Flame-retardant coating material for solar battery backboards and preparation method of coating material

Abstract

The invention discloses a flame-retardant coating material for solar battery backboards. The coating material is composed of the following raw materials in parts by weight: 50 to 100 parts of polyimide, 10 to 40 parts of fluorine resin, 20 to 50 parts of polypropylene resin, 30 to 60 parts of butyl acetate, 5 to 10 parts of fumed titanium dioxide, 2 to 10 parts of hydroxypropyl cellulose, 3 to 15parts of acetylated tributyl citrate, 2 to 10 parts of composite flame-retardant additive, 30 to 60 parts of ferric ferrocyanide, 20 to 50 parts of hexachlorocyclotriphosphazene and 60 to 90 parts ofbonding coupling agent. The flame-retardant grade of the coating material disclosed by the invention achieves a level of VTM-0 grade according to a VTM vertical burning test in the standard of ANSI / UL94-1990, and the coating material has excellent mechanical properties, weather resistance and the like

Description

technical field [0001] The invention relates to the technical field of solar photovoltaic materials, in particular to a flame-retardant coating material used for solar battery backplanes and a preparation method thereof. Background technique [0002] With the development of science and technology and people's continuous pursuit of green and sustainable power generation technology, photovoltaic power generation technology has been rapidly developed and widely used. While photovoltaic modules bring convenience to people, there are also certain potential safety hazards. For example, when outdoor solar cell modules are used to generate electricity under strong sunlight, some cells may be blocked and unable to work due to falling leaves, resulting in The temperature of the shaded part is much higher than that of the unshaded part, so that the temperature is too high and hot spots appear, which affects the normal operation of the solar cell, and even causes the components to burn,...

AI Technical Summary

Problems solved by technology

While photovoltaic modules bring convenience to people, there are also certain potential safety hazards. For example, when outdoor solar cell modules are used to generate electricity under strong sunlight, some cells may be blocked and unable to work due to falling leaves, resulting in The temperature of the shaded part is much higher than that of the unshaded part, so the temperature is too high and hot spots appear, affecting the normal operation of the solar cell, and even burning the components, causing a fire

[0003] As an important part of the photovoltaic module, the solar cell backsheet supports and protects the cell module. However, the solar cell backsheet is mostly made of polymer materials, and the material itself is flammable. If the module burns, the solar cell The materials of each layer of the board are not flame retardant, which will easily cause the fire to get out of control, which will lead to a large amount of property loss and casualties