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首页> 外文期刊>Polymers for advanced technologies >Hugely enhanced flame retardancy and smoke suppression properties of UHMWPE composites with silicone‐coated expandable graphite
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Hugely enhanced flame retardancy and smoke suppression properties of UHMWPE composites with silicone‐coated expandable graphite

机译：具有硅胶涂层可膨胀石墨的UHMWPE复合材料的巨大增强的阻燃性和烟雾抑制性能

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>In this paper, silicone‐coated intumescent flame retardants was prepared by an efficient and simple approach, aiming at enhancing the flame‐retardant efficiency and smoke suppression properties. The surface of expandable graphite (EG) was treated prior to the coverage of nonflammable silicone. The resultant silicone‐modified EG hybrid (SEG) was combined with ammonium polyphosphate (APP) and applied as a flame‐retardant and smoke‐suppressant for ultrahigh molecular weight polyethylene (UHMWPE). Compared with UHMWPE/APP/EG (with 15?wt% APP/EG), UHMWPE/APP/SEG (with 15?wt% APP/SEG) gives decrement by 18.5% in the peaks of the heat release rate, 6.33% in total heat release and 13.6% in total smoke release, whereas increment by 23% in tensile strength and 12.1% in elongation at break, respectively. It is suggested that the introduction of silicone on the surface of EG can improve the interfacial compatibility between EG and UHMWPE. Moreover, it can lead to forming more char residue and reducing the release of smoke particulates during combustion process of the composites.
机译： 在本文中，通过高效且简单的方法制备了硅氧烷涂覆的膨胀膨胀性阻燃剂，旨在提高阻燃效率和烟雾抑制性能。在不易燃硅氧烷的覆盖之前处理可膨胀石墨（例如）的表面。将得到的硅氧烷改性的例如杂化（SEG）与多磷酸铵（APP）组合，并用作超高分子量聚乙烯（UHMWPE）的阻燃和烟雾抑制剂。与UHMWPE / APP / EG（15？WT％APP / EG）相比，UHMWPE / APP / SEG（带15？WT％APP / SEG）在热释放率的峰值下减少18.5％，6.33％总热量释放和总烟雾释放的13.6％，而抗拉强度的增量分别为23％，分别伸长率为12.1％。建议在表面的表面上引入硅胶可以改善例如uhmWpe之间的界面相容性。此外，它可以导致在复合材料的燃烧过程中形成更多的炭残渣并减少烟雾颗粒的释放。

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