用于氢密封的可持续橡胶纳米复合材料：纳米碳离子和生物基增塑剂的影响

IF 6.3 2区化学 Q1 POLYMER SCIENCE

Polymer Degradation and Stability Pub Date : 2024-10-22 DOI:10.1016/j.polymdegradstab.2024.111051

Sohail Yasin , Jianfeng Shi , Sheng Ye , Song Yihu , Aman Ullah , Guangzhong Li , Wenzhu Peng , Chaohua Gu

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引用次数: 0

摘要

添加剂在改变和增强橡胶性能、提高机械强度、热稳定性和耐化学性，使其更适用于各种应用方面发挥着至关重要的作用。橡胶行业面临着资源消耗大和有毒排放多的挑战，而性能增强添加剂的使用又进一步影响了这些挑战。在储氢系统中，橡胶必须使用定制添加剂才能承受高温高压，防止氢引起的膨胀，这是密封失效的主要原因。在本文中，一种新型碳质材料--碳纳米离子（CNOs）和生物基增塑剂添加剂环氧化大豆油（ESO）被用于传统的二氧化硅填充丁腈橡胶（NBR）纳米复合材料中，从而开发出用于密封应用的低碳、耐高压氢气的 O 型圈。研究结果表明，在二氧化硅填充丁腈橡胶纳米复合材料中，CNO 的加入可在 ESO 的辅助下提高交联密度 (vc)。研究发现，传统的己二酸酯类增塑剂和 ESO 容易受到高压氢气暴露的影响，而 ESO 则能随着 von-Mises 应力的增加和热氧化条件的升高，长期保持压缩密封性能。生命周期评估（LCA）结果表明，ESO 比传统增塑剂更适用于橡胶加工中的低碳制造。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Sustainable rubber nanocomposites for hydrogen sealings: Impact of carbon nano-onions and bio-based plasticizer

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Sustainable rubber nanocomposites for hydrogen sealings: Impact of carbon nano-onions and bio-based plasticizer

Additives play a crucial role in modifying and enhancing the properties of rubbers, improving mechanical strength, thermal stability, and chemical resistance to make them more suitable for various applications. The rubber industry faces challenges related to high resource consumption and toxic emissions, which are further impacted by the use of performance-enhancing additives. In hydrogen storage systems, tailored additives are required for rubbers to withstand elevated temperatures and high pressures, preventing hydrogen-induced swelling, a major cause of sealing failure. Herein, a novel form of carbonaceous material, carbon nano-onions (CNOs), and the bio-based plasticizer additive epoxidized soybean oil (ESO) are utilized in conventional silica-filled nitrile butadiene rubber (NBR) nanocomposites to develop low-carbon manufacturing high pressure hydrogen resistant O-rings for sealing applications. The results reveal that the incorporation of CNOs increases the crosslinking density (v_c), assisted by ESO, in silica-filled NBR nanocomposites. While the conventional adipate-based plasticizer and ESO were found to be susceptible to high pressure hydrogen exposures, ESO demonstrated sustained compressive sealing properties with increase in von-Mises stress and in elevated thermo-oxidative conditions over time. The results of the life cycle assessment (LCA) recommend ESO for low-carbon manufacturing in rubber processing over conventional plasticizer.

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来源期刊

Polymer Degradation and Stability 化学-高分子科学

CiteScore

10.10

自引率

10.20%

发文量

325

审稿时长

23 days

期刊介绍： Polymer Degradation and Stability deals with the degradation reactions and their control which are a major preoccupation of practitioners of the many and diverse aspects of modern polymer technology. Deteriorative reactions occur during processing, when polymers are subjected to heat, oxygen and mechanical stress, and during the useful life of the materials when oxygen and sunlight are the most important degradative agencies. In more specialised applications, degradation may be induced by high energy radiation, ozone, atmospheric pollutants, mechanical stress, biological action, hydrolysis and many other influences. The mechanisms of these reactions and stabilisation processes must be understood if the technology and application of polymers are to continue to advance. The reporting of investigations of this kind is therefore a major function of this journal. However there are also new developments in polymer technology in which degradation processes find positive applications. For example, photodegradable plastics are now available, the recycling of polymeric products will become increasingly important, degradation and combustion studies are involved in the definition of the fire hazards which are associated with polymeric materials and the microelectronics industry is vitally dependent upon polymer degradation in the manufacture of its circuitry. Polymer properties may also be improved by processes like curing and grafting, the chemistry of which can be closely related to that which causes physical deterioration in other circumstances.