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.

Inactive Publication Date: 2014-10-01
LUOYANG SUNRUI WIND TURBINE BLADE
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  • Abstract
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Problems solved by technology

[0017] In view of the problems existing in the prior art, the inventor proposed a vacuum infusion molding method for sandwich composite materials without pipelines to solve the problems of a large amount of resin waste and difficult demoulding of the vacuum system in the vacuum infusion molding process

Method used

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  • Pipeline-free vacuum infusion forming method of sandwiched composite material
  • Pipeline-free vacuum infusion forming method of sandwiched composite material

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specific Embodiment approach

[0033] Provide the specific embodiment of the present invention below in conjunction with accompanying drawing as follows:

[0034] Such as figure 2 As shown, the specific implementation steps of a sandwich composite material without pipeline vacuum infusion molding method of the present invention are as follows:

[0035] 1) Groove the sandwich material 4 to form a filling hole 7 for the sandwich material. The filling hole 7 for the sandwich material is located on the upper surface of the sandwich material 4. The size of the slot is 5 mm to 50 mm, and the shape of the hole is circular or semicircular. shape;

[0036] 2) Lay the lower dry layup 3 on the mold 1;

[0037] 3) Lay the sandwich material 4 with the sandwich material perfusion hole 7 on the lower dry layup layer 3;

[0038] 4) Lay the upper layer of dry layup 5 on the sandwich material 4;

[0039] 5) The diversion medium 6 is laid on the upper dry laying layer 5;

[0040] 6) Paste the sealing strip 2 on the edge...

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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.

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

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/44
CPCB29C70/443
Inventor 黎华关洪涛牛彭彭
Owner LUOYANG SUNRUI WIND TURBINE BLADE
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