CN111424937A - Construction method for laying indoor stone materials capable of preventing hollowing - Google Patents
Construction method for laying indoor stone materials capable of preventing hollowing Download PDFInfo
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- CN111424937A CN111424937A CN202010341794.3A CN202010341794A CN111424937A CN 111424937 A CN111424937 A CN 111424937A CN 202010341794 A CN202010341794 A CN 202010341794A CN 111424937 A CN111424937 A CN 111424937A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
- E04F21/18—Implements for finishing work on buildings for setting wall or ceiling slabs or plates
- E04F21/1838—Implements for finishing work on buildings for setting wall or ceiling slabs or plates for setting a plurality of similar elements
- E04F21/1844—Implements for finishing work on buildings for setting wall or ceiling slabs or plates for setting a plurality of similar elements by applying them one by one
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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- Architecture (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Civil Engineering (AREA)
- Road Paving Structures (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to the field of indoor construction, in particular to a construction method for laying and pasting anti-hollowing indoor stone, which comprises the following steps: 1) pretreatment: with stone material surface edulcoration, clearance back, will need to spread the ground clean up 2) bullet line of pasting the stone material simultaneously: arranging internal lines and external lines according to the dimension of the stone; 3) cement paving: paving special cement on the ground in the arranged inner line, and coating a layer of adhesive on the special cement; 4) stone material laying: attaching the stone to the adhesive, and filling the space between the inner line and the outer line with special cement; 5) and (3) post-treatment: knocking the stone by using a rubber hammer to compact the stone, and then pointing the cement which exceeds the upper surface of the stone after compaction; 6) and (3) drying: keeping the room cool and ventilated until completely dry. The invention can discharge air in the pressing process of the stone, and can effectively reduce or avoid the phenomena of hollowing or falling off.
Description
Technical Field
The invention relates to the field of indoor construction, in particular to a construction method for laying and pasting anti-hollowing indoor stone.
Background
The stone background wall is indispensable wall decoration in home decoration design, is beautiful and atmospheric, has the functions of sound absorption, sound insulation, wave absorption and the like, and has a plurality of places which can be decorated, such as a sofa background wall, a television background wall and the like.
The high-grade material of the stone background wall is generally selected from stone, particularly the television stone background wall, has become a focus in household design, is one of the key points of large-sized living rooms, occupies a very important position in decoration, attracts the eyes of people, and is a special space for showing the taste and individuation of a master.
But because the weight of stone material itself just sinks very much to require very big to joint strength, and pile up the bubble easily when being under construction to the stone material wall at present to and the phenomenon that concrete mortar carried the incompact and produce the hollowing, lead to whole joint effect greatly reduced to the stone material.
Disclosure of Invention
Aiming at the problems, the invention provides a construction method for laying and pasting indoor stone materials, which comprises the following steps:
1) pretreatment: after the surface of the stone is subjected to impurity removal and cleaning, cleaning the ground to be paved with the stone, and ensuring the smoothness of a paved base layer;
2) line snapping: the measurement needs the area size of paving the stone material, calculates the stone material volume of needs, and carries out the arrangement of interior line and external line according to the size of a dimension of stone material, and for keeping pleasing to the eye, the interval between interior line and the external line is the same.
3) Cement paving: paving special cement on the ground in the arranged inner line, and coating a layer of adhesive on the special cement;
4) stone material laying: attaching the stone to the adhesive, and filling the space between the inner line and the outer line with special cement;
5) and (3) post-treatment: knocking the stone by using a rubber hammer to compact the stone, and then pointing the cement which exceeds the upper surface of the stone after compaction;
6) and (3) drying: keeping the room cool and ventilated until completely dry.
Preferably, the paving thickness of the special cement is 3-5 cm, and the thickness of the adhesive is 0.5-2 cm; the interval between the inner line and the outer line is 3-5 cm.
Preferably, the adhesive comprises the following components in parts by weight:
30-120 parts of modified epoxy resin, 0.5-8 parts of nitrile rubber, 8-25 parts of reactive diluent, 1-18 parts of selective solvent, 0.5-10 parts of modified graphene oxide, 0.5-3 parts of plasticizer and 20-60 parts of curing agent.
Preferably, the reactive diluent is one or more of β -hydroxyethyl methacrylate, 1, 6-hexanediol diacrylate, glycidyl neodecanoate, trimethylolpropane triglycidyl ether and castor oil polyglycidyl ether.
Preferably, the selective solvent is one or more of benzyl alcohol, acetone, xylene, glycidyl ether, 1, 2-cyclohexanediol diglycidyl ether.
Preferably, the curing agent is one or more of aliphatic amine, alicyclic amine, aromatic amine and polyamide.
