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Open AccessArticle

A New Vacuum Pressure Infiltration CFRP Method and Preparation Experimental Study of Composite

1
School of Mechano-Electronic Engineering, Xidian University, Xi’an 710071, China
2
Army aviation institute, Beijing 101123, China
3
Mechanical Engineering College, Xi'an Shiyou University, Xi’an 710065, China
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(2), 419; https://doi.org/10.3390/polym12020419
Received: 16 December 2019 / Revised: 10 February 2020 / Accepted: 10 February 2020 / Published: 12 February 2020
(This article belongs to the Special Issue Materials and Methods for New Technologies in Polymer Processing II)
In order to prepare a carbon-fiber-reinforced polymer composite (CFRP) with ideal microstructure and properties, a new vacuum pressure infiltration CFRP method is proposed based on an analysis of existing CFRP preparation process methods. Research on composite material preparation systems was carried out by using this new method principle. The system mainly includes a fiber pre-forming module, a vacuum heating infiltration module, a hot-press curing molding module, and a data acquisition control module. Under the conditions of natural curing at 0 MPa + 6 h + 25 ℃, vacuum heating curing at –0.05 MPa + 30 min + 80 ℃, and hot-press curing at 0.7 MPa + 5 min + 50 ℃, a two-dimensional (2D) CFRP with excellent microstructure and properties was successfully prepared. Observing the microstructure of the prepared composite material, it can be found that the inside of the composite material was sufficiently and uniformly infiltrated, and common preparation defects such as holes and delamination were effectively controlled. Through the performance test, the bending strength of the material reached 790 MPa.
Keywords: vacuum infiltration hot pressing; 2D-CFRP; preparation method; experimental system design vacuum infiltration hot pressing; 2D-CFRP; preparation method; experimental system design
MDPI and ACS Style

Ma, Y.; Wang, J.; Zhao, Y.; Wei, X.; Ju, L.; Chen, Y. A New Vacuum Pressure Infiltration CFRP Method and Preparation Experimental Study of Composite. Polymers 2020, 12, 419.

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