CN110256011A - A kind of polymer cement waterproof paint and preparation method thereof - Google Patents
A kind of polymer cement waterproof paint and preparation method thereof Download PDFInfo
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- CN110256011A CN110256011A CN201910556592.8A CN201910556592A CN110256011A CN 110256011 A CN110256011 A CN 110256011A CN 201910556592 A CN201910556592 A CN 201910556592A CN 110256011 A CN110256011 A CN 110256011A
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to technical fields, propose a kind of polymer cement waterproof paint and preparation method thereof, it is grouped as by the group of following parts by weight: 16~25 parts of cement, 13~20 parts of dicalcium powder, 7~15 parts of silica flour, 33~45 parts of styrene-acrylic emulsion, 4~10 parts of water, 3~7 parts of cationic starch, 4.5~6.3 parts of compatilizer, 0.5~1 part of poly-N-isopropyl acrylamide, 0.05~0.5 part of dimethyl silicone polymer, 1.5~3 parts of retarder, 0.3~1.2 part of plasticizer, 0.01~0.1 part of preservative, compatilizer is two (lauramide glutamine) Sodium lysinates, the mixture that poloxamer and polyethylene glycol mass ratio are 1:5:3, the mixture that retarder is carboxymethyl chitosan and sucrose stearate mass ratio is 2:1, its preparation side The mixed liquor that ultrasonic disperse in the mixed liquor of dry blend addition half volume first will be added first to residual volume after mixing in method, is uniformly mixed.Through the above technical solutions, solving the problems, such as that polymer cement waterproof paint tensile strength and elongation at break be not high in the prior art.
Description
Technical field
The invention belongs to waterproof material technical field, it is related to a kind of polymer cement waterproof paint and preparation method thereof.
Background technique
Polymer cement waterproof paint (JS water-repellent paint) be by synthesising macromolecule copolymer lotion (such as polyacrylate,
Polyvinyl acetate, SBR emulsion etc.) and various additives optimum organization made of liquid material and matched powder (by special type
Cement, silica flour and various additives composition) the bi-component water-repellent paint that is combined, two components stir at the scene uniformly,
Matrix surface is brushed or be sprayed to fine and smooth slurry, and flexible, high-strength waterproof coating can be formed after solidification, using water as carrier, gram
The drawbacks of having taken pitch, tar, organic solvent type waterproof material pollution environment, be it is a kind of it is nontoxic, can wet construction, construction letter
Just new green environment protection waterproof material, is applicable not only to various waterproofing works, it may also be used for repairing work, mixes at interface processing
Solidifying soil protection, decoration, sealing structure etc..
Polymer cement waterproof paint is mainly using organic polymeric emulsions and inorganic cement and filler as main body, this two
Poor compatibility limits the further promotion of its comprehensive performance between person, it is difficult to obtain tensile strength and elongation at break is equal
Higher film.Common polymer cement waterproof paint crack resistance is poor, is usually opened because base-layer contraction deforms.Cause
This, the shortcomings that how improving traditional polymer cement waterproof paint is that it is promoted and answers to obtain the promotion of more high combination property
For broader field, meet industrial production demand urgent problem to be solved.
Summary of the invention
The present invention proposes a kind of polymer cement waterproof paint and preparation method thereof, solves polymer water in the prior art
Mud water-repellent paint tensile strength and the not high problem of elongation at break.
The technical scheme of the present invention is realized as follows:
A kind of polymer cement waterproof paint is grouped as by the group of following parts by weight:
16~25 parts of cement, 13~20 parts of dicalcium powder, 7~15 parts of silica flour, 33~45 parts of styrene-acrylic emulsion, 4~10 parts of water,
3~7 parts of cationic starch, 4.5~6.3 parts of compatilizer, 0.5~1 part of poly-N-isopropyl acrylamide, dimethyl silicone polymer
0.05~0.5 part, 1.5~3 parts of retarder, 0.3~1.2 part of plasticizer, 0.01~0.1 part of preservative.
