CN112852245A - Gypsum board coating, preparation method and application - Google Patents
Gypsum board coating, preparation method and application Download PDFInfo
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- CN112852245A CN112852245A CN202110288018.6A CN202110288018A CN112852245A CN 112852245 A CN112852245 A CN 112852245A CN 202110288018 A CN202110288018 A CN 202110288018A CN 112852245 A CN112852245 A CN 112852245A
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- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 233
- 239000010440 gypsum Substances 0.000 title claims abstract description 233
- 238000000576 coating method Methods 0.000 title claims abstract description 143
- 239000011248 coating agent Substances 0.000 title claims abstract description 134
- 238000002360 preparation method Methods 0.000 title abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 96
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 87
- 239000000843 powder Substances 0.000 claims abstract description 73
- 238000002156 mixing Methods 0.000 claims abstract description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000011575 calcium Substances 0.000 claims abstract description 52
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 52
- 239000000839 emulsion Substances 0.000 claims abstract description 47
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 41
- 239000002994 raw material Substances 0.000 claims abstract description 35
- 239000011324 bead Substances 0.000 claims abstract description 31
- 239000011521 glass Substances 0.000 claims abstract description 31
- 239000004568 cement Substances 0.000 claims abstract description 30
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 29
- 239000002270 dispersing agent Substances 0.000 claims abstract description 29
- 238000009736 wetting Methods 0.000 claims abstract description 29
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 28
- 239000001913 cellulose Substances 0.000 claims abstract description 28
- 229920002678 cellulose Polymers 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims description 93
- 239000004744 fabric Substances 0.000 claims description 27
- 239000003755 preservative agent Substances 0.000 claims description 11
- 230000002335 preservative effect Effects 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000001680 brushing effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 10
- 238000010298 pulverizing process Methods 0.000 abstract description 6
- 241000894006 Bacteria Species 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 2
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 235000010215 titanium dioxide Nutrition 0.000 description 39
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 18
- 241000276489 Merlangius merlangus Species 0.000 description 14
- 239000000853 adhesive Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 9
- 239000000835 fiber Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000004383 yellowing Methods 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000006210 lotion Substances 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- -1 acrylic ester Chemical class 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a gypsum board coating, a preparation method and application, and relates to the technical field of coating materials. The gypsum board coating comprises elastic emulsion, glass beads, a silane coupling agent, calcium powder, titanium dioxide, white cement, a wetting dispersant, cellulose, a defoaming agent and water; this gypsum board coating not only can keep apart gypsum board and outside air, thereby avoid causing the gypsum board to peel, turn yellow, fracture and pulverization in the hydrone in the air gets into the gypsum board, prevent that the gypsum board of pulverization from producing bacterium and mould and diffusing and cause the injury to the human body in the environment to can also consolidate the gypsum board, promote the durability and the compressive capacity of gypsum board. In addition, the invention also provides a preparation method of the gypsum board coating, which comprises the following steps: raw materials are mixed and paste is formed, the gypsum board coating can be obtained only by mixing and stirring the raw materials, the operation steps are simple and convenient, the implementation is easy, the operation difficulty of operators can be reduced, and the preparation efficiency of the gypsum board coating is improved.
Description
Technical Field
The invention relates to the technical field of coating materials, in particular to a gypsum board coating, a preparation method and application.
Background
The gypsum board is a common building decoration material, and as is well known, the gypsum board is widely applied to partition walls, suspended ceilings and the like of buildings due to the characteristics of light weight, easiness in construction, good fire resistance and the like.
In the prior art, the compression strength of the gypsum board is relatively poor, and the gypsum board does not have waterproof capability, so that the gypsum board is inconvenient to use, a plurality of novel gypsum boards capable of improving the compression strength of the gypsum board are also available on the market, waterproof and moistureproof functions are added for the gypsum board, however, the novel gypsum boards are improved from the structure of the gypsum board, only aiming at the gypsum board, cannot aim at other gypsum boards on the market, and do not have wide applicability, and a produced mould needs to be manufactured again, so that the production cost is high. In actual use, the gypsum boards are cut and spliced in the construction process, so that splicing seams can appear between the gypsum boards. The joint treatment materials sold in the market at present mainly comprise non-adhesive powder and two-component crack resistance materials. The construction process of the adhesive-free powder in the process of treating the joint is too complicated, and the generation of cracks cannot be avoided due to the low strength of the adhesive powder, so that the joint is treated, and the problem that the position of the joint is often obviously higher than the plane of an integral plate, the joint is obvious on a large construction surface, and the attractiveness is influenced is also solved. 2 the hardness is very high after anti precious combination of anti-crack is used, and the rigidity is very strong, and the easy fracture when the coating is too thin to because the cross-section of gypsum board is very loose, so also hardly avoid the production of crack, and waterproof and dampproofing gypsum board on the market only can slow down the speed of pulverization after absorbing water, and can not play real dampproofing and waterproofing effect.
Therefore, a material which can really solve the problems of water resistance and moisture resistance of the gypsum board, improve the compressive strength of the gypsum board and has wide applicability is urgently needed in the market.
