CN112094093A - Diatom ooze composite board and preparation method thereof - Google Patents
Diatom ooze composite board and preparation method thereof Download PDFInfo
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- CN112094093A CN112094093A CN201910522684.4A CN201910522684A CN112094093A CN 112094093 A CN112094093 A CN 112094093A CN 201910522684 A CN201910522684 A CN 201910522684A CN 112094093 A CN112094093 A CN 112094093A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00025—Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/82—Coloured materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a diatom ooze composite board and a preparation method thereof, wherein the diatom ooze composite board is prepared from the following raw materials in parts by weight: 1200 parts of 42.5-grade quick-hardening low-alkalinity sulphoaluminate cement, 50-150 parts of alkaline residues, 3-4 parts of glass fibers, 0.5-3 parts of defoaming agent, 2-3 parts of water reducing agent, 1-3 parts of retarder, 0.5-2 parts of water-retaining agent, 2-8 parts of rubber powder, 500 parts of water 300 and 150 parts of diatom ooze powder; the diatom ooze composite board provided by the invention can eliminate pollution, breathe and humidify, is environment-friendly, has high anion inducing efficiency, is beneficial to human health, and can absorb sound, reduce noise, sterilize, disinfect and remove peculiar smell. The fireproof flame-retardant coating has good fireproof and flame-retardant performances and has a self-cleaning function on the wall surface.
Description
Technical Field
The invention relates to a building material, in particular to a diatom ooze composite board and a preparation method thereof.
Background
Along with social development, people pay more and more attention to health, and green ecological building materials become the key direction of new material research. The green ecological building materials refer to those materials with good service performance and excellent environmental harmony. Good environmental harmony means that the resource and energy consumption is low, the environmental pollution is small, and the regeneration cycle utilization rate is high.
The negative oxygen ions are known as 'air vitamins' and are beneficial to the physical and mental health of human bodies. It mainly utilizes the nervous system and blood circulation of human body to produce influence on physiological activity of human body, and the negative oxygen ions can make capillary of human body expand so as to obtain the effect of promoting blood circulation and promoting regeneration of cell tissue, and can prevent cell oxidation, so-called preventing aging, promoting metabolism and raising immunity. In addition, the deodorant also has the effects of deodorizing, preventing bacterial growth, preventing mildew, storing heat and the like.
The existing building board only considers good physical and mechanical properties, waterproof and fireproof properties and processing properties, for example, CN201110453331.7 a cement-based wood fiber artificial board and a preparation method thereof, discloses a cement-based wood fiber artificial board, however, the product has the following disadvantages: 1. the production method needs compression molding, and has complex working procedures and higher equipment requirement; 2. the product obtained by the method has low heat preservation and heat insulation performance; 3. the board has no self-cleaning function and cannot absorb harmful substances such as formaldehyde and the like; 4. the board has no health-care function.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a diatom ooze composite board which is made of natural materials, does not contain any substance harmful to human bodies, can absorb and decompose harmful gas in air to achieve the effect of purifying air, is a novel wall material and a decorative finishing material with excellent comprehensive performance, and can be widely used as enclosure materials of temporary facilities such as ceiling panels, non-bearing internal partition panels, floor panels, roof panels, external wall panels, sentry boxes, kiosks and the like of various buildings.
In order to realize the purpose of the invention, the invention is realized by the following technical scheme:
the diatom ooze composite board is prepared from the following raw materials in parts by weight: 1200 parts of 42.5-grade quick-hardening low-alkalinity sulphoaluminate cement, 50-150 parts of alkaline residues, 3-4 parts of glass fibers, 0.5-3 parts of defoaming agent, 2-3 parts of water reducing agent, 1-3 parts of retarder, 0.5-2 parts of water-retaining agent, 2-8 parts of rubber powder, 500 parts of water 300 and 150 parts of diatomite powder.
Preferably, the diatom ooze composite board is prepared from the following raw materials in parts by weight: 1000 parts of 42.5-grade quick-hardening low-alkalinity sulphoaluminate cement, 100 parts of alkaline residues, 3.5 parts of glass fibers, 2 parts of defoaming agent, 2.5 parts of water reducing agent, 2 parts of retarder, 1 part of water-retaining agent, 5 parts of rubber powder, 400 parts of water and 120 parts of diatomite powder.
