CN107311568B - A kind of hydrophobic type polymer cement waterproof paint and preparation method thereof - Google Patents
A kind of hydrophobic type polymer cement waterproof paint and preparation method thereof Download PDFInfo
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- CN107311568B CN107311568B CN201710575128.4A CN201710575128A CN107311568B CN 107311568 B CN107311568 B CN 107311568B CN 201710575128 A CN201710575128 A CN 201710575128A CN 107311568 B CN107311568 B CN 107311568B
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- powder
- polymer cement
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- waterproof paint
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Classifications
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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
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- 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)
Abstract
The invention discloses a kind of hydrophobic type polymer cement waterproof paints, which is characterized in that is made of liquid material and powder, the powder includes following components, by weight percentage: cement 40~60%；The coarse whiting 25~50% of 200~400 mesh；The wollastonite powder 6~10% of 1250 mesh；Tackifier 4~8%；Hydrophobic powder 0.4~0.8%；Water-reducing agent 0.2~0.5%；The liquid material includes following components, by weight percentage: macromolecule emulsion 80~95%；Hydrophober 2~5%；Stabilizer 0.1~0.3%；Defoaming agent 0.1~0.4%；Preservative 0.1~0.3%；Surplus is water.The liquid material and powder are by 10:(15~20) weight ratio meter is uniformly mixed and obtains the hydrophobic type polymer cement waterproof paint.Indices of the present invention are able to satisfy II type coating index request of GB/T 23445-2009, have the performances such as good water-alkali resistance, UV resistant, bonding.
Description
Technical field
The invention belongs to waterproof material technical fields, and in particular to a kind of hydrophobic type polymer cement waterproof paint.
Background technique
Building water-proof paint refers to coated on building structure surface, by the water proof anti-seepage function of itself, avoid building by
A kind of functional construction material of water enchroachment (invasion) evil.Currently, commercially available most commonly used building water-proof paint include polyurethane water-proof paint,
Polymer cement waterproof paint etc., polymer cement waterproof paint because its aqueous, environmental protective, comprehensive cost performance height are received by the market,
GB/T23445-2009 " polymer cement waterproof paint " standard of execution is divided into I type, II according to the difference of physical and mechanical property
Three kinds of type and III type.
Polymer cement waterproof paint is grouped as by liquid material component and powder group, and usual liquid material main component is ethylene-vinegar
Sour vac emulsion or acrylic acid ester emulsion, powder main component are cement, and liquid material is uniformly mixed according to about certain than column with powder
After become water-repellent paint.However, there are problems for the polymer cement waterproof paint in practical application after discovery film forming:
(1) film water-alkali resistance is poor, and water imbibition is strong, and coating strength, bonding force sharply decline, and drum has easily occurred, has peeled off；(2) film
Resistance to ag(e)ing is poor, and after the long-term illumination of film, intensity, elongation percentage are greatly reduced, or even cracking.
To find out its cause, these problems and coating composition, characteristic are in relation to (1) hydrophily of film.Polymer cement is anti-at present
The main film forming matter of water paint is ethene-vinyl acetate lotion or acrylic acid ester emulsion, and subsidiary film forming matter is cement, these materials
It is in itself hydrophilic material after drying, being not added in coating in addition reduces hydrophilic ingredient, leads to dry coating water imbibition
Extremely strong, 10% or so water absorption rate causes coating waterproofing performance to be greatly reduced；(2) main film forming matter degradation or resistance to ag(e)ing are poor.
Ethene-vinyl acetate lotion is made, molecular formula (C by ethylene (E) and vinyl acetate (VA) copolymerization2H4)x.(C4H6O2)y, from
Molecular formula can be seen that, is a kind of ester structure, is also easy to produce in strong basicity environment in molecular formula containing a large amount of ethoxy group
Hydrolysis causes the hydrophily of molecule to further enhance, and water resistance reduces；Used in polymer cement waterproof paint
Acrylic emulsion is generally styrene-acrylic emulsion, is synthesized by styrene with acrylic monomers, is bonded between monomer with C-C, and C-C bond energy is
356kj/mol, the bond energy easy fracture, macromolecule under action of ultraviolet light are degraded, and show as the reduction of film tensile property, even
Cracking.In practice, in order to reduce these disadvantages, a certain amount of plasticizer (such as DBP, DOP) is added in coating, by reducing molecule
Crystallinity, improve flexibility, impact resistance and be improved.But plasticizer is small-molecule substance, there is migration, a period of time
Afterwards, the weakness of film still embodies out.
To solve the disadvantages of polymer cement waterproof paint water-alkali resistance is poor, resistance to ag(e)ing is weak, optimize waterproof performance, completely
Full border waterproof needs, and the present invention sets about from the main film forming matter of coating, is aided with a variety of auxiliary agents, develops excellent combination property
Novel polymer cement waterproof paint.
Summary of the invention
The object of the present invention is to provide a kind of hydrophobic type polymer cement waterproof paints and preparation method thereof, have good
The performances such as water-alkali resistance, UV resistant, bonding.