Preferably, the preparation process of the modified graphene oxide is as follows:
s1, preparing graphene oxide:
adding graphite powder and sodium nitrate into a container, fixing in an ice-water bath, slowly pouring 98% concentrated sulfuric acid into the container, stirring uniformly, adding potassium permanganate powder, stirring in the ice-water bath for reaction for 1-2 hours, heating to 40-50 ℃, continuing to stir for reaction for 0.5-1 hour, dropwise adding deionized water, gradually heating the liquid in the container, stirring for 0.2-0.5 hour after dropwise adding, adding 20-40% hydrogen peroxide until no bubbles are generated, centrifuging to obtain a solid, washing to be neutral by using deionized water, freeze-drying, and grinding into powder to obtain graphene oxide;
wherein the mass ratio of the graphite powder to the sodium nitrate to the concentrated sulfuric acid is 1: 0.5-2: 3-8; the mass ratio of the potassium permanganate powder to the graphite powder is 1: 5-10; the mass ratio of the dropping amount of the deionized water to the concentrated sulfuric acid is 1: 0.5-2; the mass ratio of the hydrogen peroxide to the concentrated sulfuric acid is 1: 0.1-0.5;
s2, preparing modified graphene oxide:
adding pilocarpine hydrochloride into deionized water, and stirring until the pilocarpine hydrochloride is completely hydrolyzed to obtain a pilocarpine hydrochloride solution; weighing graphene oxide, adding the graphene oxide into deionized water, and uniformly dispersing to obtain a graphene oxide solution; adding the pilocarpine hydrochloride solution into the graphene oxide solution, stirring for 0.5-1 h, performing ultrasonic treatment for 1-2 h, pouring into a reaction kettle with a polytetrafluoroethylene lining, heating to 80-120 ℃, reacting for 5-10 h, cooling to room temperature, filtering to obtain a solid, performing freeze drying, and grinding into powder to obtain modified graphene oxide;
wherein the solid-to-liquid ratio of the pilocarpine hydrochloride to the deionized water is 1: 10-30; the solid-liquid ratio of the graphene oxide to the deionized water is 1: 20-50; the volume ratio of the pilocarpine hydrochloride solution to the graphene oxide solution is 1: 2-8.
Preferably, the preparation method of the modified epoxy resin comprises the following steps:
(1) adding 0.5g of polymethylphenylsiloxane into n-butanol, uniformly mixing, sequentially adding 2-mercaptopropionic acid and 2, 2-dimethoxy-acetophenone, placing the mixture in an ice water bath, stirring and reacting for 0.5-1 h, transferring the mixture to an ultraviolet lamp for radiation reaction for 1-2 h, filtering to obtain a solid, washing the solid with acetone for 0.2-0.5 h, drying the solid in a cool and ventilated place at room temperature, and crushing the solid by a nano crusher to obtain a modifier;
wherein the mass ratio of the polymethylphenylsiloxane, the 2-mercaptopropionic acid, the 2, 2-dimethoxy-acetophenone to the n-butanol is 2-3: 4-8: 0.1-0.5: 100;
(2) adding the modifier into epoxy resin, and stirring for 0.5-2 h at 100-160 ℃ to obtain modified epoxy resin; wherein the mass ratio of the modifier to the epoxy resin is 1: 10-20.
Preferably, the radiation wavelength of the ultraviolet lamp is 320-400 nm, and the power of the ultraviolet lamp is 50-150W.
Preferably, when the adhesive is used, the modified epoxy resin, the nitrile rubber, the reactive diluent, the selective solvent, the modified graphene oxide and the plasticizer are stirred uniformly, and then the curing agent is added.
Preferably, the special cement consists of the following components in parts by weight:
90-110 parts of Portland cement, 210-230 parts of carborundum, 12-15 parts of water, 5-7 parts of micro silicon powder, 12-18 parts of superfine powder, 0.6-1 part of water reducing agent, 1.2-2 parts of modified latex powder, 0.1-0.5 part of glass fiber, 1-5 parts of alumina and 10-15 parts of fly ash;
preferably, the preparation method of the modified redispersible latex powder comprises the following steps:
(1) adding monoalkoxy pyrophosphate titanate into deionized water, stirring uniformly, adding butyl benzyl phthalate, stirring uniformly, continuously adding sodium dodecyl sulfate, and stirring uniformly again to obtain a pretreatment solution;
wherein the mass ratio of the monoalkoxy pyrophosphate titanate to the deionized water is 1: 15-20; the mass ratio of butyl benzyl phthalate, sodium dodecyl sulfate to monoalkoxy pyrophosphate titanate is 1: 0.25-0.5: 10-12;
(2) weighing redispersible latex powder, adding the redispersible latex powder into the pretreatment solution, and stirring and reacting for 0.5-1 h to obtain a primary reaction solution;
wherein the solid-to-liquid ratio of the redispersible latex powder to the pretreatment liquid is 1: 15-30;
(3) weighing carbon nanotubes, adding the carbon nanotubes into the primary reaction solution, stirring the mixture uniformly, placing the mixture into a high-pressure reaction kettle for reaction for 2-5 hours, freeze-drying the mixture, and grinding the mixture into powder to obtain modified latex powder;
wherein the solid-to-liquid ratio of the carbon nano tube to the primary reaction liquid is 1: 50-120.
Preferably, when the modified redispersible latex powder is prepared, the pressure of the high-pressure reaction kettle is set to be 0.5-3 MPa.
The invention has the beneficial effects that:
1. the indoor stone paving method comprises the steps of cleaning the surface of the stone to remove impurities, flattening the surface of the stone, reducing air on the surface of the stone in the pressing process of an adhesive, adopting an inner line and an outer line combined mode for an elastic line, and enabling a gap to be reserved between the inner line and the outer line, further enabling the stone to discharge the air in the pressing process, effectively reducing or avoiding hollowing or falling off, enabling the gap and the upper surface of the stone to be positioned on the same horizontal plane through seam pointing of post-treatment, and using a rubber hammer to knock the stone firmly after the air is discharged, so as to fix the stone.
2. The adhesive used in the invention is composed of modified epoxy resin, nitrile rubber, a reactive diluent, a selective solvent, modified graphene oxide, a plasticizer and a curing agent. The modified epoxy resin is prepared by reacting polymethylphenylsiloxane, 2-mercaptopropionic acid and 2, 2-dimethoxy-acetophenone in a solvent of n-butyl alcohol, wherein the reaction is a mercapto-double bond reaction carried out at a low temperature, the ultraviolet radiation can accelerate the reaction progress, the modifier finally obtained by the low-temperature reaction has adjustable ultralow density, more pore size and stronger plasticity, the modified epoxy resin obtained by combining the modified epoxy resin with the epoxy resin overcomes the brittle property of the traditional epoxy resin, and the plasticity, the pressure resistance, the water resistance, the acid resistance and the alkali resistance of the modified epoxy resin are improved. The adhesive finally realizes the functions of faster curing, stronger adhesion and higher strength, and can effectively prevent the problems of hollowing and leakage.
