Through the research on the crystallite of the composites modified with silicone coupling agent and pp - g - mah , research showed that the size of the crystallite and oriented crystallization had obviously influence on the mechanical performances . the sem results showed that nano - sio2 was dispersed well in pp , which promoted the matrix undergo shear yielding rather than brittle fracture 通過對(duì)硅烷偶聯(lián)劑?馬來酸酐接枝聚丙烯共聚物作為界面改性劑改性pp微晶的研究,表明微晶尺寸變化與復(fù)合材料的力學(xué)性能有關(guān);在界面附近形成擇優(yōu)取向的結(jié)晶層,促使基體發(fā)生屈服變形,提高了復(fù)合材料的韌性。