CN1994696A - Method for producing plywood with electromagnetic screen function - Google Patents
Method for producing plywood with electromagnetic screen function Download PDFInfo
- Publication number
- CN1994696A CN1994696A CN 200710063275 CN200710063275A CN1994696A CN 1994696 A CN1994696 A CN 1994696A CN 200710063275 CN200710063275 CN 200710063275 CN 200710063275 A CN200710063275 A CN 200710063275A CN 1994696 A CN1994696 A CN 1994696A
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- veneer
- plywood
- screen function
- manufacture method
- electromagnetic screen
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention relates to a method for producing electromagnetic shaded adhesive plate, wherein it comprises that: 1, cutting or planning the wood into single plate; 2, flattening the single plate, and drying it in thermal compressor until the water content is 5-7%, improving the flatness; 3, smelting that mixing the powder conductive material with urea-formaldehyde resin or formaldehyde-phenol resin; 4, plating adhesive that coating mixed resin on the face of single plate; 5, shaping blank that layering several single plates; 6, flexibly compressing the plate. The invention via layering conductive material and wood can obtain the adhesive plate with electromagnetic shade function, with low cost and simple process.
Description
Technical field
The present invention relates to a kind of preparation technology with glued board of electro-magnetic screen function.
Background technology
Along with the continuous development and progress of electronics industry, various electronic equipments are widely used, and the electromagnetic pollution that electromagenetic wave radiation causes has become a kind of new public hazards.This electromagnetic pollution meeting harm humans healthy causes ecological deterioration; Disturb the normal operation of electrical equipment, electronic equipment, bring out various accidents, leak the computer secret.Electromagnetic shielding is an effective means of alleviating electromagnetic pollution.Timber or wood based substrate material are applied to furniture, decoration, structural material more and more widely.It is generally acknowledged that timber and pure wood-base fibre and particle panel material belong to the non-conductor of electricity, do not have electromagnet shield effect.
At present, the domestic and international composite wooden material that has occurred having the electromagnetic wave shielding function, the main methods such as chemical plating metal, (cathode) sputtering, stickup thin metal layer (comprising wire netting), high temperature carbonization of using, the technology more complicated is arranged, cost height, secondary pollution, destroy the shortcomings such as native texture of timber itself, the easy oxidation of wire netting contact, conductive capability reduces, and the electromagnet shield effect decay is serious.
Summary of the invention
At the problem of above-mentioned existence, the object of the present invention is to provide a kind of manufacture method of plywood with electromagnetic screen function, this method preparation technology is simple, cheap, also preserves the intensity and the native texture of sheet material simultaneously.
For achieving the above object, the manufacture method of a kind of plywood with electromagnetic screen function of the present invention comprises the steps:
1) timber rotary-cut or slicing become veneer;
2) veneer drying flattens, and veneer is dried to moisture content 5%～7% in hot press, increases the veneer flatness simultaneously;
3) mixing, it is evenly mixed to make Powdered conduction add material and Lauxite or phenolic resins under certain technology;
4) gluing will mix resin and be applied to the Wooden veneer surface;
5) assembly moulding forms laminated construction with the multilayer Wooden veneer;
6) last, flexible thermal is pressed into sheet material.
Further, described conduction is added material and is nickel powder and/or copper powder and/or graphite powder, and the granularity of described nickel powder and/or copper powder is 300～400 orders, 0.5～1 micron of the granularity of described graphite powder.
Further, described hot pressing flattening method is for drying on hot press and flatten veneer, and its technological parameter is 100 ℃ of temperature, and 1 minute time, unit pressure 0.5MPa does not add backing plate.
Further, described mixing method is the water-bath heating, and its technological parameter is a rotating speed: per minute 400 changes temperature: 50～60 ℃, and the time: 15 minutes.
Further, described flexible hot pressing parameters is 120 ℃ of hot plate temperatures, pressing time 1min/mm, it is 1 millimeter heat-resisting silicane rubber plate central authorities that unit pressure 1MPa, slab are sandwiched in thickness, respectively is equipped with the polishing backing plate up and down.
The manufacture method of another kind of plywood with electromagnetic screen function provided by the invention comprises the steps:
1) timber rotary-cut or slicing become veneer;
2) veneer drying flattens, and veneer is dried to moisture content 5%～7% in hot press, increases the veneer flatness simultaneously;
3) gluing is applied to the Wooden veneer surface with Lauxite or phenolic resins;
4) execute conduction and add material, apply fibrous conduction and add material;
5) assembly moulding forms laminated construction with the multilayer Wooden veneer;
6) last, flexible thermal is pressed into sheet material.
Further, described conduction is added material and is stainless steel fibre and/or brass fiber, and length is 3～10 millimeters, and diameter is 30～60 microns.
Further, described hot pressing flattening method is for drying on hot press and flatten veneer, and its technological parameter is 100 ℃ of temperature, and 1 minute time, unit pressure 0.5MPa does not add backing plate.
Further, described flexible hot pressing parameters is 120 ℃ of hot plate temperatures, pressing time 1min/mm, it is 1 millimeter heat-resisting silicane rubber plate central authorities that unit pressure 1MPa, slab are sandwiched in thickness, respectively is equipped with the polishing backing plate up and down.