Disclosure of Invention
The invention aims to provide a gypsum board coating, which can not only isolate a gypsum board from outside air, prevent water molecules in the air from entering the gypsum board to cause peeling, yellowing, cracking and pulverization of the gypsum board, prevent the pulverized gypsum board from generating bacteria and mould and diffusing the bacteria and mould to the environment to cause damage to human bodies, but also reinforce the gypsum board, improve the durability and the pressure resistance of the gypsum board, is directly coated on the outer surface of the gypsum board when in use, is suitable for various gypsum boards and is widely applicable.
Another object of the present invention is to provide a method for preparing a gypsum board coating, which can obtain a gypsum board coating by simply mixing and stirring raw materials, has simple and convenient operation steps, is easy to implement, can reduce the operation difficulty of operators, and can improve the preparation efficiency of the gypsum board coating.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
On one hand, the embodiment of the application provides a gypsum board coating, which comprises the following components in parts by weight: 45-55 parts of elastic emulsion, 8-12 parts of glass beads, 0.5-1 part of silane coupling agent, 30-40 parts of calcium powder, 3-8 parts of titanium dioxide, 8-12 parts of white cement, 1-1.5 parts of wetting dispersant, 0.2-0.4 part of cellulose, 1-1.5 parts of defoaming agent and 3-7 parts of water.
In another aspect, the present embodiments provide for the use of a gypsum board coating in the preparation of a water, moisture, pressure and/or durable gypsum board.
In another aspect, the embodiments of the present application provide a method for preparing a gypsum board coating, including the following steps: mixing cellulose and water, standing to obtain a first mixture, mixing the elastic emulsion, the glass beads, the wetting dispersant and the silane coupling agent, stirring for the first time, adding calcium powder and titanium dioxide, stirring for the second time to obtain a second mixture, mixing the first mixture and the second mixture, stirring for the third time, and adding the defoaming agent to obtain a third mixture. Forming paste: and mixing and uniformly stirring the white cement and water to obtain paste, and stirring and uniformly mixing the mixture III and the paste according to the weight ratio to obtain the gypsum board coating.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:
the embodiment of the application provides a gypsum board coating, and the gypsum board coating is composed of elastic emulsion, glass beads, a silane coupling agent, calcium powder, titanium dioxide, white cement, a wetting dispersant, cellulose, a defoaming agent and water, so that the gypsum board can be isolated from the outside air, water molecules in the air are prevented from entering the gypsum board to cause peeling, yellowing, cracking and pulverization of the gypsum board, the gypsum board can be reinforced, and the durability and the pressure resistance of the gypsum board are improved.
The embodiment of the application further provides a preparation method of the gypsum board coating, the preparation method is simple and easy to implement through stirring and uniformly mixing different raw materials, the operation difficulty of operators is greatly reduced, the preparation efficiency of the gypsum board coating is improved, and the preparation of the gypsum board coating is enabled to be rapid and efficient.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to specific examples.
On one hand, the embodiment of the invention provides a gypsum board coating, which comprises the following components in parts by weight: 45-55 parts of elastic emulsion, 8-12 parts of glass beads, 0.5-1 part of silane coupling agent, 30-40 parts of calcium powder, 3-8 parts of titanium dioxide, 8-12 parts of white cement, 1-1.5 parts of wetting dispersant, 0.2-0.4 part of cellulose, 1-1.5 parts of defoaming agent and 3-7 parts of water.
The elastic emulsion is usually a copolymer of acrylic ester and organosilicon, the elastic emulsion has excellent resilience, flexibility, adhesiveness, water resistance, weather resistance, dust resistance, ultraviolet resistance and other properties, and elastic emulsion paint, elastic putty and the like prepared from the elastic emulsion have excellent elasticity and elongation rate, so that fine cracks of a wall body can be effectively covered, a gypsum board coating containing the elastic emulsion can improve the physical properties of the gypsum board and increase the compression resistance and the ductility of the gypsum board, the acrylic elastic emulsion is more preferable in the elastic emulsion, has good elasticity and good waterproof property, and can prevent water molecules in air from entering the gypsum board so as to avoid the gypsum board from getting damp or peeling.
The glass beads have the characteristics of light texture, high strength and stable chemical property, can be easily dispersed in an organic material system, are convenient to process, can increase the corrosion resistance and toughness of a gypsum board when used for a gypsum board coating, can also increase the concave-convex feeling of the coating, can increase the contact surface of the gypsum board and putty when the putty is coated, thereby increasing the bonding strength of the gypsum board and the putty, and enhancing the sound insulation capability of the gypsum board.
The silane coupling agent can greatly improve the cementing effect of the gypsum board coating and the gypsum board, so that the gypsum board coating is not easy to fall off, the tensile strength and the compressive strength of the gypsum board can be enhanced, and the gypsum board is not easy to deform.
The main components of the calcium powder are calcium carbonate which is alkalescent and is soluble in water and acid, and the calcium powder is mainly divided into heavy calcium powder, light calcium powder, active calcium powder, flue gas desulfurization calcium powder and the like.