3. According to the invention, the modified graphene oxide is added in the adhesive, and the aging resistance and the high temperature resistance of the adhesive can be improved by adding the modified graphene oxide. The modified graphene oxide is prepared by oxidizing and separating graphite powder by a certain method to obtain graphene oxide, modifying the graphene oxide by using pilocarpine hydrochloride, and finally grafting pilocarpine on the surface layer of the graphene oxide. Compared with common graphite and graphene, the graphene oxide prepared by the method has rich oxygen-containing groups on the surface, including epoxy, hydroxyl and the like, so that the graphene oxide has strong dispersibility in a solvent, but due to the generation of the oxygen-containing groups, the carbon atoms on the surface of the graphene oxide easily form single-cavity and multiple-cavity defects, so that the migration of the carbon atoms is caused, and the integral two-dimensional space crystal form is damaged.
4. The special cement used in the invention is composed of portland cement, carborundum, water, micro-silica powder, superfine powder, a water reducing agent part, modified latex powder, a glass fiber part, aluminum oxide and fly ash. The modified latex powder is modified by adopting monoalkoxy pyrophosphate titanate and butyl benzyl phthalate, so that the water resistance strength of the modified latex powder is greatly increased, and the cement and a substrate still have good bonding strength in a humid environment. The modified latex powder can replace the rubber powder widely used in cement slurry at present, and has the advantages of low addition amount, high bonding strength and good water resistance strength.
Detailed Description
The invention is further described with reference to the following examples.
Example 1
A construction method for laying and pasting indoor stone materials capable of preventing hollowing comprises the following steps:
1) pretreatment: after the surface of the stone is subjected to impurity removal and cleaning, cleaning the ground to be paved with the stone, and ensuring the smoothness of a paved base layer;
2) line snapping: the measurement needs the area size of paving the stone material, calculates the stone material volume of needs, and carries out the arrangement of interior line and external line according to the size of a dimension of stone material, and for keeping pleasing to the eye, the interval between interior line and the external line is the same.
3) Cement paving: paving special cement on the ground in the arranged inner line, and coating a layer of adhesive on the special cement;
4) stone material laying: attaching the stone to the adhesive, and filling the space between the inner line and the outer line with special cement;
5) and (3) post-treatment: knocking the stone by using a rubber hammer to compact the stone, and then pointing the cement which exceeds the upper surface of the stone after compaction;
6) and (3) drying: keeping the room cool and ventilated until completely dry.
Preferably, the paving thickness of the special cement is 3-5 cm, and the thickness of the adhesive is 0.5-2 cm; the interval between the inner line and the outer line is 3-5 cm.
Preferably, the adhesive comprises the following components in parts by weight:
80 parts of modified epoxy resin, 5 parts of nitrile rubber, 15 parts of reactive diluent, 12 parts of selective solvent, 6 parts of modified graphene oxide, 2 parts of plasticizer and 40 parts of curing agent.
Preferably, the reactive diluent is one or more of β -hydroxyethyl methacrylate, 1, 6-hexanediol diacrylate, glycidyl neodecanoate, trimethylolpropane triglycidyl ether and castor oil polyglycidyl ether.
Preferably, the selective solvent is one or more of benzyl alcohol, acetone, xylene, glycidyl ether, 1, 2-cyclohexanediol diglycidyl ether.
Preferably, the curing agent is one or more of aliphatic amine, alicyclic amine, aromatic amine and polyamide.
Preferably, the preparation process of the modified graphene oxide is as follows:
s1, preparing graphene oxide:
adding graphite powder and sodium nitrate into a container, fixing in an ice-water bath, slowly pouring 98% concentrated sulfuric acid into the container, stirring uniformly, adding potassium permanganate powder, stirring in the ice-water bath for reaction for 1-2 hours, heating to 40-50 ℃, continuing to stir for reaction for 0.5-1 hour, dropwise adding deionized water, gradually heating the liquid in the container, stirring for 0.2-0.5 hour after dropwise adding, adding 20-40% hydrogen peroxide until no bubbles are generated, centrifuging to obtain a solid, washing to be neutral by using deionized water, freeze-drying, and grinding into powder to obtain graphene oxide;
wherein the mass ratio of the graphite powder to the sodium nitrate to the concentrated sulfuric acid is 1: 0.5-2: 3-8; the mass ratio of the potassium permanganate powder to the graphite powder is 1: 5-10; the mass ratio of the dropping amount of the deionized water to the concentrated sulfuric acid is 1: 0.5-2; the mass ratio of the hydrogen peroxide to the concentrated sulfuric acid is 1: 0.1-0.5;
s2, preparing modified graphene oxide:
adding pilocarpine hydrochloride into deionized water, and stirring until the pilocarpine hydrochloride is completely hydrolyzed to obtain a pilocarpine hydrochloride solution; weighing graphene oxide, adding the graphene oxide into deionized water, and uniformly dispersing to obtain a graphene oxide solution; adding the pilocarpine hydrochloride solution into the graphene oxide solution, stirring for 0.5-1 h, performing ultrasonic treatment for 1-2 h, pouring into a reaction kettle with a polytetrafluoroethylene lining, heating to 80-120 ℃, reacting for 5-10 h, cooling to room temperature, filtering to obtain a solid, performing freeze drying, and grinding into powder to obtain modified graphene oxide;
wherein the solid-to-liquid ratio of the pilocarpine hydrochloride to the deionized water is 1: 10-30; the solid-liquid ratio of the graphene oxide to the deionized water is 1: 20-50; the volume ratio of the pilocarpine hydrochloride solution to the graphene oxide solution is 1: 2-8.
