CN104946078A - Nano ceramic-modified epoxy resin type powder coating and preparation method thereof - Google Patents
Nano ceramic-modified epoxy resin type powder coating and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a nano ceramic-modified epoxy resin type powder coating and a preparation method thereof, and relates to the technical field of production of powder coatings. The powder coating is prepared from the following raw materials in parts by mass: 100-110 parts of epoxy resin, 16-20 parts of nano ceramic powder, 10-13 parts of kaolin, 8-10 parts of asbestos powder, 6-9 parts of sodium carboxymethylcellulose, 5-8 parts of ethylene glycol bis trimellitic anhydride ester, 3-5 parts of superfine transparent iron oxide yellow, 2-4 parts of polyether-modified organic siloxane, 2-3 parts of dithiocarbamate, 1-3 parts of dibutyl phthalate, 35-40 parts of xylene and 40-50 parts of ethyl alcohol. The coating prepared from the preparation method is nontoxic and free of solvents and volatile and toxic substances, and meets environmental requirements; the raw material utilization ratio is high, and over-sprayed powder can be recycled; a compact coating layer is generated after spraying, and the coating layer is good in adhesive force and impact resistance, and excellent in weather resistance and corrosion resistance.
Description
Technical field:
The present invention relates to powder coating production technical field, be specifically related to a kind of nano ceramics modified epoxy type powder coating and preparation method thereof.
Background technology:
Powder coating is a kind of novel not containing solvent 100% solid powdery coating.There is solvent-free, pollution-free, recyclable, environmental protection, the saving energy and resource, reduce labor intensity and film physical strength high, be mainly divided into thermoplastic powder coating and the large class of thermosetting powder coating(s) two.Heat curable powder coating refers to using thermosetting resin as filmogen, and the solidifying agent having added crosslinking reaction can form insoluble not molten quality hard coat after heating.Temperature again this coating high also can not be softening as thermoplastic coating, and can only decompose.The resin adopted due to thermosetting powder coating(s) is the prepolymer that the polymerization degree is lower, molecular weight is lower, so the levelling property of coating is better, have ornamental preferably, and low-molecular-weight prepolymer is after solidification, can form the macromole of cross-linked network, thus coating has better preservative property and mechanical property.Therefore thermosetting powder coating(s) development is particularly rapid.Wherein, Epoxy-resin-type powder paint is excellent in metlbond power, non-corrosibility, hardness, snappiness and shock strength owing to having, and therefore becomes the kind first applied in thermosetting powder coating(s).
Due to the existence of aromatic oxide group in epoxy coating, to ultraviolet and allergy thereof, so that weathering resistance is not high, and in baking or solar radiation process, easily yellowing, efflorescence, affect glossiness, ornamental extreme difference.In addition, due to its special construction, general set time is longer, reaches 15-20 minute, although partial coating can solidify under the condition of 160 DEG C, 15 minutes, decorative effect is poor, the technical requirements do not reach protection, hiding.
Summary of the invention:
Technical problem to be solved by this invention is to provide nano ceramics modified epoxy type powder coating that a kind of raw material is easy to get, input cost is low and preparation method thereof.
Technical problem to be solved by this invention adopts following technical scheme to realize:
A kind of nano ceramics modified epoxy type powder coating, be made up of the raw material of following mass fraction:
Epoxy resin 100-110 part, nano-ceramic powder 16-20 part, kaolin 10-13 part, asbestos powder 8-10 part, Xylo-Mucine 6-9 part, ethylene glycol bis trimellitic anhydride ester 5-8 part, ultra-fine transparent yellow iron oxide 3-5 part, organic silicon modified by polyether oxygen alkane 2-4 part, dithiocarbamate 2-3 part, dibutyl phthalate 1-3 part, dimethylbenzene 35-40 part, ethanol 40-50 part.
The particle diameter of described nano-ceramic powder is 30-50 nanometer.
The preparation method of described ultra-fine transparent yellow iron oxide first gets liquor ferri trichloridi and sodium hydroxide solution to react the obtained ironic hydroxide water-sol at 60-65 DEG C, then add sodium laurylsulfonate and carry out surface treatment, chloroform extraction is used after being cooled to room temperature, get subnatant in 150-155 DEG C of oven dry, finally grind and get final product.
