CN106278041B - A kind of super-hydrophobic JS water-repellent paint and preparation method thereof - Google Patents

A kind of super-hydrophobic JS water-repellent paint and preparation method thereof Download PDF

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CN106278041B
CN106278041B CN201610667465.1A CN201610667465A CN106278041B CN 106278041 B CN106278041 B CN 106278041B CN 201610667465 A CN201610667465 A CN 201610667465A CN 106278041 B CN106278041 B CN 106278041B
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water
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CN106278041A (en
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赵国庆
周俊华
王峰
王�华
王治国
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Shandong Tianhui Waterproof Ltd By Share Ltd
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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
    • 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
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/022—Carbon
    • C04B14/024—Graphite
    • 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
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
    • C08F212/02—Monomers containing only one unsaturated aliphatic radical
    • C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
    • C08F212/06—Hydrocarbons
    • C08F212/08—Styrene
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C04B2111/00508—Cement paints
    • 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
    • C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
    • 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

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  • Polymers & Plastics (AREA)
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Abstract

A kind of super-hydrophobic JS water-repellent paint and preparation method thereof, coating includes component A super hydrophobic material, component B lotion and component C inorganic powder, component A super hydrophobic material is by 15-25 parts of graphene, 2.5-6 parts of water-soluble cationic surfactant, 55-75 parts of sodium silicate solution, 10%NaOH10-15 parts, 25-45 parts and deionized water 8-15 parts of silylating reagent are made by electrochemical layer area method, component B lotion is by 35-55 parts of hard monomer, 35-55 parts of soft monomer, 2-5 parts of function monomer, 2-10 parts of super hydrophobic material, 1-5 parts of coalescing agent, 1-5 parts of plasticizer, 0.8-1.5 parts of emulsifier, 0.5-1 parts of dispersing agent, 0.5-1 parts of preservative, 0.05-1 parts of defoaming agent and initiator 0.05-0. 1 part is formulated, and component C inorganic powder then includes 25-45 parts of ordinary portland cement, 25-45 parts of Portland fly ash cement, 20-30 parts of 200 mesh quartz sand, 15-10 parts of carbon nanotube and 0.5-1 parts of water-reducing agent；When preparation, the super hydrophobic material being added in emulsion polymerization imparts the more excellent bond strength of coating, waterproof performance and impact resistance equistability.

Description

A kind of super-hydrophobic JS water-repellent paint and preparation method thereof
Technical field
The invention patent belongs to technical field of coatings more particularly to a kind of water proof type cement base coating and preparation method thereof.
Background technique
JS water-repellent paint, " J " refers to that (Ju) polymer, " S " refer to (Shui) cement, so being exactly polymer cement waterproof material Material, is a kind of bi-component being combined with the polymer emulsions such as acrylate, ethylene-vinylacetate and inorganic cement, water Property building water-proof paint, be suitable for roofing, kitchen and toilet basement, pond and other construction waterproofing engineerings.Such water-repellent paint was both The rigidity of organic and/or inorganic materials, and the flexibility and high-adhesion of polymer are had both, waterproof effect is prominent, nontoxic, pollution-free, applies Work is easy, cost is relatively low, the popular welcome by implementation management department and unit in charge of construction.Current beauty, day, De Deng industry prosperity state The polymer cement waterproof paint of family all occupies comparable share in architectural waterproof material.China is from the beginning of the nineties in 20th century Start to develop polymer cement waterproof paint, by Ministry of Construction's technical appraisement, the Ministry of Construction prevents polymer within 1998 within 1995 Water paint is classified as one of the 13 kinds of water-repellent paints recommended in the first batch, belongs to the environment-friendly products that country advocates energetically.But China is voluntarily The polymer cement waterproof paint of research and development belongs to greatly low performance product, such as aqueous PVC clay, neoprene modified pitch coating Deng relatively external also certain distance.
