CN114605874A - Reinforced alkali-resistant permeable primer and preparation method thereof - Google Patents
Reinforced alkali-resistant permeable primer and preparation method thereof Download PDFInfo
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- CN114605874A CN114605874A CN202210370386.XA CN202210370386A CN114605874A CN 114605874 A CN114605874 A CN 114605874A CN 202210370386 A CN202210370386 A CN 202210370386A CN 114605874 A CN114605874 A CN 114605874A
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- resistant
- reinforced alkali
- pyranoquinoline
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- 239000003513 alkali Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 33
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims abstract description 27
- HGFMFKSDOFFKRV-UHFFFAOYSA-N 8h-pyrano[2,3-h]quinoline Chemical class C1=CC=NC2=C(C=CCO3)C3=CC=C21 HGFMFKSDOFFKRV-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000839 emulsion Substances 0.000 claims abstract description 23
- 239000000126 substance Substances 0.000 claims abstract description 18
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 claims abstract description 17
- QYMGIIIPAFAFRX-UHFFFAOYSA-N butyl prop-2-enoate;ethene Chemical compound C=C.CCCCOC(=O)C=C QYMGIIIPAFAFRX-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 17
- 229920006245 ethylene-butyl acrylate Polymers 0.000 claims abstract description 17
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims abstract description 13
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 10
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims abstract description 9
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims abstract description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 9
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims abstract description 9
- 239000010445 mica Substances 0.000 claims abstract description 9
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 9
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000002987 primer (paints) Substances 0.000 claims description 47
- 238000003756 stirring Methods 0.000 claims description 12
- 239000011148 porous material Substances 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- -1 2-methylaziridinyl Chemical group 0.000 claims description 4
- 239000007983 Tris buffer Substances 0.000 claims description 4
- 239000004964 aerogel Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 2
- 239000004965 Silica aerogel Substances 0.000 claims description 2
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- 238000009775 high-speed stirring Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000002585 base Substances 0.000 abstract description 22
- 238000000576 coating method Methods 0.000 abstract description 21
- 239000011248 coating agent Substances 0.000 abstract description 19
- 239000000463 material Substances 0.000 abstract description 15
- 239000000853 adhesive Substances 0.000 abstract description 13
- 230000001070 adhesive effect Effects 0.000 abstract description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 239000011780 sodium chloride Substances 0.000 abstract description 6
- 239000012466 permeate Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 20
- 239000003973 paint Substances 0.000 description 6
- 239000012752 auxiliary agent Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OZDGMOYKSFPLSE-UHFFFAOYSA-N 2-Methylaziridine Chemical compound CC1CN1 OZDGMOYKSFPLSE-UHFFFAOYSA-N 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012496 blank sample Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000005725 8-Hydroxyquinoline Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229960003540 oxyquinoline Drugs 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D125/00—Coating compositions based on homopolymers or 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; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a reinforced alkali-resistant penetrating primer and a preparation method thereof. The reinforced alkali-resistant permeable primer comprises the following raw material components in parts by weight: 30-50 parts of styrene-acrylic emulsion, 0.10-1 part of hydroxyethyl cellulose, 1-4 parts of pyranoquinoline derivatives, 2-3 parts of aziridine crosslinking agent, 2-4 parts of ethylene-butyl acrylate copolymer, 5-10 parts of mica powder, 0.05-0.1 part of pH regulator, 1-5 parts of propylene glycol, 5-10 parts of polyvinyl alcohol, 1-3 parts of nano silicon dioxide and 20-25 parts of water. The reinforced alkali-resistant permeable primer can effectively permeate into a base material, pyranoquinoline molecules in the primer can form a bonding effect with saline substances in the base material, the saline substances are effectively prevented from being separated out, the expansibility of a putty layer is well inhibited, and the stability and the adhesive force of a coating are further improved.
Description
Technical Field
The invention relates to the field of coatings, in particular to a reinforced alkali-resistant penetrating primer and a preparation method thereof.
