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Integrally-formed fireproof PCM composite material for battery pack and preparation method of integrally-formed fireproof PCM composite material

A technology for composite materials and battery packs, which achieves the effects of excellent fire prevention, low raw material and process costs, and simple preparation methods

Active Publication Date: 2022-06-10
浙江葆润应用材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the fire test, although the existing flame-retardant PCM is self-extinguishing when it is away from the fire, there is still an open flame during the fire process, and the material itself has poor resistance to flame impact. The material collapses during the fire process and has no ability to withstand the impact of high-temperature flames
The current fire prevention solution for the upper cover material of the battery pack is mainly to attach mica board, ceramic fiber, refractory silicone material, etc. to the inner layer of the upper cover. There are still manual operations required during the installation process, the process is complicated, the shape is poor, and the large corners are covered. Disadvantages such as difficulties

Method used

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  • Integrally-formed fireproof PCM composite material for battery pack and preparation method of integrally-formed fireproof PCM composite material
  • Integrally-formed fireproof PCM composite material for battery pack and preparation method of integrally-formed fireproof PCM composite material
  • Integrally-formed fireproof PCM composite material for battery pack and preparation method of integrally-formed fireproof PCM composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 5:

[0031] Embodiment 6:

[0032] Embodiment 7:

[0033] Comparative example 1:

[0034] Comparative example 2:

Embodiment 2

Peeling force test method: cut out the PCM material with a size of 50*110mm as the substrate; then cut out the fireproof PCM composite materials prepared in Examples 1-7 and Comparative Examples 1-3 with a size of 25*180mm, and carry out composite heating according to the above structure. pressure. The samples were prepared, and the peel force test was carried out in the direction of 90°.

[0037] Fire-resistant performance test method: continuously burn the surface of the fire-resistant PCM composite material prepared in Examples 1-7 and Comparative Examples 1-3 with a 1500°C flame, and record the flame-resistant time of the material.

[0038] Table 1: Example 1-7, comparative example 1-3 Composite performance testing results

The present invention combines fire-resistant silica gel and flame-retardant PCM. The fire-resistant silica gel can resist the high-temperature flame impact of up to 1300±200°C and form a heat insulation layer at the same time. The PCM on the back d...

Embodiment 3

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PUM

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Abstract

The invention belongs to the technical field of composite materials, and particularly relates to an integrally-formed fireproof PCM composite material for a battery pack and a preparation method of the integrally-formed fireproof PCM composite material. The hydroxyl silicone oil and the epoxy resin PCM prepreg are added into the fireproof silica gel to be integrally formed, the obtained fireproof PCM composite material can resist high-temperature flame impact of 1300 + / -200 DEG C, meanwhile, a heat insulation layer is formed, and the PCM on the back side does not generate open fire in the whole burning process, so that the composite material has excellent fireproof and heat insulation capacity; the whole preparation method is simple, low in raw material and process cost and suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to an integrally formed fireproof PCM composite material for battery packs and a preparation method thereof. Background technique [0002] Thermosetting prepreg compression molding (Propreg Compression Molding, PCM) refers to the use of woven continuous glass fiber cloth, evenly spraying the resin matrix on the fiber cloth, so that the two are fully infiltrated and the preform is obtained at a certain temperature, and then the preform Put it into the preheated mold for clamping and pressurizing to obtain the workpiece. PCM often uses quick-curing prepreg (resin + glass fiber braid), and the resin can be divided into epoxy resin, epoxy vinyl resin or phenolic vinyl resin. PCM board is widely used in new energy battery box covers due to its advantages of good mechanical properties, low density and high specific strength, which also requires PCM to have excelle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08K7/24C08K5/14B29C70/50
CPCC08L83/04B29C70/50C08L2201/02C08K7/24C08K5/14Y02E60/10
Inventor 施晓丽庞佩燕丁凯余宏伟杨再浪
Owner 浙江葆润应用材料有限公司