CN104175381A - Fiberboard with electromagnetic shielding function and preparation method thereof - Google Patents
Fiberboard with electromagnetic shielding function and preparation method thereof Download PDFInfo
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- CN104175381A CN104175381A CN201410381458.6A CN201410381458A CN104175381A CN 104175381 A CN104175381 A CN 104175381A CN 201410381458 A CN201410381458 A CN 201410381458A CN 104175381 A CN104175381 A CN 104175381A
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Abstract
The invention discloses a fiberboard with an electromagnetic shielding function and belongs to the field of electromagnetic shielding composite materials. The fiberboard is prepared in the way that short carbon fibers and wood fibers are uniformly fixed, then sized and hot-pressed. The preparation method of the fiberboard with the electromagnetic shielding function comprises the following steps: preparing composite fibers through the solution blended process, sizing the composite fibers, dispersing the sized composite fibers, uniformly spreading in a fiberboard, and performing hot-pressing compounding. The invention solves the problem that difficulty exists in uniformly distributing short carbon fibers in the fiberboard, effectively improves the uniform distribution degree of the short carbon fibers, realizes efficient doping of the carbon fibers, and solves the difficult problems that the electromagnetic shielding fiberboard is poor in conduction uniformity and low in electromagnetic shielding efficiency. Besides, dispersion and homogeneous mixing of the wood fibers and the carbon fibers are realized in the same preparation process, the compound technology is simple and the operation is convenient.
Description
Technical field
The present invention relates to a kind of fiberboard with electro-magnetic screen function and preparation method thereof, the fiberboard with electro-magnetic screen function that the method makes can be used for electromagnetic shielding composite material field.
Background technology
Filled-type wood base electro-magnetic screen fiberboard is the electromagnetic shielding composite material being composited by conductive filler and wood fibre.Its performance depends primarily on character, consumption, shape and the distribution thereof of packing material (conduction, magnetic), the selection of combination process etc.The conventional conductive filler of filled-type electromagnetic shielding composite material is graphite, carbon black, metallic fiber etc. at present, while wherein adding conducting particles, need to use the additives such as activating agent, coupling agent, complicated process of preparation, and financial cost is high; Metallic fiber preparation difficulty, cost is higher, is difficult to industrialization and produces.The non-metallic fibers that carbon fiber is a kind of high strength, high-modulus, lightweight and electric conductivity is good, it also has flexibility and machinability, is the comparatively ideal reinforcing material of filled-type electromagnetic shielding composite material.Adopt rational complex technique can make carbon fiber in fiberboard, form a large amount of conductive networks, make the fiberboard with electro-magnetic screen function of excellent performance.
At present, mainly adopt the method for applying glue respectively to prepare filled with carbon fibers type electromagnetic shielding fiberboard both at home and abroad, be about to carbon fiber and wood-fibred and after applying glue, be mixed with again the fiberboard with electro-magnetic screen function respectively.
Wherein, CN 103214865A and CN 102602065A have announced respectively carbon fiber wooden electromagnetic screen material and carbon fiber reinforced wood conductive label panel and preparation method thereof.Above two patents all need carbon fiber and wood-fibred difference applying glue ， Jiao Mao larger, and the utilization rate of adhesive is low.In addition, evenly in the dispersion of carbon fiber and Process of Applying Glue select hypertoxic acetone as the dispersant of chopped carbon fiber, not only improved production cost, and there is harm greatly.Another defect of the method is that applying glue carbon fiber is difficult in fiberboard, be uniformly distributed and form efficient conductive network, and carbon fiber doping efficiency is low, and conduction lack of homogeneity and the capability of electromagnetic shielding of electromagnetic shielding fiberboard are on the low side.Shi Guangwei has also confirmed to exist in filled-type Carbon Fiber-wood Composites material carbon fiber bunchy Distribution Phenomena, and carbon fiber content is higher, and fasciculation is more serious.
Summary of the invention
The object of the invention is, in order to overcome the deficiency of filled with carbon fibers type electromagnetic shielding fiberboard traditional production technique, provides a kind of fiberboard with electro-magnetic screen function and preparation method thereof.The present invention adopts solution blended process to solve chopped carbon fiber and be uniformly distributed a difficult problem in fiberboard, avoided the use of hypertoxic dispersant, realize the efficient doping of carbon fiber, and then improved conduction uniformity and the electromagnet shield effect of filled with carbon fibers type electromagnetic shielding fiberboard.
