Fabric core laminated flame retardant conveyor belt cover layer rubber and preparation method thereof

A covering layer and conveyor belt technology, which is applied in the field of flame-retardant covering rubber, can solve the problems of low strength, poor processing performance, and difficult processing, and achieve the effects of easy calendering, good flame-retardant performance, and good processing performance

Active Publication Date: 2016-09-14
WUXI BOTON CONVEYOR SOLUTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned flame-retardant rubber materials have their own characteristics and have always played good effects, there are still some problems that cannot be ignored: First, PVC and PVG are generally plastic products. use, but its flexibility is not as good as traditional rubber materials, the conveyor belt has poor troughability and flexibility, it is easy to slip and deviate when used, and its own strength is not high, and its service life is short; secondly, styrene-butadiene rubber is used as the covering rubber material , its flame retardant performance is not ideal, and it is generally used for floor flame retardant, and it needs to be filled with a large amount of flame retardant, resulting in a decrease in mechanical properties; while neoprene is used as the covering rubber material, the material has poor processing performance and is easy to stick to the roller , scorched, difficult to process, and the price of neoprene is relatively high, so it does not have a cost advantage

Method used

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  • Fabric core laminated flame retardant conveyor belt cover layer rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 150g of natural rubber (commercially available 5# standard rubber), 45g of styrene-butadiene rubber (commercially available SBR1502) and 105g of chlorinated polyethylene (commercially available 135A) into the internal mixer or open mixer, and then add the flame retardant in sequence : Chlorinated paraffin 75g, antimony trioxide 15g, ammonium polyphosphate 15g, aluminum hydroxide 30g; metal oxides: nano-zinc oxide 15g, nano-magnesium oxide 9g and stearic acid 3g; antioxidant: 4020 3g, RD 3g; Reinforcing agent: nano-silica 45g, carbon black N115 135g; plasticizer: C5 / C9 copolymer resin 30g; finally add ethylenethiourea (NA-22) 3g and N-cyclohexyl-2-benzothiazolyl Sulfenamide (CZ) 3g, dimorpholine disulfide (DTDM) 6g, vulcanizing agent is sulfur 3g. Mix evenly to obtain a cover layer glue, and then vulcanize the cover layer glue on a vulcanization plate at 155°C for 40 minutes to obtain a finished product, and its properties are shown in Table 1.

Embodiment 2

[0023] Add 105g of natural rubber (commercially available 5# standard rubber), 45g of styrene-butadiene rubber (commercially available SBR1502) and 150g of chlorinated polyethylene (commercially available 135A) into the internal mixer or open mixer, and then add the flame retardant in sequence : chlorinated paraffin 75g, antimony trioxide 15g, ammonium polyphosphate 15g, aluminum hydroxide 30g; activator: nano-zinc oxide 15g, nano-magnesium oxide 9g and stearic acid 3g; antioxidant: 4020 3g, RD 3g; Strong agent: nano-silica 45g, carbon black N115 135g; plasticizer: C5 / C9 copolymer resin 30g; finally add ethylenethiourea (NA-22) 3g and N-cyclohexyl-2-benzothiazolyl Sulfonamide (CZ) 3g, dimorpholine disulfide (DTDM) 6g, vulcanizing agent is sulfur 3g. Mix evenly to obtain a cover layer glue, and then vulcanize the cover layer glue on a vulcanization plate at 155°C for 40 minutes to obtain a finished product, and its properties are shown in Table 1.

Embodiment 3

[0025] In the internal mixer or open mixer, add 75g of natural rubber (commercially available 5# standard rubber), 45g of styrene-butadiene rubber (commercially available SBR1502) and 180g of chlorinated polyethylene (commercially available 135A), and then add flame retardants in sequence : chlorinated paraffin 75g, antimony trioxide 15g, ammonium polyphosphate 15g, aluminum hydroxide 30g; activator: nano-zinc oxide 15g, nano-magnesium oxide 9g and stearic acid 3g; antioxidant: 4020 3g, RD 3g; Strong agent: nano-silica 45g, carbon black N115 135g; plasticizer: C5 / C9 copolymer resin 30g; finally add ethylenethiourea (NA-22) 3g and N-cyclohexyl-2-benzothiazolyl Sulfonamide (CZ) 3g, dimorpholine disulfide (DTDM) 6g, vulcanizing agent is sulfur 3g. Mix evenly to obtain a cover layer glue, and then vulcanize the cover layer glue on a vulcanization plate at 155°C for 40 minutes to obtain a finished product, and its properties are shown in Table 1.

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Abstract

The invention relates to rubber for a fabric core laminated flame-retardant conveyor belt covering layer and a preparation method thereof, belonging to the technical field of flame-retardant covering. The preparation method comprises the following steps: adding chlorinated polyethylene, butadiene styrene rubber and natural rubber into an internal mixer or an open mill; sequentially adding a flame retardant, metal oxides, stearic acid, an anti-aging agent, a reinforcing agent and a plasticizer; and finally, adding a vulcanizing agent and a vulcanizing accelerator, uniformly mixing to obtain covering layer rubber, and vulcanizing on a flat vulcanizing plate, thereby obtaining the product. The chlorinated polyethylene, butadiene styrene rubber and natural rubber serve as a matrix, a high-efficiency flame retardant is filled, and an excellent flame-retardant effect is achieved. Meanwhile, by filling carbon black and silica filler, the mechanical property is greatly improved, and high mechanical property and good flame-retardant effect can be considered simultaneously. The various performances of the covering layer rubber composite material can meet the MT830 standard.

Description

technical field [0001] The invention relates to a fabric core laminated flame retardant conveyor belt cover layer rubber for coal mine underground with chlorinated polyethylene as the main body and a preparation method thereof, which has good processing performance, good flame retardant performance and mechanical strength, and can be used The utility model relates to a laminated flame-retardant conveyor belt covering layer used in underground coal mines, and belongs to the technical field of flame-retardant covering rubber. Background technique [0002] Coal mine fabric laminated flame retardant conveyor belt, as the name suggests, is the main tool for transporting materials in coal mines. Since ordinary rubber conveyor belts are flammable, when encountering a fire or jamming during operation, causing friction and heat generation, the material structure strength of the conveyor belt will drop sharply, and the components will collapse, which will cause a major fire accident a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L9/06C08L23/28C08L91/06C08L57/02C08K13/02C08K3/22C08K3/32C08K5/09C08K3/36C08K3/04
CPCC08K2201/011C08L7/00C08L23/286C08L2201/02C08L2205/035C08L9/06C08L91/06C08L57/02C08K13/02C08K3/2279C08K2003/323C08K2003/2227C08K2003/222C08K2003/2296C08K3/36
Inventor 王也吴建国
Owner WUXI BOTON CONVEYOR SOLUTION CO LTD
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