CN111015929A - Cement gypsum-based straw light wall insulation board and preparation method thereof - Google Patents
Cement gypsum-based straw light wall insulation board and preparation method thereof Download PDFInfo
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- CN111015929A CN111015929A CN201911294627.1A CN201911294627A CN111015929A CN 111015929 A CN111015929 A CN 111015929A CN 201911294627 A CN201911294627 A CN 201911294627A CN 111015929 A CN111015929 A CN 111015929A
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- 239000004568 cement Substances 0.000 title claims abstract description 261
- 239000010902 straw Substances 0.000 title claims abstract description 241
- 238000009413 insulation Methods 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000203 mixture Substances 0.000 claims description 107
- 239000002131 composite material Substances 0.000 claims description 106
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- 239000010410 layer Substances 0.000 claims description 56
- 239000004744 fabric Substances 0.000 claims description 51
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- 239000003365 glass fiber Substances 0.000 claims description 50
- 239000002245 particle Substances 0.000 claims description 48
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
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- 239000006229 carbon black Substances 0.000 claims description 5
- 239000011256 inorganic filler Substances 0.000 claims description 5
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 5
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 claims description 5
- 235000011006 sodium potassium tartrate Nutrition 0.000 claims description 5
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- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 4
- 235000019830 sodium polyphosphate Nutrition 0.000 claims description 3
- 239000011325 microbead Substances 0.000 claims description 2
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- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
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- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
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- 235000013305 food Nutrition 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- UKODFQOELJFMII-UHFFFAOYSA-N pentamethyldiethylenetriamine Chemical compound CN(C)CCN(C)CCN(C)C UKODFQOELJFMII-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- -1 polyethylene adipate Polymers 0.000 description 1
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- 239000004626 polylactic acid Substances 0.000 description 1
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- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 239000001476 sodium potassium tartrate Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/0015—Machines or methods for applying the material to surfaces to form a permanent layer thereon on multilayered articles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a cement gypsum-based straw light wall insulation board and a preparation method thereof, and relates to the technical field of building materials. The layers in the insulation board are combined with each other, so that the advantages of the layers are made up, the synergistic effect is achieved, the heat transfer coefficient of the insulation board is small, the insulation performance is very excellent, high strength is kept, the mechanical property is good, and the insulation board is suitable for large-scale popularization and application.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a cement gypsum-based straw light wall insulation board and a preparation method thereof.
Background
At present, building energy conservation becomes an important component of energy sustainable development action in China. With the enhancement of energy-saving consciousness and the wide attention on environmental problems, the development of novel wall materials has become a development trend of the building industry.
China is a big agricultural country, and crop straw resources are very rich. And as the crop yield increases year by year, the straw yield also shows a trend of increasing year by year. However, the long-standing straw treatment problem is always a hot problem which troubles the production and the life of the nation and individuals. The research on the waste straw originally and the manufacture of the waste straw into a novel building material become the subject of attention of numerous scholars at home and abroad.
The gypsum is widely distributed in China and is abundant in storage, and the total storage amount is as high as more than 600 hundred million tons, which is the first in the world. In a long period of time, the total utilization amount of gypsum in China in the aspects of chemical industry, gel materials, agricultural production, food processing, medical drugs and the like only reaches 8 percent. In developed countries such as Europe and America, 80% of gypsum production is applied to building products.
EPS is a light and hydrophobic material prepared by taking polystyrene resin as a main body and adding additives such as foaming agents and the like. The volume of each cubic decimeter contains 300-600 ten thousand independent closed bubbles, and the volume of the contained air is more than 98%, so the composite material has the characteristics of closed pore structure, small water absorption, good water resistance, small density and good heat insulation performance, can be applied to wall materials as an admixture, can reduce the dead weight of walls, has the functions of heat insulation and sound insulation, and is widely applied to building materials.
The Chinese patent with the application number of 201510524902.X discloses a fireproof heat-insulation composite material and a preparation method thereof. The fireproof heat-preservation composite material is prepared by taking the agricultural wastes and the industrial wastes as raw materials, so that the agricultural wastes and the industrial wastes are changed into valuable materials, and the fireproof heat-preservation composite material has good fireproof performance, heat-insulation performance and compression and crack resistance, so that the fireproof heat-preservation composite material has wide application prospect. But its insulating effect and strength are slightly low.
The Chinese patent with the application number of 201611207895.1 discloses a temperature and humidity self-adjusting protection plate for a building and a preparation method thereof, wherein the protection plate comprises a heat preservation layer and a temperature and humidity adjusting layer, and the raw materials of the heat preservation layer comprise the following components: 2-phenoxyethyl acrylate, ammonium persulfate, cement, EPS particles, hydroxypropyl methylcellulose and polylactic acid; the temperature and humidity adjusting layer comprises the following raw materials: gypsum powder, starch, straw powder, sodium polyacrylate, sodium formaldehyde sulfoxylate, acrylic acid, pentamethyldiethylenetriamine, polyvinyl alcohol, polyethylene adipate glycol and trimethylolpropane. The heat-insulating layer and the temperature and humidity adjusting layer are respectively prepared in the preparation process, and then the heat-insulating layer and the temperature and humidity adjusting layer are compounded, dried and cured to obtain the composite material. The temperature and humidity self-adjusting protective plate for the building, provided by the invention, has excellent heat preservation and temperature and humidity adjusting performances, and is good in heat preservation effect but slightly low in strength.
