CN114933449B - Flame-retardant house box bottom plate and preparation method thereof - Google Patents
Flame-retardant house box bottom plate and preparation method thereof Download PDFInfo
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- CN114933449B CN114933449B CN202210690959.7A CN202210690959A CN114933449B CN 114933449 B CN114933449 B CN 114933449B CN 202210690959 A CN202210690959 A CN 202210690959A CN 114933449 B CN114933449 B CN 114933449B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/44—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose
- E04C2/50—Self-supporting slabs specially adapted for making floors ceilings, or roofs, e.g. able to be loaded
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
- E04H1/12—Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
- E04H1/12—Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
- E04H2001/1283—Small buildings of the ISO containers type
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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
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- Chemical Kinetics & Catalysis (AREA)
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- Curing Cements, Concrete, And Artificial Stone (AREA)
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Abstract
The invention relates to the technical field of materials, in particular to a flame-retardant house box bottom plate and a preparation method thereof; the house box bottom plate comprises the following raw materials in parts by weight: 35-50 parts of cement powder, 10-15 parts of rock powder, 2-10 parts of reinforcing agent, 1-6 parts of flame retardant, 1-4 parts of binder, 1.5-5 parts of epoxy resin and 1-7 parts of dispersant; the reinforcing agent is obtained by using halloysite, sepiolite, bis- (gamma-triethoxysilylpropyl) tetrasulfide and basalt fibers to act. The bottom plate has the effects of flame retardance, fire resistance, moisture resistance and high strength.
Description
Technical Field
The invention relates to the technical field of materials, in particular to a flame-retardant house box bottom plate and a preparation method thereof.
Background
The house box is a brand-new building system, and not only has the advantages of air purification, heating and cooling, and living and entertainment facilities, but also has low manufacturing cost. Previously, such house boxes were mainly used for site workers, but have slowly become a private purchase trend and have gradually become fashionable. The house box bottom plate is used as a floor in the house box, is made of non-combustible materials, has good flame retardant property, and can well reduce and prolong the spreading speed of fire because the house box bottom plate is made of non-combustible materials, thereby ensuring the safety to a certain extent. The house box bottom plates are generally used in the open air environment, have high requirements on waterproof and moistureproof performances, for example, rainy weather in south is more, and severe cold in north can prevent swelling and deformation even if being soaked in water for a long time, so that the house box bottom plates are generally widely applied to indoor and bathroom floors or used for large-scale building partition plates. It also has the advantages of sound insulation, noise reduction, cold insulation, heat insulation, good compression resistance and the like. And it is nontoxic and tasteless, and is a green energy-saving environment-friendly building decoration material.
The common floor materials of the house bottom used up to now can be divided into the following types: the tropical hardwood is used as the material, has few surface defects and compact texture due to the excellent appearance and eye-nourishing color, and thus becomes the material of the house bottom plate. The mixed wood board is used as a material, and the wood and the traditional hardwood mixed plywood are used. The bamboo floor is taken as a material, the wood forming period of the bamboo floor is short, and the existing bamboo floor is divided into two types, one type is a full bamboo type, and the other type is a bamboo and wood mixed type.
The existing house box bottom plate is difficult to obtain a high-strength effect while considering flame retardance, fire resistance, moisture resistance and moisture resistance. Based on the technical problems, the invention provides a house box bottom plate and a preparation method thereof.
Disclosure of Invention
In order to realize the flame-retardant, fireproof, moisture-proof and moisture-proof house box bottom plate and the high-strength house box bottom plate, the invention provides the house box bottom plate and the preparation method thereof.
In one aspect, the present invention provides a floor for a housing. The house box bottom plate comprises the following raw materials in parts by weight: 35-50 parts of cement powder, 10-15 parts of rock powder, 2-10 parts of reinforcing agent, 1-6 parts of flame retardant, 1-4 parts of binder, 1.5-5 parts of epoxy resin and 1-7 parts of dispersant.
