高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (3): 565-571.doi: 10.7503/cjcu20190459

• 高分子化学 • 上一篇    下一篇

高耐磨低生热NBR/TBIR复合材料的结构与性能

武营飞,李洪昱,蔡磊,贺爱华   

  1. 青岛科技大学高分子科学与工程学院, 山东省烯烃催化与聚合重点实验室, 橡塑材料与工程教育部重点实验室, 青岛 266042
  • 收稿日期:2019-08-19 出版日期:2020-02-26 发布日期:2020-02-07
  • 通讯作者: 贺爱华
  • 作者简介:贺爱华, 女, 博士, 教授, 博士生导师, 主要从事定向聚合制备橡塑新材料的基础与应用研究. E-mail: aihuahe@iccas.ac.cn
  • 基金资助:
    国家“九七三”计划项目(No.2015CB654700(2015CB654706));山东省重大基础研究项目(No.ZR2017ZA0304);泰山学者工程项目资助

Structure and Properties of NBR/TBIR Composites with High Abrasion Resistance and Low Heat Built-up

WU Yingfei,LI Hongyu,CAI Lei,HE Aihua   

  1. Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-plastics(Ministry of Education), School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
  • Received:2019-08-19 Online:2020-02-26 Published:2020-02-07
  • Contact: Aihua HE
  • Supported by:
    † Supported by the National Basic Research Program of China(No.2015CB654700(2015CB654706));the Major Program of Shandong Provincal Natural Science Foundation, China(No.ZR2017ZA0304);the Taishan Scholar Program, China

摘要:

采用高反式-1,4-丁二烯-异戊二烯共聚橡胶(TBIR)对丁腈橡胶(NBR)进行改性, 制备了高耐磨、 低生热输送轮用白炭黑填充的NBR/TBIR橡胶纳米复合材料. 研究了NBR/TBIR橡胶纳米复合材料的交联密度、 物理力学性能及填料分散性, 探讨了材料的结构对性能的影响. 研究结果表明, 与纯NBR相比, NBR/TBIR橡胶纳米复合材料的硫化速率和交联密度随TBIR用量的增加而增大; 在保持NBR硫化胶基本力学性能、 耐老化性能和耐溶剂性能基本不变的前提下, TBIR的加入使NBR/TBIR硫化胶的耐磨性提高15%, 动态压缩生热降低5%, 动态压缩永久变形降低22%, 白炭黑分散水平提高; 与丁腈橡胶/顺丁橡胶[NBR/BR(80/20), 质量份数比]硫化胶相比, NBR/TBIR(80/20, 质量份数比)硫化胶具有更低的动态压缩生热和动态压缩永久变形及更好的填料分散性.

关键词: 反式-1, 4-丁二烯-异戊二烯共聚橡胶, 丁腈橡胶, 顺丁橡胶, 耐磨性, 纳米复合材料

Abstract:

The novel trans-1,4-poly(butadiene-co-isoprene) copolymer rubber(TBIR) was used to modify the acrylonitrile-butadiene rubber(NBR) for conveyor wheel with high abrasion resistant and low heat built-up. The crosslink density, physical and mechanical properties and filler dispersion of the NBR/TBIR vulcanizes filled with silica were discussed. The results show that the vulcanization rate and crosslink density of NBR/TBIR compounds increase with the increase in TBIR component when compared to the NBR compound. The NBR/TBIR(90/10, mass ratio) vulcanize shows 15% higher wear resistance, 5% lower heat built-up, 22% reduced dynamic compression set and better filler dispersion, while the other properties like aging resistance and solvent resistance kept almost unchanged. The NBR/TBIR(80/20, mass ratio) vulcanizate shows lower heat built-up, lower compression set and high filler dispersions when compared with NBR/BR(80/20) vulcanizate.

Key words: Trans-1, 4-poly(butadiene-co-isoprene) copolymer rubber, Acrylonitrile butadiene rubber, Butadiene rubber, Abrasion resistance, Nanocomposite

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