CN105086805A - High-hardness water-borne double-component wood-ware varnish with high wear resistance and preparing method thereof - Google Patents
High-hardness water-borne double-component wood-ware varnish with high wear resistance and preparing method thereof Download PDFInfo
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Abstract
The invention provides high-hardness water-borne double-component wood-ware varnish with high wear resistance. The varnish is composed of main agent A and a curing agent B. The main agent A is composed of, by weight, 50-70% of water-borne hydroxyl acrylic emulsion, 10-30% of water-borne polyurethane resin, 4.0-8.0% of water-borne wear-resisting functionality filler, 6.5-11.7% of adjuvant and the balance water; the curing agent B is composed of, by weight, 80% of water dispersing modified polyisocyanate and 20% of propylene glycol monomethyl ether acetate. According to a coating method for the high-hardness water-borne double-component wood-ware varnish with the high wear resistance, the main agent A, the curing agent and the water are mixed according to the weight ratio of 100:20:20-30. The varnish has the advantages of being high in hardness and wear resistance, drying fast, resisting scratching, being good in water resistance and excellent in alcohol resistance, and resisting adhesion, and can be widely applied.
Description
Technical field
The present invention relates to a kind of woodenware lacquer.
Background technology
Along with the enhancing day by day of people's environmental consciousness, the use range of solvent based coating is progressively restricted, and water-borne wood coating have the discharge of free from environmental pollution, low VOC (VOC), toxicity little, do not fire the not quick-fried concern and the attention that are more and more subject to people without advantages such as disaster hidden-troubles, aqueous woodware paint is also more and more applied in industrial woodwork coating market.But due to the wearing no resistance of single-component water-based woodwork coating, hardness is low, resistance to blocking is poor, scratch resistance is poor etc., and problem governs water-borne wood coating application development commercially, especially to the application had in wear-resisting, hardness, anti scuffing on the office furniture of high request.
In general, the method for raising water-borne wood coating wear resistance, hardness, resistance to blocking, scratch resistance comprises the second-order transition temperature, interpolation high molecular weight silicone polymkeric substance, interpolation filler etc. that improve resin.But the second-order transition temperature improving resin needs to add film coalescence aid in a large number, and the content of VOC can be made like this to increase; The high molecular weight silicone polymkeric substance added and resin system poor compatibility; Add the transparency that filler can have influence on again paint film, improve the effect of wear-resisting scratch-resisting is not how many.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of high hard high abrasion aqueous double-component woodenware lacquer and preparation method thereof.Described height hard high abrasion aqueous double-component woodenware lacquer is made up of host A and solidifying agent B, and described host A is made up of the component of following weight percent: water-based hydroxyl ACRYLIC EMULSION 50 ~ 70%, waterborne polyurethane resin 10 ~ 30%, aqueous wear-resistant functional filler 4.0 ~ 8.0%, auxiliary agent are 6.5 ~ 11.7%, water surplus; Described solidifying agent B is made up of the component of following weight percent: water dispersibles modified polyisocyanate 80%, 1-Methoxy-2-propyl acetate 20%.
Particularly, the hydroxyl value of the water-based hydroxyl ACRYLIC EMULSION of described host A is 130, second-order transition temperature 42 DEG C, and solid content is 46.6%; Described aqueous wear-resistant functional filler is polymethylmethacrylate superpolymer; Described waterborne polyurethane resin is aqueous polyurethane dispersion, and its solid content is 35-38%, and minimum film-forming temperature is 32 DEG C, and pencil hardness is HB ~ 1H.
Particularly, the auxiliary agent of described host A is made up of the component of following weight percent:
Further, described water-soluble multifunctional auxiliary agent is 2-amino-2-methyl-1-propanol, described water-based anti-settling agent be containing modified urea weight percentage be 52% N-Methyl pyrrolidone solution, described aqueous wetting agent is polyether siloxane copolymer, described film coalescence aid 1-Methoxy-2-propyl acetate, described water-based deaerating agent to be the weight percent of solid content be 8 ~ 10% modified dimethyl polysiloxane solution, described water-based flow agent is polyether siloxane copolymer, described frostproofer is propylene glycol, described anticorrosion and bactericidal agent is one or both the mixture in CMIT and MIT, described water-based thickener rheology agent is urethane association type thickening auxiliary rheological agents.