Preferably, the rock powder is at least one of granite powder, quartz powder, shale powder, sandstone powder, limestone powder, slate powder, conglomerate powder and andesite powder. The amount of the rock powder may be preferably 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15 parts by mass or any two of the above ranges.
Preferably, the reinforcing agent is obtained by using halloysite, sepiolite and bis- (gamma-triethoxysilylpropyl) tetrasulfide to react with basalt fibers. The amount of the reinforcing agent to be used may be preferably 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10 parts by mass or any two of the above ranges.
Preferably, the flame retardant is at least one of zinc sulfide, zinc stannate, calcium molybdate, ammonium octamolybdate, ammonium metaborate and ammonium pentaborate. The amount of the flame retardant may be preferably 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6 parts by mass or any two of the above ranges.
Preferably, the binder is selected from polyurethane-based binders, such as commercial Lord74339 (Beijing Reid science and technology Co., ltd.), and Cika glue sikaflex-221 (Chongqing Kay chemical Co., ltd.). The binder amount may preferably be in the range of 1, 1.5, 2, 2.5, 3, 3.5, 4 parts by mass and any two of the above.
Preferably, the epoxy resin may be selected from conventional epoxy resins such as bisphenol a type epoxy resin, bisphenol F type epoxy resin, and the like. For example, it may be selected from commercially available epoxy resins: the phoenix brand epoxy resin WSR618 (E-1) (Nantong star synthetic materials Co., ltd.), the petrochemical epoxy resin glue E-44 (Yunnan New chemical industry Co., ltd.), and the TDE-85 epoxy resin (Wuhan Ji industry promotion chemical industry Co., ltd.). The amount of the epoxy resin may be preferably 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5 parts by mass and any two of the above ranges.
Preferably, the dispersant is at least one of sodium polyacrylate, polyvinyl amide and polyvinyl alcohol. The dispersant may be preferably used in an amount ranging from 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7 parts by mass and any two of the above.
Preferably, the preparation method of the reinforcing agent comprises the following steps: (1) Mixing bis- (gamma-triethoxysilylpropyl) tetrasulfide with an ethanol aqueous solution to obtain a premix A; (2) Respectively crushing halloysite and sepiolite, sieving and mixing to obtain mixed powder, and adding an ethanol aqueous solution to obtain a premix B; (3) mixing the premix A and the premix B to obtain a premix C; (4) Pretreating basalt fibers by using acid, and then mixing with the premix C; and (5) drying to obtain the reinforcing agent.
Preferably, in the step (1), the bis- (gamma-triethoxysilylpropyl) tetrasulfide preferably has a mass fraction of 0.5 to 5, more preferably 0.8 to 4.5, 1 to 4.5, 1.5 to 4, 2 to 3.5, 2.5 to 3 and the like.
Preferably, in the step (1), the part by mass of the ethanol aqueous solution is preferably 50 to 100, more preferably 55 to 95, 55 to 100, 60 to 90, 65 to 85, 65 to 90, 70 to 85, 70 to 90, 80 to 90, and the like.
Preferably, the concentration of the ethanol aqueous solution in the step (1) is 45-95% by mass, more preferably 50-90%, 55-89%, 55-90%, 60-90%, 65-85%, 60-80%, 60-70% by mass, and the like.
Preferably, the mixing condition in the step (1) is that the mixture is stirred for 0.2 to 10 hours at the temperature of between 20 and 90 ℃ and the rotating speed of between 100 and 5000 r/min. Wherein the temperature is preferably 20-85 deg.C, 25-80 deg.C, 25-75 deg.C, 30-80 deg.C, 35-80 deg.C, 40-80 deg.C, 45-75 deg.C, 50-70 deg.C, 55-65 deg.C, etc. The rotation speed is preferably 200-4500 rpm, 500-4000 rpm, 500-3000 rpm, 500-2000 rpm, etc. The time is preferably 0.5-9h, 1-8h, 2-7h, 3-6h, 2-5h, 0.5-4h, 0.5-3h, 0.5-2h and the like.
