CN101591502B - Polyurethane coating and preparation method thereof - Google Patents
Polyurethane coating and preparation method thereof Download PDFInfo
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- CN101591502B CN101591502B CN2008101086555A CN200810108655A CN101591502B CN 101591502 B CN101591502 B CN 101591502B CN 2008101086555 A CN2008101086555 A CN 2008101086555A CN 200810108655 A CN200810108655 A CN 200810108655A CN 101591502 B CN101591502 B CN 101591502B
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Abstract
The invention discloses a polyurethane coating containing a film forming matter, mica pearlescent pigment, dimethyl silicone polymer, organic solvent and firming agent, wherein the film forming matter is polyester polyol modified from fatty acid or the mixture of the polyester polyol and polyacrylic acid which are modified from the fatty acid; and the firming agent is isocyanate. A paint film obtained by the coating of the invention remarkably shows the varied colors and the three-dimensional effect of flower patterns on the appearance, has more exquisite grains of the flower patterns, is thinner and smooth, wider in range of application and is particularly suitable for shells of electronic products with higher performance requirement and small planes, such as the coating of the shell of a mobile phone or a notebook computer, thereby being beneficial to lowering the fraction defective of the electronic products.
Description
Technical field
The present invention relates to a kind of coating and preparation method thereof, more particularly, relate to a kind of polyurethane coating and preparation method thereof.
Background technology
Polyurethane coating has stronger wear resistance, good sticking power, and performances such as good oil resistant, acid and alkali-resistance, Application Areas is extensive, commonly used is sprayed at metal and plastic cement planar polyurethane coating multiform monochromatizing is transferred and smooth coating.
CN101117501A discloses a kind of aqueous hammer paint, it comprises water, water aluminum-silver slurry, film coalescence aid, frostproofer, anticorrosion and bactericidal agent, defoamer, dispersion agent, adjust agent, the two crosslinking acrylic acid emulsions of water-based, epoxy-acrylate emulsion, dispersible pigment color paste, thickening material, flow agent, the mallear stria agent, rust-preventive agent, increase hard agent, it is characterized in that, water 5-25 part, water aluminum-silver slurry 15-24 part, film coalescence aid 2.0-5.1 part, frostproofer 2.0-5.1 part, anticorrosion and bactericidal agent 0.1-0.3 part, defoamer 0.05-0.3 part, dispersion agent 0.1-0.3 part, adjust agent 0.1-0.6 part, the two crosslinking acrylic acid emulsion 30-60 parts of water-based, epoxy-acrylate emulsion 4.0-6.0 part, dispersible pigment color paste 3.0-5.1 part, thickening material 30-60 part, thickening material II 0.2-0.9 part, flow agent 0.2-0.8 part, mallear stria agent 0.5-1.2 part, rust-preventive agent 0.5-1.2 part, increase hard agent 0.1-1.2 part.Described film coalescence aid is one or more in 12 carbon alcohol esters, ethylene glycol monobutyl ether, butyl glycol ether, propylene-glycol ethyl ether, the ethylene glycol ethyl ether.The above-mentioned thicker coating thickness of polyurethane coating general requirement that produces three-dimensional pattern, be used for large-scale metallic surface more, on motor, lathe, machinery and household appliances, on the internal and external ornament that also can be used for building, the big and surface irregularity of the decorative pattern that this coating forms, physical and mechanical properties is relatively poor, be unsuitable for performance requriements higher, have the little planar phone housing or a spraying of notebook computer shell.
Summary of the invention
The objective of the invention is to overcome the big and surface irregularity of decorative pattern that the polyurethane coating of prior art forms, the defective that paint film property is relatively poor provides a kind of decorative pattern exquisiteness, the functional performance requriements polyurethane coating higher, the facet spraying and preparation method thereof that is suitable for.
The invention provides a kind of polyurethane coating, wherein, this coating contains filmogen, nacreous mica pigment, polydimethylsiloxane, organic solvent and solidifying agent, and described filmogen is fatty acid modified polyester polyol or is the mixture of the fatty acid modified pure and mild polyacrylic ester of polyester polyols; Described solidifying agent is an isocyanic ester.
The present invention also provides a kind of preparation method of polyurethane coating, wherein, this method comprises mixes filmogen, nacreous mica pigment, polydimethylsiloxane, solidifying agent with organic solvent, with the dope filtration that obtains, described filmogen is fatty acid modified polyester polyol or is the mixture of the fatty acid modified pure and mild polyacrylic ester of polyester polyols; Described solidifying agent is an isocyanic ester.
