聚氨酯与聚丙烯酸酯乳液互穿网络聚合物的制备  

Preparation of polyurethane/polyacrylate emulsion interpenetrating polymer network

作　　者：陶响娥 王昱 翟玉福 Tao Xiange;Wang Yu;Zhai Yufu(Guangzhou Vocational and Technical University of Science and Technology,Guangzhou 510550,Guangdong,China;Guangdong University of Technology,Guangzhou 510006,Guangdong,China)

机构地区：[1]广州科技职业技术大学,广东广州510550 [2]广东工业大学,广东广州510006

出　　处：《中国胶粘剂》2022年第11期26-32,共7页China Adhesives

摘　　要：采用聚碳酸亚丙酯二醇为软段合成水性聚氨酯(WPU),并采用互穿网络技术制备聚氨酯(PU)与聚丙烯酸酯(PA)的乳液互穿网络聚合物(PU/PA LIPN)。研究了聚氨酯与聚丙烯酸酯乳液互穿网络聚合物的性能,探究了不同引发剂对于合成PU/PA LIPN的影响,还研究了聚丙烯酸酯不同组分对于PU/PA LIPN多种性能的影响以及不同聚丙烯酸酯/聚氨酯的占比对PU/PA LIPN性能的影响。研究结果表明:PA与PU互穿程度较好,玻璃化转变温度(T)相互靠拢,聚甲基丙烯酸甲酯(PMMA)已经在PU中合成;使用不同引发剂引发PA,对比之下使用过硫酸铵(APS)效果较好,能够合成乳液稳定、成膜良好的PU/PA LIPN;改变PA组分比例,随着PA中软段BA的含量升高,制备的聚氨酯乳液力学性能降低,但是耐水性有所增强;改变PA/PU占比,当PA占比增多时,乳液的耐水性与力学性能先升高后降低,30%PA占比效果较好。Waterborne polyurethane(WPU)was synthesized by using polypropylene carbonate diol as soft segment,and the emulsion interpenetrating polymer network(PU/PA LIPN) of polyurethane(PU) and polyacrylate(PA) was prepared by interpenetrating network technology. The properties of polyurethane and polyacrylate emulsion interpenetrating polymer network were studied,the effects of different initiators on the synthesis of PU/PA LIPN were investigated. The effects of different components of polyacrylate on the properties of PU/PA LIPN and the effects of different proportions of polyacrylate/polyurethane on the properties of PU/PA LIPN were also studied. The research results showed that PA and PU had good interpenetration,the glass transition temperature(Tg)was close to each other,and polymethyl methacrylate(PMMA)had been synthesized in PU.Different initiators were used to initiate PA,comparatively ammonium persulfate(APS)had better effect,which could synthesize PU/PA LIPN with stable emulsion and good film formation. When the components of PA were changed,with the increase of the content of BA in the soft segment of PA,the mechanical properties of the prepared polyurethane emulsion decreased,but the water resistance increased. When the proportion of PA/PU was changed,with the increase of the proportion of PA,the water resistance and mechanical properties of emulsion first increased and then decreased,and the proportion of 30% PA was excellent.

关 键 词：聚碳酸亚丙酯二醇(PPCD) 互穿网络聚合物 水性聚氨酯 

分 类 号：TQ433.4[化学工程] TS802.3[轻工技术与工程]