Anti-burning conveyor belt

Abstract

The invention relates to a conveyor belt, and particularly to a prescription and a structure of an anti-burning conveyor belt. The conveyor belt comprises a central framework layer, a working surface cover adhesive layer which is arranged on the periphery of the central framework layer and contacted with a material, as well as a non-working surface cover adhesive layer and a side adhesive layer which are not contacted with the material; and the conveyor belt is characterized in that an anti-burning layer is further arranged on the surface of the working surface cover adhesive layer, and the anti-burning layer is composed of constituents in the following parts by weight: 100 parts of rubber, 8-12 parts of zinc oxide, 2-4 parts of stearic acid, 0.8-1.5 parts of sulphur, 1.5-1.8 parts of TMTD (tetramethyl thiuram disulfide), 2-2.5 parts of DM, 2-4 parts of paraffin, 6.5 parts of the mixture of anti-aging agent MB, 4020 and RD, 12-18 parts of coumarone, 5-10 parts of pine tar, 50-60 parts of wear-resistant carbon black, 10-16 parts of solid chlorinated paraffin, 15-25 parts of aluminium hydroxide, 5-40 parts of intumescent flame retardant, and 5-60 parts of asbestos fibres. Tests indicate that the anti-burning conveyor belt disclosed by the invention is simple in structure, low in material cost, and long in service life.

Description

technical field [0001] The invention relates to a conveyor belt, in particular to the formulation and structure of a burning-resistant conveyor belt. Background technique [0002] Anti-burning conveyor belts are widely used in the transportation of high-temperature materials in many important industrial fields such as metallurgy, casting, coking, building materials, and chemicals. Up to a thousand degrees. The anti-burning conveyor belt is generally composed of the working surface, the non-working surface covering rubber layer, the side rubber layer and the skeleton material layer; the conveyor belt bears the strength not the covering rubber layer, but the skeleton material layer, and the working surface on the skeleton material layer 1. The non-working surface covering adhesive layer protects the skeleton material layer. The commonly used working surface covering adhesive layer has no burning resistance and flame retardancy, so it will be burnt and fall off quickly under h...

AI Technical Summary

Problems solved by technology

The anti-burning conveyor belt is generally composed of the working surface, the non-working surface covering rubber layer, the side rubber layer and the skeleton material layer; the conveyor belt bears the strength not the covering rubber layer, but the skeleton material layer, and the working surface on the skeleton material layer 1. The non-working surface covering adhesive layer protects the skeleton material layer. The commonly used working surface covering adhesive layer has no burning resistance and flame retardancy, so it will be burnt and fall off quickly under high temperature burning, while the skeleton material When the layer loses the protection of the covering rubber layer on the working surface, it has no use value, so once the covering rubber layer on the working surface of the conveyor belt is lost, the conveyor belt will be scrapped

[0003] 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 within 10 yuan per kilogram). Disadvantages of low lifespan