Polyurethane coating provided by the invention can produce unique stereoscopic sensation train of thought decorative pattern, coating film thickness is the thinnest to can be controlled between tens to tens microns, compare with the three-dimensional aqueous hammer paint of prior art, not only the pattern of surface detail has very big difference, in addition, because nacreous mica pigment in the polyurethane coating of the present invention, the mating reaction of polydimethylsiloxane and filmogen, make the paint film that obtains highlight out the changeable color and the stereoeffect of outward appearance decorative pattern, the decorative pattern lines is fine and smooth more, film thickness is thin and smooth smooth, use range is wider, it is higher to be particularly suitable for performance requriements, has little planar electronic product casing, as, the spraying of phone housing or notebook computer shell, help reducing the fraction defective of electronic product.
Embodiment
According to the present invention, described coating contains filmogen, nacreous mica pigment, polydimethylsiloxane, organic solvent and solidifying agent, and described filmogen is fatty acid modified polyester polyol or is the mixture of the fatty acid modified pure and mild polyacrylic ester of polyester polyols; Described solidifying agent is an isocyanic ester.
According to the present invention, the content adjustable extent broad of each material in the described polyurethane coating under the preferable case, is a benchmark with the gross weight of described polyurethane coating, and the content of described filmogen is 30-47 weight %, more preferably 35-45 weight %; The content of described nacreous mica pigment is 1-5 weight %, more preferably 1-3 weight %; The content of described polydimethylsiloxane is 0.001-0.1 weight %, more preferably 0.005-0.08 weight %; The content of described organic solvent is 50-67 weight %, more preferably 50-60 weight %; The content of described solidifying agent is 1-5 weight %, more preferably 3.5-4.5 weight %.
The weight-average molecular weight of described fatty acid modified polyester polyol is preferably 1500-2500, fatty acid modified polyester polyol with such weight-average molecular weight not only can provide very strong polar group, increase can also reduce crystallinity to the bonding strength of material.Described fatty acid modified polyester polyol can adopt prepared in various methods to obtain; for example; under protection of inert gas; in the presence of catalyzer; the mono fatty acid polyol ester that will have at least two hydroxyls contacts with polyprotonic acid and/or acid anhydrides; the condition of contact comprises that the contact temperature is 160-220 ℃, and be 1-5 hour duration of contact.Described have the mono fatty acid polyol ester of at least two hydroxyls and the mol ratio of polyprotonic acid and/or acid anhydrides can be 1: 0.9-1.1.Described mono fatty acid polyol ester with at least two hydroxyls can be monoglyceride, mono fatty acid trihydroxymethylpropanyl ester, mono fatty acid penta 3 alcohol esters and mono fatty acid 1,3, one or more in the 4-trihydroxybutane ester; Above-mentioned mono fatty acid polyol ester with at least two hydroxyls can for saturated also can be for unsaturated, carbonatoms is preferably 9-30; For example, can be glyceryl monostearate, single tripalmitin, Glyceryl Behenate, octadecenic acid glyceryl ester, erucic acid glyceryl ester, glyceryl linoleate, glyceryl linolenate, arachidonic acid glyceryl ester, the Stearinsaeure trihydroxymethylpropanyl ester, single Palmiticacid trihydroxymethylpropanyl ester, mountain Yu acid trihydroxymethylpropanyl ester, the octadecenic acid trihydroxymethylpropanyl ester, the erucic acid trihydroxymethylpropanyl ester, the linolic acid trihydroxymethylpropanyl ester, the linolenic acid trihydroxymethylpropanyl ester, the arachidonic acid trihydroxymethylpropanyl ester, Stearinsaeure penta 3 alcohol esters, single Palmiticacid penta 3 alcohol esters, mountain Yu acid penta 3 alcohol esters, octadecenic acid penta 3 alcohol esters, erucic acid penta 3 alcohol esters, linolic acid penta 3 alcohol esters, linolenic acid penta 3 alcohol esters, arachidonic acid penta 3 alcohol esters, Stearinsaeure 1,3,4-trihydroxybutane ester, single Palmiticacid 1,3,4-trihydroxybutane ester, mountain Yu acid 1,3,4-trihydroxybutane ester, octadecenic acid 1,3,4-trihydroxybutane ester, erucic acid 1,3,4-trihydroxybutane ester, linolic acid 1,3,4-trihydroxybutane ester, linolenic acid 1,3,4-trihydroxybutane ester and arachidonic acid 1,3, one or more in the 4-trihydroxybutane ester; Be preferably glyceryl monostearate and/or single tripalmitin in the specific embodiment of the invention.
Can select oneself in diacid, sebacic acid, Tetra hydro Phthalic anhydride and the maleic dicarboxylic acid anhydride one or more of described polyprotonic acid or acid anhydrides.Described catalyzer is generally acetate, and as sodium-acetate and/or Potassium ethanoate, described catalyst consumption can be the 1-10 weight % of reactant gross weight.Any one gas or the gaseous mixture of described rare gas element for not reacting with reactant and product is as zero group gas in the periodic table of chemical element and in the nitrogen one or more.
Described fatty acid modified polyester polyol also can be commercially available, for example the fatty acid modified polyester polyol of Bayer DesmophenRD 181X.
In order further to guarantee the performance of polyurethane coating, described filmogen is preferably the mixture of the fatty acid modified pure and mild polyacrylic ester of polyester polyols, the selectable range broad of the weight ratio of the described fatty acid modified pure and mild polyacrylic ester of polyester polyols, under the preferable case, the weight ratio of the described fatty acid modified pure and mild polyacrylic ester of polyester polyols is 2.5-3.5: 1.
The weight-average molecular weight of described polyacrylic ester can be 10000-30000, is preferably 20000-30000.Because soft section relative molecular weight of described polyester polyol be lower, soft section of aliphatic chain and functional group interpenetrate and have increased the biphase consistency for crosslinked hard section, thereby have improved intensity and modulus.Polyacrylate resin can improve glossiness, weathering resistance and the quick-drying of paint film.
Isocyanic ester is the general name of the various esters of isocyanic acid, with in the isocyanic ester-quantitative classification of NCO group, comprise monoisocyanates R-N=C=O and polyisocyanates.The kind of described monoisocyanates is conventionally known to one of skill in the art, the kind of described polyisocyanates is conventionally known to one of skill in the art, for example, HDI (1, the own isocyanic ester of 6-), among TDI (tolylene diisocyanate) and the MDI (diphenylmethanediisocyanate) one or more, because the polyisocyanates performed polymer has higher functionality, therefore, the present invention is preferably the polyisocyanates performed polymer, for example, comprise the HDI dimer, the HDI tripolymer, the TDI dimer, in TDI tripolymer and MDI dimer and the MDI tripolymer one or more, the preferred HDI tripolymer that adopts in the specific embodiment of the invention, described HDI tripolymer can prepare according to the method for well known to a person skilled in the art, also can be commercially available, for example the DesmodurN3300 of Beyer Co., Ltd, DesmodurN3390, the HDI tripolymer.According to the present invention, it is matrix that described nacreous mica pigment refers to natural high-density mica, and alternately coats the pearly pigment of multilayer titanium dioxide and ferric oxide on matrix.The present invention is not particularly limited described nacreous mica pigment, under the preferable case, in order to be more suitable in the spraying that is applied to have faceted electronic product casing, the diameter of described nacreous mica pigment is the 5-70 micron, be preferably 9-45 micron (nacreous mica pigment is irregular shape, and its diameter refers to the maximum distance of point-to-point transmission on the pearly pigment sheet); Density is the 2.5-3.5 gram per centimeter
3, be preferably the 2.8-3.0 gram per centimeter
3Described nacreous mica pigment can be commercially available, for example, and the Reflex Flash Copper product of the trade mark R-640S that CQV company produces.
The kind of described organic solvent is conventionally known to one of skill in the art, for example, can be selected from toluene, dimethylbenzene, vinyl acetic monomer, N-BUTYL ACETATE, butanone, pimelinketone, ethylene glycol ether acetate, methyl isopropylformic acid ketone and the ethylene glycol monobutyl ether one or more.
According to the present invention, described coating can also comprise auxiliary agent, and the kind of described auxiliary agent and consumption are conventionally known to one of skill in the art, for example, gross weight with described polyurethane coating is a benchmark, and the content of described auxiliary agent can be 0.1-2 weight %, is preferably 0.1-1 weight %; Described auxiliary agent can be selected from one or more in wetting dispersing agent, siccative and the chainextender.
The kind of described wetting dispersing agent is conventionally known to one of skill in the art, described wetting dispersing agent refer to any can improve described filmogen in solvent dispersion state, improve the material of the consistency and the wettability of filmogen, for example, can be the high molecular weight block copolymer of the affinity groups that contains pigment, described wetting dispersing agent is available commercially, for example, the DISPERBYK-163 of BYK company production.The amount of described wetting dispersing agent can be any consumption that is enough to make filmogen wetting, under the preferable case, is benchmark with the gross weight of described polyurethane coating, and the content of described wetting dispersing agent can be 0.01-2 weight %.
