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首页> 外文期刊>Journal of Applied Polymer Science >Effects of a Titanate Coupling Agent on the Mechanical and Thermo-Physical Properties of Talc-Reinforced Polyethylene Compounds
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Effects of a Titanate Coupling Agent on the Mechanical and Thermo-Physical Properties of Talc-Reinforced Polyethylene Compounds

机译：钛酸酯偶联剂对滑石增强聚乙烯化合物力学和热物理性质的影响

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摘要

An experimental study was carried out to investigate the effects of a titanate coupling agent on the mechanical properties, moisture absorption, and thermal conductivity of talc-filled high-density polyethylene (HDPE). Talc (0–35 wt %) was used as reinforcement particulate filler in an HDPE matrix and samples were prepared in a micro-compounder and an injection molding machine. Isopropyl tri(dioctyl)phosphate titanate (0.5 wt %) was used as coupling agent. Composites with and without coupling agent were evaluated for changes in mechanical and thermo-physical properties, morphology, and void content. Addition of the titanate coupling agent most often resulted in an increase in stiffness and tensile strength. Furthermore, both the void content and the elongation at break of composites were reduced. Results also showed that the coupling agent had no effects on the thermal conductivity, thermal diffusivity, and specific heat capacity of the composites. In addition, it was observed that the coupling agent was more effective at low concentrations of filler.
机译：进行了一项实验研究，以研究钛酸酯偶联剂对滑石粉填充的高密度聚乙烯（HDPE）的机械性能，吸湿性和导热性的影响。滑石粉（0–35 wt％）用作HDPE基质中的增强颗粒填料，样品在微型粉碎机和注塑机中制备。使用磷酸三（二辛基）酯钛酸酯（0.5重量％）作为偶联剂。评价具有和不具有偶联剂的复合材料的机械和热物理性质，形态和空隙含量的变化。钛酸酯偶联剂的添加最经常导致刚度和拉伸强度的增加。此外，复合材料的空隙率和断裂伸长率均降低。结果还表明，偶联剂对复合材料的导热率，热扩散率和比热容没有影响。另外，观察到偶联剂在低浓度的填料时更有效。

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