CN111606642B - Formaldehyde-purifying paper-faced gypsum board and preparation method thereof - Google Patents
Formaldehyde-purifying paper-faced gypsum board and preparation method thereof Download PDFInfo
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- CN111606642B CN111606642B CN201910310956.4A CN201910310956A CN111606642B CN 111606642 B CN111606642 B CN 111606642B CN 201910310956 A CN201910310956 A CN 201910310956A CN 111606642 B CN111606642 B CN 111606642B
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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
- C04B28/142—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 containing synthetic or waste calcium sulfate cements
- C04B28/144—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 containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
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Abstract
The application discloses paper surface gypsum board, the raw materials of paper surface gypsum board include: based on 100 parts by weight of desulfurized gypsum, 55-75 parts by weight of water, 0.05-0.2 part by weight of glass fiber, 0.1-2 parts by weight of foaming agent, 0.2-1 part by weight of retarder, 0.2-2 parts by weight of starch, 0.1-1 part by weight of zeolite, 0.1-1 part by weight of diatomite, 0.1-1 part by weight of pumice and 0.5-5 parts by weight of formaldehyde-purifying agent. The application also provides a preparation method of the paper-surface gypsum board. The application realizes the effect of removing formaldehyde through the combination of zeolite, diatomaceous earth, pumice and aldehyde-purifying agent.
Description
Technical Field
The application relates to the field of building materials, in particular to but not limited to a formaldehyde-purifying paper-surface gypsum board and a preparation method thereof.
Background
The paper-surface gypsum board has the advantages of light weight, fire resistance, sound insulation, heat preservation, heat insulation, good decorative performance (capable of being planed, nailed and sawed), convenient processing, environmental protection, space saving and the like, thereby being widely used in the field of decoration construction of various industrial buildings and civil buildings, and particularly being used as an inner wall material and a decoration material in high-rise buildings.
The paper-surface gypsum board is widely applied to interior decoration as a bulk building material. It is necessary to develop a gypsum plaster board having a formaldehyde-purifying function. At present, the aldehyde-cleaning gypsum board mainly realizes the aldehyde-cleaning function by doping an adsorption substance or spraying a photocatalyst material. The content of formaldehyde can be reduced in a short time by pure adsorption, but the problem of secondary release of a pollution source after saturated adsorption exists, so that the application aims to solve the problem that the formaldehyde is released to the air again after saturated adsorption in the gypsum plasterboard and is harmful to human health.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The application provides a gypsum plaster board and a preparation method thereof, and realizes the effect of removing formaldehyde through the combination of zeolite, diatomite, pumice and an aldehyde cleaning agent.
Specifically, the application provides a paper-surface gypsum board, the raw materials of paper-surface gypsum board include: based on 100 parts by weight of desulfurized gypsum, 55-75 parts by weight of water, 0.05-0.2 part by weight of glass fiber, 0.1-2 parts by weight of foaming agent, 0.2-1 part by weight of retarder, 0.2-2 parts by weight of starch, 0.1-1 part by weight of zeolite, 0.1-1 part by weight of diatomite, 0.1-1 part by weight of pumice and 0.5-5 parts by weight of formaldehyde-purifying agent.
In the present application, the raw materials of the paper-faced gypsum board consist of: based on 100 parts by weight of desulfurized gypsum, 55-75 parts by weight of water, 0.05-0.2 part by weight of glass fiber, 0.1-2 parts by weight of foaming agent, 0.2-1 part by weight of retarder, 0.2-2 parts by weight of starch, 0.1-1 part by weight of zeolite, 0.1-1 part by weight of diatomite, 0.1-1 part by weight of pumice and 0.5-5 parts by weight of formaldehyde-purifying agent.
In the present application, the aldehyde cleaning agent may be any one or more of tetrapod-like zinc oxide whiskers, titanium dioxide, zinc oxide, tin oxide, cadmium sulfide.
In the application, the desulfurized gypsum is prepared into desulfurized gypsum clinker by the following method:
the desulfurized gypsum enters a hammer type scattering machine grinding body, the materials are scattered and dried at the same time, and the desulfurized gypsum is dehydrated into desulfurized gypsum clinker by hot air.
In certain embodiments of the present application, the desulfurized gypsum raw meal enters the hammer mill body to break up the material while drying, the rotating rotor grinds the material, and the hot air dries the material. The heat transfer occurs after the hot gas directly contacts with the gypsum, and the gypsum (CaSO)4·2H2O) is rapidly dehydrated into plaster of paris (CaSO) after being heated4·1/2H2O、CaSO4) It is desulfurized gypsum clinker.
