CN103555170A - Rapidly-cured powder coating for coiled materials and production method thereof - Google Patents
Rapidly-cured powder coating for coiled materials and production method thereof Download PDFInfo
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- CN103555170A CN103555170A CN201310481119.0A CN201310481119A CN103555170A CN 103555170 A CN103555170 A CN 103555170A CN 201310481119 A CN201310481119 A CN 201310481119A CN 103555170 A CN103555170 A CN 103555170A
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Abstract
The invention discloses a rapidly-cured powder coating for coiled materials. The powder coating contains the following components: by weight, 50-60 parts of hydroxyl resin, 11-14 parts of a curing agent, 1 part of a leveling agent, 1 part of a deblocking agent, 0.4 part of an antifoaming agent and 23.6-36.6 parts of pigment and filler. According to the invention, isocyanate, organo tin and ammonia react with hydroxyl resin with low softening point to obtain the powder coating, wherein organo tin and the deblocking agent of ammonia can be used to reduce deblocking temperature of the closed isocyanate and raise curing speed. As there is no increasing in molecular weight before reaching the deblocking temperature, an excellent leveling effect can be achieved. The powder coating has comprehensive effects as follows: curing speed is raised and the curing time is reduced to 3min from original 30min; baking time is minimized; energy is saved; production cycle is shortened; production cost is reduced; and production efficiency is raised.
Description
Technical field
The present invention relates to a kind of coiled material coating, particularly the production method of powder coating and above-mentioned powder coating for fast setting coiled material.
Background technology
At present, coiled material is paint spraying with coating majority, its shortcoming is that work-ing life is short, need the moulding of 2 ~ 3 spraying ability, paint film easily peels off, aging, thereby there is on the market long service life, can one-time formed powder coating, but powder coating is due to raw-material restriction itself, and often its curing speed is not high, generally needs 180 ~ 200 ℃/30-20min, will increase the production cycle like this, increase cost, and existing coiled material is poor by the bending property of powder coating, sticking power is not high, this also can affect the performance of product.
Summary of the invention
The object of the invention is to provide in order to solve above-mentioned the deficiencies in the prior art a kind of coiled material powder coating that can realize fast setting and strong adhesion, good bending property.
To achieve these goals, the fast setting coiled material powder coating that the present invention is designed, comprise hydroxy resin, solidifying agent, flow agent, deblocking agent, defoamer, pigment and filler, said components is that hydroxy resin is 50 parts ~ 60 parts according to weight proportion part, solidifying agent is 11 parts ~ 14 parts, and flow agent is 1 part, and deblocking agent is 1 part, defoamer is 0.4 part, and pigment and filler are 23.6 parts ~ 36.6 parts.
The hydroxyl value of described hydroxy resin is 45 mg KOH/g ~ 55mg KOH/g, and viscosity is 100 pool ~ 300 pools (165 ℃ of mensuration), and softening temperature is 110 ℃ ~ 115 ℃; Described solidifying agent is isocyanic ester, water white transparency particulate state, and softening temperature is 90 ℃ ~ 110 ℃, and second-order transition temperature is 40 ℃ ~ 65 ℃, and equivalent is 275 g/mol ~ 285g/mol; Described flow agent is esters of acrylic acid, oyster white or light yellow solid particle, and softening temperature is 80 ℃ ~ 105 ℃, solid content >=99%, oxirane value is 0.05 ~ 0.12; Described deblocking agent is organotin and ammonia, and ratio is 6:4, is colourless transparent liquid, and wherein organotin can improve surperficial slickness, and ammonia can be accelerated deblocking speed; Described defoamer is conventional silicone emulsion, belongs to non-polar compound, the silicone antifoam agent that the methyl polysiloxane of take is main body; Described pigment and filler are conventional pigment and filler, and pigment comprises titanium dioxide, ferric oxide or three primary colours mixture; Filler comprises barium sulfate and ground barium sulfate.
