CN115286343A - Regenerated fiber gypsum board with negative oxygen ion slow release function and preparation method thereof - Google Patents
Regenerated fiber gypsum board with negative oxygen ion slow release function and preparation method thereof Download PDFInfo
- Publication number
- CN115286343A CN115286343A CN202210978246.0A CN202210978246A CN115286343A CN 115286343 A CN115286343 A CN 115286343A CN 202210978246 A CN202210978246 A CN 202210978246A CN 115286343 A CN115286343 A CN 115286343A
- Authority
- CN
- China
- Prior art keywords
- gypsum board
- mass
- negative oxygen
- gypsum
- regenerated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- 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
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- 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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical field of building materials, and provides a regenerated fiber gypsum board with a function of slowly releasing negative oxygen ions and a preparation method thereof. The gypsum board provided by the invention is prepared from the raw materials of dry materials, water, a water reducing agent and a retarder; the dry material comprises the following components: gypsum, white cement, anatase type TiO 2 White tourmaline powder and regenerated glass fiber. The invention adopts the regenerated glass fiber to toughen the common building gypsum board, and adds a proper amount of white cement to improve the strength and water resistance of the gypsum board and increase the moisture resistance and crack resistance of the gypsum board. Meanwhile, the invention adds anatase type TiO 2 Under the action of ultraviolet light, the gypsum board can act together with white tourmaline powder to release negative oxygen ions, improve the indoor microenvironment, improve the habitability and comfort, and further increase the functions of the gypsum board.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a regenerated fiber gypsum board with a function of slowly releasing negative oxygen ions and a preparation method thereof.
Background
The gypsum board has the excellent performances of light weight, high strength, thin thickness, convenient processing, sound and heat insulation, fire prevention and the like, and is widely applied to inner partition walls, wall covering panels, ceilings, acoustic panels, ground base plates, various decorative plates and the like of various buildings such as houses, office buildings, shops, hotels, industrial plants and the like. In recent years, the gypsum board industry is rapidly developed, and statistical data show that the space of the gypsum board market in China is about 34 hundred million square meters in 2020, the gypsum board market is estimated to be improved to 41 hundred million square meters in 2025, and the annual composite average growth rate is about 3.5%.
With the development of the gypsum board industry, the problems of common building gypsum boards are increasingly highlighted, such as: the gypsum board has poor moisture resistance and crack resistance, is easy to deform or crack after being used for a long time, is used as a facing material, and has single function and low additional value.
Disclosure of Invention
In view of the above, the invention provides a regenerated fiber gypsum board with a function of slowly releasing negative oxygen ions and a preparation method thereof. The gypsum board provided by the invention has good moisture resistance and crack resistance, and has a function of slowly releasing negative oxygen ions.
In order to achieve the above object, the present invention provides the following technical solutions:
a regenerated fiber gypsum board with a function of slowly releasing negative oxygen ions is prepared from raw materials including dry materials, water, a water reducing agent and a retarder;
the mass of the water is 45-55% of the mass of the dry material, the mass of the water reducing agent is 0.5-1.5% of the mass of the dry material, and the mass of the retarder is 0.1-0.5% of the mass of the dry material;
the dry material comprises the following components in parts by mass:
preferably, the regenerated glass fiber comprises waste wind power blade regenerated fiber, the diameter of the waste wind power blade regenerated fiber is 15-30 μm, and the length of the waste wind power blade regenerated fiber is 1.18-2.36 mm.
Preferably, the anatase type TiO 2 The particle diameter of (A) is 20nm to 100nm.
Preferably, the mesh number of the white tourmaline powder is more than or equal to 1250 meshes.
Preferably, the gypsum comprises building gypsum, the fineness of the gypsum meets the requirement of sieving by a 120-140-mesh sieve, and the allowance of the sieve is less than 3%.
The invention also provides a preparation method of the regenerated fiber gypsum board with the function of slowly releasing negative oxygen ions, which comprises the following steps:
mixing the dry material, water, a water reducing agent and a retarder to obtain mixed slurry;
and pouring, vibrating, forming and maintaining the mixed slurry at normal temperature in sequence to obtain the gypsum board.
Preferably, the mixing comprises the steps of: mixing Gypsum Fibrosum and anatase type TiO 2 Mixing white cement, regenerated glass fiber and white tourmaline powder for the first time to obtain dry materials; and secondly, mixing the dry material, water, a water reducing agent and a retarder to obtain mixed slurry.
