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首页> 外文期刊>Journal of Applied Polymer Science >Boiling water aging of polycarbonate and polycarbonate/acrylonitrile-butadiene-styrene resin and polycarbonate/low-density polyester blends
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Boiling water aging of polycarbonate and polycarbonate/acrylonitrile-butadiene-styrene resin and polycarbonate/low-density polyester blends

机译：聚碳酸酯与聚碳酸酯/丙烯腈-丁二烯-苯乙烯树脂和聚碳酸酯/低密度聚酯混合物的沸腾水老化

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摘要

The effects of boiling water on the mechanical and thermal properties and morphologies of polycarbonate (PC), PC/acrylonitrile-butadiene-styrene resin (PC/ABS), and PC/low-density polyester (PC/LDPE) blends (compositions of PC/ABS and PC/LDPE blends were 80/20) were studied. PC and the PC/ABS blend had a transition from ductile to brittle materials after boiling water aging. The PC/LDPE blend was more resistant to boiling water aging than PC and the PC/ABS blend. The thermal properties of glass-transition temperature (T-g) and melting temperature (T-m) in PC and the blends were measured by DSC. The T-g of PC and PC in the PC/ABS and PC/LDPE blends decreased after aging. The T-g of the ABS component in the PC/ABS blend did not change after aging. The supersaturated water in PC clustered around impurities or air bubbles leading to the formation of microcracks, which was the primary reason for the ductile-brittle transition in PC, and the microcracks could not recover after PC was treated at 160degreesC for 6 h. The PC/ABS blend showed slightly higher resistance to boiling water than did PC. The highest resistance to boiling water of the PC/LDPE blend may be attributed to its special structural morphology. (C) 2003 Wiley Periodicals, Inc. [References: 20]
机译：沸水对聚碳酸酯（PC），PC /丙烯腈-丁二烯-苯乙烯树脂（PC / ABS）和PC /低密度聚酯（PC / LDPE）共混物（PC的组成）的机械和热性能及形貌的影响/ ABS和PC / LDPE共混物的比例为80/20）。沸水老化后，PC和PC / ABS共混物从韧性材料转变为脆性材料。 PC / LDPE共混物比PC和PC / ABS共混物更耐沸水老化。通过DSC测量PC和共混物中的玻璃化转变温度（T-g）和熔融温度（T-m）的热性能。老化后，PC / ABS和PC / LDPE共混物中PC和PC的T-g降低。老化后，PC / ABS共混物中ABS组分的T-g不变。 PC中的过饱和水聚集在杂质或气泡周围，从而导致微裂纹的形成，这是PC中韧性-脆性转变的主要原因，并且PC在160℃下处理6小时后，微裂纹无法恢复。 PC / ABS共混物显示的耐沸水性比PC高。 PC / LDPE共混物对沸水的最高耐受性可能归因于其特殊的结构形态。 （C）2003 Wiley Periodicals，Inc. [参考：20]

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