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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and properties of cycloolefin copolymer/silica hybrids
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Preparation and properties of cycloolefin copolymer/silica hybrids

机译：环烯烃共聚物/二氧化硅杂化物的制备和性能

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摘要

Polymer substrates are widely used in the flat-panel-display industry because of their flexibility, light weight, and high power efficiency. However, the lower glass-transition temperatures and thermal stability and higher water/oxygen permeation of cycloolefin copolymers (COCs) constrain their applications in display substrates. In this research, COC/tetraethyloxysilane (TEOS) hybrids were synthesized via a sol-gel process. Differential scanning calorimetry indicated that the glass-transition temperature of the hybrids was higher than that of neat COC and rose significantly as the TEOS content was increased from 1 to 15 wt %. According to an analysis of IR spectra, the fraction of hydrogen-bonded carbonyl groups in the hybrids increased as the TEOS content increased. This meant that the interfacial interaction contributed by hydrogen bonds for the COC/TEOS hybrid system increased as the TEOS content increased from 1 to 15 wt %. On the basis of scanning electron microscopy, the number of dispersed droplets of silica increased as the content of TEOS increased. The decomposition temperatures of the hybrids, investigated with thermogravimetric analysis, were not affected significantly by the addition of TEOS. (c) 2007 Wiley Periodicals, Inc.
机译：聚合物基板由于其柔性，重量轻和高功率效率而被广泛用于平板显示器行业。但是，环烯烃共聚物（COC）的较低的玻璃化转变温度和热稳定性以及较高的水/氧渗透性限制了它们在显示基板中的应用。在这项研究中，通过溶胶-凝胶工艺合成了COC /四乙氧基硅烷（TEOS）杂化物。差示扫描量热法表明，杂化物的玻璃化转变温度高于纯COC，并且随着TEOS含量从1wt％增加到15wt％而显着升高。根据红外光谱分析，随着TEOS含量的增加，杂化物中氢键合羰基的比例增加。这意味着当TEOS含量从1 wt％增加到15 wt％时，COC / TEOS杂化系统的氢键贡献的界面相互作用增加。在扫描电子显微镜的基础上，随着TEOS含量的增加，二氧化硅分散液滴的数量增加。用热重分析法研究的杂化体的分解温度不受TEOS的影响。 （c）2007年Wiley Periodicals，Inc.

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