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Mechanical and dynamic mechanical properties of waste rubber powder/HDPE composite

机译:废橡胶粉/ HDPE复合材料的力学和动态力学性能

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摘要

Mechanical and dynamic mechanical properties of a waste rubber powder-filled high-density polyethylene (HDPE) composite are investigated. Rubber powder is surface-modified with acrylamide (AAm) using ultraviolet. Rubber powder and HDPE are extruded using a single-screw extruder and maleic anhydride-grafted polypropylene is added as a compatibilizer to improve the adhesion between rubber powder and HDPE. The tensile stress and strain of AAm-grafted rubber powder/compatibilizer/HDPE composites always exhibit higher values than those of unmodified rubber powder/HDPE composites. Surface modification of rubber powder is shown to decrease the magnitude of the tan delta of the HDPE composite. Higher values of the notched Izod impact strength of a surface-modified rubber-filled composite is observed compared to those of unmodified rubber-filled composite. Experimental results show that acryl amide-graft-cd rubber powder reacts with maleic anhydride and it results in improved mechanical properties of the HDPE composite. (C) 2000 John Wiley & Sons, Inc. [References: 14]
机译:研究了废旧橡胶粉填充的高密度聚乙烯(HDPE)复合材料的力学和动态力学性能。橡胶粉使用紫外线在丙烯酰胺(AAm)的作用下进行了表面改性。使用单螺杆挤出机挤出橡胶粉和HDPE,并添加马来酸酐接枝的聚丙烯作为增容剂,以改善橡胶粉与HDPE之间的粘合力。 AAm接枝的橡胶粉/增容剂/ HDPE复合材料的拉伸应力和应变总是比未改性的橡胶粉/ HDPE复合材料的拉伸应力和应变更高。橡胶粉的表面改性显示可以降低HDPE复合材料的正切增量。与未改性的橡胶填充的复合材料相比,观察到表面改性的橡胶填充的复合材料的缺口悬臂梁冲击强度值更高。实验结果表明,丙烯酰胺接枝的cd橡胶粉与马来酸酐发生反应,从而改善了HDPE复合材料的机械性能。 (C)2000 John Wiley&Sons,Inc. [参考:14]

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