This paper experimentally studies the tensile deformation behavior of poly- carbonate (PC), acrylonitrile-butadiene-styrene (ABS), and PC/ABS blends (with the blending ratios of PC to ABS being 80:20, 60:40, 50...This paper experimentally studies the tensile deformation behavior of poly- carbonate (PC), acrylonitrile-butadiene-styrene (ABS), and PC/ABS blends (with the blending ratios of PC to ABS being 80:20, 60:40, 50:50, and 40:60) from low to high strain rates. Using the universal MTS-810 machine and the split Hopkinson tension bar (SHTB) testing system, the quasi-static and impact tension tests are carried out at the room temperature. The curves of the true stress and the true strain are obtained. The deformation behaviors of PC, ABS, and PC/ABS blends are characterized in detail. The linear relationship between the strain rate and the yielding stress is given.展开更多
通过熔体流动速率、热变形温度和力学性能等指标变化评价了ASA胶含量及用量对PC/ASA合金性能的影响。结果表明,随着ASA用量的增加,合金的热变形温度下降;可以通过ASA胶含量和用量调节合金的流动性;不论合金的组成,ASA胶含量为30%的PC/AS...通过熔体流动速率、热变形温度和力学性能等指标变化评价了ASA胶含量及用量对PC/ASA合金性能的影响。结果表明,随着ASA用量的增加,合金的热变形温度下降;可以通过ASA胶含量和用量调节合金的流动性;不论合金的组成,ASA胶含量为30%的PC/ASA合金的低温冲击强度最高;当PC/ASA比例为7∶3,ASA胶含量为30%时,PC/ASA合金的低温冲击强度最高为36 k J/m^(2)。展开更多
综述和讨论了芳香族磷酸酯阻燃聚碳酸酯(PC)/丙烯腈-丁二烯-苯乙烯共聚物、硅化合物和硫化合物阻燃 PC 的阻燃机理以及 PC 的热分解机理。涉及的反应有碳酸酯基的重排、羟基化合物与 PC 的作用、Fries 重排、异亚丙基键的断裂及 PC 的...综述和讨论了芳香族磷酸酯阻燃聚碳酸酯(PC)/丙烯腈-丁二烯-苯乙烯共聚物、硅化合物和硫化合物阻燃 PC 的阻燃机理以及 PC 的热分解机理。涉及的反应有碳酸酯基的重排、羟基化合物与 PC 的作用、Fries 重排、异亚丙基键的断裂及 PC 的热氧化等。今后的研究重点之一是应取得更多证据支持已提出的机理,使其日趋完善。展开更多
基金supported by the National Natural Science Foundation of China (No. 11142004)the Shang-hai Leading Academic Discipline Project (No. S30106)the Innovative Foundation of Shanghai University
文摘This paper experimentally studies the tensile deformation behavior of poly- carbonate (PC), acrylonitrile-butadiene-styrene (ABS), and PC/ABS blends (with the blending ratios of PC to ABS being 80:20, 60:40, 50:50, and 40:60) from low to high strain rates. Using the universal MTS-810 machine and the split Hopkinson tension bar (SHTB) testing system, the quasi-static and impact tension tests are carried out at the room temperature. The curves of the true stress and the true strain are obtained. The deformation behaviors of PC, ABS, and PC/ABS blends are characterized in detail. The linear relationship between the strain rate and the yielding stress is given.
文摘通过熔体流动速率、热变形温度和力学性能等指标变化评价了ASA胶含量及用量对PC/ASA合金性能的影响。结果表明,随着ASA用量的增加,合金的热变形温度下降;可以通过ASA胶含量和用量调节合金的流动性;不论合金的组成,ASA胶含量为30%的PC/ASA合金的低温冲击强度最高;当PC/ASA比例为7∶3,ASA胶含量为30%时,PC/ASA合金的低温冲击强度最高为36 k J/m^(2)。
文摘综述和讨论了芳香族磷酸酯阻燃聚碳酸酯(PC)/丙烯腈-丁二烯-苯乙烯共聚物、硅化合物和硫化合物阻燃 PC 的阻燃机理以及 PC 的热分解机理。涉及的反应有碳酸酯基的重排、羟基化合物与 PC 的作用、Fries 重排、异亚丙基键的断裂及 PC 的热氧化等。今后的研究重点之一是应取得更多证据支持已提出的机理,使其日趋完善。