Preferably, the first mixing mode is stirring, the rotating speed of the stirring is 350-400 r/min, and the time is 25-35 s.
Preferably, the second mixing mode is stirring, the rotating speed of the stirring is 350-400 r/min, and the time is 50-70 s.
Preferably, the normal-temperature maintenance comprises normal-temperature maintenance of the belt mold and normal-temperature maintenance after mold removal, wherein the normal-temperature maintenance of the belt mold is carried out at the temperature of 18-22 ℃, the relative humidity is 70-80%, and the time is 24-36 h; the temperature of normal temperature curing after the mold stripping is 18-22 ℃, the relative humidity is 70-80%, and the time is 7-14 days.
The invention provides a regenerated fiber gypsum board with a function of slowly releasing negative oxygen ions, which is prepared from the following raw materials of dry materials, water, a water reducing agent and a retarder; the mass of the water is 45-55% of the mass of the dry material, the mass of the water reducing agent is 0.5-1.5% of the mass of the dry material, and the mass of the retarder is 0% of the mass of the dry material1 to 0.5 percent; the dry material comprises the following components in parts by mass: 350-450 parts of gypsum; 30-50 parts of white cement; anatase type TiO 2 10-20 parts; 10-20 parts of white tourmaline powder; 5-15 parts of regenerated glass fiber. The invention adopts the regenerated glass fiber to toughen the common building gypsum board, and adds a proper amount of white cement to improve the strength and water resistance of the gypsum board and increase the moisture resistance and crack resistance of the gypsum board. Meanwhile, the invention adds anatase type TiO 2 Under the action of ultraviolet light, the gypsum board can act together with white tourmaline powder to release negative oxygen ions, improve the indoor microenvironment, improve the habitability and comfort, and further increase the functions of the gypsum board.
Furthermore, the waste wind power blade regenerated fibers are used as the regenerated glass fibers, so that the problems of serious environmental pollution, resource waste and the like caused by difficulty in degradation of the thermosetting waste wind power blades are solved, and the additional value of the gypsum board is improved. The diameter and the length of the regenerated fiber of the waste wind power blade are adjusted, so that the toughening effect of the regenerated fiber is ensured, the regenerated fiber can have good dispersibility in raw materials, and the toughening effect of the gypsum board is further improved.
The invention also provides a preparation method of the gypsum board in the scheme. The preparation method provided by the invention has simple steps and easy operation, and is suitable for industrial production.
Detailed Description
The invention provides a regenerated fiber gypsum board with a function of slowly releasing negative oxygen ions, which is prepared from the following raw materials of dry materials, water, a water reducing agent and a retarder; the mass of the water is 45-55% of the mass of the dry material, the mass of the water reducing agent is 0.5-1.5% of the mass of the dry material, and the mass of the retarder is 0.1-0.5% of the mass of the dry material; the dry material comprises the following components in parts by mass: 350-450 parts of gypsum; 30-50 parts of white cement; anatase type TiO 2 10-20 parts; 10-20 parts of white tourmaline powder; 5-15 parts of regenerated glass fiber.
Unless otherwise specified, the starting materials for the preparation used in the present invention are commercially available.
The preparation raw material of the gypsum board comprises a dry material, wherein the dry material comprises 350-450 parts of gypsum, preferably 370-430 parts of gypsum, more preferably 390-410 parts of gypsum, and even more preferably 400 parts of gypsum. In the present invention, the gypsum preferably comprises building gypsum; the fineness of the gypsum preferably meets the requirement of sieving by a 120-140-mesh sieve, the surplus sieve is less than 3 percent, and more preferably meets the requirement of sieving by a 120-mesh sieve, and the surplus sieve is less than 3 percent.
The dry material includes white cement 30 to 50 parts by mass, preferably 32 to 48 parts by mass, more preferably 35 to 45 parts by mass, and still more preferably 40 parts by mass based on the mass of the gypsum. In the present invention, the white cement preferably comprises ordinary portland cement, and the white cement preferably has a designation of not less than 42.5, more preferably 42.5 or 52.5. In a particular embodiment of the invention, the white cement is preferably P.O 52.5, the specific surface area of the white cement being equal to or more than 300m 2 The initial setting time is more than or equal to 45min, and the final setting time is less than or equal to 300min. The strength and the water resistance of the gypsum board can be improved by adding the white cement with the content and the strength grade.
