Investigation of preparation for reactive halloysite loading ZDMA and its thermo-oxidative resistance on the HNBR/FKM composites

IF 3.1 3区化学 Q2 POLYMER SCIENCE

Polymer Bulletin Pub Date : 2024-12-04 DOI:10.1007/s00289-024-05605-2

Shikun Li, Zhengpeng Du, Fengling Wang, Rongqiang Cai, Daozhuang Li, Hongzhen Wang, Zaifeng Li

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Abstract

Improvement of thermo-oxidative resistance of rubber composite has not been solved well so far, it has always been a focus of research and attracts the great interest of scientists. In this work, a novel reactive halloysite nanotubes (RHNTs) loading zinc methacrylate (ZDMA) as chemical antioxidant were prepared via in situ preparation of zinc methacrylate (ZDMA) in the lumen of halloysite nanotubes (HNTs). The presence of ZDMA in the lumen of halloysite nanotubes was characterized and confirmed by FTIR, TEM, and TGA. The effect of RHNTs on the mechanical properties and thermo-oxidative resistance for HNBR/FKM-blended rubber composites was investigated, respectively. Especially, the RHNTs modified by silane coupling agent exhibited the best dispersibility in HNBR/FKM polymer matrix, and the tensile strength of HNBR/FKM/m₁-RHNTs composites was much higher than that of blank sample. During thermo-oxidative aging at 150 ℃, all the HNBR/FKM/RHNTs composites did not exhibit extreme value phenomenon of tensile strength due to aging reinforcement within the first 72-h period. The data of DSC curves showed that the HNBR/FKM/m₁-RHNTs exhibited the minimum ΔTg among all the samples. Based on the above results, obviously, it was verified that RHNTs showed better reinforcement and thermal oxygen aging resistance effect.

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负载ZDMA的活性高岭土的制备及其在HNBR/FKM复合材料上的耐热性研究

提高橡胶复合材料的抗热氧化性至今尚未得到很好的解决，一直是研究的热点，引起了科学家们的极大兴趣。本文通过在高岭土纳米管（HNTs）管腔内原位制备甲基丙烯酸锌（ZDMA），制备了一种负载甲基丙烯酸锌（ZDMA）作为化学抗氧化剂的新型活性高岭土纳米管（RHNTs）。利用红外光谱（FTIR）、透射电镜（TEM）和热重分析仪（TGA）对高岭土纳米管管腔中ZDMA的存在进行了表征和证实。研究了RHNTs对HNBR/ fkm共混橡胶复合材料力学性能和抗热氧化性能的影响。其中，硅烷偶联剂改性的RHNTs在HNBR/FKM聚合物基体中的分散性最好，HNBR/FKM/m1-RHNTs复合材料的拉伸强度远高于空白样品。在150℃热氧化时效过程中，所有HNBR/FKM/RHNTs复合材料在前72 h内均未出现因时效强化而导致的拉伸强度极值现象。DSC曲线数据显示，HNBR/FKM/m1-RHNTs在所有样品中表现最小ΔTg。基于以上结果，可以明显地验证RHNTs具有较好的补强和抗热氧老化效果。

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来源期刊

Polymer Bulletin 化学-高分子科学

CiteScore

6.00

自引率

6.20%

发文量

审稿时长

5.5 months

期刊介绍： "Polymer Bulletin" is a comprehensive academic journal on polymer science founded in 1988. It was founded under the initiative of the late Mr. Wang Baoren, a famous Chinese chemist and educator. This journal is co-sponsored by the Chinese Chemical Society, the Institute of Chemistry, and the Chinese Academy of Sciences and is supervised by the China Association for Science and Technology. It is a core journal and is publicly distributed at home and abroad. "Polymer Bulletin" is a monthly magazine with multiple columns, including a project application guide, outlook, review, research papers, highlight reviews, polymer education and teaching, information sharing, interviews, polymer science popularization, etc. The journal is included in the CSCD Chinese Science Citation Database. It serves as the source journal for Chinese scientific and technological paper statistics and the source journal of Peking University's "Overview of Chinese Core Journals."