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CN115572509A - Sealing primer for water-based woodware and woodware prepared from sealing primer - Google Patents

Sealing primer for water-based woodware and woodware prepared from sealing primer Download PDF

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Publication number
CN115572509A
CN115572509A CN202210930319.9A CN202210930319A CN115572509A CN 115572509 A CN115572509 A CN 115572509A CN 202210930319 A CN202210930319 A CN 202210930319A CN 115572509 A CN115572509 A CN 115572509A
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China
Prior art keywords
parts
water
primer
woodware
aqueous
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Granted
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CN202210930319.9A
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CN115572509B (en
Inventor
陈宏彬
欧阳洁
黄建军
谭星
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Guangzhou Guanzhi New Material Technology Co ltd
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Guangzhou Guanzhi New Material Technology Co ltd
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Publication of CN115572509A publication Critical patent/CN115572509A/en
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • 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
    • 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
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention relates to the field of C09D133/00, in particular to a seal coat for a water-based wood product and a wood product prepared from the seal coat, wherein the seal coat at least comprises the following raw materials in parts by weight: 80-90 parts of aqueous single-component resin emulsion, 2-5 parts of film-forming additive, 1-4 parts of grinding additive, 0.3-0.8 part of thickening agent, 0.1-0.5 part of wetting agent, 3-7 parts of functional additive and 4-10 parts of solvent. The product has excellent effect of preventing the expansion rib, good tannin resistance, certain odor sealing effect, convenient operation, and effective environmental protection.

Description

Sealing primer for water-based woodware and woodware prepared from sealing primer
Technical Field
The invention relates to the field of C09D133/00, in particular to a sealing primer for a water-based wood product and a wood product prepared from the sealing primer.
Background
Because the wood contains water, after the water-based paint is coated, the water of a coating film permeates into the wood, the water balance of the wood is damaged, the guide pipe and the wood thorn of the wood are expanded, the original flat surface of the whole wood is damaged, and the rib expansion phenomenon is caused. In the prior art, the research on the anti-swelling rib of the water-based wood coating is more, the patent CN109206993A utilizes nano water-based acrylic resin to seal wood, the patent CN110305545A and the patent CN109135483A adopt water-based resin with better alcohol compatibility as a film forming material, and more alcohol is added into a formula to prepare a quick-drying system, so that the anti-swelling rib and the sealing performance of a paint film are improved, but the anti-swelling rib and the sealing performance of the paint film are not greatly different from those of the alcohol-soluble coating, and the VOC is higher.
In addition to the swelling, the hydrophilic pigments of wood, such as tannic acid, also migrate to the paint film with the penetration of moisture, causing yellowing of the paint film, which is more severe especially when aqueous white bases are applied. Patent CN104403568A forms the hydrogen bond through cation resin's amino and timber's hydroxyl, produces better adhesive force, plays certain effect that prevents moisture to get into the timber fibre, avoids timber to rise the muscle, but this kind of resin is not very obvious to the more serious pine and the rubber wood effect that rises the muscle, and seals water-soluble pigment such as tannic acid and have better effect, but cation resin also can have a lot of problems when using with anion resin is supporting. The two-component coating of the isocyanate system basically matches the nano particles to play a better role in preventing the expansion and the tannin, but the long-term use of the isocyanate has a serious harm to human bodies. Non-isocyanate systems such as patent CN107858078A use aqueous epoxy curing agent to prepare the coating with good anti-swelling and anti-bleeding effects by matching with epoxy acrylic emulsion, but the coating is troublesome to use, and the coating is hard and difficult to polish.
Therefore, aiming at the defects, the invention provides the sealing primer for the water-based woodware and the woodware prepared from the sealing primer, which have the advantages of excellent rib expansion prevention effect, good tannin prevention, certain odor sealing effect, convenience in operation, environmental friendliness and effectiveness.
Disclosure of Invention
The invention provides a sealing primer for a water-based woodware, which at least comprises the following raw materials in parts by weight: 80-90 parts of aqueous single-component resin emulsion, 2-5 parts of film-forming additive, 1-4 parts of grinding additive, 0.3-0.8 part of thickening agent, 0.1-0.5 part of wetting agent, 3-7 parts of functional additive and 4-10 parts of solvent.
