纳米SiO2增强HDPE复合材料的力学性能和耐热性能研究OACSTPCD
Study on Mechanical Properties and Heat Resistance Properties of Nano-SiO2 Reinforced HDPE Composites
文章利用硅烷偶联剂(KH-570)改性纳米SiO2(nano-SiO2),将nano-SiO2与高密度聚乙烯(HDPE)混合,制备了HDPE/nano-SiO2复合材料.对HDPE/nano-SiO2复合材料的力学性能和耐热性能进行探究.结果表明:KH-570成功接枝到nano-SiO2表面.随着nano-SiO2掺量的增加,HDPE/nano-SiO2复合材料的拉伸强度、弯曲强度和冲击强度均先升高后降低.当nano-SiO2掺量为3%时,HDPE/3%nano-SiO2复合材料的力学性能和耐热性能达到最优,其拉伸强度、弯曲强度和抗冲击强度,分别达到39.6 MPa、32.5 MPa和16.9 kJ/m2,比纯HDPE分别提高了73.7%、59.3%和36.3%.HDPE/3%nano-SiO2复合材料的初始热分解温度比纯HDPE提高了101℃,质量保留率为6.2%.
The HDPE/nano-SiO2 composites were prepared using silane coupling agent(KH-570)to modify nano-SiO2 and mix nano-SiO2 with high-density polyethylene(HDPE).The mechanical properties and heat resistance of HDPE/nano-SiO2 composites were explored.The results showed that KH-570 was successfully grafted onto the surface of nano-SiO2.With the increase of nano-SiO2 content,the tensile strength,flexural strength and impact strength of HDPE/nano-SiO2 composites first increased and then decreased.When the nano-SiO2 content is 3%,the mechanical properties and heat resistance of HDPE/3%nano-SiO2 composites reach the best,and their tensile strength,bending strength and impact strength reach 39.6 MPa,32.5 MPa and 16.9 kJ/m2,respectively,which are 73.7%,59.3%and 36.3%higher than those of pure HDPE,respectively,and the initial thermal decomposition temperature of HDPE/3%nano-SiO2 composites is increased by 101℃compared with pure HDPE,the quality retention rate of HDPE/3%nano-SiO2 is 6.2%.
赵玉环
海南科技职业大学,海南 海口 570100
纳米SiO2高密度聚乙烯力学性能耐热性能
Nano-SiO2High density polyethyleneMechanical propertiesHeat resistance
《塑料科技》 2024 (002)
40-43 / 4
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