Effects of Mixing Sequence on the Structure and Properties of Natural Rubber/Butadiene Rubber/Isoprene-butadiene Block Copolymer Blends

ZHOU Zheng-bang; YANG Xiu-yue; YU Yu-sheng; LI Xiao-nan; ZHANG Xin-ping; HE Ai-hua

doi:10.14028/j.cnki.1003-3726.2025.24.356

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Effects of Mixing Sequence on the Structure and Properties of Natural Rubber/Butadiene Rubber/Isoprene-butadiene Block Copolymer Blends

更新时间：2025-04-29

- Effects of Mixing Sequence on the Structure and Properties of Natural Rubber/Butadiene Rubber/Isoprene-butadiene Block Copolymer Blends
- Polymer Bulletin Vol. 38, Issue 5, Pages: 773-781(2025)
- 作者机构：
  
  青岛科技大学高分子科学与工程学院，橡塑材料与工程教育部重点实验室，青岛 266042
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2025.24.356
  CLC：
- Received：22 November 2024，
  
  Accepted：2024-12-27，
  
  Published Online：17 February 2025，
  
  Published：20 May 2025
- 稿件说明：
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周政邦, 杨秀岳, 于雨升, 李晓楠, 张新萍, 贺爱华. 混炼顺序对天然橡胶/顺丁橡胶/丁二烯-异戊二烯嵌段共聚物共混体系结构与性能的影响研究. 高分子通报, 2025, 38(5), 773–781.

Zhou, Z. B.; Yang, X. Y.; Yu, Y. S.; Li, X. N.; Zhang, X. P.; He, A. H. Effects of mixing sequence on the structure and properties of natural rubber/butadiene rubber/isoprene-butadiene block copolymer blends. Polym. Bull. (in Chinese), 2025, 38(5), 773–781.
周政邦, 杨秀岳, 于雨升, 李晓楠, 张新萍, 贺爱华. 混炼顺序对天然橡胶/顺丁橡胶/丁二烯-异戊二烯嵌段共聚物共混体系结构与性能的影响研究. 高分子通报, 2025, 38(5), 773–781. DOI： 10.14028/j.cnki.1003-3726.2025.24.356.

Zhou, Z. B.; Yang, X. Y.; Yu, Y. S.; Li, X. N.; Zhang, X. P.; He, A. H. Effects of mixing sequence on the structure and properties of natural rubber/butadiene rubber/isoprene-butadiene block copolymer blends. Polym. Bull. (in Chinese), 2025, 38(5), 773–781. DOI： 10.14028/j.cnki.1003-3726.2025.24.356.

摘要

对于不相容橡胶共混体系而言，加工工艺在复合材料的结构与性能调控中起着关键作用。合理设计混炼顺序能够有效调控复合材料中的交联网络及填料网络结构，从而实现对复合材料最终性能的优化。本研究系统探讨了天然橡胶(NR)、顺丁橡胶(BR)和丁二烯-异戊二烯嵌段共聚物(TBIR)三者的混炼顺序对复合材料结构与性能的影响，重点分析了混炼顺序对共混组分相容性、组分共硫化反应、交联密度、填料分散性及关键动态力学性能的影响。结果表明，NR与TBIR先共混，再与BR共混的混炼顺序(NR/TBIR)/BR，能够更显著地改善复合材料的微观结构及宏观性能。本研究为绿色轮胎复合材料开发中的加工工艺优化提供了重要理论依据与实践指导。

Abstract

For incompatible rubber blends

processing technologies play crucial roles in regulating the structure and performance of materials. A well-designed mixing sequence can effectively modulate the compatibility

crosslinking networks

and filler dispersion

leading to the optimization of the composites’ final properties. Herein

we demonstrate to systematically investigate the effects of mixing sequence of natural rubber (NR)

butadiene rubber (BR)

and butadiene-isoprene block copolymer (TBIR) on the structures and performance of NR/BR/TBIR composites. Emphasis is placed on the impact of mixing sequence on component compatibility

co-sulfurization reactions

crosslinking density

filler dispersion

and key dynamic mechanical properties. The results demonstrate that the (NR/TBIR)/BR mixing sequence

where NR and TBIR are first mixed before blending with BR

significantly enhances both the microstructure and macroscopic properties of the composites. This study offers valuable theoretical insights and practical guidance for optimizing processing techniques in the development of green tire composites.

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