CN102211907A - Gypsum plate capable of resisting electromagnetic radiation - Google Patents

Gypsum plate capable of resisting electromagnetic radiation Download PDF

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Publication number
CN102211907A
CN102211907A CN2011100583410A CN201110058341A CN102211907A CN 102211907 A CN102211907 A CN 102211907A CN 2011100583410 A CN2011100583410 A CN 2011100583410A CN 201110058341 A CN201110058341 A CN 201110058341A CN 102211907 A CN102211907 A CN 102211907A
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China
Prior art keywords
parts
gypsum
electromagnetic radiation
calcium
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Application number
CN2011100583410A
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Chinese (zh)
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CN102211907B (en
Inventor
朱奎
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Tianjin Li Chuan Construction Engineering Co., Ltd.
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朱奎
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Priority to CN2011100583410A priority Critical patent/CN102211907B/en
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Publication of CN102211907B publication Critical patent/CN102211907B/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

The invention discloses a gypsum plate capable of resisting electromagnetic radiation. The gypsum plate is characterized by comprising the following raw materials in parts by weight: 35-37 parts of gelatinizer high-strength gypsum, 14-16 parts of calcium borate, 2-3 parts of carbon powder, 0.2 part of poval binder, 2.5 parts of carboxymethylcellulose, 8-9 parts of silicon ash and 35-37 parts of water. The gypsum plate capable of resisting electromagnetic radiation has the advantages of good wave absorption effect, environmental friendliness, low price and durability.

