CN2424899Y

CN2424899Y - Artificial board with antistatic and electromagnetic shielding effect

Info

Publication number: CN2424899Y
Application number: CN 00236177
Authority: CN
Inventors: 朱家琪; 罗朝晖; 黄泽恩
Original assignee: Research Institute of Wood Industry of Chinese Academy of Forestry
Current assignee: Research Institute of Wood Industry of Chinese Academy of Forestry
Priority date: 2000-06-02
Filing date: 2000-06-02
Publication date: 2001-03-28
Anticipated expiration: 2010-06-02

Abstract

The utility model relates to an artificial board, which is an artificial board with antistatic and electromagnetic shielding effect. The utility model comprises two plant fiber cementing layers, a metal plain net is arranged between the two plant fiber cementing layers, and the mesh size of the metal plain net is more than 20 meshes. Therefore, the utility model has the advantages of excellent antistatic electric discharging and electromagnetic shielding efficiency, easy fabrication and low cost.

Description

Have antistatic and wood-based plate electromagnet shield effect

The utility model relates to a kind of wood-based plate, especially refers to the plate that electronic and electrical equipment and machine room are used.

At present, the common electrical magnetic shield panel is an electric conductor, resistivity is extremely low, be subjected to friction surface and do not play electrostatic charge, can be used for shielding and penetrate screen and low frequency electromagnetic field, still, because of resistance too little, be easy to generate electrostatic induction and damage device in electrostatic field, therefore, this common electrical magnetic shield panel does not possess antistatic property; And common anti-static plate does not possess electromagnet shield effect, and in fact, many electronic and electrical equipments need can be antistatic, and cabinet, casing or the machine room plate face of electromagnetic shielding usefulness arranged again.

In view of this, the purpose of this utility model provides a kind of antistatic and wood-based plate electromagnet shield effect of having, and it is to be the plate construction of the more compound metals in basis and non-metallic particle or level with the string, possesses anti-electrostatic discharging and electromagnet shield effect simultaneously.

The purpose of this utility model is achieved in that a kind of antistatic and wood-based plate electromagnet shield effect of having, comprise two-layer string cementing layer, it is characterized in that: a metal plain net is set between two-layer string cementing layer, and the width of mesh of this metal plain net is more than 20 orders; The width of mesh of described metal plain net is between the 40-60 order; Described string cementing layer is mixed by string chip, carbon black granules and adhesive and forms a plate body; Described metal plain net external coating inorganic agent.

Owing to adopt such scheme: not only have good anti-electrostatic discharging and electromagnet shield effect, and make simple, cheap.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 the utility model exemplary embodiments sectional schematic diagram;

Among the figure: 1 string cementing layer, 11 string chips, 12 carbon black granules, 13 adhesive, 2 metal plain nets.

Present embodiment be by two-layer string cementing layer 1 and between metal plain net 2 compacting bonding form, as shown in Figure 1, wherein:

String cementing layer 1 is mixed by string chip 11, carbon black granules 12 and adhesive 13 and forms a plate body, wherein:

String chip 11 can be wood wool, wood-fibred, broken straw or broken rice bar etc.;

Carbon black granules 12 can be high abrasion carbon black, conductive carbon black, furnace black, jet-black and wood-ash black etc.; This carbon black granules 12 plays antisatic additive.

Adhesive 13 can be divided into two classes: when a class is used for string chip 11 for wood wool, wood-fibred, use urea-formaldehyde resin adhesive or modified urea-formaldehyde resin glue and paraffin mixed liquor or phenolic resins, phenol---urea,---formaldehyde resin, isocyanate glue etc.; Another kind of when being used for string chip 11 for broken rice bar, broken straw, use isocyanate glue;

The manufacturing step of string cementing layer 1 is:

Earlier carbon black granules 12 is evenly mixed with string chip 11, then, add different adhesive 13 according to different string chip 11.

Metal plain net 2 can be copper mesh, nickel screen or stainless (steel) wire (the best), and its width of mesh is advisable with the 40-60 order more than 20 orders, 2 electromagnetic shielding action of this metal plain net; In addition, but wire netting surface brushing inorganic agent also glues together metal and wood materials better, and inorganic agent can be coupling agent or polyvinyl acetate emulsion, isocyanate-modified polyvinyl acetate emulsion etc.

Claims

1, a kind of wood-based plate with antistatic and electromagnet shield effect, comprise two-layer string cementing layer (1), it is characterized in that: a metal plain net (2) is set between two-layer string cementing layer (1), and the width of mesh of this metal plain net (2) is more than 20 orders.

2, by the described wood-based plate with antistatic and electromagnet shield effect of claim 1, it is characterized in that: the width of mesh of described metal plain net (2) is between the 40-60 order.

3, by the described wood-based plate with antistatic and electromagnet shield effect of claim 1, it is characterized in that: described string cementing layer (1) is mixed by string chip (11), carbon black granules (12) and adhesive (13) and forms a plate body.

4, by the described wood-based plate of claim 1, it is characterized in that: described metal plain net (2) external coating inorganic agent with antistatic and electromagnet shield effect.