Preferably, the solid content of the aqueous one-component resin emulsion is 34 to 50wt%. Preferably, the solid content of the aqueous one-component resin emulsion is 34 to 45wt%.
As a preferable technical scheme, the aqueous single-component resin emulsion is one or a combination of more of self-crosslinking acrylic emulsion, self-crosslinking styrene-acrylic emulsion, pure acrylic emulsion and polyurethane dispersoid. Preferably, the aqueous single-component resin emulsion is a self-crosslinking styrene-acrylic emulsion and/or a polyurethane dispersion; further preferably, the aqueous single-component resin emulsion is a self-crosslinking styrene-acrylic emulsion and a polyurethane dispersion, and the mass ratio of the self-crosslinking styrene-acrylic emulsion to the polyurethane dispersion is (65-75): (10-20). The inventor finds out in the process of exploration that by adopting the combination of the self-crosslinking styrene-acrylic emulsion and the polyurethane dispersion, the mass ratio of the self-crosslinking styrene-acrylic emulsion to the polyurethane dispersion is controlled to be (65-75): (10-20), while ensuring that the primer product has excellent rib expansion prevention effect, the flatness of the board surface is effectively improved, which is probably because the introduction of a certain amount of polyurethane dispersion improves the wetting permeability of the primer product to wood, and further improves the closed conduit effect of the product, thereby effectively improving the flatness of the board surface.
The model of the self-crosslinking styrene-acrylic emulsion is Guanzhi PA-4852.
As a preferred technical solution, the polyurethane dispersion is an alkyd-modified polyurethane dispersion. The alkyd modified polyurethane dispersion is named as PU-7205, can be oxidized and self-crosslinked under the room-temperature drying condition, and does not contain APEO, NMP and organic tin.
As a preferred technical solution, the solvent is a combination of ethanol and water; preferably, the mass ratio of the ethanol to the water is 1: (1-1.2).
As a preferred technical scheme, the film-forming assistant is at least one of dipropylene glycol monobutyl ether, dipropylene glycol methyl ether, ethylene glycol butyl ether and diethylene glycol butyl ether; preferably, the film-forming assistant is a combination of dipropylene glycol monobutyl ether and dipropylene glycol methyl ether; preferably, the mass ratio of the dipropylene glycol monobutyl ether to the dipropylene glycol methyl ether is (1-2): (2-3). The inventor finds that based on the aqueous single-component resin emulsion in the system, the weight ratio of (1-2): the dipropylene glycol monobutyl ether and the dipropylene glycol methyl ether film-forming aid in the step (2-3) are combined, so that a good film-forming effect and a high drying speed are realized, and the safety and the environmental protection are realized while the stability of a primer product is ensured.
As a preferred technical scheme, the grinding aid is at least one of 1097A, HS-2000, YZS-04 and TM1098A, DZ-123; preferably, the grinding aid is HS-2000, so that the grinding property is improved, and meanwhile, the grinding aid has good compatibility with a water-based single-component resin emulsion system, and is helpful for improving the stability and the blocking resistance of the system.
As a preferred technical scheme, the thickening agent is an associative thickening agent; preferably, the associative thickener is PUR44.
As a preferred embodiment, the wetting agent is a nonionic wetting agent. Preferably, the nonionic wetting agent is AD 01.
As a preferred technical scheme, the functional auxiliary is an anti-tannin auxiliary. Preferably, the anti-tannin auxiliary agent is Halox L-44.
As a preferable technical scheme, the preparation raw material of the sealing primer for the water-based woodware further comprises 0-3 parts by weight of a cross-linking agent; the cross-linking agent is added at the time of use. Preferably, the crosslinking agent is at least one of polycarbodiimide, aziridine and silane coupling agent; preferably, the cross-linking agent is polycarbodiimide, and the model of the polycarbodiimide is Town OS-8000. The inventor discovers in the research that on the basis of the system, the polycarbodiimide is introduced, so that the flatness, the tannin-proof effect, the smell sealing property and the water resistance of a paint film of a product are effectively improved, and the overall performance of the paint film is improved, probably because the polycarbodiimide reacts with carboxyl of the aqueous single-component resin emulsion, the crosslinking density of the paint film is effectively improved, and the overall performance of the paint film is improved.