Based on the mass of the gypsum, the dry material comprises anatase TiO 2 10 to 20 parts, preferably 12 to 18 parts, more preferably 14 to 16 parts, and still more preferably 15 parts. In the present invention, the anatase type TiO 2 The particle diameter of (A) is preferably 20 to 100nm, more preferably 23 to 80nm, still more preferably 25 to 50nm, most preferably 25nm.
The dry material comprises 10 to 20 parts, preferably 12 to 18 parts, more preferably 14 to 16 parts, and even more preferably 15 parts of white tourmaline powder by mass of the gypsum. In the present invention, the mesh number of the white tourmaline powder is preferably not less than 1250 mesh. In the invention, the tourmaline powder has the characteristic of 'spontaneous polarization' and can generate negative ions in the air. And, tourmaline powder and anatase type TiO 2 When the tourmaline is used compositely, the high electric field on the surface of the tourmaline can capture free electrons on the surface of the tourmaline. Thus, when TiO 2 After being excited by light, the tourmaline forms photo-generated electron and hole pairs, the surface of the tourmaline can rapidly capture photoelectrons before the photoelectrons and the hole pairs are compounded, and the photoelectrons and the hole pairs are inhibitedThereby improving the photocatalytic degradation performance of pollutants due to TiO 2 The capability of degrading organic matters on the surface is improved, the antifouling capability of the surface of the material is enhanced, and pollutants can be effectively prevented from covering the tourmaline, so that the tourmaline can better exert the function of releasing negative oxygen ions.
The dry material comprises 5 to 15 parts, preferably 7 to 13 parts, more preferably 9 to 11 parts, and even more preferably 10 parts of regenerated glass fiber based on the mass of the gypsum. In the invention, the regenerated glass fiber comprises waste wind power blade regenerated fiber, the diameter of the waste wind power blade regenerated fiber is preferably 15-30 μm, more preferably 17-26 μm, further preferably 18-24 μm, and most preferably 20 μm, and the length of the waste wind power blade regenerated fiber is preferably 1.18-2.36 mm, more preferably 1.4-2.1 mm, further preferably 1.6-2.0 mm, and most preferably 1.8mm. The waste wind power blade regenerated fibers with the diameters and the lengths within the range are preferably selected, so that the waste wind power blade regenerated fibers have better dispersibility when raw materials are mixed, and the toughening effect of the regenerated fibers is improved. Meanwhile, the waste wind power blade regenerated fibers are adopted, so that the problems of serious environmental pollution, resource waste and the like caused by difficult degradation of the thermosetting waste wind power blade can be effectively solved.
In the invention, the preparation method of the waste wind power blade regenerated fiber preferably comprises the following steps: cutting the waste wind power blade to obtain a pre-cut material; shredding the pre-cut material to obtain pre-crushed material; crushing the pre-crushed material to obtain a crushed material; and sorting the crushed materials to obtain the waste wind power blade regenerated fibers. According to the invention, the waste wind power blade is cut to obtain the pre-cut material. In the present invention, the width of the preliminary cut is preferably 30 to 50cm, and the length of the preliminary cut is preferably 100 to 200cm. The cutting process is not particularly limited, and the waste wind power blade can be cut into the size by adopting the cutting process well known in the art.
After the pre-cut material is obtained, the pre-cut material is shredded to obtain pre-crushed material. In the present invention, the apparatus used for shredding is preferably a shredder, and the power for shredding is preferably 90 to 110kW, more preferably 100kW. In the present invention, the size of the pre-crushed material is preferably 5 to 10cm.
After the pre-crushed material is obtained, the pre-crushed material is crushed to obtain a crushed material. In the present invention, the facility for pulverization is preferably a pulverizer, and the power for pulverization is preferably 40 to 60kW, more preferably 50kW. The invention preferably mechanically crushes, grinds and breaks up the pre-crushed material in a crusher to form irregular crushed material. The size of the crushed material is not particularly limited, and the crushed material can be selected according to the actual required size of the regenerated fiber.
