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Anti-static caster structure, anti-static polyurethane material for producing caster and production method

A polyurethane material, anti-static technology, used in casters, wheels, transportation and packaging, etc., can solve the problems of unstable performance, low braking force, difficult to absorb, etc., to achieve good shock absorption effect, strong braking force, easy molding Effect

Active Publication Date: 2015-04-01
QINGDAO FUSHENGDE PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to make polyurethane materials have antistatic properties, antistatic agents are usually added during synthesis. The hydrophilic groups in the antistatic agent structure absorb moisture in the air to form a conductive layer on the surface of polyurethane, so that the polyurethane material releases static electricity. In the factory or clean room environment, the humidity is 30-50% RH, the antistatic agent is difficult to absorb the moisture in the air, and the performance is unstable. After the antistatic dose is too much, the physical properties of the polyurethane material will be reduced.
[0004] In addition, the traditional caster adopts the spring shock absorption method, which belongs to rigid shock absorption, and the shock absorption effect is not good.
Traditional caster brakes use side brakes, and you need to step on the brake pedal all the time when braking, and the braking force is relatively small

Method used

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  • Anti-static caster structure, anti-static polyurethane material for producing caster and production method
  • Anti-static caster structure, anti-static polyurethane material for producing caster and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 1) Forming the caster rim: use aluminum alloy to form the caster rim;

[0058] 2) Mixing: Add 3kg of organic amine, 1kg of water, 20kg of dimethyl octadecyl hydroxyethyl quaternary ammonium nitrate, 10kg of white carbon black, and 10kg of boron nitride into 30kg of polyol, and stir evenly;

[0059] 3) Caster molding: mix the mixture with 26kg of isocyanate, and cast it into a mold where the caster rim is placed at 50-60°C to form a caster integrally.

[0060] The volume resistivity of the caster is 30 MΩ·cm.

Embodiment 2

[0062] 1) Forming the caster rim: use aluminum alloy to form the caster rim;

[0063] 2) Mixing: Add 3kg of organotin, 1kg of water, 20kg of polyoxyethylene ether, 8g of white carbon black, and 12g of boron nitride into 28kg of polyol, and stir evenly;

[0064] 3) Caster molding: mix the mixture with 28kg of isocyanate, and cast it into a mold where the caster rim is placed at 50-60°C to integrally form the caster.

[0065] The volume resistivity of the caster is 25 MΩ·cm.

Embodiment 3

[0067] 1) Forming the caster rim: use iron to form the caster rim;

[0068] 2) Mixing: Add 5kg of organotin, 1kg of water, 10kg of polyoxyethylene ether, 10g of white carbon black, and 15g of boron nitride into 28kg of polyol, and stir evenly;

[0069] 3) Caster molding: mix the mixture with 31kg of isocyanate, and cast it into a mold where the caster rim is placed at 50-60°C to form a caster integrally.

[0070] The volume resistivity of the caster was 22 MΩ·cm.

[0071] During use, the damping device 3 provides damping performance, and when braking, step on the brake plate 7 with your feet, so that the toothed part 9 of the brake lever 6 is in contact with the caster 11, so that the caster 11 is stationary; when the brake is released, step on it with your feet The brake release plate 8, the toothed portion 9 of the brake plate 6 leaves the caster 11 to make the caster 11 move.

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Abstract

The invention relates to an anti-static caster structure for an electronic factory or a dust-free workshop, an anti-static polyurethane material for producing a caster and a production method. The anti-static caster structure comprises a chassis, a vibration reducing device, a supporting device, a caster device and a brake device, wherein the supporting device comprises a bracket and a bracket protecting cover connector; and the vibration reducing device 3 is arranged in the bracket and is made of an elastic vibration reducing material. The invention has the beneficial effects that 1) the anti-static polyurethane material for producing the caster is modified by adopting an anti-static agent, white carbon black and boron nitride, and due to reasonable matching, the anti-static property and the physical property are maintained simultaneously under low humidity; 2) the vibration reduction of the caster adopts an elastic vibration reducing mode, so that the vibration reducing effect is good; 3) caster brake adopts forward brake, so that the brake force is large; and when in releasing brake, only a brake releasing plate needs to be pedaled, so that convenience is brought in the use process; and 4) the bracket protecting cover connector is an integrated part, and the molding is easy.

Description

technical field [0001] The invention relates to an antistatic caster structure used in electronics factories or dust-free workshops, an antistatic polyurethane material for producing casters and a production method. Background technique [0002] At present, in the electronics industry or dust-free workshop, there is a large amount of static electricity during the working process of the equipment. The static electricity accumulates a large amount of charge and absorbs dust, making it difficult for the equipment to dissipate heat. Moreover, when the charge accumulation reaches a certain amount, it can induce fire and cause an explosion. For some precision instruments and equipment, the generation of static electricity will affect the precision of the equipment and other properties of the equipment, resulting in a decrease in the accuracy of the instrument and equipment and a decrease in response sensitivity. In addition, for some operating beds or hospital beds, if static elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60B33/00C08L75/08C08L75/06C08K3/38C08K3/36C08L71/02C08L71/08C08L71/00C08G18/76C08G18/75C08G18/48C08G18/42
Inventor 李德亮
Owner QINGDAO FUSHENGDE PLASTIC
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