The kind of described siccative is conventionally known to one of skill in the art, described siccative refers to accelerate a curing of oxidized form cured coating film and the class catalyzer of time of drying, for example, can comprise the organic acid metal-salt, the kind of described organic acid metal-salt is conventionally known to one of skill in the art, for example, can comprise in cobalt, manganese, zirconium, calcium, zinc, tin, cerium, lanthanum and the lithium salts of naphthenic acid, sad, isocaprylic acid one or more.The amount of described siccative can be coated with any consumption of rete exsiccant for accelerating, and under the preferable case, is benchmark with the gross weight of described polyurethane coating, and the content of described siccative can be 0.01-2 weight %.
The kind of described chainextender is conventionally known to one of skill in the art, and described chainextender is meant the compound that can impel molecular chain to extend, expand.In the generation of polyether polyols with reduced unsaturation, be mainly the chemical of bifunctional.For example, but glycol or two amine low molecular compounds, as, can be selected from ethylene glycol, propylene glycol, 1,4-butyleneglycol, glycerol, TriMethylolPropane(TMP), 1,4-cyclohexanediol, Hydrogenated Bisphenol A, dimethylene phenyl glycol, Resorcinol bis-beta-hydroxyethyl ether, Resorcinol hydroxy ethers, diethanolamine, trolamine, methyldiethanolamine, diethyl toluene diamine and 3, one or more in the 5-disulfide group tolylene diamine.The amount of described chainextender is to be enough to make that molecular chain extends, any consumption of expansion, under the preferable case, is benchmark with the gross weight of described polyurethane coating, and the content of described chainextender can be 0.01-2 weight %.
According to the present invention, described coating can also comprise tinting pigment, be used to regulate the color of described coating, the kind of described tinting pigment is conventionally known to one of skill in the art, for example, can comprise carbon black, Rutile type Titanium Dioxide, and the condensation azo class of process pigmenting processing, benzimidazole ketone azo class, in phthalocyanine blue and the phthalocyanine green one or more, the consumption of described painted slurry can be for being enough to make the painted any consumption of slurry, under the preferable case, gross weight with described polyurethane coating is a benchmark, and the content of described tinting pigment is 0.1-6 weight %, more preferably 0.1-3 weight %.For example, described mill base can for yellowly among the color green slurry of the yellow slurry of TP-042 goldfish, the lemon yellow mill base of TP-043C, TP-051 of Shenzhen one ring chemical industry company limited, the color blue slurry of TP-061, the TP-041 starch, shades of colours such as the pink mill base of TP-019 and the purplish red mill base of TP-023, also can allocate the mill base of required color by the mixing of several mill bases.
According to the present invention, the preparation method of described polyurethane coating comprises filmogen, nacreous mica pigment, polydimethylsiloxane, solidifying agent is mixed with organic solvent, with the dope filtration that obtains, described filmogen is fatty acid modified polyester polyol or is the mixture of the fatty acid modified pure and mild polyacrylic ester of polyester polyols; Described solidifying agent is an isocyanic ester.Under the preferable case, described filmogen is the mixture of the fatty acid modified pure and mild polyacrylic ester of polyester polyols, and the weight ratio of the described fatty acid modified pure and mild polyacrylic ester of polyester polyols is preferably 2.5-3.5: 1.
It is benchmark that the consumption of each material makes the gross weight with described polyurethane coating, and the content of filmogen is 30-47 weight %, is preferably 35-45 weight %; The content of nacreous mica pigment is 1-5 weight %, is preferably 1-3 weight %; The content of polydimethylsiloxane is 0.001-0.1 weight %, is preferably 0.005-0.08 weight %; The content of organic solvent is 50-67 weight %, is preferably 50-60 weight %; The content of solidifying agent is 1-5 weight %, is preferably 3.5-4.5 weight %.
Preparation method according to coating provided by the invention, described filmogen, nacreous mica pigment, polydimethylsiloxane, solidifying agent is with can carry out simultaneously mixing of organic solvent also can proceed step by step, preferred earlier with filmogen, solidifying agent mixes with the part organic solvent, and with nacreous mica pigment and contain polydimethylsiloxane and the mixture of remainder organic solvent mixes, described weight ratio with filmogen and solidifying agent blended part organic solvent and remainder organic solvent is not particularly limited, their ratio can be 1: 0.1-0.6 is preferably 1: 0.2-0.4.
