CN109516751B - Silicon fiber board with formaldehyde decomposition function and preparation method thereof - Google Patents

Silicon fiber board with formaldehyde decomposition function and preparation method thereof Download PDF

Info

Publication number
CN109516751B
CN109516751B CN201811642813.5A CN201811642813A CN109516751B CN 109516751 B CN109516751 B CN 109516751B CN 201811642813 A CN201811642813 A CN 201811642813A CN 109516751 B CN109516751 B CN 109516751B
Authority
CN
China
Prior art keywords
parts
pressure
stage
minutes
hours
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.)
Active
Application number
CN201811642813.5A
Other languages
Chinese (zh)
Other versions
CN109516751A (en
Inventor
何方贤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Fuxing Hangxiao Construction Co.,Ltd.
Original Assignee
Chengdu Science And Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chengdu Science And Technology Co ltd filed Critical Chengdu Science And Technology Co ltd
Priority to CN201811642813.5A priority Critical patent/CN109516751B/en
Publication of CN109516751A publication Critical patent/CN109516751A/en
Application granted granted Critical
Publication of CN109516751B publication Critical patent/CN109516751B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/10Lime cements or magnesium oxide cements
    • C04B28/12Hydraulic lime
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/30Producing shaped prefabricated articles from the material by applying the material on to a core or other moulding surface to form a layer thereon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/52Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • B28B1/525Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement containing organic fibres, e.g. wood fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00Coverings or linings, e.g. for walls or ceilings
    • E04F13/07Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0875Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00025Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/2092Resistance against biological degradation
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/30Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire

Abstract

The invention discloses a silicon fiber board with formaldehyde decomposition effect and a preparation method thereof, relates to the field of architectural decoration, and aims to solve the problem that the existing board cannot degrade adsorbed harmful substances. The product comprises a core layer and a surface layer, wherein the surface layer comprises the following raw materials in parts by weight: 7-10 parts of diatomite, 7-10 parts of lime, 1.6-2.5 parts of volcanic ash, 1-2 parts of silica micropowder, 1-2 parts of wood fiber, 1-2 parts of attapulgite, 0.1-0.5 part of hydroxyethyl cellulose, TiO2‑(C8H13O5N) N composite material 0.3-0.8 parts, tobermorite 1-2 parts and water 70-81 parts, wherein the core layer comprises the following raw materials in parts by weight: 7-10 parts of diatomite, 7-10 parts of lime, 2.4-3.0 parts of volcanic ash, 1.2-2.2 parts of wood fiber, 1-2 parts of calcium sulfate whisker, 0.1-0.5 part of hydroxyethyl cellulose, 1-2 parts of sepiolite and 70-80 parts of water. The finished product of the invention has the functions of antibiosis, adsorption and degradation of indoor harmful substances.

