Tensile Strength of Poly-p- Phenylene Benzobisoxazole (PBO) Fiber with Kinking Damage
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چکیده
منابع مشابه
Synthesis and Properties of Poly[p-(2,5-dihydroxy)-phenylenebenzobisoxazole] Fiber
The novel polymer poly[p-(2,5-dihydroxy)-phenylenebenzobisoxazole] (PBOH) fiber was synthesized in the presence of 2,5-dihydroxyterephthalicacid (DHTA) and 4,6-diamino-1,3-benzenediol in poly(phosphoric acid) (PPA) using typical polycondensation conditions. The crystalline solutions of liquid PBOH in PPA were spun into fibers using dry-jet wet spinning. Furthermore, the thermostability and mech...
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The polymer matrix with introduced carbon-based nanofiber displays fascinating properties. They have inspired extensive research on the synthesis of polymer composites, which have been applied in catalysis, electronics, and energy storage. In this report, we reported a facile and efficient method to prepare poly(p-phenylene benzobisoxazole) (PBO)/nanographene (PNG) composites fibers via in-situ...
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We report on time resolved photoluminescence (PLRT) measurements in poly(p-phenylene vinylene) (PPV) films irradiated by laser in the presence of air. We observe a PL intensity enhancement and a biexponential decay dynamics of PL signal for all irradiated films. These results can be understood in terms of a chain shortening process due to carbonyl incorporation and formation of an energy profil...
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1 緒 言 PBO(ポリパラフェニレンベンゾビスオキサゾ-ル) 繊維は,繊維強化複合材料の有機系強化繊維の一つであ り,炭素繊維に匹敵する強度・弾性率を有し,有機繊維 中最高の耐熱性・難燃性を示す事から,FRPの次世代の 強化繊維としての用途展開が期待されている.1), 2) しかしながら,PBO繊維は,繊維/樹脂間の界面強度 が不十分であり,この界面強度は FRPの様々な力学的特 性に大きく影響するため,3)PBO繊維の FRPの強化繊維と しての優れた特性を最大限に活かすためには,界面強度 向上を目的とした繊維表面改質法の研究が不可欠となっ てくる. 現在,繊維/樹脂間の界面強度の向上を目的として, 様々な表面改質法が試みられている.中でも低温プラズ マ処理は,ドライプロセスで低公害であり,繊維自身の 物性を損なうことなく,親水性の官能基を表面に効率的 に付与できるといった利点を...
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Electroluminescent conjugated polymers such as poly-(p-phenylene vinylene) (PPV) are at the brink of being extensively used commercially as light emitting devices. A continuous flow of both theoretical and experimental studies elucidate many still unresolved issues of polymer photophysics. Among the processes under debate are the different energy transfer pathways. This work studies one such pa...
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ژورنال
عنوان ژورنال: Procedia Structural Integrity
سال: 2016
ISSN: 2452-3216
DOI: 10.1016/j.prostr.2016.06.038