Fast setting coiled material powder coating of the present invention, its production method is after first weighing according to weight proportion part according to above-mentioned component, in mixing machine, be uniformly mixed 1 minute ~ 5 minutes, then the material mixing is added in screw extrusion press and is melt extruded, machine cavity temperature is at 88 ~ 92 ℃, extruder temperature is 98 ℃ ~ 102 ℃, then the truncation of extruded material cooling press is slit into sheet, deliver in pulverizer and pulverize again, through cyclonic separation, vibration screening makes granularity at the 200 required powder coating products in order left and right, order ~ 300.At this, the granularity unit " order " of described granularity in 200 order ~ 300 orders left and right is the granularity unit that one's own profession professional and technical personnel knows, and the also special sieve with this “Mu”Wei granularity unit on sale on market, so no further details to be given herein.Adopt electrostatic spraying or electrostatic fluidized bed construction technology to be coated on coiled material with on galvanized sheet this powder coating, recording its curing speed is 230 ℃/3min.
The fast setting coiled material powder coating that the present invention obtains, adopt the hydroxyl resin of isocyanic ester, organotin and ammonia and low softening point interact lower and obtain, wherein the deblocking agent of organotin and ammonia can reduce the deblocking temperature of closure isocyanic ester, improve curing speed, due to before not reaching deblocking temperature without the growth of molecular weight, therefore can reach excellent levelling effect.Simultaneously isocyanic ester is very active, solution be honored as a queen can with hydroxy resin rapid reaction, generate filming of amino-formate bond.Esters of acrylic acid flow agent can reduce the surface tension of coating, makes membranous homogenizing and levelling.Net effect is to have improved curing speed, and drop to 3min from original 30min set time, thereby reduces baking time, saves the energy, shortens the production cycle, reduces production costs, and enhances productivity.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
Embodiment 1:
Fast setting coiled material powder coating provided by the invention, comprise hydroxy resin, solidifying agent, flow agent, deblocking agent, defoamer, pigment and filler, said components is that hydroxy resin is 50 parts according to weight proportion part, solidifying agent is 11 parts, flow agent is 1 part, and deblocking agent is 1 part, and defoamer is 0.4 part, pigment is 1.6 minutes, and filler is 35 parts.The hydroxyl value of described hydroxy resin is 45 mg KOH/g ~ 55mg KOH/g, and softening temperature is 110 ℃ ~ 115 ℃; Solidifying agent is isocyanic ester, and softening temperature is 90 ℃ ~ 110 ℃, and second-order transition temperature is 40 ℃ ~ 65 ℃; Flow agent is esters of acrylic acid, and softening temperature is 80 ℃ ~ 105 ℃, solid content >=99%, and oxirane value is 0.05 ~ 0.12; Deblocking agent is organotin and ammonia, and ratio is 6:4, is colourless transparent liquid; Defoamer is conventional silicone emulsion, the silicone antifoam agent that the methyl polysiloxane of take is main body; Pigment is titanium dioxide; Filler is barium sulfate and ground barium sulfate, and ratio is 1:1.
Fast setting coiled material powder coating of the present invention, its production method is after first weighing according to weight proportion part according to above-mentioned component, in mixing machine, be uniformly mixed 1 minute ~ 5 minutes, then the material mixing is added in screw extrusion press and is melt extruded, machine cavity temperature is at 88 ℃ ~ 92 ℃, extruder temperature is 98 ℃ ~ 102 ℃, then the truncation of extruded material cooling press is slit into sheet, deliver in pulverizer and pulverize again, through cyclonic separation, vibration screening makes granularity at the 200 required powder coating products in order left and right, order ~ 300.
The fast setting coiled material that the present embodiment is obtained adopts electrostatic spraying or electrostatic fluidized bed construction technology to be coated on coiled material with on galvanized sheet with powder coating, record its curing speed and become 230 ℃/3min from 180 ℃ original ~ 200 ℃/30-20min, through national coating quality Supervision Test Center detection, obtain the curved performance of its T in addition good, in resistance to neutral salt spray test, paint film 480h is interior without variable color, without foaming, without other film defect phenomenons; Adopt the shock-resistant assay method of GB/T 1732-1993 paint film, by 1000g weight from 50cm freely fall within scribble this powder coating coiled material with on galvanized sheet, after 4 magnifying glasses observations, paint film flawless wrinkle and the phenomenon such as peel off.
