CN110317502B - Water-based woodware seal primer and preparation method thereof - Google Patents
Water-based woodware seal primer and preparation method thereof Download PDFInfo
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- 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
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- 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
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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
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- 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
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- 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
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- C09D7/65—Additives macromolecular
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
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- C—CHEMISTRY; METALLURGY
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- 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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Abstract
The invention discloses a waterborne wood sealing primer and a preparation method thereof. The seal coat comprises the following components in percentage by weight: 30-50% of cationic monomer modified water-based acrylic emulsion, 20-40% of water-based self-crosslinking acrylic emulsion, 5-10% of titanium dioxide, 0.2-2% of internal crosslinking agent, 0.5-3.5% of anti-bleeding auxiliary agent, 1-3% of polishing auxiliary agent, 2-6% of film-forming auxiliary agent, 10-25% of water and 0.5-3% of auxiliary agent. The invention adopts the water-based acrylic emulsion modified by cationic monomer as the main film forming substance, is assisted by the water-based self-crosslinking acrylic emulsion for blending modification, and is prepared by dispersing and stirring the mixture with titanium dioxide, anti-bleeding auxiliary agent and other conventional auxiliary agents.
Description
Technical Field
The invention relates to the field of water-based wood coatings, in particular to a water-based wood sealing primer suitable for coating various wood substrates and a preparation method thereof.
Background
Because of the wide variety of wood substrates covered in wood coating, the wood materials mainly used include natural sawn woods such as beech, oak, ash, pine, birch, maple, cherry, black walnut, and the like, and also include artificial boards such as density boards, plywood, particle boards, and the like. As wood itself, its chemical composition is extremely complex, and the average content of the essential elements of oven-dried wood is: 50% of carbon, 6.4% of hydrogen, 42.6% of oxygen and 1% of nitrogen. The main components comprise cellulose, hemicellulose, lignin and wood extract (tannin, oil, essence, pigment, alkaloid, etc.). Due to the existence of wood extracts, the cell cavities of the wood usually contain resin, gum, tannic acid, pigments, volatile oils, water and other substances, and if the sealing effect of the wood primer on the wood is not good, the defects of oil spitting, color change and the like of a paint film are easily caused.
Earlier, the industry generally adopted two methods for the substrate bleeding problem: firstly, a cationic emulsion designed by a special molecular structure is adopted as a film forming substance to prepare the water-based seal primer, and secondly, an anti-tannic acid auxiliary agent (which usually contains water-soluble aluminum, magnesium, zirconium and zinc compounds and can be subjected to metal complexation with pigments, tannic acid and the like in wood to be deposited on the bottom layer of a paint film without migration) is directly added into the formula of the conventional water-based wood clear primer, so that a certain bleeding seal effect is achieved. On the basis, the Chinese patent CN103642342B adopts a cationic emulsion with good bleeding resistance to match with a bleeding resistance auxiliary agent with excellent metal complexing ability to play a synergistic effect, and adopts 1 or more than 2 mixtures in aqueous cationic acrylic emulsion, aqueous cationic modified acrylic copolymer dispersoid or aqueous cationic epoxy resin ester emulsion as main film forming substances of the coating, and also adopts 1 or more than 2 mixtures in zirconium acetate, 20 wt% magnesium chloride aqueous solution, aluminum zirconium coupling agent, aluminum chlorohydrol, 20 wt% zirconium sulfate aqueous solution, 20 wt% zinc sulfate aqueous solution or titanate coupling agent as bleeding resistance auxiliary agents to prepare the waterborne bleeding resistance wood ware transparent primer capable of being stably stored. However, the cationic seal primer is often incompatible with the aqueous woodenware coating prepared by the conventional anionic aqueous acrylic emulsion, special equipment is required to be prepared in product development and production links and downstream construction application, otherwise, the situation that raw slag, gel or even a spraying system is completely blocked and scrapped is easily caused, and the defects that the hardness is slow to establish, the grinding is not easy, the coating cannot be stacked for a long time after construction and the like exist, so that the later-stage cracking risk of the solid color coating process caused by the large shrinkage rate of a paint film is also brought.
The Chinese patent CN 105295607A adopts hydrophilic modified aromatic polyisocyanate and anionic acrylic emulsion or modified acrylic polymer emulsion to prepare the waterborne wood sealing primer, and the Chinese patent CN 105602377A also adopts waterborne HDI tripolymer and waterborne hydroxy acrylic emulsion to perform chemical crosslinking reaction and fully exert the sealing performance under the premise of the existence of tannin polymerization inhibitor. The method can even play a good sealing role for base materials (such as black walnut, sapelli, rubber wood and red rubber) with heavy oil and pigment contents, but the products are two-component systems, namely two packages, and need to be added and uniformly mixed according to a certain proportion before construction by a painter for reuse, so that the products are inconvenient to use compared with the conventional single-component products, and the problem of short pot life is caused after the addition of the curing agent, and the paint is required to be adjusted after the amount of the paint is manually and carefully calculated so as not to cause waste, so the products are not popular in the market.
Chinese patent CN 105647309 a adopts imidized SMA modification to prepare aqueous cationic acrylic emulsion and then prepare aqueous seal primer, which overcomes the problems of low hardness, poor sanding property and the like commonly existing in the cationic emulsion, and retains the advantage of good anti-bleeding seal property inherent in the cationic emulsion, but for the problem of compatibility between cationic products and anionic aqueous wood coatings, special cylinder production is required, and a special spraying system is required to be additionally provided, so that the market application is limited.
In addition, as the prior art generally adopts and develops the waterborne woodware sealing transparent primer, when white coating is carried out on wood with deeper conduit lines, the white paint is easy to be difficult to enter the conduit, black hole-shaped pinholes are easy to appear after coating, and sometimes, the requirements of carrying out repeated strict and fine grinding and spraying can be eliminated; even if more bleeding resistance auxiliary agents are added to the conventional white primer to serve as a seal primer, bleeding inevitably occurs. Therefore, a new formula of the waterborne wood sealing primer is needed, and the waterborne wood sealing primer has more excellent construction performance while realizing the long-term effective anti-bleeding sealing effect on various substrates.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a water-based woodware seal primer and a preparation method thereof. The waterborne wood sealing primer provided by the invention overcomes the defects of low hardness, poor sanding property, inconvenient construction and the like of the traditional cationic waterborne wood sealing primer, does not need to add polyisocyanate after adopting a two-component form, and well solves the contradictory problems of the current waterborne wood sealing primer in bleeding resistance and construction convenience.
The water-based acrylic emulsion modified by the cationic monomer but still showing the anionic property on the whole is used as a main film forming material, and the mixed anionic water-based self-crosslinking acrylic emulsion cannot have the phenomena of poor stability, coarse return and slag formation caused by incompatibility of anionic emulsion and cationic emulsion, so that the quality accidents of demulsification gel or spray gun blockage and the like cannot occur in the production process and the downstream application process of the water-based wood sealing primer provided by the invention, and the self-crosslinking acrylic emulsion after mixing can remarkably improve the hardness and the sanding property of the water-based acrylic emulsion modified by the cationic monomer. Meanwhile, under the synergistic metal complexing action of the resin cation structural unit, the bleeding preventing auxiliary agent and the aluminum (or zirconium) element on the surface of the rutile titanium dioxide in the seal primer, the paint film is endowed with excellent early bleeding preventing effect. In addition, an internal crosslinking agent added in the system, namely epoxy polysiloxane oligomer, can slowly perform crosslinking reaction with-COOH in an acrylic emulsion in the drying and curing process of a paint film, so that the final crosslinking density and water resistance of the paint film are improved, and the later-stage exudation of hydrophilic pigments in wood is prevented.
