When mixing in the field, the rubber molecules of the polyester conveyor belt can form a physical and chemical bond with the particle surface of the active filler, so that a part of the rubber is bonded to the surface of the carbon black particles to form rubber which is insoluble in the organic solvent, that is, Carbon black gel, referred to as belt-bonded rubber, has several possible reasons for its formation. One is that rubber molecules are adsorbed on the surface particles of carbon black by van der Waals force, and the other is that rubber molecules pass through macromolecular radicals and carbon during rubber mixing. The active sites on the surface of the black particles are combined, or the new surface of the carbon black aggregates is activated to react directly with the rubber molecules. The third is that the rubber molecules are entangled in or with the molecules that have been combined with the carbon black particles. Cross-linking, SEMLER conveyor belt manufacturers through multiple experimental data analysis, which is mainly related to the following factors:
(1) Particle size, structure, surface activity and dosage of the rubber packing of the pattern Generally, the particle size, structure and surface activity of the filler pattern rubber band filler with small particle size, large specific surface area, high structure and high activity In general, the particles are small, the specific surface area is large, the structure is high, and the filler with high activity is easy to form a bonded rubber. As the amount of the filler increases, the amount of the combined rubber is also increased, and the particles with coarse particles and low surface activity are added. Hardly producing a combination of rubber;
(2) High-strength conveyor belts, such as natural rubber and other diene rubbers, are prone to chemical reaction with fillers to form bonded rubber, and less active saturated rubbers such as butyl rubber and ethylene propylene rubber are difficult. Producing bonded rubber;
(3) If the mixing time of the mining conveyor belt is long, the amount of bonded rubber is relatively increased, but in the mixing cycle, the initial bonding rubber is formed at a faster rate, and will gradually slow down until it is long. After the time, even the extension of the parking period will tend to be stable. Generally speaking, increasing the temperature of the industrial rubber belt mixing can increase the amount of combined rubber. Therefore, the amount of rubber produced in the high-temperature mixing will be more, and the temperature will be increased. It is very important for promoting the formation of a rubber with a saturated rubber. Therefore, rubber belt manufacturers usually use high temperature for the saturated rubber, and then carry out thermochemical treatment after mixing to increase the amount of high-quality bonded rubber.