In the existing heat insulation materials, the heat insulation materials with excellent heat insulation performance and mechanical performance are not many, and along with the development of the market, the requirements on the heat insulation performance and the mechanical performance of the heat insulation materials are higher and higher, so that the development of the heat insulation materials with excellent comprehensive performance has a wide market prospect.
Disclosure of Invention
The invention aims to provide a cement gypsum-based straw light wall insulation board and a preparation method thereof.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a cement gypsum base straw light wall body heated board, includes low density cement gypsum base straw interior bushing plate, glass fiber net check cloth, high density cement gypsum base straw exterior panel, cement gypsum protective layer, and both sides veneer has glass fiber net check cloth around the gypsum base straw interior bushing plate, and the skin of glass fiber net check cloth all is equipped with high density cement gypsum base straw exterior panel, and the high density cement gypsum base straw exterior panel outside is equipped with the cement gypsum protective layer.
Preferably, the outer panel of the high-density cement gypsum-based straw has the thickness as follows: 3-7 cm; the thickness of the low-density cement gypsum-based straw lining plate is 5-10 cm; the thickness of the glass fiber mesh cloth is 2-3 mm; the thickness of the cement gypsum protective layer is 0.5-1.5 cm.
Preferably, the high-density cement gypsum-based straw outer panel comprises the following components in parts by weight: 50-60 parts of Portland cement, 20-30 parts of semi-hydrated gypsum, 6-10 parts of vitrified micro-beads, 20-30 parts of blast furnace slag, 1-1.5 parts of asbestos fiber, 1.5-3 parts of straw, 0.5-1.5 parts of waste EPS particles and 0.2-0.5 part of inorganic filler.
Preferably, the particle size of the vitrified micro bubbles is 0.2-1 mm; the inorganic filler is at least one of white carbon black and titanium dioxide.
Preferably, the low-density cement gypsum-based straw inner lining board comprises the following components in parts by weight: 30-45 parts of Portland cement, 18-25 parts of semi-hydrated gypsum, 20-30 parts of blast furnace slag, 6-9 parts of straw, 1-3 parts of sepiolite fiber and 2.5-4 parts of waste EPS particles.
Preferably, the preparation method of the low-density cement gypsum-based straw lining board comprises the following steps: fully mixing Portland cement, semi-hydrated gypsum, blast furnace slag, straw, sepiolite fiber and waste EPS particles according to the formula ratio to obtain a mixture; mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to fully mix the mixture to obtain mortar; pouring the mortar into a mold, standing for 20-28h, demolding, and curing under natural environment for 5-7 days.
Preferably, the straw is one of corn straw, cotton straw and peanut straw, and the length of the straw is 0.3-1 cm; the particle diameter of the waste EPS particles is 2-4mm, and the bulk density is 15-18kg/m3(ii) a The grain size of the blast furnace slag is less than or equal to 3 mm.
Preferably, the cement gypsum protective layer comprises the following components in parts by weight: 40-50 parts of Portland cement, 40-50 parts of semi-hydrated gypsum, 15-20 parts of shale powder, 5-10 parts of river sand, 0.5-1 part of asbestos fiber and 0.1-0.3 part of retarder. Preferably, the retarder is at least one of potassium sodium tartrate, sodium polyphosphate and sodium hexametaphosphate.
The preparation method of the cement gypsum-based straw lightweight wall insulation board comprises the following steps:
(1) gluing a layer of glass fiber mesh cloth on the front side surface and the rear side surface of the low-density cement gypsum-based straw lining plate through an adhesive, wherein four edges of the glass fiber mesh cloth are aligned with four edges of the low-density cement gypsum-based straw lining plate to prepare a composite plate I;
(2) spreading a layer of high-density cement gypsum-based straw outer panel mortar on the bottom surface of the mold I, then putting the composite board I, enabling four surfaces of the composite board I to be in contact with the four surfaces of the mold I, pouring a layer of high-density cement gypsum-based straw outer panel mortar on the composite board I, enabling the mortar to coat the front surface and the rear surface of the composite board I, standing for 15-20 hours, then demolding, curing for 7-10 days under natural environment conditions, forming high-density cement gypsum-based straw outer panels on the front side and the rear side of the composite board I and tightly combining the high-density cement gypsum-based straw outer panels with the composite board I to prepare a composite;
(3) and (2) spreading a layer of cement gypsum mixture on the bottom surface of the mould II, then putting the composite board II, enabling four surfaces of the composite board II to be just in contact with the four surfaces of the mould II, pouring a layer of cement gypsum mixture on the composite board II, enabling the cement gypsum mixture to coat the front surface and the rear surface of the composite board II, standing for 10-15 hours, then demoulding, curing for 5-7 days under natural environment conditions, forming cement gypsum protective layers on the front side and the rear side of the composite board II and tightly combining the cement gypsum protective layers with the cement gypsum protective layers to prepare the cement gypsum-based straw lightweight wall insulation board.
The innermost layer of the heat insulation board is a low-density cement gypsum-based straw lining board, the lining board contains more straws and waste EPS particles, the waste EPS particles and a proper amount of cement and semi-hydrated gypsum are used as gel materials, aggregate blast furnace slag is added, and a proper amount of sepiolite fibers are filled, so that the lining board has good heat insulation and sound insulation properties, and meanwhile, better strength is kept. Because the straw and the waste EPS particles are more, the density of the lining plate is low, and the quality of the wall body is obviously reduced.
Glass fiber gridding cloth is glued on the front side and the rear side of the low-density cement gypsum-based straw inner lining plate through viscose layers, so that the strength of the heat-insulation plate can be enhanced, and the heat-insulation and sound-insulation effects are enhanced. The heat insulation board can also be used as a skeleton structure of the heat insulation board, so that the structural performance of the heat insulation board is more stable, and cracks of the heat insulation board are prevented from being generated.