Prepare a method for height of the present invention hard high abrasion aqueous double-component woodenware lacquer, wherein the preparation method of host A of the present invention comprises the following steps:
(1). by formula ratio, drop into water-based hydroxyl ACRYLIC EMULSION in Scattered Kettle, under 600r/min whipped state, add aqueous dispersant, water-based anti-settling agent, aqueous wetting agent, water-based defoamer, film coalescence aid successively, add rear 1000r/min and disperse 10 ~ 15min;
(2). under whipped state, add aqueous wear-resistant functional filler, add rear 1200r/min and disperse 30min to fineness≤25um;
(3). under 800r/min whipped state, add waterborne polyurethane resin successively, water-based deaerating agent, water-based flow agent, frostproofer, anticorrosion and bactericidal agent, water-based thickener rheology agent fully stir 10 ~ 15 minutes to stable viscosity;
(4). filter discharging, packaging.
Prepare a method for height of the present invention hard high abrasion aqueous double-component woodenware lacquer, wherein the preparation method of solidifying agent B of the present invention to mix with 1-Methoxy-2-propyl acetate for by formula ratio water being dispersibled modified polyisocyanate and get final product.
A coating method for height of the present invention hard high abrasion aqueous double-component woodenware lacquer, is characterized in that: the ratio being 100: 20: 20 ~ 30 by weight by described host A, solidifying agent B and water mixes.
The present invention with the addition of aqueous wear-resistant functional filler polymethylmethacrylate superpolymer, and it is white powder, and microcosmic is perfect spherical shape; Have consistency good, be easy to dispersion, not easily precipitate, the feature such as transparency is high, feel is fine and smooth, greatly can improve the wear resistance, resistance to marring, hardness etc. of film coated surface.And add this product in coating after, small male and fomale(M&F) can be formed in film coated surface, there is scattering of light effect, play extinction effect.Water-based hydroxyl ACRYLIC EMULSION hardness is high; Aqueous polyurethane dispersion has water-fast good, the feature such as hardness is high, wear-resistant, anti scuffing.
Water-soluble multifunctional auxiliary agent plays the effect such as adjustment pH value, collaborative enhancing dispersion agent, defoamer, flow agent.Water-based anti-settling agent is for improving anti-settling and the sag prevention of system.Aqueous wetting agent has high-effect reduction coating surface tension force, improves substrate wettability, shrinkproof permeability, good recoatability and promotion mobilization.Water-based defoamer is the defoamer that the froth breaking material of special molecular structure and polysiloxane synthesize, and consistency is good, roller coat and the broken bubble of map brushing fast, do not affect gloss.Film coalescence aid contributes to film forming matter film forming and do not consume waterborne curing agent-NCO group at low temperatures.Water-based deaerating agent can be used for based on pure water-borne coatings and polymer emulsion, the coating containing cosolvent.Water-based flow agent has the mobility improving coating, improves scratch resistance, and excellent anti-shrinkage cavity effect and resistance to blocking, provide smooth feel.Propylene glycol frostproofer can be antifreeze at-5 DEG C ~ 0 DEG C, and in adjustable drying process, the volatilization of film coalescence aid balances, and contributes to preventing prickly heat, orange peel etc. from painting sick generation, can adopt commercially available technical grade product.Anticorrosion and bactericidal agent is used for anti-bacteria and fungi growing in production and storage process in moisture organic products, not containing formaldehyde or formaldehyde emission.