In the application, the content of chloride ions in the desulfurized gypsum clinker is not more than 300ppm, and the specific surface area of the desulfurized gypsum clinker is 3500cm2/g-4000cm2/g。
In the present application, the glass fiber may be any one or more of a medium alkali glass fiber, an alkali-free glass fiber and an alkali-resistant glass fiber, the glass fiber having a fiber length of 9mm to 15mm and a fiber monofilament diameter of 10 μm to 15 μm.
In the present application, the foaming agent may be selected from any one or more of inorganic foaming agents ammonium lauryl sulfate, sodium bicarbonate and ammonium bicarbonate.
In the application, the retarder is citric acid, sodium citrate, sodium hexametaphosphate, borax, and protein retarder.
In the present application, the protein retarder may be a bone glue protein retarder, a protein gypsum retarder formed by calcium-calcified degraded polyamide.
In the present application, the zeolite, diatomite and pumice are 200-500 mesh.
In the present application, there is also provided a method for making the gypsum plasterboard, the method comprising the steps of:
step one, calcining desulfurized gypsum to prepare desulfurized gypsum clinker;
step two, uniformly mixing zeolite, diatomite and pumice, adding an aldehyde purifying agent, and magnetically stirring for 30-60 min;
step three, mixing and stirring water, modified starch, glass fiber, foaming agent, retarder and the mixture obtained in the step two to prepare uniform mixed solution;
step four, adding the desulfurized gypsum clinker into the mixed solution obtained in the step three to prepare gypsum slurry;
fifthly, throwing the uniformly stirred gypsum slurry onto the facing paper under the action of centrifugal force, extruding the gypsum slurry by a forming cutter, overlapping the gypsum slurry with another facing paper under the extrusion of a forming plate after the facing paper is folded into a right angle, and firmly bonding the gypsum slurry to form a wet plate, and then leading out the wet plate to finish forming;
and step six, solidifying the punched wet plate, cutting the wet plate, and then entering a dryer to be dried at the temperature of 180-155 ℃, 100-130 ℃ and 45-60 ℃.
And seventhly, combining the dried boards, sawing edges, sealing edges and packaging to form the paper-surface gypsum board.
In some embodiments of the present application, the gypsum slurry that will stir evenly is thrown into the lower mask paper on the forming table under the centrifugal force effect on, and the gypsum slurry is extruded through the shaping sword under the drive of solidification belt traction force, makes lower mask paper fold into the right angle along its roller mark department, and lower mask paper and slurry are together with last mask paper overlap joint under the extrusion of forming plate to glue firmly and form wet board, and wet board is drawn forth under the traction of solidification belt afterwards, accomplishes the shaping.
The paper-surface gypsum board is prepared by mutually matching microporous zeolite, mesoporous diatomite and macroporous pumice to load an aldehyde purifying agent. The natural porous minerals have developed pores, a large number of pore passages and cavities are formed in the crystals, the specific surface area is large, high adsorption and filtration performances are shown, and after the natural porous minerals are matched with the action of an aldehyde purifying agent and applied to indoor space, the adsorption performance caused by the structure can effectively adsorb formaldehyde, and the aldehyde purifying agent decomposes formaldehyde to fundamentally purify the formaldehyde.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof.
Detailed Description
Hereinafter, embodiments of the present application will be described in detail to make objects, technical solutions and advantages of the present application more apparent. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
In the following examples, the desulfurized gypsum clinker used is made of desulfurized gypsum from solid waste produced by flue gas desulfurization in power plants; zeolite was produced by State invested flourishing Inc.; the glass fiber is purchased from mineral products limited of Jinghang of Hebei Jing, the fiber length of the glass fiber is 10mm, and the fiber monofilament diameter is 10 mu m; the diatomite is produced from a Shunkian mineral product processing factory in Lingshou county; pumice is produced from the processing factory of Baifeng mineral products in Lingshou county; the purchase of the aldehyde cleaning agent and the self-formation of the tetrapod-like zinc oxide whiskers are all handed over to Jingyu science and technology Co., Ltd; the foaming agent is purchased from chemical company of Jinnzhao, Ji; the modified starch is purchased from Jinan Yuan chemical Co., Ltd; the retarder sodium bicarbonate is a protein gypsum retarder formed by calcium-calcified degraded polyamide and is purchased from Qinzhi of Shanghai and chemical engineering Co.