The outer layer of the glass fiber mesh cloth is provided with the high-density cement gypsum-based straw outer panel, the straw and waste EPS particles contained in the high-density cement gypsum-based straw outer panel are less compared with the inner lining board, a proper amount of cement and semi-hydrated gypsum are matched, a proper amount of vitrified micro bubbles, blast furnace slag, asbestos fiber and inorganic filler are added, the density of the high-density cement gypsum-based straw outer panel is higher than that of the inner lining board, and the high-density cement gypsum-based straw outer panel has higher strength, so that the strength of the heat insulation board is integrally improved, and meanwhile, the heat insulation and sound. And finally, a thinner cement gypsum protective layer is arranged on the outer panel, and the protective layer does not contain straw and EPS particles, so that the fire resistance of the insulation board can be improved to a certain extent.
The layers in the insulation board are combined with each other, so that the advantages of the layers are made up, the synergistic effect is achieved, the heat transfer coefficient of the insulation board is small, the insulation performance is very excellent, high strength is kept, the mechanical property is good, and the insulation board is suitable for large-scale popularization and application.
When the insulation board is prepared, blast furnace slag and straw are used, and waste EPS is reused, so that waste materials can be changed into valuable materials, the environmental pollution can be reduced, and the production cost can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a top view of the structure of the cement gypsum-based straw lightweight wall insulation board of the invention;
in the figure: 1-low density cement gypsum based straw liner board; 2-fiberglass mesh cloth; 3-high density cement gypsum based straw outer panel; 4-cement gypsum protective layer.
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 with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. 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.
Example 1:
the utility model provides a cement gypsum base straw light wall body heated board, including low density cement gypsum base straw interior lining board 1, glass fiber net check cloth 2, high density cement gypsum base straw exterior panel 3, cement gypsum protective layer 4, both sides veneer has glass fiber net check cloth 2 around the low density cement gypsum base straw interior lining board 1, the skin of glass fiber net check cloth 2 all is equipped with high density cement gypsum base straw exterior panel 3, the 3 outsides of high density cement gypsum base straw exterior panel are equipped with cement gypsum protective layer 4. The thickness of the high-density cement gypsum-based straw outer panel 3 is 5 cm; the thickness of the low-density cement gypsum-based straw inner lining plate 1 is 7 cm; the thickness of the glass fiber mesh cloth 2 is 2.5 mm; the thickness of the cement gypsum protective layer 4 is 0.8 cm.
The preparation method of the cement gypsum-based straw lightweight wall insulation board comprises the following steps:
(1) preparing a low-density cement gypsum-based straw inner lining plate 1: fully mixing 40 parts of Portland cement, 20 parts of semi-hydrated gypsum, 25 parts of blast furnace slag, 7 parts of straw, 2 parts of sepiolite fiber and 3 parts of waste EPS particles to obtain a mixture; mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to fully mix the mixture to obtain mortar; pouring the mortar into a mold, standing for 25h, demolding, and curing under natural environment for 6 days to obtain the mortar.
A layer of glass fiber mesh cloth 2 is glued on the front side face and the rear side face of the low-density cement gypsum-based straw inner liner plate 1 through an adhesive, and four edges of the glass fiber mesh cloth 2 are aligned with four edges of the low-density cement gypsum-based straw inner liner plate 1 to prepare a composite plate I.
(2) Preparing high-density cement gypsum-based straw outer panel mortar: fully mixing 56 parts of portland cement, 28 parts of semi-hydrated gypsum, 8 parts of vitrified micro bubbles (the particle size is 0.2-1mm), 26 parts of blast furnace slag, 1.5 parts of asbestos fiber, 2 parts of straws, 1 part of waste EPS particles and 0.3 part of titanium dioxide to obtain a mixture, mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to obtain high-density cement gypsum-based straw outer panel mortar;
spreading a layer of high-density cement gypsum-based straw outer panel mortar on the bottom surface of the mold I, then putting the composite board I, enabling four surfaces of the composite board I to be in contact with the four surfaces of the mold I, pouring a layer of high-density cement gypsum-based straw outer panel mortar on the composite board I, enabling the mortar to coat the front surface and the rear surface of the composite board I, standing for 18 hours, then demolding, curing for 8 days under natural environment conditions, forming high-density cement gypsum-based straw outer panels 3 on the front side and the rear side of the composite board I and tightly combining the high-density cement gypsum-based straw outer panels with the composite board I to prepare a composite;
(3) preparing a cement gypsum mixture: fully mixing 45 parts of portland cement, 45 parts of semi-hydrated gypsum, 18 parts of shale powder, 8 parts of river sand, 0.8 part of asbestos fiber and 0.2 part of sodium hexametaphosphate to obtain a mixture, mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to obtain a cement-gypsum mixture;
and (2) spreading a layer of cement gypsum mixture on the bottom surface of the mold II, then putting the composite board II, enabling four surfaces of the composite board II to be just in contact with four surfaces of the mold II, pouring a layer of cement gypsum mixture on the composite board II, enabling the cement gypsum mixture to coat the front surface and the rear surface of the composite board II, standing for 12 hours, then demoulding, maintaining for 6 days under natural environment conditions, forming cement gypsum protective layers 4 on the front side and the rear side of the composite board II and tightly combining the cement gypsum protective layers with the cement gypsum protective layers to prepare the cement gypsum-based straw lightweight wall insulation board.