Preferably, in the step (1), 0.5 to 5 parts by mass of bis- (gamma-triethoxysilylpropyl) tetrasulfide and 50 to 100 parts by mass of 45 to 95 percent aqueous ethanol solution are stirred for 0.2 to 10 hours at the temperature of 20 to 90 ℃ and the rotating speed of 100 to 5000 r/min to obtain 2 premixes A.
Preferably, the particle size obtained by sieving the halloysite and the sepiolite in the step (2) is preferably 1 to 100 micrometers, more preferably 5 to 95, 10 to 80, 10 to 70, 10 to 60, 10 to 50, 10 to 40, 5 to 35, 5 to 25 micrometers, and the like.
Preferably, the mass ratio of the halloysite to the sepiolite powder is (0.3-3): 1, preferably (0.4-2.5): 1, (0.5-2): 1, (0.6-1.5): 1, (0.8-1.2): 1, etc.
Preferably, in the step (2), 50 to 120 parts by mass of the mixed powder is added into 300 to 1000 parts by mass of 30 to 95 percent ethanol aqueous solution and stirred for 0.5 to 10 hours at the temperature of 20 to 80 ℃ and the rotating speed of 100 to 5000 r/min.
Preferably, in the step (2), halloysite and sepiolite are respectively crushed and sieved, powder with the particle size range of 1 micron to 100 microns is selected to be mixed to obtain mixed powder, 50 to 120 parts by mass of the mixed powder is added into 300 to 1000 parts by mass of ethanol water solution with the mass percentage concentration of 30 to 95 percent, and the mixture is stirred for 0.5 to 10 hours at the temperature of 20 to 80 ℃ and the rotating speed of 100 to 5000 r/min to obtain the premix B.
Preferably, the step (3) is to stir the premixes a and B for 0.1-10h at the temperature of 15-85 ℃ and the rotation speed of 100-5000 r/min to obtain the premix C.
Preferably, in the step (4), the basalt fiber is treated by using an acid solution with the pH value of 0.1-2 for 0.1-5h, then the basalt fiber is taken out to obtain the basalt fiber after acid treatment, the premix C is added to be soaked for 0.5-8h, the mass ratio of the basalt fiber after acid treatment to the premix C is 0.1-30%, and then the basalt fiber is taken out to be dried for 0.3-5h to obtain the reinforcing agent intermediate product.
Preferably, the step (5) is to dry the reinforcing agent intermediate product of the step (4) at 50-90 ℃ for 0.5-10h to obtain the reinforcing agent.
In another aspect, the invention provides a method for preparing the house box bottom plate, which comprises the following steps:
(1) Stirring and mixing cement powder, rock powder, a reinforcing agent, a flame retardant and a dispersing agent to obtain an intermediate material 1;
(2) Stirring the intermediate material 1 obtained in the step (1) with a binder and epoxy resin to obtain an intermediate material 2;
(3) And (3) stirring the intermediate material 2 in the step (2) with water, and pouring the mixture into a mould for pressure forming.
Preferably, the stirring speed of the step (1) is 100-5000 r/min, and the stirring time is 0.5-5h.
Preferably, the stirring speed of the step (2) is 100-5000 r/min, and the stirring time is 0.5-5h.
Preferably, in the step (3), the mass ratio of the intermediate material 2 to the water is 1: (0.2-6).
Preferably, the stirring speed of the step (3) is 100-5000 r/min, and the stirring time is 0.5-5h.
Preferably, the intermediate material 2 in the step (3) is heated to 35-80 ℃, preferably 40-80 ℃, 45-75 ℃, 50-70 ℃ and the like while being stirred with water.
In another aspect, the invention provides the use of said room box bottom panel in the field of room boxes.
Has the advantages that:
the base plate obtained by combining 35-50 parts of cement powder, 10-15 parts of rock powder, 2-10 parts of reinforcing agent, 1-6 parts of flame retardant, 1-4 parts of binder, 1.5-5 parts of epoxy resin and dispersing agent has good mechanical property and good flame retardant effect. Wherein, the level of horizontal combustion flame retardance can reach A-0, the tensile strength, the impact strength and the elongation can reach 21.9MPa and 32.4KJ/m 2 And 9.3%.
