| 聚碳酸酯在沸水中的老化研究 |
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| 引用本文： | 李超芹,李伟,刘光烨.聚碳酸酯在沸水中的老化研究[J].工程塑料应用,2009,37(1). |
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| 作者姓名： | 李超芹 李伟 刘光烨 |
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| 作者单位： | 青岛科技大学塑料工程技术研究院,青岛,266042 |
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| 摘 要： | 研究了聚碳酸酯(PC)在沸水中的吸水规律和冷热水循环老化对PC结构和性能的影响.结果表明,PC在冷热水循环老化过程中发生了脆韧转变,在48 h内其冲击强度降低了90%.老化后,PC的玻璃化转变温度有所降低,并出现反常比热峰.冷热水循环老化后的PC试样出现了光散射现象,利用光学显微镜观察到该PC试样中存在圆盘状微孔,经热处理后发现该PC试样中出现的缺陷是不可恢复的.
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| 关 键 词： | 聚碳酸酯 沸水老化 脆韧转变 微孔 |
RESEARCH OF POLYCARBONATE AGNG N BOLNG WATER |
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| Li Chaoqin,Li Wei,Liu Guangye.RESEARCH OF POLYCARBONATE AGNG N BOLNG WATER[J].Engineering Plastics Application,2009,37(1). |
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| Authors: | Li Chaoqin Li Wei Liu Guangye |
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| Affiliation: | College of Plastic Engineering;Qingdao University of Science and Technology;Qingdao 266042;China |
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| Abstract: | Water absorbtion behavior of polycarbonate(PC) in boiling water and the effect of commutative process of boiling water and cold water on structure and property of PC were studied.The results showed a brittle-ductile transition occurred when the sample expierenced the aging process.The impact strength of PC decreased 90% in 48 hours.After aging,the glass transiton temperature(Tg) of PC decreased and a abnormal specific heat peak occurred.The phenomenon of light scattering was found by light microscope after ... |
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| Keywords: | polycarbonate aging in boiling water brittle-ductile transition microcracks |
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