The present invention adds the compound glued board that can obtain having the electromagnetic wave shielding function of alternate lamination of material and wooden unit by applying conduction, and makes simply, and is cheap, also preserves the intensity and the native texture of sheet material simultaneously.
Description of drawings
Fig. 1 is the embodiment of the invention 1 block diagram.
Fig. 2 is the embodiment of the invention 2 block diagrams.
The specific embodiment
Embodiment 1
As shown in Figure 1, the manufacture method of the glued board of the electromagnetic wave shielding function when to be used for conductive unit be Powdered, its step is as follows:
1) sheet making: promptly timber rotary-cut or slicing are become veneer.
2) veneer drying flattens: veneer is dried to moisture content 5%～7% in hot press, increases the veneer flatness simultaneously, for next step assembly and hot pressing provide advantage, its technological parameter is 100 ℃ of temperature, 1 minute time, unit pressure 0.5MPa does not add backing plate.
3) it is mixing that conduction is added material: comprise granularity 300～400 purpose nickel powders, and granularity 300～400 purpose copper powders, the graphite powder that granularity is 0.5～1 micron, applied amount respectively accounts for 20～50 grams of every square metre of wooden unit.Above-mentioned conduction is added material and phenolic aldehyde or Lauxite, carry out mixingly, add a little ammonium chloride simultaneously as curing agent.Mixing purpose is that powder is evenly distributed in adhesive, and increases the flowability of mixed adhesive, to make things convenient for next step gluing.
4) gluing: will mix adhesive, and be coated with and impose on wooden cell surface.
5) assembly moulding: mixed adhesive forms alternate multilayer laminated structure in wooden unit.
6) be hot pressed into plate: slab is sandwiched in heat-resisting silicane rubber plate central authorities, respectively is equipped with the polishing backing plate up and down, and purpose is that to execute in the slab hot pressing stress distribution even, reduces the compacting defective, and its technological parameter is 120 ℃ of hot plate temperatures, pressing time 1min/mm, unit pressure 1MPa.
The glued board of making as stated above with electromagnetic wave shielding function, its electromagnet shield effect are 20～25 decibels.
Embodiment 2
As shown in Figure 2, the manufacture method of the glued board of the electromagnetic wave shielding function when to be used for conductive unit be fibrous, its step is as follows:
1) sheet making: identical with embodiment 1.
2) veneer drying flattens: identical with embodiment 1.
3) gluing: phenolic aldehyde or Lauxite mix evenly after adding an amount of water and ammonium chloride, are coated with then and impose on wooden cell surface.
4) apply conduction and add material: comprise that length is respectively 3～4 millimeters, 6～7 millimeters, 9～10 millimeters fibrous conductions are added material, and this conduction is added the stainless steel fibre of material for 30 microns of diameters, the brass fiber that diameter is 60 microns (also can be the mixture of the two).Above-mentioned conduction is added the manual wooden cell surface that evenly imposes on gluing of material.
5) assembly moulding: identical with embodiment 1.
6) flexible thermal is pressed into plate: identical with embodiment 1.
The glued board of making as stated above with electromagnetic wave shielding function, its electromagnet shield effect are 25～35 decibels.
In sum, the present invention adds the compound glued board that can obtain having the electromagnetic wave shielding function of alternate lamination of material and wooden unit by applying conduction, and makes simply, and is cheap, also preserves the intensity and the native texture of sheet material simultaneously.
Claims (9)
1, a kind of manufacture method of plywood with electromagnetic screen function is characterized in that, comprises the steps:
1) timber rotary-cut or slicing become veneer;
2) veneer drying flattens, and veneer is dried to moisture content 5%～7% in hot press, increases the veneer flatness simultaneously;
3) mixing, it is evenly mixed to make Powdered conduction add material and Lauxite or phenolic resins under certain technology;
4) gluing will mix resin and be applied to the Wooden veneer surface;
5) assembly moulding forms laminated construction with the multilayer Wooden veneer;
6) last, flexible thermal is pressed into sheet material.
2, the manufacture method of plywood with electromagnetic screen function according to claim 1, it is characterized in that, described conduction is added material and is nickel powder and/or copper powder and/or graphite powder, and the granularity of described nickel powder and/or copper powder is 300～400 orders, 0.5～1 micron of the granularity of described graphite powder.
By the manufacture method of claim 1 or 2 described plywood with electromagnetic screen function, it is characterized in that 3, described hot pressing flattening method is for drying on hot press and flatten veneer, its technological parameter is 100 ℃ of temperature, 1 minute time, unit pressure 0.5MPa does not add backing plate.
4, the manufacture method of plywood with electromagnetic screen function according to claim 3 is characterized in that, described mixing method is the water-bath heating, and its technological parameter is a rotating speed: per minute 400 changes temperature: 50～60 ℃, and the time: 15 minutes.
