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Aramid fiber framework flame-retardant conveyor belt for coal mines

A fabric skeleton and conveyor belt technology, applied in conveyors, applications, closed-loop items, etc., can solve the problems of insufficient bonding strength between metal skeletons and rubber, easy peeling of skeleton and rubber, and unfavorable long-term use of conveyor belts. Lightening, good safety performance, and the effect of increasing cushioning

Active Publication Date: 2019-08-16
ZHEJIANG FENFEI RUBBER & PLASTIC PROD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, the existing coal mine flame-retardant conveyor belt generally uses a metal skeleton as the skeleton layer to ensure the strength of the conveyor belt. However, due to the insufficient bonding strength between the metal skeleton and the rubber, the skeleton and the rubber are prone to peeling off when the conveyor belt is working. Then, cracks are prone to appear inside the rubber, which is not conducive to the long-term use of the conveyor belt; and if the coal mine flame-retardant conveyor belt uses ordinary cords (cotton cords, polyester cords, etc.) as the skeleton layer, it has the disadvantage of insufficient strength and is not suitable It has been used in the coal mine industry for a long time; and the coal mine flame retardant conveyor belt also needs to have excellent performances such as impact resistance, wear resistance and tear resistance. These conditions make people have various properties of the coal mine flame retardant conveyor belt very demanding

Method used

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  • Aramid fiber framework flame-retardant conveyor belt for coal mines
  • Aramid fiber framework flame-retardant conveyor belt for coal mines
  • Aramid fiber framework flame-retardant conveyor belt for coal mines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1, the flame-retardant conveyor belt with aramid fabric skeleton for coal mines of the present invention includes a belt body 1 made of neoprene; the belt body 1 includes an upper cover layer rubber 11, an A transition rubber layer 12, and B transition rubber layer 13 and lower cover layer rubber 14, the thickness of described upper cover layer rubber 11 is 8mm, the thickness of described lower cover layer rubber 14 is 4mm; The transition rubber layer 12 of described A, B transition rubber layer 13 A skeleton layer 2 is arranged between them; the skeleton layer 2 is composed of a layer of aramid canvas 21 and a dipping layer 22 coated on the outer surface of the aramid canvas 21, and the thickness of the skeleton layer 2 is 4 mm; the upper cover The raw material components of the layer rubber 11 and the lower covering layer rubber 14 contain a flame retardant; the flame retardant is one or more of chlorinated paraffin, antimony oxide, zinc borate, and ammoniu...

Embodiment 2

[0030] Different from Example 1, in this embodiment, the thickness of the upper cover rubber 11 is 12mm, the thickness of the lower cover rubber 14 is 3mm; the thickness of the skeleton layer 2 is 2.5mm; The thickness of the A transition rubber layer 12 is 20% of the thickness of the upper cover layer rubber 11, and the thickness of the B transition rubber layer 13 is 15% of the thickness of the lower cover layer rubber 14; the square meter dry weight of the skeleton layer 2 is 1000g / ㎡; The raw material components of the upper cover layer rubber 11 and the lower cover layer rubber 14 are calculated in parts by weight: 100 parts of neoprene rubber, 2 parts of zinc oxide, 2 parts of magnesium oxide, 4 parts of sulfur, stearin 1 part of acid, 1 part of plasticizer TCP, 3 parts of aromatic oil, 5 parts of antioxidant, 30 parts of carbon black N110, 0.2 parts of nanosphere lubricant, 3 parts of ammonium polyphosphate, 3 parts of chlorinated paraffin, 1.5 parts of antimony oxide, 1...

Embodiment 3

[0032] The thickness of the upper cover rubber 11 is 7mm, the thickness of the lower cover rubber 14 is 5mm; the thickness of the skeleton layer 2 is 3mm; the thickness of the A transition rubber layer 12 is the upper cover rubber 11 thickness 40% of that, the thickness of the B transition rubber layer 13 is 30% of the thickness of the lower cover rubber 14; the square meter dry weight of the skeleton layer 2 is 2500g / ㎡; the upper cover rubber 11 and the lower The raw material components of the cover layer rubber 14 are calculated by weight: 100 parts of neoprene rubber, 4 parts of zinc oxide, 4 parts of magnesium oxide, 6 parts of sulfur, 2 parts of stearic acid, 3 parts of plasticizer TCP, 5 parts of aromatic oil , 7 parts of anti-aging agent, 50 parts of carbon black N110, 0.3 parts of nanosphere lubricant, 5 parts of ammonium polyphosphate, 5 parts of chlorinated paraffin, 2.5 parts of antimony oxide, 2 parts of zinc borate, 3 parts of accelerator TMTD, accelerator DTDM 3 ...

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Abstract

The invention relates to an aramid fiber framework flame-retardant conveying belt for the coal mines. The aramid fiber fabric framework flame-retardant conveying belt comprises a belt body made of chloroprene rubber, wherein the belt body comprises upper covering layer rubber, a transition rubber layer A, a transition rubber layer B and a lower covering layer rubber which are sequentially arrangedfrom outside to inside, the thickness of the upper covering layer rubber is 4-12 mm, and the thickness of the lower covering layer rubber is 3-6 mm. A framework layer is arranged between the transition rubber layer A and the transition rubber layer B, and the framework layer is composed of a layer of aramid canvas and a glue dipping layer wrapping the outer surface of the aramid canvas, with thethickness of the framework layer being 2.5mm-6mm. A flame retardant is contained in raw material components of the upper covering layer rubber and the lower covering layer rubber, and the flame retardant is one or more of chlorinated paraffin, antimony oxide, zinc borate and ammonium polyphosphate. The aramid fiber fabric framework flame-retardant conveyor belt for the coal mines is capable of conveying materials under the conditions of high strength, long distance and large capacity, suitable for severe environments of underground coal mine operation, and has high heat resistance and fireproof performance.

Description

technical field [0001] The invention relates to a rubber conveyor belt, in particular to a fire-resistant conveyor belt with an aramid fabric skeleton used in coal mines. Background technique [0002] Conveyor belt is the main part of belt conveyor, which is widely used in large-scale continuous transportation in coal, mining, metallurgy, chemical industry, construction and transportation and other departments. [0003] my country is a big coal mining country, which makes the demand for underground conveyor belts very large. However, due to the generally poor transportation conditions of coal mines in my country, usually with flammable gases, it is required that the related operations in the mines should not generate sparks to avoid fires. Therefore, the rubber conveyor belt used in coal mine development is required to have better flame retardant properties. [0004] In addition, the existing coal mine flame-retardant conveyor belt generally uses a metal skeleton as the ske...

Claims

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Application Information

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IPC IPC(8): B65G15/38B65G15/34B32B25/02B32B25/04B32B25/16B32B27/02B32B27/34B32B37/02C08L11/00C08L91/00C08L91/06C08K13/02C08K3/22C08K5/09C08K3/38
CPCB32B5/024B32B25/02B32B25/042B32B25/10B32B25/16B32B37/02B32B2038/0076B32B2250/24B32B2250/40B32B2260/021B32B2260/048B32B2262/0269B32B2307/3065B32B2307/554B32B2307/558B32B2433/02B65G15/34B65G15/38C08L11/00C08L91/00C08L91/06C08K13/02C08K3/22C08K5/09C08K3/38
Inventor 余捃晗刘波华郑启航
Owner ZHEJIANG FENFEI RUBBER & PLASTIC PROD CO LTD
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