As further technical solution, it is grouped as by the group of following parts by weight:
20 parts of cement, 17 parts of dicalcium powder, 12 parts of silica flour, 40 parts of styrene-acrylic emulsion, 7.5 parts of water, 5 parts of cationic starch, phase
5.4 parts of agent of appearance, 0.7 part of poly-N-isopropyl acrylamide, 0.3 part of dimethyl silicone polymer, 2.1 parts of retarder, plasticizer 0.7
Part, 0.05 part of preservative
As further technical solution, the compatilizer is two (lauramide glutamine) Sodium lysinates, Bo Luosha
The mixture that nurse and polyethylene glycol mass ratio are 1:5:3.
As further technical solution, the average molecular weight of the polyethylene glycol is 760~840.
As further technical solution, the cement is 425# white cement, and the coarse whiting Powder Particle Size is 800 mesh, described
Quartzy Powder Particle Size is 120~400 mesh.
As further technical solution, the retarder is carboxymethyl chitosan and sucrose stearate mass ratio is 2:
1 mixture.
As further technical solution, the plasticizer is dioctyl phthalate.
As further technical solution, the preservative is benzisothiazole-3-ketone.
A kind of preparation method of polymer cement waterproof paint, comprising the following steps:
S1. according to a kind of formula of above-mentioned polymer cement waterproof paint, it is spare to weigh each component；
S2. it is milled after mixing cement, dicalcium powder, silica flour, crosses 400 meshes, obtain dry blend；
S3. styrene-acrylic emulsion, cationic starch, poly-N-isopropyl acrylamide are sequentially added in water, is uniformly mixed, obtains
Mixed liquor；
S4. the mixed liquor for taking the step S3 of half volume to obtain is added compatilizer and is uniformly mixed, adds step S2 and obtain
Dry blend, obtained after ultrasonic mixing is uniform just mixing；
S5. the mixed liquor that the step S3 of residual volume is obtained is added into the first mixing that step S4 is obtained, stirs evenly, then
Retarder, dimethyl silicone polymer, plasticizer and preservative are sequentially added, grinding discharging, obtains a kind of polymerization after mixing
Object cement waterproof paint.
As further technical solution, mixing speed is 1200~1500r/min in step S5, mixing time is 20~
25min。
It the working principle of the invention and has the beneficial effect that
1, in the present invention, the raw material and preparation method of specific proportion are all that inventor pays a large amount of painstaking effort researchs and obtains,
Each component in entire formula cooperates, and plays the role of being mutually improved and cooperate with, so that the polymer cement of preparation
Water-repellent paint not only has good tensile property, and tensile strength is up to 5.8MPa, and elongation at break is up to 658%, and not
The comprehensive performances such as water penetration, impermeability, low temperature flexibility, caking property are significantly increased, and adhesion strength is up to 2.9MPa,
0.3Map, 90min are waterproof, and impermeability is up to 2.2MPa, and low temperature flexibility is more preferable, and -30 DEG C of flawlesses efficiently solve existing skill
Polymer cement waterproof paint is in terms of tensile strength and elongation at break the problem of existing defects in art.
2, in the present invention, two (lauramide glutamine) Sodium lysinate, poloxamer and polyethylene glycol are added in formula
Mass ratio is the mixture of 1:5:3 as compatilizer, significantly improves tensile property, waterproofness, the low temperature flexibility of water-repellent paint
And impermeability.Two (lauramide glutamine) Sodium lysinates, poloxamer and polyethylene glycol cooperation, significantly improve by water
The interface compatibility of powder and styrene-acrylic emulsion that mud, dicalcium powder and quartz sand mix, two (lauramide glutamine) rely
Propylhomoserin sodium has double-hydrophilic, double hydrophobicitys, and surface tension is very low, can penetrate into powder and styrene-acrylic emulsion, husky with pool Lip river
The mutual compatibility of nurse, polyethylene glycol, so that powder preferably disperses in styrene-acrylic emulsion, to improve the draftability of water-repellent paint
Energy and adhesive property, with the progress of cement hydration process, generate a large amount of heat in water-repellent paint use process in system
Amount, polyethylene glycol have lower fusing point, polyethylene glycol melted by heat, with two (lauramide glutamine) Sodium lysinates with match
Close, on the one hand increase system viscosity, improve the consistency of system, on the other hand, coating surface formed one layer it is fine and close
Oil film, to further improve the waterproofness and impermeability of water-repellent paint.
