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Composite board for power distribution cabinet

A technology for composite panels and power distribution cabinets, which is applied to electrical equipment shells/cabinets/drawers, electrical components, chassis/boxes/drawer parts, etc., which can solve the problem of high cost, uneven conduction, and inability to form conductive channels and other problems to achieve the effect of avoiding multiple processes, avoiding accumulation of static electricity, and uniform contact

Inactive Publication Date: 2019-03-26
江苏银泰电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems existing in the existing composite materials used for power distribution cabinets are: the processing procedure of the metal mesh used for electric conduction is complicated and the cost is high. Cooling, pickling, water washing, packaging and other procedures can make iron wire, and iron wire must go through welding and other processes before it can be made into barbed wire
Similarly, if barbed wire is added to the composite material without adding other conductive fillers, the part of the composite material that is not in contact with the barbed wire cannot form a conductive channel and is still insulated, so the prior art still has uneven conduction The problem

Method used

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  • Composite board for power distribution cabinet
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: Step 1: Weigh 30 parts of phenolic resin powder, 10 parts of graphite, 5 parts of polyacrylic acid, 7 parts of glass fiber, and 3 parts of urotropine by weight, mix the above raw materials evenly, and place in a vacuum environment Extrude, then heat to 240~245°C, and press for 1.5 hours to obtain a transition layer plate; Step 2: Weigh 10 parts by weight of phenol, 15 parts of formaldehyde, stir well, then slowly add 4 parts of ammonia water, at 60°C Reduce the pressure and condense for 1 hour to obtain a translucent mixed colloid; continue to condense for another 1 hour to obtain a transparent colloid; Step 3: Put the transition layer plate into the plate mold, the area of ​​the mold is slightly larger than the area of ​​the transition layer plate, and the depth of the mold is higher than that of the transition layer Plate thickness, take 5~10 parts of aluminum-doped zinc oxide powder and evenly cover the transition layer plate, take copper wire, place one...

Embodiment 2

[0024] The difference between the second embodiment and the first embodiment is that the silica gel particles with a diameter of 0.5-1 mm are removed from the raw materials in step 5, and finally the finished product C is obtained.

[0025] Refer to the "Test Method for Volume Resistivity and Surface Resistivity of Solid Insulating Materials (GB 1410-89)", the surface resistivity of the transition layer side of the initial product A falls below 10 5 ~10 6 Within the range of Ω·cm, it conforms to the design of the present invention.

[0026] Refer to the "Testing Method for Volume Resistivity and Surface Resistivity of Solid Insulating Materials (GB 1410-89)", wherein sample 4 is a square plate, and electrodes 1, 2, and 3 are all set on the cross-section of sample 4. The actual The measured data is the parallel resistance between the materials of each layer, but since the resistance of other layers except the conductive layer is very large, the influence on the test result is ...

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Abstract

The invention discloses a composite board for a power distribution cabinet. The composite board comprises a transition layer, a conductive layer and an insulation layer arranged in order from the inside to the outside. The conductive layer comprises a conductive powder body and a conductive wire, one end of the conductive wire is electrically connected to the conductive powder body, the other endof the conductive wire is used for grounding or zeroing, the material of the transition layer is a conductive composite material, and the transition layer has a volume resistivity of 104 to 107 Omega*cm. A traditional conductive metal mesh is substituted with the conductive powder body, multiple processes of making the metal mesh are avoided, the contact between the powder body and an antistatic layer is uniform, and local accumulation of static electricity can be avoided.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a composite plate used for a power distribution cabinet. Background technique [0002] The power distribution cabinet is the final equipment of the power distribution system. The power distribution cabinet needs to have a conductive function to shield the magnetic field. The cabinet body must be grounded or connected to zero to prevent electric shock. The openable cabinet door with electrical appliances and the grounding terminal of the cabinet frame should be connected with bare braided copper wires. In the prior art, iron sheets coated with paint are usually used to make power distribution cabinets. In some occasions with special requirements, iron sheets are often not suitable, such as dust-proof, moisture-proof, and explosion-proof occasions. In these cases, composite materials can only be used. Power distribution cabinet, compared with the traditional iron sheet material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K5/02
CPCH05K5/02H05K5/0217
Inventor 林建平鲁声静
Owner 江苏银泰电气科技有限公司
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