The preparation method of the seal primer for the water-based woodware at least comprises the following steps:
adding the aqueous single-component resin emulsion into a container according to the parts by weight, controlling the rotating speed to be 800-1000r/min, sequentially adding the film-forming aid, the solvent, the grinding aid, the thickening agent, the wetting agent and the functional aid, and then stirring for 10-20min to obtain the aqueous single-component resin emulsion.
According to another aspect of the invention, the wood product is sprayed with the seal primer for the water-based woodware on the surface.
Advantageous effects
1. The invention provides a sealing primer for a water-based woodenware and a woodenware prepared from the sealing primer, which have the advantages of excellent rib expansion prevention effect, good tannin prevention effect, certain odor sealing effect, convenience in operation, environmental friendliness and effectiveness.
2. By adopting the combination of the self-crosslinking styrene-acrylic emulsion and the polyurethane dispersion, the mass ratio of the self-crosslinking styrene-acrylic emulsion to the polyurethane dispersion is controlled to be (65-75): (10-20), the flatness of the plate surface is effectively improved while the excellent rib expansion prevention effect of the primer product is ensured.
3. Based on the system disclosed by the invention, by introducing the polycarbodiimide, the flatness, the tannin-proof effect, the odor sealing property and the water resistance of a paint film of a product are effectively improved, and the overall performance of the paint film is improved.
4. Based on the aqueous single-component resin emulsion in the system, the water-based single-component resin emulsion is prepared from the following components in a mass ratio of (1-2): the dipropylene glycol monobutyl ether and the dipropylene glycol methyl ether film-forming aid in the step (2-3) are combined, so that a good film-forming effect and a high drying speed are realized, and the safety and the environmental protection are realized while the stability of a primer product is ensured.
Drawings
FIG. 1 is a graph comparing the anti-swelling effect of the primer products of example 1 and comparative examples 1 and 2, wherein a represents 1,b and 2,c as example 1.
FIG. 2 is a graph comparing the anti-beading effect of the primer products of examples 1 and 3 of the present invention, wherein d is example 1,e is example 3.
FIG. 3 is a graph comparing the anti-beading effect of the primer products of examples 1 and 3 of the present invention, wherein f is example 1,g is example 3.
Detailed Description
Example 1
The embodiment 1 of the invention provides a sealing primer for a water-based woodware, which comprises the following raw materials in parts by weight: 86 parts of aqueous single-component resin emulsion, 4 parts of film-forming additive, 3 parts of grinding additive, 0.6 part of thickening agent, 0.3 part of wetting agent, 4 parts of functional additive and 6.1 parts of solvent.
The water-based single-component resin emulsion is self-crosslinking styrene-acrylic emulsion, and the model of the self-crosslinking styrene-acrylic emulsion is Guanzhanzhi PA-4852.
The solvent is a combination of ethanol and water; the mass ratio of the ethanol to the water is 3:3.1.
the film-forming assistant is a combination of dipropylene glycol monobutyl ether and dipropylene glycol methyl ether; the mass ratio of the dipropylene glycol monobutyl ether to the dipropylene glycol methyl ether is 1.5:2.5.
the grinding aid is HS-2000.
The thickening agent is an associated thickening agent; the associative thickener is PUR44.
The wetting agent is a non-ionic wetting agent. The model of the nonionic wetting agent is AD 01.
The functional additive is an anti-tannin additive. The model of the tannin-proof auxiliary agent is Halox L-44.
The preparation method of the water-based wood sealing primer comprises the following steps:
adding the aqueous single-component resin emulsion into a container according to the parts by weight, controlling the rotating speed to be 800r/min, sequentially adding the film-forming aid, the solvent, the grinding aid, the thickening agent, the wetting agent and the functional aid, and then continuously stirring for 10min to obtain the aqueous single-component resin emulsion.
In another aspect, example 1 of the present invention provides a wood product, the surface of which is sprayed with the sealer for water-based woodware.
Example 2
The embodiment 2 of the invention provides a sealing primer for water-based woodware and a woodware prepared from the sealing primer, and the specific implementation mode is the same as that of the embodiment 1, except that the preparation raw material of the sealing primer for water-based woodware further comprises 3 parts by weight of a cross-linking agent; the cross-linking agent is added at the time of use. The cross-linking agent is polycarbodiimide; the model of the polycarbodiimide is Guanzhi OS-8000.
