Page 95 - 2025水性涂料虚拟专辑
P. 95

第54卷第 7 期                                     涂料工业                                     Vol. 54  No. 7
              2024年 7 月            艺 等:聚乙二醇改性水性环氧丙烯酸酯的合成及其光固化动力学研究                                    Jul.  2024
                                                   PAINT & COATINGS INDUSTRY


                             聚   改性水性环氧丙烯酸酯的合成


                                           及其光固化动力学研究



                                                 伟 ,             *1,2 ,      1,2
                                                       1
                                       (1. 东华大学化学与化工学院,上海 201620;
                                  2. 东华大学生     部重点实验室,上海 201620)

                     摘 要:为克服水性环氧丙烯酸酯脆性高的缺点,首先采用不同相对分子质量的聚乙二醇(PEG)
                 对环氧树脂 E51 进行柔韧性改性,生成低黏度环氧树脂,将其与丙烯酸反应,得到低黏度环氧丙烯酸
                 酯树脂,再引入丁二酸 基团,然后用三乙胺中和成盐,加水乳化,合成了 PEG 改性水性环氧丙烯酸
                 酯(PEG-WEA)乳液;将 PEG-WEA 乳液涂覆在聚对苯二甲酸乙二醇酯(PET)基材上。通过 立叶变
                 换红外光谱仪(FT-IR)和凝胶渗透色谱仪(GPC)表征 PEG 改性环氧树脂,探究 PEG 相对分子质量对
                 PEG-WEA 乳液粒径、光固化动力学行为、光固化膜热稳定性、力学性能以及涂层性能的影响。结果
                 表明:PEG 相对分子质量为 600 时,制得的 PEG-WEA 乳液粒径最小(77. 96 nm),双键转化率得到提
                 升,光固化膜热稳定性良好且呈现良好的韧性断裂特征,断裂伸长率提高 7. 54%,同时固化后涂层硬
                 度达3H,柔韧性1 mm,附着力2级。
                     关键词:光固化;聚乙二醇;环氧丙烯酸酯;水性涂料
                     中图分类号:TQ637  文献标志码:A  文章编号:0253-4312(2024)07-0016-07
                     doi:10. 12020/j. issn. 0253-4312. 2024-045
                    Synthesis of Polyethylene Glycol Modified Waterborne Epoxy

                                     Acrylate and Its UV-curing Kinetics



                                                       1
                                                                 1,2
                                              LU Yiwei ,DU Juan ,LUO Yan     1,2
                   (1. College of Chemistry and Chemical Engineering, onghua University,Shanghai   201620,China;2. Key
                       Laboratory of Eco-textile of Ministry of Education, onghua University,Shanghai   201620,China)

                      Abstract:In  order  to  solve  the  high  brittleness  of  epoxy  acrylate,ow  viscosity  epoxy
                                                                                         l
                 resin  was  firstly  prepared  by  flexibility  modification  of  E51  epoxy  resin  using  polyethylene

                 glycol(PEG)with different relative molecular mass. The modified resin was then used to react
                 with  acrylic  acid  to  prepare  a  low-viscosity  epoxy  acrylate  resin. Next,succinic  anhydride

                 moiety  was  introduced  into  the  epoxy  acrylate  resin,which  was  then  neutralized  by
                 triethylamine  into  a  salt  and  emulsified  with  water  to  obtain  the  PEG-modified  waterborne
                 epoxy  acrylate(PEG-WEA) emulsion. Finally  the  prepared  emulsion  was  coated  on  a

                 polyethylene  terephthalate(PET) substrate. The  PEG-WEA  was  characterized  by  Fourier


                 transform infrared spectroscopy(FT-IR)and Gel permeation chromatography(GPC)to study

             *通信作者:杜 (1971—), , 教授,从事新材料和助剂研究工作。
             本文规范引用格式:
              艺伟,杜  ,罗艳. 聚乙二醇改性水性环氧丙烯酸酯的合成及其光固化动力学研究[J]. 涂料工业,2024,54(7):16-22.
             LU  Y  W,DU  J,LUO  Y. Synthesis of polyethylene glycol modified waterborne epoxy acrylate and its UV-curing kinetics[J]. Paint & Coatings Industry,
             2024,54(7):16-22.
                                                                                                           0
   90   91   92   93   94   95   96   97   98   99   100