The technical scheme adopted for realizing the purpose of the invention is as follows:
the water-based woodware sealing primer comprises the following components in percentage by weight:
the cationic monomer modified water-based acrylic emulsion is a water-based acrylic emulsion which is modified by a cationic monomer and shows anionic characteristics as a whole;
the water-based self-crosslinking acrylic emulsion is anionic water-based self-crosslinking acrylic emulsion with the lowest film-forming temperature of 30-50 ℃;
the titanium dioxide is rutile titanium dioxide with the surface modified by aluminum or zirconium;
the internal crosslinking agent is polysiloxane oligomer with epoxy functional groups;
the anti-bleeding auxiliary agent is an aqueous solution of a coordination compound containing aluminum, magnesium, zirconium or zinc;
the auxiliary agent is more than four of pH regulator, defoamer, thickener, emulsifier, base material wetting agent and bactericide.
To further achieve the object of the present invention, preferably, the cationic monomer-modified aqueous acrylic emulsion is Joncryl 8227 available from Pasteur Corp., Vanhua chemical Co., Ltd
4312. One or more of ECS-4907 available from Zhongshan Richci and HG-4810 available from Jia Bao Li.
Preferably, the aqueous self-crosslinking acrylic emulsion is from Van der Chemicals
4501、
4401. One or more of ROSHIELD 3311 available from Dow, Joncryl 8330 available from Baskfield, and Setaqua 6718 available from Nepetes.
Preferably, the titanium dioxide is CR-826 of Teno and CR of Kemu
R-900、
R-902+, Ningbo New Fofu NTR-606 and of the company Bobary
One or more of BLR-895.
Preferably, the internal crosslinking agent is of the winning industrial group
HYDROSIL 2926, Coatosil2287 from MEITOG, USA, and MP 200.
Preferably, the color-blocking auxiliary agent is one or more of L-44, L-66 and L-77 of Halox company in the United states.
Preferably, the grinding aid is a grinding powder or a grinding slurry containing a zinc stearate or calcium stearate compound; the film-forming assistant is an alcohol ether organic solvent.
Preferably, the grinding aid is one or more of MJ-555 of Simian Saint chemical industry, Hydropalat SL 3697 of Pasteur and SAK-ZS-PLB of Singapore Sanyi chemical industry; the film-forming assistant is one or more of propylene glycol methyl ether, propylene glycol butyl ether, dipropylene glycol methyl ether and dipropylene glycol butyl ether.
Preferably, the amount of the auxiliary agent is as follows by percentage based on the total mass of the raw materials:
the pH regulator is an organic amine compound;
the defoaming agent is an organic silicon defoaming agent;
the thickening agent is an associated polyurethane thickening agent;
the emulsifier is a nonionic surfactant;
the base material wetting agent is polyether modified polysiloxane wetting agent;
the bactericide is an isothiazolinone-containing biocide.
The pH regulator is an organic amine compound, and particularly preferably one or more of Triethylamine (TEA), N-Dimethylethanolamine (DMEA) and 2-amino-2-methyl-1-propanol (AMP-95);
the defoaming agent is a silicone defoaming agent, and particularly preferably is one or more of BYK-024, BYK-028, BYK-093, TEGO-810, TEGO-822 and TEGO-902W, TEGO-904W of the Germany Bike company;
the thickener is an associated polyurethane thickener, and is particularly preferably one or more of associated polyurethane thickeners ViscoPlus 3000, ViscoPlus 3030 and ViscoPlus 3060 which are beneficial to industrial groups;
the emulsifier is a nonionic surfactant, and particularly preferably is one or more of BD-405 and EH-9 of the Dow company and EnviroGem AD01 of the winning industry group;
the base material wetting agent is polyether modified polysiloxane wetting agent, and particularly preferably is one or more of Tego-245, Tego-270, Twin-4100, BYK-346 and BYK-333 of Bick company which are derived from industrial groups;
the bactericide is an isothiazolinone-containing biocide, and is particularly preferably one or more of Bioban 586, Skane M8, Defross CP62 and Defross M11S of Dow corporation.
The preparation method of the water-based woodware sealing primer comprises the following steps:
1) adding the water-based self-crosslinking acrylic emulsion into a container 1, starting low-speed stirring, adding a pH regulator, a defoaming agent and 0-15% of water, keeping stirring at low speed for 5-8min, then adjusting the rotating speed to high-speed stirring, adding titanium dioxide, and keeping stirring at high speed;
2) adding the film-forming aid and the rest water into a container 2, adjusting the rotating speed to a high speed, keeping stirring at the high speed for 20-30min, stopping stirring to obtain a film-forming aid pre-dispersion liquid, and adding the film-forming aid pre-dispersion liquid into the container 1;
3) adjusting the stirring speed in the container 1 to be medium-speed stirring, sequentially adding the cationic monomer modified water-based acrylic emulsion, the internal crosslinking agent, the anti-bleeding assistant, the polishing assistant, the base material wetting agent and the bactericide, keeping the medium-speed stirring, and filtering to obtain the water-based wood sealing primer;
the rotating speeds of the low-speed stirring, the medium-speed stirring and the high-speed stirring are respectively 500r/min, 1000r/min and 1500r/min, respectively.
Preferably, the adding of the pH regulator, the defoaming agent and the 0-15% of water in the step 1) further comprises adding 0-0.4% of a thickening agent; the rest of the thickening agent is added during the feeding in the step 3); adding the film-forming aid and the remaining water into the container 2) in the step 2) further comprises adding an emulsifier; keeping the high-speed stirring in the step 1) for 10-15 min; the time for adding the pre-dispersion liquid of the film-forming additive into the container 1 in the step 2) is 10-15 min; keeping the stirring at the medium speed in the step 3) for 8-10 min; the filtration is carried out by 240# filter cloth.
Compared with the prior art, the invention has the following advantages:
1) the invention adopts the water-based acrylic emulsion which is modified by cationic monomer and still shows anionic property on the whole as a main film forming substance, and is assisted with the water-based self-crosslinking acrylic emulsion with the Minimum Film Forming Temperature (MFFT) between 30 ℃ and 50 ℃ for blending modification, so that the finally prepared seal primer has excellent storage stability, good sanding property and hardness building speed.
2) The waterborne wood sealing primer prepared by the invention endows a paint film with excellent early anti-bleeding effect under the synergistic metal complexing effect of the film-forming resin with a cationic structural unit, the anti-bleeding assistant and aluminum (or zirconium) on the surface of rutile titanium dioxide.
3) The internal crosslinking agent with the epoxy functional group is added into the system of the waterborne wood sealing primer provided by the invention, and the internal crosslinking agent can slowly perform crosslinking reaction with the residual hydrophilic group-COOH in the acrylic emulsion in the drying and curing process of a paint film, so that the final crosslinking density and water resistance of the paint film are improved, and the later-stage exudation of the hydrophilic pigment in wood is effectively prevented.
4) The water-based woodware seal primer provided by the invention finally shows a semi-transparent white coating effect, white pigment in the coating effectively permeates into a wood conduit after first-degree construction, and the whole uniform white coating effect is shown after the next water-based white primer is recoated. And adopt the construction of traditional transparent seal primer then cause transparent seal primer to flow into the timber pipe depths and can not be fully polished and the hydrophobicity that brings, just so can certainly appear black hole form pinhole problem after next application waterborne white primer. Therefore, the water-based wood sealing primer provided by the invention can effectively reduce the procedures of strict polishing, repeated repair and recoating and the like caused by the occurrence of black-hole pinholes, has higher construction convenience, and can obviously save the labor cost for coating.
Detailed Description
The present invention will be further described with reference to the following examples for better understanding of the present invention, but the embodiments of the present invention are not limited thereto.