Preferably, the preparation method of the modified epoxy resin comprises the following steps:
(1) adding 0.5g of polymethylphenylsiloxane into n-butanol, uniformly mixing, sequentially adding 2-mercaptopropionic acid and 2, 2-dimethoxy-acetophenone, placing the mixture in an ice water bath, stirring and reacting for 0.5-1 h, transferring the mixture to an ultraviolet lamp for radiation reaction for 1-2 h, filtering to obtain a solid, washing the solid with acetone for 0.2-0.5 h, drying the solid in a cool and ventilated place at room temperature, and crushing the solid by a nano crusher to obtain a modifier;
wherein the mass ratio of the polymethylphenylsiloxane, the 2-mercaptopropionic acid, the 2, 2-dimethoxy-acetophenone to the n-butanol is 2-3: 4-8: 0.1-0.5: 100;
(2) adding the modifier into epoxy resin, and stirring for 0.5-2 h at 100-160 ℃ to obtain modified epoxy resin; wherein the mass ratio of the modifier to the epoxy resin is 1: 10-20.
Preferably, the radiation wavelength of the ultraviolet lamp is 320-400 nm, and the power of the ultraviolet lamp is 50-150W.
Preferably, when the adhesive is used, the modified epoxy resin, the nitrile rubber, the reactive diluent, the selective solvent, the modified graphene oxide and the plasticizer are stirred uniformly, and then the curing agent is added.
Preferably, the special cement consists of the following components in parts by weight:
100 parts of Portland cement, 220 parts of carborundum, 13 parts of water, 6 parts of silica fume, 15 parts of superfine powder, 0.8 part of water reducing agent, 1.8 parts of modified latex powder, 0.3 part of glass fiber, 3 parts of aluminum oxide and 12 parts of fly ash;
preferably, the preparation method of the modified redispersible latex powder comprises the following steps:
(1) adding monoalkoxy pyrophosphate titanate into deionized water, stirring uniformly, adding butyl benzyl phthalate, stirring uniformly, continuously adding sodium dodecyl sulfate, and stirring uniformly again to obtain a pretreatment solution;
wherein the mass ratio of the monoalkoxy pyrophosphate titanate to the deionized water is 1: 15-20; the mass ratio of butyl benzyl phthalate, sodium dodecyl sulfate to monoalkoxy pyrophosphate titanate is 1: 0.25-0.5: 10-12;
(2) weighing redispersible latex powder, adding the redispersible latex powder into the pretreatment solution, and stirring and reacting for 0.5-1 h to obtain a primary reaction solution;
wherein the solid-to-liquid ratio of the redispersible latex powder to the pretreatment liquid is 1: 15-30;
(3) weighing carbon nanotubes, adding the carbon nanotubes into the primary reaction solution, stirring the mixture uniformly, placing the mixture into a high-pressure reaction kettle for reaction for 2-5 hours, freeze-drying the mixture, and grinding the mixture into powder to obtain modified latex powder;
wherein the solid-to-liquid ratio of the carbon nano tube to the primary reaction liquid is 1: 50-120.
Preferably, when the modified redispersible latex powder is prepared, the pressure of the high-pressure reaction kettle is set to be 0.5-3 MPa.
Example 2
A construction method for laying and pasting indoor stone materials capable of preventing hollowing comprises the following steps:
1) pretreatment: after the surface of the stone is subjected to impurity removal and cleaning, cleaning the ground to be paved with the stone, and ensuring the smoothness of a paved base layer;
2) line snapping: the measurement needs the area size of paving the stone material, calculates the stone material volume of needs, and carries out the arrangement of interior line and external line according to the size of a dimension of stone material, and for keeping pleasing to the eye, the interval between interior line and the external line is the same.
3) Cement paving: paving special cement on the ground in the arranged inner line, and coating a layer of adhesive on the special cement;
4) stone material laying: attaching the stone to the adhesive, and filling the space between the inner line and the outer line with special cement;
5) and (3) post-treatment: knocking the stone by using a rubber hammer to compact the stone, and then pointing the cement which exceeds the upper surface of the stone after compaction;
6) and (3) drying: keeping the room cool and ventilated until completely dry.
Preferably, the paving thickness of the special cement is 3-5 cm, and the thickness of the adhesive is 0.5-2 cm; the interval between the inner line and the outer line is 3-5 cm.
Preferably, the adhesive comprises the following components in parts by weight:
30 parts of modified epoxy resin, 0.5 part of nitrile rubber, 8 parts of active diluent, 1 part of selective solvent, 0.5 part of modified graphene oxide, 0.5 part of plasticizer and 20 parts of curing agent.
Preferably, the reactive diluent is one or more of β -hydroxyethyl methacrylate, 1, 6-hexanediol diacrylate, glycidyl neodecanoate, trimethylolpropane triglycidyl ether and castor oil polyglycidyl ether.
Preferably, the selective solvent is one or more of benzyl alcohol, acetone, xylene, glycidyl ether, 1, 2-cyclohexanediol diglycidyl ether.
Preferably, the curing agent is one or more of aliphatic amine, alicyclic amine, aromatic amine and polyamide.