3, carboxymethyl chitosan and sucrose stearate mass ratio are added in the present invention, in formula to make for the mixture of 2:1
For retarder, tensile property, waterproofness and the impermeability of water-repellent paint are significantly improved.Carboxymethyl chitosan and sucrose stearate
Ester compatibility is adsorbed on cement particle surface and forms one layer of fine and close protective cover, changes the electric double layer knot of cement particle surface
Structure is suppressed the process of cement granules adsorption moisture and hydration reaction, improve water-repellent paint can application property, further
Improve adhesive property, tensile property, waterproofness and the impermeability of water-repellent paint.
4, in the present invention, cationic starch, cationic starch and poly-N-isopropyl acrylamide, carboxymethyl are added in formula
Chitosan cooperates, and for the cation in molecular structure with the anion binding in cement, the bonding for significantly improving water-repellent paint is strong
Degree, meanwhile, with the mutual compatibilities of component other in formula, the film forming of water-repellent paint is significantly improved, waterproof is further improved
The waterproofness and impermeability of coating.
5, in the present invention, first dry blend is added in the mixed liquor of half volume in preparation step and is added after mixing
The mixed liquor of residual volume significantly improves the comprehensive performance of water-repellent paint.A halfbody first is added in dry blend in preparation step
Ultrasonic disperse adds the mixed liquor of residual volume after mixing in long-pending mixed liquor, so that by cement, dicalcium powder and quartz
The powder that sand mixes is in the mixed liquor mixed by styrene-acrylic emulsion, cationic starch, poly-N-isopropyl acrylamide
That disperses is more uniform, and the powder for effectively preventing occurring in powder, liquid material mixed process is not soaked sufficiently and uniting makes
Unevenly there is the phenomenon that slurry spilling in mixing, and this improves the comprehensive performances of coating.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1
A kind of polymer cement waterproof paint is grouped as by the group of following parts by weight:
16 parts of cement, 13 parts of dicalcium powder, 7 parts of silica flour, 33 parts of styrene-acrylic emulsion, 4 parts of water, 3 parts of cationic starch, compatilizer
4.5 parts, 0.5 part of poly-N-isopropyl acrylamide, 0.05 part of dimethyl silicone polymer, 1.5 parts of retarder, 0.3 part of plasticizer, prevent
0.01 part of rotten agent,
Wherein, cement is 425# white cement, and coarse whiting Powder Particle Size is 800 mesh, and quartzy Powder Particle Size is 120~400 mesh, compatilizer
The mixture for being 1:5:3 for two (lauramide glutamine) Sodium lysinates, poloxamer and polyethylene glycol mass ratio, poly- second two
The average molecular weight of alcohol is 760~840, the mixing that retarder is carboxymethyl chitosan and sucrose stearate mass ratio is 2:1
Object, plasticizer are dioctyl phthalate, and preservative is benzisothiazole-3-ketone,
Preparation method, comprising the following steps:
S1. according to above-mentioned formula, it is spare to weigh each component；
S2. it is milled after mixing cement, dicalcium powder, silica flour, crosses 400 meshes, obtain dry blend；
S3. styrene-acrylic emulsion, cationic starch, poly-N-isopropyl acrylamide are sequentially added in water, is uniformly mixed, obtains
Mixed liquor；
S4. the mixed liquor for taking the step S3 of half volume to obtain is added compatilizer and is uniformly mixed, adds step S2 and obtain
Dry blend, obtained after ultrasonic mixing is uniform just mixing；
S5. the obtained mixed liquor of step S3 of residual volume is added into the first mixing that step S4 is obtained, 1200~
20~25min is stirred under the speed of 1500r/min to being uniformly mixed, and sequentially adds retarder, dimethyl silicone polymer, plasticising
Agent and preservative, grinding discharging, obtains a kind of polymer cement waterproof paint after mixing.