Description

Silicon fiber board with formaldehyde decomposition function and preparation method thereof
Technical Field
The invention relates to the field of architectural decoration, in particular to a silicon fiber board with formaldehyde decomposition function.
Background
The architectural decorative plate on the market mainly comprises an organic plate and an inorganic plate. The organic board is mainly a PVC board or a bamboo-wood fiberboard, a wood-plastic board, a stone-plastic board, a plastic-steel plate and the like which mainly comprise PVC derived materials. The organic materials are convenient to produce and process, have strong plasticity and rich decorative surfaces, but various plasticizers can be added in the production of the plates, and phthalate substances in the plasticizers can interfere the endocrine system of a human body and cause hormone imbalance to reduce the immunity of the human body; in the using process, the PVC material can also release hydrogen chloride gas, has strong stimulation effect on eye and respiratory mucosa, can cause chronic bronchitis, and even can induce cancer.
The inorganic board is produced by the raw materials from nature, the materials are rich, and the inorganic board is widely applied to the field of interior decoration as a decorative material, but the inorganic board has fewer varieties and single surface; the inorganic boards in the current market mainly comprise gypsum-based gypsum boards, cement-based cement fiber boards and calcium silicate boards, magnesite materials such as magnesia-based glass magnesium boards and the like, the physical and chemical properties of the boards are relatively stable, the price is low, but asbestos is added in the production process to a greater or lesser extent, the fibers are very fine and can not be seen by naked eyes, and when the fine fibers are sucked into the human body, the fine fibers are attached to and deposited in the lung to cause lung diseases; the inorganic plates belong to hard and brittle plates, are not easy to mold, are very easy to damage and break in use, have higher surface processing difficulty, cannot be used as a veneer independently, and need to be combined with paint or glue to compound various panels as decorations; can not be recycled, and can cause a large amount of construction waste and environmental pollution in the process of building renovation and secondary decoration.
At present, in the market, plates with adsorption functions are few, organic plates generally achieve the purpose of adsorbing formaldehyde by adding organic additives such as bamboo charcoal and active carbon, inorganic plates generally adsorb formaldehyde by using diatomite, but the two plates cannot decompose the absorbed formaldehyde, and after the adsorption of the plates reaches saturation, harmful substances are released into the air again to cause secondary pollution.
Under the environment that the country vigorously pushes assembly type building and interior decoration technology, the demand of assembly type materials is increasing day by day, the types of assembly type interior decoration materials on the market are limited at present, the requirements of the assembly type interior decoration materials are high, and the number of optional substrates is small. On one hand, the assembled interior material needs to have the performances of fire prevention, stability, air humidity and the like of inorganic materials, and simultaneously has the advantages of easy processing, good toughness and plasticity and the like of organic materials, more importantly, the assembled interior material needs to be environment-friendly and zero-pollution, also has the functions of adsorbing and degrading indoor harmful gases such as formaldehyde and the like, and eliminates pollution from the source of decorative materials.
In order to promote the development of the prefabricated building and interior technology and solve the above problems, the present invention provides a prefabricated interior substrate (silicon fiber board) and a method for preparing the same, wherein the finished board is an inorganic board capable of adsorbing and degrading formaldehyde, adjusting air humidity and improving air quality, and the raw material contains TiO2-(C8H13O5N) N composite material can thoroughly decompose harmful gases such as formaldehyde and the like, and eliminate pollution at the source of the interior decoration material; as an assembled built-in substrate, the wall surface, the top surface and the ground can be used, on one hand, the assembled built-in substrate can replace a gypsum board, does not need to process a base layer and paint, and can be directly used as an indoor wall surface ceiling or a wall facingThe board is used, and on the other hand, the nail-eating performance of the board is extremely strong, the board can replace a wood board to be used as a furniture board, and meanwhile, the board has high fiber content and is extremely easy to mold, can be bent into shapes such as an arc surface and the like, and enriches the decoration language; most importantly, the silicon fiber board is used as a green and environment-friendly material, can be recycled, and solves a series of social problems that construction waste cannot be recycled, the environment is polluted, resources are wasted and the like.
Disclosure of Invention
The present invention is directed to a silicon fiber board with formaldehyde decomposing effect, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a silicon fiber board with formaldehyde decomposition function comprises a core layer and a surface layer, wherein the core layer is wrapped in the surface layer, and the surface layer comprises the following raw materials in parts by weight: 7-10 parts of diatomite, 7-10 parts of lime, 1.6-2.5 parts of volcanic ash, 1-2 parts of silica micropowder, 1-2 parts of wood fiber, 1-2 parts of attapulgite, 0.1-0.5 part of hydroxyethyl cellulose, TiO2-(C8H13O5N) N composite material 0.3-0.8 parts, tobermorite 1-2 parts and water 70-81 parts, wherein the core layer comprises the following raw materials in parts by weight: 7-10 parts of diatomite, 7-10 parts of lime, 2.4-3.0 parts of volcanic ash, 1.2-2.2 parts of wood fiber, 1-2 parts of calcium sulfate whisker, 0.1-0.5 part of hydroxyethyl cellulose, 1-2 parts of sepiolite and 70-80 parts of water.
