and elongation at break of the polyurethane film are 44.18 MPa and 742.94%, respectively, the thermal decomposition temperature is 239 ℃, the bonding strength to leather is higher than the cohesive strength of the leather and the lap shear strength to stainless steel is 14.76 MPa.
Keywordswaterborne polyurethane   hot melt adhesive   bonding strength   lap shear strength     
Received 2021-05-08;
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Corresponding Authors: 袁才登,副教授,E-mail:cdyuan@tju.edu.cn     Email: cdyuan@tju.edu.cn
About author: 门园丽(1995-),女,硕士研究生,现从事水性树脂合成方面的研究。
引用本文:   
门园丽, 刘晨, 耿佳琦, 袁才登.水性聚氨酯热熔胶的制备及性能[J].  化学工业与工程, 2023,40(2): 9-16
MEN Yuanli, LIU Chen, GENG Jiaqi, YUAN Caideng.Preparation and properties of waterborne polyurethane hot melt adhesive[J].  Chemcial Industry and Engineering, 2023,40(2): 9-16
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