摘要
以(3-氨丙基)三乙氧基硅烷(KH550)处理氮化硼/氧化铝(BN/Al2O3)导热粉体,在导热粉体表面引入氨基;通过熔融共混制备聚丙烯接枝马来酸酐(PP-g-MAH)增容的聚丙烯(PP)/BN/Al2O3导热绝缘复合材料。研究PP-g-MAH和导热填料的用量以及加工条件(转速、温度)对复合材料性能的影响。结果表明,在主机转速为300 r/min、PP-g-MAH为4g、导热填料的用量为50%时,复合材料的导热系数达到了0.7 W/(m·K),拉伸强度为17.65 MPa;添加相容剂后,复合材料和导热填料之间的相容性得到改善。
Boron nitride(BN)/aluminium oxide(Al2O3)/polypropylene(PP)heat conducting and insulating composite was prepared by melt blending using(3-aminopropyl)triethoxysilane(KH550)treated BN/Al2O3 which had amino group on the surface.The effects of PP-g-MAH contents and processing conditions(speed,temperature)on the properties of the composite were investigated.When the main engine speed is 300 r/min,the compatibilizer PP-g-MAH is 4 g,and the filler content is 50%,the thermal conductivity of the composite is 0.7 W/(m·K),and the tensile strength is 17.65 MPa.SEM results show that the compatibility between the composite and the thermal conductive filler is improved with the addition of compatibilizer.
作者
吴健
郑炜琼
周正发
徐卫兵
任凤梅
马海红
WU Jian;ZHENG Wei-qiong;ZHOU Zheng-fa;XU Wei-bing;REN Feng-mei;MA Hai-hong(School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2020年第4期130-133,118,共5页
China Plastics Industry
基金
安徽省科技重大专项(17030901076)。
关键词
绝缘导热
氮化硼
氧化铝
相容剂
聚丙烯
复合材料
Insulation and Heat Conduction
Boron Nitride
Aluminium Oxide
Compatibilizer
Polypropylene
Composite