Description

The anti-electromagnetic radiation plasterboard
Technical field
The present invention relates to building material field, particularly the anti-electromagnetic radiation plasterboard.
Background technology
Along with the development of science and technology and electronic industry, the application of various electronicss is increasing, and electromagenetic wave radiation has become a kind of new social effects of pollution.The electromagnetic interference that electromagenetic wave radiation causes not only can influence the normal operation of various electronicss, and to healthy harm is arranged also.According to estimates, whole world electronic electric equipment is because electromagnetic interference breaks down, and the financial loss that causes every year is up to 500,000,000 dollars.Scientific research confirms, the people is in for a long time that physical and mental health will be subjected to grievous injury in the electromagenetic wave radiation environment.The strong electromagnetic wave radiation of broadcast television launching tower at present, near the electromagnetic radiation pollution city electrician, the medical radio-frequency equipment, the electromagenetic wave radiation of mobile telephone etc. has caused people's extensive concern.Therefore, the high-performance anti-electromagnetic radiation material of exploitation practicality is more and more important.
Summary of the invention
At the deficiencies in the prior art, the object of the present invention is to provide a kind of anti-electromagnetic radiation plasterboard.
Proportioning raw materials of the present invention is as follows: the jelling agent high strength gypsum: 35～37 parts; Lime borate: 14～16 parts; Carbon dust: 2～3 parts; Polyvinyl alcohol adhesive: 0.2 part; Carboxymethyl cellulose: 2.5 parts; Silicon ash: 8～9 parts; Water: 35～37 parts.
Optimum proportioning raw materials is as follows: jelling agent high strength gypsum: 36 parts; Lime borate: 15 parts; Carbon dust: 2 parts; Polyvinyl alcohol adhesive: 0.2 part; Carboxymethyl cellulose: 2.5 parts; Silicon ash: 8 parts; Water: 36.3 parts.
Making step of the present invention comprises:
(1) levigate lime borate
Adopt ball milling respectively that lime borate is levigate, particle diameter is less than 75 μ m.
(2) add carbon dust
The carbon dust particle diameter is 0.1～0.5mm.
(3) add binding agent
Add polyvinyl alcohol adhesive, die forming under 40MPa is then through 100 ℃ of oven dry.
(4) make six calcium borides
Carry out sintering behind the oven dry 4h under the condition of vacuum, sintering temperature is 1950K, and soaking time is 30min, makes six calcium borides.
(5) levigate six calcium borides
Adopt ball milling that six calcium borides are levigate, particle diameter is controlled to be 100～150 μ m.
(6) configuration dispersant solution
Add carboxymethyl cellulose in 50% total water amount, water temp is 50～60 ℃.
(7) mix system gypsum and six calcium borides
Gypsum and six calcium borides are mixed, adopt intermittent type to control automatically and stir instrument stirring 3min, speed is 20～30r/min, adds 50% total water amount then, improves rotating speed, and speed is 50～60r/min, and churning time is 3～5min.
(8) in gypsum and six calcium boride mixed solutions, add dispersant solution and silicon ash successively, put into planetary gypsum glue sand agitator and stir 3～5min.
(9) moulding
The material for preparing is joined mould, and forming method adopts compression moulding, and forming pressure adopts 12MPa.
The present invention has following characteristics:
(1) wave-absorbing effect is good: the present invention's admixture electrical loss and magnetic loss material in gypsum is formulated, reaches the purpose that improves the plasterboard anti-electromagnetic radiation by the designing impedance matching of electromagnetic-wave absorbent, the adjustment of electromagnetic parameter etc.
(2) feature of environmental protection: the present invention is a kind of absorption-type material, and incident electromagnetic wave is absorbed in gypsum structure surface or inside, electromagnetic energy is converted into other forms of waste of energy falls.
(3) cheap: the starting material wide material sources that magneticmedium and dielectric medium adopted that the present invention uses, cheap.
(4) weather resistance: the electromagnetic-wave absorbent chemically reactive that the present invention selects for use is low, not with gypsum generation chemical reaction, and all is wrapped in by gypsum slurry, does not contact with oxidizing mediums such as air, has higher chemical stability.
Embodiment
The present embodiment proportioning raw materials is as follows: the jelling agent high strength gypsum: 36 parts; Lime borate: 15 parts; Carbon dust: 2 parts; Polyvinyl alcohol adhesive: 0.2 part; Carboxymethyl cellulose: 2.5 parts; Silicon ash: 8 parts; Water: 36.3 parts.
Industrial waste lime borate main component is boric anhydride and calcium oxide, boric anhydride and calcium oxide and carbon dust at high temperature can generate six calcium borides and carbon monoxide, synthesizing variation of temperature of six calcium borides is very responsive, and the scope relative narrower of synthesis temperature is higher than or is lower than certain temperature range and all can not synthesize.Through overtesting, sintering temperature is 1950K, and the chemical reaction when soaking time is 30min is for best.
Silicon ash volume is below 6 parts the time, and is little to the plasterboard resistivity effects; But when volume was 8～9 parts, resistivity sharply rose.Mainly be because the silicon ash has very high reactive behavior, can react that the gypsum plate body mesoporosity and the aqueous solution are reduced, and conductive capability descends with the hydrated product of gypsum.In addition, when silicon ash volume was 8 parts, plasterboard ultimate compression strength was the highest, but silicon ash volume continues to increase ultimate compression strength decline.After mainly mixing plasterboard because of the silicon ash, can be filled in well in the gypsum space, make the plasterboard system closely knit, in addition, it also can form stable hydrated product gel, and test-results shows that the plasterboard material ultimate compression strength of silica flour when mixing 8 parts can improve about 35%.When the silicon ash surpassed 10 parts, plasterboard fragility increased, and the ultimate compression strength of plasterboard is descended.The integrated silicon ash is to the test-results of plasterboard material effectiveness of shielding and intensity effect, the best when silicon ash volume is 8～9 parts.
Under certain condition of molding, the variation of water cement ratio will cause the variation of plasterboard porosity, and the size of porosity directly influences the measurement result of resistivity, and promptly porosity and resistivity are proportional.So in the ascending change procedure of water cement ratio, water cement ratio can influence the flowability of compound, the plasterboard hole takes the lead in reducing the back and increases, and the resistivity of plasterboard also presents corresponding variation tendency.Test card open fire volume is that 35～37 parts resistivity is less.
Making step of the present invention comprises:
(1) levigate lime borate
Adopt ball milling respectively that lime borate is levigate, particle diameter is less than 75 μ m.
(2) add carbon dust
The carbon dust particle diameter is 0.1～0.5mm.
(3) add binding agent
Add polyvinyl alcohol adhesive, die forming under 40MPa is then through 100 ℃ of oven dry.
(4) make six calcium borides
Carry out sintering behind the oven dry 4h under the condition of vacuum, sintering temperature is 1950K, and soaking time is 30min, makes six calcium borides.
(5) levigate six calcium borides
Adopt ball milling that six calcium borides are levigate, particle diameter is controlled to be 100～150 μ m.
(6) configuration dispersant solution
Add carboxymethyl cellulose in 50% total water amount, water temp is 50～60 ℃.
(7) mix system gypsum and six calcium borides
Gypsum and six calcium borides are mixed, adopt intermittent type to control automatically and stir instrument stirring 3min, speed is 20～30r/min, adds 50% total water amount then, improves rotating speed, and speed is 50～60r/min, and churning time is 3～5min.
The present embodiment stirring technique adopts mixes system gypsum and six calcium borides earlier, adds the dry mixing technology of mixing water again and compares with the wet-mixing technology that directly adds water at gypsum and six calcium borides, helps the uniform distribution of six calcium borides.
(8) in gypsum and six calcium boride mixed solutions, add dispersant solution and silicon ash successively, put into planetary gypsum glue sand agitator and stir 3～5min.
(9) moulding
The material for preparing is joined mould, and forming method adopts compression moulding, and forming pressure adopts 12MPa.
Closely knit forming pressure can influence the resistivity of plasterboard.Forming pressure is high more, and plasterboard is more closely knit, and porosity is little, thereby electroconductibility is better; Pressure can strengthen the conjugation of gypsum and six calcium borides to " compression " effect of compound, thereby has improved the electroconductibility of plasterboard.Test shows that other forming pressures were minimum relatively for plasterboard resistivity when forming pressure was 12MPa.
Plasterboard among the embodiment is tested, and two indexs of the ultimate compression strength of the equal plasterboard of test-results and resistivity all reach the ideal effect.

