CN112919873B - Light ceiling and preparation method thereof - Google Patents
Light ceiling and preparation method thereof Download PDFInfo
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- CN112919873B CN112919873B CN202110196263.4A CN202110196263A CN112919873B CN 112919873 B CN112919873 B CN 112919873B CN 202110196263 A CN202110196263 A CN 202110196263A CN 112919873 B CN112919873 B CN 112919873B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
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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
- C04B2111/40—Porous or lightweight materials
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- 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
Abstract
The invention discloses a light ceiling and a preparation method thereof, wherein the light ceiling is prepared from the following raw materials: modified diatomite, ordinary Portland cement, gypsum, attapulgite, zinc oxide, bone glue, composite modified plant fibers, chitosan, calcium sulfate, tributyl phosphate, borax, sodium trimetaphosphate, starch ether, aluminum silicate and deionized water. The light ceiling has low density and good flexural strength, and the ceiling with light weight and high strength is obtained; the light ceiling is mainly prepared from modified diatomite, composite modified plant fibers, gypsum and clay minerals, can be effectively light, and has high strength when the modified diatomite and the composite modified plant fibers are added.
Description
Technical Field
The invention relates to the technical field of ceilings, in particular to a light ceiling and a preparation method thereof.
Background
Diatomaceous earth is a siliceous rock formed from silicate remains of unicellular diatoms. The main mineral component is opal and its variant, and the chemical component is mainly SiO 2 And contains a small amount of Al 2 O 3 、Fe 2 O 3 、CaO、Na 2 O, mgO, etc. The diatomite has high chemical stability, is only dissolved in hydrofluoric acid, is insoluble in any other strong acid, and is easy to dissolve in alkali. The diatomite has light weight, and the diatomite bulk density in China is 0.34-0.65 g/cm < 3 >; the specific surface area is large and is generally 19-65 m2/g; the porosity is high, and the pore volume is generally 0.45-0.98 cm < 3 >/g. Therefore, the diatomite has stronger activity and adsorption characteristics, and the special physical and chemical properties of the diatomite lead the diatomite to have wide application。
At present, the industry development trend of the ceiling building material is to produce light weight, but the light weight ceiling on the market cannot have strength at the same time, and cannot achieve the high strength light weight ceiling.
Disclosure of Invention
The invention provides a light ceiling and a preparation method thereof, wherein the ceiling has low density and high flexural strength, and the ceiling with light weight and high strength is obtained.
The invention solves the technical problems by adopting the following technical scheme:
a light ceiling is prepared from the following raw materials in parts by weight: 28-35 parts of modified diatomite, 18-23 parts of ordinary silicate cement, 8-12 parts of gypsum, 6-10 parts of attapulgite, 3-6 parts of zinc oxide, 2-4 parts of bone glue, 1-3 parts of composite modified plant fiber, 1.2-3 parts of chitosan, 0.8-2 parts of calcium sulfate, 0.8-2 parts of tributyl phosphate, 0.8-1.8 parts of borax, 0.8-1.5 parts of sodium trimetaphosphate, 0.6-1.2 parts of starch ether, 0.4-0.8 part of aluminum silicate and 200-250 parts of deionized water.
As a preferable scheme, the light ceiling is prepared from the following raw materials in parts by weight: 30-35 parts of modified diatomite, 19-23 parts of ordinary silicate cement, 8-10 parts of gypsum, 6-9 parts of attapulgite, 3-5 parts of zinc oxide, 2.5-4 parts of bone glue, 1.5-3 parts of composite modified plant fiber, 1.8-3 parts of chitosan, 1-2 parts of calcium sulfate, 1-2 parts of tributyl phosphate, 0.8-1.2 parts of borax, 0.8-1.2 parts of sodium trimetaphosphate, 0.6-1 part of starch ether, 0.4-0.7 part of aluminum silicate and 200-240 parts of deionized water.
As a most preferred scheme, the light ceiling is made from the following raw materials in parts by weight: 32 parts of modified diatomite, 20 parts of ordinary portland cement, 9 parts of gypsum, 8 parts of attapulgite, 4 parts of zinc oxide, 3 parts of bone glue, 2 parts of composite modified plant fiber, 2 parts of chitosan, 1.8 parts of calcium sulfate, 1.5 parts of tributyl phosphate, 1 part of borax, 1 part of sodium trimetaphosphate, 0.7 part of starch ether, 0.5 part of aluminum silicate and 213.5 parts of deionized water.
