Reinforcement Effects of Shear Thickening Fluid over Mechanical Properties of Nonwoven Fabrics

Author:

Huang Chen-Hung1,Chien Chih-Hua2,Shiu Bing-Chiuan3,Chen Yueh-Sheng45,Lin Jia-Horng267ORCID,Lou Ching-Wen35789ORCID

Affiliation:

1. Department of Aerospace and Systems Engineering, Feng Chia University, Taichung 407102, Taiwan

2. Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung 407102, Taiwan

3. Fujian Key Laboratory of Novel Functional Textile Fibers and Materials, Minjiang University, Fuzhou 350108, China

4. Department of Biomedical Engineering, China Medical University, Taichung 404333, Taiwan

5. Department of Bioinformatics and Medical Engineering, Asia University, Taichung 413305, Taiwan

6. School of Chinese Medicine, China Medical University, Taichung 404333, Taiwan

7. Advanced Medical Care and Protection Technology Research Center, College of Textile and Clothing, Qingdao University, Shandong 266071, China

8. Innovation Platform of Intelligent and Energy–Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China

9. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404333, Taiwan

Abstract

Conventional personal protective equipment is usually made in multilayer stacks, and appears clumsy and uncomfortable, offering limited protection. In recent years, a newly-developed nanosuspension, shear thickening fluids (STFs), has been commonly applied to buffer and shock absorption. In this study, nonwoven fabrics are impregnated with 30 wt%, 35 wt%, or 40 wt% STF in order to strengthen the interaction among fibers. The resultant STF composite nonwoven fabrics are observed for their morphology, and tested for their tensile strength, tearing strength, bursting strength, and dynamic impact resistance, thereby examining the damage resistance of the materials. The SEM images indicate that the fibers are adhered with a tremendous amount of silicon dioxide (SiO2) particulates with a rise in the STF concentration, due to which the smooth fibers become rough. Moreover, the mechanical test results indicate that a rise in the STF concentration improves the frictional force during the relative motion of fibers, which subsequently mechanically strengthens the STF composite nonwoven fabrics. The dynamic impact test results show that when the STF concentration increases from 30 wt% to 35 wt%, the materials exhibit dynamic impact strength that is significantly improved to 51.9%. Nonetheless, significant improvement in dynamic impact strength is absent when the STF concentration increases to 40 wt%. To sum up, a critical value of STF concentration has a positive influence over the mechanical strengths of STF composite nonwoven fabrics.

Funder

Ministry of Science and Technology of Taiwan

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

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