Comparison of the Mechanical Properties between 2D and 3D Orthogonal Woven Ramie Fiber Reinforced Polypropylene Composites

Polypropylene (PP) composites reinforced with ramie 2D plain fabric is widely developed recently. In this paper, PP composites reinforced by using 3D orthogonal woven ramie fabric under hot-press molding process were made. The tensile and flexural strength of reinforced composites were tested and discussed. The results showed that the normalized tensile strength and the normalized tensile Young's modulus of 3D composite were significantly improved compared with that of 2D composites. The normalized flexural strength and the normalized flexural Young's modulus of 3D composite were also greatly improved. Overall results indicating that compared with 2D composite the 3D orthogonal woven ramie fabric could significantly improve the mechanical property of PP composites.