CN103614043A - Reversible temperature indicating powder coating, and preparation method and application method thereof - Google Patents
Reversible temperature indicating powder coating, and preparation method and application method thereof Download PDFInfo
- Publication number
- CN103614043A CN103614043A CN201310600785.1A CN201310600785A CN103614043A CN 103614043 A CN103614043 A CN 103614043A CN 201310600785 A CN201310600785 A CN 201310600785A CN 103614043 A CN103614043 A CN 103614043A
- Authority
- CN
- China
- Prior art keywords
- powder coating
- temperature indicating
- reversible
- reversible temperature
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Paints Or Removers (AREA)
Abstract
The invention relates to a reversible temperature indicating powder coating, comprising the following components in parts by weight: 70-80 parts of glycidyl methacrylate (GMA) acrylic resin, 15-25 parts of dodecanedioic acid, 0.6-1 part of flatting agent, 0.2-0.4 parts of anti-yellowing benzoin, 2-13 parts of reversible thermochromic pigment and 0.01-5 parts of other pigments except for the reversible thermochromic pigment. The powder coating disclosed by the invention is exquisite in appearance, has the functionality of indicating temperature, displays a specific color at a certain temperature, and achieves instant color change when reaching a color change temperature; the traditional solvent color-change coating is abandoned under the condition that the environmental requirements are gradually increased; a powder coating form free of a solvent to release is adopted, so that the powder coating has higher color retention, is longer in service life, and has excellent decorative property and weather fastness and the hardness reaching 2H-3H; meanwhile, the powder coating can be applied outside, and also can be applied inside; the application range is expanded, and the production cost of an enterprise is reduced.
Description
Technical field
The invention belongs to technical field of coatings, relate to powder coating, especially a kind of reversible temperature indicating powder coating and preparation method thereof and using method.
Background technology
Powder coating and application techniques thereof are development in recent years novel process, new technologies rapidly, there is the energy of saving and resource, reduce environmental pollution, simple process, easily realize the features such as automatization, coating is sturdy and durable, powder is recyclable, caused the attention of countries in the world coating industries.Along with widespread use and the further investigation of powder coating, the performance of powder coating is being improved always, and not only its decorative effect requires more and more higher, its functional requirement is also more and more, the double antiseptic powder that pipeline is used, anti-bacterial powder, antistatic powder, conductive powder etc.The coating that also has now ask for something energy indicated temperature, such as baby's milk cup, if the coating of outside can indicated temperature, just can save the step of mother's temperature indicating; The thermo-paint for external coating (EC) of chassis lid, can know whether machine is permanent in service heating; It is normal etc. that the outside surface spraying temperature indicating powder of scatterer can know whether scatterer dispels the heat, therefore according to different usages, not only need this thermoindicator paint to there is indicated temperature, have outside the effect of anti-corrosion function, also should there is high-decoration, the requirement of high-wearing feature.
At present, existing solvent-borne type thermo-paint is owing to containing solvent, often there is the phenomenon of a large amount of solvent evaporates, to have hardness lower for existing common epoxy/polyester type temperature indicating powder coating in addition, hardness generally can only be resistance to H even below, tint retention is poor, the shortcoming that the variable color life-span is shorter, and camouflage paint is expensive, the production cost of enterprise is higher.
By retrieval, find following two pieces of patent documents relevant to patent application of the present invention:
1, a kind of thermo-paint (CN102850834A), its formula comprises: lead stearate 25-30 weight part, eicosanoic acid 20-25 weight part, methylcellulose gum 1-2 weight part, ethyl cellulose 1-2 weight part, dimethylbenzene 20-30 weight part, propyl carbinol 15-20 weight part.The present invention is solvent-borne type thermo-paint, have certain temperature indicating function, but the volatilization of solvent causes certain environmental pollution.