Example 1
1. The water-based woodware seal primer comprises the following components in percentage by weight:
TABLE 1A waterborne Wood sealing primer Components and amounts
2. Preparation method of water-based woodware sealing primer
(1) Adding waterborne self-crosslinking acrylic emulsion ROSHIELD 3311 into a container 1 with a stirring device, starting low-speed stirring at 400rpm, sequentially adding a pH regulator AMP-95, a defoaming agent Tego-810, 0.1 part of a thickening agent Tego-3030 and 0.85 part of water, keeping low-speed stirring for 5min, adjusting the rotating speed to 1500rpm, adding titanium dioxide CR-826, and keeping high-speed stirring for 15 min;
(2) taking another set of container 2 with a stirring device, sequentially adding dipropylene glycol butyl ether, dipropylene glycol methyl ether, an emulsifier BD-405 and 10 parts of water, adjusting the rotation speed to 1500rpm, keeping stirring at the high speed for 25min, stopping stirring to obtain a film-forming aid pre-dispersion liquid, slowly adding the film-forming aid pre-dispersion liquid into the container 1, and controlling the duration of the addition from the beginning to be 10 min;
(3) adjusting the stirring speed in the container 1 to a medium speed of 1000rpm, sequentially adding the cationic monomer modified water-based acrylic emulsion ECS-4907, an internal crosslinking agent Coatosil2287, an anti-bleeding assistant L-44, a polishing assistant SAK-ZS-PLB, a base material wetting agent Tego-4100, a bactericide Bioban 586, Defros M11S and the balance of a thickener Tego-3030, stirring at the medium speed for 8min, and filtering through No. 240 filter cloth to obtain the water-based wood sealing primer.
3. Comprehensive performance of water-based woodware sealing primer
The prepared waterborne wood sealing primer is subjected to various performance tests according to GB/T23999(D), and the results are shown in Table 1b as table comprehensive properties:
TABLE 1b waterborne Wood sealing primer combination Properties
As can be seen from the table above, the comprehensive performance of the waterborne wood sealing primer prepared by the embodiment is superior to that of the national standard GB/T23999(D) -2009, and the storage stability and the sanding property of the waterborne wood sealing primer both reach the performance standard of the conventional waterborne clear primer.
The waterborne wood sealing primer prepared in the embodiment is subjected to a test of the anti-seepage performance of various dark color substrates, and the test process comprises the following steps: the method comprises the following steps of sanding a substrate (removing burrs by No. 240 sand paper, completely removing dust) → spraying of the water-based woodware sealing primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h) → polishing of the primer (grinding and removing burrs by No. 320 sand paper), completely removing dust) → spraying of the conventional water-based anionic acrylic emulsion system white primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h, then turning to normal temperature and drying for 16h) → to-be-measured.
Testing the test plate by using a spectrocolorimeter, recording initial color values, placing the test plate in an environment of 25 ℃ for 1d, 7d and 30d, and in an environment of 50 ℃ for 1d, 3d and 7d, recording respective color difference change values, and summarizing the color difference change values as shown in the following table 1 c:
TABLE 1c bleed-resistant data Δ E values for waterborne wood sealer primers
From the table data, it can be seen that each performance index of the water-based seal primer of the embodiment reaches and is superior to national standard GB/T23999(D), and the water-based seal primer has the advantages of good storage stability, good sanding property, excellent anti-bleeding performance, convenient construction and the like, and shows excellent anti-bleeding effect on various base materials, and the anti-bleeding performance of the water-based seal primer does not change greatly with the lapse of time no matter in a normal temperature environment of 25 ℃ or a high temperature environment of 50 ℃, which shows that the water-based seal primer prepared by the embodiment has good anti-bleeding seal effect in the later period. This is because: the water-based seal primer of the embodiment takes water-based acrylic emulsion ECS-4907 modified by partial cationic monomers as a main film forming substance, is simultaneously blended and modified with water-based self-crosslinking acrylic emulsion ROSHIELD 3311, and is prepared by adding rutile titanium dioxide CR826 and anti-bleeding assistant L-44 of which the surfaces are modified by aluminum (or zirconium), and a paint film formed by final construction of the seal primer of the embodiment has excellent early anti-bleeding effect because film-forming resin has a cationic structure unit, the anti-bleeding assistant and aluminum (or zirconium) elements on the surface of rutile titanium dioxide exert synergistic metal complexing effect; taking the anti-bleeding data on sapelli wood presented in table 1c as an example, the initial color difference value measured by a spectrophotometer after coating is 0.21, and the value is only slightly increased during the subsequent placement on the test substrate, specifically, the values of 7d and 30d both at normal temperature are 0.26, even if the 50 ℃ manual accelerated test 7d (default industry is equivalent to the placement under daily use environment for 1 year) is only 0.26, while the blank sample is significantly increased from 5.42 to 9.81, which shows that the embodiment of the present invention can effectively prevent the late-stage bleeding of the hydrophilic pigment in the wood, because the internal cross-linking agent Coatosil2287 with an epoxy functional group is added in the embodiment, and can slowly perform a cross-linking reaction with the hydrophilic group-COOH remaining in the acrylic emulsion during the drying and curing process of the paint film.
The same spraying equipment system is adopted in the testing process of the anti-bleeding coating in the embodiment, the spraying equipment system does not need to be replaced after the water-based wood sealing primer provided by the embodiment is sprayed, the water-based wood sealing primer can be put into spraying construction of other water-based products after being cleaned by tap water, and the risk of blockage and scrapping of the spraying system cannot occur, so that the problem of construction convenience caused by the water-based cationic sealing primer provided in the Chinese patent CN103642342B is solved fundamentally.
Example 2
1. The water-based woodware seal primer comprises the following components in percentage by weight:
TABLE 2A waterborne Wood sealing primer Components and amounts
2. Preparation method of water-based woodware sealing primer
(1) Adding aqueous self-crosslinking acrylic emulsion Setaqua 6718 into a container 1 with a stirring device, starting low-speed stirring at 300rpm, sequentially adding pH regulator DMEA, defoaming agent BYK-028 and 0.1 part of thickener Tego-3060, keeping low-speed stirring for 5min, regulating the rotating speed to high-speed 1200rpm, adding titanium dioxide
R-900, keeping stirring at high speed for 10 min;
(2) taking another set of container 2 with a stirring device, sequentially adding dipropylene glycol butyl ether, dipropylene glycol methyl ether and 10 parts of water, adjusting the rotating speed to high speed of 1200rpm, keeping stirring at the high speed for 20min, stopping stirring to obtain a film-forming aid pre-dispersion liquid, slowly adding the film-forming aid pre-dispersion liquid into the container 1, and controlling the duration of the addition from the beginning to be 10 min;
(3) adjusting the stirring speed in the container 1 to be 800rpm at a medium speed, and sequentially adding the cationic monomer modified water-based acrylic emulsion Joncryl 8227 and the internal crosslinking agent
HYDROSIL 2926, anti-bleeding additive L-66, grinding additive MJ-555, and base material wetting agent BYK346, bactericide Defross CP62, Skane M8 and the balance of thickener Tego-3060, stirring at medium speed for 10min, and filtering through No. 240 filter cloth to obtain the waterborne wood sealing primer.
3. Comprehensive performance of water-based woodware sealing primer
The prepared waterborne wood sealing primer is subjected to various performance tests according to GB/T23999(D), and the comprehensive performance of the results is shown in Table 2 b:
TABLE 2b waterborne Wood sealing primer combination Properties
| Detecting items | Water-based woodenware seal primer | Comparison with standard requirements | Test method |
| In the container state | No abnormality | No hard block after even stirring | GB/T 23999-2009 |
| Appearance of coating film | The appearance of the coating film is normal | - | GB/T 23999-2009 |
| Without volatile matter/%) | 37 | ≥30 | GB/T 1725-2007 |
| Surface drying time/min | 25 | ≤30 | GB/T1728-1979 surface drying method |
| Actual drying time/h | 4 | ≤6 | GB/T1728-1979 solid dry method |
| Storage stability (50 ℃, 7d) | No abnormal and no apparent after thickening | No abnormality | GB/T 23999-2009 |
| Sanding property | Easy-to-polish and non-stick sand paper | Easy to polish | GB/T 23999-2009 |
| Adhesion/grade | 0 | ≤1 | GB/T 9286-1998 |
As can be seen from the table above, the comprehensive performance of the waterborne wood sealing primer prepared by the embodiment is superior to that of the national standard GB/T23999(D) -2009, and the storage stability and the sanding property of the waterborne wood sealing primer both reach the performance standard of the conventional waterborne clear primer.