Background
The putty in domestic market is various, the putty is diverse in quality, different in quality, and often some construction methods select the putty with unqualified quality, and due to poor putty strength and excessively loose wall putty layers, the phenomena of large-area peeling, saltpetering, fading, pulverization and the like of finish paint occur on the wall surface in the later period, so that primer is required to be coated on the surfaces of base layers (including cement mortar base materials, putty layers or other base materials) of inner and outer walls of a building. The primer is a first coating film attached to a base material, and a loose putty layer has high requirements on the quality of the primer and needs to have good water resistance, alkali resistance, good adhesive force and interlayer adhesive force. On one hand, the permeable primer can perform chemical bond action with internal groups through permeation on the base layer, and plays roles in closing capillary pores of the base layer and retarding the precipitation of saline-alkali substances; meanwhile, the method can play a role in surface reinforcement treatment and stabilization on the pulverized, loose and brittle base layer so as to improve the adhesive force of the finish paint and ensure the service life of the finish paint.
The common primer in the market at present has poor permeability, the film is formed on the surface of a base material mainly through film forming substance emulsion and a large amount of fillers, the base material is difficult to be deeply reinforced, the permeable seal primer can effectively permeate the base material to a certain depth and then forms a film on the wall surface of a pore, the capillary pores of a base layer are sealed, saline-alkali substances are blocked and separated out, the permeable seal primer and the surface groups of the base material are subjected to chemical bonding, the strength of the base layer and the adhesive force between the base layer and a subsequent coating are increased, and the reinforcing effect is very important for a loose putty layer.
However, the existing base material seal primer is difficult to prevent the water-soluble salt from being separated out, so that the coating is easy to fall off, and the stability and the adhesive force of the coating are greatly reduced. Therefore, it is necessary to develop a reinforced alkali-resistant primer.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a reinforced alkali-resistant penetrating primer and a preparation method thereof. The reinforced alkali-resistant permeable primer disclosed by the invention can effectively permeate into a base material and form a film on the surface, pyranoquinoline molecules in the primer can form a bonding effect with saline substances in the base material, so that the saline substances are effectively prevented from being separated out, the expansibility of a putty layer is well inhibited, the risk that the coating is easy to fall off is reduced, and the stability and the adhesive force of the coating are further improved.
The invention solves the technical problems through the following technical scheme:
a reinforced alkali-resistant permeable primer comprises the following raw material components in parts by weight: 30-50 parts of styrene-acrylic emulsion, 0.10-1 part of hydroxyethyl cellulose, 1-4 parts of pyranoquinoline derivatives, 2-3 parts of aziridine crosslinking agent, 2-4 parts of ethylene-butyl acrylate copolymer, 5-10 parts of mica powder, 0.05-0.1 part of pH regulator, 1-5 parts of propylene glycol, 5-10 parts of polyvinyl alcohol, 1-3 parts of nano silicon dioxide and 20-25 parts of water.
In the preferred embodiment of the invention, the reinforced alkali-resistant penetrating primer is prepared from the following raw materials in parts by weight: 30-50 parts of styrene-acrylic emulsion, 0.10-1 part of hydroxyethyl cellulose, 1-4 parts of pyranoquinoline derivatives, 2-3 parts of aziridine crosslinking agent, 2-4 parts of ethylene-butyl acrylate copolymer, 5-10 parts of mica powder, 0.05-0.1 part of pH regulator, 1-5 parts of propylene glycol, 5-10 parts of polyvinyl alcohol, 1-3 parts of nano silicon dioxide and 20-25 parts of water.
Wherein, the styrene-acrylic emulsion can adopt various styrene-acrylic emulsions which are conventionally used in the field, and the preferred emulsion is Dow chemical Bai calendar mol DC420 emulsion or Shanghai Badhi RS-306 emulsion.
The ethylene-butyl acrylate copolymer is preferably an ethylene-butyl acrylate copolymer with a DuPont brand of 3135 AC.
Among them, the pyranoquinoline derivatives are preferably halogenated pyranoquinolines, and more preferably halogenated pyranoquinolines
And/or
。
Among them, the aziridine crosslinking agent is preferably a trifunctional aziridine crosslinking agent, and more preferably trimethylolpropane-tris [3- (2-methylaziridinyl) ] propionate.
