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Hybrid XNBR composites with carbon and aluminosilicate nanofillers
Polymer Bulletin ( IF 3.2 ) Pub Date : 2019-05-28 , DOI: 10.1007/s00289-019-02825-9
Sylwia Krzemińska , Ludwika Lipińska , Michał Woluntarski , Mariusz Oleksy , Czesław Ślusarczyk , Włodzimierz Biniaś , Aleksandra Smejda-Krzewicka

The objective of the work was to investigate the possibility of simultaneous application of different types of nanofillers: graphene oxide with carboxylic groups and modified bentonite nanoparticles to carboxylated acrylonitrile–butadiene rubber (XNBR), and to determine the effect on the structural, mechanical and barrier properties of the composites. The composites were designed for use in protective clothing and gloves. Rubber compounds were crosslinked by a hybrid set with simultaneous use of sulphur (1.5 phr) and magnesium oxide (2.5 phr). Graphene oxide and bentonite particles were characterised by BET test method. The XNBR composites with nanofillers were studied in terms of structure (WAXS) and types of chemical bonds (FTIR), barrier properties against chemical substances (mineral oil) and swelling properties, as well as mechanical properties (puncture resistance, tear resistance, cut resistance, abrasion resistance, tensile strength). Simultaneous incorporation into XNBR of two types of nanofillers, bentonite in the amount of 1.0–4.0 phr and graphene oxide with carboxylic groups in the amount of 1.0–2.0 phr, affected positively the mechanical parameters. The most significant improvement was noted for the parameter specifying the puncture resistance, almost threefold improvement from 34 ± 2 N for unfilled XNBR composite to 91 ± 5 N for XNBR composite filled with 2 phr of bentonite (XNBR Bent. 2), or one and a half to 56 ± 5 N for XNBR composite filled with 2 phr of bentonite and 2 phr of graphene oxide (XNBR Bent 2 GO 2). The composites showed equally high resistance to penetration of the selected test chemical—mineral oil. The breakthrough time for XNBR composites without the nanofiller and containing differential amounts of nanofillers was very long and similar to that obtained for the reference sample (480 min).

中文翻译:

具有碳和铝硅酸盐纳米填料的混合 XNBR 复合材料

这项工作的目的是研究同时应用不同类型的纳米填料的可能性:具有羧基的氧化石墨烯和改性膨润土纳米颗粒在羧化丙烯腈-丁二烯橡胶 (XNBR) 中的应用,并确定对结构、机械和阻隔的影响复合材料的特性。该复合材料设计用于防护服和手套。橡胶化合物通过混合组交联,同时使用硫 (1.5 phr) 和氧化镁 (2.5 phr)。氧化石墨烯和膨润土颗粒通过BET测试方法表征。研究了含有纳米填料的 XNBR 复合材料的结构 (WAXS) 和化学键类型 (FTIR)、对化学物质(矿物油)的阻隔性能和溶胀性能,以及机械性能(抗穿刺性、抗撕裂性、抗切割性、耐磨性、拉伸强度)。同时将两种类型的纳米填料(1.0-4.0 phr 的膨润土和 1.0-2.0 phr 的含羧基氧化石墨烯)掺入 XNBR,对机械参数产生积极影响。最显着的改进是指定抗穿刺性的参数,从未填充的 XNBR 复合材料的 34 ± 2 N 提高到填充 2 份膨润土 (XNBR Bent. 2) 的 XNBR 复合材料的 91 ± 5 N,几乎是三倍,或者对于填充有 2 份膨润土和 2 份氧化石墨烯 (XNBR Bent 2 GO 2) 的 XNBR 复合材料,半至 56 ± 5 N。复合材料对选定的测试化学品矿物油的渗透表现出同样高的抵抗力。
更新日期:2019-05-28
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