CN103193436A - Veneer with shielding performance - Google Patents
Veneer with shielding performance Download PDFInfo
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- CN103193436A CN103193436A CN2013101241903A CN201310124190A CN103193436A CN 103193436 A CN103193436 A CN 103193436A CN 2013101241903 A CN2013101241903 A CN 2013101241903A CN 201310124190 A CN201310124190 A CN 201310124190A CN 103193436 A CN103193436 A CN 103193436A
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Abstract
The invention discloses a partition board. The partition board is characterized by comprising the following raw materials in proportion by weight: 27-29 parts of kieselguhr, 14-16 parts of cement, 10-12 parts of glass microsphere, 3-5 parts of ardealite, 9-11 parts of glass fiber, 7-9 parts of nanometer graphite, 0.5 part of polyvinyl alcohol binding agent, 0.5-1.5 parts of silane coupling agent, and 21-23 parts of water. The preparation method comprises the following steps: (1) pre-treating a glass microsphere particle, (2) debonding the glass fiber, (3) preparing a slurry, (4) making sheet by using a beater-addition process, (5) pressurizing for dehydration to obtain a blank, (6) cutting the blank, (7) maintaining the cut blank by using high-temperature steam, wherein vacuumization is carried out before a still kettle supplies the steam, and the vacuumization is controlled to make a (-0.05)-(-0.06)MPa negative pressure within 30min, (8) drying, and (9) sanding the board surface. The manufactured partition board disclosed by the invention has the characteristics of high strength and good shielding performance.
Description
Technical field
The present invention relates to a kind of facing plate, particularly a kind of facing plate and preparation method that shielding properties is arranged.
Background technology
Glass microsphere is white powdery, and wall thickness is about 1～2 μ m, and main component is SiO
2, specific inductivity and the air of glass microsphere are close, are extraordinary electromagnetic wave transparent materials, and the glass microsphere filled composite materials can be equivalent to the unicellular structure absorbing material.When hertzian wave incides when propagating in these holes, reflection and scattering just can take place in each closed pore, cause electromagnetic power loss.In addition, when hertzian wave incides adjacent holes by a closed pore, at hole wall direction phase change, interfering, also is a major reason of its energy decrement.Hole wall between each closed pore is equivalent to one and inhales the ripple layer thickness, and 1/4 of wavelength the time, the matrix material that glass microsphere is filled becomes the mode of resonance absorbing material when its wall thickness is propagated therein less than hertzian wave.
Summary of the invention
Technical problem to be solved by this invention provides a kind of facing plate and preparation method that shielding properties is arranged.
For this reason, provided by the invention have the raw material weight proportioning of the facing plate of shielding properties to be: 27 parts～29 parts in diatomite, 14 parts～16 parts of cement, 10 parts～12 parts of glass microspheres, 3～5 parts of phosphogypsums, 9 parts～11 parts in glass fibre, 8 parts of nano-graphites, 0.5 part of polyvinyl alcohol adhesive, 0.5 part～1.5 parts of silane coupling agents, 21 parts～23 parts in water.
The diatomite fineness is more than 200 orders, and cement adopts 32.5 grades of ordinary Portland cements, and phosphogypsum adopts the waste material of industrial discharge, and the glass microsphere grain diameter is 70 μ m, and glass fibre length is 10mm.
The present invention has carried out pre-treatment to glass microsphere in manufacture craft, after glass microsphere surface coating layer of conductive film, increased the dielectric loss of matrix material, can obviously improve the absorbing property of matrix material.
Making step of the present invention comprises:
(1) pre-treatment glass microsphere particle
With binding agent polyvinyl alcohol adhesive dilute with water, after waiting to stir, add the glass microsphere particle and the silane coupling agent that cleaned, put into planetary stirring machine and stir 2～3min, treat that the glass microsphere particle surface adds phosphogypsum after wetted fully more successively, put into planetary stirring machine and stir 3min, stirring velocity is 30～40r/min, forms component one slip.
(2) glass fibre of loosening
All glass fibre are put into stirrer, add water and loosen, fiber degree of loosening is 95%.
Time used when glass fibre degree of loosening reaches 95% left and right sides is considered as the time of should loosening, determines that by testing the time of loosening is 10～12min.
(3) make slip
Diatomite, cement, nano-graphite and remaining water mixed stir, churning time is 5min, stirring velocity is 20～30r/min; Add glass fibre again and stir, churning time is 3min, and stirring velocity is 30～40r/min; Add component one slip again and mix stirring, churning time is 4～5min, and stirring velocity is 30～40r/min, forms slurry.
