Study on fumed silica strengthened STG and impact resistance of STS/Kevlar composites

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Colloid and Polymer Science Pub Date : 2025-02-14 DOI:10.1007/s00396-025-05387-7

Fenghua Kang, Kun Zhang, Shengyang Cui, Jianhang Cao, Ke Ran, Wentao Zhou, Yali Gao, Ziyuan Zhang, Yintao Li

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引用次数: 0

Abstract

Compared to shear thickening fluid (STF), shear thickening gel (STG) offers excellent shear thickening performance without issues such as particle settling, making them widely applied in human body safety protection. This study selected fumed silica (SiO₂) as the reinforcing material. STS (STG/SiO₂) was prepared by mechanical mixing and combined with Kevlar fabric to prepare STS/Kevlar composites. The optimal SiO₂ content was discussed through dynamic rheological tests and compression tests at different strain rates, with further discussion of the SiO₂ reinforcement mechanism. The protective performance of the STS/Kevlar composites was evaluated by quasi-static puncture and Hopkinson pressure bar (SHPB). The results demonstrated that the presence of STS increased energy dissipation of fabrics, and the STS/Kevlar composites showed good impact resistance.

Graphical abstract

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气相二氧化硅增强STG及STS/凯夫拉复合材料抗冲击性能研究

与剪切增稠液（STF）相比，剪切增稠凝胶（STG）具有优异的剪切增稠性能，不存在颗粒沉降等问题，在人体安全防护方面得到了广泛应用。本研究选择气相二氧化硅（SiO2）作为增强材料。通过机械混合制备STS (STG/SiO2)，并与凯夫拉纤维结合制备STS/凯夫拉复合材料。通过动态流变试验和不同应变速率下的压缩试验，探讨了SiO2的最佳掺量，并进一步探讨了SiO2的补强机理。采用准静态穿刺法和霍普金森压杆法（SHPB）对STS/Kevlar复合材料的防护性能进行了评价。结果表明，STS的存在增加了织物的能量耗散，STS/Kevlar复合材料具有良好的抗冲击性能。图形抽象

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来源期刊

Colloid and Polymer Science 化学-高分子科学

CiteScore

4.60

自引率

4.20%

发文量

111

审稿时长

2.2 months

期刊介绍： Colloid and Polymer Science - a leading international journal of longstanding tradition - is devoted to colloid and polymer science and its interdisciplinary interactions. As such, it responds to a demand which has lost none of its actuality as revealed in the trends of contemporary materials science.