CN104877497A - Low-optical-transparency powder paint and preparation method thereof - Google Patents
Low-optical-transparency powder paint and preparation method thereof Download PDFInfo
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- CN104877497A CN104877497A CN201510248814.1A CN201510248814A CN104877497A CN 104877497 A CN104877497 A CN 104877497A CN 201510248814 A CN201510248814 A CN 201510248814A CN 104877497 A CN104877497 A CN 104877497A
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- transparent powder
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Abstract
The invention relates to a powder paint, particularly a low-optical-transparency powder paint and a preparation method thereof. The low-optical-transparency powder paint is prepared by carrying out dry mixing on a GMA acrylic acid transparent powder paint and a polyester transparent powder paint in a mass ratio of 1:1. The acrylic acid transparent powder paint is prepared from the following raw materials in percentage by weight: 77.5-78.2% of acrylic resin, 19-20% of curing agent, 0.7-1% of leveling agent, 0.8-1% of defoaming agent and 0.8-1% of antioxidant. The polyester transparent powder paint is prepared from the following raw materials in percentage by weight: 85-87% of polyester resin, 6.3-6.6% of curing agent B, 1-2% of catalyst, 1-2% of leveling agent, 1.4-2% of defoaming agent and 2-4% of special-type assistant. By adopting the transparent powder paints in two different reaction speed systems, the cured low-optical-transparency powder paint forms a coated film with microscopic coarse structure to greatly lower the surface gloss of the coating, so that the 60-degree gloss can reach 10 below. The preparation method is simple and easy to implement.
Description
Technical field
The present invention relates to a kind of powder coating, be specifically related to a kind of low light transparent powder paint and preparation method thereof.
Background technology
Transparent powder paint is a series of high-grade powder coating designed for application requiring such as the automobile-used high-decoration such as automobile, motorcycle, power truck, high-weatherabilities, has the fresh degree of reflecting of high color, excellent feel and scoring resistance.
In many Application Areass, low light product because having the texture of splendid soft elegance, for low light product wins the larger market share.But see with regard to present circumstances, this technology all also exists certain shortcomings and limitations in quality and application, thus limits their application, be therefore the difficult problem that whole coating industry faces for the improvement of these technology and maturing.
Transparent powder paint mainly contains propenoic acid resin series, polyester series resin.Its coating transparent of Acrylic transparent powder paint is good, and cross-linking density is high, has excellent weather resistance, and properties of coating is good.But because of its produce and coating process requirement high, raw materials cost and manufacturing cost high, thus make it apply and promote to be subject to larger restriction.Polyester transparent powder coating is generally base-material with vibrin, be that solidifying agent is prepared from TGIC (isocyanuric acid three-glycidyl ester) or closure isocyanic ester, better compatible with existing powder coating kind, raw materials cost and production cost lower, but the characteristic high relative to acrylic resin refraction coefficient due to polyester transparent powder coating and feature, slightly poor by the transparency of its obtained transparent powder paint film, and due to TGIC solidification polyester transparent polyester resin for powder coating require there is higher second-order transition temperature (Tg) and melt viscosity, thus have impact on the flow leveling of transparent coating.
Summary of the invention
The object of this invention is to provide a kind of low light transparent powder paint, glossiness is less than 10, has the texture of splendid soft elegance, not only has high-decoration and excellent physical and mechanical property, and there is more comprehensive chemical proofing, not easily xanthochromia, weathering resistance and photostabilization are outstanding; The present invention provides its preparation method simultaneously.
Low light transparent powder paint of the present invention carries out being dry mixed obtained according to the mass ratio of 1:1 by GMA type Acrylic transparent powder paint and polyester transparent system powder coating; Wherein,
GMA type Acrylic transparent powder paint is made up of the raw material of following weight percentage:
Polyester transparent powder coating is made up of the raw material of following weight percentage:
Wherein, described acrylic resin is esters of acrylic acid, methyl acrylic ester is main body, is aided with functional propylene class and other vinyl monomer classes, by resin formed by copolymerization, preferred Degussa acrylic resin LP64/12N, Shanghai Kai Yin Chemical Co., Ltd. provides.
Described solidifying agent A is dodecanedioic acid, preferably ring Yao chemical industry (Shanghai) limited liability company product.
Described flow agent is transparent powder high-performance solid flow agent, and preferred 486CFL, Jinan Rui Chuan Chemical Industry Science Co., Ltd provides.
The powder coating additive of described defoamer to be acrylate copolymer be main body, preferred st-yrax, Yangzhou Rieter resin company limited provides.
Described oxidation inhibitor preferably 1076, chemical name is β-positive octadecanol ester of (3,5-di-tert-butyl-hydroxy phenyl) propionic acid, and the extensive chemical industry in Henan provides.
Described vibrin is saturated polyester resin, and preferred P9336TG, Zhongfa Chemistry Co., Ltd., Hangzhou provides.
Described solidifying agent B is isocyanuric acid three-glycidyl ester TGIC, and preferred Wuxi City two creates trade Co., Ltd's product.
Described catalyzer is dibutyltin dilaurate.
Described special addition agent is powder silane coupling agent, can improve the pencil hardness of coating, anti-zonedly injures wear resisting property, preferred W-6670, and Suzhou Pa Tena Chemical Co., Ltd. provides.
Transparent powder of the present invention is similar with the production method of other powder coating, needs through following operation: batching → pre-mixing → melt extrude → compressing tablet → pulverizing → screening → spraying.In addition, transparent powder paint contamination resistance is poor, and for avoiding occurring shrinkage cavity, the defect such as variegated, in whole production process, technique Charge Mixture Control is strict especially.The preparation method of described low light transparent powder paint, specifically comprise the following steps: GMA type Acrylic transparent powder paint and polyester transparent system powder coating are prepared burden according to formula ratio respectively, be dry mixed according to the mass ratio of 1:1 again, through pre-mixing, melt extrude, compressing tablet, pulverizing, screening obtain.
Adopt electric drying oven with forced convection heating during the powder coating solidification prepared, solidification value is 180-200 DEG C, and set time is 10-15min.
Beneficial effect of the present invention is as follows:
The present invention adopts the transparent powder paint of two kinds of differential responses speed systems, after being dry mixed, forming the film with micro-rough structure, can reduce coatingsurface gloss largely: 60 ° of gloss can reach less than 10 when solidifying according to same ratio.Film antifouling property is good, and most of performances such as hardness, sharpness and the transparency are suitable with GMA type Acrylic transparent powder paint.Taken into account the advantage of epoxy coating and acrylic coating simultaneously, both acrylic system transparent powder paint raw materials cost and the high drawback of manufacturing cost can have been overcome, the problem such as can solve again the polyester system transparent powder paint transparency and levelling property is not good, be well worth doing in various metal objects application aspect, as the Lacquer finish on the surfaces such as automobile, metal products, instrument.Powder coating of the present invention has good protective value and decorate properties; Preparation method of the present invention is simple, is easy to realize.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
The all raw materials used in embodiment, except specified otherwise, are commercially available prod.
Embodiment 1
Low light transparent powder paint described in the present embodiment, carries out being dry mixed obtained by GMA type Acrylic transparent powder paint and polyester transparent system powder coating according to the mass ratio of 1:1; Wherein:
GMA type Acrylic transparent powder paint, be made up of the raw material of following weight percentage:
Polyester transparent powder coating, be made up of the raw material of following weight percentage:
Its preparation method is: GMA type Acrylic transparent powder paint and polyester transparent system powder coating are prepared burden according to formula ratio respectively, then be dry mixed according to the mass ratio of 1:1, through pre-mixing, melt extrude, compressing tablet, pulverizing, screening obtain.Sprayed by the powder coating obtained, solidification obtains film.
Adopt electric drying oven with forced convection heating during the low light transparent powder paint solidification that the present embodiment prepares, solidification value is 190 DEG C, and set time is 13min.
After solidification, the performance test results of gained film is as follows:
| Sequence number | Performance | The method of inspection | Assay |
| 1 | Condition of surface | Visual | Fine and smooth smooth, without tangerine peel |
| 2 | Coat-thickness, μm | Film thickness gauge | 90 |
| 3 | 60 ° of gloss | GB/T9754-18 | 7 |
| 4 | Pencil hardness H | GB/T6739-86 | 2H |
| 5 | Draw lattice sticking power | GB/T9286-88 | 100/100 |
| 6 | Shock resistance cm | GB/T1732-93 | 50 (forward impact) |
Embodiment 2
Low light transparent powder paint described in the present embodiment, carries out being dry mixed obtained by GMA type Acrylic transparent powder paint and polyester transparent system powder coating according to the mass ratio of 1:1; Wherein:
GMA type Acrylic transparent powder paint, be made up of the raw material of following weight percentage:
Polyester transparent powder coating, be made up of the raw material of following weight percentage:
Its preparation method is: GMA type Acrylic transparent powder paint and polyester transparent system powder coating are prepared burden according to formula ratio respectively, then be dry mixed according to the mass ratio of 1:1, through pre-mixing, melt extrude, compressing tablet, pulverizing, screening obtain.Sprayed by the powder coating obtained, solidification obtains film.
Adopt electric drying oven with forced convection heating during the low light transparent powder paint solidification that the present embodiment prepares, solidification value is 180 DEG C, and set time is 15min.