The main component of titanium white is titanium dioxide, and titanium dioxide has hydrophilicity, can adsorb the hydrone in the air, avoids inside the hydrone in the air gets into the gypsum board, and titanium dioxide has good heat stability and higher hardness moreover, can promote the resistance of gypsum board to external hot environment, can also promote the compressive strength of gypsum board to increase the whiteness degree and the hiding power of gypsum board coating simultaneously. In the embodiment of the invention, the preferable industrial-grade titanium dioxide is generally rutile titanium dioxide, the rutile titanium dioxide has excellent performances of corrosion resistance, low temperature resistance and the like while having high strength and high temperature resistance, and in addition, when the gypsum board coated with the gypsum board coating is coated with paint, the rutile titanium dioxide can also adsorb and decompose toxic gases such as formaldehyde, benzene and the like in the gypsum board coating, so that the pollution of harmful substances in the paint to the environment is reduced.
The white cement is a hydraulic cementing material prepared by grinding white portland cement clinker with low content of ferric oxide, a proper amount of gypsum and a mixed material, the white cement has higher setting speed and higher hardness, and can enhance the compressive strength of a gypsum board.
The wetting dispersant can enable calcium powder and titanium dioxide to be uniformly dispersed in the gypsum board coating, so that the distribution of active ingredients in the gypsum board coating is more uniform, and the practicability of the gypsum board coating is improved.
The cellulose has certain viscosity and toughness, so that the gypsum board coating can be better adsorbed on the gypsum board and is not easy to fall off, and the ductility and tensile strength of the gypsum board can be enhanced.
The defoaming agent can reduce the surface tension of the gypsum board coating, and avoids the foaming of the gypsum board coating, thereby leading to the problem that the gypsum board coating cannot be uniformly distributed on the surface of the gypsum board, and easily leading to the falling off of the gypsum board coating. The water can mix various raw materials and components, avoid solidification and is convenient to use.
The silane coupling agent can change the adhesive property of the glass beads, so that the glass beads can be glued in the elastic emulsion, the hardness and the viscosity of the elastic emulsion can be increased, the ductility of the elastic emulsion can be increased, the elastic emulsion can be better used as a gypsum board coating, the glass beads can be fully dispersed in the elastic emulsion by the wetting dispersant, the hardness, the ductility and the like of the elastic emulsion can be fully and comprehensively improved, then the calcium powder and the titanium dioxide are combined with the elastic emulsion, high-hardness substances are further mixed into the elastic emulsion, the whiteness of the elastic emulsion is improved, and the calcium powder and the titanium dioxide cannot react with the elastic emulsion, so the physicochemical properties of the calcium powder and the titanium dioxide can be kept, finally, the white cement provides coagulability for the whole system, and the elastic emulsion keeps good ductility and hydrophilicity after coagulation, still solidify calcium powder and titanium white powder wherein together, increased hardness, not only improved the waterproof, the humidity resistance of gypsum board, still promoted the hardness and the ductility of gypsum board, in addition the elasticity emulsion can combine with the putty of applying paint on the gypsum board with a brush in the coating, compares the adhesive strength of ordinary gypsum board and putty higher, makes putty be difficult to drop.
In some embodiments of the present invention, the gypsum board coating comprises the following components in parts by weight: 50 parts of elastic emulsion, 10 parts of glass beads, 0.75 part of silane coupling agent, 35 parts of calcium powder, 5 parts of titanium dioxide, 10 parts of white cement, 1.2 parts of wetting dispersant, 0.3 part of cellulose, 1.3 parts of defoaming agent and 5 parts of water. According to the scheme, the gypsum board coating prepared in the embodiment of the invention has good effect of raw material proportioning, and the gypsum board coating prepared in the mode has excellent waterproof, damp-proof, compression-resistant, tensile and aesthetic degrees.
In some embodiments of the present invention, the calcium powder comprises 500 mesh heavy calcium powder and 300 mesh heavy calcium powder, and the weight ratio of the 500 mesh heavy calcium powder to the 300 mesh heavy calcium powder is 4: 3. Through combining 500 mesh heavy calcium powder and 300 mesh heavy calcium powder in proportion and using, can also reduce the graininess of gypsum board coating when both guaranteeing gypsum board coating hardness, make the gypsum board coating more pleasing to the eye, and feel better.
In some embodiments of the invention, the gypsum board coating further comprises a scrim. The grid cloth is preferably self-adhesive fiber grid cloth of 5mm multiplied by 5mm, and the tensile and compressive properties of the gypsum board can be improved by laying the grid cloth on the surface of the gypsum board, the effect similar to that of steel bars in concrete is achieved, and the support effect on the gypsum board after being coated with the concrete is achieved.