After the crushed material is obtained, the crushed material is sorted to obtain the waste wind power blade regenerated fiber. In the invention, the equipment used for sorting is preferably a fan, and the power of the fan is preferably 5-10 kW, and more preferably 8kW. The method separates the waste wind power blade fiber from the waste wind power blade powder through sorting. According to the invention, preferably, the waste wind power blade fiber and the waste wind power blade powder are separately placed in the storage bin for storage and standby.
In the specific embodiment of the invention, preferably, the waste wind power blade is cut to obtain the pre-cut material with the width of 40cm and the length of 150 cm; putting the pre-cut material into a shredder, and shredding under the power of 100kW to obtain a pre-cut material with the size of 8 cm; putting the pre-cut materials into a grinder, and grinding under the power of 50kW to obtain broken materials; and (3) sorting the crushed material by a fan with the power of 8kW to obtain the waste wind power blade regenerated fiber with the length of 1.18-2.36 mm, and conveying the waste wind power blade regenerated fiber to a special storage bin for later use.
In the present invention, the mass of the water is 45 to 55%, preferably 47 to 52%, more preferably 49 to 51%, and still more preferably 50% of the mass of the dry material. The invention preferably selects the water dosage to improve the strength of the gypsum board on the premise of ensuring certain porosity, and simultaneously can ensure good fluidity of the gypsum slurry and facilitate molding.
In the present invention, the mass of the water reducing agent is 0.5 to 1.5%, preferably 0.7 to 1.3%, more preferably 0.9 to 1.1%, and still more preferably 1.0% of the mass of the dry material. In the invention, the water reducing agent preferably comprises a polycarboxylic acid high-efficiency water reducing agent, and the water reducing rate of the polycarboxylic acid high-efficiency water reducing agent is preferably more than or equal to 30%.
In the present invention, the mass of the retarder is 0.1 to 0.5%, preferably 0.15 to 0.45%, more preferably 0.2 to 0.4%, and still more preferably 0.3% of the mass of the dry material. In the present invention, the retarder preferably includes citric acid, tartaric acid, alkaline phosphate, or protein-based retarder, more preferably citric acid or tartaric acid, and further preferably tartaric acid. In the specific embodiment of the invention, the solid content of the tartaric acid is more than or equal to 98 percent, and the total alkali content<5％，Cl - Content (c) of<0.1 percent and the water solubility at 20 ℃ is more than or equal to 1350g/L. According to the invention, tartaric acid is preferably used as a retarder, so that the coagulation of gypsum slurry can be effectively delayed, the retarding effect is good, and the strength of the hardened gypsum board is not adversely affected.
The invention provides a preparation method of the gypsum board in the scheme, which comprises the following steps: mixing the dry material, water, a water reducing agent and a retarder to obtain mixed slurry; and pouring, vibrating, forming and maintaining the mixed slurry at normal temperature in sequence to obtain the gypsum board.
In the present invention, the mixing preferably comprises the steps of: mixing Gypsum Fibrosum and anatase type TiO 2 Mixing white cement, regenerated glass fiber and white tourmaline powder for the first time to obtain dry materials; and secondly, mixing the dry material, water, a water reducing agent and a retarder to obtain mixed slurry. In the present invention, the first mixing mode is preferably stirring, the device used for stirring is preferably a stirrer, and the rotation speed of the stirring is preferably 350 to 400r/min, more preferably 370 to 390r/min, and still more preferably 380r/min. The stirring time is preferably 25 to 35 seconds, more preferably 28 to 32 seconds, and further preferably 30 seconds. In the present invention, the second mixing modePreferably, the stirring is performed by a stirrer, the rotation speed of the stirring is preferably 350 to 400r/min, more preferably 370 to 390r/min, and even more preferably 380r/min, and the stirring time is preferably 50 to 70s, more preferably 55 to 65s, and even more preferably 60s.
In the present invention, the casting method is preferably casting with a mold. In the present invention, the casting temperature is preferably 18 to 22 ℃, more preferably 20 ℃. The mold is not particularly limited in the present invention, and may be selected according to actual needs of those skilled in the art. The vibrating and forming method is not particularly limited in the present invention, and may be a method known to those skilled in the art.
