Continuous fiber-reinforced heat convertible resin composite 3D printing process

Abstract

Provided is a continuous fiber-reinforced heat convertible resin composite 3D printing process. Firstly, heat convertible resin prepolymer, a high-temperature curing agent, light-cured resin prepolymer and a photoinitiator are selected as pre-soaking raw materials; after the pre-soaking raw materials are heated and mixed to be uniform, the resin prepolymer system is pre-soaked through continuous dry fiber fiber bundles; cooling is carried out after soaking is carried out, and continuous fiber-reinforced heat convertible resin composite fibers are obtained; the composite fibers are conveyed into a 3D printing head, heating is carried out again, and the fused fibers are pulled out of a printing nozzle; after the fibers are pulled out, ventilating and cooling are immediately carried out, andpre-curing is completed through ultraviolet source irradiation; circulating printing is carried out layer by layer, and therefore a pre-formed component is prepared; and finally the pre-formed component is placed in a temperature environment capable of triggering a thermocuring reaction for curing forming, and a 3D printing formed component is manufactured. According to the continuous fiber-reinforced heat convertible resin composite 3D printing process, 3D printing fast forming of the continuous fiber-reinforced heat convertible resin composite component is achieved.

Description

technical field [0001] The invention relates to the technical field of 3D printing of composite materials, in particular to a 3D printing process of continuous fiber reinforced thermosetting resin-based composite materials. Background technique [0002] 3D printing technology is based on a digital model, through the use of bondable materials such as metal powder or plastic linear wire, in a layer-by-layer printing or layer-by-layer selective bonding method to construct rapid additive materials. Manufacturing Technology. 3D printing consumables are the material basis of 3D printing and also the bottleneck that restricts the further development and application of 3D printing. At present, 3D printing consumables are mainly divided into four types: ceramics, metals, composite materials and polymers. Commonly used 3D printing consumables are mainly pure thermoplastic filaments, including acrylonitrile-butadiene-styrene copolymer (ABS ), polylactic acid (PLA), etc. Its defects ...

AI Technical Summary

Problems solved by technology

3D printing consumables are the material basis of 3D printing and also the bottleneck that restricts the further development and application of 3D printing

[0004] In summary, the current existing technology does not realize the 3D printing of continuous fiber reinforced thermosetting resin matrix composites.