A preparation method for nano ceramics modified epoxy type powder coating, comprises the following steps:
(1) first epoxy resin is dissolved in the mixed solvent of ethanol and dimethylbenzene, add nano-ceramic powder again, mixture is supersound process 10-15min under ultrasonic frequency 22kHz, power 100-200W first, then microwave treatment 5-10min under microwave frequency 2450MHz, power 300-400W, obtains material I;
(2) kaolin, asbestos powder and ultra-fine transparent yellow iron oxide are joined in ball mill, after ball milling 10-15min, add material I again, be milled to granularity and be less than 20 μm, then in 70-80 DEG C of oven dry, obtain material II;
(3) material II, Xylo-Mucine, ethylene glycol bis trimellitic anhydride ester, organic silicon modified by polyether oxygen alkane, dithiocarbamate and dibutyl phthalate are joined in high-speed mixer, be warming up to 90-100 DEG C, after insulation 20-30min, material is added in screw extrusion press and melt extrude, the material extruded is slit into sheet through cooling press truncation, be ground into through pulverizing mill the powder that particle diameter is 20-35 μm again, finally carry out metering packing.
The invention has the beneficial effects as follows:
(1) this coating is not containing toxicity, not containing solvent and the toxic material of volatilization, meets environmental requirement;
(2) raw material availability is high, and cross the powder recoverable of spray, utilization ratio reaches as high as 99%;
(3) disposable spray finishing, can obtain the film of adequate thickness without the need to primary coat, production efficiency is high;
(4) form the coating of one deck densification after spraying, sticking power, good impact resistance, and there is excellent weathering resistance, erosion resistance;
(5) adopt bag type package, storage, transportation safety are conveniently.
Embodiment:
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
Embodiment 1
A kind of nano ceramics modified epoxy type powder coating, be made up of the raw material of following mass fraction:
Epoxy resin 100 parts, nano-ceramic powder 16 parts, kaolin 10 parts, asbestos powder 8 parts, Xylo-Mucine 6 parts, ethylene glycol bis trimellitic anhydride ester 5 parts, ultra-fine transparent yellow iron oxide 3 parts, 2 parts, organic silicon modified by polyether oxygen alkane, dithiocarbamate 2 parts, dibutyl phthalate 1 part, dimethylbenzene 35 parts, ethanol 40 parts.
Wherein, the preparation method of ultra-fine transparent yellow iron oxide first gets liquor ferri trichloridi and sodium hydroxide solution to react the obtained ironic hydroxide water-sol at 60-65 DEG C, then add sodium laurylsulfonate and carry out surface treatment, chloroform extraction is used after being cooled to room temperature, get subnatant in 150-155 DEG C of oven dry, finally grind and get final product.
Carry out the preparation of nano ceramics modified epoxy type powder coating according to above-mentioned raw materials formula, comprise the following steps:
(1) first epoxy resin is dissolved in the mixed solvent of ethanol and dimethylbenzene, add the nano-ceramic powder of 30-50 nanometer again, mixture is supersound process 15min under ultrasonic frequency 22kHz, power 100W first, then microwave treatment 10min under microwave frequency 2450MHz, power 300W, obtains material I;
(2) kaolin, asbestos powder and ultra-fine transparent yellow iron oxide are joined in ball mill, after ball milling 10min, add material I again, be milled to granularity and be less than 20 μm, then in 70-80 DEG C of oven dry, obtain material II;
(3) material II, Xylo-Mucine, ethylene glycol bis trimellitic anhydride ester, organic silicon modified by polyether oxygen alkane, dithiocarbamate and dibutyl phthalate are joined in high-speed mixer, be warming up to 90-100 DEG C, after insulation 30min, material is added in screw extrusion press and melt extrude, the material extruded is slit into sheet through cooling press truncation, be ground into through pulverizing mill the powder that particle diameter is 20-35 μm again, finally carry out metering packing.
Embodiment 2
A kind of nano ceramics modified epoxy type powder coating, be made up of the raw material of following mass fraction:
Epoxy resin 105 parts, nano-ceramic powder 18 parts, kaolin 11 parts, asbestos powder 9 parts, Xylo-Mucine 7 parts, ethylene glycol bis trimellitic anhydride ester 6 parts, ultra-fine transparent yellow iron oxide 4 parts, 3 parts, organic silicon modified by polyether oxygen alkane, dithiocarbamate 2 parts, dibutyl phthalate 2 parts, dimethylbenzene 37 parts, ethanol 45 parts.
The preparation method of the present embodiment powder coating is with embodiment 1.
Embodiment 3
A kind of nano ceramics modified epoxy type powder coating, be made up of the raw material of following mass fraction:
Epoxy resin 110 parts, nano-ceramic powder 20 parts, kaolin 13 parts, asbestos powder 10 parts, Xylo-Mucine 9 parts, ethylene glycol bis trimellitic anhydride ester 8 parts, ultra-fine transparent yellow iron oxide 5 parts, 4 parts, organic silicon modified by polyether oxygen alkane, dithiocarbamate 3 parts, dibutyl phthalate 3 parts, dimethylbenzene 40 parts, ethanol 50 parts.
The preparation method of the present embodiment powder coating is with embodiment 1.