The straws used in the embodiment are corn straws, and the length of the straws is 0.3-1 cm; the particle size of the waste EPS particles is 3mm, and the bulk density is 16.7kg/m3(ii) a The grain size of the blast furnace slag is less than or equal to 3 mm.
Example 2:
the utility model provides a cement gypsum base straw light wall body heated board, including low density cement gypsum base straw interior lining board 1, glass fiber net check cloth 2, high density cement gypsum base straw exterior panel 3, cement gypsum protective layer 4, both sides veneer has glass fiber net check cloth 2 around the low density cement gypsum base straw interior lining board 1, the skin of glass fiber net check cloth 2 all is equipped with high density cement gypsum base straw exterior panel 3, the 3 outsides of high density cement gypsum base straw exterior panel are equipped with cement gypsum protective layer 4. The thickness of the high-density cement gypsum-based straw outer panel 3 is 4 cm; the thickness of the low-density cement gypsum-based straw inner lining plate 1 is 6 cm; the thickness of the glass fiber mesh cloth 2 is 3 mm; the thickness of the cement gypsum protective layer 4 is 1 cm.
The preparation method of the cement gypsum-based straw lightweight wall insulation board comprises the following steps:
(1) preparing a low-density cement gypsum-based straw inner lining plate 1: fully mixing 35 parts of Portland cement, 20 parts of semi-hydrated gypsum, 25 parts of blast furnace slag, 7 parts of straws, 1.53 parts of sepiolite fibers and 3 parts of waste EPS particles to obtain a mixture; mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to fully mix the mixture to obtain mortar; pouring the mortar into a mold, standing for 25h, demolding, and curing under natural environment for 7 days to obtain the mortar.
Gluing a layer of glass fiber mesh cloth 2 on the front side surface and the rear side surface of the low-density cement gypsum-based straw inner liner plate 1 through an adhesive, wherein four edges of the glass fiber mesh cloth 2 are aligned with four edges of the low-density cement gypsum-based straw inner liner plate 1 to prepare a composite plate I;
(2) preparing high-density cement gypsum-based straw outer panel mortar: fully mixing 58 parts of portland cement, 26 parts of semi-hydrated gypsum, 7 parts of vitrified micro bubbles (with the particle size of 0.2-1mm), 30 parts of blast furnace slag, 1 part of asbestos fiber, 2 parts of straws, 1 part of waste EPS (expandable polystyrene) particles and 0.4 part of white carbon black to obtain a mixture, mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to obtain high-density cement gypsum-based straw outer panel mortar;
spreading a layer of high-density cement gypsum-based straw outer panel mortar on the bottom surface of the mold I, then putting the composite board I, enabling four surfaces of the composite board I to be in contact with the four surfaces of the mold I, pouring a layer of high-density cement gypsum-based straw outer panel mortar on the composite board I, enabling the mortar to coat the front surface and the rear surface of the composite board I, standing for 18 hours, then demolding, curing for 8 days under natural environment conditions, forming high-density cement gypsum-based straw outer panels 3 on the front side and the rear side of the composite board I and tightly combining the high-density cement gypsum-based straw outer panels with the composite board I to prepare a composite;
(3) preparing a cement gypsum mixture: fully mixing 48 parts of portland cement, 45 parts of semi-hydrated gypsum, 16 parts of shale powder, 6 parts of river sand, 0.7 part of asbestos fiber and 0.2 part of potassium sodium tartrate to obtain a mixture, mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to obtain a cement gypsum mixture;
and (2) spreading a layer of cement gypsum mixture on the bottom surface of the mold II, then putting the composite board II, enabling four surfaces of the composite board II to be just in contact with four surfaces of the mold II, pouring a layer of cement gypsum mixture on the composite board II, enabling the cement gypsum mixture to coat the front surface and the rear surface of the composite board II, standing for 12 hours, then demoulding, maintaining for 6 days under natural environment conditions, forming cement gypsum protective layers 4 on the front side and the rear side of the composite board II and tightly combining the cement gypsum protective layers with the cement gypsum protective layers to prepare the cement gypsum-based straw lightweight wall insulation board.
The straw used in the embodiment is one of corn straw, cotton straw and peanut straw, and the length of the straw is 0.3-1 cm; the particle size of the waste EPS particles is 2mm, and the bulk density is 15kg/m3(ii) a The grain size of the blast furnace slag is less than or equal to 3 mm.
Example 3:
the utility model provides a cement gypsum base straw light wall body heated board, including low density cement gypsum base straw interior lining board 1, glass fiber net check cloth 2, high density cement gypsum base straw exterior panel 3, cement gypsum protective layer 4, both sides veneer has glass fiber net check cloth 2 around the low density cement gypsum base straw interior lining board 1, the skin of glass fiber net check cloth 2 all is equipped with high density cement gypsum base straw exterior panel 3, the 3 outsides of high density cement gypsum base straw exterior panel are equipped with cement gypsum protective layer 4. The thickness of the high-density cement gypsum-based straw outer panel 3 is 7 cm; the thickness of the low-density cement gypsum-based straw inner lining plate 1 is 8 cm; the thickness of the glass fiber mesh cloth 2 is 2 mm; the thickness of the cement gypsum protective layer 4 is 0.8 cm.
The preparation method of the cement gypsum-based straw lightweight wall insulation board comprises the following steps:
(1) preparing a low-density cement gypsum-based straw inner lining plate 1: fully mixing 45 parts of Portland cement, 20 parts of semi-hydrated gypsum, 23 parts of blast furnace slag, 7 parts of straw, 1 part of sepiolite fiber and 2.5 parts of waste EPS particles to obtain a mixture; mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to fully mix the mixture to obtain mortar; pouring the mortar into a mold, standing for 25h, demolding, and curing under natural environment for 7 days to obtain the mortar.
