High temperature resistant conveyor belts are generally used in companies to transport materials. They are usually covered with rubber and fiber fabric as the core (the core is generally made of polyester, nylon, polyester canvas, cotton, etc.). Is the overall fabric composition). The fiber fabric of the early high-temperature resistant conveyor belt is cotton fiber. The advantage of cotton fiber is that it is easy to bond with rubber, and its tensile strength is slightly improved when wet. The heat-resistant conveyor belt is a heat-resistant conveyor belt made of multilayer rubber cotton canvas ( Polyester-cotton cloth) or polyester canvas is covered with high-temperature or heat-resistant rubber and bonded together by high-temperature vulcanization. It is suitable for conveying hot coke, cement, molten slag and hot castings below 175℃! The disadvantage is poor corrosion resistance and easy Moldy, the breaking strength is as low as 56 Newtons and it can be broken by pulling force. Therefore, the use of cotton fiber conveyor belts is gradually reduced, replaced by polyester, nylon and other materials.
The original nylon fiber as the core conveyor belt began to be put into use. The strength of nylon fiber is as high as 700N/(mm. layer), and the advantages are water resistance, high temperature resistance, corrosion resistance, fatigue resistance, etc.; the disadvantage is that it is elastic and has a longer elongation. Polyester fiber is a kind of raw material similar to nylon fiber, and its performance is similar to nylon fiber, but its elasticity is less than nylon fiber. When used, the elastic elongation is only half of nylon fiber, so it is more and more popular. The most commonly used rubber varieties for heat-resistant conveyor belt covering rubber are SBR, IIR and EPR. At present, SBR is the most commonly used, but it is only suitable for use below 120 ℃; IIR has better high temperature resistance than SBR, but its process performance is poor, and the price is too high. It is rarely used in China; EPR has both heat resistance and price. Relatively moderate, suitable for the production of heat-resistant conveyor belts.
Application fields of high temperature resistant conveyor belt is mainly used in metallurgy, construction and other industries to transport high-temperature materials such as sinter, coke, cement clinker, etc. The material temperature does not exceed 800℃, and the belt surface temperature does not exceed 220℃. Features: Use EPDM rubber as the covering layer, and use domestic special high-temperature resistant canvas for the skeleton material. The unique formula design solves the key problems of high saturation, poor adhesion and low interlayer adhesion due to the high saturation of the ethylene propylene rubber. . It has the characteristics of light belt body, long life (about 2-4 times) and good heat resistance. High temperature resistant conveyor belts are mainly used for transportation tasks in metallurgy, chemical, cement, coking, steel and other industries. It is suitable for the environment with short conveying distance and small conveying volume.