On the other hand, the embodiment of the invention also provides a preparation method of the gypsum board coating, which comprises the following steps of mixing the raw materials: mixing cellulose and water, standing to obtain a first mixture, mixing the elastic emulsion, the glass beads, the wetting dispersant and the silane coupling agent, stirring for the first time, adding calcium powder and titanium dioxide, stirring for the second time to obtain a second mixture, mixing the first mixture and the second mixture, stirring for the third time, and adding the defoaming agent to obtain a third mixture. Forming paste: coating the mesh cloth on the surface of the gypsum board, mixing and uniformly stirring the white cement and the water to obtain paste, stirring and uniformly mixing the mixture III and the paste according to the weight ratio, and brushing the mixture III on the surface of the mesh cloth to obtain the gypsum board coating. According to the preparation method of the gypsum board, the gypsum board coating can be finally prepared through multiple times of stirring according to different added raw materials, the gypsum board coating can be placed in a reaction kettle and automatically stirred through the reaction kettle, the stirring speed and the stirring time of the reaction kettle only need to be adjusted, and manual stirring is not needed. The preparation method is simple and feasible, greatly reduces the operation difficulty of operators, reduces the workload of the operators and accelerates the production efficiency of the gypsum board coating. In addition, when the coating is brushed, each surface of the gypsum board needs to be brushed, and the thickness of each surface coating needs to be more than 0.7mm, so that the whole gypsum board can be covered by the coating. The gypsum board coating can also be used as sealing glue for cutting cuts and splicing seams of a gypsum board, the interior of the gypsum board is prevented from being exposed in an external environment, and the existing joint treatment material mainly has non-adhesive powder and two-component crack resistance. The construction process of the adhesive-free powder during joint treatment is too complicated, in addition, the generation of cracks cannot be avoided due to the low strength of the adhesive-free powder, the position of the joint is often obviously higher than the plane of the whole plate, the construction surface is obvious at a large point, and the attractiveness is influenced. The bi-component crack-resistant material has very high hardness and very strong rigidity after combined use, when the coating is thin, the fracture of the joint can be easily caused, and the section of the gypsum board is very loose, so that the generation of cracks is difficult to avoid, and the problems can be effectively avoided by adopting the third mixture and the fourth mixture. Therefore, a uniform coating with weather resistance, moisture resistance, water resistance, elasticity, toughness, rigidity, environmental protection and sound insulation is formed on the construction surface of the novel gypsum board, and the problems of joint fracture, easy aging of the gypsum board and the like are effectively avoided.
In some embodiments of the present invention, the above raw material mixing step further comprises adding a preservative, and the adding a preservative comprises adding a preservative to the mixture three and stirring four times. In actual use, the prepared gypsum board coating needs to be used immediately within 3 hours, and the mixture III in the gypsum board coating can be stored for a long time after the preservative is added, so that various raw materials in the mixture III are prevented from being denatured. The preservative is added into the mixture III to obtain a mixture IV, so that the mixed most raw materials are stored for a long time, the mixed most raw materials are prevented from being rotten during storage, the conditions for using the raw materials are relaxed, the raw materials do not need to be forced to be used at present, and convenience is provided for an operator to prepare the gypsum board coating.
In some embodiments of the present invention, the weight ratio of the mixture three to the paste is 4: 1. Through combining mixture three and lotion according to this proportion, can make three even and plump distributions of mixture in the lotion to make the gypsum board coating of making behind the gypsum board surface in coating, each place all has beneficial effect such as outstanding waterproof, dampproofing, tensile and resistance to compression, can not appear that certain place leads to waterproof, dampproofing, tensile and resistance to compression effect weak because the distribution inequality of gypsum board coating.
In some embodiments of the present invention, the second stirring step comprises stirring at 500rpm for 8-12min at 300-. Before adding the calcium powder and the titanium dioxide, firstly adjusting the rotation speed to be 300-1600 rpm, then adding the calcium powder and the titanium dioxide, after stirring for 8-12min, adjusting the rotation speed to be 1400-1600rpm and stirring for 18-22min, firstly, slowly stirring to uniformly mix the titanium dioxide and the calcium powder with the previously added raw materials, then, stirring at high speed to fully mix the crushed calcium powder and the titanium dioxide with the previous raw materials, and stirring at high speed to break the titanium dioxide and the calcium powder into smaller particles, thereby fully dispersing the titanium dioxide and the calcium powder in the subsequently prepared gypsum board coating.
In some embodiments of the present invention, the rotation speed of the first stirring is 800-. The stirring in each time adopts different stirring speeds and stirring time according to the different physical properties and chemical properties of the added raw materials, and the raw materials can be uniformly mixed according to the different physical properties of the different raw materials, so that the raw materials are treated in a targeted manner.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment provides a gypsum board coating, which comprises the following components in parts by weight: 45 parts of acrylic elastic emulsion, 8 parts of glass beads, 0.5 part of silane coupling agent, 17 parts of 500-mesh heavy calcium powder, 13 parts of 300-mesh heavy calcium powder, 3 parts of industrial-grade titanium dioxide, 8 parts of 425 # white cement, 1 part of wetting dispersant, 0.2 part of high-viscosity cellulose, 1 part of defoaming agent, 3 parts of water and 5mm multiplied by 5mm self-adhesive fiber mesh cloth.
