以异佛尔酮二异氰酸酯(IPDI)、聚己内酯二元醇(PCL1000)、二羟甲基丁酸(DMBA)、季戊四醇三丙烯酸酯(PETA)和丙酮等为原料合成了水性光固化聚氨酯-丙烯酸酯复合乳液,并利用该乳液对纸张进行表面施胶。通过傅立叶红外光谱(FT-IR)和光散射对乳液的结构进行了分析；研究了n(NCO)/n(OH)比值(R 值)对乳液和涂膜耐水性和力学性能的影响,紫外光(UV)固化前后对纸张物理性能的影响。结果表明,当n(NCO)/n(OH)=1.6,m(PETA)=12.6%时,乳液具有良好的稳定性,涂膜呈现良好的耐水性和力学强度,吸水率降至3.66%；UV固化后纸张湿强度提高41.65%,纸张环压指数达到5.25N·m/g。
Waterborne UV curable polyurethane-acrylate emulsion was prepared with isophorone diisocyanate (IPDI),polycaprolactone diols (PCL1000),2,2-dimethylolbuty ricacid (DMBA),pentaerythritol triacrylate (PETA)and acetone as raw materials.And the emulsions were utilized for paper surface sizing.Fourier trans-form infrared spectrometer (FT-IR)and light scattering were used to analyze the structure of emulsion;effects of n(NCO)/n(OH)(R value)on the emulsion properties were systematically studied ,as well as the water re-sistance and mechanical property of corresponding films.In addition,effects of UV curing on paper physical properties were discussed.The results showed that the emulsions were stable and the films displayed good wa-ter resistance and mechanical property,the water absorption decreased to 3.66% when n(NCO)/n(OH)=1.6, m(PETA)=12.6%.After UV curing,the wet strength of paper increased to 41.65%,and the ring crush in-dex of paper reached 5.25N·m/g.
参考文献
| [1] | 杨春海,何卫东,谢文心.光固化聚氨酯丙烯酸酯涂料的合成及其性能研究[J].化工时刊,2006(04):34-37. |
| [2] | 金雪玲,孙道兴,王凤英.水性光固化聚氨酯改性环氧丙烯酸树脂的研究[J].现代涂料与涂装,2007(10):8-9. |
| [3] | 彭威,姜其斌.紫外光固化聚氨酯丙烯酸酯的研究进展[J].包装学报,2011(02):30-33. |
| [4] | 方振华,陈宏伟,尚建疆,刘志勇,骈继鑫,孙伟.双酚A改性UV固化水性聚氨酯涂料的制备及性能研究[J].功能材料,2010(z1):72-75. |
| [5] | 罗雪方,赵秀丽,黄奕刚,白战争,刘勇.水性光敏聚氨酯丙烯酸酯的合成与性能研究[J].中国涂料,2008(12):43-46. |
| [6] | 樊庆春,俞刚,郭怀兵,孙波.紫外光固化聚氨酯改性环氧丙烯酸酯的制备[J].现代涂料与涂装,2010(09):5-6,9. |
| [7] | 石智强,季宁宁.紫外光固化聚氨酯丙烯酸树脂的研究进展[J].广州化学,2007(03):65-70. |
| [8] | Kr · lP .Synthesis methods, chemical structures and phase structures of linear polyurethane.Properties and applications of linear polyurethanes in polyurethane elasto-mers,copolymers and ionomers[J].Progress in Materi-als Science,2007,52(06):915-1015. |
| [9] | 杨娟,王贵友,胡春圃.扩链剂对脂肪族聚氨酯脲和聚脲弹性体结构与性能的影响[J].化学学报,2006(16):1737-1742. |
| [10] | Urska Sebenik;Janvit Golob;Matjaz Krajnc .Comparison of properties of acrylic-polyurethane hybrid emulsions prepared by batch and semibatch processes with monomer emulsion feed[J].Polymer international,2003(5):740-748. |
| [11] | 李轩,沈一丁,李小瑞,费贵强,史阳阳.聚氨酯/羧基丁苯胶胶乳的表面施胶及其交联对纸张表面强度及耐折度的影响[J].功能材料,2011(11):2096-2099. |
| [12] | Bai CY;Zhang XY;Dai JB .Effect of the hard segment on the properties of UV curable waterborne blocked polyurethanes[J].Journal of Polymer Research,2008(1):67-73. |
| [13] | Hirose Masakazu;Zhou Jianhui .The structure and properties of acrylic-polyurethane hybrid emulsions[J].Progress in Organic Coatings: An International Review Journal,2000(1):27-34. |
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