Embodiment 2
A kind of polymer cement waterproof paint is grouped as by the group of following parts by weight:
It is 25 parts of cement, 20 parts of dicalcium powder, 15 parts of silica flour, 45 parts of styrene-acrylic emulsion, 10 parts of water, 7 parts of cationic starch, compatible
6.3 parts of agent, 1 part of poly-N-isopropyl acrylamide, 0.5 part of dimethyl silicone polymer, 3 parts of retarder, 1.2 parts of plasticizer, anti-corrosion
0.1 part of agent,
Wherein, cement is 425# white cement, and coarse whiting Powder Particle Size is 800 mesh, and quartzy Powder Particle Size is 120~400 mesh, compatilizer
The mixture for being 1:5:3 for two (lauramide glutamine) Sodium lysinates, poloxamer and polyethylene glycol mass ratio, poly- second two
The average molecular weight of alcohol is 760~840, the mixing that retarder is carboxymethyl chitosan and sucrose stearate mass ratio is 2:1
Object, plasticizer are dioctyl phthalate, and preservative is benzisothiazole-3-ketone,
Preparation method is the same as embodiment 1.
Embodiment 3
A kind of polymer cement waterproof paint is grouped as by the group of following parts by weight:
It is 18 parts of cement, 15 parts of dicalcium powder, 10 parts of silica flour, 38 parts of styrene-acrylic emulsion, 6 parts of water, 4 parts of cationic starch, compatible
5.1 parts of agent, 0.6 part of poly-N-isopropyl acrylamide, 0.2 part of dimethyl silicone polymer, 1.8 parts of retarder, 0.5 part of plasticizer,
0.03 part of preservative,
Wherein, cement is 425# white cement, and coarse whiting Powder Particle Size is 800 mesh, and quartzy Powder Particle Size is 120~400 mesh, compatilizer
The mixture for being 1:5:3 for two (lauramide glutamine) Sodium lysinates, poloxamer and polyethylene glycol mass ratio, poly- second two
The average molecular weight of alcohol is 760~840, the mixing that retarder is carboxymethyl chitosan and sucrose stearate mass ratio is 2:1
Object, plasticizer are dioctyl phthalate, and preservative is benzisothiazole-3-ketone,
Preparation method is the same as embodiment 1.
Embodiment 4
A kind of polymer cement waterproof paint is grouped as by the group of following parts by weight:
It is 22 parts of cement, 18 parts of dicalcium powder, 13 parts of silica flour, 42 parts of styrene-acrylic emulsion, 8 parts of water, 6 parts of cationic starch, compatible
5.7 parts of agent, 0.8 part of poly-N-isopropyl acrylamide, 0.35 part of dimethyl silicone polymer, 2.5 parts of retarder, 0.9 part of plasticizer,
0.07 part of preservative,
Wherein, cement is 425# white cement, and coarse whiting Powder Particle Size is 800 mesh, and quartzy Powder Particle Size is 120~400 mesh, compatilizer
The mixture for being 1:5:3 for two (lauramide glutamine) Sodium lysinates, poloxamer and polyethylene glycol mass ratio, poly- second two
The average molecular weight of alcohol is 760~840, the mixing that retarder is carboxymethyl chitosan and sucrose stearate mass ratio is 2:1
Object, plasticizer are dioctyl phthalate, and preservative is benzisothiazole-3-ketone,
Preparation method is the same as embodiment 1.
