中国塑料 ›› 2023, Vol. 37 ›› Issue (1): 46-53.DOI: 10.19491/j.issn.1001-9278.2023.01.008

• 材料与性能 • 上一篇    下一篇

共改性煤粉增强丁苯橡胶的硫化、力学和热稳定性能研究

焦锐敏1, 何小芳1(), 董青松2, 王林2, 曹新鑫1   

  1. 1.河南理工大学材料科学与工程学院,河南 焦作 454000
    2.倍耐力轮胎(焦作)有限公司,河南 焦作 454150
  • 收稿日期:2022-09-29 出版日期:2023-01-26 发布日期:2023-01-26
  • 通讯作者: 何小芳(1980—),女,副教授,主要从事新型建筑材料和高分子材料成型加工方面的研究,cxxhxf@126.com
    E-mail:cxxhxf@126.com

Study on vulcanization and mechanical and thermal stabilities of SBR reinforced with co⁃modified coal

JIAO Ruimin1, HE Xiaofang1(), DONG Qingsong2, WANG Lin2, CAO Xinxin1   

  1. 1.School of Material Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,China
    2.Pirelli Tire(Jiaozuo) Co,Ltd,Jiaozuo 454150,China
  • Received:2022-09-29 Online:2023-01-26 Published:2023-01-26
  • Contact: HE Xiaofang E-mail:cxxhxf@126.com

摘要:

将硅烷偶联剂KH⁃560和硫化促进剂CZ共改性煤粉(Coal)作为增强填料加入到丁苯橡胶(SBR)中制备改性SBR/ Coal复合材料,通过设置不同的共改性Coal的添加量,寻找KH⁃560、CZ共改性Coal增强丁苯橡胶的最佳实验配比。结果表明,KH⁃560的最佳添加量为Coal质量的5 %,此时SBR/ Coal⁃KH560复合材料的力学性能最佳; KH⁃560和CZ改性Coal可以明显减少Coal团聚现象,在丁苯橡胶中均匀分散。当Coal⁃KH560⁃CZ添加量为40 %时,与纯SBR相比,拉伸强度由1.66 MPa升高至2.9 MPa,断裂伸长率由295 %升高至390 %,撕裂强度由7.1 N/mm增加至11.6 N/mm,复合材料的力学性能和热稳定性能得到改善,加工性能也得到较大提升。

关键词: 煤粉, 丁苯橡胶, 共改性, 复合材料, 均匀分散

Abstract:

Pulverized coal powders were modified jointly with KH⁃560 and a vulcanization accelerator (CZ), and then the modified coal was added to SBR as a reinforcing filler to prepare the modified coal/SBR composites. The optimal experimental ratio was explored for the co⁃modified coal⁃reinforced SBR by setting different loadings of co⁃modified coal in the composites. The results indicated that the optimum addition amount of KH⁃560 was 5 wt% in the composite, resulting in optimal mechanical properties for the coal⁃KH560/SBR composite. KH⁃560 and CZ modified coal can obviously reduce the agglomeration of coal and disperse uniformly in SBR. When the addition amount of Coal⁃KH560⁃CZ is 40 %, compared with pure SBR, the tensile strength increases from 1.66 MPa to 2.9 MPa, the elongation at break increases from 295 % to 390 %, and the tear strength increases from 7.1 N/mm to 11.6 N/mm. The mechanical properties and thermal stability of the composite are improved, and the processability is also greatly improved.

Key words: coal, styrene butadiene rubber, co?modification, composite material, uniform dispersion

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