In the present invention, the room temperature curing preferably includes room temperature curing with a mold and room temperature curing after mold removal, which are sequentially performed. In the invention, the temperature for normal-temperature curing of the belt mold is preferably 18-22 ℃, and more preferably 20 ℃; the relative humidity of the belt mold during normal-temperature curing is preferably 70 to 80%, more preferably 75%, and the time for the belt mold during normal-temperature curing is preferably 24 to 36 hours, more preferably 24 hours. The mode of stripping is not particularly limited in the present invention, and a mode known to those skilled in the art can be adopted. In the invention, the temperature of normal temperature curing after the form removal is preferably 18-22 ℃, and more preferably 20 ℃; the relative humidity of the normal-temperature curing after the mold removal is preferably 70 to 80%, more preferably 75%, and the time of the normal-temperature curing after the mold removal is preferably 7 to 14 days, more preferably 7 days.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention.
Example 1
Weighing 400 parts of building gypsum (the fineness is less than 3 percent after sieving through a 120-mesh sieve) and 15 parts of anatase TiO 2 (the grain diameter is 25 nm), 15 parts of white tourmaline powder (the mesh number is 1250 meshes), 40 parts of white cement (P.O 52.5) and 10 parts of waste wind power blade fibers (the diameter is 20 mu m, and the length is 1.8 mm), and the mixture is put into a stirrer to be stirred for 30s at the rotating speed of 380r/min to obtain dry materials; mixing the obtained dry material with water 50% of the dry material mass and polycarboxylic acid water reducing agent 1% of the dry material massThe water rate is more than or equal to 30 percent), tartaric acid accounting for 0.3 percent of the mass of the dry materials is added into a stirrer and stirred for 1min at 380r/min to obtain slurry; pouring the mixture into a mold, wherein the size of the pouring mold is 1200mm x 2400mm x 8mm, the pouring temperature is 20 ℃, vibrating, forming, maintaining the belt mold at the normal temperature for 24 hours, demolding after maintaining the belt mold at the normal temperature, and maintaining the belt mold at the normal temperature for 7d after demolding, wherein the temperature of maintaining the belt mold at the normal temperature and the temperature of maintaining the belt mold at the normal temperature after demolding are 20 ℃, and the relative humidity is 75%, so that the gypsum board is obtained. And (3) drying the obtained gypsum board in an oven at the temperature of 40 +/-2 ℃ for 24 hours, and measuring the performance parameters of dry density, water content, mass per unit area, breaking load, damp deflection and negative oxygen ion number. The measurement was carried out according to the method described in JC/T799-2016, decorative plasterboard.
Example 2
Subjecting anatase type TiO to 2 The amount of the waste wind power blade fiber is adjusted to 10 parts, the amount of the white tourmaline powder is adjusted to 10 parts, the amount of the white cement (P.O 52.5) is adjusted to 30 parts, and the amount of the waste wind power blade fiber is adjusted to 5 parts. The amount of water is adjusted to be 40% of the dry material, the amount of the polycarboxylate superplasticizer is adjusted to be 0.5% of the dry material, and the amount of the tartaric acid is adjusted to be 0.1% of the dry material. Other conditions were the same as in example 1. The gypsum board prepared by the method of example 1 was measured for dry density, moisture content, mass per unit area, breaking load, deflection under moisture, and number of negative oxygen ions.
Comparative example 1
A commercially available recycled fibre plasterboard GRG (performance parameters meeting JC/T799-2016 "decorative plasterboard") was used as a comparative example. The performance parameters of dry density, water content, mass per unit area, breaking load, deflection under damp and number of negative oxygen ions of the gypsum board GRG were measured by the measurement method of example 1. The results of the performance tests on the gypsum boards prepared in examples 1 and 2 and the commercially available gypsum board of comparative example 1 are shown in Table 1.
