Electrical safety improvement method of fireproof flame-retardant material

Abstract

The invention discloses a method for improving the electrical safety of a fireproof flame-retardant material. The method is characterized in that an insulating material and a non-insulating fireproof material are compounded. The non-insulating fireproof material has the effect of improving the safety of the non-insulating fireproof material in an electrical use scene.

Description

Technical Field

[0001] The present invention relates to the technical field of fireproof and flame retardant materials, and in particular to a method for improving the electrical safety of fireproof and flame retardant materials. Insulating materials and non-insulating fireproof and flame retardant materials are compounded to construct insulating fireproof and flame retardant composite materials. Background Art

[0002] With the rapid development and application of new energy, safety accidents frequently occur in energy storage power stations and new energy vehicles using lithium batteries. Once a fire or explosion occurs, the fire will spread quickly, leading to a chain reaction, causing fires and explosions in a larger area, which is difficult to extinguish until the entire battery is burned out. Therefore, in terms of safety protection, it faces great technical challenges.

[0003] In the field of battery or electricity, it is very necessary to use fire-retardant materials to minimize the expansion of safety accidents, control the hazards to a local area, and provide safety protection. Mica sheets, aerogels, asbestos paper and expandable graphite flame retardant materials are all effective fire-retardant materials. However, although some fire-retardant materials have very good fire-retardant effects, their insufficient insulation affects their application in battery or electricity-related fields. Therefore, it is necessary to develop a method to improve their electrical safety. Summary of the invention

[0004] The main technical problem solved by the present invention is the insulation improvement of fire-retardant materials. The present invention provides a method for improving the electrical safety of fire-retardant materials, which composites insulating materials onto non-insulating fire-retardant materials, combines the advantages of the two materials, and enables non-insulating fire-retardant materials to be applied in scenarios with electrical safety requirements.

[0005] The insulating material used in the present invention is a polymer film such as PET or PI, which has good insulating properties. The non-insulating fire-retardant material is an expandable flame-retardant material or other fire-retardant materials with poor electrical safety. The composite method includes laminating by heating or the like, or encapsulating the non-insulating fire-retardant material in the insulating material. An electrically safe fire-retardant material can be obtained by composite.

[0006] Advantages and beneficial effects: The present invention can improve the insulation of fire-retardant materials that cannot be used in scenarios with high electrical safety requirements, and can be used in such scenarios by compounding them with insulating materials. The method described in the present invention is applicable to all fire-retardant materials that need to be improved in insulation, so that the composite material has the advantages of good electrical safety and good fire retardancy. Specific implementation cases

[0007] Example 1 The expandable graphite coating is applied on the ceramic fiber paper to form a fire-retardant material with a thickness of 2mm. The PET film is thermally bonded to the surface of the material to increase the insulation withstand voltage value from <50V to >1000V.

[0008] Example 2 The expandable graphite coating is applied on the glass fiber aerogel to form a fire-retardant material with a thickness of 2mm. The PI film is heat-sealed to the surface of the material, which can increase the insulation withstand voltage value from <50V to >1000V.

[0009] Example 3 The expandable graphite coating is applied on the mica sheet to form a 2mm fire-retardant material. The material is packaged in a PET film bag, which can increase the insulation withstand voltage value from <50V to >1000V.

[0010] Example 4 The expandable graphite coating is applied on the ceramic fiber paper to form a fire-retardant material with a thickness of 2mm. The material is encapsulated in a PI film bag, which can increase the insulation withstand voltage value from <50V to >1000V.

Claims

1. A method for improving the insulation of a fire-retardant material, characterized in that: Composited with insulating material and non-insulating fire retardant material.

2. The insulating material according to claim 1, characterized in that Polymer films such as PI or PET are used as insulating materials.

3. The non-insulating fire-retardant material according to claim 1, characterized in that: Its components are expandable flame retardant materials or other fire retardant materials with poor electrical safety.

4. The composite according to claim 1, characterized in that The two materials are bonded together or the fire retardant material is encapsulated in the insulating material.