The preparation method of the silicon fiber board with the formaldehyde decomposition effect comprises the following specific steps:
step one, weighing a surface layer raw material and a core layer raw material according to a weight ratio;
step two, mixing all the surface layer raw materials and putting into a stirrer, fully stirring for 10-15 minutes to mix into first slurry, mixing all the core layer raw materials and putting into the stirrer, fully stirring for 10-15 minutes to mix into second slurry;
uniformly paving the first slurry on a blanket, uniformly paving the second slurry on the first slurry, uniformly paving the first slurry on the second slurry, and performing extrusion dehydration forming through a pressure forming cylinder to obtain a blank body, wherein the mass fraction of water in the blank body is 40-45%;
step four, the blank enters a press to be leveled and is finished in three stages, wherein the first stage is pressing for 5 minutes by a low-density plate press; the second stage is pressing for 5 minutes by a medium density board press; the third stage is high-density plate press pressing for 20 minutes, the pressure in the first stage is required to be slowly increased from zero to 300 kilograms, the pressure in the second stage is increased to 1000 tons and maintained, then the pressure in the third stage is increased from 1000 tons to 5000 tons and maintained for 10 minutes, the pressure in the fourth stage is increased from 5000 tons to 10000 tons and maintained for 5 minutes, and finally the pressure in the fourth stage is slowly decreased from 10000 tons to 0 in 5 minutes;
step five: placing the plate blank obtained in the step four in a pre-curing room for pre-curing for 3-6 hours;
step six: stacking the plate blanks obtained in the fifth step in a closed still kettle, then feeding air for steaming, wherein the whole process is divided into three stages, namely 24 hours in total, the first stage is boosting time which is 6 hours in total, the pressure is required to be 0-10MPa, and the pressure is required to be slowly uniform in the boosting process; the second stage is the pressure maintaining time, the total time is 15 hours, the pressure reaches the pressure maintaining, the pressure is 9.5-10.5MPa, and the pressure does not exceed the pressure maintaining requirement range in the period; the third stage is an exhaust stage, the time is 3 hours, and the pressure required by the operation is slowly reduced to zero at a constant speed;
step seven: naturally cooling the plate blank after the steaming and pressing is finished, and then baking at normal temperature to evaporate the water of the plate so as to obtain the finished plate required by the requirement.
As a further scheme of the invention: the pressure of the pressure forming cylinder in the third step is 2.5-3.0 MPa.
As a further scheme of the invention: and fifthly, controlling the temperature of the pre-curing room to be 30-40 ℃.
As a further scheme of the invention: the temperature of the second stage in the sixth step is 180-190 ℃.
As a further scheme of the invention: and seventhly, baking at the normal temperature of 70-95 ℃ for 2 hours.
As a further scheme of the invention: and the thickness of the finished plate in the step seven is 4-20 mm.
As a further scheme of the invention: and step three and step four can be replaced by respectively dehydrating and forming the first material paddle and the second material paddle to prepare a plate blank, then putting the plate blank according to the sequence of the first material paddle, the second material paddle and the first material paddle, and leveling the plate blank in a press to prepare the high-density plate.
TiO2-(C8H13O5The N) N composite material is made of TiO2And (C)8H13O5N) N, said (C)8H13O5N) N is a degradable natural chitin (chitosan), which is extracted from the shell of crustaceans such as shrimp and crab, and has strong reactive amino group (NH) due to the particularity of chitosan structure2) The formaldehyde and the TVOC can chemically react with various harmful gases, so toxic gases such as formaldehyde, TVOC and the like which are dissipated into the air can be captured and decomposed, and are converted into water and oxime (the molecular structure is similar to carbon dioxide), and meanwhile, the indoor peculiar smell is better purified; the TiO is2The board is an inorganic antibacterial material, can purify air, can accelerate the reaction rate of chemical reaction as a catalyst, and can achieve the function of degrading harmful gases such as formaldehyde by oxidizing, decomposing or converting formaldehyde into safe substances through specific chemical reaction.
TiO2-(C8H13O5N) N is prepared by the following steps: mixing nano TIO2Mixing the chitin and water or a water-organic solvent mixed system according to a certain proportion, adding 10mol/L NaOH, fully and uniformly stirring, placing the mixture into a closed high-pressure kettle made of stainless steel, reacting at a constant temperature of 160 ℃ and 180 ℃ for 24 hours, placing a reaction product into an oven, drying at 50 ℃ for 2 hours, and then placing the reaction product into a drying oven to naturally dry for 48 hours to obtain the chitin.
The thickness of the finished product prepared by the invention is 4-20mm, and the capacity is 0.7-1.2g/cm3The heat conductivity coefficient is 0.09-0.25w/(m.k), the compressive strength is 10-30MPa, and the flexural strength is 5-15 MPa.
Compared with the prior art, the invention has the beneficial effects that:
the raw materials of the invention are widely available, and the prepared finished plate is an inorganic plate which can resist bacteria, adsorb and degrade indoor harmful substances such as formaldehyde and the like, and has wide application prospect.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
The compositions of examples 1-2 are shown in Table 1, and the compositions of examples 3-4 are shown in Table 2.
TABLE 1
TABLE 2
The preparation method of the first embodiment is as follows:
the method comprises the following steps: weighing surface layer raw materials and core layer raw materials according to the weight ratio;
step two: mixing all the surface raw materials, putting the mixture into a stirrer, fully stirring the mixture for 15 minutes to obtain first slurry, controlling the concentration of the first slurry to be 13.5 percent by mass, and obtaining second slurry in the same way;
