水可分散型多异氰酸酯的制备与应用
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陕西省教育厅重点实验室项目;陕西省科技计划项目


Preparation and Application of Water Dispersible Polyisocyanate
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Shaanxi Provincial Department of Education Key Laboratory Project;Shaanxi Province Science and Technology Project

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    摘要:

    以N- 乙烯基吡咯烷酮 (VP)、丙烯酸丁酯(BA)、甲基丙烯酸-2-羧乙酯(CA)为单体,通过溶液聚合,制得高分子表面活性剂P(VP-co-BA-co-CA)。以P(VP-co-BA-co-CA)乳化分散1,6-己二异氰酸酯(HDI )三聚体,制得水可分散型HDI三聚体(WD-HDIT),考察了BA质量分数、CA质量分数和HDI三聚体质量分数对乳液粒径和施胶性能的影响。探讨了WD-HDIT乳液对纸张表面的施胶性能。结果表明,当w(VP)=5.0%,w(BA)=3.4%,w(CA)=1.3%,w(HDI三聚体)=60.0% 时,施胶剂乳液WD-HDIT具有良好的稳定性和优异的施胶特性。以WD-HDIT质量分数为10%的施胶剂乳液进行表面施胶,纸张施胶度达29s,纸张与水接触角达119.49°,耐折度达67次,抗张指数达55.8N·m/g,抗弯挺度指数为2.003 N•m7/kg3,环压强度指数为5.1468N•m/g。

    Abstract:

    P(VP-co-BA-co-CA) polymer surfactant was obtained from N-vinyl-2-pyrrolidone(VP),butyl acrylate (BA),carboxyethyl-2-methacrylate(CA) by solution polymerization.And the water-dispersible 1, 6-diisocyanate (HDI) trimer(abbreviated as WD-HDIT) was prepared from 1,6-diisocyanate(HDI) trimer and P(VP-co-BA-co-CA), which used as an emulsifier. The surface sizing properties of WD-HDIT emulsion were discussed and the synthetic condition were also optimized. The results showed that the emulsion presents excellent stability and outstanding sizing properties when w(VP) was 5.0%,w(BA) was 3.4%,w(CA) was1.3%,w(HDI) was 60.0%.Paper sizing value could reach 29 s,the water contact angle was 119.49°, the folding endurance could approach 67 times, the paper tensile strength was 55.8N·m/g, the bending stiffness was 2.003 N•m7/kg3, the ring crush strength was 5.1468N•m/g when the dosage of the sizing agent was 10%.

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费贵强.水可分散型多异氰酸酯的制备与应用[J].精细化工,2018,35(8):

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  • 收稿日期:2018-03-28
  • 最后修改日期:2018-07-06
  • 录用日期:2018-07-06
  • 在线发布日期: 2018-07-10
  • 出版日期: