CN101805556A - Thermosetting powder coating with high tenacity - Google Patents
Thermosetting powder coating with high tenacity Download PDFInfo
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- CN101805556A CN101805556A CN201010145933A CN201010145933A CN101805556A CN 101805556 A CN101805556 A CN 101805556A CN 201010145933 A CN201010145933 A CN 201010145933A CN 201010145933 A CN201010145933 A CN 201010145933A CN 101805556 A CN101805556 A CN 101805556A
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Abstract
The invention relates to a thermosetting powder coating with high tenacity, which mainly comprises the following components in parts by weight: 340-360 parts of proper flexible polyester resin, 220-240 parts of epoxy resin, 340-420 parts of pigment, 8-12 parts of flatting agent (active component is 100% ), 3-6 parts of benzoin, 7-12 parts of wetting dispersant and 5-10 parts of toughening assistant. The invention has the characteristics of high tenacity, strong adhesive force and the like, overcomes the defects of brittleness of the whole coating and reduction of mechanical properties caused by coating the powder coating on an electrophoresis substrate; and compared with the common formula, the cost is reduced by about 15%.
Description
Technical field:
The present invention relates to a kind of thermosetting powder coating(s), relate in particular to the thermosetting powder coating with high tenacity that is used for the electrophoresis substrate coating.
Background technology:
Thermosetting powder coating(s) in the market can only just can reach the requirement of toughness and sticking power to the single application in metallic surface.When the electrophoretic surface application, because the difference of the toughness of two coating films and sticking power causes comprehensive mechanical performance to descend.
And in actual production, because a large amount of uses of alumina, the static thermosetting powder coating(s) sprays after also changing first electrophoresis into by original single static powder thermosetting application on the technology, the appearance of compound coating makes the toughness of whole coating become very fragile, workman's tractive is proofreaied and correct and is made the explosion of filming when directly causing assembling, and influences the qualification rate of production schedule and product.
Particularly when being used for refrigeration equipment two device external coatings,, can pass through workman's tractive owing to need the shaping welding, when amplitude is excessive whole coating can be from explosion on vaporizer or the prolong, peel off, thereby cause a large amount of defective productss, increased production cost, the wasting of resources; In addition, evaporator of refrigerator changes iron alloy or aluminium into by the copper material of past employing at present, and to its adhesive force of coatings, snappiness and salt-fog test etc. is had higher requirement.
Regulation among the GB/T23133-2008 " domestic refrigerator vaporizer ", the vaporizer coat-thickness is not less than 0.02mm, and under 〉=50cm highly impacted, the vaporizer coating did not have cracking, peeling phenomenon.GB/T23134-2008 domestic refrigerator condenser " then stipulate, threaded pipe type condenser adopts the coat-thickness of cathode electrodip painting to should be 18～28 μ m, adopt the coat-thickness of electrostatic spraying to should be 50～350 μ m, the coat-thickness of tube-sheet cooler condenser should be 18～28 μ m.
Patent of invention 200910184341,03136583 disclosed thermosetting powder coating(s) is when being used for the electrophoretic surface application, its toughness and sticking power are all not good enough, and complicated component, cost are higher, so a kind of thermosetting powder coating with high tenacity that is used for the electrophoresis substrate coating of market in urgent need.
Summary of the invention:
The object of the present invention is to provide a kind of thermosetting powder coating with high tenacity and preparation method thereof, by resin and an amount of auxiliary agent of interpolation of selecting suitable acid number for use, reduce the second-order transition temperature of coating, improve the snappiness of coating, thereby solve the defective of the powder coating full coat layer embrittlement that application causes on the electrophoresis ground, mechanical property decline.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of thermosetting powder coating with high tenacity is characterized by and mainly comprises following parts by weight:
340～360 parts of suitable snappiness polyester resins
220～240 parts of Resins, epoxy
340～420 parts of color stuffings
8～12 parts of flow agents (100% effective ingredient)
3～6 parts of st-yraxes
7～12 parts of wetting dispersing agents;
Described suitable snappiness polyester resin has following physicochemical property:
Outward appearance black or brown granular
Viscosity (200 ℃ of rotary viscosity CP) 1500-3000
Softening temperature (ring and ball method) ℃ 102-106
Acid number (mgKOH/g) 50-54
Second-order transition temperature (℃) 48～52;
Described Resins, epoxy is mainly the E-12 type;
Described wetting dispersing agent mainly comprises 701;
Described a kind of thermosetting powder coating with high tenacity can also increase toughening auxiliary agent, 5～10 parts by weight;
Described toughening auxiliary agent mainly comprises SK2.