Preferably, the preparation process of the modified graphene oxide is as follows:
s1, preparing graphene oxide:
adding graphite powder and sodium nitrate into a container, fixing in an ice-water bath, slowly pouring 98% concentrated sulfuric acid into the container, stirring uniformly, adding potassium permanganate powder, stirring in the ice-water bath for reaction for 1-2 hours, heating to 40-50 ℃, continuing to stir for reaction for 0.5-1 hour, dropwise adding deionized water, gradually heating the liquid in the container, stirring for 0.2-0.5 hour after dropwise adding, adding 20-40% hydrogen peroxide until no bubbles are generated, centrifuging to obtain a solid, washing to be neutral by using deionized water, freeze-drying, and grinding into powder to obtain graphene oxide;
wherein the mass ratio of the graphite powder to the sodium nitrate to the concentrated sulfuric acid is 1: 0.5-2: 3-8; the mass ratio of the potassium permanganate powder to the graphite powder is 1: 5-10; the mass ratio of the dropping amount of the deionized water to the concentrated sulfuric acid is 1: 0.5-2; the mass ratio of the hydrogen peroxide to the concentrated sulfuric acid is 1: 0.1-0.5;
s2, preparing modified graphene oxide:
adding pilocarpine hydrochloride into deionized water, and stirring until the pilocarpine hydrochloride is completely hydrolyzed to obtain a pilocarpine hydrochloride solution; weighing graphene oxide, adding the graphene oxide into deionized water, and uniformly dispersing to obtain a graphene oxide solution; adding the pilocarpine hydrochloride solution into the graphene oxide solution, stirring for 0.5-1 h, performing ultrasonic treatment for 1-2 h, pouring into a reaction kettle with a polytetrafluoroethylene lining, heating to 80-120 ℃, reacting for 5-10 h, cooling to room temperature, filtering to obtain a solid, performing freeze drying, and grinding into powder to obtain modified graphene oxide;
wherein the solid-to-liquid ratio of the pilocarpine hydrochloride to the deionized water is 1: 10-30; the solid-liquid ratio of the graphene oxide to the deionized water is 1: 20-50; the volume ratio of the pilocarpine hydrochloride solution to the graphene oxide solution is 1: 2-8.
Preferably, the preparation method of the modified epoxy resin comprises the following steps:
(1) adding 0.5g of polymethylphenylsiloxane into n-butanol, uniformly mixing, sequentially adding 2-mercaptopropionic acid and 2, 2-dimethoxy-acetophenone, placing the mixture in an ice water bath, stirring and reacting for 0.5-1 h, transferring the mixture to an ultraviolet lamp for radiation reaction for 1-2 h, filtering to obtain a solid, washing the solid with acetone for 0.2-0.5 h, drying the solid in a cool and ventilated place at room temperature, and crushing the solid by a nano crusher to obtain a modifier;
wherein the mass ratio of the polymethylphenylsiloxane, the 2-mercaptopropionic acid, the 2, 2-dimethoxy-acetophenone to the n-butanol is 2-3: 4-8: 0.1-0.5: 100;
(2) adding the modifier into epoxy resin, and stirring for 0.5-2 h at 100-160 ℃ to obtain modified epoxy resin; wherein the mass ratio of the modifier to the epoxy resin is 1: 10-20.
Preferably, the radiation wavelength of the ultraviolet lamp is 320-400 nm, and the power of the ultraviolet lamp is 50-150W.
Preferably, when the adhesive is used, the modified epoxy resin, the nitrile rubber, the reactive diluent, the selective solvent, the modified graphene oxide and the plasticizer are stirred uniformly, and then the curing agent is added.
Preferably, the special cement consists of the following components in parts by weight:
90 parts of Portland cement, 210 parts of carborundum, 12 parts of water, 5 parts of micro-silica powder, 12 parts of superfine powder, 0.6 part of water reducing agent, 1.2 parts of modified latex powder, 0.1 part of glass fiber, 1 part of alumina and 10 parts of fly ash;
preferably, the preparation method of the modified redispersible latex powder comprises the following steps:
(1) adding monoalkoxy pyrophosphate titanate into deionized water, stirring uniformly, adding butyl benzyl phthalate, stirring uniformly, continuously adding sodium dodecyl sulfate, and stirring uniformly again to obtain a pretreatment solution;
wherein the mass ratio of the monoalkoxy pyrophosphate titanate to the deionized water is 1: 15-20; the mass ratio of butyl benzyl phthalate, sodium dodecyl sulfate to monoalkoxy pyrophosphate titanate is 1: 0.25-0.5: 10-12;
(2) weighing redispersible latex powder, adding the redispersible latex powder into the pretreatment solution, and stirring and reacting for 0.5-1 h to obtain a primary reaction solution;
wherein the solid-to-liquid ratio of the redispersible latex powder to the pretreatment liquid is 1: 15-30;
(3) weighing carbon nanotubes, adding the carbon nanotubes into the primary reaction solution, stirring the mixture uniformly, placing the mixture into a high-pressure reaction kettle for reaction for 2-5 hours, freeze-drying the mixture, and grinding the mixture into powder to obtain modified latex powder;
wherein the solid-to-liquid ratio of the carbon nano tube to the primary reaction liquid is 1: 50-120.
Preferably, when the modified redispersible latex powder is prepared, the pressure of the high-pressure reaction kettle is set to be 0.5-3 MPa.
Example 3
A construction method for laying and pasting indoor stone materials capable of preventing hollowing comprises the following steps:
1) pretreatment: after the surface of the stone is subjected to impurity removal and cleaning, cleaning the ground to be paved with the stone, and ensuring the smoothness of a paved base layer;
2) line snapping: the measurement needs the area size of paving the stone material, calculates the stone material volume of needs, and carries out the arrangement of interior line and external line according to the size of a dimension of stone material, and for keeping pleasing to the eye, the interval between interior line and the external line is the same.