step three: adopting a copying method or a fourdrinier method to prepare a blank, firstly uniformly paving a first material paddle on a blanket, then uniformly paving a second material paddle on the first material paddle, then uniformly paving the first material paddle on the second material paddle, and then extruding, dehydrating and forming through a forming cylinder with the pressure of 2.8MPa to obtain a blank body, wherein the mass fraction of water contained in the blank body is between 42%;
step four: the blank obtained in the step three is put into a press to be leveled, the pressure is divided into three grades according to the density requirement of low density, medium density and high density, the pressure of the low density plate press is 200 tons, and the pressing time is 5 minutes; the pressure of the medium-density board press is required to be 1000 tons for 5 minutes; the high density plate press is pressed for 20 minutes and is completed in three stages, the pressure is required to slowly rise from zero to 300 kilograms in the first 5 minutes of the first stage, the pressure rises to 1000 tons and is maintained in the second stage for 5 minutes, then the pressure rises to 5000 tons and is maintained for 10 minutes in the third stage, the pressure rises to 10000 tons and is maintained for 5 minutes in the fourth stage, and finally the pressure slowly falls to 0 from 10000 tons in the last 5 minutes.
Step five: and (5) standing the plate blank obtained in the step five, and placing the plate blank in a pre-curing room at the temperature of 36 ℃ for pre-curing for 5 hours.
Step six: stacking the plate blanks obtained in the sixth step in a closed still kettle, then feeding air for steaming, wherein the whole process is 24 hours in total and is divided into three stages, the pressure rise time in the first stage is 6 hours in total, the pressure is required to be 0-10MPa, and the pressure in the pressure rise process is required to be slow and uniform; the second stage is pressure maintaining time, the total time is 15 hours, the pressure reaches the pressure maintaining, the pressure is 10.2MPa, the temperature reaches 185 ℃, and the pressure does not exceed the pressure maintaining pressure requirement range in the period; the third stage is an exhaust stage, the time is 3 hours, and the pressure is required to slowly and uniformly drop to zero during the operation.
Step seven: and naturally cooling the plate blank after the plate blank is autoclaved, and then baking the plate blank at normal temperature, wherein the baking time is continuously carried out for 2 hours, and the temperature is required to be controlled at 78 ℃, so that the water of the plate is evaporated, and the plate blank reaches the required finished plate.
Example one sheet obtained had a density of 0.98g/cm3The breaking strength is more than 8MPa, and the performance is moderate.
The preparation method of example two is as follows:
the method comprises the following steps: weighing surface layer raw materials and core layer raw materials according to the weight ratio;
step two: mixing all the surface raw materials, putting the mixture into a stirrer, fully stirring the mixture for 14 minutes to obtain first slurry, controlling the concentration of the first slurry to be 12.8 percent by mass, and obtaining second slurry in the same way;
step three: adopting a copying method or a fourdrinier method to prepare a blank, firstly uniformly paving a first material paddle on a blanket, then uniformly paving a second material paddle on the first material paddle, then uniformly paving the first material paddle on the second material paddle, and then extruding, dehydrating and forming through a forming cylinder with the pressure of 2.8MPa to obtain a blank body, wherein the mass fraction of water contained in the blank body is 42%;
step four: the blank obtained in the step three is put into a press to be leveled, the pressure is divided into three grades according to the density requirement of low density, medium density and high density, the pressure of the low density plate press is 200 tons, and the pressing time is 5 minutes; the pressure of the medium-density board press is required to be 1000 tons for 5 minutes; the high density plate press is pressed for 20 minutes and is completed in three stages, the pressure is required to slowly rise from zero to 300 kilograms in the first 5 minutes of the first stage, the pressure rises to 1000 tons and is maintained in the second stage for 5 minutes, then the pressure rises to 5000 tons and is maintained for 10 minutes in the third stage, the pressure rises to 10000 tons and is maintained for 5 minutes in the fourth stage, and finally the pressure slowly falls to 0 from 10000 tons in the last 5 minutes.
Step five: and (5) standing the slabs obtained in the step five, and placing the slabs in a pre-curing room with the temperature of 38 ℃ for pre-curing for 4.5 hours.
Step six: stacking the plate blanks obtained in the sixth step in a closed still kettle, then feeding air for steaming, wherein the whole process is 24 hours in total and is divided into three stages, the pressure rise time in the first stage is 6 hours in total, the pressure is required to be 0-10MPa, and the pressure in the pressure rise process is required to be slow and uniform; the second stage is pressure maintaining time, the total time is 15 hours, the pressure reaches the pressure maintaining, the pressure is 10.2MPa, the temperature reaches 185 ℃, and the pressure does not exceed the pressure maintaining pressure requirement range in the period; the third stage is an exhaust stage, the time is 3 hours, and the pressure is required to slowly and uniformly drop to zero during the operation.
Step seven: and naturally cooling the plate blank after the plate blank is autoclaved, and then baking the plate blank at normal temperature, wherein the baking time is continuously carried out for 2 hours, and the temperature is required to be controlled at 78 ℃, so that the water of the plate is evaporated, and the plate blank reaches the required finished plate.
Example two the resulting sheet had a density of 0.86g/cm3The breaking strength is more than 10MPa, and the performance is excellent.
The preparation method of example three is as follows:
the method comprises the following steps: weighing surface layer raw materials and core layer raw materials according to the weight ratio;
