Silicone-Butadiene Block Copolymer Modified Silica-filled SBR/BR Rubber Composite Material

Yan Xu; Min Li; Dong-mei Cui

doi:10.11777/j.issn1000-3304.2026.26147

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Silicone-Butadiene Block Copolymer Modified Silica-filled SBR/BR Rubber Composite Material

更新时间：2026-08-06

- Silicone-Butadiene Block Copolymer Modified Silica-filled SBR/BR Rubber Composite Material
- Acta Polymerica Sinica Pages: 1-11(2026)
- 作者机构：
  
  1.中国科学院长春应用化学研究所高分子科学与技术全国重点实验室长春 130022
  2.中国科学技术大学应用化学与工程学院合肥 230026
- 作者简介：
  
  Dong-mei Cui, E-mail: dmcui@ciac.ac.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2026.26147
  CLC：
- CSTR：32057.14.GFZXB.2026.7705
- Received：29 April 2026，
  
  Accepted：31 July 2026，
  
  Online First：06 August 2026，
- 稿件说明：
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徐妍, 李敏, 崔冬梅. 硅氧烷-丁二烯嵌段共聚物改性二氧化硅填充丁苯橡胶/顺丁橡胶复合材料. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26147.

Xu, Y.; Li, M.; Cui, D. M. Silicone-butadiene block copolymer modified silica-filled SBR/BR rubber composite material. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26147.
徐妍, 李敏, 崔冬梅. 硅氧烷-丁二烯嵌段共聚物改性二氧化硅填充丁苯橡胶/顺丁橡胶复合材料. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26147. DOI： CSTR： 32057.14.GFZXB.2026.7705.

Xu, Y.; Li, M.; Cui, D. M. Silicone-butadiene block copolymer modified silica-filled SBR/BR rubber composite material. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26147. DOI： CSTR： 32057.14.GFZXB.2026.7705.

摘要

为改善白炭黑在非极性丁苯橡胶/顺丁橡胶(SBR/BR)基体中的分散性并提升复合材料性能，本研究设计合成了三乙氧基硅烷封端的硅氧烷-丁二烯共聚物(TESIPB)，并将其作为界面改性剂用于白炭黑填充SBR/BR复合材料. 通过调控硅氧烷封端、聚硅氧烷主链苯环含量及液体聚丁二烯分子量，系统考察了共聚物改性剂对复合材料的硫化特性、填料分散性、力学性能及动态力学性能的影响. 结果表明，TESIPB能有效抑制白炭黑团聚，促进填料均匀分散，显著提高复合材料的撕裂强度和断裂伸长率. 当TESIPB添加量为2.5 phr时，复合材料拉伸强度达22.7 MPa，断裂伸长率提升至1444%，撕裂强度达75.5 N/mm. 动态力学分析显示，适量TESIPB可降低复合材料在60 ℃的损耗因子(tan

)，同时提高0 ℃附近的tan

值，有助于实现低滚动阻力和良好抗湿滑性能的平衡. 本研究为开发高性能绿色轮胎用橡胶复合材料提供了新思路.

Abstract

To improve silica dispersion in a non-polar SBR/BR matrix and enhance composite performance

a polysiloxane-polybutadiene copolymer (TESIPB) with triethoxysilane end groups was designed and synthesized as an interface modifier for silica-filled SBR/BR composites. The effects of the copolymer on vulcanization

filler dispersion

mechanical and dynamic properties were systematically investigated by adjusting its siloxane end groups

benzene ring content

and liquid butadiene molecular weight. Results showed that TESIPB effectively inhibited silica agglomeration

promoted uniform filler dispersion

and significantly improved tear strength and elongation at break. With 2.5 parts of TESIPB

the composite achieved a tensile strength of 22.73 MPa

elongation at break of 1444%

and tear strength of 75.5 N/mm. Dynamic mechanical analysis indicated that an appropriate amount of TESIPB reduced tan

at 60 ℃ while increasing tan

near 0 ℃

enabling a balance between low rolling resistance and good wet-skid resistance. This work offers a new strategy for high-performance green tire rubber composites.

关键词

Keywords

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