The diatom ooze powder is prepared from the following raw materials in parts by weight: 30-50 parts of diatomite, 5-10 parts of nano titanium dioxide powder, 5-10 parts of superfine calcium stearate and 5-10 parts of superfine talcum powder.
Preferably, the defoaming agent is one or more of tributyl phosphate, dimethyl silicone oil and corn oil.
Preferably, the water reducing agent is one or more of calcium lignosulphonate, a polycarboxylic acid water reducing agent and a methylene dimethyl dinaphthyl sodium sulfonate polymer.
Preferably, the retarder is one or more of zinc chloride, sodium borate and sodium lignosulfonate.
Preferably, the rubber powder is activated rubber powder processed by waste tires, and the fineness of the activated rubber powder is 40-80 meshes.
The preparation method of the diatom ooze composite board comprises the following steps:
(1) weighing the raw materials according to the weight parts, uniformly mixing 42.5-grade quick-hardening low-alkalinity sulphoaluminate cement, alkaline residue, glass fiber, a defoaming agent, a water reducing agent, a retarder, a water-retaining agent, rubber powder and water, adding the diatomite powder, and uniformly stirring;
(2) paving the mixture obtained in the step (1) on a template to be used as a primer layer;
(4) laying a reinforced fiber layer above the primer layer;
(5) sequentially paving the mixed material obtained in the step (1) on the reinforced fiber layer to be used as a medium material layer and a fabric layer;
(6) cutting by a wet plate, curing and forming;
(7) and placing the prepared plate under standard curing conditions for 12-24h, completely hardening and demolding, and then placing under standard curing conditions for curing for 7 days.
And (3) in the step (6), curing and forming are carried out for 6-8 hours by controlling the temperature of a curing kiln to be 25-35 ℃, the humidity to be more than or equal to 85 percent.
The standard curing conditions of the step (7) are as follows: the temperature is 20 +/-2 ℃, and the relative humidity is more than or equal to 90 percent.
The invention has the beneficial effects that:
(1) the diatom ooze composite board can remove formaldehyde and purify air;
the diatom ooze composite board contains diatom powder, so that harmful substances such as free formaldehyde, benzene, ammonia, radon, TVOC and the like can be effectively absorbed; can also remove the peculiar smell in the air, play the role of sterilization;
(2) the diatom ooze composite board can continuously release negative ions and has the functions of breathing and humidifying;
the diatom ooze releases 1869 negative oxygen ions per square centimeter per second, meanwhile, when the room is wet, the micropores of the diatom ooze suck water in the air for storage, and when the air is dry, the water is released. Therefore, people refer to the diatom ooze as a breathing wall, do not need a humidifier, a power supply or operation, and keep the indoor humidity between 40 and 70 ℃; (3) the diatom ooze composite board has the functions of sound absorption and noise reduction, self-cleaning wall surface, heat insulation and energy conservation, and long service life; countless micropores of the diatom ooze can absorb and block sound volume, the diatom ooze has the effect which is more than 2 times that of cement mortar and stone slab with the same thickness, and meanwhile, the reverberation is shortened by 50%; because the diatom ooze is a natural mineral substance, the diatom ooze does not contain heavy metal, does not generate static electricity, does not absorb dust, can be wiped off by using an eraser after being dirty, and has the function of self-cleaning of the wall surface; the diatom ooze composite board has low thermal conductivity and good heat insulation performance, is improved by more than 3 times compared with the existing composite board, and greatly saves electric energy and heating cost.
(4) The diatom ooze composite board disclosed by the invention is high-temperature resistant, good in fireproof and flame retardant performance; the diatom ooze composite board disclosed by the invention can resist high temperature of 1300 ℃, has no burning point only due to a melting point, can not burn when exposed to open fire, and does not generate any toxic smoke.