step two: mixing all the surface raw materials, putting the mixture into a stirrer, fully stirring the mixture for 12 minutes to obtain first slurry, controlling the concentration of the first slurry to be 13.6 percent by mass, and obtaining second slurry in the same way;
step three: respectively dehydrating and forming the first material paddle and the second material paddle to prepare a plate blank, and then putting the plate blank according to the sequence of the first material paddle, the second material paddle and the first material paddle to obtain a prepressing blank body;
step four: putting the pre-pressed blank obtained in the step three into a press for leveling, and dividing the pressure into three grades according to the density requirement of low density, medium density and high density, wherein the pressure of the low density plate press is 200 tons and the pressing time is 5 minutes; the pressure of the medium-density board press is required to be 1000 tons for 5 minutes; the high density plate press is pressed for 20 minutes and is completed in three stages, the pressure is required to slowly rise from zero to 300 kilograms in the first 5 minutes of the first stage, the pressure rises to 1000 tons and is maintained in the second stage for 5 minutes, then the pressure rises to 5000 tons and is maintained for 10 minutes in the third stage, the pressure rises to 10000 tons and is maintained for 5 minutes in the fourth stage, and finally the pressure slowly falls to 0 from 10000 tons in the last 5 minutes.
Step five: and (5) standing the plate blank obtained in the step five, and placing the plate blank in a pre-curing room with the temperature of 35 ℃ for pre-curing for 5 hours.
Step six: stacking the plate blanks obtained in the sixth step in a closed still kettle, then feeding air for steaming, wherein the whole process is 24 hours in total and is divided into three stages, the pressure rise time in the first stage is 6 hours in total, the pressure is required to be 0-10MPa, and the pressure in the pressure rise process is required to be slow and uniform; the second stage is pressure maintaining time, the total time is 15 hours, the pressure reaches the pressure maintaining, the pressure is 10.4MPa, the temperature reaches 188 ℃, and the pressure does not exceed the pressure maintaining pressure requirement range in the period; the third stage is an exhaust stage, the time is 3 hours, and the pressure is required to slowly and uniformly drop to zero during the operation.
Step seven: and naturally cooling the plate blank after the plate blank is autoclaved, and then baking the plate blank at normal temperature, wherein the baking time is continuously carried out for 2 hours, and the temperature is required to be controlled at 92 ℃, so that the water of the plate is evaporated, and the plate blank reaches the required finished plate.
The density of the board obtained in example three was 0.94g/cm3The flexural strength is more than 7MPa, the strength is low, but the toughness is good.
The preparation of example four is as follows:
the method comprises the following steps: weighing surface layer raw materials and core layer raw materials according to the weight ratio;
step two: mixing all the surface raw materials, putting the mixture into a stirrer, fully stirring the mixture for 15 minutes to obtain first slurry, controlling the concentration of the first slurry to be 14.5 percent by mass, and obtaining second slurry in the same way;
step three: respectively dehydrating and forming the first material paddle and the second material paddle to prepare a plate blank, and then putting the plate blank according to the sequence of the first material paddle, the second material paddle and the first material paddle to obtain a prepressing blank body;
step four: putting the pre-pressed blank obtained in the step three into a press for leveling, and dividing the pressure into three grades according to the density requirement of low density, medium density and high density, wherein the pressure of the low density plate press is 200 tons and the pressing time is 5 minutes; the pressure of the medium-density board press is required to be 1000 tons for 5 minutes; the high density plate press is pressed for 20 minutes and is completed in three stages, the pressure is required to slowly rise from zero to 300 kilograms in the first 5 minutes of the first stage, the pressure rises to 1000 tons and is maintained in the second stage for 5 minutes, then the pressure rises to 5000 tons and is maintained for 10 minutes in the third stage, the pressure rises to 10000 tons and is maintained for 5 minutes in the fourth stage, and finally the pressure slowly falls to 0 from 10000 tons in the last 5 minutes.
Step five: and (5) standing the slabs obtained in the step five, and pre-curing the slabs in a pre-curing room with the temperature of 36 ℃ for 8 hours.
Step six: stacking the plate blanks obtained in the sixth step in a closed still kettle, then feeding air for steaming, wherein the whole process is 24 hours in total and is divided into three stages, the pressure rise time in the first stage is 6 hours in total, the pressure is required to be 0-10MPa, and the pressure in the pressure rise process is required to be slow and uniform; the second stage is pressure maintaining time, the total time is 15 hours, the pressure reaches the pressure maintaining, the pressure is 9.9MPa, the temperature reaches 189 ℃, and the pressure does not exceed the pressure maintaining pressure requirement range in the period; the third stage is an exhaust stage, the time is 3 hours, and the pressure is required to slowly and uniformly drop to zero during the operation.
Step seven: and naturally cooling the plate blank after the plate blank is autoclaved, and then baking the plate blank at normal temperature, wherein the baking time is continuously carried out for 2 hours, and the temperature is required to be controlled at 86 ℃, so that the water of the plate is evaporated, and the plate blank reaches the required finished plate.
Example four the resulting board had a density of 1.14g/cm3The flexural strength is more than 9MPa, the strength is good, the density is high, and the hardness is high.
