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dc.contributor.author王培賢en_US
dc.contributor.authorWang, Peir-Shyanen_US
dc.contributor.author謝宗雍en_US
dc.contributor.authorT.E. Hsiehen_US
dc.date.accessioned2014-12-12T02:17:04Z-
dc.date.available2014-12-12T02:17:04Z-
dc.date.issued1996en_US
dc.identifier.urihttp://140.113.39.130/cdrfb3/record/nctu/#NT850159040en_US
dc.identifier.urihttp://hdl.handle.net/11536/61618-
dc.description.abstract本實驗研究以兩種芳香二酸肝與四種芳香二胺所合成的聚亞醯胺 之結晶性。以X光繞射對所合成的五種聚亞醯胺分析的結果顯示其中兩種 聚亞醯胺經200℃的熱環化處理後具有結晶的現象,且結晶的出現與熱處 理的溫度有關。配合熱差掃描分析(DSC),我們發現在聚亞醯胺具有最低 的玻璃轉移溫度時,結晶出現的趨勢最大,顯然當熱環化處理使聚亞醯胺 的結構具有最大的撓屈性時,分子愈可能堆排成有序的結構;熱環化處理 也須阻止交聯反應的發生否則結晶的現象將消失。熱重分析(TGA)的結果 也顯示所合成的聚亞醯胺均具有約600℃的高熱裂解溫度,因此在高溫應 用方面亦具有相當的潛力。 In this work we studied the crystallinity of polyimides synthesized by two types of aromatic dianhydrides and four types of aromatic diamines. The x-ray diffraction analysis revealed, two of the five different types of synthesized polyimides cured at 200℃ exhibited crystalline behavior. In combination with the differential scanning calorimeter (DSC) analysis, we found the crystallinity seemed to appear in the temperature range when thermal imidization treatment provided polyimides a low glass transition temperature character. This result indicated the ordered packing structure formed when bonding flexibility in polyimides was increased. In addition, the imidization must prevent the occurrence of cross-linking reactions in polyimide otherwise its crystallinity would smear out. All types of polyimides also possessed relatively high thermal decomposition temperatures around 600℃ so that they also have great potential for high-temperature applications, as revealed by thermogravimetric analysis (TGA).zh_TW
dc.language.isozh_TWen_US
dc.subject聚亞醯胺zh_TW
dc.subjectPolyimideen_US
dc.title結晶性聚亞醯胺合成的先期研究zh_TW
dc.titleSynthesis of Crystalline Polyimides: A Peliminary Studyen_US
dc.typeThesisen_US
dc.contributor.department材料科學與工程學系zh_TW
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