The waterborne wood sealing primer prepared in the embodiment is subjected to a test of the anti-seepage performance of various dark color substrates, and the test process comprises the following steps: the method comprises the following steps of sanding a substrate (removing burrs by No. 240 sand paper, completely removing dust) → spraying of the water-based woodware sealing primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h) → polishing of the primer (grinding and removing burrs by No. 320 sand paper), completely removing dust) → spraying of the conventional water-based anionic acrylic system white primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h, then turning to normal temperature and drying for 16h) → to-be-measured.
Testing the test plate by using a spectrocolorimeter, recording initial color values, placing the test plate in an environment of 25 ℃ for 1d, 7d and 30d, and in an environment of 50 ℃ for 1d, 3d and 7d, recording respective color difference change values, and summarizing the color difference change values as shown in the following table 2 c:
TABLE 2c bleed-resistant data Δ E values for waterborne wood sealer primers
Example 3
1. The water-based woodware seal primer comprises the following components in percentage by weight:
TABLE 3A waterborne Wood sealing primer Components and amounts
2. Preparation method of water-based woodware sealing primer
(1) Mixing the aqueous self-crosslinking acrylic emulsion
4401 adding into a container 1 with a stirring device, stirring at low speed of 500rpm, sequentially adding pH regulator TEA and defoamer TEGO-902W, stirring at low speed for 8min, adjusting the rotation speed to 1500rpm, adding Ningbo Xinfu NTR-606, and stirring at high speed for 15 min;
(2) taking another set of container 2 with a stirring device, sequentially adding dipropylene glycol butyl ether and 10 parts of water, adjusting the rotating speed to high speed of 1200rpm, keeping stirring at the high speed for 30min, stopping stirring to obtain a film-forming aid pre-dispersion liquid, slowly adding the film-forming aid pre-dispersion liquid into the container 1, and controlling the duration of the addition from the beginning to be 15 min;
(3) adjusting the stirring speed in the container 1 to be 900rpm at a medium speed, and sequentially adding the cationic monomer modified water-based acrylic emulsion
4312. The water-based wood sealing primer is prepared by stirring an internal cross-linking agent MP200, an anti-bleeding aid L-77, a polishing aid Hydropalat SL 3697, a base material wetting agent Tego-270, bactericides Bioban 586 and Skane M8 at a medium speed for 9min and filtering the mixture through No. 240 filter cloth.
3. Comprehensive performance of water-based woodware sealing primer
The prepared waterborne wood sealing primer is subjected to various performance tests according to GB/T23999(D), and the results are shown in Table 3b as table comprehensive properties:
TABLE 3b waterborne Wood seal primer combination Properties
| Detecting items | Water-based woodenware seal primer | Comparison with standard requirements | Test method |
| In the container state | No abnormality | No hard block after even stirring | GB/T 23999-2009 |
| Appearance of coating film | The appearance of the coating film is normal | - | GB/T 23999-2009 |
| Without volatile matter/%) | 35 | ≥30 | GB/T 1725-2007 |
| Surface drying time/min | 25 | ≤30 | GB/T1728-1979 surface drying method |
| Actual drying time/h | 4 | ≤6 | GB/T1728-1979 solid dry method |
| Storage stability (50 ℃, 7d) | No abnormal and no apparent after thickening | No abnormality | GB/T 23999-2009 |
| Sanding property | Easy-to-polish and non-stick sand paper | Easy to polish | GB/T 23999-2009 |
| Adhesion/grade | 0 | ≤1 | GB/T 9286-1998 |
As can be seen from the table above, the comprehensive performance of the waterborne wood sealing primer prepared by the embodiment is superior to that of the national standard GB/T23999(D) -2009, and the storage stability and the sanding property of the waterborne wood sealing primer both reach the performance standard of the conventional waterborne clear primer.
The waterborne wood sealing primer prepared in the embodiment is subjected to a test of the anti-seepage performance of various dark color substrates, and the test process comprises the following steps: the method comprises the following steps of sanding a substrate (removing burrs by No. 240 sand paper, completely removing dust) → spraying of the water-based woodware sealing primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h) → polishing of the primer (grinding and removing burrs by No. 320 sand paper), completely removing dust) → spraying of the conventional water-based anionic acrylic system white primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h, then turning to normal temperature and drying for 16h) → to-be-measured.
Testing the test plate by using a spectrocolorimeter, recording initial color values, placing the test plate in an environment of 25 ℃ for 1d, 7d and 30d, and in an environment of 50 ℃ for 1d, 3d and 7d, recording respective color difference change values, and summarizing the color difference change values as shown in the following table 3 c:
TABLE 3c bleed-resistant data Δ E values for waterborne wood sealer primers
Example 4
1. The water-based woodware seal primer comprises the following components in percentage by weight:
TABLE 4a waterborne Wood sealing primer Components and amounts
2. Preparation method of water-based woodware sealing primer
(1) Adding the water-based self-crosslinking acrylic emulsion Joncryl 8330 into a container 1 with a stirring device, starting low-speed stirring at 500rpm, and sequentially adding a pH regulator AMP-95 and a defoaming agentTEGO-822 and 15 parts of water, stirring at low speed for 8min, adjusting the rotation speed to 1500rpm, and adding titanium dioxide
BLR-895, stirring at high speed for 15 min;
(2) taking another set of container 2 with a stirring device, sequentially adding dipropylene glycol butyl ether, an emulsifier EH-9 and 10 parts of water, adjusting the rotation speed to high speed of 1200rpm, keeping stirring at the high speed for 30min, stopping stirring to obtain a film-forming aid pre-dispersion liquid, slowly adding the film-forming aid pre-dispersion liquid into the container 1, and controlling the duration of the addition from the beginning to be 15 min;
(3) adjusting the stirring speed in the container 1 to be 900rpm at a medium speed, and sequentially adding the cationic monomer modified water-based acrylic emulsion HG-4810 and the internal crosslinking agent
HYDROSIL 2926, an anti-bleeding assistant L-44, a polishing assistant Hydropalat SL 3697, a base material wetting agent BYK-333, a bactericide Bioban 586 and Skane M8, stirring at a medium speed for 8min, and filtering through No. 240 filter cloth to obtain the waterborne wood sealing primer.
3. Comprehensive performance of water-based woodware sealing primer
The prepared waterborne wood sealing primer is subjected to various performance tests according to GB/T23999(D), and the comprehensive performance of the results is shown in Table 4 b:
TABLE 4b waterborne Wood sealing primer combination Properties
| Detecting items | Water-based woodenware seal primer | Comparison with standard requirements | Test method |
| In the container state | No abnormality | No hard block after even stirring | GB/T 23999-2009 |
| Appearance of coating film | The appearance of the coating film is normal | - | GB/T 23999-2009 |
| Without volatile matter/%) | 32.8 | ≥30 | GB/T 1725-2007 |
| Surface drying time/min | 25 | ≤30 | GB/T1728-1979 surface drying method |
| Actual drying time/h | 4 | ≤6 | GB/T1728-1979 solid dry method |
| Storage stability (50 ℃, 7d) | No abnormal and no apparent after thickening | No abnormality | GB/T 23999-2009 |
| Sanding property | Easy-to-polish and non-stick sand paper | Easy to polish | GB/T 23999-2009 |
| Adhesion/grade | 0 | ≤1 | GB/T 9286-1998 |
As can be seen from the table above, the comprehensive performance of the waterborne wood sealing primer prepared by the embodiment is superior to that of the national standard GB/T23999(D) -2009, and the storage stability and the sanding property of the waterborne wood sealing primer both reach the performance standard of the conventional waterborne clear primer.
