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Vacuum infusion process for forming composite material and composite material

A technology of vacuum introduction and composite materials, which is applied in the field of composite material forming technology, can solve the problems of reducing the strength of composite materials, affecting the mechanical properties and apparent quality of composite materials, and achieving the reduction of porosity, improvement of apparent quality and mechanical properties, The effect of simple method

Inactive Publication Date: 2013-08-07
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is easy to introduce air during the vacuum introduction process to form air bubbles. These air bubbles will become pores after the raw materials for preparing composite materials are reacted and solidified, which greatly reduces the strength of the molded composite material and seriously affects the mechanical properties of the molded composite material. and apparent quality
At present, there is still no effective method to reduce air bubbles in the vacuum introduction process of composite molding

Method used

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  • Vacuum infusion process for forming composite material and composite material
  • Vacuum infusion process for forming composite material and composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, this embodiment provides a vacuum introduction process for composite material forming including:

[0022] (1) Preform packaging

[0023] Reinforcement material (fiberglass, carbon fiber, sandwich material, etc.) is laid on the mold and sealed with a vacuum bag.

[0024] (2) Glue configuration

[0025] According to the actual ratio of the original factory formula of the resin, the main component is a mixture of 191 unsaturated resin and 191 unsaturated resin curing agent (generally methyl ethyl ketone peroxide MEKP is used). The 191 unsaturated resin mixture is the raw material for preparing composite materials.

[0026] (3) Vacuum defoaming

[0027] Put the container (such as a beaker) containing the 191 unsaturated resin mixture into a vacuum drying oven, and perform vacuum degassing treatment on the 191 unsaturated resin mixture, control the vacuum degree in the vacuum drying oven to -0.02MPa, and vacuumize The time is 1 minute, and the ...

Embodiment 2

[0038] This embodiment provides a vacuum introduction process for forming composite materials, including:

[0039] (1) Preform packaging

[0040] Reinforcement material (fiberglass, carbon fiber, sandwich material, etc.) is laid on the mold and sealed with a vacuum bag.

[0041] (2) Glue configuration

[0042] According to the actual ratio of the original factory formula of the resin, the main component is a mixture of Altac430LV vinyl resin (pre-accelerated type) and Altac430LV vinyl resin curing agent (generally using methyl ethyl ketone peroxide MEKP). The raw material of the material.

[0043] (3) Vacuum defoaming

[0044] Put the container (such as a beaker) containing the Altac430LV vinyl resin mixture into a vacuum drying oven, and perform vacuum degassing treatment on the Altac430LV vinyl resin mixture, control the vacuum degree in the vacuum drying oven to 0.05MPa, and vacuumize the The time is 2 minutes, and the Altac430LV vinyl resin mixture after the vacuum def...

Embodiment 3

[0053] This embodiment provides a vacuum introduction process for forming composite materials, including:

[0054] (1) Preform packaging

[0055] Reinforcement material (fiberglass, carbon fiber, sandwich material, etc.) is laid on the mold and sealed with a vacuum bag.

[0056] (2) Glue configuration

[0057] The main component is a mixture of Derakane411 vinyl resin and Derakane411 vinyl resin curing agent (generally methyl ethyl ketone peroxide MEKP) according to the actual ratio of the original factory formula of the resin. The mixture of Derakane411 vinyl resin is the raw material for the preparation of composite materials.

[0058] (3) Vacuum defoaming

[0059] Put the container (such as a beaker) containing the Derakane411 vinyl resin mixture into a vacuum drying oven, and perform vacuum degassing treatment on the Derakane411 vinyl resin mixture, and control the vacuum degree in the vacuum drying oven to 0.02MPa. The time is 0.5 minutes, and the Derakane411 vinyl resin...

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Abstract

The invention discloses a vacuum infusion process for forming a composite material and the composite material. The vacuum infusion process comprises the following steps of: injecting raw materials for preparing the composite material for performing mold filling; and defoaming the raw materials before the raw materials are injected into the mold for performing mold filling. According to the process, the air bubbles in the raw materials for preparing the composite material are reduced, so that the porosity in the formed composite material is reduced, and the apparent mass and mechanical properties of the prepared composite material are improved. The method for defoaming the raw materials for preparing the composite material before mold filling is simple and easy to implement.

Description

technical field [0001] The invention belongs to the technical field of composite material molding technology, and in particular relates to a vacuum introduction technology for composite material molding and composite materials. Background technique [0002] Among the current materials, composite materials are widely used due to their light weight and high strength. The manufacturing process for composite materials is also constantly improving and innovating, from the initial hand lay-up, to mechanized spraying, pultrusion, molding and other processes, to the current vacuum introduction process. [0003] Vacuum introduction process, referred to as VIP, lays reinforcement materials (glass fiber, carbon fiber, sandwich material, etc.) The raw materials for preparing composite materials are pressed into the pre-laid reinforcement materials, and the raw materials for preparing composite materials enter the reinforcement materials until the raw materials for preparing composite m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54
Inventor 张静李进宣善勇方舟陈效华
Owner CHERY AUTOMOBILE CO LTD
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