CN113773019A - Moisture-proof and permeation-resistant epoxy floor mortar and preparation method thereof - Google Patents
Moisture-proof and permeation-resistant epoxy floor mortar and preparation method thereof Download PDFInfo
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- CN113773019A CN113773019A CN202111100892.9A CN202111100892A CN113773019A CN 113773019 A CN113773019 A CN 113773019A CN 202111100892 A CN202111100892 A CN 202111100892A CN 113773019 A CN113773019 A CN 113773019A
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- 239000004593 Epoxy Substances 0.000 title claims abstract description 74
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 73
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000008367 deionised water Substances 0.000 claims abstract description 68
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 68
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 47
- 239000003822 epoxy resin Substances 0.000 claims abstract description 41
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 41
- 239000006184 cosolvent Substances 0.000 claims abstract description 37
- 239000002994 raw material Substances 0.000 claims abstract description 29
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 23
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000010703 silicon Substances 0.000 claims abstract description 21
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 21
- 239000002270 dispersing agent Substances 0.000 claims abstract description 19
- 239000000839 emulsion Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000013530 defoamer Substances 0.000 claims abstract description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 101
- 239000004917 carbon fiber Substances 0.000 claims description 101
- 238000003756 stirring Methods 0.000 claims description 81
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 57
- 238000001035 drying Methods 0.000 claims description 39
- 238000005406 washing Methods 0.000 claims description 39
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 36
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 21
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 20
- 239000006004 Quartz sand Substances 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 19
- 239000000654 additive Substances 0.000 claims description 18
- 230000000996 additive effect Effects 0.000 claims description 18
- 239000004568 cement Substances 0.000 claims description 18
- 238000000967 suction filtration Methods 0.000 claims description 18
- 229920002873 Polyethylenimine Polymers 0.000 claims description 17
- PASDCCFISLVPSO-UHFFFAOYSA-N benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1 PASDCCFISLVPSO-UHFFFAOYSA-N 0.000 claims description 14
- 230000020477 pH reduction Effects 0.000 claims description 14
- 239000003921 oil Substances 0.000 claims description 12
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 11
- 229910017604 nitric acid Inorganic materials 0.000 claims description 11
- 239000007821 HATU Substances 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000001291 vacuum drying Methods 0.000 claims description 10
- 230000004048 modification Effects 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 2
- 230000003487 anti-permeability effect Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 17
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 238000005917 acylation reaction Methods 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 239000000411 inducer Substances 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000012686 silicon precursor Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—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
-
- 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
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/04—Alkali metal or ammonium silicate cements ; Alkyl silicate cements; Silica sol cements; Soluble silicate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/386—Carbon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/42—Organo-silicon compounds
-
- 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
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Civil Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses moisture-proof and anti-permeation epoxy floor mortar and a preparation method thereof, wherein the epoxy floor mortar comprises the following raw materials in parts by weight: 8-10 parts of component A, 10-15 parts of component B, 120 parts of component C and 4-6 parts of sodium silicate; the component A comprises the following raw materials: by weight, 40-50 parts of water-based epoxy resin emulsion, 15-20 parts of organic silicon modified epoxy resin, 1-2 parts of cosolvent, 0.1-0.3 part of defoamer and 28-35 parts of deionized water; the component B comprises the following raw materials: 8-10 parts of modified carbon fiber, 15-20 parts of deionized water, 1-2 parts of cosolvent, 18-25 parts of curing agent, 2-3 parts of dispersant and 2-3 parts of defoaming agent. The preparation method disclosed by the invention has the advantages that the overall process design is reasonable, the operation is simple, the prepared epoxy floor mortar can form a compact cross-linked network, the mechanical property is excellent, the hydrophobic property is excellent, the waterproof and anti-permeation capability of the epoxy floor mortar is greatly improved, the epoxy floor mortar can be applied to the technical field, and the practicability is higher.
Description
Technical Field
The invention relates to the technical field of epoxy mortar, in particular to moisture-proof and anti-permeation epoxy floor mortar and a preparation method thereof.
Background
The epoxy mortar is prepared by adding fine quartz sand into epoxy resin paint and manually blending, is used for the construction of building objects, industrial floors and epoxy floors, is an intermediate polymer for increasing the compression resistance, the earthquake resistance and the wear resistance and the weather resistance, and can greatly prolong the service life and the service life of a soil layer; the composite material has excellent chemical properties, good corrosion resistance and weather resistance, and can realize the reinforcing and reinforcing effects.
The compressive strength of epoxy mortar purchased from the market at present is about 72-74MPa, the epoxy mortar cannot meet the requirements in actual processing, the waterproof and moistureproof performances of the epoxy mortar are poor, the durability and the service life of the epoxy floor are easily influenced in a humid environment, and inconvenience is brought to actual application.
Therefore, based on the situation, the application discloses moisture-proof and permeation-resistant epoxy floor mortar and a preparation method thereof, so as to solve the technical problems.
