CN103013325A - Preparation method of scratch-resistant polyurethane matt black finish for woodware - Google Patents
Preparation method of scratch-resistant polyurethane matt black finish for woodware Download PDFInfo
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- CN103013325A CN103013325A CN2012105794605A CN201210579460A CN103013325A CN 103013325 A CN103013325 A CN 103013325A CN 2012105794605 A CN2012105794605 A CN 2012105794605A CN 201210579460 A CN201210579460 A CN 201210579460A CN 103013325 A CN103013325 A CN 103013325A
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Abstract
The invention relates to a preparation method of a scratch-resistant polyurethane matt black finish for woodware. The scratch-resistant polyurethane matt black finish comprises a resin paint component A and a curing agent component B in the weight ratio of 1: 0.5, wherein the resin paint component A comprises alkyd resin, extinction powder, a dispersing agent, carbon black paste, a modifying flatting agent, an antifoaming agent, an anti-settling agent and a solvent; and the curing agent component B comprises a TDI-HDI (Toluene Diisocynate-Hexamethylene Diisocyanate) mixed tripolymer or a TDI/TMP (Trimethylolpropane) affixture, an HDI tripolymer and a solvent. The scratch-resistant double-component polyurethane matt black finish for woodware, prepared by the preparation method provided by the invention, brings no precipitate during being stored, is high in solidity, low in viscosity and excellent in leveling property; and the filming can be realized at one time, and the film is thick, free from sagging, and soft, full, fine, smooth, slippery in hand feel, shows alternate kindness with severity, is given the effect of full decoration like a mirror plane, brings a graceful and comfortable feel, and is adapted to modern aesthetic view and widely popular with the market and customers. The scratch-resistant polyurethane matt black finish is widely applied to protective decoration of surfaces of products such as the woodware, metals and plastics.
Description
Technical field
The present invention relates to a kind of preparation method of two component polyurethane woodenware matte black flour lacquer, relate in particular to a kind of scratch resistance urethane woodenware matte black flour lacquer that is applicable to all kinds of woodenware.
Background technology
Along with the raising of people's material and cultural life, the human consumer is also more and more higher to the painting effect requirement of furniture, thereby has driven the rapid growth of domestic woodwork coating.The painting effect of furniture surface will directly affect the human consumer to the selection of furniture, and the dumb light wood lacquer occupies the very big market share on the furniture Coating Market.Current huge wood lacquer market is more and more higher to the requirement of painting, it is woodenware urethane (PU) lacquer excellent combination property for dragon, the human consumer uses extensively, but there are many weak points in product, as turn white, foaming, delamination, scratch resistance, ghost, impression of the hand are difficult for disappearing etc.These problems puzzlement producer and engineering technical personnel, some problem even fail for a long time to solve.Therefore developing a kind of resistance to marring PU black dumb light wood lacquer comes the demand of satisfying the market necessary.
Summary of the invention
The present invention selects the high scratch resistance Synolac of hydroxyl value, it is strong that this resin has a symmetrical molecule structure rigidity, has again certain snappiness, resin viscosity is low, the transparency is good, has scratch resistance, hardness is high, quick-drying, the characteristics such as snappiness is good, resin also contains more primary hydroxyl in addition, sterically hindered little, reactive behavior is high, and the second-order transition temperature of this resin is high simultaneously, is conducive to solvent and discharges, thereby accelerate to film the convection current of internal solvent and the increase of top layer viscosity, cause flatting silica to be detained more, consumption is few, and eliminate optical property is good, good leveling property, thereby improve the transparency of filming, simultaneously fullness ratio, resistance to marring is also good.
Flatting silica of the present invention is selected silicon-dioxide and the organic wax powder of processing through wax, and the photoextinction of silicon-dioxide is mainly by decisions such as voidage, size, surface treatment methods.Under equal conditions the particle diameter of silicon-dioxide is larger, the larger photoextinction of voidage is better; The present invention chooses the flatting silica of usefulness, and its particle diameter is little, and size distribution is even, and voidage is large, and refraction coefficient and resin are close, and flatting efficiency is high, and the transparency of filming is good, is easy to disperse, and suspension is good, and the viscosity increase is very little, and feel is fine and smooth, does not affect recoatability.
Flatting silica dispersion agent of the present invention is selected the copolymer dispersant of modification block structure.
Defoamer of the present invention is selected modified siloxane type defoamer, can effectively eliminate bubble and can not produce again surface atomizing and shrinkage cavity phenomenon.
