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首页> 外文期刊>Journal of Applied Polymer Science >Mechanical and Thermal Properties of Polycarbonate Composites Reinforced with Potassium Titanate Whiskers
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Mechanical and Thermal Properties of Polycarbonate Composites Reinforced with Potassium Titanate Whiskers

机译：钛酸钾晶须增强聚碳酸酯复合材料的力学和热性能

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摘要

Polycarbonate (PC) composites reinforced with potassium titanate (K_2Ti_6O_13) whiskers were blended in a twin-screw extruder followed by injection molding. The surface of whiskers was treated with tetrabutyl orthotitanate prior to blending. The effects of potassium titanate whisker additions on the tensile, impact, and thermal properties of PC were investigated.Tensile tests showed that the stifiness of composites markedly improved with increasing whisker content. However, potassium titanate whiskers were ineffective to reinforce PC because these whiskers promoted chemical decomposition of PC matrix during compounding. Consequently, the torque values of PC/K_2Ti_6O_13 composites were much lower than that of PC. Moreover, torque measurements revealed that titanate coupling agent also facilitated decomposition of PC during blending. The mechanisms responsible for the degradation of PC matrix of the PC/K_2Ti_6O_13 composites are discussed.
机译：将钛酸钾（K_2Ti_6O_13）晶须增强的聚碳酸酯（PC）复合材料在双螺杆挤出机中混合，然后注塑。在共混之前，须晶的表面用原钛酸四丁酯处理。研究了钛酸钾晶须添加量对PC拉伸，冲击和热性能的影响。拉伸试验表明，随着晶须含量的增加，复合材料的刚度显着提高。然而，钛酸钾晶须不能有效地增强PC，因为这些晶须在混合过程中促进了PC基质的化学分解。因此，PC / K_2Ti_6O_13复合材料的扭矩值远低于PC。此外，扭矩测量表明，钛酸酯偶联剂还促进了共混过程中PC的分解。讨论了导致PC / K_2Ti_6O_13复合材料PC基质降解的机理。

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