Mechanical Properties of the Cured Laminates on the Hot-press Tackified Preforms in Vacuum Assisted Resin Transfer Molding

• Published in: Journal of Wuhan University of Technology. Materials science edition Vol. 33; no. 1; pp. 242 - 248
• Main Author: 王长春;叶金蕊;YUE Guangquan;BAI Guanghui;LIU Ling;ZHANG Boming
• Format: Journal Article
• Language: English
• Published: Wuhan Wuhan University of Technology 01.02.2018; Springer Nature B.V
• Subjects: Autoclaving; Chemistry and Materials Science; Laminates; Materials Science; Mechanical properties; Permeability; Preforms; Resin transfer molding; 机械性质;热压机;薄片;树脂;真空;厚度一致性;MPa;修改; hot-press tackified preforms; mechanical property; VARTM; thickness uniformity; permeability
• ISSN: 1000-2413; 1993-0437
• DOI: 10.1007/s11595-018-1812-1

A hot-press tackified preform was used to improve the uniformity of the laminates thickness and the mechanical properties of the obtained laminates were studied using vacuum assisted resin transfer molding（VARTM）. Two modified preforms were prepared under 0.1 and 0.6 MPa in an autoclave and then were used to fabricate the laminates via VARTM. Permeability and thickness distribution of the laminates were obtained by using a special device. Moreover, the tensile and compressive strengths of the obtained laminates were studied and compared with the unmodified ones. Results show that the tackified laminates present a maximum and minimum thickness under 0.1 and 0.6 MPa, respectively. The thicknesses and in-plane permeability of the tackified laminates, with better thickness uniformity, are significantly decreased compared with that of the unmodified cases, while the tensile and compressive strengths of the tackified laminates are improved obviously. Results show that the mechanical property of the tackified laminates prepared by hotpressing at 0.1 MPa is better than that processed at 0.6 MPa.