Summary of the invention
The present invention provides a kind of super-hydrophobic JS water-repellent paints and preparation method thereof, which is characterized in that the coating includes Component A super hydrophobic material, component B lotion and component C inorganic powder, based on mass parts ratio, raw material is respectively as follows at being grouped as:
Component A super hydrophobic material:
15-25 parts of graphene
2.5-6 parts of water-soluble cationic surfactant
55-75 parts of sodium silicate solution
10-15 parts of 10%NaOH
25-45 parts of silylating reagent
8-15 parts of deionized water
Component B lotion:
35-55 parts of hard monomer
35-55 parts of soft monomer
2-5 parts of function monomer
2-10 parts of super hydrophobic material
1-5 parts of coalescing agent
1-5 parts of plasticizer
0.8-1.5 parts of emulsifier
0.5-1 parts of dispersing agent
0.5-1 parts of preservative
0.05-1 parts of defoaming agent
0.05-0.1 parts of initiator
Component C inorganic powder:
25-45 parts of ordinary portland cement
25-45 parts of Portland fly ash cement
200 20-30 parts of mesh quartz sands
15-10 parts of carbon nanotube
0.5-1 parts of water-reducing agent
The graphene be by 3-10 layers constituted with the periodically closelypacked carbon atom of benzene ring structure with ABC stacking two Tie up carbon material；The water-soluble cationic surfactant is polydimethyl diallyl ammonium chloride, N- octadecyl-bis- quaternary ammoniums Any one in salt, double dodecyl dimethyls-polyamines-bi-quaternary ammonium salt and 3- chloro-2-hydroxypropyl-trimethyl ammonium chloride；It is described Silylating reagent is one or more of vinyl silanes, Ethoxysilane, amino silane and methacryloxypropyl silane；
The super-hydrophobic JS water-repellent paint preparation includes the preparation of (one) component A super hydrophobic material, (two) component B lotion The preparation of preparation and (three) water-repellent paint, the specific steps are as follows:
(1) preparation of component A super hydrophobic material:
1.1 use deionized water ultrasonic cleaning graphene 25-40min, then are placed in 45-80 DEG C of constant temperature of drying box Dry 4.5-6h；
1.2 by 2.5-6 parts of water-soluble cationic surfactants into 8-15 parts of deionized waters, stir evenly, be put into 15-25 parts of graphenes, magnetic agitation 5-10min are stood, and are cleaned, dry；
55-75 parts of sodium silicate solutions are passed sequentially through cation exchange resin column and weak anion resin friendship by 1.3 Column is changed, the silicic acid glue weak solution obtained；Above-mentioned silicic acid glue weak solution pH is adjusted to 7 ~ 8 with 10%NaOH solution, gross mass five is first taken to divide One of silicic acid glue weak solution be put into pressure reducer and be concentrated under reduced pressure, after 10-15min, to keep liquid level constant in container to be Principle is slowly added into remaining silicic acid glue weak solution, continues to be concentrated under reduced pressure, and thickening temperature is 75-80 DEG C, and concentration time is The SiO of sodium orthosilicate solution quality 1/5th is made in 20-30min2Nano sol；
1.4 are added to 1.2 graphene 1.3 SiO2In Nano sol, using being shaken at 35-50 DEG C of ultrasonic constant-temperature Dynamic dispersion 6-8.5h, takes out graphene, deionized water cleaning, at room temperature aeration-drying 12 ~ for 24 hours；
1.5 are added to 1.4 graphene in 25-45 parts of silylating reagents, stir 4.5-6h at 20-35 DEG C of constant temperature, Graphene is taken out, is 6.8-7.2 with washes of absolute alcohol to pH, is dried in vacuo 6h at 60 DEG C, obtains based on graphene Component A super hydrophobic material；
(2) preparation of component B lotion:
2.1 add 35-55 parts of hard monomers, 35-55 parts of soft monomers, 2-5 parts of functional monomers and 0.8-1.5 parts of emulsifiers Enter into deionized water, pre-emulsion is made in homogeneous stir process 20-35min；
2.2 are added deionization in the reaction kettle equipped with agitating device, condensing unit, nitrogen protection device and feeding device Water opens agitating device, the initiator of 1/5 pre-emulsion, 1/5 dosage is poured into reaction kettle, is warming up to 80 DEG C, stirs, instead It should start that remaining pre-emulsion and initiator is added dropwise, pre-emulsion is controlled in 2.5-3.5h to the lotion with blue gloss is obtained It drips off, initiator control is dripped off in 3.5h-4h, and temperature is maintained at 80-85 DEG C, and speed of agitator is controlled in 100r/min, initiator 30min is kept the temperature after dripping off, and continuously adds 1-5 parts of coalescing agents, 1-5 parts of plasticizer, 0.5-1 parts of dispersing agents, 0.05-1 parts of defoamings Agent and 0.5-1 portions of preservatives, speed of agitator 80r/min, mixing time 15-30min, filtering and discharging；
2.3 are added to super hydrophobic material in step 1.5 in mixing liquid material described in step 2.2, are carried out using ultrasonic wave Decentralized processing, the ultrasonication frequency are 20 ~ 130KHz, and the processing time is 3-5min, obtain component B lotion；
(3) preparation of water-repellent paint:
Continue component B lotion in whipping step (two), in three times, 25-45 parts of ordinary portland cements is added while stirring 200 mesh quartz sand of 20-30 part is continuously added, 15-10 is eventually adding after mixing evenly with 25-45 parts of Portland fly ash cements Part carbon nanotube and 0.5-1 parts of water-reducing agents stir 30-60min, obtain the super-hydrophobic JS water-repellent paint.
The modulus of the sodium silicate solution is 3.5, SiO2Content 4%, Na2O content 1.15%.
The SiO2Nano sol, wherein containing SiO2 20%、Na2O 0.33%, pH 9.6, average grain diameter are 20 ~ 30nm.
The soft monomer is one or more of butyl acrylate, ethyl acrylate and Isooctyl acrylate monomer；It is described hard Monomer is one in styrene, methyl methacrylate, vinyl acetate, acrylonitrile, methyl acrylate, acrylic acid and acrylamide Kind is several；The functional monomer is hydroxymethyl acrylamide and acrylic acid；The initiator is ammonium persulfate or persulfuric acid Potassium；The emulsifier is lauryl sodium sulfate, polyoxyethylene carboxylate, alkyl phenol polyethoxy ether ammonium sulfate, SPAN system One or more of column and TWEEN Series.
Compared with prior art, beneficial achievement of the invention is as follows:
(1) graphene itself has very high specific surface area, and superficial attractive forces are strong, and surface can be big, can be when coating is dry Reticular structure is formed, the suction-operated between polymer and cement component, between coating entirety and substrate is enhanced, makes coating more Add densification, enhances coating to the adhesive force of substrate, improve the impact resistance of dope layer；
(2) by electrochemical layer area method, cationic surfactant and electronegative SiO are utilized2Between Nano sol Charge attraction effect carries out silanization water-proofing treatment to graphene surface, and super hydrophobic material is made, then participates in emulsion polymerization In the process, it can be distributed more uniformly across in dope layer in painting process, so that it is more uniform good to impart dope layer Waterproof performance.
Specific embodiment
The present invention is further explained in the light of specific embodiments, not limitation of the present invention, all according to this The equivalent replacement of any this field that disclosure of the invention content is carried out, all belongs to the scope of protection of the present invention.