(5) The diatom ooze composite board is soft in color and can protect eyes; the diatom ooze composite board has strong light absorption rate, natural and soft reflected light, soft color and difficulty in causing eye fatigue and reducing myopia rate of children.
Detailed Description
The invention is further illustrated by the following specific examples.
Example 1
The diatom ooze composite board is prepared from the following raw materials in parts by weight: 1000 parts of 42.5-grade quick-hardening low-alkalinity sulphoaluminate cement, 100 parts of caustic sludge, 3.5 parts of glass fiber, 2 parts of tributyl phosphate, 2.5 parts of calcium lignosulfonate, 2 parts of zinc chloride, 1 part of water-retaining agent, 5 parts of rubber powder (with the fineness of 40 meshes), 400 parts of water and 120 parts of diatomite powder.
The diatom ooze powder consists of the following components: 40 parts of diatomite, 5 parts of nano titanium dioxide powder, 5 parts of superfine calcium stearate and 5 parts of superfine talcum powder.
The preparation method of the diatom ooze composite board comprises the following steps:
(1) weighing the raw materials according to the weight parts, uniformly mixing 42.5-grade quick-hardening low-alkalinity sulphoaluminate cement, alkaline residue, glass fiber, a defoaming agent, a water reducing agent, a retarder, a water-retaining agent, rubber powder and water, adding the diatomite powder, and uniformly stirring;
(2) paving the mixed material on a template to be used as a primer layer;
(3) laying a reinforced fiber layer above the primer layer;
(4) sequentially mixing and paving materials on the reinforced fiber layer to serve as a middle material layer and a fabric layer;
(5) cutting a wet plate, then putting the wet plate into a curing vehicle for curing and forming, controlling the temperature of the curing kiln to be 25-35 ℃, controlling the humidity to be more than or equal to 85%, and curing for 7 hours to prepare the plate.
(6) Placing the prepared plate under standard curing conditions for 12h, demoulding after the plate is completely hardened, and then placing the plate under the standard curing conditions for curing for 7 days; the standard curing conditions are as follows: the temperature is 20 +/-2 ℃, and the relative humidity is more than or equal to 90 percent.
Example 2
The diatom ooze composite board is prepared from the following raw materials in parts by weight: 800 parts of 42.5-grade rapid-hardening low-alkalinity sulphoaluminate cement, 50 parts of alkaline residue, 3 parts of glass fiber, 0.5 part of dimethyl silicone oil, 2 parts of polycarboxylic acid water reducing agent, 1 part of sodium borate retarder, 0.5 part of sodium polyacrylate water-retaining agent, 2 parts of rubber powder (with the fineness of 80 meshes), 300 parts of water and 100 parts of diatomite powder.
The diatom ooze powder consists of the following components: 30 parts of diatomite, 10 parts of nano titanium dioxide powder, 10 parts of superfine calcium stearate and 10 parts of superfine talcum powder.
The preparation method of the diatom ooze composite board comprises the following steps:
(1) weighing the raw materials according to the weight parts, uniformly mixing 42.5-grade quick-hardening low-alkalinity sulphoaluminate cement, alkaline residue, glass fiber, a defoaming agent, a water reducing agent, a retarder, a water-retaining agent, rubber powder and water, adding the diatomite powder, and uniformly stirring;
(2) paving the mixed material on a template to be used as a primer layer;
(3) laying a reinforced fiber layer above the primer layer;
(4) laying mixed materials as a middle material layer and a fabric layer on the reinforced fiber layer in sequence;
(5) cutting a wet plate, then putting the cut wet plate into a curing vehicle for curing and forming, controlling the temperature of a curing kiln to be 25-35 ℃, controlling the humidity to be more than or equal to 85%, and curing for 6 hours to prepare a plate;
(6) placing the prepared plate under standard curing conditions for 12h, demoulding after the plate is completely hardened, and then placing the plate under the standard curing conditions for curing for 7 days; the standard curing conditions are as follows: the temperature is 20 +/-2 ℃, and the relative humidity is more than or equal to 90 percent.