Embodiment 5
A kind of polymer cement waterproof paint is grouped as by the group of following parts by weight:
20 parts of cement, 17 parts of dicalcium powder, 12 parts of silica flour, 40 parts of styrene-acrylic emulsion, 7.5 parts of water, 5 parts of cationic starch, phase
5.4 parts of agent of appearance, 0.7 part of poly-N-isopropyl acrylamide, 0.3 part of dimethyl silicone polymer, 2.1 parts of retarder, plasticizer 0.7
Part, 0.05 part of preservative,
Wherein, cement is 425# white cement, and coarse whiting Powder Particle Size is 800 mesh, and quartzy Powder Particle Size is 120~400 mesh, compatilizer
The mixture for being 1:5:3 for two (lauramide glutamine) Sodium lysinates, poloxamer and polyethylene glycol mass ratio, poly- second two
The average molecular weight of alcohol is 760~840, the mixing that retarder is carboxymethyl chitosan and sucrose stearate mass ratio is 2:1
Object, plasticizer are dioctyl phthalate, and preservative is benzisothiazole-3-ketone,
Preparation method is the same as embodiment 1.
Comparative example 1
A kind of polymer cement waterproof paint is grouped as by the group of following parts by weight:
20 parts of cement, 17 parts of dicalcium powder, 12 parts of silica flour, 40 parts of styrene-acrylic emulsion, 7.5 parts of water, 5 parts of cationic starch, gather
0.7 part of n-isopropyl acrylamide, 0.3 part of dimethyl silicone polymer, 2.1 parts of retarder, 0.7 part of plasticizer, preservative 0.05
Part,
Wherein, cement is 425# white cement, and coarse whiting Powder Particle Size is 800 mesh, and quartzy Powder Particle Size is 120~400 mesh, retarder
The mixture for being 2:1 for carboxymethyl chitosan and sucrose stearate mass ratio, plasticizer is dioctyl phthalate, anti-corrosion
Agent is benzisothiazole-3-ketone,
Corresponding in preparation method to delete compatilizer in step S4, remaining preparation step is the same as embodiment 1.
Comparative example 2
A kind of polymer cement waterproof paint is grouped as by the group of following parts by weight:
20 parts of cement, 17 parts of dicalcium powder, 12 parts of silica flour, 40 parts of styrene-acrylic emulsion, 7.5 parts of water, 5 parts of cationic starch, phase
5.4 parts of agent of appearance, 0.7 part of poly-N-isopropyl acrylamide, 0.3 part of dimethyl silicone polymer, 0.7 part of plasticizer, preservative 0.05
Part,
Wherein, cement is 425# white cement, and coarse whiting Powder Particle Size is 800 mesh, and quartzy Powder Particle Size is 120~400 mesh, compatilizer
The mixture for being 1:5:3 for two (lauramide glutamine) Sodium lysinates, poloxamer and polyethylene glycol mass ratio, poly- second two
The average molecular weight of alcohol is 760~840, and plasticizer is dioctyl phthalate, and preservative is benzisothiazole-3-ketone,
Corresponding in preparation method to delete retarder in step S5, remaining preparation step is the same as embodiment 1.