Wherein the pH value of the reinforced alkali-resistant penetrating primer is preferably 7.5-9.0.
The pH regulator can be a pH regulator conventionally used in the field of coatings, is used for regulating the pH of the primer within the range of 7.5-9.0, and preferably adopts AMP-95 produced by the Dow chemical company.
Wherein, the nano-silica is preferably silica aerogel; preferably, the pore size of the silicon dioxide aerogel is 80-100 nm, the porosity is 90-94%, and the dry density is 40-100 kg/m3The thermal conductivity is 0.010-0.025W/(m.K).
Wherein, preferably, the water is deionized water.
In a preferred embodiment of the present invention, the components of the reinforced alkali-resistant penetration-resistant primer further include an auxiliary agent.
It will be readily understood that the above-mentioned adjuvants may be selected according to the actual application of the coating, and for example, the adjuvants belonging to the aspect of improving the surface activity of the coating are dispersants, wetting agents, emulsifiers, demulsifiers, antifoaming agents, etc.; the auxiliary agents belonging to the auxiliary function comprise a drier, a curing agent, a coupling agent, a polymerization inhibitor, an anti-skinning agent, an antioxidant, an anti-microbial agent, a mildew preventive and the like.
The invention also provides a preparation method of the reinforced alkali-resistant permeable primer, which comprises the following steps: according to the ratio of the components, the styrene-acrylic emulsion, the hydroxyethyl cellulose, the mica powder, the propylene glycol, the polyvinyl alcohol and the water are added into a stirring kettle, then the mixture is stirred at a high speed and dispersed uniformly, then the pyranoquinoline derivatives, the ethylene-butyl acrylate copolymer, the nano silicon dioxide and the pH regulator are added, the aziridine crosslinking agent is added after the mixture is stirred uniformly, and the mixture is mixed uniformly.
Preferably, the high-speed stirring and uniform dispersion is to disperse the component particles to the fineness of less than 30 μm.
Wherein the rotating speed for uniformly stirring is 400-600 rpm.
In the invention, if the reinforced alkali-resistant permeable primer further comprises an auxiliary agent, the auxiliary agent is added in the last step, namely the auxiliary agent is added after the aziridine crosslinking agent is added and uniformly mixed.
According to the technical scheme, the pyranoquinoline derivatives are added into the styrene-acrylic emulsion, the pyranoquinoline large groups are beneficial to sealing capillary pores of a putty layer of a base material, the halogen substituent and alkaline substances of the putty layer are bonded and acted, and under the synergistic cooperation of the aziridine crosslinking agent and other components, on one hand, the plumpness of a paint film can be increased, the adhesive force of a primer coating is improved, on the other hand, the alkalinity of the putty can be effectively sealed, and the phenomena of alkali return and blooming of the paint layer are avoided.
Compared with the prior art, the invention has the following beneficial effects: the reinforced alkali-resistant permeable primer disclosed by the invention can effectively permeate into a base material and form a film on the surface, pyranoquinoline molecules in the primer can form a bonding effect with saline substances in the base material, so that the saline substances are effectively prevented from being separated out, the expansibility of a putty layer is well inhibited, the risk that the coating is easy to fall off is reduced, and the stability and the adhesive force of the coating are further improved.
Detailed Description
The present invention will be described in detail with reference to specific examples. Other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Example 1
The formula of the raw materials of the reinforced alkali-resistant penetrating primer is shown in the following table:
wherein the styrene-acrylic emulsion is a Dow chemical calendarA molar DC420 emulsion; the ethylene-butyl acrylate copolymer is a DuPont brand 3135AC ethylene-butyl acrylate copolymer; the structural formula of the pyranoquinoline derivative is shown in the specification
(ii) a The aziridine crosslinking agent is trimethylolpropane-tris [3- (2-methylaziridine)]Propionate ester; the pH regulator is AMP-95 produced by Dow chemical company; the nano silicon dioxide is silicon dioxide aerogel, and the parameters are as follows: the pore size is 80-100 nm, the porosity is 90-94%, and the dry density is 40-100 kg/m3The thermal conductivity is 0.010-0.025W/(m.K).