2, temperature sensing color change power coating (CN102051109), its formula comprises: saturated hydroxy polyester resin 50-70 part, triglycidyl isocyanurate 3.7-5.0 part; Anti-yellowing change st-yrax 0.01-0.03 part; Flow agent 0.4-1.0 part; Wetting enhancer 0.5-1.5 part; Filler 10-30 part; Colorant 0.3-20.The present invention is by the optimization of formulation for coating material, and cooperatively interacting of different auxiliary agents, changes along with the variation of temperature, at different temperature, shows distinct colors, plays the effect of temperature-prompting or warning.
By technical characterictic, contrasting, there are the different of essence from patent application of the present invention in above-mentioned two pieces of patent publication us.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, a kind of higher tint retention that not only has is provided, the longer variable color life-span, and there is splendid ornamental and weathering resistance, hardness also can reach 2H-3H, there is longer work-ing life, more durable reversible temperature indicating powder coating, meanwhile, the preparation method of this reversible temperature indicating powder coating is simple, with low cost, reduced the production cost of enterprise.
The technical solution adopted for the present invention to solve the technical problems is:
A reversible temperature indicating powder coating, its raw material formation component and parts by weight thereof are as follows:
And the hydroxyl value of described GMA type acrylic resin is 18-50mgKOH/g, epoxy equivalent (weight) is 430-500g/mol.
And described flow agent is acrylate type flow agent.
And described reversible heat discoloration pigment is microencapsulation material.
And the discoloring temperature scope of described heat discoloration pigment is 40 ℃～60 ℃.
The preparation method of reversible temperature indicating powder coating as above, step is as follows:
Add all materials to high speed mixer, after dry blending, being added to forcing machine ，Yi district temperature is 75-85 ℃, two district's temperature are 90-100 ℃, carry out melting, mixing, extrude, cooling, compressing tablet, then through pulverizer pulverizing, classification, sieve, pack, obtain reversible temperature indicating powder coating.
The using method of reversible temperature indicating powder coating as above, is sprayed on metallic surface by reversible temperature indicating powder coating, and 180 ± 5 ℃ are toasted 15 ± 5 minutes.
Advantage of the present invention and positively effect are:
1, the decoration type powder coating that the reversible temperature indicating powder coating of the present invention is a kind of outward appearance grace, have again can indicated temperature functional, show at a certain temperature specific color, and reach discoloring temperature instant color-changing; In the situation that environmental requirement improves day by day, abandoned solvent-borne type allochroic paint in the past, adopted solvent-free powder coating form of emitting; This powder coating has higher tint retention, the longer variable color life-span, and there is splendid ornamental and weathering resistance, hardness also can reach 2H-3H, has longer work-ing life, more durable; Meanwhile, this powder coating both can also can expand its use range for indoor for open air, had reduced the production cost of enterprise.
2, the resin that powder coating of the present invention adopts is GMA type acrylic resin (being glycidyl methacrylate type acrylic resin), the powder coating of vinylformic acid system has high tint retention, can extend the variable color life-span of reversible temperature indicating powder, and there is high-decoration attractive in appearance and splendid chemical resistant properties and physicals, there is again the function that can indicate specified temp.
3, the acrylic type flow agent that powder coating of the present invention adopts is a kind of acrylic copolymer with splendid recoatability and ply adhesion performance, has eliminated surface imperfection, has improved clarity and the transparency of filming.
4, powder coating of the present invention adopts anti-yellowing change st-yrax as defoamer, both can play froth breaking and improve the effect of surperficial levelling, can reduce again the generation of the Yellowing that high temperature brings resin and pigment, has guaranteed the bright-coloured degree of this powder film.
5, powder coating of the present invention adopts the camouflage paint of microencapsulation material, can heatproof to 200 ℃, the phase transformation of its principle for being caused by temperature, the change of molecular arrangement or the electronics transfer in organic compound etc., and variation with temperature constantly changes, there is reversibility and unlimited repeatability.
Embodiment
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
The method of using in the present invention, if no special requirements, is ordinary method; The reagent using in the present invention, if no special requirements, is commercially available prod.
In the present invention, the hydroxyl value of GMA type acrylic resin is 18-50mgKOH/g, and epoxy equivalent (weight) is 430-500g/mol, and for example it can be for being the EP-455 of ESTRON company, EP-555 etc.
