有机桥连聚倍半硅氧烷光学防潮涂层的制备
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TQ630

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Preparation of organic bridging polysilsesquiloxane optical moisture-proof coating
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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    为了制备性能优异的防潮涂层,以巯丙基三甲氧基硅烷(MPTMS)和3-(甲基丙烯酰氧)-丙基三甲氧基硅烷(MATMS)为原料,经巯-烯点击反应制备有机桥连硅烷前驱体3-三甲氧硅基丙基-2-甲基-3-[(3-三甲氧硅基)丙基硫代]丙酸酯 (MPMA)。采用溶胶-凝胶法在酸性条件下水解-缩聚得到溶胶,将其分别沉积在载玻片和聚醚酰亚胺(PEI)上得到有机桥连聚倍半硅氧烷涂层。通过测试水蒸汽传输速率(WVTR)值对涂层的防潮性能进行评价,并探究胶体老化时间对涂层防潮性能的影响规律。结果表明:溶胶老化30 h时涂层的WVTR值最低为3.13 g·m-2·d-1,具有优异的防潮性能,且涂层光透明性好,附着力达到0级,铅笔硬度为3H。

    Abstract:

    In order to prepare coatings with excellent moisture-proof performance, organic-bridged silane precursor 3-trimethonylsilylpropyl-2-methyl-3-[(3-trimethonylsilyl)propylsulfanyl]propionate (MPMA) were prepared by mercaptopropyl trimethoxy silane (MPTMS) and 3-(methylacrylloxy)-propyl trimethoxy silane (MATMS) via thiol-ene click reaction. The MPMA sol was obtained by hydrolyzation and condensation polymerization under acidic conditions through sol-gel method. Then the organic-bridged polysilsesquioxane coating were fabricated by depositing MPMA sol on glass slide through dip-coating method and on polyetherimide (PEI) through coating method, respectively. The moisture-proof performance of the coating was explored by measuring the water vapor transport rate (WVTR) and the effect of aging time on the moisture-proof performance of coatings was investigated. The results showed that the WVTR of coatings was as low as 3.13 g·m-2·d-1 when the sol aging time was 30 h, indicating that the coating possessed excellent moisture-proof property. Besides, the coating performed good optical transmittance, level 0 in adhesion evaluation test and 3H pencil hardness.

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张策,马聪,付学文,董佳佳,张万斌,张光华.有机桥连聚倍半硅氧烷光学防潮涂层的制备[J].精细化工,2022,39(1):

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  • 收稿日期:2021-07-23
  • 最后修改日期:2021-10-12
  • 录用日期:2021-10-13
  • 在线发布日期: 2021-12-06
  • 出版日期: