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Bottom pouring type vacuum perfusion process

A vacuum infusion and process technology, which is applied in the field of injection vacuum infusion process, can solve the problems of unfavorable control, glue injection valve open for a long time, and cannot be checked out on site.

Active Publication Date: 2010-05-19
LIANYUNGANG ZHONGFU LIANZHONG COMPOSITES GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the current vacuum infusion process, the resin flows from the upper surface to the lower surface, and the lower surface is attached to the mold. If the product is very thick, whether the lower surface is completely soaked cannot be checked on site, so it will cause premature closing of the glue injection Valve, or injection valve open for a long time
This is not conducive to the control of the scene

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0031] A down injection vacuum infusion process, first turn on the mold heating system to 32°C, so that the surface temperature of the mold is between 28-32°C

[0032] Lay diversion net on the surface of the mold, 8-15cm away from the edge of the mold;

[0033] Laying the perforated film occupies the entire surface of the mould;

[0034] Lay the release cloth to occupy the entire surface of the mold;

[0035] Then lay the glass fiber cloth layup;

[0036] Lay the release cloth to cover the fiberglass cloth layer;

[0037] Lay VAP film and cover glass fiber cloth layup; Vacuum Assisted Process

[0038] Lay the air felt and cover the glass fiber cloth layer;

[0039] VAP film - Vacuum assisted processing under vacuum can be used to make reinforced fiber composites. This perfusion treatment was invented and patented by EADS. Later, SAERTEX will provide it to the world as a legal user of the patent. This is a filtration technology under low pressure percolation using a spec...

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Abstract

The invention relates to a bottom pouring type vacuum perfusion process. A flow guidance screen is placed below a glass fiber cloth pavement layer, and resin is perfused upwards from the surface of a die so that air bubbles in the resin are led out directly. The resin saturates glass fibers from bottom to top. In order to eliminate micro air bubbles in the resin, a layer of VAP film is paved on the surfaces of the glass fibers. A layer of ventilating felt is paved on the VAP film as a transmission medium of a gas to evenly distribute vacuum, and the ventilating felt is connected with a vacuum pipe, and the vacuum of a whole perfusion system is evenly distributed, but the resin cannot be leaked out. The air bubbles in the resin are greatly reduced so that the compaction rate of a product is improved. The upper surface of the product is an adhesive surface without air bubbles, so the upper surface can be adhered to other parts of a blade very well. The bottom pouring type vacuum perfusion process improves the reliability of the process and is convenient for field control, the most significant characteristic of the resin flow is that the resin flows from the die to a non-die surface of the product, and the bottom pouring type vacuum perfusion process is different from the conventional top pouring type process.

Description

technical field [0001] The invention relates to a vacuum-assisted infusion molding technology, in particular to a down-cast vacuum infusion process. Background technique [0002] In the current vacuum infusion process, the resin flows from the upper surface to the lower surface, and the lower surface is attached to the mold. If the product is very thick, whether the lower surface is completely soaked cannot be checked on site, so it will cause premature closing of the glue injection The valve, or the injection valve is open for a long time. This is not conducive to the control of the scene. Contents of the invention [0003] The technical problem to be solved by the present invention is to address the deficiencies of the prior art, and propose a down-casting vacuum infusion process that facilitates on-site control, reduces air bubbles in the resin, and improves the compactness of the product. [0004] The technical problem to be solved in the present invention is achieve...

Claims

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Application Information

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IPC IPC(8): B29C70/44
Inventor 任桂芳乔光辉黄辉秀乔小亮
Owner LIANYUNGANG ZHONGFU LIANZHONG COMPOSITES GRP
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