As a preferable scheme, the preparation method of the modified diatomite comprises the following steps:
s1, calcining diatomite at 480-550 ℃ for 2-6 hours to obtain pretreated diatomite;
s2, adding 0.8-2 parts of glass fiber and 1-3 parts of nano titanium dioxide into 20-30 parts of mixed acid, and uniformly stirring to obtain a mixed solution;
s3, adding 4-8 parts of pretreated diatomite and 0.4-1 part of urea into the mixed solution, adding 0.05-0.15 part of silane coupling agent KH550 and 0.05-0.15 part of silane coupling agent KH570, performing ultrasonic treatment for 25-40 min at 400-800W, uniformly stirring, and filtering to obtain a mixed material;
s4, steaming the mixture by using a steaming kettle, and drying to obtain modified diatomite; the parts are all parts by weight.
As a preferable scheme, the mixed acid is prepared from concentrated sulfuric acid and concentrated hydrochloric acid according to a weight ratio of 1: (0.5-2).
The inventor of the invention finds in a great deal of researches that through carrying out calcination pretreatment on diatomite, uniformly filling glass fiber and nano titanium dioxide into the hole structure of the diatomite, and carrying out autoclaved modification again, the surface of the diatomite is rich in various functional groups, meanwhile, impurities are removed, the specific surface area is increased, and therefore the diatomite can be better combined with other substances, has high bonding force with other substances, and is obtained.
Meanwhile, the inventor finds that if the glass fiber and the nano titanium dioxide are not filled, only the autoclaved modification is adopted, the collapse of the pore structure after the autoclaved modification can be caused, so that the modification effect can not be achieved, and if the single glass fiber and the nano titanium dioxide are not filled, the strength is improved (compared with the strength of diatomite), but the density is increased, so that the modified diatomite with small density and high strength can be obtained through calcination pretreatment, filling and autoclaved modification.
As a preferable scheme, the pressure of the autoclaved treatment is 0.3-0.5 MPa, the temperature is 120-150 ℃, and the autoclaved time is 40-70 min.
As a preferable scheme, the preparation method of the composite modified plant fiber comprises the following steps:
s11, adding 5-10 parts of sisal fibers, 5-10 parts of coconut fibers and 5-10 parts of jute fibers into 40-80 parts of sodium hydroxide solution, performing 300-600W ultrasonic treatment for 20-50 min, filtering, drying, and crushing to 50-100 meshes to obtain pretreated plant fibers;
s12, placing the pretreated plant fiber into a closed tank, introducing water vapor into the closed tank, performing steam explosion treatment for 40-80S under 0.6-0.9 MPa, and taking out to obtain secondary treated plant fiber;
s13, adding the secondary treatment plant fiber into the soaking solution, soaking for 4-10 hours, and drying to obtain the composite modified plant fiber; the parts are all parts by weight.
As a preferable scheme, the mass fraction of the sodium hydroxide solution is 12-18%.
As a preferable scheme, the soaking solution is prepared from the following components in parts by weight: 0.5-1.5 parts of silane coupling agent KH172, 0.8-2 parts of pectase, 1-2 parts of sodium alginate, 2-5 parts of citric acid, 18-25 parts of acetic anhydride and 18-25 parts of diethyl ether.
The inventor of the invention finds that when a single plant fiber is applied in the invention, the density and the strength cannot be considered, namely, a light high-strength ceiling cannot be obtained, so that a plurality of plant fibers are required to be mixed.
The invention also provides a preparation method of the light ceiling, which comprises the following steps:
s21, adding modified diatomite, ordinary portland cement, gypsum, attapulgite, zinc oxide, bone cement, composite modified plant fibers, chitosan, calcium sulfate, tributyl phosphate, borax, sodium trimetaphosphate, starch ether, aluminum silicate and deionized water into a mixer, and uniformly stirring to obtain slurry;
s22, pressing the slurry to form, and drying by a dryer until the moisture is lower than 8wt%, thus obtaining the light ceiling.