The reversible heat discoloration pigment using in the present invention is microencapsulation material, can repeatedly unlimitedly according to temperature, produce colour-change.
Embodiment 1:
A reversible temperature indicating powder coating, its raw material formation component and parts by weight thereof are as follows:
The preparation method of above-mentioned reversible temperature indicating powder coating, step is as follows:
Above-mentioned material is added to high speed mixer, after dry blending, be added to forcing machine, one district's temperature is 80-90 ℃, two district's extrusion temperatures be 110-120 ℃ carry out melting, mixing, extrude, cooling, compressing tablet, again through pulverizer pulverizing, classification, sieve, pack, become the powder coating final product of particle diameter suitable (generally at 32-36um), obtain reversible temperature indicating powder coating.
The using method of above-mentioned reversible temperature indicating powder coating is as follows:
This reversible temperature indicating powder coating is sprayed on to metallic surface, or is sprayed on priming paint, 180 ℃ are toasted 15 minutes,, after ground drop priming, spray especially, effect is better.This reversible temperature indicating powder coating is as Lacquer finish powder coating, existing attractive in appearance ornamental, has again high corrosion-resistant and high rigidity characteristic.
Embodiment 2:
A reversible temperature indicating powder coating, its raw material formation component and parts by weight thereof are as follows:
The preparation method of above-mentioned reversible temperature indicating powder coating and using method are with embodiment 1.
Embodiment 3:
A reversible temperature indicating powder coating, its raw material formation component and parts by weight thereof are as follows:
The practical application effect of powder coating of the present invention and test situation:
For checking practical application effect of the present invention, concrete operations are as follows: the powder coating that embodiment 1 is prepared is sprayed on through parkerized metallic surface, put into high temperature oven through 180 ℃/15-20 minute baking, make it completion of cure, taking-up exemplar is cooling, obtains exemplar A, and the powder coating that example 2,3 is made is made exemplar, making method is with embodiment 1, the exemplar B obtaining and exemplar C.Mainly the possibility of reversal warm nature of A, B and C is done and compared.
First, powder coating of the present invention has been carried out to the detection of the test item in table 1, detected result is in Table 1.
The shock-resistance of filming is undertaken by GB/T1732-1993 regulation;
Coating film gloss degree is pressed the regulation of GB/T9754, with 60 ° of angles, tests;
Hardness of film is undertaken by the regulation of GB/T6739-2006;
Coating alkali resistance is undertaken by first method (infusion method) in GB/T9274-1988;
Coating acid resistance is undertaken by first method (infusion method) in GB/T9274-1988;
The correlation detection repertory of table 1 powder coating of the present invention
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Outward appearance | Smooth surface is smooth, full thin | Smooth surface is smooth, full | Smooth surface is smooth, full |
| Gloss | ≥95° | ≥95° | ≥95° |
| Impact | By positive and negative 50KG | By positive and negative 50KG | By positive and negative 50KG |
| Coating hardness | 3H | 3H | 3H |
| Ageing resistance (QUV) | 1500h, variable color≤2 grade | 1500h, variable color≤2 grade | 1500h, variable color≤2 grade |
| Alkali resistance | Without abnormal/450h | Without abnormal/450h | Without abnormal/450h |
| Acid resistance | Without abnormal/450h | Without abnormal/450h | Without abnormal/450h |
| Hot water resistance (95 ℃/2h) | Without abnormal | Without abnormal | Without abnormal |
| Reversibility (colding and heat succeed each other) | >=10000 times | >=10000 times | >=10000 times |
Detected result by table 1 can be found out, the detected result of three embodiment is identical, just the color of discoloring temperature and variation is different, explanation is according to the combination of different camouflage paints, can do the reversible thermocoating of a series of color change intervals, and this invention has good decorate properties and splendid weathering resistance, chemical resistant properties, resistance to boiling water, and after 95 ℃/2h, after colding and heat succeed each other, color can change 10000 times above (test is only accomplished 10000 times, the sign that colour change function does not weaken), its discoloring temperature is according to the difference of pigment and difference, its color change interval can be accomplished 30 ℃-200 ℃, the invention solves the poor problem of camouflage paint tint retention expensive and ordinary powder, also customer service the pollution problem that causes of common liquid coating, there is more wide application prospect.