Example 3
The embodiment 3 of the invention provides a water-based sealer for woodware and a woodware prepared from the same, and the specific implementation manner of the water-based sealer is the same as that of the embodiment 1, except that the water-based single-component resin emulsion is a self-crosslinking styrene-acrylic emulsion and a polyurethane dispersion, and the mass ratio of the self-crosslinking styrene-acrylic emulsion to the polyurethane dispersion is 71:15, the polyurethane dispersion is an alkyd-modified polyurethane dispersion. The type of the alkyd modified polyurethane dispersion is Guanzhi PU-7205.
Example 4
The embodiment 4 of the invention provides a sealing primer for water-based woodware and a woodware prepared from the sealing primer, and the specific implementation mode is the same as that of the embodiment 3, except that the preparation raw material of the sealing primer for water-based woodware further comprises 3 parts by weight of a cross-linking agent; the cross-linking agent is added at the time of use. The cross-linking agent is polycarbodiimide; the model of the polycarbodiimide is Guanzhi OS-8000.
Comparative example 1
Comparative example 1 of the present invention provides a sealer for aqueous woodware and a wooden product made therefrom, the embodiment being the same as example 1 except that the aqueous one-component resin emulsion is DSM XK12.
Comparative example 2
Comparative example 2 of the present invention is a lubricous WK8000BS aqueous seal anti-swelling primer.
Performance test method
The water-based sealer for woodware of examples and comparative examples was subjected to a sanding property test, an anti-swelling property test, a paint film flatness test, an anti-tannin test, an odor blocking property test, a tack time test, an adhesion force test, a water resistance test, a storage stability test, and the results of each property test are shown in table 1.
1. And (3) sanding property test: the test is carried out according to the national standard GB/T23999-2009. The ease of sanding was observed and the amount of powder removed and whether sandpaper was applied were visually assessed on a scale of 1-5, with grade 5 being the best sandability and grade 1 being the worst sandability.
2. And (3) testing the expansion-preventing rib: 120g/m on 20X 30cm pine board 2 After the coating weight of the wood board is respectively sprayed with two primer products of examples 1-4 and comparative example 1, a primer product of comparative example 2 and a two-component clear surface (Huarun WT89900 water-based fully-sub transparent finish), the degree of rib expansion of the wood board is observed and evaluated according to a grade of 1-5, wherein the grade 5 is the best rib expansion prevention effect, and the grade 1 is the worst rib expansion prevention effect;
FIGS. 1-3 are graphs showing the effect of the anti-beading of the primer products of examples and comparative examples, wherein the operating conditions of FIG. 1 are as follows: 120g/m on 20X 30cm pine board 2 The coating weight of the paint is that the two primer products of example 1 and comparative examples 1 and 2 and a two-component clear surface (Huarun WT89900 water-based full-sub transparent finish paint) are sprayed to observe the rib expansion degree of the pine board, wherein the comparative examples 1 and 2 have sporadic rib expansion conditions, while the example 1 of the formula of the invention shows better rib expansion prevention effect on the coating process.
The operating conditions of FIG. 2 are: 120g/m on 20X 30cm pine board 2 The coating weight of the primer products of the two examples 1 and 3 are sprayed, and the effect of preventing the expansion of the steel strip of the example 3 obtained after adding the crown PU-7205 on the basis of the example 1 is proved to be obviously better than that of the example 1.
In the same operating conditions as in FIG. 1, the bulked wood boards of examples 1 and 3 did not exhibit beading after both were sprayed with a two-component varnish, but the flatness of the board surface of example 3 was significantly better than that of example 1.
3. Leveling of paint filmTesting the degree: 120g/m on 20X 30cm pine board 2 The coating weights of (1) to (5) were evaluated on a scale of 1 to 5, with grade 5 being the best and grade 1 being the worst, after spraying the primer products of two examples and comparative examples and one clear side of the two-component finish (lush WT89900 waterborne full-opaque topcoat).
4. Anti-tannin test: the test is carried out by adopting a room temperature method, 5 percent tannic acid aqueous solution is sprayed on a density board in the same gram number, a primer product of the embodiment and the comparative example with the same coating amount is sprayed after being dried for 4 hours, white finish paint with the same thickness is ground and sprayed after being dried, a color difference meter is used for detecting delta b and delta E (total color difference) after the paint is placed for one month at room temperature, the tannin prevention effect is evaluated, the evaluation is carried out according to the grade of 1-5, wherein the grade 5 is the best tannin prevention effect, and the grade 1 is the worst tannin prevention effect.