(4) copy and get making sheet
Slip is delivered to and is copied the machine wet end of getting and copy and get moulding.
(5) pressurizing and dehydrating becomes base
Plane hydropress moulding pressure is 8～10MPa, to increase the slab density, improves sheet material respectively to intensity.
(6) cut base
The slab of making is stacking after cutting vertical and horizontal burr, and cutting pressure is 30M Pa.
(7) high-temperature vapour maintenance
For make base substrate everywhere hydrothermal synthesis reaction reach unanimity, autoclave should vacuumize before sending vapour.Most air is discharged from the still of back because vacuumize, the heat exchange of steam and base substrate improves greatly, saturated vapo(u)r can be inhaled into the base substrate center soon, whole base substrate temperature is risen rapidly, and keep basic uniformity, also basically identical of hydrothermal synthesis reaction is conducive to improve the sheet material bulk strength so everywhere.Vacuumize and be controlled to be 30min and be evacuated to-0.05～-the 0.06MPa negative pressure.
The steam-cured dolly that is placed with straight sheet pile sent into carry out steam press maintenance in the autoclave.Temperature is 125 ℃, and temperature rise speed is not more than 15 ℃/h, avoids causing the slab aliquation.Pressure is 0.9MPa～1MPa, keeps 10h under this pressure and temperature.
Slab enters curing kilns, and along with kiln temperature improves, the calcium oxide of constantly separating out in the slab and the silicon oxide in the iron tailings interact, and generate hard and stable holder shellfish mullite crystal, make slab have very high strength.The material plate exists complicated hydration reaction in curing age.At the initial stage of maintenance, because the jelling structure end that silicate cement hydration produces is completed into, material internal has the path of a lot of perforations to give ion with the favorable conductive environment.Along with the development of hydration process, water molecules is absorbed by hydration reaction gradually and produces OH
-And crystal water, jelling structure constantly develops.Because the jelling structure that reduces gradually and constantly develop of ionic concn is to the blocking-up of conductive path, the conductivity of material reduces gradually.After hydration process was abundant more, the material internal jelling structure had approached fully and has been shaped, and the concentration of dissociated ion is more stable, thereby the conductivity of material is settled out.
(8) oven dry
The oven dry of sheet material drying machine, water ratio is lower than 10%.
(9) plate facing sand light
The plate face carries out getting product after the single face sanding through grinder.
The glass microsphere particle diameter is also influential to the screen effect, and test shows that the glass microsphere particle diameter increases back low frequency range screen effect and decreases, and the high frequency region screen is imitated obviously and descended.Find that from a large amount of tests the glass microsphere particle diameter is the antimagnetic better performances of material plate of 70 μ m.
The glass microsphere volume will make the wave resistance of composite material surface and freeboard be complementary, and reaches the purpose that makes hertzian wave incide material internal to greatest extent.Table 1 is the influence that the glass microsphere volume is imitated screen, and table 1 shows that the glass microsphere volume is 10～12 parts the antimagnetic better performances of material plate.The glass microsphere volume is the significant parameter that influences material plate microwave attenuation performance.After the glass microsphere volume increased, material plate void content reduced, and the electromagnetic wave attenuation coefficient of porous material can improve, if but void content is too low, can bring material surface wave resistance and freeboard mismatch problem.When void content was reduced to certain value, wave resistance and the freeboard of porous material surface were not complementary, and hertzian wave is increased in the reflection of material surface, did not reach and incided the purpose that the material internal decay absorbs.
The influence that table 1 glass microsphere volume is imitated screen
Table 2 is the influence that nano-graphite is imitated screen.The mixing of nano-graphite makes eddy current that electromagnetism produces because of loss lose with the form of heat energy, but when nano-graphite microplate content surpasses 8 parts, because agglomeration, nano-graphite, glass bead composite inside has formed One's name is legion and volume is compared the long-pending group of big many conductions with the addition material particulate, thereby the conductive capability of system has faint increase, but the raising along with the system specific conductivity, it is more difficult that polarization takes place in material intralamellar part permeable material hertzian wave, thereby reduced the ability of microscopic eddies generation absorption loss, so the continuation increase of nano-graphite content can not make the capability of electromagnetic shielding of material plate improve, even the trend of reduction is arranged.Test-results shows the antimagnetic better performances of material plate when nano-graphite is 8 parts.
The influence that table 2 nano-graphite is imitated screen
The present invention has the characteristics of intensity height, advantages of good shielding performance.
