The random copolymer of chloroprene and acrylonitrile is a newly developed rubber whose features and value propositions are not scientifically explored yet. This article focuses on the basic characterizations and properties of acrylonitrile-chloroprene rubber. Qualitative analyses through infrared (FTIR) and nuclear magnetic resonance (¹H-NMR) spectra confirm the presence of both the -Cl and -CN groups in the new rubber. As evidenced through differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA), the single glass transition temperature of acrylonitrile-chloroprene rubber reflects its monophasic random microstructure. While compared against commercial grades of chloroprene rubber (CR) and nitrile rubber (NBR), the new rubber provides a distinctive combination of properties that are not available with either of the elastomer alone. Acrylonitrile-chloroprene rubber demonstrates slightly lower specific gravity, an improved low-temperature compression set, higher flex-fatigue resistance, and lower volume swelling in IRM 903 and Fuel C to chloroprene rubber. As compared to nitrile rubber, the new copolymer shows appreciably better heat aging and ozone resistance. Good abrasion resistance, low heat buildup, and remarkably high flex-fatigue resistance indicate excellent durability of the acrylonitrile-chloroprene rubber under dynamic loading. Based on the preliminary results, it is apparent that the new copolymer can be a candidate elastomer for various industrial applications which demand good fluid resistance, high heat and low-temperature tolerances, good weatherability, and durability under static and dynamic conditions.

中文翻译：

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具有差异化特性的新型氯丁二烯与丙烯腈共聚物介绍

氯丁二烯和丙烯腈的无规共聚物是一种新开发的橡胶，其特性和价值主张尚未得到科学探索。本文重点介绍丙烯腈-氯丁橡胶的基本特征和性能。通过红外 (FTIR) 和核磁共振进行定性分析 ( ¹H-NMR) 光谱证实新橡胶中同时存在 -Cl 和 -CN 基团。通过差示扫描量热法 (DSC) 和动态机械热分析 (DMTA) 证明，丙烯腈-氯丁橡胶的单一玻璃化转变温度反映了其单相无规微观结构。与商业等级的氯丁橡胶 (CR) 和丁腈橡胶 (NBR) 相比，新橡胶提供了一种独特的性能组合，这是单独使用任何一种弹性体都无法获得的。丙烯腈-氯丁二烯橡胶在 IRM 903 和 Fuel C 对氯丁二烯橡胶中的比重略低，低温压缩形变改善，抗挠曲疲劳性更高，体积溶胀更低。与丁腈橡胶相比，新共聚物显示出明显更好的耐热老化性和耐臭氧性。良好的耐磨性、低生热性和非常高的抗挠曲疲劳性表明丙烯腈-氯丁橡胶在动态载荷下具有出色的耐久性。根据初步结果，新共聚物显然可以成为各种工业应用的候选弹性体，这些应用需要良好的耐流体性、高耐热性和低温耐受性、良好的耐候性以及静态和动态条件下的耐久性。