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首页> 外文期刊>Journal of Applied Polymer Science >New polyimide-silica organic-inorganic hybrids
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New polyimide-silica organic-inorganic hybrids

机译：新型聚酰亚胺-二氧化硅有机-无机杂化物

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摘要

A series of polyimide-silica hybrid films with silica contents up to 30 wt % were successfully prepared by the sol-gel reaction of tetraethoxysiliane in the presence of poly(amic acid) containing pendent hydroxyl groups. The films were yellow and transparent when the silica content was less than 11 wt %. The chemical structure of the films was characterized by Fourier transform infrared spectroscopy, and the morphology of the films was investigated by scanning electronic microscopy and atomic force microscopy. Thermogravimetric analysis, differential scanning calorimetry, and stress-strain tests were used to measure the performance of the films. The results indicate that the glass-transition temperatures and decomposition temperatures of the hybrid films increased with increasing silica content, whereas the tensile strength had a maximum with the variety of silica contents. (C) 2003 Wiley Periodicals, Inc. [References: 5]
机译：通过在含有侧链羟基的聚（酰胺酸）存在下四乙氧基硅s烯的溶胶-凝胶反应成功地制备了一系列二氧化硅含量高达30 wt％的聚酰亚胺-二氧化硅杂化膜。当二氧化硅含量小于11wt％时，膜为黄色透明的。通过傅里叶变换红外光谱对薄膜的化学结构进行表征，并通过扫描电子显微镜和原子力显微镜研究了薄膜的形貌。使用热重分析，差示扫描量热法和应力应变测试来测量薄膜的性能。结果表明，杂化膜的玻璃化转变温度和分解温度随二氧化硅含量的增加而增加，而拉伸强度随二氧化硅含量的变化而增大。 （C）2003 Wiley Periodicals，Inc. [参考：5]

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