Vacuum infusion method and product thereof

Abstract

The invention discloses a vacuum infusion method and a product thereof. The process comprises the following steps: treating a die, spraying a gel coat, laying a surface felt, laying multilayer reinforcing materials, laying a flow guide screen, laying a layer of multi-axial cloth, laying a flow guide tube, laying vacuum film bags, vacuumizing, injecting materials, curing, removing the flow guide tube and the vacuum bag film, and releasing the film, wherein laying layers of the multilayer reinforcing materials are as follows: two layers of multi-axial cloth, a sandwich felt, two layers of multi-axial cloth, a sandwich felt, fixed PVC reinforcing ribs, at least two layers of multi-axial cloth and a composite felt. An isolation film layer is reduced, and the remainder amount of resin on the laying layers is obviously reduced in the vacuum infusion process disclosed by the invention, thus the utilization rate of the resin is greatly increased, and the resin of the resin on the surface of the obtained product is increased, and the strength of the product is obviously increased; and the generation amount of garbage such as an isolation film is reduced, the production cost is reduced, and good social and economic benefits are achieved.

Description

technical field [0001] The invention belongs to the field of vacuum technology, and in particular relates to a vacuum introduction method and its products. Background technique [0002] Composite materials are widely used because of their light weight and high strength, and the manufacturing process for composite materials is also constantly improving and innovating. Vacuum induction process is a liquid molding process of composite materials, which is widely used in the manufacture of composite automobiles, fan blades and composite yachts. At present, the vacuum introduction process is a relatively mature process in the FRP industry. The general process steps are as follows: mold treatment—gel coating—surface felt—laying multi-layer reinforcing materials—laying isolation film—laying diversion net—laying diversion Tube—vacuum film bag laying—vacuumizing—material injection—curing—removing isolation film, diversion net, diversion tube, vacuum bag film—filming, the biggest disa...

AI Technical Summary

Problems solved by technology

At present, the vacuum introduction process is a relatively mature process in the FRP industry. The general process steps are as follows: mold treatment—gel coating—surface felt—laying multi-layer reinforcing materials—laying isolation film—laying diversion net—laying diversion Tube—vacuum film bag laying—vacuumizing—material injection—curing—removing isolation film, diversion net, diversion tube, vacuum bag film—filming, the biggest disadvantage of this process is the isolation film, diversion net, and diversion tube 1. The vacuum bag film is treated as garbage after curing, and the resin left in the mesh of the diversion mesh and the resin left on the surface of the isolation film are all treated as garbage, which reduces the utilization rate of the resin to only about 90%. , resources are wasted, and a lot of rubbish is generated for the society

However, with the development of the industry and the needs of social environmental protection, the traditional vacuum introduction process has many disadvantages, such as high cost, a lot of garbage generated, and waste of resources.