【摘要】 将原位成纤（INF）和化学注塑发泡（CFIM）技术结合，研究了相容剂对聚丙烯/聚酰胺6(PP/PA6）复合材料微纤形貌、黏弹性、力学性能和CFIM行为的影响。结果表明，PP‐g‐MAH相容剂的加入显著减小了PA6分散相尺寸，得到平均直径约265 nm的PA6微纤均匀分布于PP基体中，微纤网络结构的存在和相界面的协同增强效应显著提高了INF复合材料力学强度，拉伸强度相比纯PP提升26.2%，冲击强度相比纯PP提升62%；基于自制的吸‐放热平衡化学发泡剂的CFIM实验，制备出泡孔尺寸62μm、泡孔密度近5×10~5个/cm3的INF复合泡沫制品，实现了12%样品减重的同时，相比纯PP泡沫，比拉伸强度提高了17%，比冲击强度提高了46%。更多还原

【Abstract】 The effect of compatibilizer on the nanofibril morphology,viscoelasticity,mechanical properties,and CFIM behavior of polypropylene (PP）/nylon6 (PA6) composite through a combination of in‐situ fibrillation (INF) and chemi‐cal foam injection molding (CFIM) technologies.The results indicated that the addition of PP‐g‐MAH compatibilizer re‐duced the size of PA6 dispersion phase significantly,and PA6 microfibers were uniformly distributed in the PP matrix with an average diameter of about 265nm.The existence of a microfiber network structure and the synergistic enhance‐ment effect of phase interface improved the mechanical strength of INF composites significantly.The tensile strength and impact strength of the composites are 26.2%and 62%higher than those of pure PP,respectively.Based on the CFIM experiment using the self‐made endothermic‐exothermic equilibrium chemical foaming agent,the INF composite foam product was prepared with a cell size of 62μm and a cell density of nearly 5×10~5 cells/cm~3.The as‐prepared sample ob‐tained a decrease in the weight by 12%.Compared to pure PP foam,the composite foam exhibited an increase in the specific tensile strength and impact strength by 17%and 46%,respectively.更多还原