On cold-rolled steel sheet after the powder coating obtained by embodiment 1-3 adopts high-pressure electrostatic spray gun to be sprayed on the thick rust cleaning of 0.5mm, oil removing and phosphatization respectively, then at 160 DEG C, 15min is toasted, coat-thickness 60 μm, carry out a series of performance test to coating, result is as shown in table 1:
The performance test results of table 1 embodiment 1-3 coating
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. a nano ceramics modified epoxy type powder coating, is characterized in that, is made up of the raw material of following mass fraction:
Epoxy resin 100-110 part, nano-ceramic powder 16-20 part, kaolin 10-13 part, asbestos powder 8-10 part, Xylo-Mucine 6-9 part, ethylene glycol bis trimellitic anhydride ester 5-8 part, ultra-fine transparent yellow iron oxide 3-5 part, organic silicon modified by polyether oxygen alkane 2-4 part, dithiocarbamate 2-3 part, dibutyl phthalate 1-3 part, dimethylbenzene 35-40 part, ethanol 40-50 part.
2. nano ceramics modified epoxy type powder coating according to claim 1, is characterized in that: the particle diameter of described nano-ceramic powder is 30-50 nanometer.
3. nano ceramics modified epoxy type powder coating according to claim 1, it is characterized in that: the preparation method of described ultra-fine transparent yellow iron oxide first gets liquor ferri trichloridi and sodium hydroxide solution to react the obtained ironic hydroxide water-sol at 60-65 DEG C, then add sodium laurylsulfonate and carry out surface treatment, chloroform extraction is used after being cooled to room temperature, get subnatant in 150-155 DEG C of oven dry, finally grind and get final product.
4. a preparation method for nano ceramics modified epoxy type powder coating as claimed in claim 1, is characterized in that, comprise the following steps:
(1) first epoxy resin is dissolved in the mixed solvent of ethanol and dimethylbenzene, add nano-ceramic powder again, mixture is supersound process 10-15min under ultrasonic frequency 22kHz, power 100-200W first, then microwave treatment 5-10min under microwave frequency 2450MHz, power 300-400W, obtains material I;
(2) kaolin, asbestos powder and ultra-fine transparent yellow iron oxide are joined in ball mill, after ball milling 10-15min, add material I again, be milled to granularity and be less than 20 μm, then in 70-80 DEG C of oven dry, obtain material II;
(3) material II, Xylo-Mucine, ethylene glycol bis trimellitic anhydride ester, organic silicon modified by polyether oxygen alkane, dithiocarbamate and dibutyl phthalate are joined in high-speed mixer, be warming up to 90-100 DEG C, after insulation 20-30min, material is added in screw extrusion press and melt extrude, the material extruded is slit into sheet through cooling press truncation, be ground into through pulverizing mill the powder that particle diameter is 20-35 μm again, finally carry out metering packing.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108250856A (en) * | 2018-02-26 | 2018-07-06 | 夏百庆 | A kind of wet-heat resisting fluorocarbon powder paint |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229777A (en) * | 2011-05-17 | 2011-11-02 | 河北工业大学 | Hydrophobic olephobic epoxy paint and its preparation and application method |
| CN102660156A (en) * | 2012-02-10 | 2012-09-12 | 广西南宁绿晶功能高分子材料有限公司 | Yellow reflective heat insulation pigment and paint, and method for preparing yellow reflective heat insulation pigment and paint |
| CN103589273A (en) * | 2012-08-13 | 2014-02-19 | 上海建治防腐科技发展有限公司 | Manufacturing method of metal ceramic anticorrosive paint |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229777A (en) * | 2011-05-17 | 2011-11-02 | 河北工业大学 | Hydrophobic olephobic epoxy paint and its preparation and application method |
| CN102660156A (en) * | 2012-02-10 | 2012-09-12 | 广西南宁绿晶功能高分子材料有限公司 | Yellow reflective heat insulation pigment and paint, and method for preparing yellow reflective heat insulation pigment and paint |
| CN103589273A (en) * | 2012-08-13 | 2014-02-19 | 上海建治防腐科技发展有限公司 | Manufacturing method of metal ceramic anticorrosive paint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108250856A (en) * | 2018-02-26 | 2018-07-06 | 夏百庆 | A kind of wet-heat resisting fluorocarbon powder paint |
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Effective date of registration: 20200529 Address after: 226401 No.60 Jianshe Road, Matang Town, Rudong County, Nantong City, Jiangsu Province Patentee after: Nantong Wanbangcai Coating Co.,Ltd. Address before: Road Industrial Park Venture 233000 Anhui province Bengbu Huai District No. 1 Patentee before: BENGBU SUNLIGHT POWDER PAINT Co.,Ltd. |