{"title":"通过环保处理实现天然纤维复合材料的机械性能","authors":"Shuo Sun, Selvum Pillay, Haibin Ning","doi":"10.1177/08927057241239954","DOIUrl":null,"url":null,"abstract":"Natural fiber reinforced composites have garnered significant interests as potential substitutes for conventional materials because of their eco-friendly attribute and favorable physical and mechanical properties. Typically the natural fiber undergoes chemical treatment before processing with the matrix to produce composites, however, the chemical treatment can have a negative impact on the environment. This research work presents an environmentally friendly treatment method for hemp fibers by using boiling water and shear force for specific time periods. The purpose of the treatment is to break down the technical fiber bundles into elementary fibers, which creates a fourfold increase in bonding surface area between the fibers and matrix. The change in fiber length and size before and after the debundling treatment were analyzed using optical microscope, confocal microscope, and scanning electron microscopy. The treated fibers were then made into mats through a wet-laid process and compression molded with low density polyethylene via film stacking. The effects of different fiber treatment variables, including debundling time, on mechanical properties were compared with composites reinforced with conventional alkali treated fibers. The results presented show that the composites reinforced by hemp fiber using the new treatment method have equivalent or improved tensile, flexural and impact properties than the composite reinforced with alkali treated fibers.","PeriodicalId":17446,"journal":{"name":"Journal of Thermoplastic Composite Materials","volume":null,"pages":null},"PeriodicalIF":3.6000,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Mechanical behaviors of composites made of natural fibers through environmentally friendly treatment\",\"authors\":\"Shuo Sun, Selvum Pillay, Haibin Ning\",\"doi\":\"10.1177/08927057241239954\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Natural fiber reinforced composites have garnered significant interests as potential substitutes for conventional materials because of their eco-friendly attribute and favorable physical and mechanical properties. Typically the natural fiber undergoes chemical treatment before processing with the matrix to produce composites, however, the chemical treatment can have a negative impact on the environment. This research work presents an environmentally friendly treatment method for hemp fibers by using boiling water and shear force for specific time periods. The purpose of the treatment is to break down the technical fiber bundles into elementary fibers, which creates a fourfold increase in bonding surface area between the fibers and matrix. The change in fiber length and size before and after the debundling treatment were analyzed using optical microscope, confocal microscope, and scanning electron microscopy. The treated fibers were then made into mats through a wet-laid process and compression molded with low density polyethylene via film stacking. The effects of different fiber treatment variables, including debundling time, on mechanical properties were compared with composites reinforced with conventional alkali treated fibers. The results presented show that the composites reinforced by hemp fiber using the new treatment method have equivalent or improved tensile, flexural and impact properties than the composite reinforced with alkali treated fibers.\",\"PeriodicalId\":17446,\"journal\":{\"name\":\"Journal of Thermoplastic Composite Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2024-03-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Thermoplastic Composite Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1177/08927057241239954\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, COMPOSITES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Thermoplastic Composite Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1177/08927057241239954","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
Mechanical behaviors of composites made of natural fibers through environmentally friendly treatment
Natural fiber reinforced composites have garnered significant interests as potential substitutes for conventional materials because of their eco-friendly attribute and favorable physical and mechanical properties. Typically the natural fiber undergoes chemical treatment before processing with the matrix to produce composites, however, the chemical treatment can have a negative impact on the environment. This research work presents an environmentally friendly treatment method for hemp fibers by using boiling water and shear force for specific time periods. The purpose of the treatment is to break down the technical fiber bundles into elementary fibers, which creates a fourfold increase in bonding surface area between the fibers and matrix. The change in fiber length and size before and after the debundling treatment were analyzed using optical microscope, confocal microscope, and scanning electron microscopy. The treated fibers were then made into mats through a wet-laid process and compression molded with low density polyethylene via film stacking. The effects of different fiber treatment variables, including debundling time, on mechanical properties were compared with composites reinforced with conventional alkali treated fibers. The results presented show that the composites reinforced by hemp fiber using the new treatment method have equivalent or improved tensile, flexural and impact properties than the composite reinforced with alkali treated fibers.
期刊介绍:
The Journal of Thermoplastic Composite Materials is a fully peer-reviewed international journal that publishes original research and review articles on polymers, nanocomposites, and particulate-, discontinuous-, and continuous-fiber-reinforced materials in the areas of processing, materials science, mechanics, durability, design, non destructive evaluation and manufacturing science. This journal is a member of the Committee on Publication Ethics (COPE).