A kind of preparation method of thermosetting powder coating with high tenacity is identical with existing powder coating production technique.
The invention has the beneficial effects as follows:
A kind of thermosetting powder coating with high tenacity provided by the invention has characteristics such as high-tenacity, strong adhesive force, solves the defective of the powder coating full coat layer embrittlement that application causes on the electrophoresis ground, mechanical property decline.Detailed detect parameters such as following table:
| Mechanical property | Common thermosetting powder coating(s) | A kind of thermosetting powder coating with high tenacity |
| Shock strength (positive and negative) | The square impact 50Kg.cm 30Kg.cm that recoils | The square impact 50Kg.cm 50Kg.cm that recoils |
| Pencil hardness | ??HB-1H | ??HB-1H |
| Gloss (60 °) 〉= | ??92％ | ??92％ |
| Crooked (Φ 2mm) | Do not pass through | By |
The cost aspect, because selected for use suitable snappiness polyester resin to replace normal polyester resin, finished product per ton 15% (normal polyester resin is that acid number is about 73, and second-order transition temperature is 50～53 polyester resin) that can cheaply can save production cost.
Embodiment:
Embodiment 1
A kind of thermosetting powder coating with high tenacity prescription:
| Title | Parts by weight |
| Suitable snappiness polyester resin (HW-B 64) | ??350 |
| Title | Parts by weight |
| Resins, epoxy (E-12 type) | ??230 |
| Color stuffing | ??380 |
| Flow agent (100% effective ingredient) | ??10 |
| St-yrax | ??5 |
| Wetting dispersing agent (701) | ??10 |
| Toughening auxiliary agent (SK2) | ??8 |
Film performance:
| Shock strength (positive and negative) | The square impact 50Kg.cm 50Kg.cm that recoils |
| Pencil hardness | ??HB-1H |
| Gloss (60 °) 〉= | ??92％ |
| Crooked (Φ 2mm) | By |
Below be correlation parameter and the Performance Detection testing data that two kinds of regular convention formulas of the prior art add toughening auxiliary agent SK2:
Regular convention formula A (conventional polyester adds SK2)
| Title | Parts by weight |
| Normal polyester resin (AV=74) | ??300 |
| Resins, epoxy (E-12 type) | ??300 |
| Color stuffing | ??380 |
| Flow agent (100% effective ingredient) | ??10 |
| St-yrax | ??5 |
| Wetting dispersing agent (701) | ??10 |
| Title | Parts by weight |
| Toughening auxiliary agent (SK2) | ??8 |
Film performance:
| Shock strength (positive and negative) | The square impact 50Kg.cm 30Kg.cm that recoils |
| Pencil hardness | ??HB-1H |
| Gloss (60 °) 〉= | ??92％ |
| Crooked (Φ 2mm) | Do not pass through |
Regular convention formula B (common low acid number polyester adds SK2)
| Title | Parts by weight |
| Normal polyester resin (AV=54) | ??345 |
| Resins, epoxy (E-12 type) | ??230 |
| Color stuffing | ??380 |
| Flow agent (100% effective ingredient) | ??10 |
| St-yrax | ??5 |