For achieving the above object, the present invention takes following technical scheme:
A kind of fiberboard with electro-magnetic screen function, its raw material comprises wood-fibred, chopped carbon fiber and adhesive, described wood-fibred first evenly mixes with chopped carbon fiber, after evenly mixing with adhesive again, through mating formation, hot pressing, gummed forms, the weight proportion 100 of described wood-fibred and chopped carbon fiber: 2-50, the quality proportioning of described wood-fibred and adhesive is 100: 5-20;
The described fiberboard with electro-magnetic screen function, the chopped carbon fiber content having described in it is characterized in that in the arbitrary plane of fiberboard of electro-magnetic screen function is 30～400/mm
2, the chopped carbon fiber content in arbitrary cross section is 25～300/mm
2;
The described fiberboard with electro-magnetic screen function, is characterized in that described adhesive is the adhesives such as urea-formaldehyde glue, phenol glue and isocyanate glue;
The described fiberboard with electro-magnetic screen function, is characterized in that described wood-fibred is weedtree fiber.
The present invention also provides a kind of preparation method with the fiberboard of electro-magnetic screen function, comprises the following steps:
1) solution blended process is prepared composite fibre: add solution high speed to be evenly mixed to get composite fibre wood-fibred and chopped carbon fiber;
2) composite fibre applying glue: composite fibre and the full and uniform stirring of adhesive are obtained to applying glue composite fibre;
3) applying glue composite fibre dispersion treatment: applying glue composite fibre is placed in dispersion machine and is fully disperseed;
4) hot pressing of sheet material: the applying glue composite fibre of dispersion evenly mated formation in shaping frame and use hot press hot pressing 4～8min under 140～170 ℃, the condition of 10～15MPa, obtaining having the fiberboard of electro-magnetic screen function after the demoulding.
Described solution blended process refers to chopped carbon fiber and wood-fibred is joined successively and in solution, carry out high speed and evenly mix, and the mixed uniformly time range of high speed is 10～40min.
Described applying glue composite fibre will be placed in dispersion treatment 15～30min in dispersion machine.
The fiberboard tool with electro-magnetic screen function prepared by the present invention has the following advantages:
(1) the present invention adopts solution blended process to prepare composite fibre, has eliminated the harm that in chopped carbon fiber dispersion and Process of Applying Glue, hypertoxic acetone brings, and has simplified raw material treatment process, easy to operate;
(2) the present invention adopts solution blended process to prepare composite fibre, has improved the be uniformly distributed degree of carbon fiber in fiberboard, has realized efficiently mixing of carbon fiber, has improved conduction uniformity and the capability of electromagnetic shielding of fiberboard;
(3) the present invention carries out dispersion treatment by applying glue composite fibre, improves dispersiveness and the applying glue uniformity coefficient of applying glue composite fibre, has improved the utilization rate of adhesive.
The specific embodiment:
Embodiment 1:
Present embodiment is suppressed 10mm chopped carbon fiber and the weedtree fiber heat of mixing fiberboard of the electro-magnetic screen function of getting everything ready, and concrete steps are as follows:
(1) ratio that is 1: 10 by 10mm chopped carbon fiber and weedtree fiber according to mass ratio by solution blended process is placed in variable-speed agitator and fully stirs 20min, obtains equally distributed composite fibre;
(2) composite fibre is placed in in air dry oven, to be dried to moisture content be 8%～12%;
(3) after fully stirring, the ratio that is 1: 10 by isocyanate glue and composite fibre according to mass ratio obtains applying glue composite fibre;
(4) applying glue composite fibre is placed in to the abundant 20min of dispersion in dispersion machine;
(5) the applying glue composite fibre of dispersion is evenly mated formation in shaping frame, with hot press hot pressing 6min under 160 ℃, the condition of 12MPa, after the demoulding, obtaining dimensional parameters is the fiberboard with electro-magnetic screen function of 360mm * 340mm * 3mm.
Specific insulation and the concrete data of electromagnet shield effect of the fiberboard with electro-magnetic screen function prepared by present embodiment are as follows:
Embodiment 2:
Present embodiment is suppressed 10mm chopped carbon fiber and the weedtree fiber heat of mixing fiberboard of the electro-magnetic screen function of getting everything ready, and concrete steps are as follows:
(1) ratio that is 1: 2 by 10mm chopped carbon fiber and weedtree fiber according to mass ratio by solution blended process is placed in variable-speed agitator and fully stirs 30min, obtains equally distributed composite fibre;
(2) composite fibre is placed in in air dry oven, to be dried to moisture content be 8%～12%;
(3) after fully stirring, the ratio that the composite fibre by isocyanate glue and after disperseing is 1: 10 according to mass ratio obtains applying glue composite fibre;
(4) applying glue composite fibre is placed in to the abundant 20min of dispersion in dispersion machine;
(5) the applying glue composite fibre of dispersion is evenly mated formation in shaping frame, with hot press hot pressing 6min under 160 ℃, the condition of 12MPa, after the demoulding, obtaining dimensional parameters is the fiberboard with electro-magnetic screen function of 360mm * 340mm * 3mm.