The pH of the reinforced alkali-resistant primer of this example was 8.0.
The preparation method comprises the following steps: according to the proportion of each component, adding styrene-acrylic emulsion, hydroxyethyl cellulose, mica powder, propylene glycol, polyvinyl alcohol and water into a stirring kettle, stirring at a high speed to uniformly disperse until the dispersion fineness of component particles is below 30 mu m, then adding pyranoquinoline derivatives, ethylene-butyl acrylate copolymer, nano-silica and pH regulator, stirring uniformly (500 rpm), then adding aziridine crosslinking agent, and mixing uniformly.
Example 2
The formula of the raw materials of the reinforced alkali-resistant penetrating primer is shown in the following table:
wherein the styrene-acrylic emulsion is Shanghai Badfu RS-306 emulsion; the ethylene-butyl acrylate copolymer is a DuPont brand 3135AC ethylene-butyl acrylate copolymer; the structural formula of the pyranoquinoline derivative is shown in the specification
(ii) a The aziridine crosslinking agent is trimethylolpropane-tris [3- (2-methylaziridine)]Propionate esters; the pH regulator is AMP-95 produced by Dow chemical company; the nano silicon dioxide is silicon dioxide aerogel, and the parameters are as follows: the pore size is 80-100 nm, the porosity is 90-94%,a dry density of 40 to 100kg/m3The thermal conductivity is 0.010-0.025W/(m.K).
The pH of the reinforced alkali-resistant primer of this example was 9.0.
The preparation method comprises the following steps: according to the proportion of each component, adding styrene-acrylic emulsion, hydroxyethyl cellulose, mica powder, propylene glycol, polyvinyl alcohol and water into a stirring kettle, stirring at a high speed to uniformly disperse until the dispersion fineness of component particles is below 30 mu m, then adding pyranoquinoline derivatives, ethylene-butyl acrylate copolymer, nano-silica and pH regulator, stirring uniformly (500 rpm), then adding aziridine crosslinking agent, and mixing uniformly.
Comparative example 1
In the raw material formula of the coating in the embodiment, 8-hydroxyquinoline is used for replacing pyranoquinoline derivatives, and the formula and parameter conditions of other components are the same as those in the embodiment 1, so that the penetrating primer is prepared. The performance was tested.
Test for testing reinforcing performance effect
Coating putty powder on the surface of the cleaned glass plate, placing the glass plate in a forced air drying oven at 40 ℃ for 30min, taking out the glass plate and cooling the glass plate to room temperature; coating a primer to be tested on the surface of the dried putty layer by using a 150-micrometer wet film preparation device; the primer-bearing coating is placed for 72 hours at the temperature of 25 ℃ and the relative humidity of 50%. The blank samples and the samples containing the reinforcement type primer were tested for their adhesive strength as specified in GB/T9779-2015 at 6.18, respectively, wherein the adhesive strength of the blank samples should not be greater than 0.1 MPa. The test results are shown in the following table.
It can be seen from the comparative examples that the reinforced alkali-resistant penetrating primer disclosed by the invention can play a role in sealing the base layer alkali when being used for the exterior wall putty layer, so that the paint film falling caused by the efflorescence is reduced, and the adhesive force of the coating is improved, while the comparative example 1 shows poor coating adhesive force, and even the coating falls off. The adhesion strength of the coating tested in comparative example 1 was also not high, probably because part of the primer of this comparative example did not penetrate into the putty layer or did not penetrate to a sufficient depth, resulting in a less pronounced strengthening of the substrate by the primer. Therefore, the formula primer disclosed by the invention can realize good permeability and reinforcement.
