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二氧化硅纳米颗粒和聚合物对无氟泡沫流变学的影响。

Effects of SiO Nanoparticles and Polymers on the Rheology of Fluorine-Free Foam.

作者信息

Li Haoyu

机构信息

College of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054, China.

出版信息

ACS Omega. 2025 Aug 12;10(33):38046-38055. doi: 10.1021/acsomega.5c05275. eCollection 2025 Aug 26.

DOI:10.1021/acsomega.5c05275
PMID:40893260
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12392013/
Abstract

To enhance the performance of fluorine-free firefighting foam, a mixed dispersion system comprising silica nanoparticles (SiO NPs), guar gum (GG), and surfactants was developed and systematically evaluated. Compared with systems containing only NPs or GG, the combined formulation significantly improved foam stability and rheological properties. The optimized GG-NPs formulation exhibited the lowest drainage volume and the highest storage modulus, indicating enhanced structural integrity. Rheological analysis revealed strong shear-thinning behavior and a high zero-shear viscosity, with Cross model fitting confirming structural consistency across shear rates. Thixotropic tests showed that the foam could recover over 76% of its original elasticity after shear disruption. These improvements are attributed to the synergistic interaction between GG and NPs, forming a network that reinforces both the foam film and bulk liquid phase. This study provides quantitative insight into NPs-polymer synergy in foam systems and presents a scalable, environmentally friendly formulation with potential to meet modern fire safety performance standards.

摘要

为提高无氟消防泡沫的性能，开发并系统评估了一种由二氧化硅纳米颗粒（SiO NPs）、瓜尔胶（GG）和表面活性剂组成的混合分散体系。与仅含纳米颗粒或瓜尔胶的体系相比，组合配方显著提高了泡沫稳定性和流变性能。优化后的GG-NPs配方排水体积最低，储能模量最高，表明结构完整性增强。流变学分析显示出强烈的剪切变稀行为和高零剪切粘度，Cross模型拟合证实了在不同剪切速率下结构的一致性。触变性测试表明，泡沫在剪切破坏后可恢复其原始弹性的76%以上。这些改进归因于GG和纳米颗粒之间的协同相互作用，形成了一个增强泡沫膜和本体液相的网络。本研究提供了对泡沫体系中纳米颗粒-聚合物协同作用的定量见解，并提出了一种具有扩大规模潜力、环保的配方，有可能满足现代消防安全性能标准。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4a36/12392013/075dd93a2e9e/ao5c05275_0009.jpg
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本文引用的文献

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