Synthesis and Properties of Low CTE Polybenzoxazoles
碩士 === 國立成功大學 === 材料科學及工程學系 === 102 === Four kinds of low CTE polybenzoxazole precursors, polyhydroxyamides (PHAs), were synthesized by low temperature polymerization of 3,3'-dihydroxybenzidine (DHB), 2,2'-Bis(1,3-amino-4-hydroxyphenyl)hexafluoropropane (BisAPAF) and terephthaloyl chlo...
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ndltd-TW-102NCKU51590392016-03-07T04:10:57Z http://ndltd.ncl.edu.tw/handle/35557095145289452466 Synthesis and Properties of Low CTE Polybenzoxazoles 低熱膨脹係數聚苯噁唑聚合物之合成與性質研究 Cyun-FongLin 林群峰 碩士 國立成功大學 材料科學及工程學系 102 Four kinds of low CTE polybenzoxazole precursors, polyhydroxyamides (PHAs), were synthesized by low temperature polymerization of 3,3'-dihydroxybenzidine (DHB), 2,2'-Bis(1,3-amino-4-hydroxyphenyl)hexafluoropropane (BisAPAF) and terephthaloyl chloride (TC) in NMP. These polymers were characterized by FT-IR, 1H-NMR, XRD, TMA, TGA, UV-Visible and universal testing machine. The inherent viscosities of these precursors were in the range of 0.42–0.89 dL/g. All of these polymers could be solution-cast into flexible and tough films. The cut off wavelength of polyhydroxyamides were in the range of 348–426 nm. After curing, these polybenzoxazoles (PBOs) showed CTE and Tg in the range of 18–41 ppm/℃ and 341–372℃, respectively. The polybenzoxazoles also showed good thermal stability, with 5% weight loss temperature being recorded above 500°C in air or nitrogen atmosphere. The strength of polybenzoxazoles was above 60MPa. The water uptake of these polybenzoxazoles was all below 1%. All polyhydroxyamides and polybenzoxazoles were amorphous. Steve Lien-Chung Hsu 許聯崇 2014 學位論文 ; thesis 71 zh-TW |
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碩士 === 國立成功大學 === 材料科學及工程學系 === 102 === Four kinds of low CTE polybenzoxazole precursors, polyhydroxyamides (PHAs), were synthesized by low temperature polymerization of 3,3'-dihydroxybenzidine (DHB), 2,2'-Bis(1,3-amino-4-hydroxyphenyl)hexafluoropropane (BisAPAF) and terephthaloyl chloride (TC) in NMP. These polymers were characterized by FT-IR, 1H-NMR, XRD, TMA, TGA, UV-Visible and universal testing machine. The inherent viscosities of these precursors were in the range of 0.42–0.89 dL/g. All of these polymers could be solution-cast into flexible and tough films. The cut off wavelength of polyhydroxyamides were in the range of 348–426 nm. After curing, these polybenzoxazoles (PBOs) showed CTE and Tg in the range of 18–41 ppm/℃ and 341–372℃, respectively. The polybenzoxazoles also showed good thermal stability, with 5% weight loss temperature being recorded above 500°C in air or nitrogen atmosphere. The strength of polybenzoxazoles was above 60MPa. The water uptake of these polybenzoxazoles was all below 1%. All polyhydroxyamides and polybenzoxazoles were amorphous.
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Steve Lien-Chung Hsu |
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Steve Lien-Chung Hsu Cyun-FongLin 林群峰 |
author |
Cyun-FongLin 林群峰 |
spellingShingle |
Cyun-FongLin 林群峰 Synthesis and Properties of Low CTE Polybenzoxazoles |
author_sort |
Cyun-FongLin |
title |
Synthesis and Properties of Low CTE Polybenzoxazoles |
title_short |
Synthesis and Properties of Low CTE Polybenzoxazoles |
title_full |
Synthesis and Properties of Low CTE Polybenzoxazoles |
title_fullStr |
Synthesis and Properties of Low CTE Polybenzoxazoles |
title_full_unstemmed |
Synthesis and Properties of Low CTE Polybenzoxazoles |
title_sort |
synthesis and properties of low cte polybenzoxazoles |
publishDate |
2014 |
url |
http://ndltd.ncl.edu.tw/handle/35557095145289452466 |
work_keys_str_mv |
AT cyunfonglin synthesisandpropertiesoflowctepolybenzoxazoles AT línqúnfēng synthesisandpropertiesoflowctepolybenzoxazoles AT cyunfonglin dīrèpéngzhàngxìshùjùběnězuòjùhéwùzhīhéchéngyǔxìngzhìyánjiū AT línqúnfēng dīrèpéngzhàngxìshùjùběnězuòjùhéwùzhīhéchéngyǔxìngzhìyánjiū |
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