Specific insulation and the concrete data of electromagnet shield effect of the fiberboard with electro-magnetic screen function prepared by present embodiment are as follows:
Claims (7)
1. a fiberboard with electro-magnetic screen function, its raw material comprises wood-fibred, chopped carbon fiber and adhesive, it is characterized in that described wood-fibred first evenly mixes in solution with chopped carbon fiber, after evenly mixing with adhesive again, through mating formation, hot pressing, gummed forms, the weight proportion 100 of described wood-fibred and chopped carbon fiber: 2-50, the quality proportioning of described wood-fibred and adhesive is 100: 5-20.
2. the fiberboard with electro-magnetic screen function according to claim 1, the chopped carbon fiber content having described in it is characterized in that in the arbitrary plane of fiberboard of electro-magnetic screen function is 30～400/mm
2, the chopped carbon fiber content in arbitrary cross section is 25～300/mm
2.
3. the fiberboard with electro-magnetic screen function according to claim 1, is characterized in that described adhesive is the adhesives such as urea-formaldehyde glue, phenol glue and isocyanate glue.
4. the fiberboard with electro-magnetic screen function according to claim 1, is characterized in that described wood-fibred is weedtree fiber.
5. a preparation method with the fiberboard of electro-magnetic screen function, is characterized in that comprising the following steps:
1) solution blended process is prepared composite fibre: add solution high speed to be evenly mixed to get composite fibre wood-fibred and chopped carbon fiber;
2) composite fibre applying glue: composite fibre and the full and uniform stirring of adhesive are obtained to applying glue composite fibre;
3) applying glue composite fibre dispersion treatment: applying glue composite fibre is placed in dispersion machine and is fully disperseed;
4) hot pressing of sheet material: the applying glue composite fibre of dispersion evenly mated formation in shaping frame and use hot press hot pressing 4～8min under 140～170 ℃, the condition of 10～15MPa, obtaining having the fiberboard of electro-magnetic screen function after the demoulding.
6. the preparation method with the fiberboard of electro-magnetic screen function according to claim 5, it is characterized in that described solution blended process refers to joins chopped carbon fiber and wood-fibred successively and in solution, carries out high speed and evenly mix, and the mixed uniformly time range of high speed is 10～40min.
7. the preparation method with the fiberboard of electro-magnetic screen function according to claim 5, is characterized in that described applying glue composite fibre will be placed in dispersion treatment 15～30min in dispersion machine.
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| CN201410381458.6A CN104175381B (en) | 2014-08-04 | 2014-08-04 | A kind of fibre board with electro-magnetic screen function and preparation method thereof |
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| CN201410381458.6A CN104175381B (en) | 2014-08-04 | 2014-08-04 | A kind of fibre board with electro-magnetic screen function and preparation method thereof |
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| CN104175381A true CN104175381A (en) | 2014-12-03 |
| CN104175381B CN104175381B (en) | 2016-11-16 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104441102A (en) * | 2014-10-20 | 2015-03-25 | 贵州恒力源林业科技有限公司 | Manufacturing method for composite density board |
| CN104985668A (en) * | 2015-06-24 | 2015-10-21 | 南通亚振东方家具有限公司 | Fiber wood with electromagnetic shielding function and preparation method thereof |
| CN105082313A (en) * | 2015-08-05 | 2015-11-25 | 广西大学 | Composite artificial board with electromagnetic shielding function and preparation method of composite artificial board |
| CN105082314A (en) * | 2015-08-05 | 2015-11-25 | 广西大学 | Composite fireboard with electromagnetic shielding function and preparation method thereof |
| CN106166787A (en) * | 2016-07-15 | 2016-11-30 | 志邦厨柜股份有限公司 | A kind of high tenacity Nano graphite aluminium powder electromagnetic shielding medium density fibre board (MDF) and preparation method thereof |
| CN106166785A (en) * | 2016-07-15 | 2016-11-30 | 志邦厨柜股份有限公司 | A kind of environment-friendly high-intensity Nano graphite aluminium powder electromagnetic shielding medium density fibre board (MDF) and preparation method thereof |
| CN106182318A (en) * | 2016-07-15 | 2016-12-07 | 志邦厨柜股份有限公司 | A kind of fire-retardant Nano graphite aluminium powder electromagnetic shielding medium density fibre board (MDF) and preparation method thereof |