A layer of glass fiber mesh cloth 2 is glued on the front side face and the rear side face of the low-density cement gypsum-based straw inner liner plate 1 through an adhesive, and four edges of the glass fiber mesh cloth 2 are aligned with four edges of the low-density cement gypsum-based straw inner liner plate 1 to prepare a composite plate I.
(2) Preparing high-density cement gypsum-based straw outer panel mortar: fully mixing 60 parts of portland cement, 25 parts of semi-hydrated gypsum, 9 parts of vitrified micro bubbles (with the particle size of 0.2-1mm), 20 parts of blast furnace slag, 1 part of asbestos fiber, 2 parts of straws, 1 part of waste EPS (expandable polystyrene) particles and 0.5 part of white carbon black to obtain a mixture, mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to obtain high-density cement gypsum-based straw outer panel mortar;
spreading a layer of high-density cement gypsum-based straw outer panel mortar on the bottom surface of the mold I, then putting the composite board I, enabling four surfaces of the composite board I to be in contact with the four surfaces of the mold I, pouring a layer of high-density cement gypsum-based straw outer panel mortar on the composite board I, enabling the mortar to coat the front surface and the rear surface of the composite board I, standing for 20 hours, then demolding, curing for 8 days under natural environment conditions, forming high-density cement gypsum-based straw outer panels 3 on the front side and the rear side of the composite board I, and tightly combining the high-density cement gypsum-based straw outer panels with the composite board I to prepare the.
(3) Preparing a cement gypsum mixture: 50 parts of Portland cement, 45 parts of semi-hydrated gypsum, 18 parts of shale powder, 10 parts of river sand, 0.5 part of asbestos fiber and 0.3 part of sodium polyphosphate are fully mixed to obtain a mixture, and the mixture is mixed with a proper amount of water and then put into a stirrer to be stirred to obtain a cement-gypsum mixture.
And (2) spreading a layer of cement gypsum mixture on the bottom surface of the mold II, then putting the composite board II, enabling four surfaces of the composite board II to be just in contact with four surfaces of the mold II, pouring a layer of cement gypsum mixture on the composite board II, enabling the cement gypsum mixture to coat the front surface and the rear surface of the composite board II, standing for 15 hours, then demoulding, curing for 6 days under natural environment conditions, forming cement gypsum protective layers 4 on the front side and the rear side of the composite board II and tightly combining the cement gypsum protective layers with the cement gypsum protective layers to prepare the cement gypsum-based straw lightweight wall insulation board.
The straw used in the embodiment is one of corn straw, cotton straw and peanut straw, and the length of the straw is 0.3-1 cm; the particle size of the waste EPS particles is 3mm, and the bulk density is 16.7kg/m3(ii) a The grain size of the blast furnace slag is less than or equal to 3 mm.
Example 4:
the utility model provides a cement gypsum base straw light wall body heated board, including low density cement gypsum base straw interior lining board 1, glass fiber net check cloth 2, high density cement gypsum base straw exterior panel 3, cement gypsum protective layer 4, both sides veneer has glass fiber net check cloth 2 around the low density cement gypsum base straw interior lining board 1, the skin of glass fiber net check cloth 2 all is equipped with high density cement gypsum base straw exterior panel 3, the 3 outsides of high density cement gypsum base straw exterior panel are equipped with cement gypsum protective layer 4. The thickness of the high-density cement gypsum-based straw outer panel 3 is 3 cm; the thickness of the low-density cement gypsum-based straw inner liner plate 1 is 5 cm; the thickness of the glass fiber mesh cloth 2 is 3 mm; the thickness of the cement gypsum protective layer 4 is 0.5 cm.
The preparation method of the cement gypsum-based straw lightweight wall insulation board comprises the following steps:
(1) preparing a low-density cement gypsum-based straw inner lining plate 1: fully mixing 30 parts of Portland cement, 18 parts of semi-hydrated gypsum, 20 parts of blast furnace slag, 6 parts of straw, 1.5 parts of sepiolite fiber and 4 parts of waste EPS particles to obtain a mixture; mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to fully mix the mixture to obtain mortar; pouring the mortar into a mold, standing for 20h, demolding, and curing under natural environment for 5 days to obtain the mortar.
A layer of glass fiber mesh cloth 2 is glued on the front side face and the rear side face of the low-density cement gypsum-based straw inner liner plate 1 through an adhesive, and four edges of the glass fiber mesh cloth 2 are aligned with four edges of the low-density cement gypsum-based straw inner liner plate 1 to prepare a composite plate I.
(2) Preparing high-density cement gypsum-based straw outer panel mortar: 55 parts of portland cement, 20 parts of semi-hydrated gypsum, 6 parts of vitrified micro bubbles (with the particle size of 0.2-1mm), 30 parts of blast furnace slag, 1.5 parts of asbestos fiber, 1.5 parts of straw, 1.5 parts of waste EPS particles and 0.2 part of titanium dioxide are fully mixed to obtain a mixture, and the mixture is mixed with a proper amount of water and then put into a stirrer to be stirred to obtain the high-density cement gypsum-based straw outer panel mortar.