The flame retardant is controlled to be 1-6 parts in the bottom plate system, so that the flame retardant has a good flame retardant effect.
The polyurethane adhesive and the epoxy resin are used in the system, so that the system has better mechanical property. The adhesive and the epoxy resin of the invention have synergistic effect on increasing the mechanical property, mechanical property and strength of the product and elongation at break, and have unexpected increasing effect.
The invention controls the ratio of halloysite to sepiolite to be (0.3-3): 1, the invention has better strength and elongation. The halloysite and the sepiolite have a synergistic effect, and the mechanical property of the product is improved together, and the main reason is that the complementary effect of the microstructures of the halloysite and the sepiolite changes the surface structure of the basalt fiber, so that the basalt fiber can better enhance the mechanical property effect in the system. In addition, the mixed powder is controlled to be 50-120 parts by mass, so that the product has better effects on strength and elongation at break.
The invention uses 0.5-5 parts by mass of bis- (gamma-triethoxysilylpropyl) tetrasulfide to ensure that the tensile strength, the impact strength and the elongation of the soleplate can reach 21.9MPa, 32.4KJ/m < 2 > and 9.3 percent.
The reinforcing agent is obtained by using halloysite and sepiolite and matching with bis- (gamma-triethoxysilylpropyl) tetrasulfide to treat basalt fibers, and is favorable for improving the compatibility and the associativity of the system, so that the strength and the elongation at break of the bottom plate are improved to a great extent.
Detailed Description
The present invention will be specifically explained below in conjunction with specific embodiments and examples, and the advantages and various effects of the present invention will be more clearly presented thereby. It will be understood by those skilled in the art that these specific embodiments and examples are for the purpose of illustrating the invention and are not to be construed as limiting the invention.
Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there is a conflict, the present specification will control.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
Example 1:
the house box bottom plate comprises the following raw materials in parts by weight: 45 parts of cement powder, 12 parts of granite powder, 8 parts of a reinforcing agent, 5 parts of a toughening agent zinc stannate, 3.5 parts of a binder, 2.5 parts of epoxy resin and 6 parts of a dispersing agent sodium polyacrylate; the binder is Lord74339 (Beijing Retinoid science and technology Co., ltd.); the epoxy resin is a phoenix brand epoxy resin WSR618 (E-1);
the preparation method of the reinforcing agent comprises the following steps: (1) Stirring 2 parts by mass of bis- (gamma-triethoxysilylpropyl) tetrasulfide and 80 parts by mass of 75% ethanol aqueous solution at the temperature of 45 ℃ and the rotating speed of 1000 rpm for 2 hours to obtain a premix A;
(2) Respectively crushing halloysite and sepiolite, sieving, selecting powder with the particle size range of 5-45 micrometers, mixing to obtain mixed powder, adding 80 parts by mass of the mixed powder into 600 parts by mass of 75% ethanol aqueous solution, and stirring for 2 hours at the temperature of 25 ℃ and the rotating speed of 1000 revolutions per minute to obtain a premix B; wherein the mass ratio of the halloysite to the sepiolite in the mixed powder is 1;
(3) Stirring the mixture A and the mixture B for 1 hour at the temperature of 25 ℃ and the rotating speed of 100-5000 r/min to obtain a premix C;
(4) Soaking basalt fibers for 2 hours by using an acid solution with the pH value of 0.2, then taking out the basalt fibers to obtain acid-treated basalt fibers, adding a premix C to soak for 1 hour, taking out the acid-treated basalt fibers to be dried for 2.5 hours to obtain an intermediate product of the reinforcing agent, wherein the mass ratio of the acid-treated basalt fibers to the premix C is 10%;
(5) Drying the reinforcing agent intermediate product obtained in the step (4) at 60 ℃ for 8h to obtain a reinforcing agent;
the preparation method of the house box bottom plate comprises the following steps:
(1) Stirring and mixing cement powder, rock powder, a reinforcing agent, a flame retardant and a dispersing agent to obtain an intermediate material 1;
(2) Stirring the intermediate material 1 obtained in the step (1) with a binder and epoxy resin to obtain an intermediate material 2;
(3) And (3) stirring the intermediate material 2 in the step (2) with water, pouring the mixture into a mould, and pressing and forming.