Preparing two 1 cubic meter experiment cabins, wherein the thickness of each experiment cabin is 10mm, the size of each experiment cabin is 100cm x 100cm, one experiment cabin is used for placing a test sample cabin, the other experiment cabin is used for placing a blank glass plate for comparison, a cabin seam is treated by sealant, a 30W fluorescent lamp is placed in the center of each experiment cabin and used for testing photocatalytic materials needing illumination, and a fan with the power of 15W is placed in the right side of each experiment cabin and used for homogenizing air in the cabin. Respectively placing the silicon fiber plate and the blank glass plate with the same size and not less than 250mm and 250mm into a sample bin and a comparison bin, then placing the glass plate into the bottom of an experiment bin, closing the experiment bin, then taking (3 +/-0.25) uL of analysis methanol solution by using a micro-injector, dripping the analysis methanol solution into the glass plate through an injection hole, and closing the main perforation. The two chambers are not opened with fluorescent lamps, the gas in the chambers is collected after being sealed for 1 hour to test the concentration, the concentration is the initial concentration, the gas in the chambers is collected after 24 hours and tested, the concentration is the final concentration, the chambers are opened for 1 minute before the gas is collected, the chambers are closed during sampling, and finally the formaldehyde purification efficiency is more than 90%.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The silicon fiber board with the formaldehyde decomposition function is characterized by comprising a core layer and a surface layer, wherein the core layer is wrapped in the surface layer, and the surface layer comprises the following raw materials in parts by weight: 7-10 parts of diatomite, 7-10 parts of lime, 1.6-2.5 parts of volcanic ash, 1-2 parts of silica micropowder, 1-2 parts of wood fiber, 1-2 parts of attapulgite, 0.1-0.5 part of hydroxyethyl cellulose, TiO20.3-0.8 part of- (C8H13O5N) n composite material, 1-2 parts of tobermorite and 70-81 parts of water, wherein the core layer comprises the following raw materials in parts by weight: 7-10 parts of diatomite, 7-10 parts of lime, 2.4-3.0 parts of volcanic ash, 1.2-2.2 parts of wood fiber, 1-2 parts of calcium sulfate whisker, 0.1-0.5 part of hydroxyethyl cellulose, 1-2 parts of sepiolite and 70-80 parts of water, wherein the preparation method of the silicon fiber board with the function of decomposing formaldehyde comprises the following specific steps:
step one, weighing a surface layer raw material and a core layer raw material according to a weight ratio;
step two, mixing all the surface layer raw materials and putting into a stirrer, fully stirring for 10-15 minutes to mix into first slurry, mixing all the core layer raw materials and putting into the stirrer, fully stirring for 10-15 minutes to mix into second slurry;
uniformly paving the first slurry on a blanket, uniformly paving the second slurry on the first slurry, uniformly paving the first slurry on the second slurry, and performing extrusion dehydration forming through a pressure forming cylinder to obtain a blank body, wherein the mass fraction of water in the blank body is 40-45%;
step four, the blank enters a press to be leveled and is finished in three stages, wherein the first stage is pressing for 5 minutes by a low-density plate press; the second stage is pressing for 5 minutes by a medium density board press; the third stage is high-density plate press pressing for 20 minutes, the pressure in the first stage is required to be slowly increased from zero to 300 kilograms, the pressure in the second stage is increased to 1000 tons and maintained, then the pressure in the third stage is increased from 1000 tons to 5000 tons and maintained for 10 minutes, the pressure in the fourth stage is increased from 5000 tons to 10000 tons and maintained for 5 minutes, and finally the pressure in the fourth stage is slowly decreased from 10000 tons to 0 in 5 minutes;
step five: placing the plate blank obtained in the step four in a pre-curing room for pre-curing for 3-6 hours;
step six: stacking the plate blanks obtained in the fifth step in a closed still kettle, then feeding air for steaming, wherein the whole process is divided into three stages, namely 24 hours in total, the first stage is boosting time which is 6 hours in total, the pressure is required to be 0-10MPa, and the pressure is required to be slowly uniform in the boosting process; the second stage is the pressure maintaining time, the total time is 15 hours, and the pressure is 9.5-10.5 MPa; the third stage is an exhaust stage, the time is 3 hours, and the pressure required by the operation is slowly reduced to zero at a constant speed;
step seven: naturally cooling the plate blank after the steaming and pressing is finished, and then baking at normal temperature to obtain the finished plate required by the requirement.
2. The silicon fiber board with formaldehyde decomposing effect according to claim 1, wherein the pressure of the pressure forming cylinder in the third step of the preparation method is 2.5-3.0 MPa.
3. The silicon fiber board with formaldehyde decomposing effect according to claim 1, wherein the temperature of the preculture room in the fifth step of the preparation method is 30-40 ℃.
4. The silicon fiber board with formaldehyde decomposing effect as claimed in claim 2 or 1, wherein the temperature of the second stage in the sixth step of the preparation method is 180-190 ℃.
5. The silicon fiber board with formaldehyde decomposing effect according to claim 1, wherein the temperature of the normal temperature baking in step seven of the preparation method is 70-95 ℃ for 2 hours.
6. The silicon fiber board with formaldehyde decomposing effect according to claim 1 or 5, wherein the thickness of the finished board in step seven of the preparation method is 4-20 mm.
CN201811642813.5A 2018-12-29 2018-12-29 Silicon fiber board with formaldehyde decomposition function and preparation method thereof Active CN109516751B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811642813.5A CN109516751B (en) 2018-12-29 2018-12-29 Silicon fiber board with formaldehyde decomposition function and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811642813.5A CN109516751B (en) 2018-12-29 2018-12-29 Silicon fiber board with formaldehyde decomposition function and preparation method thereof

