Tensile, Flexural and Impact Properties of Hybrid Sunnhemp-Flax Fiber Based Thermosetting Composites

ABSTRACT

The recent trends in material science are focused toward composite materials. It has been used in a lot of real-life applications. In composite material, recently researchers concentrated on the natural fibers because of their sustainable effect and focus on the environment. In this paper, sunnhemp and flax natural fibers were selected for making the new hybrid natural composite material. The mechanical properties of hybrid natural composites were determined by experimental approach. The hybrid composite plates were made with the blending of sunnhemp and flax fibers using polyester resin as a matrix material. The sunnhemp-flax reinforced polyester composite plates were made by various fiber lengths such as 15 mm, 30 mm, and 50 mm. Similarly, composite plates were made with different orientations angles like 0°, 45°, and 90°. The mechanical test has been conducted for different orientations such as unidirectional, biaxial, triaxial, and random. It was found that the triaxial-oriented fiber exhibited better results in tensile strength (86.3 MPa), flexural strength (117.1 MPa), and impact strength (153.8 kJ/m²).

摘要

材料科学的最新趋势集中于复合材料。它已在许多实际应用中得到应用. 在复合材料方面, 由于天然纤维的可持续效应和对环境的关注, 近年来研究者将注意力集中在了天然纤维上. 本文选用桑海姆普天然纤维和亚麻天然纤维制备新型混杂天然复合材料. 采用实验方法测定了混杂天然复合材料的力学性能. 以聚酯树脂为基体材料, 将桑亨普纤维与亚麻纤维共混制成混杂复合板. 桑亨普亚麻增强聚酯复合板由不同长度的纤维制成, 如15mm、30mm和50mm。类似地, 复合板也采用不同的取向角, 如0°、45°和90°. 对单向、双轴、三轴和随机等不同方向进行了力学试验. 结果表明, 三轴取向纤维在拉伸强度 (86.3MPa) 、弯曲强度 (117.1MPa) 和冲击强度 (153.8 kJ/m2) 方面表现出更好的结果.

关键词:

• 桑亨普
• 亚麻
• 混合纤维
• 聚酯
• 拉伸
• 弯曲
• 冲击

KEYWORDS:

• Sunnhemp
• flax
• hybrid fiber
• polyester
• MEKP
• tensile
• flexural
• impact

Disclosure statement

No potential conflict of interest was reported by the author(s).

Highlights

• The paper deals with a new hybrid natural fiber combination with sunnhemp and flax.

• The relationship between fiber orientation angle and various mechanical properties has been determined.

• The effect on mechanical behavior for different fiber length in random fiber orientation has been studied.

• The tensile, flexural and impact strength variation with respect to mutilayer (Biaxial and Triaxial) has been showed.