The stirring speed of the step (1) is 1000 r/min, and the stirring time is 0.5h;
the stirring speed in the step (2) is 1000 rpm, and the stirring time is 0.5h;
in the step (3), the mass ratio of the intermediate material 2 to water is 1:0.9; the stirring speed in the step (3) is 2000 rpm, and the stirring time is 2.5 hours; and (4) heating the intermediate material 2 to 50 ℃ while stirring with water in the step (3).
Example 2: the house box bottom plate is only different from the house box bottom plate in the embodiment 1 in terms of the following raw materials in parts by weight: 35 parts of cement powder, 10 parts of sandstone powder, 5 parts of reinforcing agent, 1 part of flame retardant calcium molybdate, 4 parts of binder, 1.8 parts of epoxy resin and 5 parts of dispersant polyvinyl amide; the binder is Sikaflex-221 (Chongqing Kaiyin chemical Co., ltd.) of the adhesive; the epoxy resin is petrochemical epoxy resin adhesive E-44 (New chemical industry Co., ltd., yunnan); during preparation of the reinforcing agent: the using amount of the mixed powder is 100 parts, the mass ratio of the halloysite to the sepiolite in the mixed powder is 0.5; the rest of the procedure was the same as in example 1.
Example 3: the house box bottom plate is different from the house box bottom plate in the embodiment 1 only in that the house box bottom plate comprises the following raw materials in parts by weight: 50 parts of cement powder, 15 parts of conglomerate stone powder, 9 parts of reinforcing agent, 5 parts of flame retardant ammonium metaborate, 2 parts of binder, 4 parts of epoxy resin and 7 parts of dispersant polyvinyl alcohol; the binder is Sikaflex-221 (Chongqing Kaiyin chemical Co., ltd.) of the adhesive; the epoxy resin is petrochemical epoxy resin adhesive E-44 (New chemical industry Co., ltd., yunnan); the preparation of the reinforcing agent comprises the following steps: the using amount of the mixed powder is 60 parts, the mass ratio of the halloysite to the sepiolite in the mixed powder is 1; the rest of the procedure was the same as in example 1.
Comparative example 1: the difference with the embodiment 1 is that the amount of the fire retardant is 7 parts in the raw materials of the house bottom plate; the rest of the procedure was the same as in example 1. (ii) a
Comparative example 2: compared with the embodiment 1, the difference is that the usage amount of the adhesive in the raw materials of the house box bottom plate is 0.5 part, and the usage amount of the epoxy resin is 5.5 parts; the rest was the same as in example 1.
Comparative example 3: the difference from the embodiment 1 is that the dosage of the adhesive is 5.5 parts, and the dosage of the epoxy resin is 0.5 part; the rest of the procedure was the same as in example 1.
Comparative example 4: the difference with the embodiment 1 is that the amount of the epoxy resin in the raw material of the house bottom plate is 6 parts; the rest of the procedure was the same as in example 1.
Comparative example 5: the only difference from example 1 is that when the reinforcing agent is prepared, the mass ratio of the halloysite to the sepiolite in the mixed powder in the step (2) is 0.1; the rest was the same as in example 1.
Comparative example 6: the only difference from example 1 is that when the reinforcing agent is prepared, the mass ratio of the halloysite to the sepiolite in the mixed powder in the step (2) is 0.1; the rest of the procedure was the same as in example 1.
Comparative example 7: the only difference from example 1 is that no mixed powder of halloysite and sepiolite was used in the preparation of the reinforcing agent; the rest of the procedure was the same as in example 1.
Comparative example 8: the only difference from example 1 is that the amount of the mixed powder of halloysite and sepiolite was 200 parts when the reinforcing agent was prepared; the rest of the procedure was the same as in example 1.
