Page 54 - 201903
P. 54

第 36 卷第 3 期                             精   细   化   工                                  Vol.36, No.3
             201 9 年 3 月                             FINE CHEMICALS                                 Mar.    2019


              功能材料
                    聚硅氧烷改性水性聚氨酯的合成及其表面性能



                                                     *
                                 胡   俊,黄毅萍 ,许戈文,鲍俊杰,程   芹
                 (安徽大学  化学化工学院,安徽省绿色高分子材料重点实验室,水基高分子材料安徽省工程技术研究中心,
                 安徽  合肥    230601)

                 摘要:以聚氧化丙烯二醇(PPG)、双羟基亲水性聚硅氧烷多元醇(UC3667)为软段,异佛尔酮二异氰酸酯(IPDI)、
                 1,4-丁二醇(BDO)、二羟甲基丙酸(DMPA)、乙二胺(EDA)为硬段,制备了一系列聚硅氧烷改性水性聚氨酯
                 (WPUs)。用 DLS 和 FTIR 表征了水性聚氨酯乳液粒径和膜结构。通过热重分析、拉伸测试、接触角测试、XPS
                 对水性聚氨酯胶膜的性能进了测定。结果表明:随着聚硅氧烷加入量的增多,水性聚氨酯膜拉伸强度先增大后
                 减小;且聚硅氧烷的加入提高了水性聚氨酯膜的热稳定性、断裂伸长率、接触角,降低了水性聚氨酯膜的表面
                                                                                        2
                 能。当聚硅氧烷质量分数为 5.0%时,胶膜表面的硅迁移量达到饱和,表面能为 27.27 mJ/m 。
                 关键词:水性聚氨酯;聚硅氧烷;迁移;表面能;功能材料
                 中图分类号:TQ311      文献标识码:A      文章编号:1003-5214 (2019) 03-0400-07


                       Synthesis and Surface Properties of Waterborne Polyurethane

                                             Modified by Polysiloxane


                                                     *
                              HU Jun, HUANG Yi-ping , XU Ge-wen, BAO Jun-jie, CHENG Qin
                 (Key Laboratory of Environment-Friendly  Polymer  Materials of Anhui Province, Anhui  Province Engineering
                 Technology Research Center of  Water-Borne Polymer Materials, College of Chemistry and Chemical Engineering,
                 Anhui University, Hefei 230601, Anhui, China)

                 Abstract:  A  series  of  polysiloxane  modified  waterborne  polyurethanes(WPUs)  were  prepared  by  using
                 polyoxypropylene glycol (PPG) and bihydroxy hydrophilic polysiloxane polyol(UC3667) as soft segments,
                 isophoronediisocyanate  (IPDI),  1,4-butanediol  (BDO),  dimethylolpropionic  acid  (DMPA)  and
                 ethylenediamine (EDA) as hardsegments. The particle size and membrane structure of aqueous waterborne
                 polyurethane emulsions were characterized by DLS and FTIR. The properties of waterborne polyurethane
                 films  were  characterized  by  thermogravimetric  analysis,  tensile  test,  contact  angle  test  and  X-ray
                 photoelectron spectroscopy. The results showed that when the content of polysiloxane increased, the tensile
                 strength of waterborne polyurethane films firstly increased and then decreased.Moreover, the introduction
                 of polysiloxane improved the thermal stability,elongation at break, contact angle of waterborne polyurethane
                 films  and  reduced  surface  energy.  When  the  mass  fraction  of  polysiloxane  was  5.0%,  polysiloxane
                                                                                             2
                 migration on the surface of the film reached saturation, and the surface energy was 27.27 mJ/m .
                 Key words: waterborne polyurethane; polysiloxane; migration; surface energy; functional materials
                 Foundation item: Natural Science Foundation of Anhui Province (1808085ME156)


                 聚氨酯具有很多独特的性能,包括良好的耐候                          产中有大量的有机挥发性溶剂,不仅对身体有害,
                                              [1]
            性、力学性能、高弹性和低温灵活性 。近年来,                             而且对环境污染严重。水性聚氨酯(WPU)具有较
            由于环境污染和全球气候变化,生态友好型高分子                             少的挥发性有机化合物(VOCs),有着其独特的优
            材料在各领域受到广泛关注             [2-3] 。传统型聚氨酯在生           点,促使水性聚氨酯在涂料、皮革、纺织品、胶黏


                 收稿日期:2018-07-30;  定用日期:2018-09-20; DOI: 10.13550/j.jxhg.20180569
                 基金项目:安徽省自然科学基金(1808085ME156)
                 作者简介:胡   俊(1992—),女,硕士生。联系人:黄毅萍(1966—),男,教授,E-mail:yphuang2001@sina.com。
   49   50   51   52   53   54   55   56   57   58   59