3) Cement paving: paving special cement on the ground in the arranged inner line, and coating a layer of adhesive on the special cement;
4) stone material laying: attaching the stone to the adhesive, and filling the space between the inner line and the outer line with special cement;
5) and (3) post-treatment: knocking the stone by using a rubber hammer to compact the stone, and then pointing the cement which exceeds the upper surface of the stone after compaction;
6) and (3) drying: keeping the room cool and ventilated until completely dry.
Preferably, the paving thickness of the special cement is 3-5 cm, and the thickness of the adhesive is 0.5-2 cm; the interval between the inner line and the outer line is 3-5 cm.
Preferably, the adhesive comprises the following components in parts by weight:
120 parts of modified epoxy resin, 8 parts of nitrile rubber, 25 parts of reactive diluent, 18 parts of selective solvent, 10 parts of modified graphene oxide, 3 parts of plasticizer and 60 parts of curing agent.
Preferably, the reactive diluent is one or more of β -hydroxyethyl methacrylate, 1, 6-hexanediol diacrylate, glycidyl neodecanoate, trimethylolpropane triglycidyl ether and castor oil polyglycidyl ether.
Preferably, the selective solvent is one or more of benzyl alcohol, acetone, xylene, glycidyl ether, 1, 2-cyclohexanediol diglycidyl ether.
Preferably, the curing agent is one or more of aliphatic amine, alicyclic amine, aromatic amine and polyamide.
Preferably, the preparation process of the modified graphene oxide is as follows:
s1, preparing graphene oxide:
adding graphite powder and sodium nitrate into a container, fixing in an ice-water bath, slowly pouring 98% concentrated sulfuric acid into the container, stirring uniformly, adding potassium permanganate powder, stirring in the ice-water bath for reaction for 1-2 hours, heating to 40-50 ℃, continuing to stir for reaction for 0.5-1 hour, dropwise adding deionized water, gradually heating the liquid in the container, stirring for 0.2-0.5 hour after dropwise adding, adding 20-40% hydrogen peroxide until no bubbles are generated, centrifuging to obtain a solid, washing to be neutral by using deionized water, freeze-drying, and grinding into powder to obtain graphene oxide;
wherein the mass ratio of the graphite powder to the sodium nitrate to the concentrated sulfuric acid is 1: 0.5-2: 3-8; the mass ratio of the potassium permanganate powder to the graphite powder is 1: 5-10; the mass ratio of the dropping amount of the deionized water to the concentrated sulfuric acid is 1: 0.5-2; the mass ratio of the hydrogen peroxide to the concentrated sulfuric acid is 1: 0.1-0.5;
s2, preparing modified graphene oxide:
adding pilocarpine hydrochloride into deionized water, and stirring until the pilocarpine hydrochloride is completely hydrolyzed to obtain a pilocarpine hydrochloride solution; weighing graphene oxide, adding the graphene oxide into deionized water, and uniformly dispersing to obtain a graphene oxide solution; adding the pilocarpine hydrochloride solution into the graphene oxide solution, stirring for 0.5-1 h, performing ultrasonic treatment for 1-2 h, pouring into a reaction kettle with a polytetrafluoroethylene lining, heating to 80-120 ℃, reacting for 5-10 h, cooling to room temperature, filtering to obtain a solid, performing freeze drying, and grinding into powder to obtain modified graphene oxide;
wherein the solid-to-liquid ratio of the pilocarpine hydrochloride to the deionized water is 1: 10-30; the solid-liquid ratio of the graphene oxide to the deionized water is 1: 20-50; the volume ratio of the pilocarpine hydrochloride solution to the graphene oxide solution is 1: 2-8.
Preferably, the preparation method of the modified epoxy resin comprises the following steps:
(1) adding 0.5g of polymethylphenylsiloxane into n-butanol, uniformly mixing, sequentially adding 2-mercaptopropionic acid and 2, 2-dimethoxy-acetophenone, placing the mixture in an ice water bath, stirring and reacting for 0.5-1 h, transferring the mixture to an ultraviolet lamp for radiation reaction for 1-2 h, filtering to obtain a solid, washing the solid with acetone for 0.2-0.5 h, drying the solid in a cool and ventilated place at room temperature, and crushing the solid by a nano crusher to obtain a modifier;
wherein the mass ratio of the polymethylphenylsiloxane, the 2-mercaptopropionic acid, the 2, 2-dimethoxy-acetophenone to the n-butanol is 2-3: 4-8: 0.1-0.5: 100;
(2) adding the modifier into epoxy resin, and stirring for 0.5-2 h at 100-160 ℃ to obtain modified epoxy resin; wherein the mass ratio of the modifier to the epoxy resin is 1: 10-20.
Preferably, the radiation wavelength of the ultraviolet lamp is 320-400 nm, and the power of the ultraviolet lamp is 50-150W.
Preferably, when the adhesive is used, the modified epoxy resin, the nitrile rubber, the reactive diluent, the selective solvent, the modified graphene oxide and the plasticizer are stirred uniformly, and then the curing agent is added.