Comparative example 9: the only difference from example 1 is that bis- (gamma-triethoxysilylpropyl) tetrasulfide is not used in the preparation of the reinforcing agent; the rest of the procedure was the same as in example 1.
Comparative example 10: the only difference from example 1 is that bis- (gamma-triethoxysilylpropyl) tetrasulfide is used in an amount of 10 parts in the preparation of the reinforcing agent; the rest of the procedure was the same as in example 1.
The above examples and comparative examples were subjected to a performance test to test the mechanical properties and flame retardancy of the products. The test method is detailed in GB 8410-2006.
According to detection data of the embodiment, the bottom plate obtained by combining the cement powder, the rock powder, the reinforcing agent by 2-10 parts, the flame retardant by 1-6 parts, the binder by 1-4 parts, the epoxy resin by 1.5-5 parts and the dispersing agent has good mechanical property and good flame retardant effect. Wherein, the level of horizontal combustion flame retardance can reach A-0, the tensile strength, the impact strength and the elongation can reach 21.9MPa and 32.4KJ/m 2 And 9.3%.
As can be seen from the comparison between the examples and the comparative example 1, the flame retardant controlled in the floor system of the present invention has a good flame retardant effect at 1 to 6 parts.
The polyurethane adhesive and the epoxy resin are used in the system, so that the system has better mechanical property. As is clear from comparison between comparative example 4 and example 1, the strength and elongation at break of the product obtained by omitting the binder polyurethane according to the present invention are in a lower tendency. As can be seen from comparison of comparative examples 2 to 3 and example 1, even though the polyurethane binder and the epoxy resin are used together, if the amount of the polyurethane binder and the amount of the epoxy resin are not in the range of 1 to 4 parts of the binder and the amount of the epoxy resin is in the range of 1.5 to 5 parts of the epoxy resin, the mechanical strength and the elongation at break of the obtained product are decreased, and the product tends to increase in a negative direction. As can be seen from the comparison between example 1 and comparative examples 2 to 4, the binder of the present invention and the epoxy resin exhibit a synergistic effect in increasing the mechanical properties, mechanical strength and elongation at break of the product, with an unexpected increase.
The invention controls the proportion of halloysite and sepiolite to be (0.3-3): 1, the invention has better strength and elongation. As can be seen from the comparison between the embodiment 1 and the comparative examples 5 to 6, the proportion of the halloysite and the sepiolite is controlled to be moderate, so that the reinforcing agent plays a better role in the invention, and the product of the invention has better mechanical property in the proportion range. In addition, as can be seen from comparison of example 1 of the present invention with comparative examples 7 to 8, the present invention controls the mixed powder in an amount of 50 to 120 parts by mass so that the product of the present invention has better effects on strength and elongation at break.
The invention obtains unexpected effect on mechanical property by using 0.5-5 parts by mass of bis- (gamma-triethoxysilylpropyl) tetrasulfide. As is apparent from example 1 and comparative examples 9 to 10, the use of 0.5 to 5 parts by mass of bis- (gamma-triethoxysilylpropyl) tetrasulfide according to the present invention makes it possible to achieve 21.9MPa, 32.4KJ/m2 and 9.3% in tensile strength, impact strength and elongation of the substrate according to the present invention.
