Pipeline-free vacuum infusion forming method of sandwiched composite material

A technology for sandwich materials and composite materials, which is applied in the field of composite vacuum infusion molding, can solve the problems of resin waste and difficult demoulding of vacuum system, and achieve the effects of improving working environment, reducing demolding difficulty and reducing environmental pollution.
CN104070684AInactive Publication Date: 2014-10-01LUOYANG SUNRUI WIND TURBINE BLADE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LUOYANG SUNRUI WIND TURBINE BLADE
Publication Date
2014-10-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a pipeline-free vacuum infusion forming method of a sandwiched composite material for vacuum infusion formation of a sandwiched composite material. According to the invention, a method for forming a sandwiched material filling hole (7) by slotting a sandwiched material (4) in a sandwiched composite material structure is used for replacing a flow guide pipe used in the prior art to establish a vacuum system. Liquid resin flows through the sandwiched material filling hole (7) and infiltrates an upper dry laying layer (5), a sandwiched material (4) an a lower dry laying layer (3). After a product is cured, the slotted sandwiched material (4) is left in the product and is integrated with the product. Resin is kept in the product by pipeline-free filling; a great amount of resin waste is reduced; meanwhile, the problem of demoulding difficulty of a vacuum system on the surface of the product is solved; because of reduction of a great amount of solid waste, the environmental pollution is prevented; the working environment is improved.
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Description

technical field

[0001] The invention belongs to the technical field of vacuum infusion molding of composite materials, and mainly relates to a method for vacuum infusion molding of sandwich composite materials without pipelines. Background technique

[0002] In recent years, my country's composite material industry has developed rapidly, and the vacuum infusion molding process has been widely promoted and applied. The basic principle of the vacuum infusion molding process is to carry out dry layup on the mold, lay the diversion medium on the dry layup, lay the diversion pipe on the diversion medium, and then lay the mold and the layup (including the diversion medium and diversion medium) tube) to establish a vacuum system. Under vacuum pressure, the liquid resin infiltrates the dry laminate of the composite material through the diversion tube and the diversion medium, and forms a product after curing.

[0003] Sandwich composite material is one of the structural forms of c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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