Preferably, the special cement consists of the following components in parts by weight:
110 parts of Portland cement, 230 parts of carborundum, 15 parts of water, 7 parts of micro silicon powder, 18 parts of superfine powder, 1 part of water reducing agent, 2 parts of modified latex powder, 0.5 part of glass fiber, 5 parts of alumina and 15 parts of fly ash;
preferably, the preparation method of the modified redispersible latex powder comprises the following steps:
(1) adding monoalkoxy pyrophosphate titanate into deionized water, stirring uniformly, adding butyl benzyl phthalate, stirring uniformly, continuously adding sodium dodecyl sulfate, and stirring uniformly again to obtain a pretreatment solution;
wherein the mass ratio of the monoalkoxy pyrophosphate titanate to the deionized water is 1: 15-20; the mass ratio of butyl benzyl phthalate, sodium dodecyl sulfate to monoalkoxy pyrophosphate titanate is 1: 0.25-0.5: 10-12;
(2) weighing redispersible latex powder, adding the redispersible latex powder into the pretreatment solution, and stirring and reacting for 0.5-1 h to obtain a primary reaction solution;
wherein the solid-to-liquid ratio of the redispersible latex powder to the pretreatment liquid is 1: 15-30;
(3) weighing carbon nanotubes, adding the carbon nanotubes into the primary reaction solution, stirring the mixture uniformly, placing the mixture into a high-pressure reaction kettle for reaction for 2-5 hours, freeze-drying the mixture, and grinding the mixture into powder to obtain modified latex powder;
wherein the solid-to-liquid ratio of the carbon nano tube to the primary reaction liquid is 1: 50-120.
Preferably, when the modified redispersible latex powder is prepared, the pressure of the high-pressure reaction kettle is set to be 0.5-3 MPa.
Comparative example
A construction method for laying and pasting indoor stone materials capable of preventing hollowing comprises the following steps:
1) pretreatment: after the surface of the stone is subjected to impurity removal and cleaning, cleaning the ground to be paved with the stone, and ensuring the smoothness of a paved base layer;
2) line snapping: the measurement needs the area size of paving the stone material, calculates the stone material volume of needs, and carries out the arrangement of interior line and external line according to the size of a dimension of stone material, and for keeping pleasing to the eye, the interval between interior line and the external line is the same.
3) Cement paving: paving special cement on the ground in the arranged inner line, and coating a layer of adhesive on the special cement;
4) stone material laying: attaching the stone to the adhesive, and filling the space between the inner line and the outer line with special cement;
5) and (3) post-treatment: knocking the stone by using a rubber hammer to compact the stone, and then pointing the cement which exceeds the upper surface of the stone after compaction;
6) and (3) drying: keeping the room cool and ventilated until completely dry.
Preferably, the paving thickness of the special cement is 3-5 cm, and the thickness of the adhesive is 0.5-2 cm; the interval between the inner line and the outer line is 3-5 cm.
Preferably, the adhesive comprises the following components in parts by weight:
80 parts of epoxy resin, 5 parts of nitrile rubber, 15 parts of reactive diluent, 12 parts of selective solvent, 6 parts of graphene oxide, 2 parts of plasticizer and 40 parts of curing agent.
Preferably, the reactive diluent is one or more of β -hydroxyethyl methacrylate, 1, 6-hexanediol diacrylate, glycidyl neodecanoate, trimethylolpropane triglycidyl ether and castor oil polyglycidyl ether.
Preferably, the selective solvent is one or more of benzyl alcohol, acetone, xylene, glycidyl ether, 1, 2-cyclohexanediol diglycidyl ether.
Preferably, the curing agent is one or more of aliphatic amine, alicyclic amine, aromatic amine and polyamide.
Preferably, the radiation wavelength of the ultraviolet lamp is 320-400 nm, and the power of the ultraviolet lamp is 50-150W.
Preferably, when the adhesive is used, the modified epoxy resin, the nitrile rubber, the reactive diluent, the selective solvent, the modified graphene oxide and the plasticizer are stirred uniformly, and then the curing agent is added.
Preferably, the special cement consists of the following components in parts by weight:
100 parts of portland cement, 220 parts of carborundum, 13 parts of water, 6 parts of micro-silica powder, 15 parts of superfine powder, 0.8 part of water reducing agent, 1.8 parts of latex powder, 0.3 part of glass fiber, 3 parts of aluminum oxide and 12 parts of fly ash;
in order to more clearly illustrate the invention, the construction method of the embodiment 1-3 of the invention is carried out, and the performance of the prepared paving sample is detected, wherein the grade of the difficulty degree of stone separation is 0-5 (the larger the grade value is, the harder the separation is); the aging treatment was carried out at a temperature of 100 ℃ and the results are shown in Table 1:
TABLE 1 Patching Property test
As can be seen from table 1, the paving samples prepared by the construction methods used in embodiments 1 to 3 of the present invention are difficult to separate when the paving time is 120s, which indicates that the adhesion effect is good; and after aging treatment for 72h, no empty drum still appears, which indicates that the empty drum prevention effect is better.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The construction method for paving and pasting the anti-hollowing indoor stone is characterized by comprising the following steps:
1) pretreatment: after the surface of the stone is subjected to impurity removal and cleaning, cleaning the ground to be paved with the stone, and ensuring the smoothness of a paved base layer;
2) line snapping: measuring the area of the stone to be paved, calculating the required stone amount, and arranging inner lines and outer lines according to the dimension of the stone, wherein the intervals between the inner lines and the outer lines are the same for keeping the appearance;
3) cement paving: paving special cement on the ground in the arranged inner line, and coating a layer of adhesive on the special cement;
4) stone material laying: attaching the stone to the adhesive, and filling the space between the inner line and the outer line with special cement;
5) and (3) post-treatment: knocking the stone by using a rubber hammer to compact the stone, and then pointing the cement which exceeds the upper surface of the stone after compaction;
6) and (3) drying: keeping the room cool and ventilated until completely dry.