According to the present invention, described and polydimethylsiloxane blended organic solvent is preferably dimethylbenzene, because dimethylbenzene has low surface tension and can better disperse polydimethylsiloxane, make it to mix with other component, therefore, be preferably dimethylbenzene with polydimethylsiloxane blended organic solvent, the weight ratio of described polydimethylsiloxane and remainder organic solvent is not particularly limited, their ratio can be 1: 50-100 is preferably 1: 80-100.
If can also contain auxiliary agent and/or tinting pigment in the described coating, method provided by the invention also is included in before the filtration, obtaining containing in the slurries of filmogen, nacreous mica pigment, polydimethylsiloxane, solidifying agent and organic solvent, add described auxiliary agent and/or tinting pigment, and the step that mixes.Described auxiliary agent and tinting pigment can add simultaneously also and can add step by step, and the order of adding does not have remarkable influence to the performance of coating.
It is benchmark that the consumption of described auxiliary agent makes the gross weight with the polyurethane coating that obtains, and the content of auxiliary agent is 0.1-2 weight %, is preferably 0.1-1 weight %; It is benchmark that the consumption of described tinting pigment makes the gross weight with the polyurethane coating that obtains, and the content of tinting pigment is 0.1-6 weight %, is preferably 0.1-3 weight %.
According to method provided by the invention, an embodiment preferred comprises: mix tinting pigment (1) with filmogen, mixes with 1200-1400 rev/min rotating speed; (2) auxiliary agent (one or more in wetting dispersing agent, siccative and the chainextender) and the organic solvent that the described solidifying agent of adding, selectivity contain in the mixture that step (1) obtains mixes; (3) in the mixture that step (2) obtains, add nacreous mica pigment, mix, and mix with the mixture that contains polydimethylsiloxane and remainder organic solvent with 300-500 rev/min rotating speed; (4) filter the slurries that obtain.
In order to make each material blended more even, preferably carry out blended with above-mentioned rotating speed.
Described filtering method can adopt and well known to a person skilled in the art the whole bag of tricks, sieves as adopting 250-400 purpose gauze or stainless (steel) wire.
Coating provided by the invention is suitable as the finish paint of the plastic fittings of the finish paint of various material surfaces, particularly portable device, as the finish paint of handset shell surface, portable computer external, makeup shell.Coating thickness is generally the 10-20 micron, and room temperature left standstill 15 minutes, dries 20 minutes, and can obtain good solidifying film layer for 70 ℃.
The following examples will the present invention will be further described, and fatty acid modified polyester polyol among the embodiment in the used filmogen is for preparing according to following method:
With mol ratio is the four-necked bottle that 1: 1 Tetra hydro Phthalic anhydride and single tripalmitin place band whipping appts, fractional column and thermometer, and adds the catalyst acetic acid sodium of reactant gross weight 2 weight %, is feeding N
2The time slowly be warming up to 180 ℃, backflow esterification 2 hours is warming up to 200 ℃ then, backflow esterification 2 hours is warming up to 220 ℃ at last, continues the backflow esterification.Control fractional column head temperature is at 100 ± 1 ℃, react when acid number is lower than 40mg KOH/g and begin to vacuumize, stopped reaction when acid number is lower than 3mgKOH/g, it is standby to be cooled to 160 ℃ of dischargings, obtain fatty acid modified polyester polyol, its number-average molecular weight is 2000-2500.Reaction formula is as shown in the formula shown in 1:
Formula 1
Embodiment 1-4
The following examples illustrate coating provided by the invention and preparation method thereof.
(1) tinting pigment that selectivity is contained mixes with filmogen, mixes with 1400 rev/mins rotating speeds; (2) auxiliary agent and the organic solvent that the described solidifying agent of adding, selectivity contain in the mixture that step (1) obtains mixes; (3) mixture that obtains in step (2) adds nacreous mica pigment, mixes with 400 rev/mins rotating speeds, and mixes with the mixture that contains polydimethylsiloxane and remainder organic solvent; (4) filter the slurries that obtain,, obtain coating T1-T4 provided by the invention to remove residue wherein.
Table 1 has provided each material consumption.Table 2 has provided the composition of T1-T4.
Embodiment 5
This embodiment illustrates the preparation of the polyurethane coating that the present invention improves.
Method according to embodiment 1 prepares coating, and different is, each component is mixed simultaneously, obtains coating T5.
