Heat-insulating flame-retardant sheet and preparation method thereof

Abstract

The invention belongs to the technical field of heat insulation and flame retardance, and discloses a heat-insulating flame-retardant sheet and a preparation method thereof. The heat-insulating flame-retardant sheet comprises a base material layer and a flame-retardant coating sprayed around the base material layer, wherein the base material layer is aerogel felt, and the flame-retardant coating consists of a water-based elastic coating, water-based resin, a flame-retardant, a dispersing agent, a coupling agent and silica powder. The method comprises the preparation steps: taking the raw materials according to the composition of the flame-retardant coating, and uniformly stirring to obtain the flame-retardant coating; blowing to clean the surface of the aerogel felt to obtain a felt body A; and spraying the flame-retardant coating around the felt body A, and drying to obtain the heat-insulating flame-retardant sheet. The flame-retardant coating is sprayed on the outer side of the aerogel felt, so that powder falling off the surface of the aerogel felt is prevented, the flame-retardant performance of the aerogel felt is improved, and the flexibility of the aerogel felt is not influenced.

Description

technical field [0001] The invention belongs to the technical field of heat insulation and flame retardant, and in particular relates to a heat insulation and flame retardant sheet and a preparation method thereof. Background technique [0002] New energy vehicles refer to all other energy vehicles except gasoline and diesel engines. Including fuel cell vehicles, hybrid vehicles, hydrogen energy vehicles and solar vehicles, etc., their exhaust emissions are relatively low. [0003] Since new energy vehicles meet the environmental protection requirements vigorously advocated by the state, their sales are increasing year by year, and their application scope is getting wider and wider. At present, most of the new energy vehicles on the Chinese market are hybrid vehicles and pure electric vehicles, and their power sources mainly include Lithium-ion batteries, Ni-MH batteries, fuel cells, lead-acid batteries, supercapacitors. Since the driving of the car requires a lot of power...

AI Technical Summary

Problems solved by technology

Traditional battery core modules use plastic separators to separate the batteries from each other, which is useless. This is not only heavy but also unable to protect, and it is easy to cause problems such as the dissolution of the separator and fire due to the high temperature of the battery.

The existing protective felt has a simple structure and is easy to deform. Most of them rely on the heat insulation effect of the felt to prevent flames, and cannot meet the relevant standards in the field of new energy stipulated by the state.