CN103555170B - Fast setting coiled material powder coating and production method - Google Patents
Fast setting coiled material powder coating and production method Download PDFInfo
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- CN103555170B CN103555170B CN201310481119.0A CN201310481119A CN103555170B CN 103555170 B CN103555170 B CN 103555170B CN 201310481119 A CN201310481119 A CN 201310481119A CN 103555170 B CN103555170 B CN 103555170B
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Abstract
The invention discloses a kind of fast setting coiled material powder coating, comprise hydroxy resin, solidifying agent, flow agent, deblocking agent, defoamer, pigment and filler, said components is hydroxy resin according to weight proportion part is 50 parts ~ 60 parts, 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 ~ 36.6 parts.The present invention obtains this powder coating under adopting the hydroxyl resin of isocyanic ester, organotin and ammonia and low softening point to interact, wherein the deblocking agent of organotin and ammonia can reduce the deblocking temperature of closure isocyanic ester, improve curing speed, due to the growth without molecular weight before not reaching deblocking temperature, therefore excellent levelling effect can be reached.Net effect improves curing speed, and set time drops to 3min from original 30min, decreases baking time, saves the energy, shortens the production cycle, reduces production cost, enhance productivity.
Description
Technical field
The present invention relates to a kind of coiled material coating, the particularly production method of fast setting coiled material powder coating and above-mentioned powder coating.
Background technology
At present, coiled material coating majority is paint spraying, its shortcoming is that work-ing life is short, need to spray ability 2 ~ 3 times shaping, paint film easily peels off, aging, thus there is long service life on the market, 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 DEG C/30-20min, production cycle will be increased like this, increase cost, and the bending property of existing coiled material powder coating is poor, 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 a kind of can realize fast setting and the coiled material powder coating of strong adhesion, good bending property to solve above-mentioned the deficiencies in the prior art.
To achieve these goals, fast setting coiled material powder coating designed by the present invention, comprise hydroxy resin, solidifying agent, flow agent, deblocking agent, defoamer, pigment and filler, said components is hydroxy resin according to weight proportion part is 50 parts ~ 60 parts, 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 that (165 DEG C of mensuration) is moored in 100 pool ~ 300, and softening temperature is 110 DEG C ~ 115 DEG C; Described solidifying agent is isocyanic ester, water white transparency particulate state, and softening temperature is 90 DEG C ~ 110 DEG C, and second-order transition temperature is 40 DEG C ~ 65 DEG C, 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 DEG C ~ 105 DEG C, solid content >=99%, and 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 the slickness on surface, and ammonia then can accelerate deblocking speed; Described defoamer is conventional emulsion silicone oil, belongs to non-polar compound, the silicone antifoam agent based on methyl polysiloxane; 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, 1 minute ~ 5 minutes are uniformly mixed in mixing machine, then the material mixed is added in screw extrusion press and melt extrudes, machine cavity temperature is at 88 ~ 92 DEG C, extruder temperature is 98 DEG C ~ 102 DEG C, then the truncation of extruded material cooling press is slit into sheet, deliver in pulverizer again and pulverize, through cyclonic separation, vibration screening obtains granularity required powder coating product about 200 order ~ 300 orders.At this, described granularity about 200 order ~ 300 orders in granularity unit " order " be the granularity unit that one's own profession professional and technical personnel knows, the commercially also sieve that is granularity unit with this " order " on sale specially, so no further details to be given herein.Adopt electrostatic spraying or electrostatic fluidized bed construction technology to be coated on coiled material galvanized sheet this powder coating, recording its curing speed is 230 DEG C/3min.
The fast setting coiled material powder coating that the present invention obtains, the hydroxyl resin of isocyanic ester, organotin and ammonia and low softening point is adopted to 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 the growth without molecular weight before not reaching deblocking temperature, therefore excellent levelling effect can be reached.Simultaneously isocyanic ester is very active, solution be honored as a queen can with hydroxy resin rapid reaction, generate the film of amino-formate bond.Esters of acrylic acid flow agent can reduce the surface tension of coating, makes film quality homogenizing and levelling.Net effect improves curing speed, and set time drops to 3min from original 30min, thus reduce baking time, saves the energy, shortens the production cycle, reduces production cost, enhance 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 hydroxy resin according to weight proportion part is 50 parts, 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 points, 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 DEG C ~ 115 DEG C; Solidifying agent is isocyanic ester, and softening temperature is 90 DEG C ~ 110 DEG C, and second-order transition temperature is 40 DEG C ~ 65 DEG C; Flow agent is esters of acrylic acid, and softening temperature is 80 DEG C ~ 105 DEG C, 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 emulsion silicone oil, the silicone antifoam agent based on methyl polysiloxane; 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, 1 minute ~ 5 minutes are uniformly mixed in mixing machine, then the material mixed is added in screw extrusion press and melt extrudes, machine cavity temperature is at 88 DEG C ~ 92 DEG C, extruder temperature is 98 DEG C ~ 102 DEG C, then the truncation of extruded material cooling press is slit into sheet, deliver in pulverizer again and pulverize, through cyclonic separation, vibration screening obtains granularity required powder coating product about 200 order ~ 300 orders.
