Page 70 - 201906

第 36 卷第 6 期 精 细 化 工 Vol.36, No.6
201 9 年 6 月 FINE CHEMICALS June 2019

功能材料
功能化石墨烯改性无胺型水性聚氨酯的制备

1
1
刘佳慧 ，赖小娟 1,2* ，王 磊 1,2 ，张引引
（1. 陕西科技大学 陕西省轻化工助剂重点实验室，陕西 西安 710021；2. 陕西农产品加工技术研究院，
陕西 西安 710021）

摘要：以聚己内酯二元醇（PCL）、甲苯二异氰酸酯（TDI）、甲基丙烯酸甲酯（MMA）为主要原料，合成水性
聚氨酯-丙烯酸酯乳液（WPUA）预聚体。将偶联改性的纳米 SiO 2 与氧化石墨烯进行接枝后，与聚氨酯-丙烯酸
酯乳液预聚体进行原位聚合，用自乳化法制备了经功能化石墨烯改性的无胺型水性聚氨酯-丙烯酸酯复合乳液
（SiO 2 -NH 2 -GO/WPUA），对功能化石墨烯的用量进行讨论，并对其复合乳液、胶膜结构及性能进行测试。与水
性聚氨酯-丙烯酸酯（WPUA）相比，SiO 2 -NH 2 -GO/WPUA 具有更好的耐温性及胶膜性能，当氧化石墨烯接枝
SiO 2 （SiO 2 -NH 2 -GO）质量分数为 0.75%时，复合乳液胶膜较未改性乳液胶膜相比，热分解温度提高 14.51 ℃；
拉伸强度提高到 81.28 MPa;该复合乳液配制的胶黏剂在铝箔/PVC 薄膜的 T-剥离强度达到 15.4 N；易氧化物含量
指标符合药品包装容器标准，表明该水性聚氨酯胶黏剂适用于医药包装。
关键词：水性聚氨酯聚丙烯酸酯；氧化石墨烯；硅烷偶联剂；原位聚合；热分解；医药包装；功能材料
中图分类号：TQ323.8 文献标识码：A 文章编号：1003-5214 (2019) 06-1076-08

Preparation of Functionalized Graphene Modified Amine-Free

Waterborne Polyurethane

1
1
1,2
LIU Jia-hui , LAI Xiao-juan 1,2* , WANG Lei , ZHANG Yin-yin
（1. Shaanxi Province Key Laboratory of Light Chemical Additives, Shaanxi University of Science &Technology, Xi'an 710021,
Shaanxi, China; 2. Shaanxi Agricultural Products Processing Technology Research Institute, Xi'an 710021, Shaanxi, China）

Abstract: A water-borne polyurethane-acrylate emulsion (WPUA) prepolymer was synthesized by using
polycaprolactone diol (PCL), toluene diisocyanate (TDI) and methyl methacrylate (MMA) as main raw
materials. After the coupling modified nano-SiO 2 was grafted with graphene oxide, it polymerized with the
polyurethane prepolymer in situ to prepare amine-free waterborne polyurethane-acrylate composite
(SiO 2-NH 2-GO/WPUA ) emulsions modified by functionalized graphene. The amount of functionalized
graphene was discussed, and the composite emulsions and films were tested and characterized. Compared
with waterborne polyurethane-acrylate (WPUA), SiO 2-NH 2-GO/WPUA had better temperature resistance
and film properties. When the SiO 2-NH 2-GO mass fraction was 0.75%, the thermal decomposition
temperature of the prepared SiO 2-NH 2-GO emulsion film was 14.51 ℃ higher than that of unmodified
emulsion film. The tensile strength was increased to 81.28 MPa. The T-peel strength of the adhesive
prepared by the composite emulsion in aluminum foil/PVC film reached 15.4 N. The indexes such as easy
oxide met the standard of pharmaceutical packaging containers, indicating that this waterborne
polyurethane adhesive was suitable for pharmaceutical packaging.
Key words: waterborne polyurethane polyacrylate; graphene oxide; silane coupling agent; in situ polymerization;
thermal decomposition; pharmaceutical packaging; functional materials
Foundation items: National Natural Science Foundation of China (51103081); Shaanxi Province Industrial
Science and Technology Research Project (2014K08-11, 2016GY-241); Key Laboratory Project of Shaanxi

收稿日期：2018-07-21; 定用日期：2019-01-31; DOI: 10.13550/j.jxhg.20180540
基金项目：国家自然科学基金（51103081）；陕西省工业科技攻关项目（2014K08-11 和 2016GY-241）；陕西省教育厅重点实验室项目
（17JS012）；陕西省青年科技新星项目（2018KJXX-023）；西安市科技计划项目（2017068C 和 201805024YD2CG8）
作者简介：刘佳慧（1993—），女，硕士生。联系人：赖小娟（1984—），女，博士，教授，E-mail：3578466@163.com。