The embodiment also provides a preparation method of the gypsum board coating, which comprises the following steps of mixing the raw materials: mixing high-viscosity cellulose with water, standing for 36h to obtain a first mixture, mixing the acrylic elastic emulsion, the glass beads, the wetting dispersant and the silane coupling agent, stirring at the rotating speed of 800rpm for 8min, adjusting the rotating speed to 300rpm, adding 500-mesh coarse whiting powder, 300-mesh coarse whiting powder and industrial titanium dioxide, stirring for 8min, adjusting the rotating speed to 1400rpm, stirring for 18min to obtain a second mixture, uniformly mixing the first mixture with the second mixture, adjusting the rotating speed to 300rpm, stirring for 8min, and adding an antifoaming agent to obtain a third mixture. Forming paste: and mixing and stirring No. 425 white cement and water uniformly to obtain paste, and stirring and uniformly mixing the mixture III and the paste according to the weight ratio of 4:1 to obtain the gypsum board coating.
Example 2
This example provides a gypsum board coating comprising the following components: 55 parts of acrylic elastic emulsion, 12 parts of glass beads, 1 part of silane coupling agent, 23 parts of 500-mesh heavy calcium powder, 17 parts of 300-mesh heavy calcium powder, 8 parts of industrial-grade titanium dioxide, 12 parts of 425 # white cement, 1.5 parts of wetting dispersant, 0.4 part of high-viscosity cellulose, 1.5 parts of defoaming agent, 7 parts of water and 5mm multiplied by 5mm self-adhesive fiber mesh cloth.
The embodiment also provides a preparation method of the gypsum board coating, which comprises the following steps of mixing the raw materials: mixing high-viscosity cellulose with water, standing for 36h to obtain a first mixture, mixing the acrylic elastic emulsion, the glass beads, the wetting dispersant and the silane coupling agent, stirring at the rotation speed of 1200rpm for 12min, adjusting the rotation speed to 500rpm, adding 500-mesh coarse whiting powder, 300-mesh coarse whiting powder and industrial titanium dioxide, stirring for 12min, adjusting the rotation speed to 1600rpm, stirring for 22min to obtain a second mixture, uniformly mixing the first mixture with the second mixture, adjusting the rotation speed to 500rpm, stirring for 12min, and adding an antifoaming agent to obtain a third mixture. Forming paste: coating the mesh cloth on the outer surface of the whole gypsum board, mixing and uniformly stirring No. 425 white cement and water to obtain paste, uniformly stirring and uniformly mixing the mixture III and the paste according to the weight ratio of 4:1, and then coating the mixture on the mesh cloth to obtain the gypsum board coating.
Example 3
The embodiment provides a gypsum board coating, which comprises the following components in parts by weight: 50 parts of acrylic elastic emulsion, 10 parts of glass beads, 0.75 part of silane coupling agent, 20 parts of 500-mesh heavy calcium powder, 15 parts of 300-mesh heavy calcium powder, 5 parts of industrial-grade titanium dioxide, 10 parts of 425 # white cement, 1.2 parts of wetting dispersant, 0.3 part of high-viscosity cellulose, 1.3 parts of defoaming agent, 5 parts of water and 5mm multiplied by 5mm self-adhesive fiber mesh cloth.
The embodiment also provides a preparation method of the gypsum board coating, which comprises the following steps of mixing the raw materials: mixing high-viscosity cellulose with water, standing for 36h to obtain a mixture I, mixing the acrylic elastic emulsion, the glass beads, the wetting dispersant and the silane coupling agent, stirring at the rotating speed of 1000rpm for 10min, adjusting the rotating speed to 400rpm, adding 500-mesh coarse whiting powder, 300-mesh coarse whiting powder and industrial titanium dioxide, stirring for 10min, adjusting the rotating speed to 1500rpm, stirring for 20min to obtain a mixture II, uniformly mixing the mixture I and the mixture II, adjusting the rotating speed to 400rpm, stirring for 10min, and adding an antifoaming agent to obtain a mixture III. Forming paste: coating the mesh cloth on the outer surface of the whole gypsum board, mixing and uniformly stirring No. 425 white cement and water to obtain paste, uniformly stirring and uniformly mixing the mixture III and the paste according to the weight ratio of 4:1, and then coating the mixture on the mesh cloth to obtain the gypsum board coating.
Example 4
The embodiment provides a gypsum board coating, which comprises the following components in parts by weight: 52 parts of acrylic elastic emulsion, 11 parts of glass beads, 0.9 part of silane coupling agent, 38 parts of 300-mesh heavy calcium powder, 7 parts of common titanium dioxide, 11 parts of No. 325 white cement, 1.4 parts of wetting dispersant, 0.32 part of low-viscosity cellulose, 1.4 parts of defoaming agent, 6 parts of water and 5mm multiplied by 5mm self-adhesive fiber mesh cloth.
The embodiment also provides a preparation method of the gypsum board coating, which comprises the following steps of mixing the raw materials: mixing low-viscosity cellulose with water, standing for 36 hours to obtain a first mixture, mixing the acrylic elastic emulsion, the glass beads, the wetting dispersant and the silane coupling agent, stirring at the rotating speed of 1100rpm for 11 minutes, adjusting the rotating speed to 450rpm, adding 300-mesh coarse whiting powder and common titanium dioxide, stirring for 11 minutes, adjusting the rotating speed to 1550rpm, stirring for 21 minutes to obtain a second mixture, uniformly mixing the first mixture with the second mixture, adjusting the rotating speed to 450rpm, stirring for 11 minutes, and adding an antifoaming agent to obtain a third mixture. Forming paste: coating the mesh cloth on the outer surface of the whole gypsum board, mixing No. 325 white cement with water and uniformly stirring to obtain paste, uniformly stirring the mixture III and the paste according to the weight ratio of 4:1, and then coating the mixture III on the mesh cloth to obtain the gypsum board coating.
