首页|Optimization Mechanism of Mechanical Properties of Basalt Fiber-Epoxy Resin Composites by Interfacially Enriched Distribution of Nano-Starch Crystals

Optimization Mechanism of Mechanical Properties of Basalt Fiber-Epoxy Resin Composites by Interfacially Enriched Distribution of Nano-Starch Crystals

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Fibre reinforced polymer composites have become a new generation of structural materials due to their unique advantages such as high specific strength,designability,good dimensional stability and ease of large-area monolithic forming.However,the problem of interfacial bonding between the resin matrix and the fibres limits the direct use of reinforcing fibres and has become a central difficulty in the development of basalt fibre-epoxy composites.This paper proposes a solution for enhancing the strength of the fibre-resin interface using maize starch nanocrystals,which are highly yield and eco-friendly.Firstly,in this paper,corn starch nanocrystals(SNC)were prepared by hydroly-sis,and were deposited on the surface of basalt fibers by electrostatic adsorption.After that,in order to maximize the modification effect of nano-starch crystals on the interface,the basalt fiber-epoxy resin composite samples were prepared by mixing in a pressureless molding method.The test results shown that the addition of basalt fibers alone led to a reduction in the strength of the sample.Deposition of 0.1 wt％SNC on the surface of basalt fibers can make the strength consistent with pure epoxy resin.When the adsorption amount of SNC reached 0.5 wt％,the tensile strength of the samples was 23.7％higher than that of pure epoxy resin.This is due to the formation of ether bond homopolymers between the SNC at the fibre-epoxy interface and the epoxy resin,which distorts the originally smooth interface,leading to increased stress concentration and the development of cracks.This enhances the bind-ing of basalt fibers.The conclusions of this paper can provide an effective,simple,low-cost and non-polluting method of interfacial enhancement modification.

Basalt fibresEpoxy resinFibre reinforced compositesStarch nanocrystalsEco-friendly

Yanpeng Wei、Jiale Zhao、Jian Zhuang、Peng Zhang、Zhiwu Han

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College of Biological and Agricultural Engineering,Jilin University,Changchun 130025,China

Key Laboratory of Bionics Engineering,Ministry of Education,Jilin University,Changchun 130025,China

Weichai Lovol Heavy Industry Co.,LTD,Weifang 261031,China

National Key Research and Development Project of ChinaNational Key Research and Development Project of ChinaNational Natural Science Foundation of ChinaScience and Technology Development Plan Project of Jilin Province of ChinaScience and Technology Research Project of Jilin Provincial Education Department of ChinaChangchun Municipal Key Research and Development Program of China

2018YFA0703300521053005207521520200201061JCJJKH20221021KJ21ZGN22

2024

10.1186/s10033-024-01031-7

中国机械工程学报
中国机械工程学会

中国机械工程学报

CSTPCD
影响因子：0.765
ISSN：1000-9345
年,卷(期)：2024.37(3)