Example 1
The method for preparing the paper-surface gypsum board comprises the following specific steps: step one, pretreating desulfurized gypsum clinker;
and step two, weighing the components of the paper-surface gypsum board, wherein 100 parts by weight of desulfurized gypsum, 57 parts by weight of water, 0.08 part by weight of glass fiber, 1.5 parts by weight of foaming agent, 0.3 part by weight of retarder, 0.3 part by weight of starch, 0.2 part by weight of 200-mesh zeolite, 0.2 part by weight of 300-mesh diatomite, 0.1 part by weight of 450-mesh pumice and 0.5 part by weight of aldehyde cleaning agent.
Step three, uniformly mixing the zeolite, the diatomite and the pumice, adding the aldehyde purifying agent, and magnetically stirring for 30 minutes to prepare the mineral-loaded aldehyde purifying agent.
Step four, mixing water, modified starch, glass fiber, foaming agent, retarder and mineral-loaded formaldehyde purifying agent, and stirring to prepare uniform mixed solution;
and step five, adding desulfurized gypsum powder into the mixed solution to prepare gypsum slurry.
And sixthly, throwing the uniformly stirred slurry onto the lower protective paper on the forming table under the action of centrifugal force, extruding the slurry by a forming cutter under the driving of traction force of a solidification belt, folding the lower protective paper into a right angle along the roller mark, overlapping the lower protective paper and the slurry with the upper protective paper under the extrusion of the forming plate, firmly bonding to form a wet plate, and then leading out the wet plate under the traction of the solidification belt to finish forming.
And step seven, solidifying the wet plate on a conveying belt, cutting the wet plate, and then entering a dryer to be dried at the temperature of 180 ℃, 110 ℃ and 45 ℃.
Step eight: and (4) combining the dried boards, sawing edges, sealing edges and packaging to form the gypsum plaster board.
Example 2
The method for preparing the paper-surface gypsum board comprises the following specific steps:
step one, pretreating desulfurized gypsum clinker;
and step two, weighing the components of the paper-surface gypsum board, wherein 100 parts by weight of desulfurized gypsum, 67 parts by weight of water, 0.13 part by weight of glass fiber, 0.2 part by weight of foaming agent, 0.5 part by weight of retarder, 0.8 part by weight of starch, 0.5 part by weight of 450-mesh zeolite, 0.5 part by weight of 200-mesh diatomite, 0.5 part by weight of 200-mesh pumice and 2.5 parts by weight of aldehyde cleaning agent.
Steps three to eight are the same as in example 1.
Example 3
The method for preparing the paper-surface gypsum board comprises the following specific steps:
step one, pretreating desulfurized gypsum clinker;
and step two, weighing the components of the paper-surface gypsum board, wherein 100 parts by weight of desulfurized gypsum, 70 parts by weight of water, 0.18 part by weight of glass fiber, 0.5 part by weight of foaming agent, 0.8 part by weight of retarder, 1.6 parts by weight of starch, 0.8 part by weight of 325-mesh zeolite, 0.8 part by weight of 475-mesh diatomite, 0.8 part by weight of 325-mesh pumice and 4.5 parts by weight of aldehyde cleaning agent.
Steps three to eight are the same as in example 1.
Comparative example 1
The common paper-surface gypsum board is sold in the market, and the raw materials of the board comprise zeolite, diatomite and pumice.
Comparative example 2
The commercial aldehyde-cleaning gypsum plasterboard uses four-needle zinc oxide whisker as aldehyde-cleaning agent
Test example 1
The gypsum plasterboards of examples 1 to 3 and comparative examples 1 to 1 were tested with reference to the national standard GB/T9775-2008 "gypsum plasterboard", and the physical and mechanical properties of the gypsum plasterboards were measured, and the results are shown in table 1.
TABLE 1 results of performance tests on gypsum plasterboards prepared in examples 1 to 3 and comparative examples 1 to 2 of the present application
Note: and the paper-surface gypsum board has the bonding performance of grade I, so that the protective paper and the gypsum board core are completely adhered firmly without exposing gypsum.
As can be seen from Table 2, the gypsum plasterboard prepared in the embodiment of the present application can meet the physical and mechanical properties required by the building material industry standards in terms of performance.
Test example 2
The purification efficiency and the durability of the formaldehyde purification effect of the gypsum plasterboards of examples 1 to 3 and comparative examples 1 to 2 are tested with reference to the purification performance of the coating material with the indoor air purification function of standard JCT-1074-. The results are shown in Table 2.