Disclosure of Invention
The invention aims to provide moisture-proof and permeation-resistant epoxy floor mortar and a preparation method thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a dampproofing anti-infiltration's epoxy terrace mortar, each component raw materials of epoxy terrace mortar includes: 8-10 parts of component A, 10-15 parts of component B, 120 parts of component C and 4-6 parts of sodium silicate.
According to an optimized scheme, the component A comprises the following raw materials: by weight, 40-50 parts of water-based epoxy resin emulsion, 15-20 parts of organic silicon modified epoxy resin, 1-2 parts of cosolvent, 0.1-0.3 part of defoamer and 28-35 parts of deionized water.
According to an optimized scheme, the component B comprises the following raw materials: 8-10 parts of modified carbon fiber, 15-20 parts of deionized water, 1-2 parts of cosolvent, 18-25 parts of curing agent, 2-3 parts of dispersant and 2-3 parts of defoaming agent.
According to an optimized scheme, the modified carbon fiber is a pretreated carbon fiber subjected to surface modification by PEI; the pretreated carbon fiber is mainly prepared by the reaction of carbon fiber, triethylamine and benzoyl chloride.
According to an optimized scheme, the component C comprises the following raw materials: by weight, 20-25 parts of white cement, 40-50 parts of quartz sand, 0.1-0.2 part of water reducing agent, 0.5-1 part of additive and 0.5-1 part of defoaming agent.
In an optimized scheme, the curing agent is a water-based organic amine curing agent.
According to an optimized scheme, the preparation method of the moisture-proof and permeation-resistant epoxy floor mortar specifically comprises the following steps:
(1) taking carbon fibers, extracting and cleaning the surfaces of the carbon fibers by acetone, washing the surfaces of the carbon fibers by deionized water, drying the carbon fibers in vacuum, putting the carbon fibers in a concentrated nitric acid solution for acidification after drying, carrying out suction filtration, washing the carbon fibers by deionized water, and drying the carbon fibers in vacuum;
(2) placing the dried carbon fiber in an N, N-dimethylformamide solution, performing ultrasonic dispersion, adding triethylamine and benzoyl chloride, stirring at 50-60 ℃ for reaction, collecting a sample after the reaction is finished, washing and drying to obtain a pretreated carbon fiber;
(3) taking N, N-dimethylformamide and polyethyleneimine, performing ultrasonic dispersion at 50-60 ℃, adding HATU, continuing stirring, adding pretreated carbon fiber, transferring to an oil bath at 110-120 ℃, stirring for reaction, performing suction filtration, washing with deionized water, and performing vacuum drying to obtain modified carbon fiber;
(4) mixing and stirring aqueous epoxy resin emulsion, organic silicon modified epoxy resin, a cosolvent, a defoaming agent and deionized water to obtain a component A;
taking modified carbon fiber and deionized water, carrying out ultrasonic dispersion, adding a cosolvent, a curing agent, a dispersing agent and a defoaming agent, and continuously stirring to obtain a component B;
mixing and stirring white cement, quartz sand, a water reducing agent, an additive and a defoaming agent to obtain a component C;
and taking the component B, adding the sodium silicate solution and the component A, oscillating and stirring, adding the component C, and continuously stirring uniformly to obtain a finished product.
The optimized scheme specifically comprises the following steps:
(1) taking carbon fibers, extracting and cleaning the surfaces of the carbon fibers for 20-24 hours by acetone, washing the surfaces of the carbon fibers by deionized water, drying the carbon fibers in vacuum, putting the carbon fibers in a concentrated nitric acid solution after drying, acidizing the carbon fibers at 70-80 ℃, filtering the carbon fibers by suction, washing the carbon fibers by deionized water, and drying the carbon fibers in vacuum;
(2) placing the dried carbon fiber in an N, N-dimethylformamide solution, performing ultrasonic dispersion for 10-20min, adding triethylamine and benzoyl chloride, stirring and reacting at 50-60 ℃ for 3-3.5h, collecting a sample after the reaction is finished, washing and drying to obtain a pretreated carbon fiber;
(3) taking N, N-dimethylformamide and polyethyleneimine, performing ultrasonic dispersion for 1-1.5h at 50-60 ℃, adding HATU, continuing stirring for 20-30min, adding pretreated carbon fiber, transferring to an oil bath at 110-120 ℃, stirring for reaction, performing suction filtration, washing with deionized water, and performing vacuum drying to obtain modified carbon fiber;
(4) mixing and stirring aqueous epoxy resin emulsion, organic silicon modified epoxy resin, a cosolvent, a defoaming agent and deionized water for 10-20min to obtain a component A;
taking modified carbon fiber and deionized water, carrying out ultrasonic dispersion for 10-20min, adding a cosolvent, a curing agent, a dispersing agent and a defoaming agent, and continuously stirring for 30-50min to obtain a component B;
mixing and stirring white cement, quartz sand, a water reducing agent, an additive and a defoaming agent for 20-30min to obtain a component C;
and (3) taking the component B, adding the sodium silicate solution and the component A, oscillating and stirring for 10-15min, adding the component C, and continuously stirring uniformly to obtain a finished product.