Table 1
| The kind of each material and consumption | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Filmogen | Fatty acid modified polyester polyol 25 gram polyacrylic ester (weight-average molecular weight 25000) 10 grams | Fatty acid modified polyester polyol 35 gram polyacrylic ester (weight-average molecular weight 25000) 11 grams | Fatty acid modified polyester polyol 39 grams | Fatty acid modified polyester polyol 40 gram polyacrylic ester (weight-average molecular weight 25000) 6 grams |
| Tinting pigment | Pink mill base 2.2 grams of the one ring chemical industry TP-019 of company limited of Shenzhen | Color green slurry 1.2 grams of the TP-051 of Shenzhen one ring chemical industry company limited | ?- | Color green slurry 1.2 grams of the TP-051 of Shenzhen one ring chemical industry company limited |
| Solidifying agent | DesmodurN3300HDI tripolymer 3.7 grams | DesmodurN3300HDI tripolymer 4.0 grams | DesmodurN3390HDI tripolymer 4.5 grams | DesmodurN3300HDI tripolymer 4.0 grams |
| The part organic solvent | Toluene 15 grams, vinyl acetic monomer 15 grams, N-BUTYL ACETATE 4 grams, butanone 3 grams, pimelinketone 8 grams, ethylene glycol ether acetate 4 grams, methyl iso-butyl ketone (MIBK) 4 grams, ethylene glycol monobutyl ether 3.2 grams | Toluene 10 grams, vinyl acetic monomer 14 grams, N-BUTYL ACETATE 3 grams, butanone 3 grams, pimelinketone 5 grams, ethylene glycol ether acetate 3 grams, methyl iso-butyl ketone (MIBK) 3 grams, ethylene glycol monobutyl ether 2.6 grams | Toluene 15 grams, vinyl acetic monomer 15 grams, N-BUTYL ACETATE 4 grams, butanone 3 grams, pimelinketone 4.6 grams, ethylene glycol ether acetate 4 grams, methyl iso-butyl ketone (MIBK) 3 grams, ethylene glycol monobutyl ether 4 grams | Toluene 10 grams, vinyl acetic monomer 14 grams, N-BUTYL ACETATE 3 grams, butanone 3 grams, pimelinketone 5 grams, ethylene glycol ether acetate 3 grams, methyl iso-butyl ketone (MIBK) 3 grams, ethylene glycol monobutyl ether 2.6 grams |
| The remainder organic solvent | Dimethylbenzene 0.8 gram | Dimethylbenzene 2.4 grams | Dimethylbenzene 1.4 grams | Dimethylbenzene 2.4 grams |
| Polydimethylsiloxane | 0.008 gram | 0.03 gram | 0.015 gram | 0.03 gram |
| Nacreous mica pigment | 1.1 gram (CQV R-640S, size9-45) | 2.0 gram (CQV R-640S, size9-45) | 2.6 gram (CQV R-640S, size9-45) | 2.0 gram (CQV R-640S, size9-45) |
| Wetting dispersing agent | DISPERBYK-163 0.08 gram that BYK company produces | DISPERBYK-163 0.5 gram that BYK company produces | ?- | DISPERBYK-163 0.5 gram that BYK company produces |
| Siccative | Siccative is that the high dibutyl tin dilaurate of producing (trade mark T-12) 0.02 gram is liked by Germany | ?- | ?- | ?- |
Table 2
| The embodiment numbering | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Finish code | T1 | T2 | T3 | T4 |
| Filmogen content, weight % | 35.3 | 46.1 | 39.0 | 46.1 |
| Tinting pigment content, weight % | 2.22 | 1.20 | - | 1.20 |
| Curing agent content, weight % | 3.73 | 4.0 | 4.50 | 4.0 |
| Organic solvent content, weight % | 57.5 | 46.1 | 53.9 | 46.1 |
| Polydimethylsiloxane, weight % | 0.008 | 0.03 | 0.015 | 0.03 |
| Nacreous mica pigment, weight % | 1.1 | 2.0 | 2.60 | 2.0 |
| Wetting dispersing agent, weight % | 0.08 | 0.5 | - | 0.5 |
| Siccative, weight % | 0.02 | - | - | - |
Embodiment 6-10
The following examples illustrate the performance of coating provided by the invention.
The coating T1-T5 that embodiment 1-5 is obtained is sprayed on the plastic casing, and room temperature left standstill 15 minutes, and 70 ℃ of oven dry 20 minutes obtain thickness and be 20 microns solidifying film layer.Can see, the paint film layer thinner thickness, and smooth smooth, paint film can demonstrate three-dimensional pattern, and the decorative pattern color can change along with different visual angles.The performance of test solidifying film layer, the result is as shown in table 1.
