In 2021, our company shipped a 500-meter rubber conveyor belt with a bandwidth of 1200mm to a coal mine in New Zealand for the transmission and transportation of mining materials.

  The conveyor belt is a mechanical device widely used in the industrial field. Its main functions include: material transportation, material lifting, material accumulation, material classification, garbage cleaning, operating safety, and improving efficiency.

  1. Organic compounds: chlorinated paraffin-52.70(containing CI mass fraction of 52%,70%), tetrabromide bisphenol A, perchlorcyclopentadecane, decabromodiphenyl ether, etc. Generally. Br is 2 to 4 times more flame retardant than CI. Phosphorus: ammonium polyphosphate, red phosphorous, phosphate ester, etc. Inorganic compounds: including molybdenum oxide, aluminum hydroxide, antimony oxide, iron oxide, magnesium hydroxide, zinc borate, etc. Organic nitrogen: such as ferrocene.

  2. Flame retardant mechanism: inhibit burning. Conveyor belt manufacturers introduce that halides are formed during the combustion process, including HX, antimony, zinc, and boron. It has the ability to capture the highly reactive groups OH, H that promote the combustion process, thereby inhibiting the combustion process. Phosphorus enhances rubber dehydration and carbonization, does not produce flammable gases, and prevents combustion.

  3. Endothermic：Heating aluminum hydroxide, magnesium hydroxide and zinc borate to precipitate crystal water to decompose and absorb heat, reduce the temperature of the heat source, and inhibit or prevent combustion. Halogen halides formed from halogen/yttrium oxide also melt and evaporate.

  4. Dilution: Combustible gases have their own flammable concentration ranges. If it is lower than the lower limit, the amount of combustible gas is insufficient; if it is higher than the upper limit, there is insufficient oxygen, and the heat of the oxidation reaction is insufficient, and the heat is too large to cause combustion. The HX gas produced by halogen does not burn; crystal water is precipitated by heat such as aluminum hydroxide, magnesium hydroxide or zinc borate.

  5. Superposition to form: HX gas, hafnium halide vapor, halogen-phosphorus compound vapor covering the flame surface and blocking the oxygen heat source. The phosphorus-based reinforced rubber is dehydrated into coke, and the metaphosphoric acid generated participates in the formation of the glassy coke layer. The participation of H

  6. Through the analysis of the flame retardant mechanism, it can be seen that the flame retardant of the rubber conveyor belt is a combination of various flame retardants, exerting their synergistic effect, thereby exerting the flame retardant effect of several flame retardants, rather than simply coating Certain flame retardants. Through extensive testing, halogens, phosphorus and inorganic compounds have good flame retardant effects when used together.