2. The construction method for laying and pasting the anti-hollowing indoor stone as claimed in claim 1, wherein the laying thickness of the special cement is 3-5 cm, and the thickness of the adhesive is 0.5-2 cm; the interval between the inner line and the outer line is 3-5 cm.
3. The construction method of the anti-hollowing indoor stone paving and pasting material as claimed in claim 1 or 2, wherein the adhesive comprises the following components in parts by weight:
30-120 parts of modified epoxy resin, 0.5-8 parts of nitrile rubber, 8-25 parts of reactive diluent, 1-18 parts of selective solvent, 0.5-10 parts of modified graphene oxide, 0.5-3 parts of plasticizer and 20-60 parts of curing agent.
4. The construction method of the anti-hollowing indoor stone pavement as claimed in claim 3, wherein the reactive diluent is one or more of methacrylic acid- β -hydroxyethyl ester, 1, 6-hexanediol diacrylate, glycidyl neodecanoate, trimethylolpropane triglycidyl ether and castor oil polyglycidyl ether.
5. The construction method of the anti-hollowing indoor stone paving and pasting material as claimed in claim 3, wherein the selective solvent is one or more of benzyl alcohol, acetone, xylene, glycidyl ether and 1, 2-cyclohexanediol diglycidyl ether.
6. The method as claimed in claim 3, wherein the curing agent is one or more of aliphatic amine, alicyclic amine, aromatic amine and polyamide.
7. The construction method of the anti-hollowing indoor stone paving and pasting layer as claimed in claim 3, wherein the preparation process of the modified graphene oxide is as follows:
s1, preparing graphene oxide:
adding graphite powder and sodium nitrate into a container, fixing in an ice-water bath, slowly pouring 98% concentrated sulfuric acid into the container, stirring uniformly, adding potassium permanganate powder, stirring in the ice-water bath for reaction for 1-2 hours, heating to 40-50 ℃, continuing to stir for reaction for 0.5-1 hour, dropwise adding deionized water, gradually heating the liquid in the container, stirring for 0.2-0.5 hour after dropwise adding, adding 20-40% hydrogen peroxide until no bubbles are generated, centrifuging to obtain a solid, washing to be neutral by using deionized water, freeze-drying, and grinding into powder to obtain graphene oxide;
wherein the mass ratio of the graphite powder to the sodium nitrate to the concentrated sulfuric acid is 1: 0.5-2: 3-8; the mass ratio of the potassium permanganate powder to the graphite powder is 1: 5-10; the mass ratio of the dropping amount of the deionized water to the concentrated sulfuric acid is 1: 0.5-2; the mass ratio of the hydrogen peroxide to the concentrated sulfuric acid is 1: 0.1-0.5;
s2, preparing modified graphene oxide:
adding pilocarpine hydrochloride into deionized water, and stirring until the pilocarpine hydrochloride is completely hydrolyzed to obtain a pilocarpine hydrochloride solution; weighing graphene oxide, adding the graphene oxide into deionized water, and uniformly dispersing to obtain a graphene oxide solution; adding the pilocarpine hydrochloride solution into the graphene oxide solution, stirring for 0.5-1 h, performing ultrasonic treatment for 1-2 h, pouring into a reaction kettle with a polytetrafluoroethylene lining, heating to 80-120 ℃, reacting for 5-10 h, cooling to room temperature, filtering to obtain a solid, performing freeze drying, and grinding into powder to obtain modified graphene oxide;
wherein the solid-to-liquid ratio of the pilocarpine hydrochloride to the deionized water is 1: 10-30; the solid-liquid ratio of the graphene oxide to the deionized water is 1: 20-50; the volume ratio of the pilocarpine hydrochloride solution to the graphene oxide solution is 1: 2-8.
8. The construction method of the anti-hollowing indoor stone paving and pasting according to the claim 3, characterized in that the preparation method of the modified epoxy resin is as follows:
(1) adding 0.5g of polymethylphenylsiloxane into n-butanol, uniformly mixing, sequentially adding 2-mercaptopropionic acid and 2, 2-dimethoxy-acetophenone, placing the mixture in an ice water bath, stirring and reacting for 0.5-1 h, transferring the mixture to an ultraviolet lamp for radiation reaction for 1-2 h, filtering to obtain a solid, washing the solid with acetone for 0.2-0.5 h, drying the solid in a cool and ventilated place at room temperature, and crushing the solid by a nano crusher to obtain a modifier;
wherein the mass ratio of the polymethylphenylsiloxane, the 2-mercaptopropionic acid, the 2, 2-dimethoxy-acetophenone to the n-butanol is 2-3: 4-8: 0.1-0.5: 100;
(2) adding the modifier into epoxy resin, and stirring for 0.5-2 h at 100-160 ℃ to obtain modified epoxy resin; wherein the mass ratio of the modifier to the epoxy resin is 1: 10-20.
9. The construction method of the anti-hollowing indoor stone paving and pasting material as claimed in claim 8, wherein the ultraviolet lamp radiation wavelength is 320-400 nm, and the ultraviolet lamp power is 50-150W.
10. The construction method of the hollowing-proof indoor stone paving and pasting structure as claimed in claim 3, wherein when the adhesive is used, the modified epoxy resin, the nitrile rubber, the reactive diluent, the selective solvent, the modified graphene oxide and the plasticizer are stirred uniformly, and then the curing agent is added.
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| CN112012418A (en) * | 2020-08-26 | 2020-12-01 | 瑞洲建设集团有限公司 | Construction method for laying indoor stone materials capable of preventing hollowing |
| CN112012418B (en) * | 2020-08-26 | 2021-08-03 | 瑞洲建设集团有限公司 | Construction method for laying indoor stone materials capable of preventing hollowing |
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Application publication date: 20200717 |