Wherein, the 7-IBB type RCA abrasion instrument that wear resistance measure to use U.S. Nuo Man Instrument and Equipment Company to produce, under the effect of 175 gram forces, the paint film after the mill spraying, during the show-through material of paint film, the number of times that rubber wheel rotates.
Sticking power is measured with drawing the lattice device and is drawn 100 1 millimeter * 1 millimeter square lattice at sprayed surface, the model of producing with Minnesota Mining and Manufacturing Company is 600 smooth being bonded on the grid of scotch tape, do not stay a space, vertically uncover with utmost dispatch then, observe cut edge and have or not depainting.Is 5B as the depainting amount between 0-5%, is 4B between 5-10%, is 3B between 10-20%, is 2B between 20-30%, is B between 30-50%, is being 0B more than 50%.
Measurement of hardness is carried out according to chapter 4 regulation among the GB/6739T.
To get concentration be 99% alcohol in order to dip in clean gauze in the ethanol-tolerant method for measuring, puts on the skin back and forth at the paint film same position with 0.5 kilogram power and wipe away 500 times, and the observation finish paint has or not variable color.
Shock-resistant mensuration is pressed the regulation of GB/T1732 and is carried out.
The weak acid resistant measuring method is immersed in the acetic acid 3 minutes for making the paint film model under normal temperature, take out with the filter paper examination and do, and observing paint film has no abnormal.
The measuring method of anti-weak base is immersed in 5% the potassium hydroxide solution 3 minutes for making the paint film model under normal temperature, take out with the filter paper examination and do, and observing paint film has no abnormal.
The salt water resistance measuring method is immersed in 5% the sodium chloride brine 24 hours for making the paint film model under room temperature, take out with the filter paper examination and do, and observing paint film has no abnormal.
Table 3
| The embodiment numbering | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 |
| Finish code | T1 | T2 | T3 | T4 | T5 |
| Wear resistance (inferior) | 470 | 480 | 470 | 460 | 465 |
| Sticking power | 5B | 5B | 5B | 5B | 5B |
| Anti-zoned trace | 4N | 4N | 3N | 3N | 4N |
| Hardness | 2H | 2H | 2H | 2H | 2H |
| Ethanol-tolerant | Nondiscoloration | Nondiscoloration | Nondiscoloration | Nondiscoloration | Nondiscoloration |
| Shock-resistant | ≥45cm·1kg | ≥45cm·1kg | ≥40cm·1kg | ≥40cm·1kg | ≥45cm·1kg |
| Salt water resistance | No abnormal | No abnormal | No abnormal | No abnormal | No abnormal |
From the result of table 3 as can be seen, performances such as the wear resistance of coating provided by the invention, sticking power, hardness and weathering resistance are all more excellent.
Claims (13)
1. polyurethane coating, it is characterized in that, this coating contains filmogen, nacreous mica pigment, polydimethylsiloxane, organic solvent and solidifying agent, wherein, gross weight with described polyurethane coating is a benchmark, the content of described filmogen is 30-47 weight %, the content of described nacreous mica pigment is 1-5 weight %, the content of described polydimethylsiloxane is 0.001-0.1 weight %, the content of described organic solvent is 50-67 weight %, and the content of described solidifying agent is 1-5 weight %; Described filmogen is fatty acid modified polyester polyol or is the mixture of the fatty acid modified pure and mild polyacrylic ester of polyester polyols; Described solidifying agent is an isocyanic ester.
2. coating according to claim 1, wherein, the weight ratio of the described fatty acid modified pure and mild polyacrylic ester of polyester polyols is 2.5-3.5: 1.
3. coating according to claim 1 and 2; wherein; the preparation method of described fatty acid modified polyester polyol is included under the protection of inert gas, and in the presence of catalyzer, the mono fatty acid polyol ester that will have at least two hydroxyls contacts with polyprotonic acid and/or acid anhydrides.
4. coating according to claim 3, wherein, the condition of described contact comprises that the contact temperature is 160-220 ℃, be 1-5 hour duration of contact; Described have the mono fatty acid polyol ester of at least two hydroxyls and the mol ratio of polyprotonic acid and/or acid anhydrides is 1: 0.9-1.1; Described catalyzer is sodium-acetate and/or Potassium ethanoate, and described catalyst consumption is the 1-10 weight % of reactant gross weight.
5. coating according to claim 1, wherein, this coating also comprises auxiliary agent and tinting pigment, is benchmark with the gross weight of described polyurethane coating, the content of described auxiliary agent is 0.1-2 weight %, and described auxiliary agent is selected from one or more in wetting dispersing agent, siccative and the chainextender; Gross weight with described polyurethane coating is a benchmark, and the content of described tinting pigment is 0.1-6 weight %.
