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首页> 外文期刊>Journal of Applied Polymer Science >High loading boron nitride chemically bonded with silicone rubber to enhance thermal neutron shielding and flexibility of polymer nanocomposites
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High loading boron nitride chemically bonded with silicone rubber to enhance thermal neutron shielding and flexibility of polymer nanocomposites

机译：用硅橡胶化学键合高装载硼氮化物，以增强聚合物纳米复合材料的热中子屏蔽和柔韧性

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摘要

Flexible materials with excellent radiation shielding and flexibility are essential to the personal protective equipments (PPEs) for protecting workers from nuclear radiations. However, it is an enormous challenge to obtain the desired materials since high loading filler in polymer nanocomposites usually promotes radiation shielding while restrains its flexibility. Here, a facile "thiol-ene click" means is applied to chemically bond high loading boron nitride (BN) nanoparticles with silicone rubber (SR) in SR/BN nanocomposites for thermal neutron shielding. Uniform dispersion of BN nanoparticles and good compatibility of interfaces in the nanocomposites with high loading filler lead to increased flexibility instead of decrease. In particular, the nanocomposite with 40 wt% BN displays 911% of elongation at break that is about 50% enhancement to that of neat SR. Furthermore, higher loading BN in the nanocomposites means better thermal neutron shielding. Namely, enhanced thermal neutron shielding and flexibility is achieved at SR/BN nanocomposite with 40 wt% BN. The present work provides a facile strategy towards superior integrated performance of flexible materials for radiation shielding, such as wearable devices.
机译：具有良好辐射屏蔽和柔韧性的柔性材料对于保护工人免受核辐射的个人防护设备（PPE）至关重要。然而，由于聚合物纳米复合材料中的高负载填料通常会促进辐射屏蔽，同时限制其灵活性，因此获得所需的材料是一个巨大的挑战。在这里，一种简单的“硫醇-烯点击”方法被应用于在用于热中子屏蔽的SR/BN纳米复合材料中化学键合高负载氮化硼（BN）纳米颗粒与硅橡胶（SR）。BN纳米颗粒的均匀分散和高负载填料纳米复合材料中界面的良好相容性使柔性增加而不是降低。特别是，BN含量为40 wt%的纳米复合材料的断裂伸长率为911%，比纯锶的断裂伸长率提高了约50%。此外，纳米复合材料中BN含量较高意味着更好的热中子屏蔽。也就是说，在含有40 wt%BN的SR/BN纳米复合材料上实现了增强的热中子屏蔽和灵活性。目前的工作为实现可穿戴设备等辐射屏蔽柔性材料的优异综合性能提供了一种简便的策略。

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  • 来源
    《Journal of Applied Polymer Science》 |2021年第32期|共9页
  • 作者

    Li Jia-Le; Zhang Quan-Ping; Liu Xue; Chen Rui-Chao; Xu Wei-Di; Sun Nan; Li Yin-Tao; Yang Wen-Bin; Xu Dui-Gong; Zhou Yuan-Lin;

  • 作者单位

    Southwest Univ Sci &

    Technol State Key Lab Environm Friendly Energy Mat Mianyang 621010 Sichuan Peoples R China;

    Southwest Univ Sci &

    Technol State Key Lab Environm Friendly Energy Mat Mianyang 621010 Sichuan Peoples R China;

    Southwest Univ Sci &

    Technol State Key Lab Environm Friendly Energy Mat Mianyang 621010 Sichuan Peoples R China;

    Southwest Univ Sci &

    Technol State Key Lab Environm Friendly Energy Mat Mianyang 621010 Sichuan Peoples R China;

    Southwest Univ Sci &

    Technol State Key Lab Environm Friendly Energy Mat Mianyang 621010 Sichuan Peoples R China;

    Southwest Univ Sci &

    Technol State Key Lab Environm Friendly Energy Mat Mianyang 621010 Sichuan Peoples R China;

    Southwest Univ Sci &

    Technol State Key Lab Environm Friendly Energy Mat Mianyang 621010 Sichuan Peoples R China;

    Southwest Univ Sci &

    Technol State Key Lab Environm Friendly Energy Mat Mianyang 621010 Sichuan Peoples R China;

    China Acad Engn Phys Inst Mat Jiangyou Peoples R China;

    Southwest Univ Sci &

    Technol State Key Lab Environm Friendly Energy Mat Mianyang 621010 Sichuan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;
  • 关键词

    composites; mechanical properties; surfaces and interfaces;

    机译：复合材料;机械性能;表面和界面;

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