Embodiment
The raw material weight proportion is in the present embodiment: 28 parts in diatomite, 15 parts of cement, 11 parts of glass microspheres, 4 parts of phosphogypsums, 10 parts in glass fibre, 8 parts of nano-graphites, 0.5 part of polyvinyl alcohol adhesive, 1 part of silane coupling agent, 22.5 parts in water.
The diatomite fineness is more than 200 orders, and cement adopts 32.5 grades of ordinary Portland cements, and phosphogypsum adopts the waste material of industrial discharge, and the glass microsphere grain diameter is 70 μ m, and glass fibre length is 10mm.
Making step comprises:
(1) pre-treatment glass microsphere particle
With binding agent polyvinyl alcohol adhesive dilute with water, after waiting to stir, add the glass microsphere particle and the silane coupling agent that cleaned, put into planetary stirring machine and stir 2～3min, treat that the glass microsphere particle surface adds phosphogypsum after wetted fully more successively, put into planetary stirring machine and stir 3min, stirring velocity is 30～40r/min, forms component one slip.
(2) glass fibre of loosening
All glass fibre are put into stirrer, add water and loosen, glass fibre degree of loosening is 95%, and the time of loosening is 10～12min.
(3) make slip
With diatomite, cement, nano-graphite and remaining water add mix stir, churning time is 5min, stirring velocity is 20～30r/min; Add glass fibre again and stir, churning time is 3min, and stirring velocity is 30～40r/min; Add component one slip again and mix stirring, churning time is 4～5min, and stirring velocity is 30～40r/min, forms slurry.
(4) copy and get making sheet
Slip is delivered to and is copied the machine wet end of getting and copy and get moulding.
(5) pressurizing and dehydrating becomes base
Plane hydropress moulding pressure is 8～10MPa, to increase the slab density, improves sheet material respectively to intensity.
(6) cut base
The slab of making is stacking after cutting vertical and horizontal burr, and cutting pressure is 30M Pa.
(7) high-temperature vapour maintenance
Autoclave should vacuumize before sending vapour, vacuumize to be controlled to be 30min and to be evacuated to-0.05～-the 0.06MPa negative pressure.
The steam-cured dolly that is placed with straight sheet pile sent into carry out steam press maintenance in the autoclave.Temperature is 125 ℃, and temperature rise speed is not more than 15 ℃/h, avoids causing the slab aliquation.Pressure is 0.9MPa～1MPa, keeps 10h under this pressure and temperature.
(8) oven dry
The oven dry of sheet material drying machine, water ratio is lower than 10%.
(9) plate facing sand light
The plate face carries out getting product after the single face sanding through grinder.
Claims (3)
1. facing plate that shielding properties is arranged, it is characterized in that the raw material weight proportioning is as follows: 27 parts～29 parts in diatomite, 14 parts～16 parts of cement, 10 parts～12 parts of glass microspheres, 3～5 parts of phosphogypsums, 9 parts～11 parts in glass fibre, 7 parts～9 parts of nano-graphites, 0.5 part of polyvinyl alcohol adhesive, 0.5 part～1.5 parts of silane coupling agents, 21 parts～23 parts in water;
The diatomite fineness is more than 200 orders, and cement adopts 32.5 grades of ordinary Portland cements, and phosphogypsum adopts the waste material of industrial discharge, and the glass microsphere grain diameter is 70 μ m, and glass fibre length is 10mm.
2. the facing plate that shielding properties is arranged according to claim 1 is characterized in that making step comprises:
(1) pre-treatment glass microsphere particle
With binding agent polyvinyl alcohol adhesive dilute with water, after waiting to stir, add the glass microsphere particle and the silane coupling agent that cleaned, put into planetary stirring machine and stir 2～3min, treat that the glass microsphere particle surface adds phosphogypsum after wetted fully more successively, put into planetary stirring machine and stir 3min, stirring velocity is 30～40r/min, forms component one slip;
(2) glass fibre of loosening
All glass fibre are put into stirrer, add water and loosen, glass fibre degree of loosening is 95%, and the time of loosening is 10～12min;
(3) make slip
With diatomite, cement, nano-graphite and remaining water add mix stir, churning time is 5min, stirring velocity is 20～30r/min; Add glass fibre again and stir, churning time is 3min, and stirring velocity is 30～40r/min; Add component one slip again and mix stirring, churning time is 4～5min, and stirring velocity is 30～40r/min, forms slurry;
(4) copy and get making sheet
Slip is delivered to and is copied the machine wet end of getting and copy and get moulding;
(5) pressurizing and dehydrating becomes base
Plane hydropress moulding pressure is 8～10MPa, to increase the slab density, improves sheet material respectively to intensity;
(6) cut base
The slab of making is stacking after cutting vertical and horizontal burr, and cutting pressure is 30M Pa;
(7) high-temperature vapour maintenance
Autoclave should vacuumize before sending vapour, vacuumize to be controlled to be 30min and to be evacuated to-0.05～-the 0.06MPa negative pressure;
The steam-cured dolly that is placed with straight sheet pile sent into carry out steam press maintenance in the autoclave; Temperature is 125 ℃, and temperature rise speed is not more than 15 ℃/h; Pressure is 0.9MPa～1MPa, keeps 10h under this pressure and temperature;
(8) oven dry
The oven dry of sheet material drying machine, water ratio is lower than 10%;
(9) plate facing sand light
The plate face carries out getting product after the single face sanding through grinder.