In the optimized scheme, in the step (1), the acidification time is 1-1.2 h.
In a more optimized scheme, in the step (3), the stirring reaction time under the oil bath is 10-12h
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses moisture-proof and anti-permeation epoxy terrace mortar and a preparation method thereof, wherein the epoxy terrace mortar comprises a component A, a component B, a component C, sodium silicate and the like, and as the moisture-proof and waterproof performance of the epoxy terrace in the prior art is poor, the service life and the adhesive force of the epoxy terrace are easily influenced, and the moisture-proof and waterproof performance of the epoxy terrace mortar needs to be improved; simultaneously based on can add the comprehensive properties of filler in order to improve epoxy terrace among the prior art among the epoxy terrace thick liquids, consequently this application selects the filler to be the carbon fiber to through carrying out surface modification to the carbon fiber, with the dampproofing and waterproofing ability that improves epoxy terrace.
When the carbon fiber is modified, because the surface of the carbon fiber is in a smooth disordered-layer graphite structure, the carbon fiber needs to be oxidized, concentrated nitric acid is used as an oxidant in the process, the surface oxidation treatment is carried out at a certain temperature, and the oxidation time is limited to 1-1.2h when the oxidation treatment is carried out, because the surface of the carbon fiber is oxidized to generate hydroxyl during the oxidation treatment of the carbon fiber, when the oxidation time reaches 1h, the content of the surface hydroxyl reaches the maximum, and after the oxidation is continuously carried out, the hydroxyl can be further oxidized to generate carboxyl; since the application needs surface modification of the carbon fiber to improve the waterproof performance of the epoxy mortar, the oxidation time is limited to 1-1.2h in the step to ensure the highest hydroxyl content.
The method comprises the following steps of carrying out surface acylation reaction on the components such as triethylamine and benzoyl chloride, introducing benzoyl chloride on the surface of carbon fiber to obtain pretreated carbon fiber, wherein in the process, the benzoyl chloride reacts with hydroxyl on the surface of the carbon fiber to generate an ester group, and introducing a benzene ring to improve the surface hydrophobicity of the carbon fiber; the process pretreats the carbon fibers, can ensure the dispersion performance of the carbon fibers so as to ensure the comprehensive mechanical property of the epoxy mortar, and simultaneously introduces hydrophobic groups to improve the hydrophobic property of the epoxy mortar.
This application is after carrying out the preliminary treatment to the carbon fiber, introduces polyethyleneimine again on its surface, because the mortar major ingredient is epoxy, introduces polyethyleneimine on the carbon fiber surface, and amino on the polyethyleneimine chain can react with the epoxy group in the epoxy to further improve cross-linking curing density, not only can effectively improve epoxy mortar's water-resistant moisture resistance, also have certain promotion to its corrosion resistance.
Simultaneously, because the polyethyleneimine chain has been introduced in epoxy mortar, in the preparation epoxy mortar in-process, sodium silicate solution has been added again in this application, utilize polyethyleneimine as the inducer in this process, the bionic silicification of induced silicon precursor normal position, inside epoxy mortar, surface doping silicon oxide, the generation of this silicon oxide particle not only can play the reinforcement effect to improve the mechanical properties of mortar, silicon oxide particle can also fill epoxy mortar simultaneously, with the waterproof anti-permeability of improvement epoxy mortar.
According to the invention, the organic silicon epoxy resin is added, the compactness of the cross-linked network can be improved through the mutual synergistic effect of the organic silicon epoxy resin and the modified carbon fiber, the prepared epoxy floor mortar has excellent hydrophobicity and impermeability, the service life of the epoxy floor mortar is ensured, and the actual effect is more excellent.