The present invention selects chelating modification flow agent or organosilicon-modified acrylic multipolymer flow agent, and unstable bubble can provide the excellent levelling property again can froth breaking.Owing to the special role of titanic acid ester group, greatly improve the long wave levelling of paint film, eliminate paint film and do " greatly wave " phenomenon of rear the appearance, so that paint film produces mirror effect.Because titanic acid ester has close organic phase, close inorganic phase specific groups, wetting pigment and ground have significant wettability, defoaming quickly and effectively, finally make paint film have excellent planeness and the dried rear defectives such as sagging that easily produce of elimination.And organosilicon-modified acrylic multipolymer flow agent can reduce the surface tension of wet film strongly, and good recoatability and ply adhesion without ghost, improve slipping and scratch resistant.
In order to solve technical problem recited above, the present invention takes following technical scheme: the present invention relates to a kind of scratch resistance urethane woodenware matte black flour lacquer, be comprised of resin paint first component and solidifying agent second component, the weight proportion of the first and second components is 1:0.5; Described resin paint first component comprises Synolac 40%～60%, flatting silica 3%～6%, dispersion agent 0.3%～1%, carbon black color slurry 25%～40%, modification flow agent 0.1%～0.5%, defoamer 0.1%～0.5%, anti-settling agent 0.5%～3% and solvent 5%～15%; Described solidifying agent second component comprises TDI-HDI mixed trimer or TDI/TMP affixture 30～40%, HDI tripolymer 25～35% and solvent 25～35%.
Wherein, Synolac is selected hydroxyl value 〉=120mgKOH/g, acid number＜12mgKOH/g scratch resistance dumb light Synolac.
Carbon black color slurry is selected the solvent-borne type carbon black color slurry of fineness≤10 μ.
Flatting silica is selected a kind of of the silicon-dioxide processed through wax and organic wax powder.
Dispersion agent is selected the copolymer dispersant of modification block structure.
The modification flow agent is selected the organosilicon chelating flow agent of titanic acid ester modification, the polyacrylic ester chelating flow agent of titanic acid ester modification, a kind of or its combination of organosilicon-modified acrylic multipolymer flow agent.
Defoamer is selected the modified siloxane defoamer.
Anti-settling agent is selected a kind of of modified urea polymkeric substance, polyamide wax.
Solvent is chosen with water-free dimethylbenzene, N-BUTYL ACETATE, vinyl acetic monomer, methylethylketone, PMA, DBE, isophorone, terebinthine a kind of or its combination.
Carbon black color slurry of the present invention comprises 10～25% carbon blacks, 35～60% synthetic fat acid resins, 6～15% carbon black color slurry dispersion agents, 0.2～0.5% defoamer, 0.5～2% anti-settling agent and 10～30% solvents.
Carbon black is selected Mongul-L, REGAL400R, Monarch1300 or the Monarch900 of Cabot, the Specialbiack4 of Degussa, Special biack6, Special biack550, FW18, FW285 or FW200, the MA7 of Mitsubishi Chemical, MA100 or #40, the Raven3500 of Colombia's chemistry, Raven1255 or Raven3600, and other high-carbon black pigment is a kind of.
The carbon black color slurry dispersion agent is selected the block macromolecular multipolymer that contains the pigment affinity groups, especially selects the macromolecule dispersing agent of controlled free-radical synthetic (CPT), as
A kind of or its combination of DISPERBYK-2000, DISPERBYK-2001, DISPERBYK-2020, DISPERBYK-2025, DISPERBYK-2026.
The present invention proposes the preparation method that a kind of scratch resistance urethane woodenware matte black flour lacquer is used carbon black color slurry, its preparation technology is as follows: add mixed solvent by the formulation weight ratio in disperseing bucket, Synolac, carbon black dispersant stirs, slowly add carbon black powder, then under the high speed of 1000～1200r/min, disperse 45～60min, arrive again the horizontal sand mill circular grinding 4～6 times, until the fineness particle diameter of mill base reaches requirement≤10 μ, move on to paint mixing bucket froth breaking accent sticking, filter and package and make the solvent-borne type carbon black color slurry.
The present invention proposes a kind of preparation method of scratch resistance urethane woodenware matte black flour lacquer, its preparation technology is as follows: by the formulation weight ratio, partial solvent is added in the Scattered Kettle, adding Synolac stirs, add flatting silica, dispersion agent, high speed dispersion 30～40min adds carbon black color slurry, flow agent, defoamer, anti-settling agent, solvent under stirring at low speed, the good viscosity of stirring and adjusting filters and packages and namely makes a kind of scratch resistance urethane woodenware matte black flour lacquer.