TABLE 2 cleaning efficiency and cleaning durability tests of gypsum boards prepared in examples 1-3 and comparative examples 1-2 of the present application
The performance index detection in the present application is based on national and industry standards. The paper-surface gypsum board produced by the formula and the preparation process meets or is higher than the requirements of national standards, has the function of purifying formaldehyde, and optimizes the indoor air environment.
Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.
Claims (9)
1. A paper-faced gypsum board, the raw materials of which comprise: based on 100 parts by weight of desulfurized gypsum, 55-75 parts by weight of water, 0.05-0.2 part by weight of glass fiber, 0.1-2 parts by weight of foaming agent, 0.2-1 part by weight of retarder, 0.2-2 parts by weight of starch, 0.1-1 part by weight of zeolite, 0.1-1 part by weight of diatomite, 0.1-1 part by weight of pumice and 0.5-5 parts by weight of formaldehyde-purifying agent.
2. The gypsum plasterboard of claim 1, wherein the aldehyde scavenging agent is any one or more of tetrapod zinc oxide whiskers, titanium dioxide, tin oxide, cadmium sulfide.
3. The gypsum plasterboard of claim 1, wherein the desulfurized gypsum is made into desulfurized gypsum clinker by:
the desulfurized gypsum enters a hammer type scattering machine grinding body, the materials are scattered and dried at the same time, and the desulfurized gypsum is dehydrated into desulfurized gypsum clinker by hot air.
4. The paper-faced gypsum board of claim 3, wherein the desulfurized gypsum clinker has a chloride ion content of no greater than 300ppm and a specific surface area of 3500cm2/g-4000cm2/g。
5. The gypsum plasterboard of claim 1, wherein the glass fibers are selected from any one or more of medium alkali glass fibers, alkali-free glass fibers and alkali-resistant glass fibers, the glass fibers having a fiber length of 9mm to 15mm and a fiber filament diameter of 10 μm to 15 μm.
6. The paper-faced gypsum board of claim 1, wherein the foaming agent is selected from any one or more of the inorganic foaming agents sodium bicarbonate, ammonium bicarbonate.
7. The paper-faced gypsum board of claim 1, wherein the set retarder is selected from any one or more of citric acid, sodium citrate, sodium hexametaphosphate, borax, protein-based set retarders.
8. The gypsum plaster board of claim 7, wherein the retarder is a bone collagen protein retarder, a protein gypsum retarder formed by calcium-calcifying degraded polyamide.
9. The gypsum plasterboard of claim 1, wherein the zeolite, diatomaceous earth, pumice are 200-500 mesh.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910310956.4A CN111606642B (en) | 2019-04-17 | 2019-04-17 | Formaldehyde-purifying paper-faced gypsum board and preparation method thereof |
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| CN201910310956.4A CN111606642B (en) | 2019-04-17 | 2019-04-17 | Formaldehyde-purifying paper-faced gypsum board and preparation method thereof |
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| CN111606642B true CN111606642B (en) | 2021-08-24 |
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| CN113698163B (en) * | 2021-07-27 | 2023-01-06 | 北新集团建材股份有限公司 | Paper-surface gypsum board and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120034836A1 (en) * | 2006-03-30 | 2012-02-09 | Lafarge Platres | Lightweight plasterboard and plaster slurry composition used for its manufacture |
| CN105731969A (en) * | 2016-03-02 | 2016-07-06 | 湖北格林森新型建材科技有限公司 | Photocatalytic inorganic ecological decoration board and production method thereof |
| CN105916828A (en) * | 2014-01-03 | 2016-08-31 | 圣戈班普拉科公司 | Gypsum plaster-based material containing an EDTA metal complex |
| CN109133824A (en) * | 2017-06-28 | 2019-01-04 | 北新集团建材股份有限公司 | A kind of Thistle board and preparation method thereof |
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2019
- 2019-04-17 CN CN201910310956.4A patent/CN111606642B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120034836A1 (en) * | 2006-03-30 | 2012-02-09 | Lafarge Platres | Lightweight plasterboard and plaster slurry composition used for its manufacture |
| CN105916828A (en) * | 2014-01-03 | 2016-08-31 | 圣戈班普拉科公司 | Gypsum plaster-based material containing an EDTA metal complex |
| CN105731969A (en) * | 2016-03-02 | 2016-07-06 | 湖北格林森新型建材科技有限公司 | Photocatalytic inorganic ecological decoration board and production method thereof |
| CN109133824A (en) * | 2017-06-28 | 2019-01-04 | 北新集团建材股份有限公司 | A kind of Thistle board and preparation method thereof |
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