6. coating according to claim 1, wherein, described organic solvent is selected from one or more in toluene, dimethylbenzene, vinyl acetic monomer, N-BUTYL ACETATE, butanone, pimelinketone, ethylene glycol ether acetate, methyl iso-butyl ketone (MIBK) and the ethylene glycol monobutyl ether.
7. the preparation method of the described polyurethane coating of claim 1, it is characterized in that, this method comprises mixes filmogen, nacreous mica pigment, polydimethylsiloxane, solidifying agent with organic solvent, with the dope filtration that obtains, described filmogen is fatty acid modified polyester polyol or is the mixture of the fatty acid modified pure and mild polyacrylic ester of polyester polyols; Described solidifying agent is an isocyanic ester, wherein, it is benchmark that the consumption of each material makes the gross weight with described polyurethane coating, the content of filmogen is 30-47 weight %, the content of nacreous mica pigment is 1-5 weight %, the content of polydimethylsiloxane is 0.001-0.1 weight %, and the content of organic solvent is 50-67 weight %, and the content of solidifying agent is 1-5 weight %.
8. method according to claim 7, wherein, the weight ratio of the described fatty acid modified pure and mild polyacrylic ester of polyester polyols is 2.5-3.5: 1.
9. according to claim 7 or 8 described methods; wherein; the preparation method of described fatty acid modified polyester polyol is included under the protection of inert gas, and in the presence of catalyzer, the mono fatty acid polyol ester that will have at least two hydroxyls contacts with polyprotonic acid and/or acid anhydrides.
10. method according to claim 9, wherein, the condition of described contact comprises that the contact temperature is 160-220 ℃, be 1-5 hour duration of contact; Described have the mono fatty acid polyol ester of at least two hydroxyls and the mol ratio of polyprotonic acid and/or acid anhydrides is 1: 0.9-1.1; Described catalyzer is sodium-acetate and/or Potassium ethanoate, and described catalyst consumption is the 1-10 weight % of reactant gross weight.
11. method according to claim 7, wherein, described with filmogen, nacreous mica pigment, polydimethylsiloxane, solidifying agent and organic solvent blended method comprise, earlier with filmogen, solidifying agent mixes with the part organic solvent, and with nacreous mica pigment and contain polydimethylsiloxane and mix with the mixture of remainder organic solvent, described weight ratio with filmogen and solidifying agent blended part organic solvent and remainder organic solvent is 1: 0.1-0.6, the weight ratio of described polydimethylsiloxane and remainder organic solvent is 1: 50-100.
12. method according to claim 7, wherein, this method comprises that (1) mix tinting pigment with filmogen, mixes with 1200-1400 rev/min rotating speed; (2) in the mixture that step (1) obtains, add solidifying agent and organic solvent, mix; (3) in the mixture that step (2) obtains, add nacreous mica pigment, mix, and mix with the mixture that contains polydimethylsiloxane and remainder organic solvent with 300-500 rev/min rotating speed; (4) filtration obtains slurries.
13. according to claim 11 or 12 described methods, wherein, described organic solvent is selected from one or more in toluene, dimethylbenzene, vinyl acetic monomer, N-BUTYL ACETATE, butanone, pimelinketone, ethylene glycol ether acetate, methyl iso-butyl ketone (MIBK) and the ethylene glycol monobutyl ether; Organic solvent in the described mixture that contains polydimethylsiloxane and remainder organic solvent is a dimethylbenzene.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0422357A2 (en) * | 1989-10-12 | 1991-04-17 | BASF Corporation | Nonionically stabilized polyester urethane resins for water-borne coating compositions |
| CN1422147A (en) * | 2000-04-11 | 2003-06-04 | 诺沃恩Ip控股公司 | Stable aqueous surfactant compositions |
| CN101052689A (en) * | 2004-09-03 | 2007-10-10 | 海迪·M·埃克特 | Decorating coating |
-
2008
- 2008-05-30 CN CN2008101086555A patent/CN101591502B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0422357A2 (en) * | 1989-10-12 | 1991-04-17 | BASF Corporation | Nonionically stabilized polyester urethane resins for water-borne coating compositions |
| CN1422147A (en) * | 2000-04-11 | 2003-06-04 | 诺沃恩Ip控股公司 | Stable aqueous surfactant compositions |
| CN101052689A (en) * | 2004-09-03 | 2007-10-10 | 海迪·M·埃克特 | Decorating coating |
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