The waterborne wood sealing primer prepared in the embodiment is subjected to a test of the anti-seepage performance of various dark color substrates, and the test process comprises the following steps: the method comprises the following steps of sanding a substrate (removing burrs by No. 240 sand paper, completely removing dust) → spraying of the water-based woodware sealing primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h) → polishing of the primer (grinding and removing burrs by No. 320 sand paper), completely removing dust) → spraying of the conventional water-based anionic acrylic system white primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h, then turning to normal temperature and drying for 16h) → to-be-measured.
Testing the test plate by using a spectrocolorimeter, recording initial color values, placing the test plate in an environment of 25 ℃ for 1d, 7d and 30d, and in an environment of 50 ℃ for 1d, 3d and 7d, recording respective color difference change values, and summarizing the color difference change values as shown in the following table 4 c:
TABLE 4c bleed-resistant data Δ E values for waterborne wood sealer primers
Example 5
1. The water-based woodware seal primer comprises the following components in percentage by weight:
TABLE 5A waterborne Wood sealing primer Components and amounts
2. Preparation method of water-based woodware sealing primer
(1) Mixing the aqueous self-crosslinking acrylic emulsion
4501 adding into container 1 with stirring device, stirring at low speed of 500rpm, sequentially adding pH regulator AMP-95, defoamer TEGO-822 and 15 parts of water, stirring at low speed for 8min, adjusting rotation speed to 1500rpm, and adding titanium white powder
BLR-895, stirring at high speed for 15 min;
(2) taking another set of container 2 with a stirring device, sequentially adding dipropylene glycol butyl ether, an emulsifier EH-9 and 10 parts of water, adjusting the rotation speed to high speed of 1200rpm, keeping stirring at the high speed for 30min, stopping stirring to obtain a film-forming aid pre-dispersion liquid, slowly adding the film-forming aid pre-dispersion liquid into the container 1, and controlling the duration of the addition from the beginning to be 15 min;
(3) adjusting the stirring speed in the container 1 to be 900rpm at a medium speed, and sequentially adding the cationic monomer modified water-based acrylic emulsion HG-4810 and the internal crosslinking agent
HYDROSIL 2926, an anti-bleeding assistant L-44, a polishing assistant Hydropalat SL 3697, a base material wetting agent BYK-333, a bactericide Bioban 586 and Skane M8, stirring at a medium speed for 8min, and filtering through No. 240 filter cloth to obtain the waterborne wood sealing primer.
3. Comprehensive performance of water-based woodware sealing primer
The prepared waterborne wood sealing primer is subjected to various performance tests according to GB/T23999(D), and the comprehensive performance of the results is shown in Table 5 b:
TABLE 5b waterborne Wood sealing primer combination Properties
| Detecting items | Water-based woodenware seal primer | Comparison with standard requirements | Test method |
| In the container state | No abnormality | No hard block after even stirring | GB/T 23999-2009 |
| Appearance of coating film | The appearance of the coating film is normal | - | GB/T 23999-2009 |
| Without volatile matter/%) | 32.8 | ≥30 | GB/T 1725-2007 |
| Surface drying time/min | 25 | ≤30 | GB/T1728-1979 surface drying method |
| Actual drying time/h | 4 | ≤6 | GB/T1728-1979 solid dry method |
| Storage stability (50 ℃, 7d) | No abnormal and no apparent after thickening | No abnormality | GB/T 23999-2009 |
| Sanding property | Easy-to-polish and non-stick sand paper | Easy to polish | GB/T 23999-2009 |
| Adhesion/grade | 0 | ≤1 | GB/T 9286-1998 |
As can be seen from the table above, the comprehensive performance of the waterborne wood sealing primer prepared by the embodiment is superior to that of the national standard GB/T23999(D) -2009, and the storage stability and the sanding property of the waterborne wood sealing primer both reach the performance standard of the conventional waterborne clear primer.
The waterborne wood sealing primer prepared in the embodiment is subjected to a test of the anti-seepage performance of various dark color substrates, and the test process comprises the following steps: the method comprises the following steps of sanding a substrate (removing burrs by No. 240 sand paper, completely removing dust) → spraying of the water-based woodware sealing primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h) → polishing of the primer (grinding and removing burrs by No. 320 sand paper), completely removing dust) → spraying of the conventional water-based anionic acrylic system white primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h, then turning to normal temperature and drying for 16h) → to-be-measured.
Testing the test plate by using a spectrocolorimeter, recording initial color values, placing the test plate in an environment of 25 ℃ for 1d, 7d and 30d, and in an environment of 50 ℃ for 1d, 3d and 7d, recording respective color difference change values, and summarizing the color difference change values as shown in the following table 5 c:
TABLE 5c bleed data Δ E values for waterborne wood sealer primers
Example 6
1. The water-based woodware seal primer comprises the following components in percentage by weight:
TABLE 6A waterborne Wood sealing primer Components and amounts
2. Preparation method of water-based woodware sealing primer
(1) Mixing the aqueous self-crosslinking acrylic emulsion
4501 adding into container 1 with stirring device, stirring at low speed of 500rpm, sequentially adding pH regulator AMP-95, defoamer TEGO-822 and 15 parts of water, stirring at low speed for 8min, adjusting rotation speed to 1500rpm, and adding titanium white powder
BLR-895, stirring at high speed for 15 min;
(2) taking another set of container 2 with a stirring device, sequentially adding dipropylene glycol butyl ether, an emulsifier EH-9 and 10 parts of water, adjusting the rotation speed to high speed of 1200rpm, keeping stirring at the high speed for 30min, stopping stirring to obtain a film-forming aid pre-dispersion liquid, slowly adding the film-forming aid pre-dispersion liquid into the container 1, and controlling the duration of the addition from the beginning to be 15 min;
(3) adjusting the stirring speed in the vessel 1When the speed is changed to 900rpm, the cationic monomer modified water-based acrylic emulsion HG-4810 and the internal crosslinking agent are added in sequence
HYDROSIL 2926, an anti-bleeding assistant L-44, a polishing assistant Hydropalat SL 3697, a base material wetting agent Tego-245, a bactericide Bioban 586 and Skane M8, stirring at a medium speed for 8min, and filtering through No. 240 filter cloth to obtain the waterborne wood sealing primer.
3. Comprehensive performance of water-based woodware sealing primer
The prepared waterborne wood sealing primer is subjected to various performance tests according to GB/T23999(D), and the comprehensive performance of the results is shown in Table 6 b:
TABLE 6b waterborne Wood sealing primer combination Properties
| Detecting items | Water-based woodenware seal primer | Comparison with standard requirements | Test method |
| In the container state | No abnormality | No hard block after even stirring | GB/T 23999-2009 |
| Appearance of coating film | The appearance of the coating film is normal | - | GB/T 23999-2009 |
| Without volatile matter/%) | 32.8 | ≥30 | GB/T 1725-2007 |
| Surface drying time/min | 25 | ≤30 | GB/T1728-1979 surface drying method |
| Actual drying time/h | 4 | ≤6 | GB/T1728-1979 solid dry method |
| Storage stability (50 ℃, 7d) | No abnormal and no apparent after thickening | No abnormality | GB/T 23999-2009 |
| Sanding property | Easy-to-polish and non-stick sand paper | Easy to polish | GB/T 23999-2009 |
| Adhesion/grade | 0 | ≤1 | GB/T 9286-1998 |
As can be seen from the table above, the comprehensive performance of the waterborne wood sealing primer prepared by the embodiment is superior to that of the national standard GB/T23999(D) -2009, and the storage stability and the sanding property of the waterborne wood sealing primer both reach the performance standard of the conventional waterborne clear primer.