According to the invention, halloysite and sepiolite are used, and the reinforcing agent is obtained by treating basalt fibers with bis- (gamma-triethoxysilylpropyl) tetrasulfide, so that the compatibility and the associativity of resin are improved, and the strength and the elongation at break of the bottom plate are improved to a great extent.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. The house box bottom plate is characterized by comprising the following raw materials in parts by weight: 35-50 parts of cement powder, 10-15 parts of rock powder, 2-10 parts of reinforcing agent, 1-6 parts of flame retardant, 1-4 parts of binder, 1.5-5 parts of epoxy resin and 1-7 parts of dispersant;
the binder is selected from polyurethane binders; the epoxy resin is selected from at least one of bisphenol A type epoxy resin and bisphenol F type epoxy resin;
the reinforcing agent is obtained by using halloysite, sepiolite and bis- (gamma-triethoxysilylpropyl) tetrasulfide to react with basalt fibers; the preparation method of the reinforcing agent comprises the following steps:
(1) Stirring 0.5-5 parts by mass of bis- (gamma-triethoxysilylpropyl) tetrasulfide and 50-100 parts by mass of ethanol aqueous solution with the mass percentage concentration of 45-95% for 0.2-10h under the conditions that the temperature is 20-90 ℃ and the rotating speed is 100-5000 r/min to obtain a premix A;
(2) Respectively crushing halloysite and sepiolite, sieving, selecting powder with the particle size range of 1-100 micrometers, mixing to obtain mixed powder, adding 50-120 parts by mass of the mixed powder into 300-1000 parts by mass of ethanol water solution with the mass percentage concentration of 30-95%, and stirring for 0.5-10 hours at the temperature of 20-80 ℃ and the rotating speed of 100-5000 r/min to obtain a premix B;
(3) Stirring the mixture A and the mixture B for 0.1 to 10 hours at the temperature of between 15 and 85 ℃ and the rotating speed of between 100 and 5000 r/min to obtain a premix C;
(4) Treating basalt fibers for 0.1-5h by using an acid solution with the pH value of 0.1-2, then taking out the basalt fibers to obtain acid-treated basalt fibers, adding the premix C, soaking for 0.5-8h, and taking out to obtain the acid-treated basalt fibers, wherein the mass ratio of the acid-treated basalt fibers to the premix C is 0.1-30%, and then taking out and airing for 0.3-5h to obtain an enhancer intermediate product;
(5) And (5) drying the reinforcing agent intermediate product obtained in the step (4) at 50-90 ℃ for 0.5-10h to obtain the reinforcing agent.
2. The house box bottom plate of claim 1, wherein: the rock powder is at least one of granite powder, quartz powder, shale powder, sandstone powder, limestone powder, slate powder, conglomerate powder and andesite powder.
3. The house box bottom plate of claim 1, wherein: the flame retardant is at least one of zinc sulfide, zinc stannate, calcium molybdate, ammonium octamolybdate, ammonium metaborate and ammonium pentaborate.
4. The house box bottom plate of claim 1, wherein: the dispersing agent is at least one of sodium polyacrylate, polyvinyl amide and polyvinyl alcohol; the binder is selected from polyurethane binders.
5. The method for preparing the house box bottom plate according to claim 1, characterized in that: the preparation method comprises the following steps:
(1) Stirring and mixing cement powder, rock powder, a reinforcing agent, a flame retardant and a dispersing agent to obtain an intermediate material 1;
(2) Stirring the intermediate material 1 obtained in the step (1), a binder and epoxy resin to obtain an intermediate material 2;
(3) And (3) stirring the intermediate material 2 in the step (2) with water, and pouring the mixture into a mould for pressure forming.
6. The method of claim 5, wherein: and (3) heating the intermediate material 2 in the step (3) to 35-80 ℃ while stirring with water.
7. Use of a house box bottom according to claim 1 in the field of house boxes.
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| CN202210690959.7A CN114933449B (en) | 2022-06-17 | 2022-06-17 | Flame-retardant house box bottom plate and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601438A (en) * | 2013-10-28 | 2014-02-26 | 合肥中铁百瑞得交通工程科技有限公司 | Epoxy polyurethane compounded cement based sound barrier panel and making method thereof |
| CN113173749A (en) * | 2021-04-23 | 2021-07-27 | 中国地质大学（北京） | Modified basalt fiber-containing cementing material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601438A (en) * | 2013-10-28 | 2014-02-26 | 合肥中铁百瑞得交通工程科技有限公司 | Epoxy polyurethane compounded cement based sound barrier panel and making method thereof |
| CN113173749A (en) * | 2021-04-23 | 2021-07-27 | 中国地质大学（北京） | Modified basalt fiber-containing cementing material and preparation method thereof |
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