| Wetting dispersing agent (701) | ??10 |
| Toughening auxiliary agent (SK2) | ??8 |
Film performance:
| Shock strength (positive and negative) | The square impact 50Kg.cm 40Kg.cm that recoils |
| Pencil hardness | ??HB-1H |
| Gloss (60 °) 〉= | ??92％ |
| Shock strength (positive and negative) | The square impact 50Kg.cm 40Kg.cm that recoils |
| Crooked (Φ 2mm) | Do not pass through |
Embodiment 2
A kind of thermosetting powder coating with high tenacity does not add the SK2 prescription:
| Title | Parts by weight |
| Suitable snappiness polyester resin (HW-B 64) | ??345 |
| Resins, epoxy (E-12 type) | ??230 |
| Color stuffing | ??380 |
| Flow agent (100% effective ingredient) | ??10 |
| St-yrax | ??5 |
| Wetting dispersing agent (701) | ??10 |
Film performance:
| Shock strength (positive and negative) | The square impact 50Kg.cm 45Kg.cm that recoils |
| Pencil hardness | ??HB-1H |
| Gloss (60 °) 〉= | ??92％ |
| Crooked (Φ 2mm) | By |
Below be correlation parameter and the Performance Detection testing data that regular convention formula of the prior art does not add toughening auxiliary agent SK2:
Regular convention formula (common low acid number polyester does not add toughening auxiliary agent SK2)
| Title | Parts by weight |
| Vibrin AV=54 | ??345 |
| Resins, epoxy (E-12 type) | ??230 |
| Color stuffing | ??380 |
| Flow agent (100% effective ingredient) | ??10 |
| St-yrax | ??5 |
| Wetting dispersing agent (701) | ??10 |
Film performance:
| Shock strength (positive and negative) | The square impact 50Kg.cm 35Kg.cm that recoils |
| Pencil hardness | ??HB-1H |
| Gloss (60 °) 〉= | ??92％ |
| Crooked (Φ 2mm) | Do not pass through |
Claims (6)
1. thermosetting powder coating with high tenacity is characterized by and mainly comprises following parts by weight:
340～360 parts of suitable snappiness polyester resins;
220～240 parts of Resins, epoxy;
340～420 parts of color stuffings;
8～12 parts of flow agents (100% effective ingredient);
3～6 parts of st-yraxes;
7～12 parts of wetting dispersing agents.
2. a kind of thermosetting powder coating with high tenacity according to claim 1 is characterized by: suitable snappiness polyester resin has following physicochemical property:
Outward appearance black or brown granular;
Viscosity (200 ℃ of rotary viscosity CP) 1500-3000;
Softening temperature (ring and ball method) ℃ 102-106;
Acid number (mgKOH/g) 50-54;
Second-order transition temperature (℃) 48～52.
3. a kind of thermosetting powder coating with high tenacity according to claim 1 is characterized by: Resins, epoxy is mainly the E-12 type.
4. a kind of thermosetting powder coating with high tenacity according to claim 1 is characterized in that: described wetting dispersing agent mainly comprises 701.
5. a kind of thermosetting powder coating with high tenacity according to claim 1 is characterized in that: can also increase toughening auxiliary agent, 5～10 parts by weight.