Embodiment one
A kind of super-hydrophobic JS water-repellent paint and preparation method thereof, coating include component A super hydrophobic material, component B lotion and Component C inorganic powder, based on mass parts ratio, raw material is respectively as follows at being grouped as:
Component A super hydrophobic material: 20 parts of graphene, 3 parts of polydimethyl diallyl ammonium chloride, 55 parts of sodium silicate solution, 10%NaOH10 parts, 25 parts of methacryloxypropyl silane and 8 parts of deionized water；
Component B lotion: 40 parts of styrene, 35 parts of butyl acrylate, 5 parts of acrylic acid, 5 parts of modified graphene, propylene glycol fourth 2 parts of ether, 1.5 parts of dibutyl phthalate, 0.8 part of fatty alcohol polyoxyethylene ether, 0.8 part of polyacrylamide, 1,2- benzisoxa 0.5 part of thiazoline -3- ketone (BIT), 0.05 part, 0.05 part of ammonium persulfate of the more alkoxy ether copolymers of polysiloxanes -；
Component C inorganic powder: 35 parts of ordinary portland cement, 25 parts of Portland fly ash cement, 200 mesh quartz sands 25 Part, 15 parts of carbon nanotube, 0.5 part of lignosulfonates；
The water proof type cement base coating preparation includes the preparation of (one) component A super hydrophobic material, (two) component B lotion The preparation of preparation and (three) water-repellent paint, the specific steps are as follows:
(1) preparation of component A super hydrophobic material:
1.1 use deionized water ultrasonic cleaning graphene 25min, then are placed in 65 DEG C of constant temperature of drying box dry 5h；
1.2 by 3 parts of polydimethyl diallyl ammonium chloride into 8 parts of deionized waters, stir evenly, be put into 20 parts of graphite Alkene, magnetic agitation 6min are stood, and are cleaned, dry；
55 parts of sodium silicate solutions are passed sequentially through cation exchange resin column and weak anion resin exchange column by 1.3, SiO must be contained2 3.6%、Na2The silicic acid glue weak solution that O 0.005%, pH are 2.5；It is with 10%NaOH solution that above-mentioned silicic acid glue is dilute molten Liquid pH is adjusted to 7 ~ 8, first takes the silicic acid glue weak solution of gross mass 1/5th to be put into pressure reducer and is concentrated under reduced pressure, after 10min, To keep liquid level constant in container to be slowly added into remaining silicic acid glue weak solution as principle, continue to be concentrated under reduced pressure, concentration temperature Degree is 75 DEG C, concentration time 30min, and the SiO of sodium orthosilicate solution quality 1/5th is made2Nano sol, wherein containing SiO2 20%、Na2O 0.33%, pH 9.6, average grain diameter are 20 ~ 30nm；
1.4 are added to 1.2 graphene 1.3 SiO2In Nano sol, using vibration point at 35 DEG C of ultrasonic constant-temperature 8h is dissipated, graphene is taken out, deionized water is cleaned, at room temperature aeration-drying 12h；
1.5 1.4 graphene is added in 25 parts of methacryloxypropyl silanes, 6h is stirred at 25 DEG C of constant temperature, is taken out Graphene is 7.1 with washes of absolute alcohol to pH, is dried in vacuo 6h at 60 DEG C, and the component A obtained based on graphene is super Hydrophobic material；
(2) preparation of component B lotion
2.1 by 40 parts of styrene, 35 parts of butyl acrylate, and 5 parts and 0.8 part of fatty alcohol polyoxyethylene ether of acrylic acid are added Into deionized water, pre-emulsion is made in homogeneous stir process 25min；
2.2 are added deionization in the reaction kettle equipped with agitating device, condensing unit, nitrogen protection device and feeding device Water opens agitating device, the ammonium persulfate of 1/5 pre-emulsion, 1/5 dosage i.e. 0.01 part is poured into reaction kettle, is warming up to 80 DEG C, stirring, react to obtain band blue gloss lotion, start that remaining pre-emulsion and ammonium persulfate, pre-emulsification hydraulic control is added dropwise System is dripped off in 2.5h, and ammonium persulfate control is dripped off in 3.5h, and temperature is maintained at 80-85 DEG C, and speed of agitator is controlled in 100r/min, Initiator keeps the temperature 30min after dripping off, and continuously adds 2 parts of propandiol butyl ether, 1.5 parts of dibutyl phthalate, polyacrylamide 0.8 part, 0.5 part of 1,2-benzisothiazolin-3-one (BIT), 0.05 part of the more alkoxy ether copolymers of polysiloxanes-, stirring turn Speed is 80r/min, mixing time 20min, filtering and discharging；
2.3 are added to super hydrophobic material in step 1.3 in mixing liquid material described in step 2.2, using ultrasonic wave into Row decentralized processing, the ultrasonication frequency are 80KHz, and the processing time is 3min, obtain component B lotion；
(3) preparation of water-repellent paint:
Continue component B lotion in whipping step (two), in three times, 25 parts of ordinary portland cements and 45 is added while stirring Part Portland fly ash cement continuously adds 20 part of 200 mesh quartz sand after mixing evenly, be eventually adding 10 parts of carbon nanotubes and 0.5 part of lignosulfonates stirs 45min, obtains the water proof type cement base coating.