The invention discloses moisture-proof and anti-permeation epoxy floor mortar and a preparation method thereof, the overall process is reasonable in design and simple to operate, the prepared epoxy floor mortar can form a compact cross-linked network, and the epoxy floor mortar not only has excellent mechanical properties, but also has excellent hydrophobic properties, so that the waterproof and anti-permeation capability of the epoxy floor mortar is greatly improved, and the epoxy floor mortar can be applied to the technical field and has higher practicability.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a preparation method of moisture-proof and permeation-resistant epoxy floor mortar specifically comprises the following steps:
(1) taking carbon fibers, extracting and cleaning the surfaces of the carbon fibers for 20 hours by acetone, washing the surfaces by deionized water, drying the surfaces in vacuum, putting the carbon fibers in a concentrated nitric acid solution after drying, carrying out acidification treatment at the temperature of 70 ℃ for 1.2 hours, carrying out suction filtration, washing the surfaces by deionized water, and drying the surfaces in vacuum;
(2) placing the dried carbon fiber in an N, N-dimethylformamide solution, performing ultrasonic dispersion for 10min, adding triethylamine and benzoyl chloride, stirring at 50 ℃ for reaction for 3.5h, collecting a sample after the reaction is finished, washing and drying to obtain a pretreated carbon fiber;
(3) taking N, N-dimethylformamide and polyethyleneimine, performing ultrasonic dispersion for 1.5h at 50 ℃, adding HATU, continuing stirring for 20min, adding pretreated carbon fiber, transferring to a 110 ℃ oil bath, stirring for reaction for 12h, performing suction filtration, washing with deionized water, and performing vacuum drying to obtain modified carbon fiber;
(4) mixing and stirring water-based epoxy resin emulsion, organic silicon modified epoxy resin, a cosolvent, a defoaming agent and deionized water for 10min to obtain a component A;
taking modified carbon fiber and deionized water, carrying out ultrasonic dispersion for 10min, adding a cosolvent, a curing agent, a dispersing agent and a defoaming agent, and continuously stirring for 30min to obtain a component B;
mixing and stirring white cement, quartz sand, a water reducing agent, an additive and a defoaming agent for 20min to obtain a component C;
and (3) taking the component B, adding the sodium silicate solution and the component A, oscillating and stirring for 10min, adding the component C, and continuously stirring uniformly to obtain a finished product.
In this embodiment, each component of the epoxy floor mortar comprises: 8 parts of component A, 10 parts of component B, 100 parts of component C and 4 parts of sodium silicate.
The component A comprises the following raw materials: by weight, 40 parts of waterborne epoxy resin emulsion, 15 parts of organic silicon modified epoxy resin, 1 part of cosolvent, 0.1 part of defoamer and 28 parts of deionized water;
the component B comprises the following raw materials: by weight, 8 parts of modified carbon fiber, 15 parts of deionized water, 18 parts of curing agent, 2 parts of dispersing agent and 2 parts of defoaming agent.
The component C comprises the following raw materials: by weight, 20 parts of white cement, 40 parts of quartz sand, 0.1 part of water reducing agent, 0.5 part of additive and 0.5 part of defoaming agent.
Example 2:
a preparation method of moisture-proof and permeation-resistant epoxy floor mortar specifically comprises the following steps:
(1) taking carbon fibers, extracting and cleaning the surfaces of the carbon fibers for 22 hours by acetone, washing the surfaces by deionized water, drying the surfaces in vacuum, putting the carbon fibers in a concentrated nitric acid solution after drying, carrying out acidification treatment at the temperature of 75 ℃ for 1.1 hour, carrying out suction filtration, washing the surfaces by deionized water, and drying the surfaces in vacuum;
(2) placing the dried carbon fiber in an N, N-dimethylformamide solution, performing ultrasonic dispersion for 5min, adding triethylamine and benzoyl chloride, stirring and reacting at 55 ℃ for 3.2h, collecting a sample after the reaction is finished, washing and drying to obtain a pretreated carbon fiber;
(3) taking N, N-dimethylformamide and polyethyleneimine, performing ultrasonic dispersion for 1.2h at 55 ℃, adding HATU, continuing stirring for 25min, adding pretreated carbon fiber, transferring to 115 ℃ oil bath, stirring for reaction for 11h, performing suction filtration, washing with deionized water, and performing vacuum drying to obtain modified carbon fiber;
(4) mixing and stirring aqueous epoxy resin emulsion, organic silicon modified epoxy resin, a cosolvent, a defoaming agent and deionized water for 15min to obtain a component A;
taking modified carbon fiber and deionized water, carrying out ultrasonic dispersion for 15min, adding a cosolvent, a curing agent, a dispersing agent and a defoaming agent, and continuously stirring for 40min to obtain a component B;
mixing and stirring white cement, quartz sand, a water reducing agent, an additive and a defoaming agent for 25min to obtain a component C;
and (3) taking the component B, adding the sodium silicate solution and the component A, oscillating and stirring for 12min, adding the component C, and continuously stirring uniformly to obtain a finished product.
In this embodiment, each component of the epoxy floor mortar comprises: 9 parts of component A, 12 parts of component B, 110 parts of component C and 5 parts of sodium silicate.
The component A comprises the following raw materials: by weight, 45 parts of waterborne epoxy resin emulsion, 18 parts of organic silicon modified epoxy resin, 1.5 parts of cosolvent, 0.2 part of defoamer and 30 parts of deionized water;
the component B comprises the following raw materials: 9 parts of modified carbon fiber, 18 parts of deionized water, 1.5 parts of cosolvent, 20 parts of curing agent, 2.5 parts of dispersant and 2.5 parts of defoaming agent.