Comparative example 3
A kind of polymer cement waterproof paint is grouped as by the group of following parts by weight:
20 parts of cement, 17 parts of dicalcium powder, 12 parts of silica flour, 40 parts of styrene-acrylic emulsion, 7.5 parts of water, 5 parts of cationic starch, phase
5.4 parts of agent of appearance, 0.7 part of poly-N-isopropyl acrylamide, 0.3 part of dimethyl silicone polymer, 2.1 parts of retarder, plasticizer 0.7
Part, 0.05 part of preservative,
Wherein, cement is 425# white cement, and coarse whiting Powder Particle Size is 800 mesh, and quartzy Powder Particle Size is 120~400 mesh, compatilizer
The mixture for being 1:5:3 for two (lauramide glutamine) Sodium lysinates, poloxamer and polyethylene glycol mass ratio, poly- second two
The average molecular weight of alcohol is 760~840, the mixing that retarder is carboxymethyl chitosan and sucrose stearate mass ratio is 2:1
Object, plasticizer are dioctyl phthalate, and preservative is benzisothiazole-3-ketone,
Preparation method includes the following steps:
S1. according to above-mentioned formula, it is spare to weigh each component；
S2. it is milled after mixing cement, dicalcium powder, silica flour, crosses 400 meshes, obtain dry blend；
S3. styrene-acrylic emulsion, cationic starch, poly-N-isopropyl acrylamide are sequentially added in water, is uniformly mixed, obtains
Mixed liquor；
S4. the mixed liquor obtained to step S3 is added compatilizer and is uniformly mixed, adds the dry blend that step S2 is obtained,
Mixture is obtained after ultrasonic mixing is uniform；
S5. retarder, dimethyl silicone polymer, plasticizer and anti-corrosion are sequentially added in the mixture obtained to step S4
Agent, grinding discharging, obtains a kind of polymer cement waterproof paint after mixing.
Each component parts by weight are seen below in the formula of polymer cement waterproof paint in Examples 1 to 5 and comparative example 1~3
Table:
Each component parts by weight in the formula of polymer cement waterproof paint in 1 Examples 1 to 5 of table and comparative example 1~3
Note :-indicate no this item
The polymer cement waterproof paint prepared to Examples 1 to 5 and comparative example 1~3 performs the following performance tests:
1, solid content: according to the 5th chapter of GB/T 16777-2008 " Test methods for building waterproof coatings " fixed measurement to
The solid content of sample, drying temperature are (105 ± 2) DEG C；
2, it tensile property: is carried out according to the regulation of 9.2.1 in GB/T 16777-2008 " Test methods for building waterproof coatings "
Test, tensile speed 200mm/min, the tensile strength and elongation at break of test sample；
3, low temperature flexibility: according in 7.4.2 sample and test material preparation in GB/T 23445-2009 " polymer cement paint "
Defined method prepares film sample with sample to be tested, according in GB/T16777-2008 " Test methods for building waterproof coatings "
13.2.1 regulation is tested, diameter of the rod 10mm；
4, adhesion strength: according to the regulation in GB/T16777-2008 " Test methods for building waterproof coatings ", using stretching
Testing machine carries out tension test, and tensile speed is (5 ± 1) mm/min, measures the adhesion strength of sample；
5, it impermeability: is carried out according to the regulation of the 15th chapter in GB/T16777-2008 " Test methods for building waterproof coatings "
Test, test pressure 0.3MPa keep pressure 30min；
6, impervious: according to the rule of appendix A Standard Test Method for Permeation Resistance method in GB/T 23445-2009 " polymer cement paint "
Determine the impermeability of test sample；
Test result see the table below:
Polymer cement waterproof paint the performance test results prepared by 2 Examples 1 to 5 of table and comparative example 1~3
As can be seen from the above table, the embodiment of the present invention 1~5 prepare polymer cement waterproof paint tensile strength and
Elongation at break significantly improves, and tensile strength is up to 5.8MPa, and elongation at break is up to 658%, and adhesive property is good, adhesion strength
Up to 2.9MPa, impermeability is good, and in 0.3Map, 90min is waterproof, and impervious good, impermeability is up to 2.2MPa, low temperature flexibility
More preferably, -30 DEG C of flawlesses, illustrating polymer cement waterproof paint prepared by the present invention not only has good tensile property, draws
It stretches intensity and elongation at break significantly improves, and the comprehensive performances such as impermeability, impermeability, low temperature flexibility, caking property are aobvious
Write improve, efficiently solve in the prior art polymer cement waterproof paint in terms of tensile strength and elongation at break exist lack
Sunken problem.Wherein, the raw material proportioning of embodiment 5 and preparation method are the present invention more preferably technical solutions relatively, obtained poly-
The performance for closing object cement waterproof paint is best.