The invention has the beneficial effects that: (1) The light ceiling has low density and good flexural strength, and the ceiling with light weight and high strength is obtained; (2) The light ceiling board is mainly prepared from the raw materials of the modified diatomite, the composite modified plant fiber, the gypsum and the clay mineral, can be effectively light, and has high strength while light (low density) by adding the modified diatomite and the composite modified plant fiber.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the present invention, the parts are parts by weight unless specifically stated otherwise.
Example 1
The light ceiling is prepared from the following raw materials in parts by weight: 32 parts of modified diatomite, 20 parts of ordinary portland cement, 9 parts of gypsum, 8 parts of attapulgite, 4 parts of zinc oxide, 3 parts of bone glue, 2 parts of composite modified plant fiber, 2 parts of chitosan, 1.8 parts of calcium sulfate, 1.5 parts of tributyl phosphate, 1 part of borax, 1 part of sodium trimetaphosphate, 0.7 part of starch ether, 0.5 part of aluminum silicate and 213.5 parts of deionized water.
The preparation method of the modified diatomite comprises the following steps:
s1, calcining diatomite at 520 ℃ for 3 hours to obtain pretreated diatomite;
s2, adding 1 part of glass fiber and 1.5 parts of nano titanium dioxide into 27.5 parts of mixed acid, and uniformly stirring to obtain a mixed solution; the mixed acid is prepared from concentrated sulfuric acid and concentrated hydrochloric acid according to a weight ratio of 1:1, preparing the mixture;
s3, adding 5 parts of pretreated diatomite and 0.6 part of urea into the mixed solution, adding 0.1 part of silane coupling agent KH550 and 0.1 part of silane coupling agent KH570, performing 500W ultrasonic treatment for 30min, uniformly stirring, and filtering to obtain a mixture;
s4, steaming the mixture by using a steaming kettle, and drying to obtain modified diatomite; the pressure of the autoclaved treatment is 0.4MPa, the temperature is 130 ℃, and the autoclaved time is 60min; the parts are all parts by weight.
The preparation method of the composite modified plant fiber comprises the following steps:
s11, adding 6 parts of sisal fibers, 6 parts of coconut shell fibers and 6 parts of jute fibers into 50 parts of sodium hydroxide solution with the mass fraction of 15%, performing 400W ultrasonic treatment for 30min, filtering, drying and crushing to 80 meshes to obtain pretreated plant fibers;
s12, placing the pretreated plant fiber into a closed tank, introducing water vapor into the closed tank, performing steam explosion treatment for 60S under 0.8MPa, and taking out to obtain secondary treated plant fiber;
s13, adding the secondary treatment plant fiber into the soaking solution, soaking for 8 hours, and drying to obtain the composite modified plant fiber; the parts are all parts by weight.
The soaking liquid is prepared from the following components in parts by weight: 1 part of silane coupling agent KH172, 1.2 parts of pectase, 1.5 parts of sodium alginate, 4 parts of citric acid, 21 parts of acetic anhydride and 21.3 parts of diethyl ether.
The preparation method of the light ceiling comprises the following steps:
s21, adding modified diatomite, ordinary portland cement, gypsum, attapulgite, zinc oxide, bone cement, composite modified plant fibers, chitosan, calcium sulfate, tributyl phosphate, borax, sodium trimetaphosphate, starch ether, aluminum silicate and deionized water into a mixer, and uniformly stirring to obtain slurry;
s22, pressing the slurry to form, and drying by a dryer until the moisture is lower than 8wt%, thus obtaining the light ceiling.
Example 2
A light ceiling is prepared from the following raw materials in parts by weight: 28 parts of modified diatomite, 18 parts of ordinary portland cement, 8 parts of gypsum, 6 parts of attapulgite, 3 parts of zinc oxide, 2 parts of bone glue, 1 part of composite modified plant fiber, 1.2 parts of chitosan, 0.8 part of calcium sulfate, 0.8 part of tributyl phosphate, 0.8 part of borax, 0.8 part of sodium trimetaphosphate, 0.6 part of starch ether, 0.4 part of aluminum silicate and 200 parts of deionized water.
