A flexible air extraction kit for composite material molding and its air extraction method

Abstract

The invention discloses a flexible air extracting suite for composite material molding and an air extracting method thereof. The flexible air extracting suite for composite material molding at least includes a VAP film, an air-guiding glue-absorbing material, a supporting material, an air extracting pipe and an air-tight outer wall; the VAP film is located at the lowest layer; the air-guiding glue-absorbing material is arranged on the VAP film; the supporting material is arranged on the air-guiding glue-absorbing material; the air-tight outer wall is in sealing connection with the VAP film by using a sealing material to form closed space; the air extracting pipe passes through the air-tight outer wall, and a pipe port of the air extracting pipe is located above the supporting material; the air-guiding glue-absorbing material, the supporting material and the air-tight outer wall are each made of a flexible material and can be closely attached onto the complex surface of a mold cavity, air extracting operation of these parts can be completed, and the problem that these parts generate bubble enrichment can be reduced or prevented, so as to ensure the quality of composite material products.

Description

technical field [0001] The invention relates to an air extraction kit used in the molding and manufacturing process of composite materials, in particular to a flexible air pumping kit capable of pumping air at any position during the molding and manufacturing process of composite materials with irregular shapes or curved surfaces and The air extraction method belongs to the technical field of composite material forming, and is mainly used in the vacuum infusion molding process of composite materials with irregular shapes or curved surfaces. Background technique [0002] When making large-scale composite components (such as wind turbine blades, yachts, etc.), the vacuum infusion process (VIP, VacuumInfusionProcess) is usually used. That is to say, the system is under certain negative pressure conditions, and the resin is injected into the reinforcing material from the outside, and then solidified and formed. The negative pressure of the system is formed by pumping out the ai...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a size, position and quantity of air extraction that can be adjusted according to the actual situation to solve the problem of bubble enrichment in a special position because the air extraction position of the existing air extraction kit is fixed, which can solve the special problem of composite material products. The flexible exhaust kit for composite material molding with problems such as poor infiltration or bubble enrichment at the position ensures the quality of composite material products, and the exhaust pipeline can be reused, reducing production costs

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