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Whole-core antiflaming conveyer belt with transition layer and production method thereof

A transitional layer and conveyor belt technology, applied in the direction of conveyors, layered products, transportation and packaging, etc., can solve the problems of high transportation efficiency, small conveying inclination, poor trough formation, etc., to improve production efficiency, prolong service life, The effect of high adhesive strength

Active Publication Date: 2011-02-16
ANHUI ZHONGYI RUBBER BELTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The whole core flame retardant conveyor belt is currently the main tool for coal mine transportation underground. According to MT914-2008 "Coal Mine Fabric Whole Core Flame Retardant Conveyor Belt", there are two types of whole core flame retardant conveyor belt: one is plastic whole core Flame-retardant conveyor belt, referred to as PVC type, is made of the whole belt core dipped in plastic and then coated with a layer of polyvinyl chloride resin on the surface. Its advantages are simple process, low cost, high production efficiency, and flame-retardant performance. Good, but the disadvantages are easy slipping, poor trough formation, small conveying inclination, and low conveying efficiency; the other is the rubber-faced whole-core flame-retardant conveyor belt, referred to as PVG type, which is made of the whole belt core dipped and plasticized, and the surface is resurfaced. It is covered with a layer of flame-retardant rubber. Its advantages are good elasticity, easy trough formation, large conveying inclination, and high transportation efficiency. The disadvantages are poor adhesion between rubber and belt core, easy delamination, foaming, and short service life.
In addition, the thickness of the covering layer of the whole core flame-retardant conveyor belt in the prior art is relatively thin. Generally, the PVG type covering glue is 1.5mm, and the PVC covering glue is 1mm. waste of

Method used

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  • Whole-core antiflaming conveyer belt with transition layer and production method thereof
  • Whole-core antiflaming conveyer belt with transition layer and production method thereof
  • Whole-core antiflaming conveyer belt with transition layer and production method thereof

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Experimental program
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Embodiment 1

[0023] As shown in the drawings, the whole-core flame-retardant conveyor belt with a transition layer according to the present invention includes a skeleton material 1 , a transition layer 2 and a cover layer 3 . Skeleton material 1 is the dense whole of the fabric core after dipping and plasticizing. The core is made of cotton yarn and synthetic fiber (polyester, nylon) and then woven into three or more layers. The overall structure of the fabric; the transition layer 2 is a flame-retardant thermoplastic elastomer; the cover layer 3 is a flame-retardant and antistatic vulcanized rubber compound.

[0024] The production process is as follows: firstly, the whole fabric core is soaked and plasticized into a dense whole to obtain the skeleton material 1; the skeleton material is pasted together with the transition layer by two extruders in a hot state of 170-180°C ; Again, the pasted transition layer and skeleton material are in a hot state of 160-170 ° C, and then the covering l...

Embodiment 2

[0029] Product structure and production technology are with embodiment 1.

[0030] The thermoplastic elastomer is a blend comprising powdered nitrile rubber and polypropylene, and the blend formula is in parts by weight: 50 parts of powdered nitrile rubber, 50 parts of polypropylene, polypropylene malay Anhydride grafting reaction product (PP-g-MA) 5 parts, TDCPP 15 parts, flame retardant active magnesium hydroxide 40 parts, ammonium polyphosphate 30 parts, red phosphorus 10 parts, carbon black 12 parts, anti-aging agent A1 part, anti-aging 1 part of agent D, 4 parts of phenolic resin, and 0.5 part of stannous chloride. The preparation process is: first, polypropylene polypropylene, grafted reaction product with maleic anhydride (PP-g-MA), flame retardant plasticizer, flame retardant, carbon black, anti-aging agent, phenolic resin, stannous chloride After hot mixing and pre-plasticizing in a high-speed kneader, after cooling to room temperature, add powdered nitrile rubber an...

Embodiment 3

[0034] Product structure and production technology are with embodiment 1.

[0035] The thermoplastic elastomer is a blend comprising powdered nitrile rubber and polyvinyl chloride, and the blend formula is in parts by weight: 45 parts of powdered nitrile rubber, 55 parts of polyvinyl chloride, chlorinated 5 parts of paraffin, 10 parts of CDP, 10 parts of antimony trioxide, 10 parts of red phosphorus, 20 parts of zinc borate, 10 parts of decabromodiphenyl ether, 15 parts of carbon black, 5 parts of zinc oxide, 1 part of stearic acid, sulfur 1 part, 1 part of accelerator CZ, 0.5 part of TMTD, 1 part of tribasic lead sulfate, 1 part of dibasic lead phosphite, 1.5 parts of anti-aging agent RD. The preparation process is as follows: first, polyvinyl chloride, flame retardant plasticizer, flame retardant, carbon black, stearic acid, stabilizer, stearic acid, etc. are thermally mixed and preplasticized in a high-speed kneader, and then cooled to room temperature , then add powdered ...

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Abstract

The invention provides a whole-core antiflaming conveyer belt with a transition layer, comprising skeleton material, the transition layer and a covering layer, wherein the skeleton material is a solid entirety which is formed by impregnating and plastifying the whole belt core of textile, the transition layer is antiflaming thermoplastic elastomer, and the covering layer is antiflaming anti-static vulcanized rubber composite. The production method comprises the following steps: two extruders bond the transition layer with the skeleton material, and then the two extruders bond the covering layer with the transition layer. Because the transition layer of the thermoplastic elastomer is added between the whole belt core and the covering layer, the covering layer is tightly bonded with the belt core by the transition layer so as to effectively solve the problems of delaminating and foaming for the rubber surface in the prior art; meanwhile, the thickness of the whole covering glue formed by the covering layer and the transition layer is 6 mm, which is 4 times the prior art, thus prolonging the service life of the antiflaming belt; and in addition, because of the thermoplastic elastomer, the technology of extrusion shaping and dynamic vulcanization can be adopted to improve production efficiency and lower energy consumption.

Description

technical field [0001] The invention relates to a flame-retardant conveyor belt for coal mines, in particular to a fabric whole-core flame-retardant conveyor belt and a production method thereof. Background technique [0002] The whole core flame retardant conveyor belt is currently the main tool for coal mine transportation underground. According to MT914-2008 "Coal Mine Fabric Whole Core Flame Retardant Conveyor Belt", there are two types of whole core flame retardant conveyor belt: one is plastic whole core Flame-retardant conveyor belt, referred to as PVC type, is made of the whole belt core dipped in plastic and then coated with a layer of polyvinyl chloride resin on the surface. Its advantages are simple process, low cost, high production efficiency, and flame-retardant performance. Good, but the disadvantages are easy slipping, poor trough formation, small conveying inclination, and low conveying efficiency; the other is the rubber-faced whole-core flame-retardant con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04B65G15/30C08L23/34B32B7/10C08L23/06C08L23/28C08L27/06C08L9/02C08L23/12
Inventor 宋长江李昌志
Owner ANHUI ZHONGYI RUBBER BELTS
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