Example 3
The diatom ooze composite board is prepared from the following raw materials in parts by weight: 1200 parts of 42.5-grade rapid-hardening low-alkalinity sulphoaluminate cement, 150 parts of alkaline residues, 4 parts of glass fibers, 3 parts of defoaming agent, 3 parts of water reducing agent, 3 parts of retarder, 2 parts of sodium polyacrylate water-retaining agent, 8 parts of rubber powder (with the fineness of 60 meshes), 500 parts of water and 150 parts of diatomite powder;
the defoaming agent is a mixture of corn oil and dimethyl silicone oil; the water reducing agent is a mixture of methylene dimethyl dinaphthyl sodium sulfonate polymer and calcium lignosulfonate; the retarder is a mixture of sodium lignosulfonate and sodium borate.
The diatom ooze powder consists of the following components: 50 parts of diatomite, 10 parts of nano titanium dioxide powder, 10 parts of superfine calcium stearate and 10 parts of superfine talcum powder.
The preparation method of the diatom ooze composite board comprises the following steps:
(1) weighing the raw materials according to the weight parts, uniformly mixing 42.5-grade quick-hardening low-alkalinity sulphoaluminate cement, alkaline residue, glass fiber, a defoaming agent, a water reducing agent, a retarder, a water-retaining agent, rubber powder and water, adding the diatomite powder, and uniformly stirring;
(2) paving the mixed material on a template to be used as a primer layer;
(3) laying a reinforced fiber layer above the primer layer;
(4) laying mixed materials as a middle material layer and a fabric layer on the reinforced fiber layer in sequence;
(5) cutting the wet plate, curing and forming, controlling the temperature of a curing kiln to be 30 ℃, controlling the humidity to be more than or equal to 85%, and curing for 8 hours to prepare a plate;
(6) placing the prepared plate under standard curing conditions for 24h, demoulding after the plate is completely hardened, and then placing the plate under the standard curing conditions for curing for 7 days; the standard curing conditions are as follows: the temperature is 20 +/-2 ℃, and the relative humidity is more than or equal to 90 percent.
The laboratory tests carried out on the above examples were as follows:
table 1 shows the performance measurements of the diatom ooze composite plate of the invention:
table 2 shows the environmental protection performance test:
table 3 shows the formaldehyde purification performance of the examples with reference to the industry standard test methods:
from the above embodiments, it can be seen that the diatom ooze composite board of the invention correspondingly releases a large amount of negative ions, especially in embodiment 1, and at the same time, the adsorption effect on harmful gases is very obvious, which indicates that the components and contents of the diatom ooze composite board of the invention have very critical significance for realizing release of a large amount of negative ions and effective adsorption of harmful gases by diatom ooze.
According to the invention, through reasonable configuration of the diatomite, the nano titanium dioxide, the superfine calcium stearate and the superfine talcum powder, the induction effect of negative ions is improved, and the diatom ooze composite board prepared by mixing the diatomite can eliminate pollution, breathe and humidify, is environment-friendly, has high efficiency of inducing negative ions, is beneficial to human health, and can absorb sound, reduce noise, sterilize, disinfect and remove peculiar smell. Meanwhile, the setting of each parameter of the preparation method is beneficial to improving the physical properties of impact resistance and tensile strength of the plate, and the plate has good fireproof and flame retardant properties and a self-cleaning function of the wall surface.
Claims (9)
1. The diatom ooze composite board is characterized by being prepared from the following raw materials in parts by weight: 1200 parts of 42.5-grade quick-hardening low-alkalinity sulphoaluminate cement, 50-150 parts of alkaline residues, 3-4 parts of glass fibers, 0.5-3 parts of defoaming agent, 2-3 parts of water reducing agent, 1-3 parts of retarder, 0.5-2 parts of water-retaining agent, 2-8 parts of rubber powder, 500 parts of water 300 and 150 parts of diatom ooze powder; the diatom ooze powder is prepared from the following raw materials in parts by weight: 30-50 parts of diatomite, 5-10 parts of nano titanium dioxide powder, 5-10 parts of superfine calcium stearate and 5-10 parts of superfine talcum powder.
