华南理工大学学报(自然科学版) ›› 2012, Vol. 40 ›› Issue (4): 101-106.

• 材料科学与技术 • 上一篇    下一篇

纳米微晶纤维素替代炭黑补强天然橡胶

古菊 林路 罗远芳 贾德民   

  1. 华南理工大学 材料科学与工程学院,广东 广州 510640
  • 收稿日期:2011-09-16 修回日期:2011-10-29 出版日期:2012-04-25 发布日期:2012-03-01
  • 通信作者: 古菊(1961-) ,女,博士,副研究员,主要从事聚合物复合材料的制备、结构与性能研究. E-mail:psjgu@scut.edu.cn
  • 作者简介:古菊(1961-) ,女,博士,副研究员,主要从事聚合物复合材料的制备、结构与性能研究.
  • 基金资助:

    国家自然科学基金资助项目( 51173046)

Reinforcement of Natural Rubber with Nanocrystalline Cellulose as a Substitution for Carbon Black

Gu Ju  Lin Lu  Luo Yuan-fang  Jia De-min   

  1. School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2011-09-16 Revised:2011-10-29 Online:2012-04-25 Published:2012-03-01
  • Contact: 古菊(1961-) ,女,博士,副研究员,主要从事聚合物复合材料的制备、结构与性能研究. E-mail:psjgu@scut.edu.cn
  • About author:古菊(1961-) ,女,博士,副研究员,主要从事聚合物复合材料的制备、结构与性能研究.
  • Supported by:

    国家自然科学基金资助项目( 51173046)

摘要: 采用纳米微晶纤维素( NCC) 部分替代炭黑,制备了天然橡胶/纳米微晶纤维素/炭黑复合材料( NR/NCC /CB) ,研究了NCC 对NR/CB 复合材料性能的影响. 结果表明,NCC 提高了CB 补强NR 的扯断伸长率,并保持在500%以上,永久变形下降至30%以下,且NR/NCC /CB 的拉伸强度和撕裂强度基本保持或略优于NR/CB,硬度则基本保持不变; NCC 替代炭黑的量为5 phr ~ 20 phr 时,材料仍能保持良好的耐磨耗性能; NCC 替代炭黑的量低于15 phr 时,材料的抗曲挠龟裂性能得到改善; NCC 的加入还改善了材料的热空气老化性能,降低了材料的压缩疲劳生热,当NCC 取代CB 的量为10 phr 时,复合材料的生热达到最低值13. 0℃.

关键词: 纳米微晶纤维素, 炭黑, 补强, 天然橡胶

Abstract:

Natural rubber /nanocrystalline cellulose /carbon black ( NR/NCC /CB) composite was prepared by using NCC as a partial substitution for CB,and the effect of NCC on the properties of NR/CB composite was investigated. The results show that ( 1) with the addition of NCC,the elongation at break of NR/CB composite increases to more than 500%,while the permanent set decreases to less than 30%; ( 2) both the tensile strength and the tear strength of NR/NCC /CB composite are similar or superior to those of NR/CB composite,while the hardness keeps unchanged; ( 3) the abrasion resistance of the composite keeps well when the NCC substitution rate for CB ranges from 5 to 20 phr; ( 4) the flex cracking resistance of the composite improves when the NCC substitution rate is less than 15 phr; ( 5) the addition of NCC improves the thermal oxidative aging property and reduces the heat buildup due to dynamic compression; and ( 6) the temperature of heat buildup reaches its minimum value of 13.0℃ when the NCC substitution rate is 10 phr.

Key words: nanocrystalline cellulose, carbon black, reinforcement, natural rubber