Improved heat-resistant conveyer belt

Abstract

The invention discloses an improved heat-resistant conveyer belt, which is prepared from the following raw materials in parts by weight: 22-42 parts of ethylene propylene terpolymer, 11-16 parts of calcium carbonate, 7-9 parts of terpene resin, 2-8 parts of sulphur, 3-9 parts of peroxide, 7-14 parts of coumarone, 11-16 parts of heavy oil, 5-8 parts of magnesium oxide, 6-10 parts of pine tar, 22-32 parts of carbon black, 5-10 parts of solid chlorinated paraffin, 7-13 parts of aluminium hydroxide, 6-10 parts of dioctyl phthalate, 2-4 parts of stearic acid, 9-14 parts of asbestos fiber, 25-35 parts of natural rubber, 15-20 parts of chlorinated polyethylene, 4-8 parts of zinc oxide, 5-10 parts of aromatic oil, 5-8 parts of an accelerant NOBS and 3-7 parts of magnesium oxide. The improved heat-resistant conveyer belt disclosed by the invention is low in material cost, long in service life, excellent in heat resistance and ageing resistance, and high in tensile strength.

Description

Technical field [0001] The invention relates to the technical field of rubber materials, in particular to an improved heat-resistant conveyor belt. Background technique [0002] Conveyor belt is currently the main tool for transporting coal underground in coal mines. Conveyor belt is made of fabric and covered with a layer of rubber. Its advantages are good elasticity, easy groove formation, large conveying inclination and high transportation efficiency. The functions of existing conveyor belts are not specific enough to meet the specific needs of certain industries. Although the prior art has added general flame retardants such as chlorinated paraffin and aluminum hydroxide and organic fibers to the formulation in order to increase the anti-burning ability of the working surface covering rubber layer, the organic fibers have a low softening point and are combustible. Its resistance to burning is insufficient, and it is easy to burn and damage at high temperatures. The temperatu...

AI Technical Summary

Problems solved by technology

The function of the existing conveyor belt is not specific enough to meet the specific needs of certain industries

Although in the prior art, general-purpose flame retardants such as chlorinated paraffin and aluminum hydroxide and organic fibers are additionally added to the formula in order to increase the anti-burning ability of the covering adhesive layer of the working surface, the softening point of the organic fibers is relatively low and has a flammable Its resistance to burning is insufficient, and it is easy to burn and damage at high temperatures, and the temperature is quickly transmitted to the inside of the tape, which greatly reduces the adhesion between the covering adhesive layer and the skeleton material layer on the working surface, and under high-strength flexures, Large cracks appear in the covering glue layer of the working surface, which eventually leads to early peeling off of the covering glue on the working surface, causing the conveyor belt to be scrapped in advance

Although the adhesive layer covering the working surface of the prior art has a certain anti-burning ability, it is still insufficient, and the cost is relatively high (generally chemical fiber is 30 yuan per kilogram, aramid fiber is more expensive, and asbestos is only less than 10 yuan per kilogram). Disadvantages of low life