The component C comprises the following raw materials: by weight, 22 parts of white cement, 45 parts of quartz sand, 0.2 part of water reducing agent, 0.8 part of additive and 0.8 part of defoaming agent.
Example 3:
a preparation method of moisture-proof and permeation-resistant epoxy floor mortar specifically comprises the following steps:
(1) taking carbon fibers, extracting and cleaning the surfaces of the carbon fibers for 24 hours by acetone, washing the surfaces by deionized water, drying the surfaces in vacuum, putting the carbon fibers in a concentrated nitric acid solution after drying, carrying out acidification treatment at the temperature of 80 ℃ for 1 hour, carrying out suction filtration, washing the surfaces by deionized water, and drying the surfaces in vacuum;
(2) placing the dried carbon fiber in an N, N-dimethylformamide solution, performing ultrasonic dispersion for 20min, adding triethylamine and benzoyl chloride, stirring and reacting for 3h at 60 ℃, collecting a sample after the reaction is finished, washing and drying to obtain a pretreated carbon fiber;
(3) taking N, N-dimethylformamide and polyethyleneimine, performing ultrasonic dispersion for 1h at 60 ℃, adding HATU, continuing stirring for 30min, adding pretreated carbon fiber, transferring to a 120 ℃ oil bath, stirring for reaction for 10h, performing suction filtration, washing with deionized water, and performing vacuum drying to obtain modified carbon fiber;
(4) mixing and stirring aqueous epoxy resin emulsion, organic silicon modified epoxy resin, a cosolvent, a defoaming agent and deionized water for 20min to obtain a component A;
taking modified carbon fiber and deionized water, carrying out ultrasonic dispersion for 20min, adding a cosolvent, a curing agent, a dispersing agent and a defoaming agent, and continuously stirring for 50min to obtain a component B;
mixing and stirring white cement, quartz sand, a water reducing agent, an additive and a defoaming agent for 30min to obtain a component C;
and (3) taking the component B, adding the sodium silicate solution and the component A, oscillating and stirring for 15min, adding the component C, and continuously stirring uniformly to obtain a finished product.
In this embodiment, each component of the epoxy floor mortar comprises: 10 parts of component A, 15 parts of component B, 120 parts of component C and 6 parts of sodium silicate.
The component A comprises the following raw materials: by weight, 50 parts of waterborne epoxy resin emulsion, 20 parts of organic silicon modified epoxy resin, 2 parts of cosolvent, 0.3 part of defoamer and 35 parts of deionized water;
the component B comprises the following raw materials: the modified carbon fiber composite material comprises, by weight, 10 parts of modified carbon fiber, 20 parts of deionized water, 2 parts of cosolvent, 25 parts of curing agent, 3 parts of dispersant and 3 parts of defoaming agent.
The component C comprises the following raw materials: the water reducing agent comprises, by weight, 25 parts of white cement, 50 parts of quartz sand, 0.2 part of a water reducing agent, 1 part of an additive and 1 part of a defoaming agent.
Comparative example 1:
a preparation method of moisture-proof and permeation-resistant epoxy floor mortar specifically comprises the following steps:
(1) taking carbon fibers, extracting and cleaning the surfaces of the carbon fibers for 22 hours by acetone, washing the surfaces by deionized water, drying the surfaces in vacuum, putting the carbon fibers in a concentrated nitric acid solution after drying, carrying out acidification treatment at the temperature of 75 ℃ for 2 hours, carrying out suction filtration, washing the surfaces by deionized water, and drying the surfaces in vacuum;
(2) placing the dried carbon fiber in an N, N-dimethylformamide solution, performing ultrasonic dispersion for 5min, adding triethylamine and benzoyl chloride, stirring and reacting at 55 ℃ for 3.2h, collecting a sample after the reaction is finished, washing and drying to obtain a pretreated carbon fiber;
(3) taking N, N-dimethylformamide and polyethyleneimine, performing ultrasonic dispersion for 1.2h at 55 ℃, adding HATU, continuing stirring for 25min, adding pretreated carbon fiber, transferring to 115 ℃ oil bath, stirring for reaction for 11h, performing suction filtration, washing with deionized water, and performing vacuum drying to obtain modified carbon fiber;
(4) mixing and stirring aqueous epoxy resin emulsion, organic silicon modified epoxy resin, a cosolvent, a defoaming agent and deionized water for 15min to obtain a component A;
taking modified carbon fiber and deionized water, carrying out ultrasonic dispersion for 15min, adding a cosolvent, a curing agent, a dispersing agent and a defoaming agent, and continuously stirring for 40min to obtain a component B;
mixing and stirring white cement, quartz sand, a water reducing agent, an additive and a defoaming agent for 25min to obtain a component C;
and (3) taking the component B, adding the sodium silicate solution and the component A, oscillating and stirring for 12min, adding the component C, and continuously stirring uniformly to obtain a finished product.