Example 5
The embodiment provides a gypsum board coating, which comprises the following components in parts by weight: 48 parts of acrylic elastic emulsion, 9 parts of glass beads, 0.65 part of silane coupling agent, 32 parts of 500-mesh heavy calcium powder, 4 parts of industrial-grade titanium dioxide, 9 parts of No. 425 white cement, 1.1 parts of wetting dispersant, 0.28 part of high-viscosity cellulose, 1.1 part of defoaming agent, 4 parts of water and 5mm multiplied by 5mm self-adhesive fiber mesh cloth.
The embodiment also provides a preparation method of the gypsum board coating, which comprises the following steps of mixing the raw materials: mixing high-viscosity cellulose with water, standing for 36h to obtain a first mixture, mixing the acrylic elastic emulsion, the glass beads, the wetting dispersant and the silane coupling agent, stirring at the rotation speed of 900rpm for 9min, adjusting the rotation speed to 350rpm, adding 500-mesh coarse whiting powder and industrial titanium dioxide, stirring for 9min, adjusting the rotation speed to 1450rpm, stirring for 19min to obtain a second mixture, uniformly mixing the first mixture with the second mixture, adjusting the rotation speed to 350rpm, stirring for 9min, and adding a defoaming agent to obtain a third mixture. Forming paste: coating the mesh cloth on the outer surface of the whole gypsum board, mixing and uniformly stirring No. 425 white cement and water to obtain paste, uniformly stirring and uniformly mixing the mixture III and the paste according to the weight ratio of 4:1, and then coating the mixture on the mesh cloth to obtain the gypsum board coating.
Example 6
The embodiment provides a gypsum board coating, which comprises the following components in parts by weight: 53 parts of acrylic elastic emulsion, 11.5 parts of glass beads, 0.85 part of silane coupling agent, 39 parts of 300-mesh heavy calcium powder, 6 parts of industrial-grade titanium dioxide, 11.5 parts of No. 425 white cement, 1.45 parts of wetting dispersant, 0.35 part of high-viscosity cellulose, 1.45 parts of defoaming agent, 6.5 parts of water and 5mm multiplied by 5mm self-adhesive fiber mesh cloth.
The embodiment also provides a preparation method of the gypsum board coating, which comprises the following steps of mixing the raw materials: mixing high-viscosity cellulose with water, standing for 36h to obtain a first mixture, mixing the acrylic elastic emulsion, the glass beads, the wetting dispersant and the silane coupling agent, stirring at 1050rpm for 10.5min, adjusting the rotation speed to 480rpm, adding 300-mesh coarse whiting powder and industrial titanium dioxide, stirring for 10.5min, adjusting the rotation speed to 1580rpm, stirring for 20.5min to obtain a second mixture, uniformly mixing the first mixture with the second mixture, adjusting the rotation speed to 480rpm, stirring for 10.5min, and adding an antifoaming agent to obtain a third mixture. Forming paste: and mixing and stirring No. 425 white cement and water uniformly to obtain paste, and stirring and uniformly mixing the mixture III and the paste according to the weight ratio of 4:1 to obtain the gypsum board coating.
Example 7
The embodiment provides a gypsum board coating, which comprises the following components in parts by weight: 46 parts of acrylic elastic emulsion, 9.5 parts of glass beads, 0.65 part of silane coupling agent, 33 parts of 500-mesh heavy calcium powder, 4.5 parts of common titanium dioxide, 9.5 parts of No. 325 white cement, 1.15 parts of wetting dispersant, 0.25 part of low-viscosity cellulose, 1.15 parts of defoaming agent, 3.5 parts of water and 5mm multiplied by 5mm self-adhesive fiber mesh cloth.
The embodiment also provides a preparation method of the gypsum board coating, which comprises the following steps of mixing the raw materials: mixing low-viscosity cellulose with water, standing for 36h to obtain a first mixture, mixing the acrylic elastic emulsion, the glass beads, the wetting dispersant and the silane coupling agent, stirring at 850rpm for 8.5min, adjusting the rotation speed to 330rpm, adding 500-mesh coarse whiting powder and common titanium dioxide, stirring for 8.5min, adjusting the rotation speed to 1430rpm, stirring for 18.5min to obtain a second mixture, uniformly mixing the first mixture and the second mixture, adjusting the rotation speed to 330rpm, stirring for 8.5min, and adding an antifoaming agent to obtain a third mixture. Forming paste: coating the mesh cloth on the outer surface of the whole gypsum board, mixing and uniformly stirring No. 425 white cement and water to obtain paste, uniformly stirring and uniformly mixing the mixture III and the paste according to the weight ratio of 4:1, and then coating the mixture on the mesh cloth to obtain the gypsum board coating.
