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A preparation process of room temperature curing wet prepreg

A technology of curing at room temperature and preparation process, which is applied in chemical instruments and methods, lamination devices, lamination auxiliary operations, etc., and can solve problems such as high labor intensity, low production efficiency, and difficulty in controlling the amount of glue and uniformity. Achieve high production efficiency, save labor costs, and avoid local rich and poor rubber phenomenon

Active Publication Date: 2015-12-02
CETC WUHU DIAMOND AIRCRAFT MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hand lay-up operation depends on the skill of the operator. It is difficult to control the amount and uniformity of glue solution, the labor intensity is high, and the production efficiency is low.

Method used

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  • A preparation process of room temperature curing wet prepreg

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preparation example Construction

[0024] The preparation technology of a kind of room temperature curing wet prepreg of the present invention is to carry out the production of room temperature curing wet prepreg by adopting prepreg machine, figure 1 A schematic diagram of the prepreg machine is shown. This preparation process comprises the following steps:

[0025] Unwinding step: place the roll of base material 8 on the discharge roller 1, place the roll of the first release film 9 on the first release roll 3, place the roll of the second release film 10 on the second release roll On the roller 5, the traction substrate 8, the first isolation film 9 and the second isolation film 10 move linearly towards the same direction;

[0026] Glue spraying step: use the glue spraying device 2 to spray the colloid on the surface of the substrate 8;

[0027] Coating step: compounding the first isolation film 9 and the second isolation film 10 on both surfaces of the substrate 8 by extrusion of the first extrusion roller...

Embodiment 1

[0038] Using a room temperature curing epoxy adhesive as the colloid and 0.2mm thick glass fiber cloth as the substrate 8, prepare 30 layers of rectangular glass steel plates with a size of 8m×1.3m. The actual work results found that using the traditional hand lay-up process, it takes 360 minutes for two workers to mix glue, hand lay-up layer by layer, and rush to complete 30 layers of laying. Using this preparation process, the time required for two workers is 120 minutes, and the work efficiency is increased to 3 times; comparing the prepregs produced by the two processes, the color of the prepreg produced by this preparation process is more uniform, indicating that the glue content is uniform It is difficult to avoid the phenomenon of rich and poor glue in individual areas on the surface of the material using the hand lay-up method; comparing the uniformity of the thickness and size of the plate after molding, it is found that the thickness and size uniformity of the prepreg...

Embodiment 2

[0040] The glue spraying pressure remains unchanged, the braid transmission speed is reduced from 0.4m / s to 0.3m / s, and the glue content of the prepreg after glue spraying is increased from 27% to 35.5%. Through this preparation process, wet prepregs with different glue contents can be prepared according to production needs.

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Abstract

The invention discloses a process for preparing room temperature curing wet-process prepreg. The process comprises the following steps: emptying, glue spraying, laminating and cutting, wherein the laminating step comprises the substep of laminating a first isolating membrane and a second isolating membrane on two surfaces of a base material through a first extrusion roller arranged on a base material advancing path after glue spraying. According to the process for preparing wet-process prepreg, the continuous production can be realized, the labor cost is lowered, and the production efficiency is high. Meanwhile, according to the extrusion of the extrusion roller, the glue content of the prepreg can be uniform, and a local poor / rich glue phenomenon is avoided.

Description

technical field [0001] The invention relates to a continuous rapid manufacturing technology of a wet prepreg material cured at room temperature and in particular to a preparation process of a wet prepreg material cured at room temperature. Background technique [0002] At present, the wet prepreg of room temperature curing reinforced fiber resin materials is prepared by manual hand lay-up operation. The hand lay-up operation is to lay the reinforcement material layer by layer on the mold coated with the release agent, and use The squeegee tool brushes the resin adhesive on the surface of each layer of reinforcement material. Hand lay-up depends on the skills of the operator, and it is difficult to control the amount and uniformity of glue, which is labor-intensive and low in production efficiency. Contents of the invention [0003] The invention provides a preparation process of a room temperature curing wet prepreg, aiming at improving production efficiency and dipping q...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/15B32B38/00
Inventor 吴波陈旭张建江何建新曾锐葛亚婕曹卫华杨嘉勤
Owner CETC WUHU DIAMOND AIRCRAFT MFG
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