It should be emphasized that the above detailed description is specific to possible embodiments of the invention, but this is not intended to limit the scope of the invention, and equivalent implementations or modifications that do not depart from the technical spirit of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A reinforced alkali-resistant permeable primer comprises the following raw material components in parts by weight: 30-50 parts of styrene-acrylic emulsion, 0.10-1 part of hydroxyethyl cellulose, 1-4 parts of pyranoquinoline derivatives, 2-3 parts of aziridine crosslinking agent, 2-4 parts of ethylene-butyl acrylate copolymer, 5-10 parts of mica powder, 0.05-0.1 part of pH regulator, 1-5 parts of propylene glycol, 5-10 parts of polyvinyl alcohol, 1-3 parts of nano silicon dioxide and 20-25 parts of water.
2. The reinforced alkali-resistant penetrating primer according to claim 1, wherein the reinforced alkali-resistant penetrating primer is prepared from the following raw materials in parts by weight: 30-50 parts of styrene-acrylic emulsion, 0.10-1 part of hydroxyethyl cellulose, 1-4 parts of pyranoquinoline derivatives, 2-3 parts of aziridine crosslinking agent, 2-4 parts of ethylene-butyl acrylate copolymer, 5-10 parts of mica powder, 0.05-0.1 part of pH regulator, 1-5 parts of propylene glycol, 5-10 parts of polyvinyl alcohol, 1-3 parts of nano silicon dioxide and 20-25 parts of water.
3. The reinforced alkali-resistant primer coating of claim 1, wherein the styrene-acrylic emulsion is Dow chemical Bailemon DC420 emulsion or Shanghai Badhi RS-306 emulsion; the ethylene-butyl acrylate copolymer is a DuPont ethylene-butyl acrylate copolymer with the trademark of 3135 AC.
4. The reinforced alkali-resistant primer coating according to claim 1, wherein the pyranoquinoline derivative is preferably a halogenated pyranoquinoline, more preferably a halogenated pyranoquinoline
And/or
。
5. The reinforced alkali-resistant primer according to claim 1, wherein the aziridine crosslinking agent is preferably a trifunctional aziridine crosslinking agent, more preferably trimethylolpropane-tris [3- (2-methylaziridinyl) ] propionate.
6. The reinforced alkali-resistant penetrating primer according to claim 1, wherein said reinforced alkali-resistant penetrating primer has a pH of 7.5-9.0.
7. The reinforced alkali-resistant primer according to claim 1, wherein the nano silica is silica aerogel; preferably, the pore size of the silicon dioxide aerogel is 80-100 nm, the porosity is 90-94%, and the dry density is 40-100 kg/m3The thermal conductivity is 0.010-0.025W/(m.K).
8. The reinforced alkali-resistant primer according to claim 1, wherein the water is deionized water.
9. A method for preparing the reinforced alkali-resistant primer according to any one of claims 1 to 8, comprising the following steps: according to the component ratio, adding styrene-acrylic emulsion, hydroxyethyl cellulose, mica powder, propylene glycol, polyvinyl alcohol and water into a stirring kettle, stirring at a high speed to disperse uniformly, then adding pyranoquinoline derivatives, ethylene-butyl acrylate copolymer, nano silicon dioxide and pH regulator, stirring uniformly, then adding aziridine crosslinking agent, and mixing uniformly.
10. The preparation method according to claim 9, wherein the high-speed stirring is performed to disperse the component particles to a fineness of less than 30 μm; the rotating speed for stirring uniformly is 400-600 rpm.
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| CN202210370386.XA CN114605874A (en) | 2022-04-10 | 2022-04-10 | Reinforced alkali-resistant permeable primer and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116731571A (en) * | 2023-05-05 | 2023-09-12 | 上海三银涂料科技股份有限公司 | Water-based rust-transferring primer for low-surface-treatment steel structure and preparation method thereof |
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| WO2000007960A1 (en) * | 1998-08-05 | 2000-02-17 | Kansai Paint Co., Ltd. | Water-based sealer for inorganic porous substrate and method of in-line coating |
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| CN103694808A (en) * | 2013-12-10 | 2014-04-02 | 青岛益群漆业集团有限公司 | Efficient seal primer |
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