The scratch resistance urethane woodenware matte black flour lacquer that the present invention makes does not precipitate when storing, high-solid lower-viscosity, good leveling property, one-pass film-forming is thick and do not produce sagging, have soft, the plentiful exquisiteness of feel, solemnly, hard and soft squeeze mutually, such as plentiful decorative effect as the minute surface, give the comfortable sensation of a kind of gracefulness of people, adapt to modern Aesthetic View, be subjected to very much the favor in market and liking of client.The surface that is widely used in the goods such as woodenware, metal, plastics is done protection and is decorated.
Embodiment
Embodiment 1:
Than in disperseing bucket, adding 25 parts of mixed solvents, add 50 parts of 60% Synolac that admittedly contains by formulation weight, add
9 parts of carbon black dispersants stir, slowly add 15 parts of spy's 4 carbon blacks, then under the high speed of 1000～1200r/min, disperse 45～60min, arrive again the horizontal sand mill circular grinding 4～6 times, until the fineness particle diameter of mill base reaches requirement≤10 μ, move on to paint mixing bucket froth breaking accent sticking, filter and package and make the solvent-borne type carbon black color slurry.
Embodiment 2:
In disperseing bucket, add 13 parts of mixed solvents by the formulation weight ratio, add 50 parts of 60% Synolac that admittedly contains, stir, add again 4 parts of flatting silicas, 0.5 part of dispersion agent, high speed dispersion 30～40min, under stirring at low speed, add 30 parts of carbon black color slurries, 0.3 part of the organosilicon chelating flow agent of titanic acid ester modification, 0.2 part of modified siloxane defoamer, 2 parts of polyamide waxes, stir to filter and package after qualified after testing and namely make scratch resistance urethane woodenware matte black flour lacquer first component.
Embodiment 3:
In disperseing bucket, add 30 parts of 40 parts of TDI/TMP affixtures, 30 parts of HDI tripolymers, mixed solvent and stir, filter and package after qualified after testing and namely make scratch resistance urethane woodenware matte black flour lacquer second component.
According to the first component: second component=1:0.5 proportioning paint adds thinner and is transferred to the viscosity that can brush.
According to relevant national standard, the performance that the scratch resistance urethane woodenware matte black flour that the present invention is made coats with lacquer detects, and test result is as shown in table 1.
Table 1 scratch resistance urethane woodenware matte black flour lacquer the performance test results
| Test event | Test result |
| Paint film appearance | Black, smooth even |
| Surface drying/min | 24 |
| Do solid work/h | 20 |
| Pencil hardness | 2H |
| Sticking power/level | 1 |
| Snappiness/mm | 2 |
| Gloss % | 52～56 |
| Fullness ratio | Good |
| Feel | Good |
| Levelling property | Excellent |
| Scratch resistant | Good |
| Recoatability | Good |
| Sag resistance | Get well, not sagging |
Although the present invention has done to describe in detail and quoted embodiment as proof, for those of ordinary skill in the art, various schemes, modification and the change that obviously can make according to above-mentioned explanation all should be included within the scope of claim.
Claims (14)
1. a scratch resistance urethane woodenware matte black flour coats with lacquer, and it is characterized in that: be comprised of resin paint first component and solidifying agent second component, the weight proportion of the first and second components is 1:0.5; Described resin paint first component comprises Synolac 40%～60%, flatting silica 3%～6%, dispersion agent 0.3%～1%, carbon black color slurry 25%～40%, modification flow agent 0.1%～0.5%, defoamer 0.1%～0.5%, anti-settling agent 0.5%～3%, solvent 5%～15%; Described solidifying agent second component comprises TDI-HDI mixed trimer or TDI/TMP affixture 30～40%, HDI tripolymer 25～35%, solvent 25～35%.
2. a kind of scratch resistance urethane woodenware matte black flour as claimed in claim 1 coats with lacquer, and it is characterized in that: described Synolac is selected hydroxyl value 〉=120mgKOH/g, acid number＜12mgKOH/g scratch resistance dumb light acid alcohol acid resin.
3. a kind of scratch resistance urethane woodenware matte black flour as claimed in claim 1 coats with lacquer, and it is characterized in that: described carbon black color slurry is selected the solvent-borne type carbon black color slurry of fineness≤10 μ.
4. a kind of scratch resistance urethane woodenware matte black flour lacquer as claimed in claim 1 is characterized in that: described flatting silica is selected a kind of of the silicon-dioxide processed through wax and organic wax powder.
5. a kind of scratch resistance urethane woodenware matte black flour as claimed in claim 1 coats with lacquer, and it is characterized in that: described dispersion agent is selected the copolymer dispersant of modification block structure.