Through examining, each index of film is as follows in this example:
Standard requirements inspection result
Tensile strength (after immersion) >=60%/70% 85%
Elongation at break (after immersion) >=150%/65%/20% 175%
Adhesion strength (after immersion) >=0.5/0.7/1.0MPa 1.2MPa
Impermeability is waterproof
Impermeability (back side) >=0.6/0.8MPa 0.97MPa
It is -10 DEG C of low temperature flexibility, flawless -15 DEG C, flawless.

Claims (4)

1. a kind of preparation method of super-hydrophobic JS water-repellent paint, which is characterized in that the coating include component A super hydrophobic material, Component B lotion and component C inorganic powder, based on mass parts ratio, raw material is respectively as follows at being grouped as:
Component A super hydrophobic material:
15-25 parts of graphene
2.5-6 parts of water-soluble cationic surfactant
55-75 parts of sodium silicate solution
10-15 parts of 10%NaOH
25-45 parts of silylating reagent
8-15 parts of deionized water
Component B lotion:
35-55 parts of hard monomer
35-55 parts of soft monomer
2-5 parts of function monomer
2-10 parts of super hydrophobic material
1-5 parts of coalescing agent
1-5 parts of plasticizer
0.8-1.5 parts of emulsifier
0.5-1 parts of dispersing agent
0.5-1 parts of preservative
0.05-1 parts of defoaming agent
0.05-0.1 parts of initiator
Component C inorganic powder:
25-45 parts of ordinary portland cement
25-45 parts of Portland fly ash cement
200 20-30 parts of mesh quartz sands
15-10 parts of carbon nanotube
0.5-1 parts of water-reducing agent
The graphene is the Two-dimensional Carbon constituted by 3-10 layers with the periodically closelypacked carbon atom of benzene ring structure with ABC stacking Material；The water-soluble cationic surfactant be polydimethyl diallyl ammonium chloride, N- octadecyl-bi-quaternary ammonium salt, Any one in double dodecyl dimethyls-polyamines-bi-quaternary ammonium salt and 3- chloro-2-hydroxypropyl-trimethyl ammonium chloride；The silicon Alkylators are one or more of vinyl silanes, Ethoxysilane, amino silane and methacryloxypropyl silane；
The super-hydrophobic JS water-repellent paint preparation includes the preparation of (one) component A super hydrophobic material, the preparation of (two) component B lotion (3) preparation of water-repellent paint, the specific steps are as follows:
(1) preparation of component A super hydrophobic material:
1.1 use deionized water ultrasonic cleaning graphene 25-40min, then are placed in 45-80 DEG C of constant temperature of drying box dry 4.5-6h；
1.2 are added to 2.5-6 parts of water-soluble cationic surfactants in 8-15 parts of deionized waters, stir evenly, are put into 15- 25 parts of graphenes, magnetic agitation 5-10min are stood, and are cleaned, dry；
55-75 parts of sodium silicate solutions are passed sequentially through cation exchange resin column and weak anion resin exchange column by 1.3, are obtained Silicic acid glue weak solution；Above-mentioned silicic acid glue weak solution pH is adjusted to 7 ~ 8 with 10%NaOH solution, first takes gross mass 1/5th Silicic acid glue weak solution, which is put into pressure reducer, to be concentrated under reduced pressure, after 10-15min, to keep liquid level constant in container to delay as principle It is slow that remaining silicic acid glue weak solution is added, continue to be concentrated under reduced pressure, thickening temperature is 75-80 DEG C, concentration time 20- The SiO of sodium orthosilicate solution quality 1/5th is made in 30min2Nano sol；
1.4 are added to 1.2 graphene 1.3 SiO2In Nano sol, dispersed using being shaken at 35-50 DEG C of ultrasonic constant-temperature 6-8.5h takes out graphene, deionized water cleaning, at room temperature aeration-drying 12 ~ for 24 hours；
