Synthesis of highly refractive and transparent polyimides derived from 4,4â²-thiobis[2â³,6â³-dimethyl-4â³-(<i>p</i>-phenylenesulfanyl)aniline]
作者:Nam-Ho You、Tomoya Higashihara、Shinji Ando、Mitsuru Ueda
DOI:10.1002/pola.23817
日期:2010.2.1
ortho position of amino groups have been developed to prepare highly refractive and transparent aromatic polyimides (PIs) in the visible region. All aromatic PIs derived from 4,4′‐thiobis[2″‐methyl‐4″‐(p‐phenylenesulfanyl)aniline (2), 4,4′‐thiobis[2,″6″‐dimethyl‐4″‐(p‐phenylenesulfanyl)aniline (5), and aromatic dianhydride, 4,4′‐[p‐thiobis(phenylenesulfanyl)]diphthalic anhydride (6) were prepared via
已开发出在氨基邻位具有甲基的新型含硫芳族二胺,以在可见光区域制备高折射率和透明的芳族聚酰亚胺(PI)。所有衍生自4,4'-硫代双[2”-甲基-4”-(对-亚苯基硫烷基)苯胺(2),4,4'-硫代双[2,” 6”-二甲基-4''-(p -亚苯基硫基)苯胺(5)和芳族二酐4,4'-[对-硫代双(亚苯基硫基)]二邻苯二甲酸酐(6)是通过两步缩聚反应制备的。所有PI均显示出良好的热性能,例如497-500°C范围内10%的失重温度和196°C以上的玻璃化转变温度。此外,PI表现出良好的光学性能,例如在450 nm处的光学透明度超过75%,膜厚度为10μm,折射率在1.7135至1.7301之间,并且在双折射之间的面内/面外双折射较小0.0066和0.0076。©2009 Wiley Periodicals,Inc. J Polym Sci A部分:Polym Chem 48:656–662,2010年