The waterborne wood sealing primer prepared in the embodiment is subjected to a test of the anti-seepage performance of various dark color substrates, and the test process comprises the following steps: the method comprises the following steps of sanding a substrate (removing burrs by No. 240 sand paper, completely removing dust) → spraying of the water-based woodware sealing primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h) → polishing of the primer (grinding and removing burrs by No. 320 sand paper), completely removing dust) → spraying of the conventional water-based anionic acrylic system white primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h, then turning to normal temperature and drying for 16h) → to-be-measured.
Testing the test plate by using a spectrocolorimeter, recording initial color values, placing the test plate in an environment of 25 ℃ for 1d, 7d and 30d, and in an environment of 50 ℃ for 1d, 3d and 7d, recording respective color difference change values, and summarizing the color difference change values as shown in the following table 6 c:
TABLE 6c bleed-resistant data Δ E values for waterborne wood sealer primers
Example 7
1. The water-based woodware seal primer comprises the following components in percentage by weight:
TABLE 7a waterborne wood sealer compositions and contents
2. Preparation method of water-based woodware sealing primer
(1) Mixing the aqueous self-crosslinking acrylic emulsion
4501 adding into container 1 with stirring device, stirring at low speed of 500rpm, and stirringAdding a pH regulator AMP-95, a defoaming agent TEGO-822 and 15 parts of water, stirring at a low speed for 8min, adjusting the rotation speed to 1500rpm, and adding titanium dioxide
R-902+ and keeping stirring at high speed for 15 min;
(2) sequentially adding propylene glycol butyl ether, an emulsifier EnviroGem AD01 and 10 parts of water into another container 2 with a stirring device, adjusting the rotation speed to high speed of 1200rpm, keeping stirring at the high speed for 30min, stopping stirring to obtain a film-forming aid pre-dispersion liquid, slowly adding the film-forming aid pre-dispersion liquid into the container 1, and controlling the duration of the addition from the beginning to 15 min;
(3) adjusting the stirring speed in the container 1 to be 900rpm at a medium speed, and sequentially adding the cationic monomer modified water-based acrylic emulsion HG-4810 and the internal crosslinking agent
HYDROSIL 2926, an anti-bleeding assistant L-44, a polishing assistant Hydropalat SL 3697, a base material wetting agent Tego-245, a bactericide Bioban 586 and Skane M8, stirring at a medium speed for 8min, and filtering through No. 240 filter cloth to obtain the waterborne wood sealing primer.
3. Comprehensive performance of water-based woodware sealing primer
The prepared waterborne wood sealing primer is subjected to various performance tests according to GB/T23999(D), and the comprehensive performance of the results is shown in Table 7 b:
TABLE 7b waterborne Wood sealing primer combination Properties
| Detecting items | Water-based woodenware seal primer | Comparison with standard requirements | Test method |
| In the container state | No abnormality | No hard block after even stirring | GB/T 23999-2009 |
| Appearance of coating film | The appearance of the coating film is normal | - | GB/T 23999-2009 |
| Without volatile matter/%) | 32.8 | ≥30 | GB/T 1725-2007 |
| Surface drying time/min | 25 | ≤30 | GB/T1728-1979 surface drying method |
| Actual drying time/h | 4 | ≤6 | GB/T1728-1979 solid dry method |
| Storage stability (50 ℃, 7d) | No abnormal and no apparent after thickening | No abnormality | GB/T 23999-2009 |
| Sanding property | Easy-to-polish and non-stick sand paper | Easy to polish | GB/T 23999-2009 |
| Adhesion/grade | 0 | ≤1 | GB/T 9286-1998 |
As can be seen from the table above, the comprehensive performance of the waterborne wood sealing primer prepared by the embodiment is superior to that of the national standard GB/T23999(D) -2009, and the storage stability and the sanding property of the waterborne wood sealing primer both reach the performance standard of the conventional waterborne clear primer.
The waterborne wood sealing primer prepared in the embodiment is subjected to a test of the anti-seepage performance of various dark color substrates, and the test process comprises the following steps: the method comprises the following steps of sanding a substrate (removing burrs by No. 240 sand paper, completely removing dust) → spraying of the water-based woodware sealing primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h) → polishing of the primer (grinding and removing burrs by No. 320 sand paper), completely removing dust) → spraying of the conventional water-based anionic acrylic system white primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h, then turning to normal temperature and drying for 16h) → to-be-measured.
Testing the test plate by using a spectrocolorimeter, recording initial color values, placing the test plate in an environment of 25 ℃ for 1d, 7d and 30d, and in an environment of 50 ℃ for 1d, 3d and 7d, recording respective color difference change values, and summarizing the color difference change values as shown in the following table 7 c:
TABLE 7c bleed-resistant data Δ E values for waterborne wood sealer primers
Example 8
1. The water-based woodware seal primer comprises the following components in percentage by weight:
TABLE 8A waterborne Wood sealing primer Components and amounts
2. Preparation method of water-based woodware sealing primer
(1) Mixing the aqueous self-crosslinking acrylic emulsion
4501 adding into container 1 with stirring device, stirring at low speed of 500rpm, sequentially adding pH regulator AMP-95, defoamer TEGO-904W and 5 parts of water, stirring at low speed for 8min, adjusting rotation speed to 1500rpm, adding titanium white powder
R-902+ and keeping stirring at high speed for 15 min;
(2) taking another set of container 2 with a stirring device, sequentially adding dipropylene glycol butyl ether, an emulsifier EnviroGem AD01 and 10 parts of water, adjusting the rotation speed to high speed of 1200rpm, keeping stirring at the high speed for 30min, stopping stirring to obtain a film-forming aid pre-dispersion liquid, slowly adding the film-forming aid pre-dispersion liquid into the container 1, and controlling the duration of the addition from the beginning to be 15 min;
(3) adjusting the stirring speed in the container 1 to 900rpm at a medium speed, and sequentially adding the cationic monomer modified waterborne acrylic emulsion ECS-4907 and the internal crosslinking agent
HYDROSIL 2926, an anti-bleeding assistant L-44, a polishing assistant Hydropalat SL 3697, a base material wetting agent Tego-245, a bactericide Bioban 586 and Skane M8, stirring at a medium speed for 8min, and filtering through No. 240 filter cloth to obtain the waterborne wood sealing primer.
3. Comprehensive performance of water-based woodware sealing primer
The prepared waterborne wood sealing primer is subjected to various performance tests according to GB/T23999(D), and the comprehensive performance of the results is shown in Table 8 b:
TABLE 8b waterborne Wood sealing primer combination Properties
| Detecting items | Water-based woodenware seal primer | Comparison with standard requirements | Test method |
| In the container state | No abnormality | No hard block after even stirring | GB/T 23999-2009 |
| Appearance of coating film | The appearance of the coating film is normal | - | GB/T 23999-2009 |
| Without volatile matter/%) | 32.8 | ≥30 | GB/T 1725-2007 |
| Surface drying time/min | 25 | ≤30 | GB/T1728-1979 surface drying method |
| Actual drying time/h | 4 | ≤6 | GB/T1728-1979 solid dry method |
| Storage stability (50 ℃, 7d) | No abnormal and no apparent after thickening | No abnormality | GB/T 23999-2009 |
| Sanding property | Easy-to-polish and non-stick sand paper | Easy to polish | GB/T 23999-2009 |
| Adhesion/grade | 0 | ≤1 | GB/T 9286-1998 |
As can be seen from the table above, the comprehensive performance of the waterborne wood sealing primer prepared by the embodiment is superior to that of the national standard GB/T23999(D) -2009, and the storage stability and the sanding property of the waterborne wood sealing primer both reach the performance standard of the conventional waterborne clear primer.
The waterborne wood sealing primer prepared in the embodiment is subjected to a test of the anti-seepage performance of various dark color substrates, and the test process comprises the following steps: the method comprises the following steps of sanding a substrate (removing burrs by No. 240 sand paper, completely removing dust) → spraying of the water-based woodware sealing primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h) → polishing of the primer (grinding and removing burrs by No. 320 sand paper), completely removing dust) → spraying of the conventional water-based anionic acrylic system white primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h, then turning to normal temperature and drying for 16h) → to-be-measured.
