CN104149154A - Manufacturing method for glue-free electromagnetic shielding fiber board - Google Patents
Manufacturing method for glue-free electromagnetic shielding fiber board Download PDFInfo
- Publication number
- CN104149154A CN104149154A CN201410395413.4A CN201410395413A CN104149154A CN 104149154 A CN104149154 A CN 104149154A CN 201410395413 A CN201410395413 A CN 201410395413A CN 104149154 A CN104149154 A CN 104149154A
- Authority
- CN
- China
- Prior art keywords
- glue
- electromagnetic shielding
- fiber
- fiberboard
- free electromagnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Dry Formation Of Fiberboard And The Like (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a manufacturing method for a glue-free electromagnetic shielding fiber board and belongs to the field of electromagnetic shielding composite materials. The glue-free electromagnetic shielding fiber board is formed by compositing mixed fiber, and the mixed fiber is manufactured by mixing wood fiber and short carbon fiber according to the weight ratio of 100:1-20 with a solution in a thermofiner or a mixer. According to the manufacturing method of the glue-free electromagnetic shielding fiber, the short carbon fiber is directly added into the wood fiber thermofiner or a forming frame, or a solution mixing method is adopted for stirring the wood fiber and the short carbon fiber at a high speed into uniformly-mixed fiber, and then a wet way fiber board method or dry way fiber board working procedures of mixed fiber drying and dispersing, laying, forming, pre-pressing and hot-pressing are respectively adopted for producing the glue-free electromagnetic shielding fiber board. In the hot-pressing working procedure of the glue-free electromagnetic shielding fiber board, perforated boards or net layers need to be placed on the upper portion and the lower portion of a formed board blank. In the manufacturing process of the glue-free electromagnetic shielding fiber board, no adhesive is applied, no poisonous gas including formaldehyde is released, and therefore the glue-free electromagnetic shielding fiber board is environmentally friendly.
Description
Technical field
The invention belongs to the preparation field of electromagnetic shielding composite material, be specifically related to a kind of preparation method of glue-free electromagnetic shielding fiberboard.
Background technology
Filled-type electromagnetic shielding fiberboard is the main wooden electromagnetic screen material by conductive unit and the compound preparation of wood fibre.The performance of such composite depends primarily on kind, consumption, form degree of scatter, combination process of matrix and conductive unit etc.Conventional conductive filler mainly contains 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.In addition,, in order to obtain desirable combination property, must increase the consumption of conductive unit and adhesive.In order to solve this difficult problem, need to, to conductive unit and wood-fibred applying glue respectively, be about to conductive unit and wood-fibred and after applying glue, be mixed with again electromagnetic shielding fiberboard respectively.Wherein, CN 103214865A and CN 102602065A adopt respectively said method to prepare carbon fiber wooden electromagnetic screen material and carbon fiber reinforced wood conductive label panel.Electromagnetic shielding fiberboard Jiao Mao prepared by the method is larger, and carbon fiber doping efficiency is low, makes the electric conductivity of electromagnetic shielding fiberboard and capability of electromagnetic shielding on the low side.
In addition, CN1861905 and CN101086150A have announced respectively the preparation method of non-glue fibre board, they utilize the inherent characteristic of lignocellulose raw material, have prepared the good glue-free middle and higher density fiberboard of combination property under the condition that does not apply any adhesive.Said method has overcome the deficiency of traditional fibre board production technology, has effectively solved the emission problem of the toxic gases such as three waste discharge and formaldehyde, for the preparation of glue-free electromagnetic shielding fiberboard provides Technical Reference.
Summary of the invention
The object of the invention is in order to overcome the deficiency of filled-type electromagnetic shielding fiberboard traditional production technique, and in conjunction with existing non-glue fibre board production technology, provide a kind of preparation method of glue-free electromagnetic shielding fiberboard.The present invention directly adds chopped carbon fiber wood-fibred defibrator or shaping frame that wood-fibred is evenly mixed with chopped carbon fiber, or high-speed stirred in mixer forms even composite fibre by wood-fibred and chopped carbon fiber to adopt solution blended process, then adopt respectively wet-process fiber board method or through composite fibre dry and disperse, mat formation, the dry-process fiberboard production process such as precompressed and hot pressing prepares glue-free electromagnetic shielding fiberboard.