3. the facing plate that shielding properties is arranged according to claim 1, it is characterized in that optimum raw material weight proportioning is as follows: 28 parts in diatomite, 15 parts of cement, 11 parts of glass microspheres, 4 parts of phosphogypsums, 10 parts in glass fibre, 8 parts of nano-graphites, 0.5 part of polyvinyl alcohol adhesive, 1 part of silane coupling agent, 22.5 parts in water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101241903A CN103193436A (en) | 2013-03-21 | 2013-03-21 | Veneer with shielding performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101241903A CN103193436A (en) | 2013-03-21 | 2013-03-21 | Veneer with shielding performance |
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| CN103193436A true CN103193436A (en) | 2013-07-10 |
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| CN2013101241903A Pending CN103193436A (en) | 2013-03-21 | 2013-03-21 | Veneer with shielding performance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310872A (en) * | 2014-09-27 | 2015-01-28 | 安徽省中坤元新型建材有限公司 | A light thermally-insulating waterproof partition plate and a manufacturing method thereof |
| CN104845044A (en) * | 2015-04-29 | 2015-08-19 | 合肥思锐新材料科技有限公司 | Coated wave-absorbing material prepared from nano-graphite powder and preparation method of coated wave-absorbing material |
| RU2568207C1 (en) * | 2014-10-27 | 2015-11-10 | федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Волгоградский государственный архитектурно-строительный университет" (ВолгГАСУ) | Cellular fibre-concrete mix |
| CN107324688A (en) * | 2017-07-18 | 2017-11-07 | 合肥峰腾节能科技有限公司 | One kind inhales ripple breathable environment-protective moulding and preparation method thereof |
| CN113668757A (en) * | 2021-08-31 | 2021-11-19 | 贵州贵安新区中兴泰建材有限公司 | Phosphogypsum composite high-crystal ceiling |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838131A (en) * | 2010-05-25 | 2010-09-22 | 陈耀强 | Dynamic hot water reaction hard microporous fiber calcium silicate board and manufacturing method thereof |
| CN102211907A (en) * | 2011-03-03 | 2011-10-12 | 朱奎 | Gypsum plate capable of resisting electromagnetic radiation |
-
2013
- 2013-03-21 CN CN2013101241903A patent/CN103193436A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838131A (en) * | 2010-05-25 | 2010-09-22 | 陈耀强 | Dynamic hot water reaction hard microporous fiber calcium silicate board and manufacturing method thereof |
| CN102211907A (en) * | 2011-03-03 | 2011-10-12 | 朱奎 | Gypsum plate capable of resisting electromagnetic radiation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310872A (en) * | 2014-09-27 | 2015-01-28 | 安徽省中坤元新型建材有限公司 | A light thermally-insulating waterproof partition plate and a manufacturing method thereof |
| RU2568207C1 (en) * | 2014-10-27 | 2015-11-10 | федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Волгоградский государственный архитектурно-строительный университет" (ВолгГАСУ) | Cellular fibre-concrete mix |
| CN104845044A (en) * | 2015-04-29 | 2015-08-19 | 合肥思锐新材料科技有限公司 | Coated wave-absorbing material prepared from nano-graphite powder and preparation method of coated wave-absorbing material |
| CN107324688A (en) * | 2017-07-18 | 2017-11-07 | 合肥峰腾节能科技有限公司 | One kind inhales ripple breathable environment-protective moulding and preparation method thereof |
| CN113668757A (en) * | 2021-08-31 | 2021-11-19 | 贵州贵安新区中兴泰建材有限公司 | Phosphogypsum composite high-crystal ceiling |
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Application publication date: 20130710 |