The present invention mainly utilizes in formula that high hydroxyl value ACRYLIC EMULSION hardness is high, fullness ratio good, the feature that waterborne polyurethane resin consistency is good, snappiness is good, resistance to blocking is good, makes two kinds of different resins be combined with each other modification and a kind of coating adding multiple auxiliary agent and make by composite.Utilize polymethylmethacrylate superpolymer high rigidity, high abrasion, particle diameter to arrange uniform advantage, effectively solve that traditional single-component water-based wood lacquer hardness is low, patience is poor, resistance to blocking is poor, not anti scuffing, not wear-resisting shortcoming.Due to features such as it is water-fast, chemicals-resistant, hardness are high, antiblocking, anti scuffing, high abrasions, the aqueous woodware paint on contrast existing market has more excellent film effect and range of application.
In order to understand better and implement, describe the present invention in detail below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the host A of height of the present invention hard high abrasion aqueous double-component woodenware lacquer.
Embodiment
In adjuvant component of the present invention, described water-soluble multifunctional auxiliary agent is AMP-95 multifunctional assistant, described aqueous dispersant is Tego-752W or Tego-750w of the high chemistry of enlightening, described water-based anti-settling agent is BYK-420 or BYK-E420 of Bi Ke chemistry, described aqueous wetting agent is the BYK-349 of Tego-270 or the Bi Ke chemistry of the high chemistry of enlightening, described water-based defoamer is Kening Co., Ltd
a36, described water-based deaerating agent are that Kening Co., Ltd produces
1293, described water-based flow agent be the BYK-333 of Tego-450 or the Bi Ke chemistry of the high chemistry of enlightening, the described anticorrosion and bactericidal agent LXE that is Rhom and Hass, the described water-based thickener rheology agent mixture that is the mixture of PUR40 and PUR60 of Ming Ling company or R-8W and R-2020 of DOW Chemical.
Described water dispersibles modified polyisocyanate to be the trade mark of Wan Hua company be 268 product or the trade mark produced of Beyer Co., Ltd be the product of 2655.
preparation embodiment
The preparation method of height of the present invention hard high abrasion aqueous double-component woodenware lacquer comprises the steps, wherein the technical process of host A is as shown in Figure 1:
(1). by formula ratio in table 1, drop into water-based hydroxyl ACRYLIC EMULSION in Scattered Kettle, under 600r/min whipped state, add water-soluble multifunctional auxiliary agent, aqueous dispersant, water-based anti-settling agent, aqueous wetting agent, water-based defoamer, film coalescence aid successively, add rear 1000r/min and disperse 10 ~ 15min;
(2). under whipped state, add aqueous wear-resistant functional filler, add rear 1200r/min and disperse 30min to fineness≤25um;
(3). under 800r/min whipped state, add waterborne polyurethane resin, water-based deaerating agent, water-based flow agent, frostproofer, anticorrosion and bactericidal agent, water-based thickener rheology agent and excess water successively under 800r/min whipped state, stir 10-15 minute to stable viscosity, obtain milky white liquid;
(4). filter discharging, packaging, obtain milky white liquid host A;
(5). water is dispersibled modified polyisocyanate and 1-Methoxy-2-propyl acetate and mix by weight 8: 2, obtaining transparent liquid, is solidifying agent B.
< shows 1>
effect example
Paint film property test is carried out according to the testing method of national standard method GB/T23999-2009.
1. the ratio that the host A obtained by embodiment 1 ~ 3, solidifying agent B and water are 100: 20: 20 ~ 30 is by weight mixed and carry out spray board test.Embodiment 1 ~ 3 paint film property test result is in table 2:
< shows 2>
2. varnish of the present invention and commercially available product separately regulation ratio carry out allotment dilution and carry out spray board test, maintenance is the contrast of paint film property test result after 7 days, in table 3
< shows 3>
The surface drying of varnish of the present invention, do solid work all very fast, hardness is high, and wear resistance is high, sticking power is good, and resistance to marring is excellent, and other are as also fine in the endurance such as water tolerance, alcohol resistance aspect, overall performance is better than domestic famous brand name product, exceedes the standard-required of category-A product in national standard method.And production technique is simple, economical rationality, does not need to increase and change original production unit, the large production of suitability for industrialized.Product of the present invention has that hardness is high, wear resistance is high, quick-drying, anti scuffing, water-tolerant, alcohol resistance are excellent and the feature such as antiblocking, can widespread use.