Table 1 results of performance tests on gypsum boards prepared in examples 1 to 2 and a commercially available gypsum board of comparative example 1
As can be seen from Table 1, the dry density of the slow-release negative oxygen ion gypsum board prepared by utilizing the waste wind power blades is 930-980 kg/m 3 The water content is 2.31-2.46%, and the mass per unit area is 10.2-11.1 kg/m 2 The breaking load is 136-155N, the damp deflection is 5.1-5.8 mm, and the number of slow-release negative oxygen ions is 532-640/cm 3 And meets the requirements of JC/T799-2016 decorative gypsum board. Compared with the common fiber gypsum board, the fiber gypsum board prepared by the invention has relatively small dry density and lighter weight, has smaller difference on basic parameters such as water content, unit area mass and the like, obviously improves the aspects of breaking load, damping deflection and the like, and has better crack resistance and moisture resistance. Meanwhile, in the aspect of slowly releasing negative oxygen ions, the number of negative oxygen ions released by the fiber gypsum board prepared by the invention can reach 640 negative oxygen ions/cm 3 And the air-conditioning system can reach the level III standard in LY/T2586-2016 technical specification for observing the concentration of negative (oxygen) ions in air, and can effectively improve the indoor microenvironment and the habitability.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (10)
1. A regenerated fiber gypsum board with a function of slowly releasing negative oxygen ions is characterized in that raw materials for preparation comprise dry materials, water, a water reducing agent and a slow-setting agent;
the mass of the water is 45-55% of the mass of the dry material, the mass of the water reducing agent is 0.5-1.5% of the mass of the dry material, and the mass of the retarder is 0.1-0.5% of the mass of the dry material;
the dry material comprises the following components in parts by mass:
2. the slow-release negative oxygen ion functional regenerated fiber gypsum board according to claim 1, wherein the regenerated glass fiber comprises waste wind power blade regenerated fiber, the diameter of the waste wind power blade regenerated fiber is 15-30 μm, and the length of the waste wind power blade regenerated fiber is 1.18-2.36 mm.
3. The slow-release negative oxygen ion functional regenerated fiber gypsum board of claim 1, wherein the anatase type TiO is 2 The particle diameter of (A) is 20nm to 100nm.
4. The regenerated fiber gypsum board with the function of slowly releasing negative oxygen ions as claimed in claim 1, wherein the mesh number of the white tourmaline powder is not less than 1250 meshes.
5. The regenerative fiber gypsum board with the function of slowly releasing negative oxygen ions as claimed in claim 1, wherein the gypsum comprises building gypsum, the fineness of the gypsum meets the requirement of sieving with a 120-140 mesh sieve, and the sieve residue is less than 3%.
6. The method for preparing the regenerated fiber gypsum board with the function of slowly releasing negative oxygen ions as claimed in any one of claims 1 to 5, is characterized by comprising the following steps:
mixing the dry material, water, a water reducing agent and a retarder to obtain mixed slurry;
and pouring, vibrating, forming and maintaining the mixed slurry at normal temperature in sequence to obtain the gypsum board.
7. The method of claim 6, wherein the mixing comprises the steps of:
mixing Gypsum Fibrosum and anatase type TiO 2 The white cement, the regenerated glass fiber and the white tourmaline powder are subjected to first mixing to obtain a dry material;
and secondly, mixing the dry material, water, a water reducing agent and a retarder to obtain mixed slurry.
8. The method according to claim 7, wherein the first mixing is performed by stirring at a rotation speed of 350 to 400r/min for 25 to 35 seconds.
9. The method according to claim 7, wherein the second mixing is performed by stirring at a rotation speed of 350 to 400r/min for 50 to 70 seconds.
10. The preparation method of claim 6, wherein the normal temperature curing comprises normal temperature curing with a mold and normal temperature curing after mold stripping which are sequentially carried out, wherein the temperature of the normal temperature curing with the mold is 18-22 ℃, the relative humidity is 70-80%, and the time is 24-36 h; the temperature of normal temperature curing after the mold stripping is 18-22 ℃, the relative humidity is 70-80%, and the time is 7-14 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210978246.0A CN115286343A (en) | 2022-08-16 | 2022-08-16 | Regenerated fiber gypsum board with negative oxygen ion slow release function and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210978246.0A CN115286343A (en) | 2022-08-16 | 2022-08-16 | Regenerated fiber gypsum board with negative oxygen ion slow release function and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115286343A true CN115286343A (en) | 2022-11-04 |
