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A kind of manufacture method of polyurethane conductive conveyor belt

A manufacturing method, polyurethane technology, applied in the direction of belt, application, coating, etc., can solve the problems of reducing the strength of the conveyor belt, increasing the manufacturing cost of the conveyor belt, and the production cannot be carried out, so as to simplify the production process, increase the service cycle, and improve production. efficiency effect

Active Publication Date: 2018-07-17
南京东润带业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of preparing the colloid, due to the high viscosity of the colloid, it is difficult to disperse the conductive raw materials evenly in the colloid, which reduces the conductivity of the conveyor belt. In order to improve the conductivity of the conveyor belt, it is necessary to increase the conductivity. This not only increases the manufacturing cost of the conveyor belt, but also reduces the strength of the conveyor belt while increasing the conductive material.
[0004] The existing PU conveyor belt will become harder when the temperature is low, its flex resistance and cushioning protection ability will be greatly reduced, and sometimes brittle fracture will occur, making production impossible

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Drying cloth: drying the base cloth, the base cloth is made of polyester industrial cloth;

[0029] (2) Coating adhesive on the base cloth;

[0030] (3) Coating: coat the polyurethane mixed powder on the glue to form a polyurethane surface layer;

[0031] (4) shaving the polyurethane surface layer;

[0032] The polyurethane surface layer comprises a continuous phase polyurethane matrix, and polyurethane particles dispersed in the polyurethane matrix in a dispersed phase;

[0033] Containing 30wt% of highly conductive polyurethane powder and 70wt% of low conductive polyurethane powder in the polyurethane mixed powder;

[0034] The surface resistance of the highly conductive polyurethane powder is 10 3 Ω, the plasticizing temperature is 250°C, and the particle size is 280-300 mesh;

[0035] The surface resistance of described low conductivity polyurethane powder is 10 8 Ω, the plasticizing temperature is 210°C, and the particle size is 280-300 mesh.

[0036] In ...

Embodiment 2

[0042] (1) Drying cloth: drying the base cloth, the base cloth is made of polyester industrial cloth;

[0043] (2) Coating adhesive on the base cloth;

[0044] (3) Coating: coat the polyurethane mixed powder on the glue to form a polyurethane surface layer;

[0045] (4) Repair the polyurethane surface layer.

[0046] The polyurethane surface layer comprises a continuous phase polyurethane matrix, and polyurethane particles dispersed in the polyurethane matrix in a dispersed phase;

[0047]Containing 35wt% high conductive polyurethane powder and 65wt% low conductive polyurethane powder in the polyurethane mixed powder;

[0048] The surface resistance of the highly conductive polyurethane powder is 10 4 Ω, the plasticizing temperature is 255°C, and the particle size is 320-350 mesh;

[0049] The surface resistance of described low conductivity polyurethane powder is 10 8 Ω, the plasticizing temperature is 200°C, and the particle size is 320-350 mesh.

[0050] In step (1), ...

Embodiment 3

[0056] (1) Drying cloth: drying the base cloth, the base cloth is made of polypropylene industrial cloth;

[0057] (2) Coating adhesive on the base cloth;

[0058] (3) Coating: coat the polyurethane mixed powder on the glue to form a polyurethane surface layer;

[0059] (4) Repair the polyurethane surface layer.

[0060] The polyurethane surface layer comprises a continuous phase polyurethane matrix, and polyurethane particles dispersed in the polyurethane matrix in a dispersed phase;

[0061] Containing 25wt% high conductive polyurethane powder and 75wt% low conductive polyurethane powder in the polyurethane mixed powder;

[0062] The surface resistance of the highly conductive polyurethane powder is 5*10 3 Ω, the plasticizing temperature is 245°C, and the particle size is 300-320 mesh;

[0063] The surface resistance of described low conductivity polyurethane powder is 10 8 Ω, the plasticizing temperature is 205°C, and the particle size is 300-320 mesh.

[0064] In ste...

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Abstract

The invention discloses a manufacturing method of a polyurethane conductive conveying belt. The manufacturing method of the polyurethane conductive conveying belt comprises the following steps: (1) cloth drying: drying base cloth; (2) coating the base cloth with an adhesive; (3) coating: coating glue with polyurethane mixed powder to form a polyurethane surface layer; and (4) trimming the polyurethane surface layer which comprises a polyurethane matrix which is in a continuous phase and polyurethane particles which are in a dispersed phase and are dispersed in the polyurethane matrix. In the manufacturing method of the polyurethane conductive conveying belt, low-conductivity polyurethane powder is softened and is fused to form the continuous phase of the polyurethane surface layer, the original morphology of high-conductivity polyurethane powder is maintained, the high-conductivity polyurethane powder is dispersed in the continuous phase to form a dispersed phase, so that a conveying belt with an island-shaped structure is formed, and the conveying belt has high toughness and buffer protection ability, and can be used in a range of -20 DEG C to 100 DEG C.

Description

technical field [0001] The invention relates to a method for manufacturing a polyurethane conductive conveyor belt. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for the quality of production products, and higher and higher environmental protection requirements for various production equipment and transportation industries, especially in the high-end electronic product industry. In order to meet the production needs, the conveyor belt The application industry is safer and more reliable. [0003] Among the conveyor belts, PU (polyurethane) conveyor belts are one of the major categories. When the PU conveyor belt is running, it will have a certain amount of friction with the frame, thereby generating a certain amount of static electricity. The accumulated electricity will be more and more. When transporting electronic products, it will often cause damage to some electronic products. In severe cases, some ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C41/28B29C41/52B29K75/00B29K503/06B29K507/04B29L29/00
CPCB29C41/28B29C41/52B29K2075/00B29K2503/06B29K2507/04B29L2029/00
Inventor 江文养江文军江琳夏三华
Owner 南京东润带业有限公司