Claims (3)

1. the anti-electromagnetic radiation plasterboard is characterized in that proportioning raw materials is as follows: the jelling agent high strength gypsum: 35～37 parts; Lime borate: 14～16 parts; Carbon dust: 2～3 parts; Polyvinyl alcohol adhesive: 0.2 part; Carboxymethyl cellulose: 2.5 parts; Silicon ash: 8～9 parts; Water: 35～37 parts.
2. anti-electromagnetic radiation plasterboard according to claim 1 is characterized in that optimum proportioning raw materials is as follows: the jelling agent high strength gypsum: 36 parts; Lime borate: 15 parts; Carbon dust: 2 parts; Polyvinyl alcohol adhesive: 0.2 part; Carboxymethyl cellulose: 2.5 parts; Silicon ash: 8 parts; Water: 36.3 parts.
3. anti-electromagnetic radiation plasterboard according to claim 1 is characterized in that making step comprises:
(1) levigate lime borate
Adopt ball milling respectively that lime borate is levigate, particle diameter is less than 75 μ m;
(2) add carbon dust
The carbon dust particle diameter is 0.1～0.5mm;
(3) add binding agent
Add polyvinyl alcohol adhesive, die forming under 40MPa is then through 100 ℃ of oven dry;
(4) make six calcium borides
Carry out sintering behind the oven dry 4h under the condition of vacuum, sintering temperature is 1950K, and soaking time is 30min, makes six calcium borides;
(5) levigate six calcium borides
Adopt ball milling that six calcium borides are levigate, particle diameter is controlled to be 100～150 μ m;
(6) configuration dispersant solution
Add carboxymethyl cellulose in 50% total water amount, water temp is 50～60 ℃;
(7) mix system gypsum and six calcium borides
Gypsum and six calcium borides are mixed, adopt intermittent type to control automatically and stir instrument stirring 3min, speed is 20～30r/min, adds 50% total water amount then, improves rotating speed, and speed is 50～60r/min, and churning time is 3～5min;
(8) in gypsum and six calcium boride mixed solutions, add dispersant solution and silicon ash successively, put into planetary gypsum glue sand agitator and stir 3～5min;
(9) moulding
The material for preparing is joined mould, and forming method adopts compression moulding, and forming pressure adopts 12MPa.
CN2011100583410A 2011-03-03 2011-03-03 Gypsum plate capable of resisting electromagnetic radiation Expired - Fee Related CN102211907B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011100583410A CN102211907B (en) 2011-03-03 2011-03-03 Gypsum plate capable of resisting electromagnetic radiation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011100583410A CN102211907B (en) 2011-03-03 2011-03-03 Gypsum plate capable of resisting electromagnetic radiation