| CN106182319A (en) * | 2016-07-15 | 2016-12-07 | 志邦厨柜股份有限公司 | A kind of easily processing graphite nanometer aluminium powder electromagnetic shielding medium density fibre board (MDF) and preparation method thereof |
| CN106182320A (en) * | 2016-07-15 | 2016-12-07 | 志邦厨柜股份有限公司 | A kind of ecological, environmental protective Nano graphite aluminium powder electromagnetic shielding medium density fibre board (MDF) and preparation method thereof |
| CN107553655A (en) * | 2017-08-21 | 2018-01-09 | 安徽旺旺禽业科技有限公司 | A kind of high strength fiberboard with electro-magnetic screen function and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61273902A (en) * | 1985-05-30 | 1986-12-04 | Harada Sangyo:Kk | Electromagnetic wave shielding synthetic wooden plate |
| CN1294959A (en) * | 1999-11-09 | 2001-05-16 | 中国林业科学研究院木材工业研究所 | Manufacture of composite wood board with conducting function |
| CN101170893A (en) * | 2007-11-14 | 2008-04-30 | 中国林业科学研究院木材工业研究所 | A conductive film for electromagnetic shielding and its making method |
| CN101579869A (en) * | 2009-06-19 | 2009-11-18 | 云南永利发林业有限公司 | Antistatic decorated board |
| CN101954664A (en) * | 2010-06-04 | 2011-01-26 | 沈阳巴菲克实业有限公司 | Black grey carbon fiber environmentally-friendly middle-high density fiberboard and manufacturing process thereof |
| CN201824437U (en) * | 2010-10-09 | 2011-05-11 | 东北林业大学 | Reinforced wood fiber board with activated carbon fiber added |
| CN103214865A (en) * | 2013-04-22 | 2013-07-24 | 东北林业大学 | Carbon fibre wood electromagnetic shielding material and preparation method thereof |
-
2014
- 2014-08-04 CN CN201410381458.6A patent/CN104175381B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61273902A (en) * | 1985-05-30 | 1986-12-04 | Harada Sangyo:Kk | Electromagnetic wave shielding synthetic wooden plate |
| CN1294959A (en) * | 1999-11-09 | 2001-05-16 | 中国林业科学研究院木材工业研究所 | Manufacture of composite wood board with conducting function |
| CN101170893A (en) * | 2007-11-14 | 2008-04-30 | 中国林业科学研究院木材工业研究所 | A conductive film for electromagnetic shielding and its making method |
| CN101579869A (en) * | 2009-06-19 | 2009-11-18 | 云南永利发林业有限公司 | Antistatic decorated board |
| CN101954664A (en) * | 2010-06-04 | 2011-01-26 | 沈阳巴菲克实业有限公司 | Black grey carbon fiber environmentally-friendly middle-high density fiberboard and manufacturing process thereof |
| CN201824437U (en) * | 2010-10-09 | 2011-05-11 | 东北林业大学 | Reinforced wood fiber board with activated carbon fiber added |
| CN103214865A (en) * | 2013-04-22 | 2013-07-24 | 东北林业大学 | Carbon fibre wood electromagnetic shielding material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 齐万智: "基于均匀化方法的木碳复合材料动态特性分析", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》, no. 3, 15 March 2014 (2014-03-15) * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104441102A (en) * | 2014-10-20 | 2015-03-25 | 贵州恒力源林业科技有限公司 | Manufacturing method for composite density board |
| CN104985668A (en) * | 2015-06-24 | 2015-10-21 | 南通亚振东方家具有限公司 | Fiber wood with electromagnetic shielding function and preparation method thereof |
| CN105082313A (en) * | 2015-08-05 | 2015-11-25 | 广西大学 | Composite artificial board with electromagnetic shielding function and preparation method of composite artificial board |
| CN105082314A (en) * | 2015-08-05 | 2015-11-25 | 广西大学 | Composite fireboard with electromagnetic shielding function and preparation method thereof |
| CN106166787A (en) * | 2016-07-15 | 2016-11-30 | 志邦厨柜股份有限公司 | A kind of high tenacity Nano graphite aluminium powder electromagnetic shielding medium density fibre board (MDF) and preparation method thereof |
| CN106166785A (en) * | 2016-07-15 | 2016-11-30 | 志邦厨柜股份有限公司 | A kind of environment-friendly high-intensity Nano graphite aluminium powder electromagnetic shielding medium density fibre board (MDF) and preparation method thereof |
| CN106182318A (en) * | 2016-07-15 | 2016-12-07 | 志邦厨柜股份有限公司 | A kind of fire-retardant Nano graphite aluminium powder electromagnetic shielding medium density fibre board (MDF) and preparation method thereof |
| CN106182319A (en) * | 2016-07-15 | 2016-12-07 | 志邦厨柜股份有限公司 | A kind of easily processing graphite nanometer aluminium powder electromagnetic shielding medium density fibre board (MDF) and preparation method thereof |
| CN106182320A (en) * | 2016-07-15 | 2016-12-07 | 志邦厨柜股份有限公司 | A kind of ecological, environmental protective Nano graphite aluminium powder electromagnetic shielding medium density fibre board (MDF) and preparation method thereof |
| CN107553655A (en) * | 2017-08-21 | 2018-01-09 | 安徽旺旺禽业科技有限公司 | A kind of high strength fiberboard with electro-magnetic screen function and preparation method thereof |
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