5. Odor seal test: the base paint products of two examples and comparative examples and a two-component clear finish (lush WT89900 water-based all-translucent top coat) were sprayed on all six sides of a pine board, the board was placed in a sealed bag after 7 days of drying at room temperature, and then after 3 days, an odor panel consisting of 10 persons was used to evaluate the odor size of each board and to score, wherein 5 was the minimum odor and 1 was the maximum odor, and finally an average score of 10 persons was taken.
6. Surface dry time test: the test is carried out according to the national standard GB/T1728-1979B method.
7. And (3) testing the adhesive force: the evaluation was performed on a 0B-5B scale, with 5B being the best and 0B being the worst, as determined by the cross-hatch method according to ASTM D3359.
8. And (3) testing water resistance: and (4) testing according to national standard GB/T23999-2009, observing the whitening or foaming condition of a paint film, and evaluating according to a grade of 1-5, wherein the grade 5 is the best water resistance, and the grade 1 is the worst water resistance.
9. And (4) testing the storage stability: the primer products of the examples and the comparative examples were stored at 50 ℃ for 21 days, the coating delamination and powder deposition were observed, and the rib-swelling resistance of the samples stored at room temperature was compared, and the storage stability was recorded as "acceptable" if there was no delamination and hard powder deposition and no significant change in the rib-swelling resistance.
Table 1: results of performance testing of the primer products of examples and comparative examples
Example 1 Example 2 Example 3 Example 4 Comparative example 1 Comparative example 2
Sandability (grade) 5 5 5 5 5 5
Expansion-proof rib (grade) 5 5 5 5 4.5 4
Flatness of paint film (grade) 3 4 4 5 3 3
Tannin proof (grade) 4 5 4.5 5 4 2
Closure of smell (grade) 3 3.5 3.5 4 3 3
Surface drying time/min 16 16 17 17 17 16
Adhesion force 5B 5B 5B 5B 5B 5B
Water resistance (grade)/24 h 4 4.5 4.5 5 4 4
Storage stability Qualified Qualified Qualified Qualified Qualified Qualified

Claims (10)

1. The sealing primer for the water-based woodware is characterized by at least comprising the following preparation raw materials in parts by weight: 80-90 parts of aqueous single-component resin emulsion, 2-5 parts of film-forming additive, 1-4 parts of grinding additive, 0.3-0.8 part of thickening agent, 0.1-0.5 part of wetting agent, 3-7 parts of functional additive and 4-10 parts of solvent.
2. The seal primer for aqueous woodenware as claimed in claim 1, wherein the solid content of the aqueous single-component resin emulsion is 34-50wt%.
3. The seal primer for aqueous woodenware as claimed in claim 1 or 2, wherein the aqueous single-component resin emulsion is one or more of self-crosslinking acrylic emulsion, self-crosslinking styrene-acrylic emulsion, pure acrylic emulsion and polyurethane dispersion.
4. The seal primer for aqueous woodenware as claimed in claim 3, wherein the aqueous single-component resin emulsion is a self-crosslinking styrene-acrylic emulsion and/or a polyurethane dispersion.
5. The primer according to claim 4, wherein the solvent is a combination of ethanol and water.
6. The seal primer for aqueous woodenware according to claim 5, wherein the film forming aid is at least one of dipropylene glycol monobutyl ether, dipropylene glycol methyl ether, ethylene glycol butyl ether and diethylene glycol butyl ether.
7. The seal primer for aqueous woodenware according to claim 6, wherein the film forming aid is a combination of dipropylene glycol monobutyl ether and dipropylene glycol methyl ether.
8. The seal primer for water-borne woodware according to any one of claims 1 to 7, characterized in that the seal primer for water-borne woodware is prepared from 0 to 3 parts by weight of a cross-linking agent.
9. The seal primer for aqueous woodenware according to claim 8, wherein the cross-linking agent is polycarbodiimide.
10. A wood product, characterized in that the surface of said wood product is sprayed with the water-based sealer for woodware according to any one of claims 1 to 9.
CN202210930319.9A 2022-08-03 2022-08-03 Seal primer for water-based wood and wood product prepared from seal primer Active CN115572509B (en)

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Citations (9)

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