For achieving the above object, present invention employs following technical solutions:
A kind of hydrophobic type polymer cement waterproof paint, which is characterized in that be made of liquid material and powder, the powder includes
Following components, by weight percentage:
The liquid material includes following components, by weight percentage:
The liquid material and powder are by 10:(15~20) weight ratio meter is uniformly mixed and obtains the hydrophobic type polymer cement
Water-repellent paint.
Further, the cement is ordinary portland cement, marked as P.O32.5, P.O42.5 or P.O52.5
One of or it is a variety of.
Further, the tackifier are powdered potassium silicate, and fineness is greater than 100 mesh.
Further, the hydrophobic powder is organosilicon hydrophobic powder, such as DOW CORNING SHP-50.
Further, the water-reducing agent is one of powdered polycarboxylate water-reducer, melamine water-reducing agent or a variety of.
Further, the macromolecule emulsion is silicone acrylic emulsion.
Further, the hydrophober is dimethicone, and viscosity is 100~800mPa.s.
Further, the stabilizer is alkyl phenol polyoxyethylene ether emulsifier, HLB value > 8, such as OP-10 emulsifier.
The HLB value is hydrophilic lipophilic balance.
Further, the defoaming agent is organic silicon defoaming agent, such as SPA202, SN345.
Further, the preservative is isothiazoline -3- ketone preservative, such as China Tech 981.
The preparation method of hydrophobic type polymer cement waterproof paint as described above, which comprises the steps of:
(1) preparation of powder: each component is mixed by above-mentioned proportion, is stirred evenly；
(2) preparation of liquid material: being first added stirred tank for macromolecule emulsion, hydrophober, stabilizer by above-mentioned proportion, is turning
Speed is to stir 1 hour or more under 500~800r/min, and other ingredients are then added, stir evenly；
(3) then by the liquid material obtained and powder by 10:(15~20) weight ratio meter be uniformly mixed be obtain described in
Hydrophobic type polymer cement waterproof paint.
Working principle of the invention is as follows:
Before discussing the working principle of the invention, several important source materials in hydrophobic type polymer cement waterproof paint are first stated
Main component transitivity, it is as shown in table 1 below:
Table 1 participates in the ingredient transitivity of each raw material of chemical reaction
Silicone acrylic emulsion is to coat the organic silicon monomer containing unsaturated bond by nucleocapsid with acrylic monomer to polymerize work
The lotion that skill is polymerized, it has organosilicon fire-resistant, weatherability, chemical-resistant, and hydrophobic, surface can be low not easy to pollute
It is the environment-friendly type building lotion of a kind of high durable, water-alkali resistance with the characteristics such as flexibility, the adhesion of acrylic resin,
As it can be seen that as long as the silicone acrylic emulsion as main film forming matter can coat the substance of the non-hydrophobicity of other in coating, then waterproof applies
Film has hydrophobicity, and film does not absorb water or water absorption rate is small, then the water-alkali resistance performance of film is improved；Coating application
When, it is difficult to the defects of avoiding tiny eyelet, these eyelets are also that water penetrates into the channel inside film, are added in coating thus
Hydrophobic powder, hydrophobic powder can be enriched on eyelet periphery, so that the hydrophobic of eyelet periphery or inside is more powerful, shipwreck is to penetrate into；
Dimethicone is added, main two aspects effect can be used as plasticizer as the dimethicone of small molecule first, and due to
Main film forming matter contains silicon and makes dimethicone not easy to migrate, secondly small (the conventional plasticizers DBP of dimethicone surface tension
Surface tension 37.5mN/m), it is same to provide film excellent hydrophobicity performance.
As described above, ginkgo seeds difference be primarily due to main film forming matter resistance to ag(e)ing it is bad caused by.And this hair
Main film forming matter used in bright is silicone acrylic emulsion, and C-Si bond energy is up to 452Kj/mol, highly stable, therefore silicone acrylic emulsion
Heat-resisting quantity, weatherability, good chemical resistance, this has directly ensured the ageing-resistant performance of film.
Lotion is in continuous phase in this water-repellent paint, provides main cohesive force, due to silicone acrylic emulsion adding because of organosilicon
Enter to reduce the cohesive force of lotion, it is therefore desirable to which additional tackifier have used potassium water glass in invention, soluble, are dissolved into silicon
Sour potassium solution, and Silica hydrogel is hydrolyzed into coating, after coating is coated on basal plane, the gel permeation of small molecule into base, with
The evaporation of film moisture, Silica hydrogel be constantly condensed dehydrated crosslinking at three-dimensional netted silicon oxygen bond substance, firmly by film
" nail " is in base.
Invention advantage:
The present invention is that the room temperature synthesis type environmental protection plugging material has the advantages that
1, water absorption rate is low, excellent water resistance.Water absorption rate is less than 3% after the soaked 168h of dry coating, only general polymer
The 30% of cement waterproof paint (water absorption rate is typically up to 10% or so), water-tolerant；
2, alkali resistance is excellent.Dry coating natron 168h post-tensioning strength retention reaches 90% or more, and General polymeric
Object cement waterproof paint generally only has 70% or so；
3, cohesive force is strong.Film water absorption rate is low, and the effect of inorganic silicic acid sylvite, and film adhesion strength is more than 0.9MPa
More than, it is much higher than common coating；
4, ageing-resistant performance is excellent.Film ultraviolet light irradiation 168h post-tensioning strength retention reaches 95% or more, breaks
It splits elongation retention and reaches 90% or more, be much higher than general polymer cement waterproof paint.
