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Comparison of rheological, mechanical, electrical properties of HDPE filled with BaTiO3 with different polar surface tension

机译：不同极性表面张力的BaTiO3填充HDPE的流变，机械，电性能比较

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摘要

In this work, three types of coupling agents: isopropyl trioleic titanate (NDZ105), vinyltriethoxysilane (SG-Si151), 3-aminopropyltriethoxysilane (KH550) were applied to modify the surface tension of Barium titanate (BaTiO3) particles. The Fourier transform infrared (FT-IR) spectra confirm the chemical adherence of coupling agents to the particle surface. The long hydrocarbon chains in NDZ105 can cover the particle surface and reduce the polar surface tension of BaTiO3 from 37.53 mJ/m(2) to 7.51 mJ/m(2), turning it from hydrophilic to oleophilic properties. The short and non-polar vinyl groups in SG-Si151 does not influence the surface tension of BaTiO3, but make BaTiO3 have both hydrophilic and oleophilic properties. The polar amino in KH550 can keep BaTiO3 still with hydrophilic properties. It is found that SG-Si151 modified BaTiO3 has the lowest interaction with HDPE matrix, lowering the storage modulus of HDPE composites to the greatest extent. As for mechanical properties, the polar amino groups in KH550 on BaTiO3 surface can improve the adhesion of BaTiO3 with HDPE matrix, which increases the elongation at break of HDPE composites to the greatest extent. In terms of electrical properties, the polar amino groups on surface of BaTiO3 can boost the dielectric properties of HDPE/BaTiO3 composites and decrease the volume resistivity of HDPE/BaTiO3 composites. The aim of this study is to investigate how functional groups affect the rheological, mechanical and electrical properties of HDPE composites and to select a coupling agent to produce HDPE/BaTiO3 composites with low dielectric loss, high dielectric constant and elongation at break. (C) 2015 Elsevier B.V. All rights reserved.
机译：在这项工作中，使用三种类型的偶联剂：异丙基三油酸钛酸酯（NDZ105），乙烯基三乙氧基硅烷（SG-Si151），3-氨基丙基三乙氧基硅烷（KH550）来改变钛酸钡（BaTiO3）颗粒的表面张力。傅立叶红外光谱（FT-IR）证实了偶联剂对颗粒表面的化学粘附。 NDZ105中的长烃链可以覆盖颗粒表面，并将BaTiO3的极性表面张力从37.53 mJ / m（2）降低到7.51 mJ / m（2），从而使其从亲水性变为亲油性。 SG-Si151中的短极性和非极性乙烯基不会影响BaTiO3的表面张力，但会使BaTiO3具有亲水性和亲油性。 KH550中的极性氨基可以使BaTiO3保持亲水性。发现SG-Si151改性的BaTiO3与HDPE基体的相互作用最低，最大程度地降低了HDPE复合材料的储能模量。在机械性能方面，BaTiO3表面KH550中的极性氨基可以改善BaTiO3与HDPE基体的附着力，从而最大程度地提高HDPE复合材料的断裂伸长率。在电学性能方面，BaTiO3表面的极性氨基可以增强HDPE / BaTiO3复合材料的介电性能，并降低HDPE / BaTiO3复合材料的体积电阻率。这项研究的目的是研究官能团如何影响HDPE复合材料的流变，机械和电气性能，并选择一种偶联剂来生产具有低介电损耗，高介电常数和断裂伸长率的HDPE / BaTiO3复合材料。 （C）2015 Elsevier B.V.保留所有权利。

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