Dual-fillers synergistic strategy for highly efficient anti-aging HNBR composite

IF 9.8 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology Pub Date : 2025-08-15 DOI:10.1016/j.compscitech.2025.111342

Shikun Li , Xiaojing Wu , Hengyang Liu , Hongzhen Wang , Zaifeng Li

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Abstract

As critical components in oil drilling systems, the longevity of rubber seals for packer plays key role in operational safety and production efficiency in hydrocarbon extraction operations. Herein, this study comprehensively investigates the synergistic effects of bio-silicon carbon (SiCB) and hydroxide zinc monomethacrylate (HZMMA) as reinforcing fillers on the mechanical properties, aging resistance, and thermal stability of hydrogenated nitrile butadiene rubber (HNBR) composites. The potential free radical scavenging capacity and structural characteristics of SiCB were characterized, while the vulcanization reinforcement characteristics and capture of radical mechanism for HZMMA were verified and evaluated through morphological and structural analyses. The mixture reinforcing fillers incorporating SiCB to HZMMA of 20:30 showed significant synergistic effect on the mechanical and thermal oxygen ageing properties of HNBR composites. Before and after thermal-oxidative aging, the retention of elongation at break in HNBR composites increased substantially from 11.4 % to 45 % in 30 days later at 150 °C. As expected, the minimal variations in both glass transition temperature (T_g) and crosslinking density during aging for the HNBR/SiCB/HZMMA composites were measured. Moreover, the improvement of the thermal stability for HNBR composites were confirmed by TG. This study provides novel insights and valuable references for developing the high-performance, long-service-life HNBR sealing materials in oil drilling operations.

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高效抗老化HNBR复合材料的双填料协同策略

作为石油钻井系统的关键部件，封隔器橡胶密封的使用寿命对油气开采作业的安全性和生产效率起着至关重要的作用。本研究全面考察了生物硅碳（SiCB）和氢氧化锌单甲基丙烯酸酯（HZMMA）作为补强填料对氢化丁腈橡胶（HNBR）复合材料力学性能、耐老化性能和热稳定性的协同作用。研究了SiCB的潜在自由基清除能力和结构特征，并通过形貌和结构分析对HZMMA的硫化增强特性和自由基捕获机理进行了验证和评价。SiCB与HZMMA比例为20:30的混合增强填料对HNBR复合材料的力学性能和热氧老化性能有显著的协同作用。热氧化老化前后，在150°C下，30天后，HNBR复合材料的断裂伸长率从11.4%大幅增加到45%。正如预期的那样，测量了HNBR/SiCB/HZMMA复合材料在时效过程中玻璃化转变温度（Tg）和交联密度的最小变化。此外，热重测试证实了HNBR复合材料热稳定性的改善。该研究为开发高性能、长寿命的石油钻井用HNBR密封材料提供了新的见解和有价值的参考。

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来源期刊

Composites Science and Technology 工程技术-材料科学：复合

CiteScore

16.20

自引率

9.90%

发文量

611

审稿时长

33 days

期刊介绍： Composites Science and Technology publishes refereed original articles on the fundamental and applied science of engineering composites. The focus of this journal is on polymeric matrix composites with reinforcements/fillers ranging from nano- to macro-scale. CSTE encourages manuscripts reporting unique, innovative contributions to the physics, chemistry, materials science and applied mechanics aspects of advanced composites. Besides traditional fiber reinforced composites, novel composites with significant potential for engineering applications are encouraged.