Adhesive tape products are mainly divided into two categories, conveyor belt and transmission belt. The conveyor with ordinary fabric core conveyor belt, steel cord conveyor belt, flame retardant conveyor belt, heat resistant conveyor belt, etc. A common V belt transmission, automotive V belt, synchronous belt and so on. Although all kinds of conveyor belt skeleton structure materials and different requirements and conditions of use rubber is different, but all without exception use large amounts of carbon black or other inorganic filler as the filler agent. Carbon Black N550
1. The common conveyor belt of rubber covered by glue, rubber buffer, cloth wipe glue layer of three layer.
1)Cover rubber, that is, surface sizing, used in direct contact with the impact of the conveyed material, the material, wear and microorganism erosion and aging effect, thus requirements cover adhesive has good tensile strength (mpa) of 18 or higher and abrasion resistance (abrasion quantity 0.8 cm3/1.61 km or less), ageing resistance, resistance to erosion. In addition, it also requires good process properties such as viscosity. Cover glue used usually is given priority to with natural rubber or rubber with just the right amount of styrene butadiene rubber, rubber content from 50% to 50%. Vulcanization system using common sulfur curing system, which can play a good physical and mechanical properties of rubber. Often selects high wear-resistant carbon black reinforcing filler system, even the super wear-resistant carbon black, the dosage of 40-50 copies of pure gel, so can ensure that cover the requirements of high strength and wear resistance of the adhesive.
2) Buffer layer rubber covered in rubber and belt between the core layer, to increase the bonding strength, and the impact of the conveying material absorption and dispersion, buffer role. The layer to rubber has good adhesiveness, high elasticity, small heating, cooling and process performance is good. Is generally selected raw rubber natural rubber and butadiene rubber and butadiene rubber was relatively smooth, heat dissipation is good. With low sulfur vulcanization system cooperate in order to improve the adhesion of rubber and cloth layer. Reinforcing filler system often selects high wear-resistant carbon black and soft carbon black, such as with a reinforcing carbon black and used, but the dosage of carbon black, unfavorable and overmuch, can decrease the rubber hardness, and improve the vulcanized rubber elasticity. Pigment Carbon Black
3) Cloth layer brush glue (wipe cloth glue) will take the core is the main purpose of canvas layer glue into a whole, requirements to the core material has good adhesiveness and fatigue resistance, and should have enough plasticity and scorch resistance. Rubber is given priority to with natural rubber, but with nitrile rubber, rubber content is in commonly 50%. Vulcanization system selects the general sulphur vulcanization system. Choose carbon black reinforcing agent, can choose soft carbon black completely, such as gm, half reinforcing carbon black, carbon black dosage is unfavorable also high, about 10% less. Reduce the dosage of carbon black, and use soft carbon black, the gel content increased, the plastic material not only has good elasticity, softness and good permeability, viscosity increases. In addition, can be appropriately increased and petroleum resin, coumarone resin softener is more conducive to increase the adhesion between tape and cloth layer.