In this embodiment, each component of the epoxy floor mortar comprises: 9 parts of component A, 12 parts of component B, 110 parts of component C and 5 parts of sodium silicate.
The component A comprises the following raw materials: by weight, 45 parts of waterborne epoxy resin emulsion, 18 parts of organic silicon modified epoxy resin, 1.5 parts of cosolvent, 0.2 part of defoamer and 30 parts of deionized water;
the component B comprises the following raw materials: 9 parts of modified carbon fiber, 18 parts of deionized water, 1.5 parts of cosolvent, 20 parts of curing agent, 2.5 parts of dispersant and 2.5 parts of defoaming agent.
The component C comprises the following raw materials: by weight, 22 parts of white cement, 45 parts of quartz sand, 0.2 part of water reducing agent, 0.8 part of additive and 0.8 part of defoaming agent.
Comparative example 1 was modified on the basis of example 2, the acidification time in comparative example 1 being 2h, the other component contents and process parameters being identical to those in example 2.
Comparative example 2:
a preparation method of moisture-proof and permeation-resistant epoxy floor mortar specifically comprises the following steps:
(1) taking carbon fibers, extracting and cleaning the surfaces of the carbon fibers for 22 hours by acetone, washing the surfaces by deionized water, drying the surfaces in vacuum, putting the carbon fibers in a concentrated nitric acid solution after drying, carrying out acidification treatment at the temperature of 75 ℃ for 1.1 hour, carrying out suction filtration, washing the surfaces by deionized water, and drying the surfaces in vacuum;
(2) taking N, N-dimethylformamide and polyethyleneimine, performing ultrasonic dispersion for 1.2h at 55 ℃, adding HATU, continuing stirring for 25min, adding dried carbon fiber, transferring to an oil bath at 115 ℃, stirring for reaction for 11h, performing suction filtration, washing with deionized water, and performing vacuum drying to obtain modified carbon fiber;
(3) mixing and stirring aqueous epoxy resin emulsion, organic silicon modified epoxy resin, a cosolvent, a defoaming agent and deionized water for 15min to obtain a component A;
taking modified carbon fiber and deionized water, carrying out ultrasonic dispersion for 15min, adding a cosolvent, a curing agent, a dispersing agent and a defoaming agent, and continuously stirring for 40min to obtain a component B;
mixing and stirring white cement, quartz sand, a water reducing agent, an additive and a defoaming agent for 25min to obtain a component C;
and (3) taking the component B, adding the sodium silicate solution and the component A, oscillating and stirring for 12min, adding the component C, and continuously stirring uniformly to obtain a finished product.
In this embodiment, each component of the epoxy floor mortar comprises: 9 parts of component A, 12 parts of component B, 110 parts of component C and 5 parts of sodium silicate.
The component A comprises the following raw materials: by weight, 45 parts of waterborne epoxy resin emulsion, 18 parts of organic silicon modified epoxy resin, 1.5 parts of cosolvent, 0.2 part of defoamer and 30 parts of deionized water;
the component B comprises the following raw materials: 9 parts of modified carbon fiber, 18 parts of deionized water, 1.5 parts of cosolvent, 20 parts of curing agent, 2.5 parts of dispersant and 2.5 parts of defoaming agent.
The component C comprises the following raw materials: by weight, 22 parts of white cement, 45 parts of quartz sand, 0.2 part of water reducing agent, 0.8 part of additive and 0.8 part of defoaming agent.
In comparative example 2, no acylation reaction was carried out, and the contents of other components and process parameters were the same as those of example 2.
Comparative example 3:
a preparation method of moisture-proof and permeation-resistant epoxy floor mortar specifically comprises the following steps:
(1) taking carbon fibers, extracting and cleaning the surfaces of the carbon fibers for 22 hours by acetone, washing the surfaces by deionized water, drying the surfaces in vacuum, putting the carbon fibers in a concentrated nitric acid solution after drying, carrying out acidification treatment at the temperature of 75 ℃ for 1.1 hour, carrying out suction filtration, washing the surfaces by deionized water, and drying the surfaces in vacuum;
(2) placing the dried carbon fiber in an N, N-dimethylformamide solution, performing ultrasonic dispersion for 5min, adding triethylamine and benzoyl chloride, stirring and reacting at 55 ℃ for 3.2h, collecting a sample after the reaction is finished, washing and drying to obtain a pretreated carbon fiber;
(3) taking N, N-dimethylformamide and polyethyleneimine, performing ultrasonic dispersion for 1.2h at 55 ℃, adding HATU, continuing stirring for 25min, adding pretreated carbon fiber, transferring to 115 ℃ oil bath, stirring for reaction for 11h, performing suction filtration, washing with deionized water, and performing vacuum drying to obtain modified carbon fiber;
(4) mixing and stirring aqueous epoxy resin emulsion, organic silicon modified epoxy resin, a cosolvent, a defoaming agent and deionized water for 15min to obtain a component A;
taking modified carbon fiber and deionized water, carrying out ultrasonic dispersion for 15min, adding a cosolvent, a curing agent, a dispersing agent and a defoaming agent, and continuously stirring for 40min to obtain a component B;
mixing and stirring white cement, quartz sand, a water reducing agent, an additive and a defoaming agent for 25min to obtain a component C;
and (3) taking the component B, adding the sodium silicate solution and the component A, oscillating and stirring for 12min, adding the component C, and continuously stirring uniformly to obtain a finished product.