Embodiment 2:
Fast setting coiled material powder coating provided by the invention, its each component is that hydroxy resin is 60 parts according to weight proportion part, and solidifying agent is 14 parts, and flow agent is 1 part, and deblocking agent is 1 part, and defoamer is 0.4 part, and pigment is 0.6 minute, and filler is 23 parts.The hydroxyl value of described hydroxy resin is 45 mg KOH/g ~ 55mg KOH/g, and softening temperature is 110 ℃ ~ 115 ℃; Solidifying agent is isocyanic ester, and softening temperature is 90 ℃ ~ 110 ℃, and second-order transition temperature is 40 ℃ ~ 65 ℃; Flow agent is esters of acrylic acid, and softening temperature is 80 ℃ ~ 105 ℃, solid content >=99%, and oxirane value is 0.05 ~ 0.12; Deblocking agent is organotin and ammonia, and ratio is 6:4, is colourless transparent liquid; Defoamer is conventional silicone emulsion, the silicone antifoam agent that the methyl polysiloxane of take is main body; Pigment is ferric oxide; Filler is barium sulfate and ground barium sulfate, and ratio is 1:1.Production method is as embodiment 1.
The fast setting coiled material that the present embodiment is obtained adopts electrostatic spraying or electrostatic fluidized bed construction technology to be coated on coiled material with on galvanized sheet with powder coating, record its curing speed and become 230 ℃/3min from 180 ℃ original ~ 200 ℃/30-20min, through national coating quality Supervision Test Center detection, obtain the curved performance of its T in addition good, in resistance to neutral salt spray test, paint film 480h is interior without variable color, without foaming, without other film defect phenomenons; Adopt the shock-resistant assay method of GB/T 1732-1993 paint film, by 1000g weight from 50cm freely fall within scribble this powder coating coiled material with on galvanized sheet, after 4 magnifying glasses observations, paint film flawless wrinkle and the phenomenon such as peel off.
Embodiment 3:
Fast setting coiled material powder coating provided by the invention, its each component is that hydroxy resin is 55 parts according to weight proportion part, and solidifying agent is 12 parts, and flow agent is 1 part, and deblocking agent is 1 part, and defoamer is 0.4 part, and pigment is 0.6 minute, and filler is 30 parts.The hydroxyl value of described hydroxy resin is 45 mg KOH/g ~ 55mg KOH/g, and softening temperature is 110 ℃ ~ 115 ℃; Solidifying agent is isocyanic ester, and softening temperature is 90 ℃ ~ 110 ℃, and second-order transition temperature is 40 ℃ ~ 65 ℃; Flow agent is esters of acrylic acid, and softening temperature is 80 ℃ ~ 105 ℃, solid content >=99%, and oxirane value is 0.05 ~ 0.12; Deblocking agent is organotin and ammonia, and ratio is 6:4, is colourless transparent liquid; Defoamer is conventional silicone emulsion, the silicone antifoam agent that the methyl polysiloxane of take is main body; Pigment can, according to user's needs, adopt red, yellow, blue three primary colours to be mixed into required color; Filler comprises barium sulfate and ground barium sulfate, and ratio is 6:4.Production method is as embodiment 1.
The fast setting coiled material that the present embodiment is obtained adopts electrostatic spraying or electrostatic fluidized bed construction technology to be coated on coiled material with on galvanized sheet with powder coating, record its curing speed and become 230 ℃/3min from 180 ℃ original ~ 200 ℃/30-20min, through national coating quality Supervision Test Center detection, obtain the curved performance of its T in addition good, in resistance to neutral salt spray test, paint film 480h is interior without variable color, without foaming, without other film defect phenomenons; Adopt the shock-resistant assay method of GB/T 1732-1993 paint film, by 1000g weight from 50cm freely fall within scribble this powder coating coiled material with on galvanized sheet, after 4 magnifying glasses observations, paint film flawless wrinkle and the phenomenon such as peel off.
Claims (4)
1. a fast setting coiled material powder coating, it is characterized in that it comprises hydroxy resin, solidifying agent, flow agent, deblocking agent, defoamer, pigment and filler, said components is that hydroxy resin is 50 parts ~ 60 parts according to weight proportion part, solidifying agent is 11 parts ~ 14 parts, flow agent is 1 part, deblocking agent is 1 part, and defoamer is 0.4 part, and pigment and filler are 23.6 parts ~ 36.6 parts.