6. a kind of scratch resistance urethane woodenware matte black flour as claimed in claim 1 coats with lacquer, and it is characterized in that: described modification flow agent is selected the organosilicon chelating flow agent of titanic acid ester modification, the polyacrylic ester chelating flow agent of titanic acid ester modification, a kind of or its combination of organosilicon-modified acrylic multipolymer flow agent.
7. a kind of scratch resistance urethane woodenware matte black flour as claimed in claim 1 coats with lacquer, and it is characterized in that: described defoamer is selected the modified siloxane defoamer.
8. a kind of scratch resistance urethane woodenware matte black flour as claimed in claim 1 coats with lacquer, and it is characterized in that: described anti-settling agent is selected a kind of of modified urea polymkeric substance, polyamide wax.
9. a kind of scratch resistance urethane woodenware matte black flour as claimed in claim 1 coats with lacquer, and it is characterized in that: described solvent is selected dimethylbenzene, N-BUTYL ACETATE, vinyl acetic monomer, methylethylketone, PMA, DBE, isophorone, terebinthine a kind of or its combination.
10. such as claim 1,3 described a kind of scratch resistance urethane woodenware matte black flour lacquers, it is characterized in that: described carbon black color slurry comprises 10～25% carbon blacks, 35～60% synthetic fat acid resins, 6～15% carbon black color slurry dispersion agents, 0.2～0.5% defoamer, 0.5～2% anti-settling agent, 10～30% solvents.
11. a kind of scratch resistance urethane woodenware matte black flour lacquer as claimed in claim 10, it is characterized in that: described carbon black is selected Mongul-L, REGAL400R, Monarch1300 or the Monarch900 of Cabot, the Specialbiack 4 of Degussa, Special biack 6, Special biack 550, FW18, FW285 or FW200, the MA7 of Mitsubishi Chemical, MA100 or #40, the Raven3500 of Colombia's chemistry, Raven1255 or Raven3600, and other high-carbon black pigment is a kind of.
12. a kind of scratch resistance urethane woodenware matte black flour lacquer as claimed in claim 10, it is characterized in that: described carbon black color slurry dispersion agent is selected the block macromolecular multipolymer that contains the pigment affinity groups, especially select the macromolecule dispersing agent of controlled free-radical synthetic (CPT), as
A kind of or its combination of DISPERB Y K-2000, DISPERB Y K-200 1, DISPERB Y K-2020, DISPERB Y K-2025, DISPERBYK-2026.
13. such as claim 1,3,10 described a kind of scratch resistance urethane woodenware matte black flour lacquers, it is characterized in that: the preparation method of described carbon black color slurry, its preparation technology is as follows: add mixed solvent by the formulation weight ratio in disperseing bucket, Synolac, carbon black dispersant stirs, slowly add carbon black powder, then under the high speed of 1000～1200r/min, disperse 45～60min, arrive again the horizontal sand mill circular grinding 4～6 times, until the fineness particle diameter of mill base reaches requirement≤10 μ, move on to paint mixing bucket froth breaking accent sticking, filter and package and make the solvent-borne type carbon black color slurry.
14. the preparation method of an a kind of scratch resistance urethane woodenware matte black flour lacquer as claimed in claim 1, it is characterized in that: described preparation method, its preparation technology is as follows: by the formulation weight ratio, partial solvent is added in the Scattered Kettle, stirring the lower Synolac that adds dissolves evenly, add flatting silica, dispersion agent, high speed dispersion 30～40min, under stirring at low speed, add carbon black color slurry, flow agent, defoamer, anti-settling agent, solvent, the good viscosity of stirring and adjusting filters and packages and namely makes a kind of scratch resistance urethane woodenware matte black flour lacquer.
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Denomination of invention: Preparation method of scratch-resistant polyurethane matt black finish for woodware Effective date of registration: 20160923 Granted publication date: 20160330 Pledgee: Bank of China Limited by Share Ltd Foshan branch Pledgor: United States (Foshan) Chemical Co., Ltd.|Foshan Wo Tai Chemical Co., Ltd. Registration number: 2016440000022 |
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Denomination of invention: Preparation method of scratch resistant polyurethane wood matt black finish Effective date of registration: 20220105 Granted publication date: 20160330 Pledgee: Bank of China Limited by Share Ltd. Foshan branch Pledgor: UNION (FOSHAN) CHEMICAL Co.,Ltd.|FOSHAN WOERTAI CHEMICAL Co.,Ltd. Registration number: Y2022980000040 |