Spreading a layer of high-density cement gypsum-based straw outer panel mortar on the bottom surface of the mold I, then putting the composite board I, enabling four surfaces of the composite board I to be in contact with the four surfaces of the mold I, pouring a layer of high-density cement gypsum-based straw outer panel mortar on the composite board I, enabling the mortar to coat the front surface and the rear surface of the composite board I, standing for 15 hours, then demolding, curing for 7 days under natural environment conditions, forming high-density cement gypsum-based straw outer panels 3 on the front side and the rear side of the composite board I, and tightly combining the high-density cement gypsum-based straw outer panels with the composite board I to prepare the.
(3) Preparing a cement gypsum mixture: 40 parts of Portland cement, 50 parts of semi-hydrated gypsum, 15 parts of shale powder, 5 parts of river sand, 1 part of asbestos fiber and 0.2 part of potassium sodium tartrate are fully mixed to obtain a mixture, and the mixture is mixed with a proper amount of water and then put into a stirrer to be stirred to obtain a cement gypsum mixture.
And (2) spreading a layer of cement gypsum mixture on the bottom surface of the mold II, then putting the composite board II, enabling four surfaces of the composite board II to be just in contact with four surfaces of the mold II, pouring a layer of cement gypsum mixture on the composite board II, enabling the cement gypsum mixture to coat the front surface and the rear surface of the composite board II, standing for 10 hours, then demoulding, maintaining for 5 days under natural environment conditions, forming cement gypsum protective layers 4 on the front side and the rear side of the composite board II and tightly combining the cement gypsum protective layers with the cement gypsum protective layers to prepare the cement gypsum-based straw lightweight wall insulation board.
The straw used in the embodiment is one of corn straw, cotton straw and peanut straw, and the length of the straw is 0.3-1 cm; the particle size of the waste EPS particles is 2mm, and the bulk density is 15kg/m3(ii) a The grain size of the blast furnace slag is less than or equal to 3 mm.
Example 5:
the utility model provides a cement gypsum base straw light wall body heated board, including low density cement gypsum base straw interior lining board 1, glass fiber net check cloth 2, high density cement gypsum base straw exterior panel 3, cement gypsum protective layer 4, both sides veneer has glass fiber net check cloth 2 around the low density cement gypsum base straw interior lining board 1, the skin of glass fiber net check cloth 2 all is equipped with high density cement gypsum base straw exterior panel 3, the 3 outsides of high density cement gypsum base straw exterior panel are equipped with cement gypsum protective layer 4. The thickness of the high-density cement gypsum-based straw outer panel 3 is 4 cm; the thickness of the low-density cement gypsum-based straw inner liner plate 1 is 10 cm; the thickness of the glass fiber mesh cloth 2 is 2.5 mm; the thickness of the cement gypsum protective layer 4 is 1.5 cm.
The preparation method of the cement gypsum-based straw lightweight wall insulation board comprises the following steps:
(1) preparing a low-density cement gypsum-based straw inner lining plate 1: fully mixing 42 parts of Portland cement, 25 parts of semi-hydrated gypsum, 30 parts of blast furnace slag, 9 parts of straw, 3 parts of sepiolite fiber and 3 parts of waste EPS particles to obtain a mixture; mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to fully mix the mixture to obtain mortar; pouring the mortar into a mold, standing for 28h, demolding, and curing under natural environment for 6 days to obtain the mortar.
A layer of glass fiber mesh cloth 2 is glued on the front side face and the rear side face of the low-density cement gypsum-based straw inner liner plate 1 through an adhesive, and four edges of the glass fiber mesh cloth 2 are aligned with four edges of the low-density cement gypsum-based straw inner liner plate 1 to prepare a composite plate I.
(2) Preparing high-density cement gypsum-based straw outer panel mortar: 50 parts of portland cement, 30 parts of semi-hydrated gypsum, 10 parts of vitrified micro bubbles (with the particle size of 0.2-1mm), 28 parts of blast furnace slag, 1 part of asbestos fiber, 3 parts of straws, 0.5 part of waste EPS particles and 0.3 part of white carbon black are fully mixed to obtain a mixture, and the mixture is mixed with a proper amount of water and then put into a stirrer to be stirred to obtain the high-density cement gypsum-based straw outer panel mortar.
Spreading a layer of high-density cement gypsum-based straw outer panel mortar on the bottom surface of the mold I, then putting the composite board I, enabling four surfaces of the composite board I to be in contact with the four surfaces of the mold I, pouring a layer of high-density cement gypsum-based straw outer panel mortar on the composite board I, enabling the mortar to coat the front surface and the rear surface of the composite board I, standing for 18 hours, then demolding, curing for 10 days under natural environment conditions, forming high-density cement gypsum-based straw outer panels 3 on the front side and the rear side of the composite board I and tightly combining the high-density cement gypsum-based straw outer panels with the composite board I, and preparing the.
(3) Preparing a cement gypsum mixture: the method comprises the following steps of fully mixing 48 parts of portland cement, 40 parts of semi-hydrated gypsum, 20 parts of shale powder, 8 parts of river sand, 0.8 part of asbestos fiber and 0.1-0.3 part of sodium hexametaphosphate to obtain a mixture, mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer to stir to obtain a cement-gypsum mixture.
And (2) spreading a layer of cement gypsum mixture on the bottom surface of the mold II, then putting the composite board II, enabling four surfaces of the composite board II to be just in contact with four surfaces of the mold II, pouring a layer of cement gypsum mixture on the composite board II, enabling the cement gypsum mixture to coat the front surface and the rear surface of the composite board II, standing for 12 hours, then demoulding, maintaining for 7 days under natural environment conditions, forming cement gypsum protective layers 4 on the front side and the rear side of the composite board II and tightly combining the cement gypsum protective layers with the cement gypsum protective layers to prepare the cement gypsum-based straw lightweight wall insulation board.