2. fast setting coiled material powder coating according to claim 1, the hydroxyl value that it is characterized in that described hydroxy resin is 45 mg KOH/g ~ 55mg KOH/g, softening temperature is 110 ℃ ~ 115 ℃; Described solidifying agent is isocyanic ester, and its softening temperature is 90 ℃ ~ 110 ℃, and second-order transition temperature is 40 ℃ ~ 65 ℃; Described deblocking agent is organotin and ammonia, and ratio is 6:4.
3. the production method of powder coating for a fast setting coiled material, comprise and adopt fast setting coiled material powder coating as claimed in claim 1, after it is characterized in that first above-mentioned component being weighed according to weight proportion part, in mixing machine, be uniformly mixed 1 minute ~ 5 minutes, then the material mixing is added in screw extrusion press and is melt extruded, then the truncation of extruded material cooling press is slit into sheet, deliver in pulverizer and pulverize again, through cyclonic separation, vibration screening makes granularity at the 200 required powder coating products in order left and right, order ~ 300.
4. the production method of powder coating for fast setting coiled material according to claim 3, while it is characterized in that melt extruding in screw extrusion press, machine cavity temperature is at 88 ℃ ~ 92 ℃, and extruder temperature is 98 ℃ ~ 102 ℃.
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| CN201310481119.0A CN103555170B (en) | 2013-10-15 | 2013-10-15 | Fast setting coiled material powder coating and production method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108902940A (en) * | 2018-06-28 | 2018-11-30 | 燕生（福建）生物工程有限公司 | A kind of instant bird's nest collagen Gly-His-Lys and preparation method thereof |
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| US20040176543A1 (en) * | 2001-09-27 | 2004-09-09 | Asahi Glass Company Limited | Composition for fluororesin powder coating material |
| CN101220243A (en) * | 2007-12-14 | 2008-07-16 | 广州擎天实业有限公司 | Washing-resistant, doodling-resistant powder paint with surface capable of repeatedly erasing, and producing method thereof |
| CN103146286A (en) * | 2012-12-27 | 2013-06-12 | 上海海隆赛能新材料有限公司 | Fast cured epoxy powder coating composition and preparation method thereof |
| CN103205175A (en) * | 2013-04-22 | 2013-07-17 | 扬州三川实业有限公司 | Epoxy powder coating for preventing auto parts from being corroded |
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2013
- 2013-10-15 CN CN201310481119.0A patent/CN103555170B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040176543A1 (en) * | 2001-09-27 | 2004-09-09 | Asahi Glass Company Limited | Composition for fluororesin powder coating material |
| CN101220243A (en) * | 2007-12-14 | 2008-07-16 | 广州擎天实业有限公司 | Washing-resistant, doodling-resistant powder paint with surface capable of repeatedly erasing, and producing method thereof |
| CN103146286A (en) * | 2012-12-27 | 2013-06-12 | 上海海隆赛能新材料有限公司 | Fast cured epoxy powder coating composition and preparation method thereof |
| CN103205175A (en) * | 2013-04-22 | 2013-07-17 | 扬州三川实业有限公司 | Epoxy powder coating for preventing auto parts from being corroded |
Non-Patent Citations (1)
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| 张春华等: "封端异氰酸酯研究进展", 《化工新型材料》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108902940A (en) * | 2018-06-28 | 2018-11-30 | 燕生（福建）生物工程有限公司 | A kind of instant bird's nest collagen Gly-His-Lys and preparation method thereof |
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Effective date of registration: 20170505 Address after: Yinzhou District Xian Xiang Zhen Lu Pu Cun 315141 Zhejiang city of Ningbo Province Patentee after: Ningbo East Fine Powder Technology Co., Ltd. Address before: 315104, Ningbo, Zhejiang Province, Yinzhou District, 289 Jiang Dong Road (Ningbo Yinzhou Donghai powder coating Co., Ltd.) Patentee before: Yinzhou Donghai Powder Coating Co., Ltd., Ningbo |
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