Study on the Preservation Performance of Composite Systems for Concentrated Natural Rubber Latex

WEI Xiao-kang; TANG Heng-hao; YU Ren-tong; ZHAO Yan-fang; ZHANG Fu-quan; LIAO Lu-sheng; LIAO Xiao-xue; DAI Zhong-jun; WU Yong-sheng

doi:10.14028/j.cnki.1003-3726.2025.25.299

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Study on the Preservation Performance of Composite Systems for Concentrated Natural Rubber Latex

更新时间：2026-01-28

- Study on the Preservation Performance of Composite Systems for Concentrated Natural Rubber Latex
- Polymer Bulletin Vol. 39, Issue 2, Pages: 263-269(2026)
- 作者机构：
  
  海南大学材料科学与工程学院　海口 570288
  中国热带农业科学院农产品加工研究所海南省天然橡胶加工重点实验室　湛江 524001
  云南西双版纳合盛橡胶科技有限公司　西双版纳 666100
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2025.25.299
  CLC：
- Received：13 October 2025，
  
  Accepted：19 November 2025，
  
  Published Online：15 January 2026，
  
  Published：20 February 2026
- 稿件说明：
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魏小康, 唐珩皓, 于人同, 赵艳芳, 张福全, 廖禄生, 廖小雪, 戴忠峻, 吴勇胜. 复合保存体系对浓缩天然胶乳保存效果的研究. 高分子通报, 2026, 39(2), 263–269.

Wei, X. K.; Tang, H. H.; Yu, R. T.; Zhao, Y. F.; Zhang, F. Q.; Liao, L. S.; Liao, X. X.; Dai, Z. J.; Wu, Y. S. Study on the preservation performance of composite systems for concentrated natural rubber latex. Polym. Bull. (in Chinese), 2026, 39(2), 263–269.
魏小康, 唐珩皓, 于人同, 赵艳芳, 张福全, 廖禄生, 廖小雪, 戴忠峻, 吴勇胜. 复合保存体系对浓缩天然胶乳保存效果的研究. 高分子通报, 2026, 39(2), 263–269. DOI： 10.14028/j.cnki.1003-3726.2025.25.299.

Wei, X. K.; Tang, H. H.; Yu, R. T.; Zhao, Y. F.; Zhang, F. Q.; Liao, L. S.; Liao, X. X.; Dai, Z. J.; Wu, Y. S. Study on the preservation performance of composite systems for concentrated natural rubber latex. Polym. Bull. (in Chinese), 2026, 39(2), 263–269. DOI： 10.14028/j.cnki.1003-3726.2025.25.299.

摘要

天然胶乳易受微生物影响而变质，传统高氨保存胶乳虽能稳定贮存，但存在环境与气味问题，单一保存剂又导致胶乳稳定性与力学性能不足。本研究分别以吡啶硫酮钠、聚六亚甲基双胍盐酸盐、聚六亚甲基胍磷酸盐、过硫酸铵为抑菌剂，配合相关的稳定剂，结合硫磺、亚油酸，组成新型低氨复合保存体系。通过对不同复合保存体系的浓缩胶乳胶体性能和物理机械性能进行研究，并与高氨保存胶乳性能进行对比。结果表明，复合保存剂对胶乳保存效果良好，能有效保存浓缩胶乳，不同复合保存体系浓缩胶乳的pH值及黏度稳定且保持在合理区间，机械稳定度均大于950 s，整体优于高氨保存的浓缩胶乳。以聚六亚甲基双胍盐酸盐或聚六亚甲基胍磷酸盐为主的体系能有效抑制胶乳中挥发脂肪酸值生成，180天后挥发脂肪酸值仍低于0.06；不同复合保存体系浓缩胶乳随贮存时间延长，橡胶粒子平均粒径下降，粒径分散系数变窄，其硫化胶膜的物理机械性能均提升。

Abstract

Natural rubber latex (NRL) is prone to microbial spoilage

although conventional high-ammonia preservation ensures storage stability

it causes environmental and odor problems

while single-component preservatives often result in insufficient latex stability and mechanical performance. In this study

sodium pyrithione (SPT)

poly(hexamethylene biguanide) hydrochloride (PHMB)

polyhexamethylene guanidine phosphate (PHMG-P)

and ammonium persulfate were employed as antimicrobial agents

combined with corresponding stabilizers

sulfur

and linoleic acid to form novel low-ammonia composite preservative systems. The colloidal and mechanical properties of concentrated natural rubber latex (CNRL) under different composite preservative systems were investigated and compared with those of latex preserved by a high-ammonia system. The results showed that the composite preservatives exhibited excellent preservation performance

effectively maintaining the stability of concentrated latex; the pH and viscosity of latex remained within reasonable ranges

and the mechanical stability time (MST) exceeded 950 s

overall superior to high-ammonia preservation. Systems dominated by PHMB or PHMG-P effectively inhibited the formation of volatile fatty acids (VFA)

with the VFA number remaining below 0.06 after 180 days. The average particle size of rubber particles in CNRL decreased and the particle size distribution became narrower under different preservation systems

while the mechanical properties of vulcanized natural rubber latex (VNRL) films from different composite preservative systems were all improved.

关键词

Keywords

references

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