摘要
采用熔融共混法制备了聚丙烯(PP)/环氧树脂(EP)共混物,研究了纳米SiO2对共混物性能的影响。结果表明:与纯PP相比,PP/EP共混物的冲击强度、断裂伸长率及黏度降低,弯曲模量增大;在PP/EP共混物中加入纳米SiO2后,共混物弯曲模量和冲击强度明显提高;将硅烷偶联剂KH550改性的纳米SiO2(SiO2-KH550)添加到共混物中,在EP为17%、SiO2-KH550为7%时,共混物的弯曲模量比纯PP提高了64%;EP降低了PP的结晶温度。
PP/Epoxy blends were prepared by melt-blending process, and the effects of nano-SiO2 on mechanical and crystallization properties of the blends were studied. The results show that the flexural modulus of PP/Epoxy blends increases, the impact strength, elongation at break and viscosity of PP/Epoxy blends decrease compared to pure PP. The introduction of nano-SiO2 increases flexural modulus and impact strength of its blends compared to PP/Epoxy blends. SiO2-KH550 leads to much better effect than unmodified nano-SiO2 in the blends; the flexural modulus of the blend increases by 64% when 17% epoxy and 7% SiO2-KH550 are added. The peak crystallization temperature of PP decreases by addition of Epoxy.
出处
《塑料科技》
CAS
北大核心
2008年第2期70-73,共4页
Plastics Science and Technology