2. The diatom ooze composite board of claim 1, wherein the diatom ooze composite board is made from the following raw materials in parts by weight: 1000 parts of 42.5-grade quick-hardening low-alkalinity sulphoaluminate cement, 100 parts of alkaline residues, 3.5 parts of glass fibers, 2 parts of defoaming agent, 2.5 parts of water reducing agent, 2 parts of retarder, 1 part of water-retaining agent, 5 parts of rubber powder, 400 parts of water and 120 parts of diatomite powder.
3. The diatom ooze composite board of claim 1, wherein the defoaming agent is one or more of tributyl phosphate, dimethicone and corn oil.
4. The diatom ooze composite board according to claim 1, wherein the water reducing agent is one or more of calcium lignosulfonate, polycarboxylic acid water reducing agent and methylene dimethyl dinaphthyl sodium sulfonate polymer.
5. The diatom ooze composite board according to claim 1, wherein the retarder is one or more of zinc chloride, sodium borate and sodium lignosulfonate.
6. The diatom ooze composite board according to claim 1, wherein the rubber powder is activated rubber powder processed from waste tires, and the fineness of the activated rubber powder is 40-80 meshes.
7. A method of making a diatom ooze composite board according to any of claims 1-6, comprising the steps of:
(1) weighing the raw materials according to the weight parts, uniformly mixing 42.5-grade quick-hardening low-alkalinity sulphoaluminate cement, alkaline residue, glass fiber, a defoaming agent, a water reducing agent, a retarder, a water-retaining agent, rubber powder and water, adding the diatomite powder, and uniformly stirring;
(2) paving the mixture obtained in the step (1) on a template to be used as a primer layer;
(4) laying a reinforced fiber layer above the primer layer;
(5) sequentially paving the mixed material obtained in the step (1) on the reinforced fiber layer to be used as a medium material layer and a fabric layer;
(6) cutting by a wet plate, curing and forming;
(7) and placing the prepared plate under standard curing conditions for 12-24h, completely hardening and demolding, and then placing under standard curing conditions for curing for 7 days.
8. The preparation method of the diatom ooze composite board according to claim 7, wherein in the step (6), the curing and forming are carried out for 6-8 hours under the condition that the temperature of the curing kiln is controlled to be 25-35 ℃, the humidity is not less than 85%.
9. The method for preparing the diatom ooze composite board according to claim 7, wherein the standard curing conditions of step (7) are: the temperature is 20 +/-2 ℃, and the relative humidity is more than or equal to 90 percent.
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| CN201910522684.4A CN112094093A (en) | 2019-06-17 | 2019-06-17 | Diatom ooze composite board and preparation method thereof |
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| US20100071597A1 (en) * | 2008-09-25 | 2010-03-25 | United States Gypsum Company | Fly ash based lightweight cementitious composition with high compressive strength and fast set |
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| CN107352937A (en) * | 2017-08-16 | 2017-11-17 | 河北卓达建材研究院有限公司 | A kind of diatom artwork for inducing anion |
| CN107352855A (en) * | 2017-08-16 | 2017-11-17 | 河北卓达建材研究院有限公司 | A kind of diatom ooze wall material and its construction method for inducing anion |
| CN107382226A (en) * | 2017-08-15 | 2017-11-24 | 河北卓达建材研究院有限公司 | A kind of multilayer Indoor decorative plate and preparation method thereof |
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2019
- 2019-06-17 CN CN201910522684.4A patent/CN112094093A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100071597A1 (en) * | 2008-09-25 | 2010-03-25 | United States Gypsum Company | Fly ash based lightweight cementitious composition with high compressive strength and fast set |
| CN106380152A (en) * | 2016-08-30 | 2017-02-08 | 卓达新材料科技集团威海股份有限公司 | Aerogel composite sawdust plate and preparation method thereof |
| CN107382226A (en) * | 2017-08-15 | 2017-11-24 | 河北卓达建材研究院有限公司 | A kind of multilayer Indoor decorative plate and preparation method thereof |
| CN107352937A (en) * | 2017-08-16 | 2017-11-17 | 河北卓达建材研究院有限公司 | A kind of diatom artwork for inducing anion |
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