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High temperature resistant conveyor belt

A conveyor belt and high-temperature-resistant technology, which is applied in the field of rubber products, can solve the problems of reduced bonding strength, decreased physical and mechanical properties of the covering rubber, and poor burning resistance of the covering rubber, so as to reduce the burning time of flames and flameless burning time, enhanced burning resistance time and burning self-extinguishing performance, good burning adhesion performance and the effect of burning resistance

Active Publication Date: 2011-12-14
YANKUANG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0240] The preparation of embodiment 1 pasting glue

[0241] Add 10kg of EPDM rubber and 4kg of natural rubber into the internal mixer and knead at 130°C for 180s; then add 0.8kg of dicumyl peroxide, 0.2kg of triallyl isocyanurate, 0.1kg of sulfur, 0.8kg zinc oxide, 0.25kg stearic acid, 0.15kgN-isopropyl-N'-phenyl-p-phenylenediamine, 0.15kgN, N'-nickel dibutyl dithiocarbamate, 0.2kg phenolic resin, 0.4 kg hexamethoxymelamine, 0.8kg maleic anhydride complexed butadiene, 0.2kg boroacylated cobalt and 0.3kg calcium stearate, lower the temperature to 100°C and continue mixing for 60s; continue to add 0.7kg C5 petroleum resin, 1.4kg paraffin oil, 1.8kg white carbon black, 4kg carbon black, 0.1kg bis(dimethylthioamino) disulfide, 0.1kg dibenzothiazole disulfide and 0.4kg liquid natural rubber, continue mixing at 100°C 160s, get the adhesive mixture.

Embodiment 2

[0242] The preparation of embodiment 2 framework layer

[0243] The steel curtain mesh of the type BN-RE produced by bekaert (bekaert) company and the glue prepared in Example 1 are sent to the calender for lamination. The temperature of the upper roll of the calender is 80 ° C, and the temperature of the middle roll is 85 ℃, the temperature of the lower roll is 55 ℃, and the skeleton layer with the specification of 300mm×50mm and the structure of glued / steel curtain mesh / glued is obtained.

Embodiment 3

[0244] The preparation of embodiment 3 cover glue

[0245]Add 10kg EPDM rubber and 2kg chloroprene rubber into the internal mixer, knead at 135°C for 180s; then add 0.8kg dicumyl peroxide, 0.2kg triallyl isocyanurate, 0.1kg sulfur , 0.8kg zinc oxide, 0.25kg stearic acid, 0.15kgN-isopropyl-N'-phenyl-p-phenylenediamine, 0.15kgN,N'-dibutyl dithiocarbamate nickel, 1.5kg dioxygen trioxide Antimony, 3kg decabromodiphenyl ether, 0.8kg trichloroethyl phosphate, 0.2kg phenolic resin, 0.4kg hexamethoxymelamine, 0.8kg maleic anhydride complexed butadiene and 0.3kg calcium stearate, cooling Continue mixing for 60s at 100°C; continue to add 0.7kg of C5 petroleum resin, 1.4kg of paraffin oil, 7kg of carbon black and 0.4kg of liquid natural rubber, and continue mixing for 160s at 100°C to obtain a covering rubber mixture.

[0246] Send the covering rubber mixture into a calender to be calendered into sheets. The temperature of the upper roll of the calender is 80°C, the temperature of the m...

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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 ...

Claims

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Application Information

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IPC IPC(8): B65G15/32C08L23/16C08L11/00C08L9/06C08L57/02C08L7/00C08K13/02C08K5/14C08K5/3492C08K3/22C08K5/18C08K3/04C09J123/16C09J107/00C09J109/06
Inventor 孙作义谢艳霞孙桂美王飞黄孝庭汪光亮苏峥齐永波
Owner YANKUANG GRP CO LTD
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