In this embodiment, each component of the epoxy floor mortar comprises: 9 parts of component A, 12 parts of component B, 110 parts of component C and 5 parts of sodium silicate.
The component A comprises the following raw materials: by weight, 45 parts of waterborne epoxy resin emulsion, 18 parts of organic silicon modified epoxy resin, 1.5 parts of cosolvent, 0.2 part of defoamer and 30 parts of deionized water;
the component B comprises the following raw materials: 9 parts of modified carbon fiber, 18 parts of deionized water, 1.5 parts of cosolvent, 20 parts of curing agent, 2.5 parts of dispersant and 2.5 parts of defoaming agent.
The component C comprises the following raw materials: by weight, 22 parts of white cement, 45 parts of quartz sand, 0.2 part of water reducing agent, 0.8 part of additive and 0.8 part of defoaming agent.
In comparative example 3, no sodium silicate solution was added and the other component contents and process parameters were identical to those of example 2.
And (3) detection test:
1. samples were prepared from the mortars prepared in examples 1 to 3 and comparative examples 1 to 3 by the method of GB/T11970-1997, and the water content and water absorption of the samples were examined.
2. The mortars prepared in examples 1 to 3 and comparative examples 1 to 3 were tested for their erosion resistance to chloride and sulfate ions according to JGJ/T193-2009; and (3) taking the prepared mortar sample, placing the mortar sample in a sodium chloride solution with the mass fraction of 10%, placing the mortar sample for 28 days, and measuring the compressive strength of the mortar sample.
3. The compressive strength of the samples prepared in examples 1 to 3 and comparative examples 1 to 3 was tested according to GB/T17671-1999 "Cement mortar Strength test method".
| Item | Compressive strength (MPa) | Has water content of% | Water absorption% | 28d compressive Strength (MPa) |
| Example 1 | 87 | ＜1 | 1.3 | 85 |
| Example 2 | 89 | ＜1 | 1.1 | 87 |
| Example 3 | 89 | ＜1 | 1.2 | 87 |
| Comparative example 1 | 91 | 4 | 2.4 | 90 |
| Comparative example 2 | 86 | 9 | 4.2 | 82 |
| Comparative example 3 | 84 | 3.1 | 1.8 | 81 |
Examples 1-3 are according to the technical scheme disclosed in the invention, and comparative examples 1-3 are the control tests of example 2; comparative example 1 defines the acidification reaction time, the highest carboxyl content at 2h of acidification and the lower hydroxyl content than at 1-1.2h of acidification; comparative example 2 is not subjected to acylation reaction, hydrophobic group phenyl and ester group generated by acylation reaction are not introduced, and carbon fiber is easy to agglomerate and has certain influence on moisture resistance and mechanical property; comparative example 3 does not add sodium silicate solution, does not generate silica for filling, and has certain influence on the moisture resistance and the mechanical property.
And (4) conclusion: the invention discloses moisture-proof and anti-permeation epoxy floor mortar and a preparation method thereof, the overall process is reasonable in design and simple to operate, the prepared epoxy floor mortar can form a compact cross-linked network, and the epoxy floor mortar not only has excellent mechanical properties, but also has excellent hydrophobic properties, so that the waterproof and anti-permeation capability of the epoxy floor mortar is greatly improved, and the epoxy floor mortar can be applied to the technical field and has higher practicability.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a dampproofing anti-permeability's epoxy terrace mortar which characterized in that: the epoxy floor mortar comprises the following raw materials in parts by weight: 8-10 parts of component A, 10-15 parts of component B, 120 parts of component C and 4-6 parts of sodium silicate.
2. The moisture-resistant and permeation-resistant epoxy floor mortar of claim 1, wherein: the component A comprises the following raw materials: by weight, 40-50 parts of water-based epoxy resin emulsion, 15-20 parts of organic silicon modified epoxy resin, 1-2 parts of cosolvent, 0.1-0.3 part of defoamer and 28-35 parts of deionized water.
3. The moisture-resistant and permeation-resistant epoxy floor mortar of claim 1, wherein: the component B comprises the following raw materials: 8-10 parts of modified carbon fiber, 15-20 parts of deionized water, 1-2 parts of cosolvent, 18-25 parts of curing agent, 2-3 parts of dispersant and 2-3 parts of defoaming agent.
