化工进展

• 材料科学与技术 • 上一篇    下一篇

水性聚氨酯/聚乙烯醇复合材料的制备与性能

赵彩霞,邹国享,李锦春   

  1. 常州大学材料科学与工程学院,江苏 常州 213164
  • 出版日期:2011-10-05 发布日期:2011-10-05

Preparation and characterization of waterborne polyurethane/polyvinyl alcohol composite

ZHAO Caixia,ZOU Guoxiang,LI Jinchun   

  1. School of Materials Science and Engineering,Changzhou University,Changzhou 213164,Jiangsu,China
  • Online:2011-10-05 Published:2011-10-05

摘要:

水性聚氨酯(WBPU)乳液与聚乙烯醇(PVA)溶液共混制备了WBPU/PVA复合材料。通过FTIR、透光率AFM拉伸测试吸水率TG等表征方法研究了材料的相容性以及PVA含量对复合材料的力学性能、耐水性和热性能的影响。实验结果表明,WBPUPVA间存在分子间氢键作用;当PVA含量为80%时,两组分具有相对较高的相容性,且此时复合材料具有最大的拉伸强度61.9 MPa,相对于WBPU24.9 MPa)和PVA44.7 MPa)分别提高了149%38%;随着PVA含量的增加,复合材料的断裂伸长率和耐水性呈现降低的趋势。

Abstract:

WBPU/PVA composites were prepared by blending WBPU emulsions with PVA solution and characterized by using FTIRtransmittanceAFMtensile testingwater absorptionand TGrespectively. The effects of PVA content on the properties of the composites film were also investigated. Results show that strong hydrogen bonding action exists between two components. The WBPU/PVA composite with 80% PVA shows excellent compatibilityand the tensile strength of it reaches up to the maximum61.9 MPaby about 149% and 38% compared with pure WBPU24.9 MPaand pure PVA44.7 MPa),respectively. The elongation at break and water resistance of WBPU/PVA composites declined with the increasing of PVA content.

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