The present invention is not limited to above-mentioned embodiment, if do not depart from the spirit and scope of the present invention to various change of the present invention or distortion, if these are changed and distortion belongs within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these changes and distortion.
Claims (7)
1. one kind high hard high abrasion aqueous double-component woodenware lacquer, it is characterized in that: be made up of host A and solidifying agent B, described host A is made up of the component of following weight percent: water-based hydroxyl ACRYLIC EMULSION 50 ~ 70%, waterborne polyurethane resin 10 ~ 30%, aqueous wear-resistant functional filler 4.0 ~ 8.0%, auxiliary agent are 6.5 ~ 11.7%, water surplus; Described solidifying agent B is made up of the component of following weight percent: water dispersibles modified polyisocyanate 80%, 1-Methoxy-2-propyl acetate 20%.
2. height according to claim 1 hard high abrasion aqueous double-component woodenware lacquer, is characterized in that: the hydroxyl value of the water-based hydroxyl ACRYLIC EMULSION of described host A is 130, second-order transition temperature 42 DEG C, and solid content is 46.6%; Described aqueous wear-resistant functional filler is polymethylmethacrylate superpolymer; Described waterborne polyurethane resin is aqueous polyurethane dispersion, and its solid content is 35-38%, and minimum film-forming temperature is 32 DEG C, and pencil hardness is HB ~ 1H.
3. height according to claim 1 hard high abrasion aqueous double-component woodenware lacquer, is characterized in that: the auxiliary agent of described host A is made up of the component of following weight percent:
4. height according to claim 3 hard high abrasion aqueous double-component woodenware lacquer, it is characterized in that: described water-soluble multifunctional auxiliary agent is 2-amino-2-methyl-1-propanol, described water-based anti-settling agent be containing modified urea weight percentage be 52% N-Methyl pyrrolidone solution, described aqueous wetting agent is polyether siloxane copolymer, described film coalescence aid is 1-Methoxy-2-propyl acetate, described water-based deaerating agent to be the weight percent of solid content be 8 ~ 10% modified dimethyl polysiloxane solution, described water-based flow agent is polyether siloxane copolymer, described frostproofer is propylene glycol, described anticorrosion and bactericidal agent is one or both the mixture in CMIT and MIT, described water-based thickener rheology agent is urethane association type thickening auxiliary rheological agents.
5. prepare a method for height according to claim 1 hard high abrasion aqueous double-component woodenware lacquer, it is characterized in that: the preparation method of described host A comprises the following steps:
(1). by formula ratio, drop into water-based hydroxyl ACRYLIC EMULSION in Scattered Kettle, under 600r/min whipped state, add aqueous dispersant, water-based anti-settling agent, aqueous wetting agent, water-based defoamer, film coalescence aid successively, add rear 1000r/min and disperse 10 ~ 15min;
(2). under whipped state, add aqueous wear-resistant functional filler, add rear 1200r/min and disperse 30min to fineness≤25um;
(3). under 800r/min whipped state, add waterborne polyurethane resin successively, water-based deaerating agent, water-based flow agent, frostproofer, anticorrosion and bactericidal agent, water-based thickener rheology agent fully stir 10 ~ 15 minutes to stable viscosity;
(4). filter discharging, packaging.
6. prepare a method for height according to claim 1 hard high abrasion aqueous double-component woodenware lacquer, it is characterized in that: the preparation method of described solidifying agent B to mix with 1-Methoxy-2-propyl acetate for by formula ratio water being dispersibled modified polyisocyanate and get final product.
7. a coating method for height according to claim 1 hard high abrasion aqueous double-component woodenware lacquer, is characterized in that: the ratio being 100: 20: 20 ~ 30 by weight by described host A, solidifying agent B and water mixes.
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| CN115537082A (en) * | 2022-09-29 | 2022-12-30 | 上海金力泰化工股份有限公司 | High-filling-property high-solid-content transparent coating for composite material and preparation method thereof |
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