High temperature resistant conveyor belt

Abstract

The invention provides a high-temperature resistant conveyer belt which comprises a framework layer and a covering glue layer which covers the surface of the framework layer, wherein the framework layer is made of a metal material; the covering glue layer is mainly made of ethylene propylene diene monomer rubber and chloroprene rubber and is added with a fire retardant agent, trichloroethyl phosphate, a binding agent and a binding improver apart from a main cross-linking agent, an auxiliary cross-linking agent, an activating agent, an anti-aging agent, a reinforcing agent, a dispersing agent and a softening agent, wherein the binding agent comprises phenolic resin and hexakis(methoxymethyl)melamine; and the binding improver comprises maleic anhydride complexing butadiene and liquid natural rubber. The high-temperature resistant conveyer belt provided by the invention can be used at a temperature of 300 DEG C and has good firing bonding performance and firing resistant performance.

Description

technical field [0001] The invention belongs to the technical field of rubber products, in particular to a high-temperature-resistant conveyor belt. Background technique [0002] High temperature resistant conveyor belt, also known as heat resistant conveyor belt, is a special heavy conveyor belt, mainly used for conveying high temperature materials in steel, cement, coke and other industries. [0003] The high temperature resistant conveyor belt is generally composed of a skeleton layer and a covering rubber layer covering the surface of the skeleton layer, wherein the skeleton layer is generally made of heat-resistant materials, such as multi-layer heat-resistant canvas or steel cord core, metal spiral mesh, steel curtain mesh, etc. It is made of metal materials, and the covering rubber layer is generally styrene-butadiene rubber, butyl rubber, ethylene-propylene rubber or EPDM rubber. The high-temperature-resistant conveyor belt with multi-layer heat-resistant canvas as ...

AI Technical Summary

Problems solved by technology

However, in this high-temperature-resistant conveyor belt, the burning resistance of the covering rubber is poor, and the physical and mechanical properties of the covering rubber decline rapidly during the high-temperature conveying process, and aging, embrittlement, and even falling off occur, which is different from the resistance of the skeleton layer. High temperature life mismatch

The Chinese patent document with the publication number CN101921436A discloses a surface covering rubber for high-temperature-resistant and flame-retardant conveyor belts, including 75-100 parts by weight of ethylene-propylene rubber with an ethylene content of 60%-80%, and 1-4 parts by weight of anti-aging agent , 1-3 parts by weight of stearic acid, 5-15 parts by weight of petroleum-based softener, 20-70 parts by weight of reinforcing carbon black, 10-60 parts by weight of high wear-resistant carbon black, 5-8 parts by weight zinc oxide, 1 to 5 parts by weight of magnesium oxide, 15 to 60 parts by weight of magnesium hydroxide, 1 to 50 parts by weight of No. 70 chlorinated paraffin, 1 to 30 parts by weight of ammonium polyphosphate, 1 to 40 parts by weight organic brominated flame retardant, 1-15 parts by weight of zinc borate, 1-20 parts by weight of antimony trioxide, 1-5 parts by weight of dicumyl peroxide, 1-4 parts by weight of cross-linking aid agent and 10 to 15 parts by weight of vulcanized resin, the covering glue provided by the invention has good heat resistance and flame resistance, and can improve the service life of the high temperature resistant conveyor belt. However, in the use environment of 300 ° C, the heat It will reduce the bonding strength between the cover glue and the skeleton layer, which will cause the cover glue to bubble or peel off or fall off