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CN102211907A true CN102211907A (en) 2011-10-12
CN102211907B CN102211907B (en) 2012-11-21

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103193436A (en) * 2013-03-21 2013-07-10 罗海军 Veneer with shielding performance
CN104212311A (en) * 2014-09-11 2014-12-17 叶长青 Latex paint with electromagnetic shielding performance
CN107434389A (en) * 2016-05-25 2017-12-05 北新集团建材股份有限公司 A kind of Thistle board of anti-electromagnetic radiation and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5683616A (en) * 1993-06-25 1997-11-04 Cyrkiewicz; Marceli Process for preparing ceramic-like materials and the ceramic-like materials
CN101257785A (en) * 2008-04-09 2008-09-03 海南大学 Electromagnetic wave absorbability fly ash sheet material
CN201627321U (en) * 2009-09-03 2010-11-10 天津工程师范学院 Electromagnetic radiation preventive plaster board

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5683616A (en) * 1993-06-25 1997-11-04 Cyrkiewicz; Marceli Process for preparing ceramic-like materials and the ceramic-like materials
CN101257785A (en) * 2008-04-09 2008-09-03 海南大学 Electromagnetic wave absorbability fly ash sheet material
CN201627321U (en) * 2009-09-03 2010-11-10 天津工程师范学院 Electromagnetic radiation preventive plaster board

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103193436A (en) * 2013-03-21 2013-07-10 罗海军 Veneer with shielding performance
CN104212311A (en) * 2014-09-11 2014-12-17 叶长青 Latex paint with electromagnetic shielding performance
CN104212311B (en) * 2014-09-11 2016-08-24 叶长青 A kind of emulsion paint having capability of electromagnetic shielding
CN107434389A (en) * 2016-05-25 2017-12-05 北新集团建材股份有限公司 A kind of Thistle board of anti-electromagnetic radiation and preparation method thereof

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Publication number Publication date
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Owner name: TIANJIN LICHUAN CONSTRUCTION ENGINEERING CO., LTD.

Free format text: FORMER OWNER: ZHU KUI

Effective date: 20140702

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Free format text: CORRECT: ADDRESS; FROM: 325000 WENZHOU, ZHEJIANG PROVINCE TO: 300000 BINHAI NEW DISTRICT, TIANJIN

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Effective date of registration: 20140702

Address after: Between the 300000 city of Tianjin Dongjiang Bonded Port Road and Zhengzhou road Asia Europe region South East Financial Trade Service Center building B room 5004 -36

Patentee after: Tianjin Li Chuan Construction Engineering Co., Ltd.

Address before: 325000 Wenzhou City, Ouhai province Jingshan Hill group of the building of the 302 room, room 11, Zhejiang

Patentee before: Zhu Kui

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121121

Termination date: 20160303