5, the manufacture method of plywood with electromagnetic screen function according to claim 4, it is characterized in that, described flexible hot pressing parameters is 120 ℃ of hot plate temperatures, pressing time 1min/mm, unit pressure 1MPa, it is 1 millimeter heat-resisting silicane rubber plate central authorities that slab is sandwiched in thickness, respectively is equipped with the polishing backing plate up and down.
6, a kind of manufacture method of plywood with electromagnetic screen function is characterized in that, comprises the steps:
1) timber rotary-cut or slicing become veneer;
2) veneer drying flattens, and veneer is dried to moisture content 5%～7% in hot press, increases the veneer flatness simultaneously;
3) gluing is applied to the Wooden veneer surface with Lauxite or phenolic resins;
4) execute conduction and add material, apply fibrous conduction and add material;
5) assembly moulding forms laminated construction with the multilayer Wooden veneer;
6) last, flexible thermal is pressed into sheet material.
7, the manufacture method of plywood with electromagnetic screen function according to claim 6, it is characterized in that described conduction is added material and is stainless steel fibre and/or brass fiber, length is 3～10 millimeters, diameter is 30～60 microns, and described stainless steel fibre accounts for 10～30 grams of every square metre of wooden unit; Described brass fiber accounts for 20～50 grams of every square metre of wooden unit.
By the manufacture method of claim 6 or 7 described plywood with electromagnetic screen function, it is characterized in that 8, described hot pressing flattening method is for drying on hot press and flatten veneer, its technological parameter is 100 ℃ of temperature, 1 minute time, unit pressure 0.5MPa does not add backing plate.
9, the manufacture method of plywood with electromagnetic screen function according to claim 8, it is characterized in that, described flexible hot pressing parameters is 120 ℃ of hot plate temperatures, pressing time 1min/mm, unit pressure 1 MPa, it is 1 millimeter heat-resisting silicane rubber plate central authorities that slab is sandwiched in thickness, respectively is equipped with the polishing backing plate up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710063275 CN1994696A (en) | 2007-01-05 | 2007-01-05 | Method for producing plywood with electromagnetic screen function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710063275 CN1994696A (en) | 2007-01-05 | 2007-01-05 | Method for producing plywood with electromagnetic screen function |
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| Publication Number | Publication Date |
|---|---|
| CN1994696A true CN1994696A (en) | 2007-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710063275 Pending CN1994696A (en) | 2007-01-05 | 2007-01-05 | Method for producing plywood with electromagnetic screen function |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522375A (en) * | 2013-10-11 | 2014-01-22 | 中国林业科学研究院木材工业研究所 | Method for flattening and drying rotary cut veneer |
| CN103707383A (en) * | 2013-12-19 | 2014-04-09 | 广西大学 | Method for manufacturing composite fiber boards with electromagnetic shielding function |
| CN104690804A (en) * | 2015-02-14 | 2015-06-10 | 广西丰林木业集团股份有限公司 | Manufacturing method for fiberboard with electromagnetic shielding function |
| CN105397893A (en) * | 2015-11-19 | 2016-03-16 | 福建农林大学 | Processing method for anti-electromagnetism-radiated mobile phone shell made of mountain grain wood |
| CN105599392A (en) * | 2016-01-20 | 2016-05-25 | 广西大学 | Plywood with electromagnetic compatibility and manufacturing method thereof |
| CN106863536A (en) * | 2016-09-23 | 2017-06-20 | 镨适保实业股份有限公司 | Cycle wood and forming method thereof |
| CN109366638A (en) * | 2018-10-29 | 2019-02-22 | 赵顺全 | A kind of preparation method of antibacterial electromagnetic masking glued board |
-
2007
- 2007-01-05 CN CN 200710063275 patent/CN1994696A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522375A (en) * | 2013-10-11 | 2014-01-22 | 中国林业科学研究院木材工业研究所 | Method for flattening and drying rotary cut veneer |
| CN103522375B (en) * | 2013-10-11 | 2015-11-25 | 中国林业科学研究院木材工业研究所 | A kind of flattening of rotary cut venner and drying means |
| CN103707383A (en) * | 2013-12-19 | 2014-04-09 | 广西大学 | Method for manufacturing composite fiber boards with electromagnetic shielding function |
| CN104690804A (en) * | 2015-02-14 | 2015-06-10 | 广西丰林木业集团股份有限公司 | Manufacturing method for fiberboard with electromagnetic shielding function |
| CN105397893A (en) * | 2015-11-19 | 2016-03-16 | 福建农林大学 | Processing method for anti-electromagnetism-radiated mobile phone shell made of mountain grain wood |
| CN105599392A (en) * | 2016-01-20 | 2016-05-25 | 广西大学 | Plywood with electromagnetic compatibility and manufacturing method thereof |
| CN105599392B (en) * | 2016-01-20 | 2018-02-06 | 广西大学 | Glued board with Electro Magnetic Compatibility and preparation method thereof |
| CN106863536A (en) * | 2016-09-23 | 2017-06-20 | 镨适保实业股份有限公司 | Cycle wood and forming method thereof |
| CN109366638A (en) * | 2018-10-29 | 2019-02-22 | 赵顺全 | A kind of preparation method of antibacterial electromagnetic masking glued board |
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Open date: 20070711 |