The straw used in the embodiment is one of corn straw, cotton straw and peanut straw, and the length of the straw is 0.3-1 cm; the used waste EPS particles have a particle size of 4mm and a bulk density of 18kg/m3(ii) a The grain size of the blast furnace slag is less than or equal to 3 mm.
Example 6:
the utility model provides a cement gypsum base straw light wall body heated board, including low density cement gypsum base straw interior lining board 1, glass fiber net check cloth 2, high density cement gypsum base straw exterior panel 3, cement gypsum protective layer 4, both sides veneer has glass fiber net check cloth 2 around the low density cement gypsum base straw interior lining board 1, the skin of glass fiber net check cloth 2 all is equipped with high density cement gypsum base straw exterior panel 3, the 3 outsides of high density cement gypsum base straw exterior panel are equipped with cement gypsum protective layer 4. The thickness of the high-density cement gypsum-based straw outer panel 3 is as follows: 5 cm; the thickness of the low-density cement gypsum-based straw inner lining plate 1 is 8 cm; the thickness of the glass fiber mesh cloth 2 is 2 mm; the thickness of the cement gypsum protective layer 4 is 1 cm.
The preparation method of the cement gypsum-based straw lightweight wall insulation board comprises the following steps:
(1) preparing a low-density cement gypsum-based straw inner lining plate 1: fully mixing 38 parts of Portland cement, 20 parts of semi-hydrated gypsum, 25 parts of blast furnace slag, 8 parts of straw, 2 parts of sepiolite fiber and 3 parts of waste EPS particles to obtain a mixture; mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to fully mix the mixture to obtain mortar; pouring the mortar into a mold, standing for 25h, demolding, and curing under natural environment for 6 days to obtain the mortar.
Gluing a layer of glass fiber mesh cloth 2 on the front side surface and the rear side surface of the low-density cement gypsum-based straw inner liner plate 1 through an adhesive, wherein four edges of the glass fiber mesh cloth 2 are aligned with four edges of the low-density cement gypsum-based straw inner liner plate 1 to prepare a composite plate I;
(2) preparing high-density cement gypsum-based straw outer panel mortar: 55 parts of portland cement, 26 parts of semi-hydrated gypsum, 8 parts of vitrified micro bubbles (with the particle size of 0.2-1mm), 25 parts of blast furnace slag, 1.2 parts of asbestos fiber, 2 parts of straw, 1 part of waste EPS particles and 0.3 part of titanium dioxide are fully mixed to obtain a mixture, and the mixture is mixed with a proper amount of water and then put into a stirrer to be stirred to obtain the high-density cement gypsum-based straw outer panel mortar.
Spreading a layer of high-density cement gypsum-based straw outer panel mortar on the bottom surface of the mold I, then putting the composite board I, enabling four surfaces of the composite board I to be in contact with the four surfaces of the mold I, pouring a layer of high-density cement gypsum-based straw outer panel mortar on the composite board I, enabling the mortar to coat the front surface and the rear surface of the composite board I, standing for 18 hours, then demolding, curing for 8 days under natural environment conditions, forming high-density cement gypsum-based straw outer panels 3 on the front side and the rear side of the composite board I, and tightly combining the high-density cement gypsum-based straw outer panels with the composite board I to prepare the.
(3) Preparing a cement gypsum mixture: the method comprises the following steps of fully mixing 46 parts of portland cement, 48 parts of semi-hydrated gypsum, 18 parts of shale powder, 8 parts of river sand, 0.8 part of asbestos fiber and 0.2 part of sodium potassium tartrate to obtain a mixture, mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer to stir to obtain a cement-gypsum mixture.
And (2) spreading a layer of cement gypsum mixture on the bottom surface of the mold II, then putting the composite board II, enabling four surfaces of the composite board II to be just in contact with four surfaces of the mold II, pouring a layer of cement gypsum mixture on the composite board II, enabling the cement gypsum mixture to coat the front surface and the rear surface of the composite board II, standing for 12 hours, then demoulding, maintaining for 6 days under natural environment conditions, forming cement gypsum protective layers 4 on the front side and the rear side of the composite board II and tightly combining the cement gypsum protective layers with the cement gypsum protective layers to prepare the cement gypsum-based straw lightweight wall insulation board.
The straw used in the embodiment is one of corn straw, cotton straw and peanut straw, and the length of the straw is 0.3-1 cm; the particle size of the waste EPS particles is 2mm, and the bulk density is 15kg/m3(ii) a The grain size of the blast furnace slag is less than or equal to 3 mm.
Testing the heat preservation characteristic:
the test pieces prepared in examples 1 to 6 were subjected to performance tests, and the specific test results are shown in table 1.
Table 1:
as can be seen from Table 1, the insulation board prepared by the method has high compressive strength and flexural strength, good mechanical property and heat transfer coefficient as low as 0.018W/m2K is excellent in heat insulation performance and superior to a common cement gypsum-based heat insulation material, and meanwhile, the heat insulation board is good in sound insulation performance, strong in fire resistance, certain in air permeability and excellent in comprehensive performance, and can meet the requirement of consumers on high performance of the heat insulation board.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The cement gypsum-based straw light wall insulation board is characterized by comprising a low-density cement gypsum-based straw inner lining board, glass fiber gridding cloth, a high-density cement gypsum-based straw outer panel and a cement gypsum protection layer, wherein the glass fiber gridding cloth is glued on the front side and the rear side of the low-density cement gypsum-based straw inner lining board, the high-density cement gypsum-based straw outer panel is arranged on the outer layer of the glass fiber gridding cloth, and the cement gypsum protection layer is arranged on the outer side of the high-density cement gypsum-based straw outer panel.
