Super-hybrid fireproof prepreg for new energy automobile battery box and preparation method

A new energy vehicle, ultra-hybrid technology, applied in the direction of chemical instruments and methods, lamination, layered products, etc., can solve the problems of poor fire and flame retardancy, low ignition point, and imperceptibility, so as to improve stiffness and damage tolerance , reduce residual porosity, and reduce overall cost

Pending Publication Date: 2021-06-18
SHENZHEN ACAD OF AEROSPACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These damages are not easy to detect and are concealed, causing great safety hazards
The composite material itself has poor fire and flame retardant performance. Although the flame retardant performance of the composite material can be improved by adding a flame retardant (patent CN 108676309 A and patent CN 111284035 A), the common problem of this flame retardant composite material is the ignition point Low, under the continuous action of the internal or external flame of the battery box, the material itself cannot prevent the flame from burning and spreading inside the material, and cannot play the role of fire prevention

Method used

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  • Super-hybrid fireproof prepreg for new energy automobile battery box and preparation method
  • Super-hybrid fireproof prepreg for new energy automobile battery box and preparation method
  • Super-hybrid fireproof prepreg for new energy automobile battery box and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment one: refer to figure 1 and figure 2 As shown, a super-hybrid anti-fire impregnation material for new energy vehicle battery boxes and its preparation method are composed of a resin matrix, an aluminum alloy layer, and a fiber layer.

[0026] As a preference: the resin matrix is ​​a thermosetting epoxy resin with flame retardant function, composed of epoxy resin E51: 10 parts, epoxy resin F51: 35 parts, nitrile rubber modified epoxy resin: 10 parts, modified containing Phosphorus epoxy resin: 15 parts, curing agent dicyandiamide: 6 parts, feed agent UR500: 1.5 parts, the resin is infiltrated in each layer of materials, and the resin content is 38%.

[0027] As a preference: the thickness of the aluminum alloy layer 1 is 0.06 mm, the surface of the aluminum alloy is anodized with phosphoric acid, and uniformly arranged circular holes with a diameter of 2 mm are processed.

[0028] As a preference: the fiber layer 2 is basalt fiber cloth with a surface densit...

Embodiment 2

[0033] Example 2: A super-hybrid fireproof prepreg for new energy vehicle battery boxes and its preparation method, which consists of a resin matrix, an aluminum alloy layer, and a fiber layer.

[0034] As a preference: the resin matrix is ​​a thermosetting epoxy resin with flame retardant function, composed of epoxy resin E51: 10 parts, epoxy resin F51: 35 parts, nitrile rubber modified epoxy resin: 10 parts, modified containing Phosphorus epoxy resin: 15 parts, curing agent dicyandiamide: 6 parts, feed agent UR500: 1.5 parts, the resin is infiltrated in each layer of materials, and the resin content is 45%.

[0035] As a preference: the thickness of the aluminum alloy layer 1 is 0.3 mm, the surface of the aluminum alloy is anodized with phosphoric acid, and evenly arranged circular holes with a diameter of 2 mm are processed.

[0036] As a preference: the fiber layer 2 is basalt fiber cloth with a surface density of 200g / m 2 . The fiber layer / aluminum alloy layer in the su...

Embodiment 3

[0040]Embodiment 3: The super-hybrid prepreg obtained in Embodiment 1 and 2 is made into a composite material plate and subjected to a fire performance test, and various performances are tested according to the national standard, and the test results are as follows:

[0041]

[0042] It can be seen from the above data that the hyper-hybrid prepreg prepared by the present invention has a higher oxygen index, refractoriness and fire resistance limit than the common flame-retardant prepreg, which can ensure the fireproof performance of the box.

[0043] Among them, the processing method of ordinary basalt flame-retardant prepreg is to soak the flame-retardant prepreg resin on the basalt fiber cloth on the prepreg production line to obtain the basalt flame-retardant prepreg. The material is composed of flame retardant resin and basalt fiber cloth.

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Abstract

The invention discloses a super-hybrid fireproof prepreg for a new energy automobile battery box and a preparation method. The super-hybrid fireproof prepreg comprises a resin matrix layer, an aluminum alloy layer and a fiber layer. The preparation method comprises the following steps of firstly, preparing the resin matrix into an adhesive film, and then infiltrating and fusing the adhesive film with the fiber layer and the aluminum alloy layer to form the super-hybrid fireproof prepreg. The new energy automobile battery box prepared from the super-hybrid fireproof prepreg not only can reduce the weight of the battery box, but also has the characteristics of high specific strength and high specific modulus of a fiber reinforced resin-based composite material and good fireproof and impact damage resistance of a metal material.

Description

technical field [0001] The invention relates to the technical field of battery boxes for lightweight new energy vehicles, in particular to a super-hybrid fireproof prepreg for battery boxes of new energy vehicles and a preparation method thereof. Background technique [0002] Due to the need to reduce weight and increase the cruising range of new energy vehicles, the materials used in battery boxes of new energy vehicles have gradually transitioned from metal materials to fiber composite materials. Composite materials have the advantages of high specific strength and excellent corrosion resistance, and can be used as new The basic composition material of energy vehicle battery box to realize its lightweight. [0003] Fiber composite battery boxes also have their own shortcomings, mainly low-speed impact resistance and poor fire resistance. During the driving process of the car, the impact of splashed stones on the composite material battery box may cause internal damage to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/38B32B27/20B32B15/20B32B15/092B32B15/085B32B27/32B32B37/06B32B37/10B32B38/08B32B38/10C08L63/02C08L63/00C08K7/10C08J5/24
CPCB32B27/38B32B27/20B32B15/20B32B15/092B32B15/085B32B27/32B32B37/06B32B37/10B32B38/08B32B38/10C08J5/24C08J2363/02C08J2463/00C08K7/10B32B2262/10B32B2307/3065
Inventor 晏义伍于翔袁振胡鹏
Owner SHENZHEN ACAD OF AEROSPACE TECH
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