For achieving the above object, the present invention takes following technical scheme:
A kind of preparation method of glue-free electromagnetic shielding fiberboard, according to following two kinds of modes, realize: 1) wet-process fiber board: a) in the fiber defibrator of wet-process fiber board or shaping frame, add chopped carbon fiber and wood-fibred to be evenly mixed and made into composite fibre, b) adopt wet-process fiber board production process to prepare glue-free electromagnetic screen fiberboard; 2) dry-process fiberboard: high speed uniform stirring in mixer forms composite fibre by wood-fibred and chopped carbon fiber (a) to adopt solution blended process; (b) composite fibre is dried and dispersion treatment; (c) composite fibre of dispersion is evenly mated formation and through slab precompressed and the glue-free electromagnetic shielding fiberboard of hot pressing.
The weight proportion 100 of described wood-fibred and chopped carbon fiber: 1-20.
Described wet-process fiber board method refers to chopped carbon fiber and raw material is added and in defibrator, prepare even composite fibre.
Described solution blended process is first chopped carbon fiber to be added high-speed stirred 10～20min in mixer to form dispersed solution, then adds wood-fibred high-speed stirred 30～50min to obtain composite fibre solution.Composite fibre in described dry-process fiberboard method will be carried out pneumatic conveying drying, and the moisture content that makes it is 8%～16%.
The composite fibre of described dry-process fiberboard method will be placed in dispersion treatment 10～30min in dispersion machine.
Described heat pressing process temperature is 180～210 ℃, and hot pressing pressure is 12～16MPa, and hot pressing time is 30～60s/mm.
The specific embodiment:
Embodiment 1:
Present embodiment is by 5mm chopped carbon fiber and the glue-free electromagnetic shielding fiberboard of wood-fibred mixing hot pressing, and concrete steps are as follows:
(1) wood-fibred and chopped carbon fiber are taken to material according to the mass ratio of 100: 1;
(2) chopped carbon fiber taking added in mixer and obtain homodisperse carbon fiber solution with the rotating speed high-speed stirred 15min of 800 turn/min;
(3) wood-fibred taking is joined to the rotating speed high-speed stirred 30min with 800 turn/min in carbon fiber solution and obtain composite fibre solution;
(4) composite fibre is carried out to pneumatic conveying drying processing, the moisture content that makes composite fibre slurry is 8%～16%;
(5) dried composite fibre is placed in to dispersion treatment 30min in dispersion machine and obtains homodisperse composite fibre;
(6) composite fibre of dispersion is evenly mated formation in shaping frame and precompressed, then the slab after precompressed is put into hot press, hot pressing temperature is 180 ℃, hot pressing pressure is 15MPa, hot pressing time is 40s/mm, and after the demoulding, obtaining dimensional parameters is the glue-free electromagnetic shielding fiberboard of 360mm * 340mm * 3mm.
Specific insulation and the concrete data of electromagnet shield effect of glue-free electromagnetic shielding fiberboard prepared by present embodiment are as shown in table 1:
Embodiment 2:
Present embodiment is by 5mm chopped carbon fiber and the glue-free electromagnetic shielding fiberboard of wood-fibred mixing hot pressing, and concrete steps are as follows:
(1) wood-fibred and chopped carbon fiber are taken to material according to the mass ratio of 100: 5;
(2) chopped carbon fiber taking added in mixer and obtain homodisperse carbon fiber solution with the rotating speed high-speed stirred 15min of 800 turn/min;
(3) wood-fibred taking is joined to the rotating speed high-speed stirred 30min with 800 turn/min in carbon fiber solution and obtain composite fibre solution;
(4) composite fibre is carried out to pneumatic conveying drying processing, the moisture content that makes composite fibre slurry is 8%～16%;
(5) dried composite fibre is placed in to dispersion treatment 30min in dispersion machine and obtains homodisperse composite fibre;
(6) composite fibre of dispersion is evenly mated formation in shaping frame and precompressed, then the slab after precompressed is put into hot press, hot pressing temperature is 180 ℃, hot pressing pressure is 15MPa, hot pressing time is 40s/mm, and after demoulding, obtaining dimensional parameters is the glue-free electromagnetic shielding fiberboard of 360mm * 340mm * 3mm.
Specific insulation and the concrete data of electromagnet shield effect of glue-free electromagnetic shielding fiberboard prepared by present embodiment are as shown in table 1:
The specific insulation of the glue-free electromagnetic shielding fiberboard of table 1 and electromagnet shield effect value
Claims (7)
1. the preparation method of a glue-free electromagnetic shielding fiberboard, according to following two kinds of modes, realize: 1) wet-process fiber board: a) in the fiber defibrator of wet-process fiber board or shaping frame, add chopped carbon fiber and wood-fibred to be evenly mixed and made into composite fibre, b) adopt wet-process fiber board production process to prepare glue-free electromagnetic screen fiberboard; 2) dry-process fiberboard: high speed uniform stirring in mixer forms composite fibre by wood-fibred and chopped carbon fiber (a) to adopt solution blended process; (b) composite fibre is dried and dispersion treatment; (c) composite fibre of dispersion is evenly mated formation and through slab precompressed and the glue-free electromagnetic shielding fiberboard of hot pressing.