Compared with polymer cement waterproof paint prepared by embodiment 5, the tensile property of water-repellent paint prepared by comparative example 1
Bad, tensile strength and elongation at break are low, and low temperature flexibility, waterproofness and impervious page are relatively weaker, the waterproof of comparative example 1
Be not added with compatilizer in the formula of coating, illustrate (lauramide glutamine) Sodium lysinate two in compatilizer, poloxamer and
The addition of polyethylene glycol significantly improves tensile property, waterproofness, low temperature flexibility and the impermeability of water-repellent paint, this is because,
Two (lauramide glutamine) Sodium lysinates, poloxamer and polyethylene glycol cooperation, significantly improve by cement, dicalcium powder and
The interface compatibility of powder and styrene-acrylic emulsion that quartz sand mixes, two (lauramide glutamine) Sodium lysinates have parents
Aqueous, double hydrophobicitys, surface tension is very low, can penetrate into powder and styrene-acrylic emulsion, with poloxamer, polyethylene glycol phase
Mutual compatibility, so that powder preferably disperses in styrene-acrylic emulsion, so that the tensile property and adhesive property of water-repellent paint are improved,
In water-repellent paint use process, with the progress of cement hydration process, a large amount of heat is generated in system, polyethylene glycol has
On the one hand lower fusing point, polyethylene glycol melted by heat are increased with two (lauramide glutamine) Sodium lysinates and cooperation
System viscosity improves the consistency of system, on the other hand, one layer of fine and close oil film is formed in coating surface, thus further
Improve the waterproofness and impermeability of water-repellent paint.
Compared with polymer cement waterproof paint prepared by embodiment 5, the draftability of water-repellent paint prepared by comparative example 2
Energy, waterproofness and impermeability are relatively weaker, are not added with retarder in the formula of the water-repellent paint of comparative example 2, illustrate retarder
The addition of middle carboxymethyl chitosan and sucrose stearate significantly improves the tensile property of water-repellent paint, waterproofness and impervious
Property, this is because, carboxymethyl chitosan and sucrose stearate compatibility, are adsorbed on cement particle surface and form one layer of fine and close suction
Membrane layer changes the double electrical layers of cement particle surface, make cement granules adsorption moisture process and hydration reaction by
Inhibit, improve water-repellent paint can application property, further improve the adhesive property, tensile property, waterproofness of water-repellent paint
And impermeability.
Compared with polymer cement waterproof paint prepared by embodiment 5, the draftability of water-repellent paint prepared by comparative example 3
The comprehensive performances such as energy, low temperature flexibility, adhesive property, waterproofness and impermeability are relatively weaker, the water-repellent paint of comparative example 3
Dry blend and all mixed liquors directly mix in preparation method, rather than substep mixes, and illustrates in preparation step of the invention
First dry blend is added in the mixed liquor of half volume and adds the mixed liquor of residual volume after mixing, significantly improved anti-
The comprehensive performance of water paint, this is because ultrasonic disperse in the mixed liquor of half volume first is added in dry blend in preparation step
Add the mixed liquor of residual volume after mixing so that the powder mixed by cement, dicalcium powder and quartz sand by
That disperses in the mixed liquor that styrene-acrylic emulsion, cationic starch, poly-N-isopropyl acrylamide mix is more uniform, effectively keeps away
The powder for having exempted to occur in powder, liquid material mixed process is not soaked sufficiently and uniting makes mixing slurry spilling unevenly occur
The phenomenon that, this improves the comprehensive performances of coating.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of polymer cement waterproof paint, which is characterized in that be grouped as by the group of following parts by weight:
16~25 parts of cement, 13~20 parts of dicalcium powder, 7~15 parts of silica flour, 33~45 parts of styrene-acrylic emulsion, 4~10 parts of water, sun from
3~7 parts of sub- starch, 4.5~6.3 parts of compatilizer, 0.5~1 part of poly-N-isopropyl acrylamide, dimethyl silicone polymer 0.05~
0.5 part, 1.5~3 parts of retarder, 0.3~1.2 part of plasticizer, 0.01~0.1 part of preservative.
