Question

英语翻译本文采用熔融共混挤出的方法,以PP/PNBR为原材料,分别以PP-g-MAH为增容剂,HGB作为填充剂制备复合材

Answer 1

In this article it was described how to make a composite material by means of extrusion by melt blending method, with PP / PNBR as the raw material, PP-g-MAH as the compatibilizer, and HGB as the filler. The mechanical properties of the composite materail, such as tensile, bending, impact, were studied. Its impact fracture was observed. By using a differential scanning calorimetry (DSC) the non-isothermal crystallization process of the material was tested as well. The purpose is to study how the PP-g-MAH and HGB affect the mechanical properties and the microstructure of PP / PNBR composite material. With Jeziorny equation and Mo Zhishen method, the non-isothermal crystallization kinetics of the PP / PNBR composite material was studied. With Kissinge equation the activation energy of non-isothermal crystallization process was calculated. With a scanning electron microscopy, the results show that adding PNBR can be improved the mechanical properties of PP composites, the optimum percentage of PNBR is 5 ~ 15%. Adding PP-g-MAH can improve the compatibility between PP and PNBR, so the impact strength and elongation at break of the composite were increased. The poor compatibility of HGB with composite materials resulted in lower figures of the tensile strength, flexural strength and impact strength after adding HGB. With the cooling rate increasing, the crystallization peak temperature Tp, crystallization starting temperature T0 and the crystallinity Xc were getting lower, while the crystallization rate increased. With the crystallization rate constant Zc increases, the semi crystallization time t1/2 reduced. HGB inhibited the crystallization behavior of PP / PNBR and reduced the crystallization rate.