Heat-conducting, flame-retarding and explosion-proof paint for lamp tube of emergency lamp and preparation method of heat-conducting, flame-retarding and explosion-proof paint

Abstract

The invention discloses heat-conducting, flame-retarding and explosion-proof paint for a lamp tube of an emergency lamp. The heat-conducting, flame-retarding and explosion-proof paint is prepared from the following raw materials in parts by weight: 4 to 8 parts of decabromodiphenyl ethane, 4 to 6 parts of aluminum hydroxide, 3 to 5 parts of white carbon black, 8 to 10 parts of crystal whiskers, 0.5 to 1.5 parts of graphene, 20 to 30 parts of epoxy resin, 4 to 6 parts of a coupling agent, 15 to 25 parts of vinyl silicone oil, 5 to 7 parts of silicon carbide micro-particles, 4 to 6 parts of gamma-aluminum oxide, 10 to 20 parts of liquid rubber, 4 to 6 parts of rare-earth oxide, 5 to 15 parts of a processing auxiliary agent and 25 to 35 parts of a solvent. The heat-conducting, flame-retarding and explosion-proof paint disclosed by the invention has relatively good thermal conductivity, relatively high light transmittance, good flame-retarding property and chemical stability; the paint can be coated on the surface of the lamp tube of the emergency lamp and one layer of protection film is formed after the paint is cured, so that the light emitting efficiency of the lamp tube and the heat dissipation requirements can be ensured and a glass lamp shell is prevented from falling off or bursting at high temperature; meanwhile, a preparation method provided by the invention has the advantages that the cost of the materials is relatively low, the raw materials are easy to obtain and a process is simple, so that the preparation method has relatively high application value and a good application prospect.

Description

technical field [0001] The invention relates to the technical field of lamp materials, in particular to a heat-conducting, flame-retardant and explosion-proof coating for emergency lamp tubes and a preparation method thereof. Background technique [0002] Emergency lights are an indispensable and important component of the fire safety system; emergency lights are mandatory to be installed in public buildings, high-rise buildings, hotels, and crowded places and require regular maintenance. The function of the emergency light is to provide the minimum illumination for the designated safe passage within a specific time when the general lighting in the building cannot work normally due to fire or other unpredictable disasters. Emergency lights can also provide lighting signal signs to help safe evacuation when the general lighting in the building does not work normally, and clearly indicate the direction change of each channel to help trapped people evacuate in an orderly and sa...

AI Technical Summary

Problems solved by technology

Since the light emitted by the LED is direct, it is prone to glare and damages the eyes, which requires us to process the transparent glass lamp tube to achieve the effect of light transmission and opacity; considering the fragility of the glass lamp tube, in order to prevent people from being Scratches and scratches, there are two methods on the market, one is internal coating with oily silicone, which cannot be applied on a large scale due to reasons such as technology, price, and environmental protection; the other is to cover the glass lamp tube with rubber film or plastic film, and the unit price is higher. The process is complicated, and there are currently no effective improvement measures

The above-mentioned oily silicone internal coating scheme is basically unfeasible under the existing environmental protection policy: the price is high and a large amount of toluene or xylene or trimethylbenzene (the country has already banned the use of trimethylbenzene) as diluents is required, which is easy to Flammable and explosive, potentially dangerous; slow drying or high temperature forced drying, high energy consumption and not conducive to continuous mass production

The above-mentioned coating rubber film solution has the disadvantages of: greatly reducing the luminous flux of the lamp (that is, the brightness of the lamp); making the lamp easier to get dirty and difficult to clean; rubber or plastic is easy to turn yellow

Coating a layer of polymer film with poor thermal conductivity on the lamp tube will further increase the thermal resistance, increase the temperature of the filament, and shorten the life of the filament

At the same time, because the LED lamp will generate a lot of heat when it is working, the excessive heat accumulation of the coating layer will cause the danger of fire, and the existing coating layer has poor flame retardancy and cannot effectively prevent the spread of fire in the event of danger.