6. a kind of thermosetting powder coating with high tenacity according to claim 5 is characterized in that: toughening auxiliary agent mainly comprises SK2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010145933A CN101805556A (en) | 2010-04-12 | 2010-04-12 | Thermosetting powder coating with high tenacity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010145933A CN101805556A (en) | 2010-04-12 | 2010-04-12 | Thermosetting powder coating with high tenacity |
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| CN101805556A true CN101805556A (en) | 2010-08-18 |
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| CN201010145933A Pending CN101805556A (en) | 2010-04-12 | 2010-04-12 | Thermosetting powder coating with high tenacity |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786866A (en) * | 2011-05-19 | 2012-11-21 | 安徽华辉塑业科技有限公司 | Metal door dedicated thin-coating thermosetting powder coating |
| CN103160195A (en) * | 2013-02-22 | 2013-06-19 | 安徽华辉塑业科技有限公司 | Low temperature solidified type epoxy/ polyester powder coating |
| CN103265874A (en) * | 2013-05-23 | 2013-08-28 | 浙江超浪新材料有限公司 | High-toughness powder coating specially used for security door |
| CN103497639A (en) * | 2013-09-24 | 2014-01-08 | 安徽锐视光电技术有限公司 | High-toughness high-leveling powder coating |
| CN105694673A (en) * | 2016-03-24 | 2016-06-22 | 安徽圣德建材科技有限公司 | High-toughness high-strength antirust powder paint |
| CN106675347A (en) * | 2016-12-30 | 2017-05-17 | 安徽美佳新材料股份有限公司 | Powder coating for roll-bond evaporator and preparation method of powder coating |
| CN108727949A (en) * | 2018-05-10 | 2018-11-02 | 诸城市福日机械有限公司 | A kind of electrophoretic paint of frame coating |
| CN110746865A (en) * | 2019-10-30 | 2020-02-04 | 广州擎天材料科技有限公司 | Powder coating capable of forming high-toughness coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1506423A (en) * | 2002-12-06 | 2004-06-23 | 中国科学院理化技术研究所 | White thermosetting epoxy polyester powder panit capable of forming thin coating and its prepn process |
| CN101016434A (en) * | 2007-02-13 | 2007-08-15 | 湖南至诚涂料有限公司 | Ultraviolet light ultra-low-temperature solidity powder coating |
| CN101020801A (en) * | 2007-03-06 | 2007-08-22 | 徐州正菱涂装有限公司 | Fireproof anticorrosive powder coating for thin steel structure and its prepn |
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2010
- 2010-04-12 CN CN201010145933A patent/CN101805556A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1506423A (en) * | 2002-12-06 | 2004-06-23 | 中国科学院理化技术研究所 | White thermosetting epoxy polyester powder panit capable of forming thin coating and its prepn process |
| CN101016434A (en) * | 2007-02-13 | 2007-08-15 | 湖南至诚涂料有限公司 | Ultraviolet light ultra-low-temperature solidity powder coating |
| CN101020801A (en) * | 2007-03-06 | 2007-08-22 | 徐州正菱涂装有限公司 | Fireproof anticorrosive powder coating for thin steel structure and its prepn |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786866A (en) * | 2011-05-19 | 2012-11-21 | 安徽华辉塑业科技有限公司 | Metal door dedicated thin-coating thermosetting powder coating |
| CN103160195A (en) * | 2013-02-22 | 2013-06-19 | 安徽华辉塑业科技有限公司 | Low temperature solidified type epoxy/ polyester powder coating |
| CN103160195B (en) * | 2013-02-22 | 2016-06-29 | 安徽华辉塑业科技股份有限公司 | Low temperature curing type epoxy/polyester powdery paints |
| CN103265874A (en) * | 2013-05-23 | 2013-08-28 | 浙江超浪新材料有限公司 | High-toughness powder coating specially used for security door |
| CN103265874B (en) * | 2013-05-23 | 2014-07-16 | 浙江超浪新材料有限公司 | High-toughness powder coating specially used for security door |
| CN103497639A (en) * | 2013-09-24 | 2014-01-08 | 安徽锐视光电技术有限公司 | High-toughness high-leveling powder coating |
| CN105694673A (en) * | 2016-03-24 | 2016-06-22 | 安徽圣德建材科技有限公司 | High-toughness high-strength antirust powder paint |
| CN106675347A (en) * | 2016-12-30 | 2017-05-17 | 安徽美佳新材料股份有限公司 | Powder coating for roll-bond evaporator and preparation method of powder coating |
| CN108727949A (en) * | 2018-05-10 | 2018-11-02 | 诸城市福日机械有限公司 | A kind of electrophoretic paint of frame coating |
| CN110746865A (en) * | 2019-10-30 | 2020-02-04 | 广州擎天材料科技有限公司 | Powder coating capable of forming high-toughness coating |
| CN110746865B (en) * | 2019-10-30 | 2021-06-29 | 擎天材料科技有限公司 | Powder coating capable of forming high-toughness coating |
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Application publication date: 20100818 |