Example 8
The embodiment provides a gypsum board coating, which comprises the following components in parts by weight: 50 parts of acrylic elastic emulsion, 10 parts of glass beads, 0.75 part of silane coupling agent, 20 parts of 500-mesh heavy calcium powder, 15 parts of 300-mesh heavy calcium powder, 5 parts of industrial-grade titanium dioxide, 10 parts of 425 # white cement, 1.2 parts of wetting dispersant, 0.3 part of high-viscosity cellulose, 1.3 parts of defoaming agent, 5 parts of water, 1.5 parts of preservative and 5mm multiplied by 5mm of self-adhesive fiber mesh cloth.
The embodiment also provides a preparation method of the gypsum board coating, which comprises the following steps of mixing the raw materials: mixing high-viscosity cellulose with water, standing for 36h to obtain a mixture I, mixing acrylic acid elastic emulsion, glass beads, wetting dispersant and silane coupling agent, stirring at the rotating speed of 1000rpm for 10min, adjusting the rotating speed to 400rpm, adding 500-mesh coarse whiting powder, 300-mesh coarse whiting powder and industrial titanium dioxide, stirring for 10min, adjusting the rotating speed to 1500rpm, stirring for 20min to obtain a mixture II, uniformly mixing the mixture I and the mixture II, adjusting the rotating speed to 400rpm, stirring for 10min, adding defoaming agent to obtain a mixture III, adding preservative to the mixture III, and stirring at the rotating speed of 600rpm for 20min to obtain a mixture IV. Forming paste: coating the mesh cloth on the outer surface of the whole gypsum board, mixing and uniformly stirring No. 425 white cement and water to obtain paste, uniformly stirring and uniformly mixing the mixture III and the paste according to the weight ratio of 4:1, and then coating the mixture on the mesh cloth to obtain the gypsum board coating.
Test example 1
Six gypsum boards produced in the same batch were taken, the gypsum board coatings produced in examples 1 to 5 were uniformly applied to five gypsum boards, and the gypsum boards without coating were designated as comparative examples, and the six gypsum boards were completely immersed in water at the same time, and after 60 minutes, the six gypsum boards were taken out and observed for the presence or absence of skinning, wherein 5 minutes showed almost no skinning and 0 minutes showed severe skinning, and then the six gypsum boards were cut open and observed for the interior thereof, wherein 5 minutes showed almost no and 0 minutes showed severe skinning, and the results were as shown in table 1.
TABLE 1 statistical table of peeling and water-proof results
| Number/item | Peeling | Get up tide |
| Example 1 | 5 points of | 5 points of |
| Example 2 | 5 points of | 5 points of |
| Example 3 | 5 points of | 5 points of |
| Example 4 | 5 points of | 5 points of |
| Example 5 | 5 points of | 5 points of |
| Comparative example | 2 is divided into | 1 minute (1) |
As shown by the results in Table 1, the gypsum boards coated with the gypsum board coatings of examples 1-5 exhibited significantly better skinning and moisture pick-up than the comparative examples, and it can be concluded that the gypsum board coatings produced in examples 1-5 exhibited significant water and moisture resistance.
Test example 2
Six gypsum boards produced in the same batch were taken, the gypsum board coatings produced in examples 1 to 5 were uniformly applied to five gypsum boards, and the uncoated gypsum boards were designated as comparative examples, and the six gypsum boards were simultaneously placed thereon with weights of 10kg, 20kg, 30kg, 40kg and 50kg in this order, and the weighing of the six gypsum boards was observed, and the results are shown in Table 2.
TABLE 2 statistical table for gypsum board bearing condition
As shown by the results in Table 2, the gypsum boards coated with the gypsum board coatings of examples 1-5 are significantly better in load bearing than the comparative examples, and examples 1-5 are significantly better in weighing than examples 1-3 than examples 4 and 5, so it can be concluded that the gypsum board coatings produced by examples 1-5 significantly increase the compressive strength of the gypsum board.
Test example 3
Six gypsum plasterboards produced in the same batch were taken, the gypsum board coatings produced in examples 1 to 5 were uniformly applied to five gypsum plasterboards, and the gypsum plasterboard without the coating was designated as comparative example 1, and a commercially available waterproof gypsum board was taken and designated as comparative example 2, and the water absorption of the seven gypsum plasterboards was measured according to the ASTM standard in the united states, and the results are shown in table 3.
TABLE 3 statistical table of water absorption rate test results
As shown in the results of Table 3, the gypsum boards painted with the gypsum board coatings obtained in examples 1 to 5 have water absorption rates substantially lower than those of ordinary gypsum boards, and the difference between the water absorption rate of the painted gypsum boards and that of ordinary water-absorbent gypsum boards is small, so it can be concluded that the gypsum board coatings obtained in examples 1 to 5 have excellent waterproof effects.