Testing the test plate by using a spectrocolorimeter, recording initial color values, placing the test plate in an environment of 25 ℃ for 1d, 7d and 30d, and in an environment of 50 ℃ for 1d, 3d and 7d, recording respective color difference change values, and summarizing the color difference change values as shown in the following table 8 c:
TABLE 8c bleed-resistant data Δ E values for waterborne wood sealer primers
Example 9
1. The water-based woodware seal primer comprises the following components in percentage by weight:
TABLE 9a waterborne Wood sealing primer Components and amounts
2. Preparation method of water-based woodware sealing primer
(1) Adding waterborne self-crosslinking acrylic emulsion ROSHIELD 3311 into a container 1 with a stirring device, starting low-speed stirring at 500rpm, sequentially adding pH regulator AMP-95, defoaming agent BYK-024 and 5 parts of water, keeping stirring at low speed for 8min, adjusting the rotation speed to 1500rpm, adding titanium dioxide
R-902+ and keeping stirring at high speed for 15 min;
(2) taking another set of container 2 with a stirring device, sequentially adding dipropylene glycol butyl ether, an emulsifier EnviroGem AD01 and 10 parts of water, adjusting the rotation speed to high speed of 1200rpm, keeping stirring at the high speed for 30min, stopping stirring to obtain a film-forming aid pre-dispersion liquid, slowly adding the film-forming aid pre-dispersion liquid into the container 1, and controlling the duration of the addition from the beginning to be 15 min;
(3) adjusting the stirring speed in the container 1 to 900rpm at a medium speed, and sequentially adding the cationic monomer modified waterborne acrylic emulsion ECS-4907 and the internal crosslinking agent
HYDROSIL 2926, an anti-bleeding assistant L-44, a polishing assistant Hydropalat SL 3697, a base material wetting agent Tego-245, a bactericide Defross CP62 and Skane M8, stirring at a medium speed for 8min, and filtering through No. 240 filter cloth to obtain the waterborne wood sealing primer.
3. Comprehensive performance of water-based woodware sealing primer
The prepared waterborne wood sealing primer is subjected to various performance tests according to GB/T23999(D), and the comprehensive performance of the results is shown in Table 9 b:
TABLE 9b waterborne Wood sealing primer combination Properties
| Detecting items | Water-based woodenware seal primer | Comparison with standard requirements | Test method |
| In the container state | No abnormality | No hard block after even stirring | GB/T 23999-2009 |
| Appearance of coating film | The appearance of the coating film is normal | - | GB/T 23999-2009 |
| Without volatile matter/%) | 32.8 | ≥30 | GB/T 1725-2007 |
| Surface drying time/min | 25 | ≤30 | GB/T1728-1979 surface drying method |
| Actual drying time/h | 4 | ≤6 | GB/T1728-1979 solid dry method |
| Storage stability (50 ℃, 7d) | No abnormal and no apparent after thickening | No abnormality | GB/T 23999-2009 |
| Sanding property | Easy-to-polish and non-stick sand paper | Easy to polish | GB/T 23999-2009 |
| Adhesion/grade | 0 | ≤1 | GB/T 9286-1998 |
As can be seen from the table above, the comprehensive performance of the waterborne wood sealing primer prepared by the embodiment is superior to that of the national standard GB/T23999(D) -2009, and the storage stability and the sanding property of the waterborne wood sealing primer both reach the performance standard of the conventional waterborne clear primer.
The waterborne wood sealing primer prepared in the embodiment is subjected to a test of the anti-seepage performance of various dark color substrates, and the test process comprises the following steps: the method comprises the following steps of sanding a substrate (removing burrs by No. 240 sand paper, completely removing dust) → spraying of the water-based woodware sealing primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h) → polishing of the primer (grinding and removing burrs by No. 320 sand paper), completely removing dust) → spraying of the conventional water-based anionic acrylic system white primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h, then turning to normal temperature and drying for 16h) → to-be-measured.
Testing the test plate by using a spectrocolorimeter, recording initial color values, placing the test plate in an environment of 25 ℃ for 1d, 7d and 30d, and in an environment of 50 ℃ for 1d, 3d and 7d, recording respective color difference change values, and summarizing the color difference change values as shown in the following table 9 c:
TABLE 9c bleed-resistant data Δ E values for waterborne wood sealer primers
Example 10
1. The water-based woodware seal primer comprises the following components in percentage by weight:
TABLE 10A waterborne Wood sealing primer Components and amounts
2. Preparation method of water-based woodware sealing primer
(1) Adding waterborne self-crosslinking acrylic emulsion ROSHIELD 3311 into a container 1 with a stirring device, starting low-speed stirring at 500rpm, sequentially adding a pH regulator AMP-95, a defoaming agent BYK-093 and 5 parts of water, keeping stirring at low speed for 8min, adjusting the rotating speed to 1500rpm, adding titanium dioxide
R-902+ and keeping stirring at high speed for 15 min;
(2) taking another set of container 2 with a stirring device, sequentially adding dipropylene glycol butyl ether, an emulsifier EnviroGem AD01 and 10 parts of water, adjusting the rotation speed to high speed of 1200rpm, keeping stirring at the high speed for 30min, stopping stirring to obtain a film-forming aid pre-dispersion liquid, slowly adding the film-forming aid pre-dispersion liquid into the container 1, and controlling the duration of the addition from the beginning to be 15 min;
(3) adjusting the stirring speed in the container 1 to be 900rpm at a medium speed, and sequentially adding the cationic monomer modified water-based acrylic emulsion
4312. Internal crosslinking agent
HYDROSIL 2926, an anti-bleeding assistant L-44, a polishing assistant Hydropalat SL 3697, a base material wetting agent Tego-245, a bactericide Defross CP62 and Skane M8, stirring at a medium speed for 8min, and filtering through No. 240 filter cloth to obtain the waterborne wood sealing primer.
3. Comprehensive performance of water-based woodware sealing primer
The prepared waterborne wood sealing primer is subjected to various performance tests according to GB/T23999(D), and the comprehensive performance of the results is shown in Table 10 b:
TABLE 10b waterborne Wood seal primer combination Properties
| Detecting items | Water-based woodenware seal primer | Comparison with standard requirements | Test method |
| In the container state | No abnormality | No hard block after even stirring | GB/T 23999-2009 |
| Appearance of coating film | The appearance of the coating film is normal | - | GB/T 23999-2009 |
| Without volatile matter/%) | 32.8 | ≥30 | GB/T 1725-2007 |
| Surface drying time/min | 25 | ≤30 | GB/T1728-1979 surface drying method |
| Actual drying time/h | 4 | ≤6 | GB/T1728-1979 solid dry method |
| Storage stabilitySex (50 ℃, 7d) | No abnormal and no apparent after thickening | No abnormality | GB/T 23999-2009 |
| Sanding property | Easy-to-polish and non-stick sand paper | Easy to polish | GB/T 23999-2009 |
| Adhesion/grade | 0 | ≤1 | GB/T 9286-1998 |
As can be seen from the table above, the comprehensive performance of the waterborne wood sealing primer prepared by the embodiment is superior to that of the national standard GB/T23999(D) -2009, and the storage stability and the sanding property of the waterborne wood sealing primer both reach the performance standard of the conventional waterborne clear primer.
The waterborne wood sealing primer prepared in the embodiment is subjected to a test of the anti-seepage performance of various dark color substrates, and the test process comprises the following steps: the method comprises the following steps of sanding a substrate (removing burrs by No. 240 sand paper, completely removing dust) → spraying of the water-based woodware sealing primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h) → polishing of the primer (grinding and removing burrs by No. 320 sand paper), completely removing dust) → spraying of the conventional water-based anionic acrylic system white primer (uniformly spraying) → drying (drying at 30-40 ℃ for 2h, then turning to normal temperature and drying for 16h) → to-be-measured.