Claims (7)
1. a reversible temperature indicating powder coating, is characterized in that: its raw material form component and parts by weight as follows:
2. reversible temperature indicating powder coating according to claim 1, is characterized in that: the hydroxyl value of described GMA type acrylic resin is 18-50mgKOH/g, and epoxy equivalent (weight) is 430-500g/mol.
3. reversible temperature indicating powder coating according to claim 1, is characterized in that: described flow agent is acrylate type flow agent.
4. reversible temperature indicating powder coating according to claim 1, is characterized in that: described reversible heat discoloration pigment is microencapsulation material.
5. reversible temperature indicating powder coating according to claim 1, is characterized in that: the discoloring temperature scope of described heat discoloration pigment is 40 ℃～60 ℃.
6. a preparation method for the reversible temperature indicating powder coating as described in claim 1 to 5 any one, is characterized in that: step is as follows:
Add all materials to high speed mixer, after dry blending, being added to forcing machine ，Yi district temperature is 75-85 ℃, two district's temperature are 90-100 ℃, carry out melting, mixing, extrude, cooling, compressing tablet, then through pulverizer pulverizing, classification, sieve, pack, obtain reversible temperature indicating powder coating.
7. a using method for the reversible temperature indicating powder coating as described in claim 1 to 5 any one, is characterized in that: reversible temperature indicating powder coating is sprayed on to metallic surface, and 180 ± 5 ℃ are toasted 15 ± 5 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310600785.1A CN103614043B (en) | 2013-11-21 | 2013-11-21 | A kind of reversible temperature indicating powder coating and preparation method thereof and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310600785.1A CN103614043B (en) | 2013-11-21 | 2013-11-21 | A kind of reversible temperature indicating powder coating and preparation method thereof and using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103614043A true CN103614043A (en) | 2014-03-05 |
| CN103614043B CN103614043B (en) | 2016-02-10 |
Family
ID=50164764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310600785.1A Expired - Fee Related CN103614043B (en) | 2013-11-21 | 2013-11-21 | A kind of reversible temperature indicating powder coating and preparation method thereof and using method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103614043B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712122A (en) * | 2015-02-05 | 2015-06-17 | 中山市极地阳光木业有限公司 | Temperature control color-variable decorative sheet |
| CN105176331A (en) * | 2015-09-25 | 2015-12-23 | 科威嘉粉末涂料（天津）有限公司 | Acrylic acid and silicon-aluminum composite high-heat-dissipation powder coating for engine |
| CN106336779A (en) * | 2016-09-23 | 2017-01-18 | 北京新能源汽车股份有限公司 | Thermopaint and application thereof |
| CN106380143A (en) * | 2016-08-30 | 2017-02-08 | 派丽(上海)管理有限公司 | Temperature-variable cement-based colored caulking compound with lasting effect |
| CN106479312A (en) * | 2016-09-23 | 2017-03-08 | 北京新能源汽车股份有限公司 | A kind of thermo-color and its application |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004346257A (en) * | 2003-05-26 | 2004-12-09 | Pilot Ink Co Ltd | Thermochromic liquid composition having metallic gloss |
| CN101085764A (en) * | 2007-07-09 | 2007-12-12 | 南京林业大学 | Synthesis method for (methyl)glycidyl acrylate |
| JP4347749B2 (en) * | 2004-06-02 | 2009-10-21 | パイロットインキ株式会社 | Thermosensitive color-change color memory laminate |
| CN101712834A (en) * | 2009-11-27 | 2010-05-26 | 广州擎天实业有限公司 | Doodling prevention powder coating and preparation method thereof |
| CN103391984A (en) * | 2011-02-24 | 2013-11-13 | 株式会社樱花彩色笔 | Thermochromic composition |
-
2013
