摘要
以聚丙烯(PP)为基体,γ-(甲基丙烯酰氧)丙基三甲氧基硅烷(KH570)为接枝单体,过氧化二异丙苯为引发剂,通过熔融接枝法制备了硅烷接枝PP(PP-g-Si)大分子相容剂,采用傅里叶变换红外光谱(FTIR)仪对PP-g-Si进行了表征,并从定性及定量分析两方面讨论了KH570在PP上的接枝效果,研究了挤出温度和螺杆转速对PP-g-Si接枝率的影响。结果表明,KH570以侧链的形式成功接枝到PP分子链上;挤出温度和螺杆转速对PP-g-Si接枝率的影响较为复杂,总体上高螺杆转速下PP-g-Si的接枝率较高,当螺杆转速为140 r/min时,挤出温度为170℃的接枝率最高,而其它螺杆转速下,挤出温度为180℃的接枝率最高;PP-g-Si的最优制备工艺条件为挤出温度180℃、螺杆转速120 r/min或挤出温度170℃、螺杆转速140 r/min。
Using polypropylene(PP)as matrix,γ-(methacryloyloxy)propyltrimethoxysilane(KH570)as grafting monomer and dicumyl peroxide as initiator,the silane grafted PP(PP-g-Si)macromolecular compatibilizer was prepared by melt grafting.The grafted product PP-g-Si was characterized by Fourier transform infrared spectroscopy(FTIR),the grafting effects of KH570 were discussed with qualitatively and quantitatively analysis,and the grafting rate of PP-g-Si was studied by controlling the screw rotating speed and extrusion temperature.The results show that KH570 is successfully grafted onto PP molecular chain in the form of side chains.The influences of extrusion temperature and screw speed on the grafting rate of PP-g-Si are complicated.In general,the high grafting rate of PP-g-Si can be reached under high screw speed,the highest grafting rate is obtained under extrusion temperature of 170℃when the screw rotating speed is 140 r/min,while at other screw rotating speed,the highest grafting rate is obtained when the extrusion temperature is 180℃.The optimal preparation conditions of PP-g-Si show that extrusion temperature is 180℃,screw rotating speed is 120 r/min,or extrusion temperature is 170℃and screw rotating speed is 140 r/min.
作者
吴明明
孙占英
赵雄燕
Wu Mingming;Sun Zhanying;Zhao Xiongyan(College of Material Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2018年第4期48-51,57,共5页
Engineering Plastics Application
基金
河北省自然科学基金项目(E2016208083)
航空轻质复合材料工程实验室(河北科技大学)开放课题项目