The preparation method of the modified diatomite comprises the following steps:
s1, calcining diatomite at 520 ℃ for 3 hours to obtain pretreated diatomite;
s2, adding 1 part of glass fiber and 1.5 parts of nano titanium dioxide into 27.5 parts of mixed acid, and uniformly stirring to obtain a mixed solution; the mixed acid is prepared from concentrated sulfuric acid and concentrated hydrochloric acid according to a weight ratio of 1:1, preparing the mixture;
s3, adding 5 parts of pretreated diatomite and 0.6 part of urea into the mixed solution, adding 0.1 part of silane coupling agent KH550 and 0.1 part of silane coupling agent KH570, performing 500W ultrasonic treatment for 30min, uniformly stirring, and filtering to obtain a mixture;
s4, steaming the mixture by using a steaming kettle, and drying to obtain modified diatomite; the pressure of the autoclaved treatment is 0.4MPa, the temperature is 130 ℃, and the autoclaved time is 60min; the parts are all parts by weight.
The preparation method of the composite modified plant fiber comprises the following steps:
s11, adding 6 parts of sisal fibers, 6 parts of coconut shell fibers and 6 parts of jute fibers into 50 parts of sodium hydroxide solution with the mass fraction of 15%, performing 400W ultrasonic treatment for 30min, filtering, drying and crushing to 80 meshes to obtain pretreated plant fibers;
s12, placing the pretreated plant fiber into a closed tank, introducing water vapor into the closed tank, performing steam explosion treatment for 60S under 0.8MPa, and taking out to obtain secondary treated plant fiber;
s13, adding the secondary treatment plant fiber into the soaking solution, soaking for 8 hours, and drying to obtain the composite modified plant fiber; the parts are all parts by weight.
The soaking liquid is prepared from the following components in parts by weight: 1 part of silane coupling agent KH172, 1.2 parts of pectase, 1.5 parts of sodium alginate, 4 parts of citric acid, 21 parts of acetic anhydride and 21.3 parts of diethyl ether.
The preparation method of the light ceiling comprises the following steps:
s21, adding modified diatomite, ordinary portland cement, gypsum, attapulgite, zinc oxide, bone cement, composite modified plant fibers, chitosan, calcium sulfate, tributyl phosphate, borax, sodium trimetaphosphate, starch ether, aluminum silicate and deionized water into a mixer, and uniformly stirring to obtain slurry;
s22, pressing the slurry to form, and drying by a dryer until the moisture is lower than 8wt%, thus obtaining the light ceiling.
Example 3
A light ceiling is prepared from the following raw materials in parts by weight: 30 parts of modified diatomite, 23 parts of ordinary portland cement, 12 parts of gypsum, 10 parts of attapulgite, 6 parts of zinc oxide, 4 parts of bone glue, 1.8 parts of composite modified plant fiber, 3 parts of chitosan, 2 parts of calcium sulfate, 2 parts of tributyl phosphate, 1.8 parts of borax, 1.5 parts of sodium trimetaphosphate, 1.2 parts of starch ether, 0.8 part of aluminum silicate and 250 parts of deionized water.
The preparation method of the modified diatomite comprises the following steps:
s1, calcining diatomite at 520 ℃ for 3 hours to obtain pretreated diatomite;
s2, adding 1 part of glass fiber and 1.5 parts of nano titanium dioxide into 27.5 parts of mixed acid, and uniformly stirring to obtain a mixed solution; the mixed acid is prepared from concentrated sulfuric acid and concentrated hydrochloric acid according to a weight ratio of 1:1, preparing the mixture;
s3, adding 5 parts of pretreated diatomite and 0.6 part of urea into the mixed solution, adding 0.1 part of silane coupling agent KH550 and 0.1 part of silane coupling agent KH570, performing 500W ultrasonic treatment for 30min, uniformly stirring, and filtering to obtain a mixture;
s4, steaming the mixture by using a steaming kettle, and drying to obtain modified diatomite; the pressure of the autoclaved treatment is 0.4MPa, the temperature is 130 ℃, and the autoclaved time is 60min; the parts are all parts by weight.
The preparation method of the composite modified plant fiber comprises the following steps:
s11, adding 6 parts of sisal fibers, 6 parts of coconut shell fibers and 6 parts of jute fibers into 50 parts of sodium hydroxide solution with the mass fraction of 15%, performing 400W ultrasonic treatment for 30min, filtering, drying and crushing to 80 meshes to obtain pretreated plant fibers;
s12, placing the pretreated plant fiber into a closed tank, introducing water vapor into the closed tank, performing steam explosion treatment for 60S under 0.8MPa, and taking out to obtain secondary treated plant fiber;
s13, adding the secondary treatment plant fiber into the soaking solution, soaking for 8 hours, and drying to obtain the composite modified plant fiber; the parts are all parts by weight.
The soaking liquid is prepared from the following components in parts by weight: 1 part of silane coupling agent KH172, 1.2 parts of pectase, 1.5 parts of sodium alginate, 4 parts of citric acid, 21 parts of acetic anhydride and 21.3 parts of diethyl ether.
The preparation method of the light ceiling comprises the following steps:
s21, adding modified diatomite, ordinary portland cement, gypsum, attapulgite, zinc oxide, bone cement, composite modified plant fibers, chitosan, calcium sulfate, tributyl phosphate, borax, sodium trimetaphosphate, starch ether, aluminum silicate and deionized water into a mixer, and uniformly stirring to obtain slurry;
s22, pressing the slurry to form, and drying by a dryer until the moisture is lower than 8wt%, thus obtaining the light ceiling.
Example 4
A light ceiling is prepared from the following raw materials in parts by weight: 30 parts of modified diatomite, 19 parts of ordinary portland cement, 8 parts of gypsum, 6 parts of attapulgite, 3 parts of zinc oxide, 2.5 parts of bone glue, 1.5 parts of composite modified plant fiber, 1.8 parts of chitosan, 1 part of calcium sulfate, 1 part of tributyl phosphate, 0.8 part of borax, 0.8 part of sodium trimetaphosphate, 0.6 part of starch ether, 0.4 part of aluminum silicate and 200 parts of deionized water.
The preparation method of the modified diatomite comprises the following steps:
s1, calcining diatomite at 520 ℃ for 3 hours to obtain pretreated diatomite;
s2, adding 1 part of glass fiber and 1.5 parts of nano titanium dioxide into 27.5 parts of mixed acid, and uniformly stirring to obtain a mixed solution; the mixed acid is prepared from concentrated sulfuric acid and concentrated hydrochloric acid according to a weight ratio of 1:1, preparing the mixture;
s3, adding 5 parts of pretreated diatomite and 0.6 part of urea into the mixed solution, adding 0.1 part of silane coupling agent KH550 and 0.1 part of silane coupling agent KH570, performing 500W ultrasonic treatment for 30min, uniformly stirring, and filtering to obtain a mixture;
s4, steaming the mixture by using a steaming kettle, and drying to obtain modified diatomite; the pressure of the autoclaved treatment is 0.4MPa, the temperature is 130 ℃, and the autoclaved time is 60min; the parts are all parts by weight.
The preparation method of the composite modified plant fiber comprises the following steps:
s11, adding 6 parts of sisal fibers, 6 parts of coconut shell fibers and 6 parts of jute fibers into 50 parts of sodium hydroxide solution with the mass fraction of 15%, performing 400W ultrasonic treatment for 30min, filtering, drying and crushing to 80 meshes to obtain pretreated plant fibers;
s12, placing the pretreated plant fiber into a closed tank, introducing water vapor into the closed tank, performing steam explosion treatment for 60S under 0.8MPa, and taking out to obtain secondary treated plant fiber;
s13, adding the secondary treatment plant fiber into the soaking solution, soaking for 8 hours, and drying to obtain the composite modified plant fiber; the parts are all parts by weight.
The soaking liquid is prepared from the following components in parts by weight: 1 part of silane coupling agent KH172, 1.2 parts of pectase, 1.5 parts of sodium alginate, 4 parts of citric acid, 21 parts of acetic anhydride and 21.3 parts of diethyl ether.
The preparation method of the light ceiling comprises the following steps:
s21, adding modified diatomite, ordinary portland cement, gypsum, attapulgite, zinc oxide, bone cement, composite modified plant fibers, chitosan, calcium sulfate, tributyl phosphate, borax, sodium trimetaphosphate, starch ether, aluminum silicate and deionized water into a mixer, and uniformly stirring to obtain slurry;
s22, pressing the slurry to form, and drying by a dryer until the moisture is lower than 8wt%, thus obtaining the light ceiling.
Comparative example 1
Comparative example 1 differs from example 1 in that comparative example 1 replaces the modified diatomaceous earth with diatomaceous earth, all other things being equal.
Comparative example 2
Comparative example 2 is different from example 1 in that the preparation method of the modified diatomaceous earth described in comparative example 2 is different from example 1, and the other are the same.
The preparation method of the modified diatomite comprises the following steps:
s1, calcining diatomite at 520 ℃ for 3 hours to obtain pretreated diatomite;
s2, adding 1 part of glass fiber and 1.5 parts of nano titanium dioxide into 27.5 parts of mixed acid, and uniformly stirring to obtain a mixed solution; the mixed acid is prepared from concentrated sulfuric acid and concentrated hydrochloric acid according to a weight ratio of 1:1, preparing the mixture;
s3, adding 5 parts of pretreated diatomite and 0.6 part of urea into the mixed solution, adding 0.1 part of silane coupling agent KH550 and 0.1 part of silane coupling agent KH570, performing 500W ultrasonic treatment for 30min, uniformly stirring, filtering to obtain a mixture, and drying to obtain modified diatomite; the parts are all parts by weight.
Comparative example 3
Comparative example 3 is different from example 1 in that the preparation method of the modified diatomaceous earth described in comparative example 3 is different from example 1, and the other are the same.
The preparation method of the modified diatomite comprises the following steps:
s1, calcining diatomite at 520 ℃ for 3 hours to obtain pretreated diatomite;
s2, adding 5 parts of pretreated diatomite and 0.6 part of urea into 30 parts of deionized water, adding 0.1 part of silane coupling agent KH550 and 0.1 part of silane coupling agent KH570, performing ultrasonic treatment for 30min at 500W, uniformly stirring, and filtering to obtain a mixture;
s3, steaming the mixture by using a steaming kettle, and drying to obtain modified diatomite; the pressure of the autoclaved treatment is 0.4MPa, the temperature is 130 ℃, and the autoclaved time is 60min; the parts are all parts by weight.
Comparative example 4
Comparative example 4 differs from example 1 in that comparative example 4 does not contain the composite modified plant fiber described, all other things being equal.
Comparative example 5
Comparative example 5 differs from example 1 in that comparative example 5 replaces the composite modified plant fiber with an equivalent amount of composite plant fiber, all other things being equal.
In the comparative example, the composite plant fiber is prepared from sisal fiber, coir fiber and jute fiber according to the weight ratio of 1:1: 1.
Comparative example 6
Comparative example 6 is different from example 1 in that the preparation method of the composite modified plant fiber described in comparative example 6 is different from example 1, and the other are the same.
The preparation method of the composite modified plant fiber comprises the following steps:
s11, adding 6 parts of sisal fibers, 6 parts of coconut shell fibers and 6 parts of jute fibers into 50 parts of sodium hydroxide solution with the mass fraction of 15%, performing 400W ultrasonic treatment for 30min, filtering, drying and crushing to 80 meshes to obtain pretreated plant fibers;
s12, placing the pretreated plant fiber into a closed tank, introducing water vapor into the closed tank, performing steam explosion treatment for 60S under 0.8MPa, and taking out to obtain the composite modified plant fiber; the parts are all parts by weight.
Comparative example 7
Comparative example 7 is different from example 1 in that the preparation method of the composite modified plant fiber described in comparative example 7 is different from example 1, and the other are the same.
The preparation method of the composite modified plant fiber comprises the following steps:
s11, adding 6 parts of sisal fibers, 6 parts of coconut shell fibers and 6 parts of jute fibers into 50 parts of sodium hydroxide solution with the mass fraction of 15%, performing 400W ultrasonic treatment for 30min, filtering, drying and crushing to 80 meshes to obtain pretreated plant fibers;
s12, adding the pretreated plant fiber into the soaking solution, soaking for 8 hours, and drying to obtain the composite modified plant fiber; the parts are all parts by weight.
The soaking liquid is prepared from the following components in parts by weight: 1 part of silane coupling agent KH172, 1.2 parts of pectase, 1.5 parts of sodium alginate, 4 parts of citric acid, 21 parts of acetic anhydride and 21.3 parts of diethyl ether.
To further demonstrate the effect of the present invention, the following test methods were provided:
1. the ceilings described in examples 1 to 4 and comparative examples 1 to 7 were made into 50mm×50mm×40mm for testing density and flexural strength, and the flexural strength was tested using a DKZ-5000 cement electric flexural tester, and the test results are shown in table 1.
Table 1 test results
As can be seen from Table 1, the lightweight ceiling according to the present invention has a low density and a high flexural strength.
As is clear from comparative examples 1 to 4, different raw material ratios can affect the density and flexural strength, wherein example 1 is the optimum ratio and has the optimum density and flexural strength.
Comparative example 1 and comparative example 1 show that the modified diatomaceous earth of the present invention can significantly improve flexural strength and reduce density.
As can be seen from comparative examples 1 and 2 and 3, the modified diatomaceous earth prepared by the preparation method of the present invention can significantly improve the flexural strength and reduce the density, and if the preparation method is different from example 1, the flexural strength is reduced and the density is increased.
As can be seen from comparative examples 1 and 4-5, the composite modified plant fiber of the present invention can significantly improve flexural strength and reduce density.
As can be seen from comparative examples 1 and 6 and 7, the composite modified plant fiber prepared by the preparation method of the present invention can significantly improve flexural strength and reduce density, and if the preparation method is different from example 1, flexural strength is reduced and density is increased.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of the claims.
Claims (8)
1. The light ceiling is characterized by being prepared from the following raw materials in parts by weight: 28-35 parts of modified diatomite, 18-23 parts of ordinary portland cement, 8-12 parts of gypsum, 6-10 parts of attapulgite, 3-6 parts of zinc oxide, 2-4 parts of bone glue, 1-3 parts of composite modified plant fiber, 1.2-3 parts of chitosan, 0.8-2 parts of calcium sulfate, 0.8-2 parts of tributyl phosphate, 0.8-1.8 parts of borax, 0.8-1.5 parts of sodium trimetaphosphate, 0.6-1.2 parts of starch ether, 0.4-0.8 part of aluminum silicate and 200-250 parts of deionized water;
the preparation method of the modified diatomite comprises the following steps:
s1, calcining diatomite at 480-550 ℃ for 2-6 hours to obtain pretreated diatomite;
s2, adding 0.8-2 parts of glass fiber and 1-3 parts of nano titanium dioxide into 20-30 parts of mixed acid, and uniformly stirring to obtain a mixed solution;
s3, adding 4-8 parts of pretreated diatomite and 0.4-1 part of urea into the mixed solution, adding 0.05-0.15 part of silane coupling agent KH550 and 0.05-0.15 part of silane coupling agent KH570, performing ultrasonic treatment for 25-40 min at 400-800W, uniformly stirring, and filtering to obtain a mixed material;
s4, steaming the mixture by using a steaming kettle, and drying to obtain modified diatomite; the parts are all parts by weight;
the preparation method of the composite modified plant fiber comprises the following steps:
s11, adding 5-10 parts of sisal fibers, 5-10 parts of coconut fibers and 5-10 parts of jute fibers into 40-80 parts of sodium hydroxide solution, performing 300-600W ultrasonic treatment for 20-50 min, filtering, drying, and crushing to 50-100 meshes to obtain pretreated plant fibers;
s12, placing the pretreated plant fiber into a closed tank, introducing water vapor into the closed tank, performing steam explosion treatment for 40-80S under 0.6-0.9 MPa, and taking out to obtain secondary treated plant fiber;
s13, adding the secondary treatment plant fiber into the soaking solution, soaking for 4-10 hours, and drying to obtain the composite modified plant fiber; the parts are all parts by weight.
2. The light ceiling tile of claim 1, wherein said light ceiling tile is made from the following raw materials in parts by weight: 30-35 parts of modified diatomite, 19-23 parts of ordinary silicate cement, 8-10 parts of gypsum, 6-9 parts of attapulgite, 3-5 parts of zinc oxide, 2.5-4 parts of bone glue, 1.5-3 parts of composite modified plant fiber, 1.8-3 parts of chitosan, 1-2 parts of calcium sulfate, 1-2 parts of tributyl phosphate, 0.8-1.2 parts of borax, 0.8-1.2 parts of sodium trimetaphosphate, 0.6-1 part of starch ether, 0.4-0.7 part of aluminum silicate and 200-240 parts of deionized water.