2. The cement gypsum-based straw light wall insulation board according to claim 1, wherein the thickness of the high-density cement gypsum-based straw outer panel is 3-7 cm; the thickness of the low-density cement gypsum-based straw lining plate is 5-10 cm; the thickness of the glass fiber mesh cloth is 2-3 mm; the thickness of the cement gypsum protective layer is 0.5-1.5 cm.
3. The cement gypsum-based straw light wall insulation board according to claim 1, wherein the high-density cement gypsum-based straw outer panel comprises the following components in parts by weight: 50-60 parts of Portland cement, 20-30 parts of semi-hydrated gypsum, 6-10 parts of vitrified micro-beads, 20-30 parts of blast furnace slag, 1-1.5 parts of asbestos fiber, 1.5-3 parts of straw, 0.5-1.5 parts of waste EPS particles and 0.2-0.5 part of inorganic filler.
4. The cement gypsum-based straw light wall insulation board according to claim 3, wherein the particle size of the vitrified micro bubbles is 0.2-1 mm; the inorganic filler is at least one of white carbon black and titanium dioxide.
5. The cement gypsum-based straw light wall insulation board according to claim 1, wherein the low-density cement gypsum-based straw lining board comprises the following components in parts by weight: 30-45 parts of Portland cement, 18-25 parts of semi-hydrated gypsum, 20-30 parts of blast furnace slag, 6-9 parts of straw, 1-3 parts of sepiolite fiber and 2.5-4 parts of waste EPS particles.
6. The cement gypsum-based straw lightweight wall insulation board according to claim 4, wherein the preparation method of the low-density cement gypsum-based straw lining board comprises the following steps: fully mixing Portland cement, semi-hydrated gypsum, blast furnace slag, straw, sepiolite fiber and waste EPS particles according to the formula ratio to obtain a mixture; mixing the mixture with a proper amount of water, and then putting the mixture into a stirrer for stirring to fully mix the mixture to obtain mortar; pouring the mortar into a mold, standing for 20-28h, demolding, and curing under natural environment for 5-7 days.
7. The cement gypsum-based straw light wall insulation board according to any one of claims 3 to 6, wherein the straw is one of corn straw, cotton straw and peanut straw, and the straw has a length of 0.3-1 cm; the particle size of the waste EPS particles is 2-4mm, and the bulk density is 15-18kg/m3(ii) a The grain size of the blast furnace slag is less than or equal to 3 mm.
8. The cement gypsum-based straw light wall insulation board according to claim 1, wherein the cement gypsum protective layer comprises the following components in parts by weight: 40-50 parts of Portland cement, 40-50 parts of semi-hydrated gypsum, 15-20 parts of shale powder, 5-10 parts of river sand, 0.5-1 part of asbestos fiber and 0.1-0.3 part of retarder.
9. The cement gypsum-based straw light wall insulation board according to claim 8, wherein the retarder is at least one of potassium sodium tartrate, sodium polyphosphate and sodium hexametaphosphate.
10. The preparation method of the cement gypsum based straw lightweight wall insulation board according to any one of claims 1 to 5 and 8 to 9, which is characterized by comprising the following steps:
(1) gluing a layer of glass fiber mesh cloth on the front side surface and the rear side surface of the low-density cement gypsum-based straw lining plate through an adhesive, wherein four edges of the glass fiber mesh cloth are aligned with four edges of the low-density cement gypsum-based straw lining plate to prepare a composite plate I;
(2) spreading a layer of high-density cement gypsum-based straw outer panel mortar on the bottom surface of the mold I, then putting the composite board I, enabling four surfaces of the composite board I to be in contact with the four surfaces of the mold I, pouring a layer of high-density cement gypsum-based straw outer panel mortar on the composite board I, enabling the mortar to coat the front surface and the rear surface of the composite board I, standing for 15-20 hours, then demolding, curing for 7-10 days under natural environment conditions, forming high-density cement gypsum-based straw outer panels on the front side and the rear side of the composite board I and tightly combining the high-density cement gypsum-based straw outer panels with the composite board I to prepare a composite;
(3) and (2) spreading a layer of cement gypsum mixture on the bottom surface of the mould II, then adding a composite board II, enabling four surfaces of the composite board II to be just in contact with four surfaces of the mould II, pouring a layer of cement gypsum mixture on the composite board II, enabling the cement gypsum mixture to coat the front surface and the rear surface of the composite board II, standing for 10-15 hours, then demoulding, curing for 5-7 days under natural environment conditions, forming cement gypsum protective layers on the front side and the rear side of the composite board II and tightly combining the cement gypsum protective layers with the cement gypsum protective layers, and thus obtaining the cement gypsum-based straw lightweight wall insulation board.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113107135A (en) * | 2021-04-08 | 2021-07-13 | 李鹏宇 | Environment-friendly building board based on degradable composite material |
| CN113279502A (en) * | 2021-05-14 | 2021-08-20 | 福建绥成建设工程有限公司 | Suchengzhong irrigation wall |
| WO2023129617A1 (en) * | 2021-12-29 | 2023-07-06 | Certainteed Gypsum, Inc. | Plaster boards and methods for making them |
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| WO2023129617A1 (en) * | 2021-12-29 | 2023-07-06 | Certainteed Gypsum, Inc. | Plaster boards and methods for making them |
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