Publications (2)

Publication Number Publication Date
CN109516751A CN109516751A (en) 2019-03-26
CN109516751B true CN109516751B (en) 2021-02-09

Family

ID=65797213

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811642813.5A Active CN109516751B (en) 2018-12-29 2018-12-29 Silicon fiber board with formaldehyde decomposition function and preparation method thereof

Country Status (1)

Country Link
CN (1) CN109516751B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110054465A (en) * 2019-06-11 2019-07-26 江苏工程职业技术学院 A kind of macromolecule base and preparation method thereof being exclusively used in ground heating floor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006001794A (en) * 2004-06-17 2006-01-05 Konoshima Chemical Co Ltd Moisture absorbing/releasing building material and method for producing the same
CN106495556A (en) * 2016-11-01 2017-03-15 南宁马瑞娜装饰工程有限公司 A kind of modified clayey lake mud building materials and preparation method
CN106747162A (en) * 2017-02-20 2017-05-31 中国矿业大学(北京) A kind of diatom plate and its production technology with photo-catalysis function
CN107986690A (en) * 2017-11-27 2018-05-04 广西福美新材料有限公司 A kind of flexible decorative walling for removing formaldehyde and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006001794A (en) * 2004-06-17 2006-01-05 Konoshima Chemical Co Ltd Moisture absorbing/releasing building material and method for producing the same
CN106495556A (en) * 2016-11-01 2017-03-15 南宁马瑞娜装饰工程有限公司 A kind of modified clayey lake mud building materials and preparation method
CN106747162A (en) * 2017-02-20 2017-05-31 中国矿业大学(北京) A kind of diatom plate and its production technology with photo-catalysis function
CN107986690A (en) * 2017-11-27 2018-05-04 广西福美新材料有限公司 A kind of flexible decorative walling for removing formaldehyde and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
纳米二氧化钛/壳聚糖复合材料;王香爱;《化工科技》;20121025;前言、2.2节 *