Family
ID=83829734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210978246.0A Pending CN115286343A (en) | 2022-08-16 | 2022-08-16 | Regenerated fiber gypsum board with negative oxygen ion slow release function and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115286343A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106317999A (en) * | 2016-08-12 | 2017-01-11 | 山东汉诺宝嘉节能科技股份有限公司 | Desulfurized gypsum putty releasing negative oxygen ions |
| CN107129255A (en) * | 2017-07-04 | 2017-09-05 | 合肥慧林建材有限公司 | A kind of high-strength environment-friendly fibrous plaster and preparation method thereof |
| CN107382246A (en) * | 2017-07-31 | 2017-11-24 | 湖北萨利赫新材料有限公司 | With brushing gypsum for eliminating formaldehyde, releasing negative oxygen ion and preparation method thereof |
| CN109250998A (en) * | 2018-09-21 | 2019-01-22 | 上海朗绿建筑科技股份有限公司 | A kind of environment-friendly type plasterboard and preparation method thereof |
| CN110845209A (en) * | 2019-11-15 | 2020-02-28 | 贵州福泉蓝图住宅产业化有限公司 | Waterproof type assembled gypsum wallboard capable of releasing negative oxygen ions, preparation method and building |
-
2022
- 2022-08-16 CN CN202210978246.0A patent/CN115286343A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106317999A (en) * | 2016-08-12 | 2017-01-11 | 山东汉诺宝嘉节能科技股份有限公司 | Desulfurized gypsum putty releasing negative oxygen ions |
| CN107129255A (en) * | 2017-07-04 | 2017-09-05 | 合肥慧林建材有限公司 | A kind of high-strength environment-friendly fibrous plaster and preparation method thereof |
| CN107382246A (en) * | 2017-07-31 | 2017-11-24 | 湖北萨利赫新材料有限公司 | With brushing gypsum for eliminating formaldehyde, releasing negative oxygen ion and preparation method thereof |
| CN109250998A (en) * | 2018-09-21 | 2019-01-22 | 上海朗绿建筑科技股份有限公司 | A kind of environment-friendly type plasterboard and preparation method thereof |
| CN110845209A (en) * | 2019-11-15 | 2020-02-28 | 贵州福泉蓝图住宅产业化有限公司 | Waterproof type assembled gypsum wallboard capable of releasing negative oxygen ions, preparation method and building |
Non-Patent Citations (1)
| Title |
|---|
| 杨立琳等: "《废弃风电叶片纤维对磷建筑石膏材料性能影响》", 《非金属矿》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105130333B (en) | A kind of non-evaporating foster high-strength cement sawdust-board and preparation method thereof | |
| CN110590290B (en) | Fully-recycled glass fiber reinforced plastic reinforced concrete and preparation method thereof | |
| CN108247803B (en) | Preparation method of aldehyde-free mildew-free non-combustible bamboo shaving board | |
| CN113735512B (en) | Autoclaved aerated concrete block and preparation method thereof | |
| CN103073238A (en) | Novel wall material and preparation technology thereof | |
| CN107913688A (en) | The preparation process of modified coal ash | |
| CN114230299B (en) | Full-solid-waste high-performance light material and preparation method and application thereof | |
| EP0964837A1 (en) | Glass formula for avoiding asr | |
| CN112479663A (en) | Calcium silicate board prepared from industrial solid wastes and preparation method thereof | |
| CN112209648A (en) | Modified waste rubber, preparation method thereof and sound insulation mortar | |
| CN115724640B (en) | Gypsum slag cement concrete and preparation method thereof | |
| CN115286343A (en) | Regenerated fiber gypsum board with negative oxygen ion slow release function and preparation method thereof | |
| JP6644184B1 (en) | Recycled raw material for lightweight cellular concrete and method for producing lightweight cellular concrete using the same | |
| CN106116399B (en) | A kind of anion healthy plasterboard | |
| CN100449085C (en) | Method for making light water-permeable concrete pavement brick | |
| CN116462437A (en) | Modified recycled aggregate and preparation method and application thereof | |
| CN103833295A (en) | Foam cement warming plate, and composition and method for manufacturing the same | |
| CN103553465B (en) | A kind of rejected material solidifying agent containing modified Nano carbide slag | |
| CN113800863B (en) | Modified recycled aggregate concrete with electromagnetic wave-transmitting function and preparation method thereof | |
| CN106587867B (en) | The building block and preparation method thereof prepared using river sand as raw material | |
| CN115286342A (en) | Self-purification regenerated fiber gypsum board and preparation method thereof | |
| CN112142387A (en) | Preparation method of environment-friendly water-saving recycled concrete | |
| EP4299545A1 (en) | Cementitious powder, method of preparation and use thereof | |
| CN108129088A (en) | A kind of novel environment friendly plank and preparation method thereof | |
| JP2004018353A (en) | Low specific gravity calcium silicate hardened body and its producing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |