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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of nano-zinc oxide/EPDM composites with both good thermal conductivity and mechanical properties
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Preparation of nano-zinc oxide/EPDM composites with both good thermal conductivity and mechanical properties

机译：具有良好的导热性和机械性能的纳米氧化锌/ EPDM复合材料的制备

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In this article, nano-zinc oxide (ZnO) filled ethylene propylene diene monomer (EPDM) composites are prepared, and the mechanical (static and dynamic) properties and thermal conductivity are investigated respectively, which are further compared with the traditional reinforcing fillers, such as carbon black and nano-silica. Furthermore, influence of in-situ modification (mixing operation assisted by silane at high temperature for a certain time) with the silane-coupling agent Bis-(3-thiethoxy silylpropyl)-tetrasufide (Si69) on the nano-ZnO filled composites is as well investigated. The results indicate that this novel reinforcing filler nano-ZnO can not only perform well in reinforcing EPDM but can also improve the thermal conductivity significantly. In-situ modification with Si69 can enhance the interfacial interaction between nano-ZnO particles and rubber matrix remarkably, and therefore contribute to the better dispersion of filler. As a result, the mechanical properties and the dynamic heat build-up of the nano-ZnO filled composites are improved obviously by in-situ modification, without influencing the thermal conductivity. In comparison with traditioanl reinforcing fillers, in-situ modified nano-ZnO filled composites exhibit the excellent performance in both mechanical (static and dynamic) properties and better thermal conductivity. In general, our work indicates that nano-ZnO, as the novel thermal conductive reinforcing filler, is suitable to prepare elastomer products serving in dynamic conditions, with the longer expected service life.
机译：本文制备了纳米氧化锌（ZnO）填充的乙烯丙烯二烯单体（EPDM）复合材料，并分别研究了其机械（静态和动态）性能和导热系数，并与传统的增强填料进行了比较。作为炭黑和纳米二氧化硅。此外，硅烷偶联剂Bis-（3-thththoxysilylpropylpropyl）-tetrasufide（Si69）与硅烷偶联剂原位改性（在高温下硅烷辅助一定时间的混合操作）对填充纳米ZnO的复合材料的影响如下：经过充分调查。结果表明，这种新型的增强填料纳米ZnO不仅可以很好地增强EPDM，而且可以显着提高导热性。 Si69原位改性可以显着增强纳米ZnO颗粒与橡胶基体之间的界面相互作用，从而有助于填料的更好分散。结果，在不影响导热率的情况下，通过原位改性可以明显改善纳米ZnO填充复合材料的力学性能和动态热累积。与传统的补强填料相比，原位改性纳米ZnO填充复合材料在机械（静态和动态）性能和导热性方面均表现出优异的性能。总的来说，我们的工作表明，纳米ZnO作为新型的导热增强填料，适合于制备在动态条件下具有较高预期使用寿命的弹性体产品。

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