Effect of Barium Sulfate Nanoparticles on Mechanical Properties and Crystallization Behaviour of HDPE
文献类型： 外文期刊
第一作者： Chen, Xiaolei
作者： Chen, Xiaolei;Wang, Luming;Shi, Jiangao;Shi, Hang;Liu, Yongli
作者机构：
期刊名称：POLYMERS & POLYMER COMPOSITES （ 影响因子：2.0； 五年影响因子：1.48 ）
ISSN： 0967-3911
年卷期： 2010 年 18 卷 3 期
页码：
收录情况： SCI
摘要： High density polyethylene (HDPE)-based composites were prepared by blending HDPE with BaSQ(4) nartoparticles, which had been treated with sodium stearate. Variations in crystallization behaviour, mechanical properties, storage modulus and damping parameter (tan 6) with the addition of BaSO(4) nanoparticles were investigated by SEM, XRD, DSC, DMA, etc. The crystallization rate steadily increased with the content of BaSO(4) nanoparticles because of these nanoparticles acting as a heterogeneous nucleation agent. The impact strength of HDPE first increased and then decreased with increasing the content of BaSO(4) nanoparticles. The maximum impact strength of HDPE nanocomposites was achieved at a weight ratio of BaSO(4)/HDPE = 1/100. However, the tensile yield stress gradually increased with the content of BaSO(4) nanoparticles. Dynamic mechanical analysis data showed an increase in the storage modulus of composites with increasing content of BaSO(4) nanoparticles. The tan 8 value of nanocomposites decreased in comparison to the neat HDPE. It was demonstrated that the BaSO(4) nanoparticles treated with sodium stearate had stronger effective interface interaction with HDPE matrix and adding 1.0 wt.% modified BaSO(4) nanoparticles could effectively reinforce HDPE matrix.
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