Testing the test plate by using a spectrocolorimeter, recording initial color values, placing the test plate in an environment of 25 ℃ for 1d, 7d and 30d, and in an environment of 50 ℃ for 1d, 3d and 7d, recording respective color difference change values, and summarizing the color difference change values as shown in the following table 0 c:
TABLE 10c bleed-resistant data Δ E values for waterborne wood sealer primers
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The water-based woodware sealing primer is characterized by comprising the following components in percentage by weight:
30-50% of cationic monomer modified water-based acrylic emulsion
20-40% of water-based self-crosslinking acrylic emulsion
5 to 10 percent of titanium dioxide
0.2 to 2 percent of internal crosslinking agent
0.5 to 3.5 percent of anti-bleeding auxiliary agent
1 to 3 percent of grinding auxiliary agent
2 to 6 percent of film-forming additive
10 to 25 percent of water
0.5 to 3 percent of auxiliary agent
The cationic monomer modified water-based acrylic emulsion is a water-based acrylic emulsion which is modified by a cationic monomer and shows anionic characteristics as a whole;
the water-based self-crosslinking acrylic emulsion is an anionic water-based self-crosslinking acrylic emulsion with the lowest film-forming temperature of 30-50 ℃;
the titanium dioxide is rutile titanium dioxide with the surface modified by aluminum or zirconium;
the internal crosslinking agent is polysiloxane oligomer with epoxy functional groups;
the anti-bleeding auxiliary agent is an aqueous solution of a coordination compound containing aluminum, magnesium, zirconium or zinc;
the auxiliary agent is more than four of pH regulator, defoamer, thickener, emulsifier, base material wetting agent and bactericide.
2. The waterborne wood sealing primer according to claim 1, wherein: the cationic monomer modified water-based acrylic emulsion is one or more of Joncryl 8227 made by Basff company, Lacper 4312 made by Vanhua chemical company, ECS-4907 made by Zhongshan Yicike company and HG-4810 made by Jia Bao Li company.
3. The waterborne wood sealing primer according to claim 1, wherein: the waterborne self-crosslinking acrylic emulsion is one or more of Lacper 4501, Lacper 4401 of Vawa chemical company, ROSHIELD 3311 of Dow company, Joncryl 8330 of Pasteur company and Setaqua 6718 of New Peltier company.
4. The waterborne wood sealing primer according to claim 1, wherein: the titanium dioxide is one or more of CR-826 of Teno, Ti-Pure R-900 of Kemu, Ti-Pure R-902+, Ningbo New Fu NTR-606 and BILLIONS BLR-895 of Dragon Boy company.
5. The waterborne wood sealing primer according to claim 1, wherein: the internal crosslinking agent is one or more of Dynasylan HYDROSIL 2926 of winning and creating industry group, Coatosil2287 and MP200 of American Meiji photo company; the anti-bleeding auxiliary agent is one or more of L-44, L-66 and L-77 of Halox company in the United states.
6. The waterborne wood sealing primer according to claim 1, wherein: the grinding aid is grinding powder or grinding slurry containing zinc stearate or calcium stearate compounds; the film-forming assistant is an alcohol ether organic solvent.
7. The waterborne wood sealing primer according to claim 6, wherein: the grinding auxiliary agent is one or more of MJ-555 in Simian san chemical industry, Hydropalat SL 3697 in Pasteur and SAK-ZS-PLB in Singapore Sanyi chemical industry; the film-forming assistant is one or more of propylene glycol methyl ether, propylene glycol butyl ether, dipropylene glycol methyl ether and dipropylene glycol butyl ether.
8. The waterborne wood sealing primer according to claim 1, wherein: the dosage of the auxiliary agent is as follows according to the percentage of the total mass of the raw materials:
0.1 to 0.5 percent of pH regulator
0.05 to 0.5 percent of defoaming agent
0 to 2 percent of thickening agent
0 to 0.5 percent of emulsifier
0.1 to 0.5 percent of base material wetting agent
0.05 to 0.2 percent of bactericide
The pH regulator is an organic amine compound;
the defoaming agent is an organic silicon defoaming agent;
the thickening agent is an associated polyurethane thickening agent;
the emulsifier is a nonionic surfactant;
the base material wetting agent is polyether modified polysiloxane wetting agent;
the bactericide is an isothiazolinone-containing biocide.
9. The preparation method of the waterborne wood sealing primer according to any one of claims 1 to 8, which is characterized by comprising the following steps:
1) adding the water-based self-crosslinking acrylic emulsion into a container 1, starting low-speed stirring, adding a pH regulator, a defoaming agent and 0-15% of water, keeping stirring at low speed for 5-8min, then adjusting the rotating speed to high-speed stirring, adding titanium dioxide, and keeping stirring at high speed;
2) adding the film-forming aid and the rest water into a container 2, adjusting the rotating speed to a high speed, keeping stirring at the high speed for 20-30min, stopping stirring to obtain a film-forming aid pre-dispersion liquid, and adding the film-forming aid pre-dispersion liquid into the container 1;
3) adjusting the stirring speed in the container 1 to be medium-speed stirring, sequentially adding the cationic monomer modified water-based acrylic emulsion, the internal crosslinking agent, the anti-bleeding assistant, the polishing assistant, the base material wetting agent and the bactericide, keeping the medium-speed stirring, and filtering to obtain the water-based wood sealing primer;
the rotating speeds of the low-speed stirring, the medium-speed stirring and the high-speed stirring are respectively 500r/min, 1000r/min and 1500r/min, respectively.
10. The preparation method of the waterborne wood sealing primer according to claim 9, which is characterized in that: the step 1) of adding the pH regulator, the defoaming agent and 0-15% of water also comprises adding 0-0.4% of thickening agent; the rest of the thickening agent is added during the feeding in the step 3); adding the film-forming aid and the remaining water into the container 2) in the step 2) further comprises adding an emulsifier; keeping the high-speed stirring in the step 1) for 10-15 min; the time for adding the pre-dispersion liquid of the film-forming additive into the container 1 in the step 2) is 10-15 min; keeping the stirring at the medium speed in the step 3) for 8-10 min; the filtration is carried out by 240# filter cloth.
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| CN111154362A (en) * | 2020-01-16 | 2020-05-15 | 上海立邦长润发涂料有限公司 | Water-based single-component tannin-resistant seal primer and preparation method thereof |
| CN111234632A (en) * | 2020-03-18 | 2020-06-05 | 深圳市长丰环保新材料有限公司 | Water-based primer coating and using method thereof |
| CN111393938B (en) * | 2020-05-06 | 2021-12-10 | 青岛展辰新材料有限公司 | Water-based woodware sealing varnish and preparation method thereof |
| CN111925698A (en) * | 2020-07-16 | 2020-11-13 | 珠海展辰新材料股份有限公司 | Water-based woodenware coating and preparation method thereof |
| CN112646199B (en) * | 2020-12-03 | 2022-08-12 | 嘉宝莉化工集团股份有限公司 | Capsule type hydrophobic acrylate emulsion, capsule structure, preparation method and application thereof |
| CN117264481B (en) * | 2023-09-26 | 2024-04-09 | 广东百川化工有限公司 | Universal yellowing-resistant single-component finish paint applicable to various priming paint and preparation method thereof |
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| PL320422A1 (en) * | 1994-11-29 | 1997-09-29 | Vianova Kunstharz Ag | Two-stage process of obtaining self-crosslinking copolymeric dispersions and their application in lacquers |
| CN105602377B (en) * | 2016-03-29 | 2018-07-24 | 深圳市雷巴环保材料有限公司 | A kind of anti-bleeding seal coat of aqueous wooden ware and preparation method thereof, application |
| CN109749001B (en) * | 2017-11-08 | 2021-02-02 | 万华化学（宁波）有限公司 | Anionic acrylic emulsion containing cationic monomer and preparation method thereof |
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