After solidification, the performance test results of gained film is as follows:
| Sequence number | Performance | The method of inspection | Assay |
| 1 | Condition of surface | Visual | Fine and smooth smooth, without tangerine peel |
| 2 | Coat-thickness, μm | Film thickness gauge | 90 |
| 3 | 60 ° of gloss | GB/T9754-18 | 8 |
| 4 | Pencil hardness H | GB/T6739-86 | 2H |
| 5 | Draw lattice sticking power | GB/T9286-88 | 100/100 |
| 6 | Shock resistance cm | GB/T1732-93 | 50 (forward impact) |
Embodiment 3
Low light transparent powder paint described in the present embodiment, carries out being dry mixed obtained by GMA type Acrylic transparent powder paint and polyester transparent system powder coating according to the mass ratio of 1:1; Wherein:
GMA type Acrylic transparent powder paint, be made up of the raw material of following weight percentage:
Polyester transparent powder coating, be made up of the raw material of following weight percentage:
Its preparation method is: GMA type Acrylic transparent powder paint and polyester transparent system powder coating are prepared burden according to formula ratio respectively, then be dry mixed according to the mass ratio of 1:1, through pre-mixing, melt extrude, compressing tablet, pulverizing, screening obtain.Sprayed by the powder coating obtained, solidification obtains film.
Adopt electric drying oven with forced convection heating during the low light transparent powder paint solidification that the present embodiment prepares, solidification value is 200 DEG C, and set time is 10min.
After solidification, the performance test results of gained film is as follows:
| Sequence number | Performance | The method of inspection | Assay |
| 1 | Condition of surface | Visual | Fine and smooth smooth, without tangerine peel |
| 2 | Coat-thickness, μm | Film thickness gauge | 90 |
| 3 | 60 ° of gloss | GB/T9754-18 | 10 |
| 4 | Pencil hardness H | GB/T6739-86 | 2H |
| 5 | Draw lattice sticking power | GB/T9286-88 | 100/100 |
| 6 | Shock resistance cm | GB/T1732-93 | 50 (forward impact) |
Claims (10)
1. a low light transparent powder paint, is characterized in that: carry out being dry mixed obtained according to the mass ratio of 1:1 by GMA type Acrylic transparent powder paint and polyester transparent system powder coating; Wherein,
GMA type Acrylic transparent powder paint is made up of the raw material of following weight percentage:
Polyester transparent powder coating is made up of the raw material of following weight percentage:
2. low light transparent powder paint according to claim 1, is characterized in that: acrylic resin is esters of acrylic acid, methyl acrylic ester is main body, is aided with functional propylene class and vinyl monomer class, by resin formed by copolymerization.
3. low light transparent powder paint according to claim 1, is characterized in that: solidifying agent A is dodecanedioic acid, and solidifying agent B is isocyanuric acid three-glycidyl ester.
4. low light transparent powder paint according to claim 1, is characterized in that: flow agent is transparent powder high-performance solid flow agent 486CFL.
5. low light transparent powder paint according to claim 1, is characterized in that: defoamer is st-yrax.
6. low light transparent powder paint according to claim 1, is characterized in that: oxidation inhibitor is β-positive octadecanol ester of (3,5-di-tert-butyl-hydroxy phenyl) propionic acid.
7. low light transparent powder paint according to claim 1, is characterized in that: catalyzer is dibutyltin dilaurate.
8. low light transparent powder paint according to claim 1, is characterized in that: special addition agent is powder silane coupling agent W-6670.
9. low light transparent powder paint according to claim 1, is characterized in that: during powder coating solidification, and solidification value is 180-200 DEG C, and set time is 10-15min.
10. the preparation method of the arbitrary described low light transparent powder paint of claim 1-9, it is characterized in that comprising the following steps: GMA type Acrylic transparent powder paint and polyester transparent system powder coating are prepared burden according to formula ratio respectively, be dry mixed according to the mass ratio of 1:1 again, through pre-mixing, melt extrude, compressing tablet, pulverizing, screening obtain.
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| CN201510248814.1A CN104877497A (en) | 2015-05-15 | 2015-05-15 | Low-optical-transparency powder paint and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107987639A (en) * | 2017-12-19 | 2018-05-04 | 衢州量智科技有限公司 | High-weatherability auto shield powdery paints and preparation method thereof |
| CN110582547A (en) * | 2017-05-05 | 2019-12-17 | 老虎干漆美国有限公司 | Low gloss mixed powder coatings |
| CN112831258A (en) * | 2021-03-04 | 2021-05-25 | 四川和乐门业有限公司 | Environment-friendly hot-press-resistant transparent finishing powder and preparation method thereof |
-
2015
- 2015-05-15 CN CN201510248814.1A patent/CN104877497A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110582547A (en) * | 2017-05-05 | 2019-12-17 | 老虎干漆美国有限公司 | Low gloss mixed powder coatings |
| CN110582547B (en) * | 2017-05-05 | 2021-08-17 | 老虎干漆美国有限公司 | Low gloss mixed powder coatings |
| CN107987639A (en) * | 2017-12-19 | 2018-05-04 | 衢州量智科技有限公司 | High-weatherability auto shield powdery paints and preparation method thereof |
| CN112831258A (en) * | 2021-03-04 | 2021-05-25 | 四川和乐门业有限公司 | Environment-friendly hot-press-resistant transparent finishing powder and preparation method thereof |
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