2. the preparation method of glue-free electromagnetic shielding fiberboard according to claim 1, is characterized in that the weight proportion 100 of described wood-fibred and chopped carbon fiber: 1-20.
3. the preparation method of glue-free electromagnetic shielding fiberboard according to claim 1, is characterized in that described wet-process fiber board method refers to chopped carbon fiber and raw material is added and in defibrator or shaping frame, prepare even composite fibre.
4. the preparation method of glue-free electromagnetic shielding fiberboard according to claim 1, it is characterized in that described solution blended process is first chopped carbon fiber to be added high-speed stirred 10～20min in mixer to form dispersed solution, then adds wood-fibred high-speed stirred 30～50min to obtain composite fibre solution.
5. the preparation method of glue-free electromagnetic shielding fiberboard according to claim 1, is characterized in that the composite fibre of described dry-process fiberboard method will be carried out pneumatic conveying drying processing, and the moisture content that makes it is 8%～16%.
6. the preparation method of glue-free electromagnetic shielding fiberboard according to claim 1, is characterized in that the composite fibre of described dry-process fiberboard method will be placed in dispersion treatment 10～30min in dispersion machine.
7. the preparation method of glue-free electromagnetic shielding fiberboard according to claim 1, is characterized in that described heat pressing process temperature is 180～210 ℃, and hot pressing pressure is 1～6MPa, and hot pressing time is 30～60s/mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410395413.4A CN104149154A (en) | 2014-08-13 | 2014-08-13 | Manufacturing method for glue-free electromagnetic shielding fiber board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410395413.4A CN104149154A (en) | 2014-08-13 | 2014-08-13 | Manufacturing method for glue-free electromagnetic shielding fiber board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104149154A true CN104149154A (en) | 2014-11-19 |
Family
ID=51874868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410395413.4A Pending CN104149154A (en) | 2014-08-13 | 2014-08-13 | Manufacturing method for glue-free electromagnetic shielding fiber board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104149154A (en) |
Cited By (4)
| 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 |
| 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 |
| CN106739234A (en) * | 2016-11-30 | 2017-05-31 | 浙江农林大学 | A kind of non-glue fibre board with electro-magnetic screen function and preparation method thereof |
| CN112589948A (en) * | 2020-11-13 | 2021-04-02 | 江苏逸创新能源科技发展有限公司 | Processing technology of carbon fiber plate |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61293804A (en) * | 1985-06-21 | 1986-12-24 | Iwakuragumi Mokuzai Kk | Manufacture of particle board for shielding electromagnetic wave |
| JPS6458502A (en) * | 1987-08-31 | 1989-03-06 | Norinsuisansho Ringyo Shikenjo | Wooden fiberboard equipped with electromagnetic shield property and preparation thereof |
| JP2001064898A (en) * | 1999-08-23 | 2001-03-13 | Shigeru Murata | Press forming method for granular carbon in which carbon is captured by using pulp fibers as binder |
| 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 |
| CN1861905A (en) * | 2006-03-07 | 2006-11-15 | 浙江林学院 | Mfg. method of non-glue fibre board |
| CN101235613A (en) * | 2008-02-27 | 2008-08-06 | 中南林业科技大学 | Method for preparing glue-free lightweight high-strength fiber board |
| CN201824437U (en) * | 2010-10-09 | 2011-05-11 | 东北林业大学 | Reinforced wood fiber board with activated carbon fiber added |
| CN102602065A (en) * | 2012-03-05 | 2012-07-25 | 东北林业大学 | Chopped carbon fiber reinforced wood functional composite material and preparation method thereof |
| CN103214865A (en) * | 2013-04-22 | 2013-07-24 | 东北林业大学 | Carbon fibre wood electromagnetic shielding material and preparation method thereof |
| CN103231525A (en) * | 2013-04-19 | 2013-08-07 | 苏州佰家丽新材料科技有限公司 | Preparation method for fibreboard |
| CN103707383A (en) * | 2013-12-19 | 2014-04-09 | 广西大学 | Method for manufacturing composite fiber boards with electromagnetic shielding function |
-
2014
- 2014-08-13 CN CN201410395413.4A patent/CN104149154A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61293804A (en) * | 1985-06-21 | 1986-12-24 | Iwakuragumi Mokuzai Kk | Manufacture of particle board for shielding electromagnetic wave |
