含氟共聚硫交联天然橡胶的耐紫外与可再加工性能

冯孝; 赵富春; 符号; 牛亚琦; 阮沛琦; 冯少兵; 张鸿; 廖双泉

doi:10.11777/j.issn1000-3304.2026.25331

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含氟共聚硫交联天然橡胶的耐紫外与可再加工性能

研究论文 | 更新时间：2026-04-03

- 含氟共聚硫交联天然橡胶的耐紫外与可再加工性能
- UV Resistance and Reprocessability of Natural Rubber Crosslinked by the Fluorinated Copolymeric Sulfur Compound
- 高分子学报 2026年页码：1-12
- 作者机构：
  
  海南大学材料科学与工程学院天然橡胶省部共建协同创新中心海口 570228
- 作者简介：
  
  E-mail: psfczhao@hainanu.edu.cn
- 基金信息：
  
  国家自然科学基金(基金号 52063012);海南省自然科学基金(基金号 323MS012);海南省高等学校研究项目(基金号 Hnjg2023-24)
- DOI：10.11777/j.issn1000-3304.2026.25331
  中图分类号：
- CSTR：32057.14.GFZXB.2026.7569
- 收稿：2025-12-31，
  
  录用：2026-02-26，
  
  网络首发：2026-04-03，
- 稿件说明：
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冯孝, 赵富春, 符号, 牛亚琦, 阮沛琦, 冯少兵, 张鸿, 廖双泉. 含氟共聚硫交联天然橡胶的耐紫外与可再加工性能. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.25331.

Feng, X.; Zhao, F. C.; Fu, H; Niu, Y. Q.; Ruan, P. Q.; Feng, S. B.; Zhang, H; Liao, S Q. UV resistance and reprocessability of natural rubber crosslinked by the fluorinated copolymeric sulfur compound. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.25331.
冯孝, 赵富春, 符号, 牛亚琦, 阮沛琦, 冯少兵, 张鸿, 廖双泉. 含氟共聚硫交联天然橡胶的耐紫外与可再加工性能. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.25331. DOI： CSTR： 32057.14.GFZXB.2026.7569.

Feng, X.; Zhao, F. C.; Fu, H; Niu, Y. Q.; Ruan, P. Q.; Feng, S. B.; Zhang, H; Liao, S Q. UV resistance and reprocessability of natural rubber crosslinked by the fluorinated copolymeric sulfur compound. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.25331. DOI： CSTR： 32057.14.GFZXB.2026.7569.

摘要

天然橡胶(NR)作为一种绿色可再生高分子材料，凭借其高弹性、应变诱导结晶性等综合的优异性能，已在交通运输、密封减震、海洋工程、航天航空等众多领域获得了广泛应用，具有不可替代的作用. 紫外线辐射是导致NR在许多特殊环境下老化失效的重要原因. NR分子主链中的C＝C双键极易受高能紫外线攻击发生断链或交联的分子重构，使其性能降低甚至失效，且传统硫磺硫化的NR难以回收再加工利用. 因而，基于逆硫化反应，设计合成了具有动态硫键和含氟聚合物结构的三元含氟共聚硫化合物(SBAF)，将其作为功能性交联剂替代传统硫磺对NR进行交联，构筑新型NR分子交联网络，同时赋予NR硫化胶强耐紫外老化性与动态分子网络特性. 结果表明，与传统硫磺相比，SBAF交联的NR (NR-SBAF)不仅具备更优异的力学性能，其耐紫外老化性能也显著提升，在120 h紫外辐照后，SBAF交联硫化胶的拉伸强度和其保持率分别比传统硫磺交联硫化胶分别提高82.8%和77.3%. 此外，NR-SBAF还具备良好的热修复和可再加工性能，重复加工后的NR-SBAF拉伸强度保持率最高可达92.99%. 通过SBAF交联NR为绿色高性能天然橡胶材料制备提供了一种新型有效的策略.

Abstract

Natural rubber (NR)

as a green and renewable polymer material

has been widely applied in numerous fields such as transportation

sealing and shock absorption

marine engineering

and aerospace

owing to its comprehensive excellent properties including high elasticity and strain-induced crystallization

and thus plays an irreplaceable role. Ultraviolet (UV) radiation is a critical factor contributing to the aging and failure of NR in many harsh environments. However

the carbon-carbon double bonds (C＝C) in the NR molecular backbone are highly susceptible to attack by high-energy UV radiation

leading to molecular rearrangement through chain scission or crosslinking

which degrades its performance or even renders it ineffective. Additionally

traditionally sulfur-vulcanized NR is difficult to recycle and reprocess. Therefore

based on inverse vulcanization

a ternary fluorinated copolysulfide compound (SBAF) with dynamic sulfur bonds and fluoropolymer segments was designed and synthesized. Employed as a functional crosslinker to replace conventional sulfur for NR vulcanization

it constructed a novel NR molecular crosslinking network

simultaneously endowing NR vulcanizates with excellent UV aging resistance and dynamic network characteristics. The results demonstrated that compared with conventional sulfur vulcanization

SBAF-crosslinked NR (NR-SBAF) not only exhibited superior mechanical properties but also showed significantly enhanced UV aging resistance. After 120 h of UV irradiation

the tensile strength and its retention ratio of SBAF-crosslinked vulcanizates were increased by 82.8% and 77.3%

respectively

compared with those of traditionally sulfur-vulcanized counterparts. Furthermore

NR-SBAF possessed favorable thermal self-healing and reprocessable properties

with the maximum tensile strength retention ratio reaching 92.99% after reprocessing. The crosslinking of NR with SBAF provides a novel and effective strategy for the preparation of green and high-performance natural rubber materials.

关键词

Keywords

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