1.5 are added to 1.4 graphene in 25-45 parts of silylating reagents, and 4.5-6h is stirred at 20-35 DEG C of constant temperature, take out stone Black alkene is 6.8-7.2 with washes of absolute alcohol to pH, is dried in vacuo 6h at 60 DEG C, obtains the component A based on graphene Super hydrophobic material；
(2) preparation of component B lotion:
2.1 are added to 35-55 parts of hard monomers, 35-55 parts of soft monomers, 2-5 parts of functional monomers and 0.8-1.5 parts of emulsifiers In deionized water, pre-emulsion is made in homogeneous stir process 20-35min；
2.2 are added deionized water in the reaction kettle equipped with agitating device, condensing unit, nitrogen protection device and feeding device, Agitating device is opened, the initiator of 1/5 pre-emulsion, 1/5 dosage is poured into reaction kettle, is warming up to 80 DEG C, stirring, reaction is extremely The lotion with blue gloss is obtained, starts that remaining pre-emulsion and initiator is added dropwise, pre-emulsion is controlled in 2.5-3.5h drop Complete, initiator control is dripped off in 3.5h-4h, and temperature is maintained at 80-85 DEG C, and speed of agitator control is in 100r/min, initiator drop 30min is kept the temperature after complete, continuously adds 1-5 parts of coalescing agents, 1-5 parts of plasticizer, 0.5-1 parts of dispersing agents, 0.05-1 parts of defoaming agents With 0.5-1 portions of preservatives, speed of agitator 80r/min, mixing time 15-30min, filtering and discharging obtains mixing liquid material；
2.3 are added to super hydrophobic material in step 1.5 in mixing liquid material described in step 2.2, are dispersed using ultrasonic wave Processing, the ultrasonication frequency are 20 ~ 130KHz, and the processing time is 3-5min, obtain component B lotion；
(3) preparation of water-repellent paint:
Continue component B lotion in whipping step (two), in three times, 25-45 parts of ordinary portland cements and 25- is added while stirring 45 parts of Portland fly ash cements continuously add 200 mesh quartz sand of 20-30 part, are eventually adding 15-10 parts of carbon after mixing evenly Nanotube and 0.5-1 parts of water-reducing agents stir 30-60min, obtain the super-hydrophobic JS water-repellent paint.
2. a kind of preparation method of super-hydrophobic JS water-repellent paint according to claim 1, which is characterized in that the sodium metasilicate The modulus of solution is 3.5, SiO2Content 4%, Na2O content 1.15%.
3. a kind of preparation method of super-hydrophobic JS water-repellent paint according to claim 1, which is characterized in that the SiO2It receives Rice colloidal sol, wherein containing SiO2 20%、Na2O 0.33%, pH 9.6, average grain diameter are 20 ~ 30nm.
4. a kind of preparation method of super-hydrophobic JS water-repellent paint according to claim 1, it is characterised in that: the soft monomer For one or more of butyl acrylate, ethyl acrylate and Isooctyl acrylate monomer；The hard monomer is styrene, methyl-prop One or more of e pioic acid methyl ester, vinyl acetate, acrylonitrile, methyl acrylate, acrylic acid and acrylamide；The functionality Monomer is hydroxymethyl acrylamide and acrylic acid；The initiator is ammonium persulfate or potassium peroxydisulfate；The emulsifier is 12 One of sodium alkyl sulfate, polyoxyethylene carboxylate, alkyl phenol polyethoxy ether ammonium sulfate, SPAN series and TWEEN Series Or it is several.
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CN106866098A (en) * 2017-02-23 2017-06-20 南京瑞派建材科技有限公司 A kind of novel rigid geopolymer enhancing water-repellent paint and preparation method thereof
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