- 2013-11-21 CN CN201310600785.1A patent/CN103614043B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004346257A (en) * | 2003-05-26 | 2004-12-09 | Pilot Ink Co Ltd | Thermochromic liquid composition having metallic gloss |
| JP4347749B2 (en) * | 2004-06-02 | 2009-10-21 | パイロットインキ株式会社 | Thermosensitive color-change color memory laminate |
| CN101085764A (en) * | 2007-07-09 | 2007-12-12 | 南京林业大学 | Synthesis method for (methyl)glycidyl acrylate |
| CN101712834A (en) * | 2009-11-27 | 2010-05-26 | 广州擎天实业有限公司 | Doodling prevention powder coating and preparation method thereof |
| CN103391984A (en) * | 2011-02-24 | 2013-11-13 | 株式会社樱花彩色笔 | Thermochromic composition |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712122A (en) * | 2015-02-05 | 2015-06-17 | 中山市极地阳光木业有限公司 | Temperature control color-variable decorative sheet |
| CN105176331A (en) * | 2015-09-25 | 2015-12-23 | 科威嘉粉末涂料（天津）有限公司 | Acrylic acid and silicon-aluminum composite high-heat-dissipation powder coating for engine |
| CN106380143A (en) * | 2016-08-30 | 2017-02-08 | 派丽(上海)管理有限公司 | Temperature-variable cement-based colored caulking compound with lasting effect |
| CN106336779A (en) * | 2016-09-23 | 2017-01-18 | 北京新能源汽车股份有限公司 | Thermopaint and application thereof |
| CN106479312A (en) * | 2016-09-23 | 2017-03-08 | 北京新能源汽车股份有限公司 | A kind of thermo-color and its application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103614043B (en) | 2016-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103614043B (en) | A kind of reversible temperature indicating powder coating and preparation method thereof and using method | |
| CN102888163B (en) | One glass ornaments use coating on Christmas and preparation method thereof and application | |
| CN100543096C (en) | Disposable spray finishing is with coating and purposes | |
| CN108059858B (en) | Coloring layer coating suitable for silver alumite hot stamping foil and preparation method thereof | |
| CN101747826A (en) | Low temperature curing epoxy low-gloss powder coating and preparation method thereof | |
| CN101921517B (en) | Dark colour-system reflection-type outer wall thermal insulation coating and preparation method thereof | |
| CN103122205A (en) | Low-temperature curing super-weatherability powder coating | |
| CN105131756A (en) | Paint special for automotive exterior PP material and preparation method | |
| CN106118285B (en) | A kind of skin recoating heat-reflecting insulating coating and preparation method thereof | |
| CN105505115A (en) | Powder coating with high weather resistance and good decorative effect | |
| CN105505093A (en) | Environment-friendly glass baking paint and preparation method thereof | |
| CN104877539A (en) | Metal bonding powder coating with mirror-like silver effect as well as preparation method and application thereof | |
| CN102086345B (en) | High-solid amino alkyd clear baking varnish, and preparation method and use thereof | |
| CN103113543A (en) | N-butyl alcohol mixing etherified melamine resin | |
| CN102863849A (en) | IR (infrared) purple ink | |
| CN103937397B (en) | A kind of dermatoglyph powder coating | |
| CN102786846B (en) | Acrylic acid modified nitro anti-corrosion lacquer and preparation method thereof | |
| CN103305103A (en) | Pure polyester powder coating with good storage stability and preparation method thereof | |
| CN107603373B (en) | electrosilvering paint and preparation method thereof | |
| CN102863843A (en) | Hone-finished transparent white ink | |
| CN105153917A (en) | Valve antifouling powdery paint with good film-forming toughness and manufacture method thereof | |
| CN102876123A (en) | Shiny silver printing ink | |
| CN102344742A (en) | Novel environment-friendly enamel for metal handicrafts | |
| CN102863844A (en) | Matte grey printing ink | |
| CN102863837A (en) | Piano black printing ink |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20211121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |