摘要
选用偶联剂KH550改性的玄武岩纤维(BF)和碳酸钙(CaCO_(3)),采用熔融共混法制备聚丙烯/玄武岩纤维/碳酸钙(PP/BF/CaCO_(3))复合材料,探究不同含量的改性BF和CaCO_(3)对复合材料力学性能、光学性能和耐热性的影响。结果表明:改性BF的掺入有效改善PP/BF复合材料的力学性能、光学性能及耐热性。BF的含量为20%时,PP/BF复合材料力学性能和光学性能达到最佳。CaCO_(3)的含量为15%时,PP/BF/CaCO_(3)复合材料的力学性能达到最佳,拉伸强度为55.34 MPa,弯曲强度为58.67 MPa,有缺口和无缺口抗冲击强度分别为9.30 kJ/m2和35.12 kJ/m2,极限氧指数(LOI)为27.8%,热变形温度为115.21℃。随着CaCO_(3)含量的增加,PP/BF/CaCO_(3)复合材料的介电常数、直流和交流击穿强度先上升后降低,CaCO_(3)的含量为15%时样品性能达到最高。
Basalt fiber(BF)and calcium carbonate(CaCO_(3))modified by coupling agent KH550 were selected to prepare polypropylene/basalt fiber/calcium carbonate(PP/BF/CaCO_(3))composites by melt blending method.The effects of different content of modified BF and CaCO_(3)on the mechanical properties,optical properties and heat resistance of the composites were investigated.The results show that the addition of modified BF effectively improves the mechanical properties,optical properties and heat resistance of PP/BF composites.When the content of BF is 20%,the mechanical properties and optical properties of PP/BF composite is the best.When the content of CaCO_(3)is 15%,the mechanical properties of PP/BF/CaCO_(3)composite is the best,the tensile strength is 55.34 MPa,the flexural strength is 58.67 MPa,the notched and unnotched impact strength is 9.30 kJ/m2 and 35.12 kJ/m2,respectively.The limiting oxygen index(LOI)is 27.8%,and the thermal deformation temperature is 115.21℃.With the increase of CaCO_(3)content,the dielectric constant,DC and AC breakdown strength of PP/BF/CaCO_(3)composites increase first and then decrease.The properties of the samples reaches the highest when the content of CaCO_(3)is 15%.
作者
庞龙凤
张朝山
董虹星
PANG Long-feng;ZHANG Chao-shan;DONG Hong-xing(School of Automotive Engineering,Hangzhou Polytechnic,Hangzhou 311402,China)
出处
《塑料科技》
CAS
北大核心
2023年第5期57-61,共5页
Plastics Science and Technology
基金
浙江省教育厅一般科研项目(Y202145962)。
关键词
汽车仪表板
改性聚丙烯
玄武岩纤维
力学性能
光学性能
Automobile dashboard
Modified polypropylene
Basalt fiber
Mechanical properties
Optical properties