In summary, the embodiments of the present invention provide a gypsum board coating, a preparation method and an application thereof, and have the following advantages and beneficial effects:
the embodiment of the application provides a gypsum board coating, the gypsum board coating is composed of elastic emulsion, glass beads, a silane coupling agent, calcium powder, titanium dioxide, white cement, a wetting dispersant, cellulose, a defoaming agent and water, the gypsum board can be isolated from outside air, water molecules in the air are prevented from entering the gypsum board, and therefore the gypsum board is prevented from peeling, yellowing, cracking and pulverization, the gypsum board can be reinforced, the durability and the pressure resistance of the gypsum board are improved, in addition, the gypsum board coating is directly coated on the outer surface of the gypsum board when in use, and the gypsum board coating is suitable for various gypsum boards, is simple and convenient to use and wide in application range. And when in actual use, the setting rate of the gypsum board can be slowed down after the preservative is added, and the gypsum board is suitable for long-term storage and standby. Through combining 500 mesh coarse whiting powder and 300 mesh coarse whiting powder to use in proportion, can also promote the granular sensation and the whiteness degree of gypsum board coating when both guaranteeing gypsum board coating hardness, make the area of combining of putty and gypsum board bigger, more be difficult to drop, acrylic acid emulsion also can increase the adsorption strength of coating and putty simultaneously, prevents that putty from droing.
The embodiment of the application further provides a preparation method of the gypsum board coating, the preparation method is simple and easy to implement through stirring and uniformly mixing different raw materials, the operation difficulty of operators is greatly reduced, the preparation efficiency of the gypsum board coating is improved, and the preparation of the gypsum board coating is enabled to be rapid and efficient. The mixture III is combined with the paste body according to the weight ratio of 4:1, so that the mixture III is uniformly and fully distributed in the paste body, the prepared gypsum board coating has excellent waterproof, moistureproof, tensile and compressive effects and other beneficial effects in every place after the gypsum board coating is coated on the surface of a gypsum board, and the situation that the waterproof, moistureproof, tensile and compressive effects are weak in a certain place due to uneven distribution of the gypsum board coating is avoided. And each stirring adopts different stirring speeds and stirring time according to different physical properties and chemical properties of the added raw materials, so that the raw materials can be uniformly mixed according to different physical properties of different raw materials, and the raw materials are treated in a targeted manner.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (10)
1. The gypsum board coating is characterized by comprising the following components in parts by weight: 45-55 parts of elastic emulsion, 8-12 parts of glass beads, 0.5-1 part of silane coupling agent, 30-40 parts of calcium powder, 3-8 parts of titanium dioxide, 8-12 parts of white cement, 1-1.5 parts of wetting dispersant, 0.2-0.4 part of cellulose, 1-1.5 parts of defoaming agent and 3-7 parts of water.
2. The gypsum board coating of claim 1, comprising the following components in parts by weight: 50 parts of elastic emulsion, 10 parts of glass beads, 0.75 part of silane coupling agent, 35 parts of calcium powder, 5 parts of titanium dioxide, 10 parts of white cement, 1.2 parts of wetting dispersant, 0.3 part of cellulose, 1.3 parts of defoaming agent and 5 parts of water.
3. The gypsum board coating of claim 2, wherein the calcium powder comprises 500 mesh heavy calcium powder and 300 mesh heavy calcium powder, and the weight ratio of the 500 mesh heavy calcium powder to the 300 mesh heavy calcium powder is 4: 3.
4. The gypsum board coating of claim 3, further comprising a scrim.
5. Use of a gypsum board coating according to any one of claims 1 to 4 for the production of water-and moisture-resistant, pressure-resistant and/or durable gypsum boards.
6. A method of making a gypsum board coating according to any one of claims 1 to 4, comprising the steps of:
mixing raw materials: mixing cellulose and water, standing to obtain a first mixture, mixing the elastic emulsion, the glass beads, the wetting dispersant and the silane coupling agent, stirring for the first time, adding calcium powder and titanium dioxide, stirring for the second time to obtain a second mixture, mixing the first mixture and the second mixture uniformly, stirring for the third time, and adding a defoaming agent to obtain a third mixture;
forming paste: coating the mesh cloth on the surface of the gypsum board, mixing and uniformly stirring the white cement and the water to obtain paste, stirring and uniformly mixing the mixture III and the paste according to the weight ratio, and brushing the mixture III on the surface of the mesh cloth to obtain the gypsum board coating.
7. The gypsum board coating of claim 6, wherein said raw material mixing step further comprises adding a preservative, said adding a preservative comprising the step of adding a preservative to said mixture three and stirring four times.
8. The gypsum board coating of claim 7, wherein the weight ratio of mixture three to the paste is 4: 1.
9. The gypsum board coating of claim 8, wherein the second stirring comprises stirring at 500rpm for 8-12min at 300-.
10. The gypsum board coating according to claim 9, wherein the rotation speed of the first stirring is 800-1200rpm, the time of the first stirring is 8-12min, the rotation speed of the third stirring is 300-500rpm, the time of the third stirring is 8-12min, the rotation speed of the fourth stirring is 500-700rpm, and the time of the fourth stirring is 18-22 min.
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| CN114135071A (en) * | 2022-01-19 | 2022-03-04 | 夏德斌 | Section bar for decoration, manufacturing process and application |
| CN115286342A (en) * | 2022-08-16 | 2022-11-04 | 湖南科技大学 | Self-purification regenerated fiber gypsum board and preparation method thereof |
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