Also Published As

Publication number Publication date
CN109516751A (en) 2019-03-26

Similar Documents

Publication Publication Date Title
CN104895206B (en) A kind of composite evacuated heat insulating board and long-acting breathing mud thereof
CN101104766B (en) Colorful coating for purifying indoor air and producing method thereof
CN105399395A (en) Gypsum board with air purification function and preparation method thereof
CN104912212B (en) A kind of long-acting breathing mud
CN105294040A (en) Paper-based gypsum board and preparation method thereof
CN105272097A (en) Novel magnesian cementing material and preparation method for magnesian cementing plate prepared from novel magnesian cementing material
CN105399394A (en) High-strength environment-friendly gypsum board and preparation method thereof
CN106747162B (en) A kind of diatom plate and its production technology with photo-catalysis function
CN102515727A (en) Making method of diatomite for interior decoration and product
CN109776055B (en) Multifunctional environment-friendly zeolite diatom ooze interior wall coating
CN103351688A (en) Preparation method of interior wall putty capable of eliminating formaldehyde
CN105541396A (en) Photocatalyst diatom-mud lightweight high-strength plate
CN110482978A (en) A kind of diatom base calcium silicate board and preparation method thereof
CN105298009B (en) A kind of vermiculite calcium silicates composite plate of releasable negative oxygen ion and preparation method thereof
CN109516751B (en) Silicon fiber board with formaldehyde decomposition function and preparation method thereof
CN111844344A (en) Anion bamboo-wood fiber glued formaldehyde-free flame-retardant plate and preparation method thereof
CN107572951B (en) High-density calcium silicate board and preparation method thereof
CN105776978A (en) Method for manufacturing photocatalyst diatom ooze light high-strength plate
CN105036799A (en) Eco-friendly attapulgite-base inner wall brick and production method thereof
CN107746211A (en) A kind of decorations sheet material and preparation method thereof
CN201074383Y (en) Activated carbon environment protection middle-high-density fiber board
CN107382250A (en) A kind of plasterboard for inducing anion and preparation method thereof
CN112408854A (en) Diatom composite fiber board and preparation method thereof
CN103372906A (en) Method for producing decorative floors by using ardealite
CN107056256B (en) Method for preparing porous ceramic from artificial stone waste

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
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20200108

Address after: 315191 room 314, podium building, No. 298, bachelor Road, Shounan street, Yinzhou District, Ningbo City, Zhejiang Province

Applicant after: Ningbo Qunshu Housing Technology Co., Ltd

Address before: 200120 Shanghai, Nanhui, new towns around the Lake Road West, No. two, building C,

Applicant before: Shanghai Zhujia Architectural Technology Co., Ltd.

TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20200424

Address after: 610000 Building 1, Huadu, left bank, Xinyi, No. 6, Section 1, Huafu Avenue, Huayang street, Tianfu New District, Chengdu, Sichuan Province

Applicant after: Chengdu Science and Technology Co., Ltd

Address before: 315191 room 314, podium building, No. 298, bachelor Road, Shounan street, Yinzhou District, Ningbo City, Zhejiang Province

Applicant before: Ningbo Qunshu Housing Technology Co., Ltd

GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: No.44 and No.42, building 2, Fuxing Tianchi mansion, 132 Jiancai Road, Tianchi Avenue, Tianchi town, Lezhi county, Ziyang City, Sichuan Province, 641500

Patentee after: Zhongke Zhuchuang (Sichuan) Technology Co.,Ltd.

Address before: Building 1, Huadu, Xinyi left bank, no.6, Section 1, Huafu Avenue, Huayang street, Tianfu New District, Chengdu, Sichuan 610000

Patentee before: Chengdu Science and Technology Co.,Ltd.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20210813

Address after: 641500 stores 48 and 46, building 2, Fuxing Tianchi mansion, No. 132, Jiancai Road, Tianchi Avenue, Tianchi town, Lezhi county, Ziyang City, Sichuan Province

Patentee after: Sichuan Fuxing Hangxiao Construction Co.,Ltd.

Address before: No.44 and No.42, building 2, Fuxing Tianchi mansion, 132 Jiancai Road, Tianchi Avenue, Tianchi town, Lezhi county, Ziyang City, Sichuan Province, 641500

Patentee before: Zhongke Zhuchuang (Sichuan) Technology Co.,Ltd.