3. The light ceiling tile of claim 1, wherein said light ceiling tile is made from the following raw materials in parts by weight: 32 parts of modified diatomite, 20 parts of ordinary portland cement, 9 parts of gypsum, 8 parts of attapulgite, 4 parts of zinc oxide, 3 parts of bone glue, 2 parts of composite modified plant fiber, 2 parts of chitosan, 1.8 parts of calcium sulfate, 1.5 parts of tributyl phosphate, 1 part of borax, 1 part of sodium trimetaphosphate, 0.7 part of starch ether, 0.5 part of aluminum silicate and 213.5 parts of deionized water.
4. The light ceiling tile of claim 1 wherein said mixed acid is prepared from concentrated sulfuric acid and concentrated hydrochloric acid in a weight ratio of 1: (0.5-2).
5. The lightweight ceiling tile of claim 1 wherein the pressure of the autoclaving is 0.3 to 0.5mpa, the temperature is 120 to 150 ℃, and the autoclaving time is 40 to 70 minutes.
6. The light ceiling tile of claim 1, wherein the sodium hydroxide solution is 12-18% by mass.
7. The light ceiling tile of claim 1, wherein said soak solution is formulated from the following parts by weight: 0.5-1.5 parts of silane coupling agent KH172, 0.8-2 parts of pectase, 1-2 parts of sodium alginate, 2-5 parts of citric acid, 18-25 parts of acetic anhydride and 18-25 parts of diethyl ether.
8. The method for manufacturing a lightweight ceiling tile according to any one of claims 1 to 7, comprising the steps of:
s21, adding modified diatomite, ordinary portland cement, gypsum, attapulgite, zinc oxide, bone cement, composite modified plant fibers, chitosan, calcium sulfate, tributyl phosphate, borax, sodium trimetaphosphate, starch ether, aluminum silicate and deionized water into a mixer, and uniformly stirring to obtain slurry;
s22, pressing the slurry to form, and drying by a dryer until the moisture is lower than 8wt%, thus obtaining the light ceiling.
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| CN105218053B (en) * | 2015-09-30 | 2017-03-22 | 沈阳建筑大学 | Non-autoclaved diatomaceous earth board and preparation method thereof |
| CN107089820A (en) * | 2017-06-05 | 2017-08-25 | 合肥聪亨新型建材科技有限公司 | A kind of ecological, environmental protective indoor suspended ceiling material capable of purifying air and preparation method thereof |
| CN107226660A (en) * | 2017-08-02 | 2017-10-03 | 合肥仙之峰农业科技有限公司 | A kind of toughening type light cellular partition board and preparation method thereof |
| RU2693978C1 (en) * | 2018-04-05 | 2019-07-08 | Ооо Фирма "Вефт" | Dry plaster mixture for creating a sound-absorbing coating |
| CN109012575B (en) * | 2018-08-30 | 2022-01-04 | 武汉理工大学 | Method for improving specific surface area and adsorption capacity of calcined diatomite |
| CN109721770A (en) * | 2018-12-24 | 2019-05-07 | 华南理工大学 | The thermoplasticity and toughness of redox modified plant fibers regulate and control method and its application |
| CN111217560A (en) * | 2020-02-21 | 2020-06-02 | 郑州知淘信息科技有限责任公司 | Asbestos-free straw fiber reinforced cement board and preparation method thereof |
| CN111205052A (en) * | 2020-03-04 | 2020-05-29 | 郑州知淘信息科技有限责任公司 | Preparation method of asbestos-free plant fiber reinforced calcium silicate board and asbestos-free plant fiber reinforced calcium silicate board |
| CN111620666A (en) * | 2020-05-28 | 2020-09-04 | 深圳市智百灵建筑材料科技有限公司 | Preparation method of light partition board |
| CN111701578A (en) * | 2020-06-30 | 2020-09-25 | 广西夏阳环保科技有限公司 | Adsorbent for sewage treatment and preparation method thereof |
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