4. The moisture-resistant and permeation-resistant epoxy floor mortar of claim 3, wherein: the modified carbon fiber is a pretreated carbon fiber subjected to surface modification by PEI; the pretreated carbon fiber is mainly prepared by the reaction of carbon fiber, triethylamine and benzoyl chloride.
5. The moisture-resistant and permeation-resistant epoxy floor mortar of claim 1, wherein: the component C comprises the following raw materials: by weight, 20-25 parts of white cement, 40-50 parts of quartz sand, 0.1-0.2 part of water reducing agent, 0.5-1 part of additive and 0.5-1 part of defoaming agent.
6. The moisture-resistant and permeation-resistant epoxy floor mortar of claim 1, wherein: the curing agent is a water-based organic amine curing agent.
7. A preparation method of moisture-proof and permeation-resistant epoxy floor mortar is characterized by comprising the following steps: the method specifically comprises the following steps:
(1) taking carbon fibers, extracting and cleaning the surfaces of the carbon fibers by acetone, washing the surfaces of the carbon fibers by deionized water, drying the carbon fibers in vacuum, putting the carbon fibers in a concentrated nitric acid solution for acidification after drying, carrying out suction filtration, washing the carbon fibers by deionized water, and drying the carbon fibers in vacuum;
(2) placing the dried carbon fiber in an N, N-dimethylformamide solution, performing ultrasonic dispersion, adding triethylamine and benzoyl chloride, stirring at 50-60 ℃ for reaction, collecting a sample after the reaction is finished, washing and drying to obtain a pretreated carbon fiber;
(3) taking N, N-dimethylformamide and polyethyleneimine, performing ultrasonic dispersion at 50-60 ℃, adding HATU, continuing stirring, adding pretreated carbon fiber, transferring to an oil bath at 110-120 ℃, stirring for reaction, performing suction filtration, washing with deionized water, and performing vacuum drying to obtain modified carbon fiber;
(4) mixing and stirring aqueous epoxy resin emulsion, organic silicon modified epoxy resin, a cosolvent, a defoaming agent and deionized water to obtain a component A;
taking modified carbon fiber and deionized water, carrying out ultrasonic dispersion, adding a cosolvent, a curing agent, a dispersing agent and a defoaming agent, and continuously stirring to obtain a component B;
mixing and stirring white cement, quartz sand, a water reducing agent, an additive and a defoaming agent to obtain a component C;
and taking the component B, adding the sodium silicate solution and the component A, oscillating and stirring, adding the component C, and continuously stirring uniformly to obtain a finished product.
8. The preparation method of the moisture-proof and permeation-resistant epoxy floor mortar according to claim 7, characterized by comprising the following steps: the method specifically comprises the following steps:
(1) taking carbon fibers, extracting and cleaning the surfaces of the carbon fibers for 20-24 hours by acetone, washing the surfaces of the carbon fibers by deionized water, drying the carbon fibers in vacuum, putting the carbon fibers in a concentrated nitric acid solution after drying, acidizing the carbon fibers at 70-80 ℃, filtering the carbon fibers by suction, washing the carbon fibers by deionized water, and drying the carbon fibers in vacuum;
(2) placing the dried carbon fiber in an N, N-dimethylformamide solution, performing ultrasonic dispersion for 10-20min, adding triethylamine and benzoyl chloride, stirring and reacting at 50-60 ℃ for 3-3.5h, collecting a sample after the reaction is finished, washing and drying to obtain a pretreated carbon fiber;
(3) taking N, N-dimethylformamide and polyethyleneimine, performing ultrasonic dispersion for 1-1.5h at 50-60 ℃, adding HATU, continuing stirring for 20-30min, adding pretreated carbon fiber, transferring to an oil bath at 110-120 ℃, stirring for reaction, performing suction filtration, washing with deionized water, and performing vacuum drying to obtain modified carbon fiber;
(4) mixing and stirring aqueous epoxy resin emulsion, organic silicon modified epoxy resin, a cosolvent, a defoaming agent and deionized water for 10-20min to obtain a component A;
taking modified carbon fiber and deionized water, carrying out ultrasonic dispersion for 10-20min, adding a cosolvent, a curing agent, a dispersing agent and a defoaming agent, and continuously stirring for 30-50min to obtain a component B;
mixing and stirring white cement, quartz sand, a water reducing agent, an additive and a defoaming agent for 20-30min to obtain a component C;
and (3) taking the component B, adding the sodium silicate solution and the component A, oscillating and stirring for 10-15min, adding the component C, and continuously stirring uniformly to obtain a finished product.
9. The preparation method of the moisture-proof and permeation-resistant epoxy floor mortar according to claim 8, characterized in that: in the step (1), the acidification time is 1-1.2 h.
10. The preparation method of the moisture-proof and permeation-resistant epoxy floor mortar according to claim 8, characterized in that: in the step (3), the reaction time is 10-12h under stirring in oil bath.
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