玄武岩纤维增强高密度聚乙烯的力学性能
发布时间：2018-10-12 21:27
【摘要】：玄武岩纤维(BF)未经改性处理和经硅烷偶联剂(KH 550和KH 570)进行处理后,添加到高密度聚乙烯(PE HD)基体树脂中,增强PE HD的力学性能,用傅立叶变换红外光谱和扫描电子显微镜对硅烷偶联剂处理的BF进行表征,同时,用SEM观察BF增强PE HD复合材料的拉伸断面。结果表明,随着未经改性处理BF添加量增加,PE HD复合材料的拉伸强度、弯曲强度逐渐提高,当添加量达到30%时,拉伸强度达到45.5 MPa,提升79.1%;弯曲强度达到41.3 MPa,提升118.9%。经KH 550和KH 570处理的BF添加量达到20%时,PE HD复合材料的拉伸强度均达到45 MPa以上,其后随着BF添加量继续增加,拉伸强度变化不大,而弯曲强度随BF添加量的增加逐渐增大。当BF添加量达到30%时,BF改性与否对PE HD复合材料的力学性能的影响不大。当改性BF添加量为5%~15%时,KH 550改性的PE HD复合材料的力学性能较KH 570改性的高;当改性BF添加量为20%,25%时,KH 570改性的PE HD复合材料的力学性能较KH 550改性的高。
[Abstract]:Basalt fiber (BF) was added to the matrix resin of high density polyethylene (PE) to enhance the mechanical properties of PE HD after unmodified and treated with silane coupling agents (KH C550 and KH 570). The BF treated with silane coupling agent was characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). At the same time, the tensile section of PE / HD composite reinforced by BF was observed by SEM. The results show that the tensile strength and flexural strength of PE / HD composites increase gradually with the increase of the content of unmodified BF. The tensile strength increases 79.1% and the flexural strength reaches 41.3 MPa, and 118.9%, respectively, when the content reaches 300.The tensile strength increases 79.1% and 41.3 MPa, respectively. The tensile strength of PE / HD composites reached more than 45 MPa when the content of BF was 20, and the tensile strength of PE / HD composites increased with the increase of BF content, but the flexural strength increased gradually with the increase of BF content. When the content of BF reaches 30%, the effect of BF modification on the mechanical properties of PE / HD composites is not significant. When the content of modified BF is 5 ~ 15%, the mechanical properties of PE / HD composites modified by KH T550 are higher than those modified by KH / HD, and the mechanical properties of PE / HD composites modified by KH 570 are higher than those modified by KH / BF when the content of modified BF is 20 and 25.
【作者单位】： 四川大学高分子科学与工程学院;
【分类号】：TQ325.12;TB332
[Abstract]:Basalt fiber (BF) was added to the matrix resin of high density polyethylene (PE) to enhance the mechanical properties of PE HD after unmodified and treated with silane coupling agents (KH C550 and KH 570). The BF treated with silane coupling agent was characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). At the same time, the tensile section of PE / HD composite reinforced by BF was observed by SEM. The results show that the tensile strength and flexural strength of PE / HD composites increase gradually with the increase of the content of unmodified BF. The tensile strength increases 79.1% and the flexural strength reaches 41.3 MPa, and 118.9%, respectively, when the content reaches 300.The tensile strength increases 79.1% and 41.3 MPa, respectively. The tensile strength of PE / HD composites reached more than 45 MPa when the content of BF was 20, and the tensile strength of PE / HD composites increased with the increase of BF content, but the flexural strength increased gradually with the increase of BF content. When the content of BF reaches 30%, the effect of BF modification on the mechanical properties of PE / HD composites is not significant. When the content of modified BF is 5 ~ 15%, the mechanical properties of PE / HD composites modified by KH T550 are higher than those modified by KH / HD, and the mechanical properties of PE / HD composites modified by KH 570 are higher than those modified by KH / BF when the content of modified BF is 20 and 25.
【作者单位】： 四川大学高分子科学与工程学院;
【分类号】：TQ325.12;TB332
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