水性聚氨酯/聚乙烯醇复合表面施胶剂在特种纸上的应用  

Application of water-borne polyurethane/polyvinyl alcohol composite surface sizing agent in the specialty paper

作　　者：费贵强 王永超[1] 王海花[1] 朱科[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安710021

出　　处：《功能材料》2014年第18期18148-18152,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(21204046;51373091);陕西省中国科学技术研究发展计划资助项目(2013KJXX-77);陕西省教育厅重点实验室资助项目(13JS018)

摘　　要：以聚己内酯二元醇(PCL,Mn=1000)、甲苯二异氰酸酯(TDI)和二羟甲基丙酸(DMPA)为原料,采用自乳化法制备水性聚氨酯(WPU)乳液,并用此聚氨酯乳液与聚乙烯醇(PVA)以及外加交联剂氮丙啶进行复配制得WPU/PVA复合乳液。实验研究了m(WPU)/m(PVA)对复合乳液性能及纸张表面性能的影响。研究表明,当复合乳液中WPU含量为75%,此WPU/PVA复合乳液具有优异的表面施胶性能,纸张耐折度达到1 025次,干湿强度分别为162.3,57.4N,施胶度达到97s。并通过红外光谱(FT-IR)、动态激光光散射法(DLS)及热重分析(TGA)对聚合物进行了表征。The anionic waterborne polyurethane emulsion was successfully prepared by the reaction of polycapro-lactone diols (PCL),toluene diisocyanate(TDI),dimethylolpropionic acid(DMPA).A series of waterborne polyurethane/polyvinyl alcohol compound latex were synthesized by polyurethane,polyvinyl alcohol and aziri-dine as crosslinker. The results show that the compound emulsion owns excellent sizing property when m(WPU)=75%.The papers’folding endurance can reach 1 025 times,paper stiffness reach 72.1 mN,the dry and wet tensile strength respectively reach 162.3,57.4 N,sizing value reach 97 s.The polymer was character-ized with FT-IR,DLS and TG.

关 键 词：水性聚氨酯 聚乙烯醇 表面施胶剂 交联 耐折度 

分 类 号：TQ630[化学工程—精细化工]