Mechanical and low-velocity impact properties of sandwich Carbon/Alfa and Kevlar/Alfa fiber-reinforced epoxy for wind turbine blade

IF 2.2 4区 工程技术 Q1 MATERIALS SCIENCE, TEXTILES
Toufik Djedid, Abdelkader Nour, Racha Boukaraoun, Jean B. Casimir, Salah Aguib, Chouaib Aribi, Besma. R. Baali, Amine Houari, Amir Bencheikh
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Abstract

In this study, the mechanical and low-velocity impact properties of two varieties of sandwich composites made of an epoxy resin matrix reinforced by a 40wt.% of Carbon/Alfa and or 40wt.% of Kevlar/Alfa satin cloth from long Alfa fibers for wind turbine blade manufacturing. An alkali and thermal treatments were realized to improve both of interfacial bonding between Alfa satin cloth and carbon or Kevlar skins with the matrix. Scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and chemical decomposition of treated and untreated fibers lead to prove the treatment efficiency. Chemical analyses performed on fibers provided the cellulose, hemicellulose, and lignin contents which were applied to establish that the rate of cellulose is more important for the treated fibers than for the untreated ones. The thermogravimetric (TGA) and differential thermogravimetric (DTG) analyses showed better thermal stability. The Differential scanning calorimetry (DSC) showed an increasing in the heat amount as a function of increasing the volume fraction of Alfa fibers. FTIR, SEM and chemical decomposition of Alfa fibers analysis have shown the effectiveness of alkaline treatment with increases the cellulose and a good interfacial adhesion between the treated fibers and the matrix. The static and low-velocity impact tests of Carbon-Alfa/Epoxy and Kevlar-Alfa/Epoxy give 6.81 ± 0.65 GPa and 5.42 ± 0.59 GPa in tension; 4.64 ± 0.25 GPa and 3.42 ± 0.74 GPa in 3-points bending; 11.51 ± 0.39 GPa and 8.04 ± 0.01 GPa in compression and 33.96 J and 34.15 J in impact strength.

碳纤维/阿尔法和凯夫拉尔/阿尔法纤维增强环氧树脂夹层风力涡轮机叶片的机械性能和低速冲击性能
在本研究中,研究了两种环氧树脂基复合材料的力学性能和低速冲击性能。碳/阿尔法的百分比和或40wt。由长阿尔法纤维制成的凯夫拉/阿尔法缎面布%用于风力涡轮机叶片制造。采用碱处理和热处理的方法改善了α缎面布与碳或凯夫拉表面与基体之间的界面结合。扫描电子显微镜(SEM),傅里叶变换红外(FTIR),以及化学分解处理和未处理纤维的结果证明了处理效率。对纤维进行的化学分析提供了纤维素、半纤维素和木质素的含量,这些含量被用来确定纤维素的含量对处理过的纤维比未处理过的纤维更重要。热重分析(TGA)和差热重分析(DTG)显示出较好的热稳定性。差示扫描量热法(DSC)显示,随着α纤维体积分数的增加,发热量增加。FTIR、SEM和Alfa纤维的化学分解分析表明碱性处理的有效性,增加了纤维素的含量,处理后的纤维与基体之间有良好的界面附着力。碳-阿尔法/环氧树脂和芳纶-阿尔法/环氧树脂静态和低速冲击试验的拉伸强度分别为6.81±0.65 GPa和5.42±0.59 GPa;三点弯曲4.64±0.25 GPa和3.42±0.74 GPa;抗压强度分别为11.51±0.39 GPa和8.04±0.01 GPa,冲击强度分别为33.96 J和34.15 J。
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来源期刊
Fibers and Polymers
Fibers and Polymers 工程技术-材料科学:纺织
CiteScore
3.90
自引率
8.00%
发文量
267
审稿时长
3.9 months
期刊介绍: -Chemistry of Fiber Materials, Polymer Reactions and Synthesis- Physical Properties of Fibers, Polymer Blends and Composites- Fiber Spinning and Textile Processing, Polymer Physics, Morphology- Colorants and Dyeing, Polymer Analysis and Characterization- Chemical Aftertreatment of Textiles, Polymer Processing and Rheology- Textile and Apparel Science, Functional Polymers
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