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Preparation and Properties of Aramid Ⅲ Paper-based Composite Materials
Received:December 13, 2023  
DOI：10.11980/j.issn.0254-508X.2024.03.002
Key Words:aramid Ⅲ chopped fiber  fiber length  fiber percentage  mechanical properties  tensile fracture
Fund Project:国家重点研发计划（2021YFB3700104）。
Author NameAffiliationPostcode
LIAO Sihuang School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
SONG Zizhi School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
LONG Jin* School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
WANG Yi School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
XIONG Zhiyuan School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
HU Jian School of Light Industry and Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
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Abstract:Aramid Ⅲ paper-based composite materials were prepared from aramid III chopped fibers and meta-aramid fibrids using wet molding technology to study the effects of aramid III chopped fiber length and percentage on the homogeneity， tensile strength， modulus of elasticity， elongation at break， and tearing strength of aramid III paper-based composite materials. The results showed that when the aramid Ⅲ chopped fiber length was 6 mm and the percentage was 50%， the comprehensive mechanical properties of aramid Ⅲ paper-based composite materials were better， among which the tensile strength was 2.66 kN/m， the elastic modulus was 3 136 MPa， the elongation at break was 1.78%， and the tearing strength was 2 912 mN. The tensile fracture surfaces of paper-based composite materials showed different shapes due to the difference of the length and percentage of the aramid Ⅲ chopped fibers. Compared with the meta-aramid paper， the aramid III paper-based composite materials had better high-temperature dimensional stability， which was expected to further enhance the application prospect of aramid in the field of composite reinforcement.
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