摘要
玄武岩纤维(BF)表面光滑且呈现化学惰性,在增强聚合物性能方面面临挑战。为改善BF与聚丙烯(PP)基体间的界面结合,提升BF增强PP的效能,采用电子束辐照和纳米二氧化硅(nano-SiO2)耦合改性BF表面。结果表明:在辐照过程中,BF表面羟基增多,BF对nano-SiO2的结合能力得到提升,BF表面形成更多PP结晶位点,使PP基体的结晶度从36.66%增至48.30%。在辐照过程中,BF表面更粗糙,BF与PP分子链的界面摩擦力得到提升。辐照剂量为400 kGy时,改性BF/PP的拉伸强度相比纯PP和未改性BF/PP分别提升29.2%和20.3%。辐照剂量为200 kGy时,改性BF/PP的热分解温度相比纯PP和未改性BF/PP分别提升6.4℃和2.2℃。
Basalt fiber(BF)faces challenges in enhancing polymer properties due to its smooth surface and chemical inertness.In order to improve the interfacial bonding between BF and polypropylene(PP)matrix and enhance the effect of BF on PP,the surface of BF was modified by electron beam irradiation and nano-silica(nano-SiO2).The results show that during the irradiation process,the hydroxyl groups on the surface of BF increases,the binding ability of BF to nano-SiO2 is improved,and more PP crystallization sites are formed on the surface of BF,which increase the crystallinity of PP matrix from 36.66%to 48.30%.During the irradiation process,the surface of BF is rougher,and the interfacial friction between BF and PP molecular chains is improved.When irradiation dose is 400 kGy,the tensile strength of modified BF/PP is 29.2% and 20.3%higher than that of pure PP and unmodified BF/PP,respectively.When the irradiation dose is 200 kGy,the thermal decomposition temperature of modified BF/PP is 6.4℃ and 2.2℃ higher than that of pure PP and unmodified BF/PP,respectively.
作者
佘佐仙
贺攀
陈炬
李光照
陈刚
韩锐
SHE Zuo-xian;HE Pan;CHEN Ju;LI Guang-zhao;CHEN Gang;HAN Rui(School of Materials Science and Engineering,Xihua University,Chengdu 610039,China;Chengdu Textile College,Chengdu 611731,China;Shenzhen Pangu New Material Co.,Ltd.,Shenzhen 516473,China)
出处
《塑料科技》
CAS
北大核心
2023年第8期5-9,共5页
Plastics Science and Technology
基金
国家自然科学基金项目(51703182)
成都市重点研发支撑计划(2022-YF09-00020-SN)
四川省科技计划项目(2022ZHCG0089)。
关键词
电子束辐照
纳米二氧化硅
玄武岩纤维
聚丙烯
晶体结构
热稳定性
Electron beam irradiation
Nano-SiO2
Basalt fiber
Polypropylene
Crystal structure
Thermal stability
