Roselle纤维增强热塑性聚氨酯复合材料的力学和热性能

A. Radzi, S. Sapuan, M. Jawaid, M. R. Mansor
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引用次数: 22

摘要

摘要本文的目的是介绍Roselle纤维增强热塑性聚氨酯复合材料的力学、形态和热性能的测量研究结果。以125µm及以下、125 ~ 300µm和300 ~ 425µm的不同尺寸的纤维为原料,在170℃下通过内混和热压制备了Roselle纤维/热塑性聚氨酯复合材料。结果表明,随着纤维尺寸的增加,复合材料的力学性能(拉伸、弯曲和冲击性能)得到改善。当纤维尺寸为300 ~ 425µm时,Roselle纤维/热塑性聚氨酯复合材料的拉伸强度(10.45 MPa)、抗弯强度(6.93 MPa)和冲击强度(20.22 kJ/m2)最高。利用扫描电镜研究了分散纤维和拉伸断口的形貌特征。用热重分析方法研究了复合材料的热性能,结果表明,各组分的热分解效果几乎相同。图形抽象
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Mechanical and Thermal Performances of Roselle Fiber-Reinforced Thermoplastic Polyurethane Composites
ABSTRACT The aim of this paper is to present research findings on the measurements of mechanical, morphological, and thermal properties of Roselle fiber-reinforced thermoplastic polyurethane composites. The Roselle fiber/thermoplastic polyurethane composites were prepared with fibers of different sizes such as 125 µm and lower, 125–300 and 300–425 µm by internal mixer and hot press at 170°C. The results show that mechanical properties (tensile, flexural, and impact properties) of the composites were improved with the increase in fiber sizes. The highest tensile (10.45 MPa), flexural strength (6.93 MPa), and impact strength (20.22 kJ/m2) was obtained from composites with 300–425 µm fiber size of Roselle fiber/thermoplastic polyurethane composites. Morphological properties of dispersion fiber and tensile fracture surfaces were studied using scanning electron microscope. Thermal properties of the composites were studied using thermogravimetric analyses and results showed that the thermal decomposition effect was almost similar for all compositions. GRAPHICAL ABSTRACT
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来源期刊
Polymer-Plastics Technology and Engineering
Polymer-Plastics Technology and Engineering 工程技术-高分子科学
CiteScore
1.71
自引率
0.00%
发文量
0
审稿时长
4 months
期刊最新文献
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