Specific embodiment
Below in conjunction with preferred embodiment, further description of the technical solution of the present invention, according to GB/T23445-2009
" polymer cement waterproof paint " standard test method test, is as a result listed in table together.
Embodiment 1
It is mixed in liquid material component and powder component 10:18 ratio.
2 embodiment 1 of table
Embodiment 2
It is mixed in liquid material component and powder component 10:15 ratio.
3 embodiment 2 of table
Embodiment 3
It is mixed in liquid material component and powder component 10:20 ratio.
4 embodiment 3 of table
From embodiment 1 to 3 as it can be seen that hydrophobic polymer cement waterproof paint prepared by the present invention, the equal energy of indices
Meet II type coating index request of GB/T23445-2009, and its water-alkali resistance performance, ultraviolet ray ageing performance, adhesive property
Deng processing with it is untreated after variation it is small.
It should be pointed out that as described above is only to explain the preferred embodiments of the invention, it is right accordingly to be not intended to
The present invention is subject to any form of limitation, therefore all have any modification for making the related present invention under identical spirit
Or change, it should all be included in the scope that the invention is intended to protect.
Claims (8)
1. a kind of hydrophobic type polymer cement waterproof paint, which is characterized in that be made of liquid material and powder, the powder include with
Lower component, by weight percentage:
Wherein the sum of each component content is 100% in powder；
The liquid material includes following components, by weight percentage:
The liquid material and powder are by 10:(15~20) weight ratio meter is uniformly mixed and obtains the hydrophobic type polymer cement waterproof
Coating；The macromolecule emulsion is silicone acrylic emulsion, and the tackifier are powdered potassium silicate.
2. hydrophobic type polymer cement waterproof paint according to claim 1, which is characterized in that the cement is common
Portland cement, marked as one of P.O32.5, P.O42.5 or P.O52.5 or a variety of.
3. hydrophobic type polymer cement waterproof paint according to claim 1, which is characterized in that the tackifier fineness is big
In 100 mesh.
4. hydrophobic type polymer cement waterproof paint according to claim 1, which is characterized in that the hydrophobic powder is organic
Silicon hydrophobic powder.
5. hydrophobic type polymer cement waterproof paint according to claim 1, which is characterized in that the water-reducing agent is powder
One of shape polycarboxylate water-reducer, melamine water-reducing agent are a variety of.
6. hydrophobic type polymer cement waterproof paint according to claim 1, which is characterized in that the hydrophober is diformazan
Base silicone oil, viscosity are 100~800mPa.s.
7. hydrophobic type polymer cement waterproof paint according to claim 1, which is characterized in that the stabilizer is alkyl
Phenol polyethenoxy ether emulsifier, HLB value > 8.
8. the preparation method of hydrophobic type polymer cement waterproof paint as described in any one of claims 1 to 7, feature exist
In including the following steps:
(1) preparation of powder: proportion according to claim 1 mixes each component, stirs evenly；
(2) preparation of liquid material: stirring is first added in macromolecule emulsion, hydrophober, stabilizer by proportion according to claim 1
Kettle stirs 1 hour or more in the case where revolving speed is 500~800r/min, other ingredients is then added, stir evenly；
(3) then by the liquid material obtained and powder by 10:(15~20) weight ratio meter uniformly mixed is to obtain the hydrophobic
Type polymer cement waterproof paint.
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| CN201710575128.4A CN107311568B (en) | 2017-07-14 | 2017-07-14 | A kind of hydrophobic type polymer cement waterproof paint and preparation method thereof |
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| CN201710575128.4A CN107311568B (en) | 2017-07-14 | 2017-07-14 | A kind of hydrophobic type polymer cement waterproof paint and preparation method thereof |
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| CN107311568B true CN107311568B (en) | 2019-09-17 |
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| CN110386788B (en) * | 2019-08-05 | 2021-11-09 | 丽天防水科技有限公司 | JS cement-based anti-counterfeiting coating, preparation method and application |
| CN111057243B (en) * | 2019-12-27 | 2023-04-25 | 芜湖东方雨虹建筑材料有限公司 | Organic silicon resin, polymer cement waterproof coating and preparation method thereof |
| CN113563777A (en) * | 2020-04-29 | 2021-10-29 | 李泽亮 | Green environment-friendly efficient hydrophobic emulsion |
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| CN115141503B (en) * | 2021-03-29 | 2023-09-19 | 万华化学集团股份有限公司 | Bio-based polymer cement waterproof coating |
| CN115820062B (en) * | 2022-08-02 | 2024-03-12 | 济南大学 | Waterproof impervious high-toughness thin spray material and preparation method and application thereof |
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