2. a kind of polymer cement waterproof paint according to claim 1, which is characterized in that by the component of following parts by weight
Composition:
20 parts of cement, 17 parts of dicalcium powder, 12 parts of silica flour, 40 parts of styrene-acrylic emulsion, 7.5 parts of water, 5 parts of cationic starch, compatilizer
5.4 parts, 0.7 part of poly-N-isopropyl acrylamide, 0.3 part of dimethyl silicone polymer, 2.1 parts of retarder, 0.7 part of plasticizer, prevent
0.05 part of rotten agent.
3. a kind of polymer cement waterproof paint according to claim 1 or 2, which is characterized in that the compatilizer is two
(lauramide glutamine) Sodium lysinate, poloxamer and polyethylene glycol mass ratio are the mixture of 1:5:3.
4. a kind of polymer cement waterproof paint according to claim 3, which is characterized in that the polyethylene glycol is averaged
Molecular weight is 760~840.
5. a kind of polymer cement waterproof paint according to claim 4, which is characterized in that the cement is 425# plain boiled water
Mud, the coarse whiting Powder Particle Size are 800 mesh, and the quartz Powder Particle Size is 120~400 mesh.
6. a kind of polymer cement waterproof paint according to claim 4, which is characterized in that the retarder is carboxymethyl
The mixture that chitosan and sucrose stearate mass ratio are 2:1.
7. a kind of polymer cement waterproof paint according to claim 4, which is characterized in that the plasticizer is adjacent benzene two
Formic acid dioctyl ester.
8. a kind of polymer cement waterproof paint according to claim 4, which is characterized in that the preservative is benzisoxa
Thiazoline -3- ketone.
9. a kind of preparation method of polymer cement waterproof paint, which comprises the following steps:
S1. a kind of formula of polymer cement waterproof paint described in any one according to claim 1~8, weighs each component
It is spare；
S2. it is milled after mixing cement, dicalcium powder, silica flour, crosses 400 meshes, obtain dry blend；
S3. styrene-acrylic emulsion, cationic starch, poly-N-isopropyl acrylamide are sequentially added in water, is uniformly mixed, is mixed
Liquid；
S4. the mixed liquor for taking the step S3 of half volume to obtain is added compatilizer and is uniformly mixed, and add that step S2 obtains is dry
Mixing obtains just mixing after ultrasonic mixing is uniform；
S5. the mixed liquor that the step S3 of residual volume is obtained is added into the first mixing that step S4 is obtained, stirs evenly, then successively
Retarder, dimethyl silicone polymer, plasticizer and preservative is added, grinding discharging, obtains a kind of polymer water after mixing
Mud water-repellent paint.
10. a kind of preparation method of polymer cement waterproof paint according to claim 9, which is characterized in that step S5
Middle mixing speed is 1200~1500r/min, and mixing time is 20~25min.
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| CN112029344A (en) * | 2020-09-10 | 2020-12-04 | 深圳港创建材股份有限公司 | Polymer cement-based coating with good compatibility and preparation method and application thereof |
| CN112625478A (en) * | 2020-12-16 | 2021-04-09 | 成都湛怡峪涂料科技有限公司 | Preparation method of durable cement-based waterproof coating |
| CN114276043A (en) * | 2021-12-31 | 2022-04-05 | 湖州绿色新材股份有限公司 | Polycarboxylate superplasticizer and preparation method thereof |
| CN114854260A (en) * | 2022-05-20 | 2022-08-05 | 广东家实多集团有限公司 | Cement-based polymer waterproof coating |
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| CN104177007A (en) * | 2014-08-11 | 2014-12-03 | 上海应用技术学院 | Retarding self-closing polymer cement waterproof coating |
| CN104230262A (en) * | 2014-08-29 | 2014-12-24 | 黄艳 | Environment-friendly coating for architectural glass |
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| CN110256011B (en) | 2021-09-21 |
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