| JPS6458502A (en) * | 1987-08-31 | 1989-03-06 | Norinsuisansho Ringyo Shikenjo | Wooden fiberboard equipped with electromagnetic shield property and preparation thereof |
| JP2001064898A (en) * | 1999-08-23 | 2001-03-13 | Shigeru Murata | Press forming method for granular carbon in which carbon is captured by using pulp fibers as binder |
| 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 |
| CN1861905A (en) * | 2006-03-07 | 2006-11-15 | 浙江林学院 | Mfg. method of non-glue fibre board |
| CN101235613A (en) * | 2008-02-27 | 2008-08-06 | 中南林业科技大学 | Method for preparing glue-free lightweight high-strength fiber board |
| CN201824437U (en) * | 2010-10-09 | 2011-05-11 | 东北林业大学 | Reinforced wood fiber board with activated carbon fiber added |
| CN102602065A (en) * | 2012-03-05 | 2012-07-25 | 东北林业大学 | Chopped carbon fiber reinforced wood functional composite material and preparation method thereof |
| CN103231525A (en) * | 2013-04-19 | 2013-08-07 | 苏州佰家丽新材料科技有限公司 | Preparation method for fibreboard |
| CN103214865A (en) * | 2013-04-22 | 2013-07-24 | 东北林业大学 | Carbon fibre wood electromagnetic shielding material and preparation method thereof |
| CN103707383A (en) * | 2013-12-19 | 2014-04-09 | 广西大学 | Method for manufacturing composite fiber boards with electromagnetic shielding function |
Cited By (4)
| 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 |
| 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 |
| CN106739234A (en) * | 2016-11-30 | 2017-05-31 | 浙江农林大学 | A kind of non-glue fibre board with electro-magnetic screen function and preparation method thereof |
| CN112589948A (en) * | 2020-11-13 | 2021-04-02 | 江苏逸创新能源科技发展有限公司 | Processing technology of carbon fiber plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104175381B (en) | A kind of fibre board with electro-magnetic screen function and preparation method thereof | |
| CN104690804B (en) | A kind of manufacture method of electro-magnetic screen function fiberboard | |
| CN102179856B (en) | High-intensity shaving board and manufacturing method thereof | |
| CN103214865A (en) | Carbon fibre wood electromagnetic shielding material and preparation method thereof | |
| CN104149154A (en) | Manufacturing method for glue-free electromagnetic shielding fiber board | |
| CN104985668A (en) | Fiber wood with electromagnetic shielding function and preparation method thereof | |
| CN102001121B (en) | Method for producing bark mixed medium-density fiber plate | |
| CN105437327A (en) | Preparing method for dampproof mould-proof low-formaldehyde medium and high density fiberboard | |
| CN102152373B (en) | Zero-carbon high-fiber environment-friendly sheet synthesized by waste circuit board powder and production process thereof | |
| CN101642925A (en) | Urea formaldehyde resin adhesive medium density fiber board utilizing castor bean stalk as raw material | |
| CN103770188A (en) | Straw composite board and production method | |
| CN100503191C (en) | Method for fabricating composite building board from wood based cotton stalk | |
| CN106675063A (en) | Lignocellulose-acrylic acid reinforced waterproof flame-retardant biomass board and preparation method thereof | |
| CN107263667A (en) | A kind of Chinese medicine slag sheet material and preparation method thereof | |
| CN103707381A (en) | Method for manufacturing non-glued bamboo fiber board | |
| CN107471380B (en) | Composite shaving board and preparation method thereof | |
| CN101913185A (en) | Method for manufacturing micron-size long light flake artificial boards | |
| CN103726394A (en) | High-strength carbon fiber shielding paper and preparation method thereof | |
| CN106700593A (en) | Straw and textile waste composite molded part and manufacturing method thereof | |
| CN109648678A (en) | Wood-fibred-coir composite sound-absorbing material and preparation method thereof | |
| CN102030511B (en) | Antimagnetic gypsum board | |
| CN109605536B (en) | High-efficiency heat-conducting high-density fiberboard and manufacturing method thereof | |
| CN102248572A (en) | Method for manufacturing high-strength environmentally-friendly binderless particle board | |
| CN108601318B (en) | It is a kind of with flame retarding function without rubber moulding piezoelectricity magnetic screen plate and preparation method | |
| CN104234374A (en) | Antistatic geothermal floor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141119 |