All-directional conductive foam and producing method thereof

A technology of conductive foam and production method, which is applied in the direction of electrical components, magnetic field/electric field shielding, liquid chemical plating, etc., can solve the problems of difficult restoration and poor elasticity, and achieve high cost performance, excellent elasticity and softness, good The effect of conductivity and shielding effect

Active Publication Date: 2009-05-13
ZHEJIANG SAINTYEAR ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the conductive foam currently on the market still has some defects, such as poor elasticity, and it is difficult to return to its original state after compression.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The base material of the conductive foam in this example is sheet-shaped high-elastic PU-based foam sponge, which is covered with breathable mesh cloth. The thickness of the bonded foam is 5mm, and the surface of the conductive foam is sequentially There are electroless copper plating layer, electroplating nickel layer and resin protective layer.

[0042] The production method of the all-round conductive foam of this example comprises the following steps:

[0043] 1) Raw material preparation, cut the PU-based foam sponge into sheets, and stick the outside of each piece of foam with a breathable mesh cloth, and the thickness of the bonded foam is 5mm;

[0044] 2) Clean, remove dust and debris;

[0045] 3) Sensitization and activation, palladium chloride and water-based polyurethane with surfactant JFC are formulated into a catalytic slurry, the foam of step 2) is placed in the catalytic slurry for padding, at a temperature of 150 ° C, baked for 15 Minutes to form a ver...

Embodiment 2

[0068] The base material of the conductive foam of this example selects highly elastic sponge mainly based on polyether, and its production method includes the following steps:

[0069] 1) Raw material preparation, the base material sponge is cut into sheets, and the outside of each piece of foam is bonded with a breathable mesh cloth, and the thickness of the bonded foam is 1mm;

[0070] 2) Clean, remove dust and debris;

[0071] 3) Sensitization and activation, prepare palladium acetate and acrylic resin with surfactant JFC to prepare a catalytic slurry, put the foam in step 2) into the catalytic slurry for padding, and bake at a temperature of 100°C for 10 Minutes to form a very thin metal catalytic layer on the surface of the foam;

[0072] 4) strengthening, putting the foam in step 3) into a formaldehyde solution with a concentration of 35% and soaking to strengthen the surface layer structure of the foam;

[0073] 5) Electroless copper plating, first prepare the chemic...

Embodiment 3

[0094] The base material of this example conductive foam selects the foaming sponge based on polyether polyol and polyurethane, and its production method comprises the following steps;

[0095] 1) Raw material preparation, the base material is polyether polyol and polyurethane-based foamed sponge cut into sheets, and the outside of each piece of foam is bonded with a breathable mesh cloth, and the thickness of the bonded foam is 10mm;

[0096] 2) Clean, remove dust and debris;

[0097] 3) Sensitization and activation, palladium chloride and water-based polyurethane combined with surfactant JFC are formulated into a catalytic slurry, the foam of step 2) is placed in the catalytic slurry for padding, and at a temperature of 200° C., baked for 20 Minutes to form a very thin metal catalytic layer on the surface of the foam;

[0098] 4) strengthening, the foam of step 3) is put into concentration and is soaked in the formaldehyde solution of 45%, strengthens foam surface layer str...

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Abstract

The present invention relates to unidirectional conductive foam and a manufacture method thereof. The technical problem to be solved through the invention is to provide unidirectional conductive foam and a manufacture method, and the conductive foam produced in the way described in the invention has excellent compressibility and softness, can guarantee good conductive contact area with excellent electromagnetic shielding performance. The technical solution is as following: unidirectional conductive foam characterized in that substrate of the conductive foam is flake high elastic foaming sponge with polyester, polyether or PET as its main components; wrap the unidirectional conductive foam with breathable mesh cloth and the thickness of wrapped foam is between 1mm to 10mm; chemical plating copper layer, electroplating nickel layer and resin protective layer are provided from inside to outside in series. The invention can be used in producing electromagnetic shielding material in housing, industrial and military device and instruments.

Description

technical field [0001] The invention relates to a high polymer of surface metallized sponge material with high conductivity and shielding effect and a production method thereof, in particular to an all-round conductive foam and a production method thereof. It is suitable for making electromagnetic shielding materials for household, industrial and military equipment and instruments. Background technique [0002] While high-tech electrical products, such as mobile phones, computers and televisions, bring convenience and enjoyment to people, the problem of electromagnetic radiation is also becoming more and more serious. Electromagnetic radiation pollution has been recognized as the fourth largest public hazard after air pollution, water pollution and noise pollution. It has been proved by medical research that electromagnetic radiation can have three effects on organisms: thermal effect, non-thermal effect and cumulative effect. These effects can cause different degrees of ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00C08J7/04C08L67/00C08L71/00C08L67/02C23C18/40C23C18/28C25D3/12
Inventor 高坚生田海玉
Owner ZHEJIANG SAINTYEAR ELECTRONICS TECH
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