The fast setting coiled material powder coating obtained by the present embodiment adopts electrostatic spraying or electrostatic fluidized bed construction technology to be coated on coiled material galvanized sheet, record its curing speed and become 230 DEG C/3min from original 180 DEG C ~ 200 DEG C/30-20min, the curved performance of its T is obtained in addition good through national coating quality Supervision Test Center detection, in resistance to neutral salt spray test, bubble, without other film defect phenomenons without variable color, nothing in paint film 480h; Adopt GB/T 1732-1993 paint film shock-resistant assay method, 1000g weight is freely fallen within from 50cm and scribbles on the coiled material galvanized sheet of this powder coating, after 4 magnifying glasses observations, paint film flawless wrinkle and the phenomenon such as to peel off.
Embodiment 2:
Fast setting coiled material powder coating provided by the invention, its each component is hydroxy resin according to weight proportion part is 60 parts, 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 point, 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 DEG C ~ 115 DEG C; Solidifying agent is isocyanic ester, and softening temperature is 90 DEG C ~ 110 DEG C, and second-order transition temperature is 40 DEG C ~ 65 DEG C; Flow agent is esters of acrylic acid, and softening temperature is 80 DEG C ~ 105 DEG C, 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 emulsion silicone oil, the silicone antifoam agent based on methyl polysiloxane; 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 powder coating obtained by the present embodiment adopts electrostatic spraying or electrostatic fluidized bed construction technology to be coated on coiled material galvanized sheet, record its curing speed and become 230 DEG C/3min from original 180 DEG C ~ 200 DEG C/30-20min, the curved performance of its T is obtained in addition good through national coating quality Supervision Test Center detection, in resistance to neutral salt spray test, bubble, without other film defect phenomenons without variable color, nothing in paint film 480h; Adopt GB/T 1732-1993 paint film shock-resistant assay method, 1000g weight is freely fallen within from 50cm and scribbles on the coiled material galvanized sheet of this powder coating, after 4 magnifying glasses observations, paint film flawless wrinkle and the phenomenon such as to peel off.
Embodiment 3:
Fast setting coiled material powder coating provided by the invention, its each component is hydroxy resin according to weight proportion part is 55 parts, 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 point, 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 DEG C ~ 115 DEG C; Solidifying agent is isocyanic ester, and softening temperature is 90 DEG C ~ 110 DEG C, and second-order transition temperature is 40 DEG C ~ 65 DEG C; Flow agent is esters of acrylic acid, and softening temperature is 80 DEG C ~ 105 DEG C, 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 emulsion silicone oil, the silicone antifoam agent based on methyl polysiloxane; 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 powder coating obtained by the present embodiment adopts electrostatic spraying or electrostatic fluidized bed construction technology to be coated on coiled material galvanized sheet, record its curing speed and become 230 DEG C/3min from original 180 DEG C ~ 200 DEG C/30-20min, the curved performance of its T is obtained in addition good through national coating quality Supervision Test Center detection, in resistance to neutral salt spray test, bubble, without other film defect phenomenons without variable color, nothing in paint film 480h; Adopt GB/T 1732-1993 paint film shock-resistant assay method, 1000g weight is freely fallen within from 50cm and scribbles on the coiled material galvanized sheet of this powder coating, after 4 magnifying glasses observations, paint film flawless wrinkle and the phenomenon such as to peel off.
Claims (3)
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 hydroxy resin according to weight proportion part is 50 parts ~ 60 parts, solidifying agent is 11 parts ~ 14 parts, flow agent is 1 part, deblocking agent is 1 part, and defoamer is 0.4 part, and the gross weight of pigment and filler is 23.6 parts ~ 36.6 parts;
The hydroxyl value of wherein said hydroxy resin is 45 mg KOH/g ~ 55mg KOH/g, and softening temperature is 110 DEG C ~ 115 DEG C;
Described solidifying agent is isocyanic ester, and its softening temperature is 90 DEG C ~ 110 DEG C, and second-order transition temperature is 40 DEG C ~ 65 DEG C;
Described flow agent is esters of acrylic acid, and its softening temperature is 80 DEG C ~ 105 DEG C;
Described deblocking agent is organotin and ammonia, and ratio is 6:4;
Described defoamer is conventional emulsion silicone oil, belongs to non-polar compound, the silicone antifoam agent based on methyl polysiloxane;
Described pigment and filler are conventional pigment and filler, and pigment comprises titanium dioxide, ferric oxide or three primary colours mixture, and filler comprises barium sulfate and ground barium sulfate.
2. the production method of a 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, 1 minute ~ 5 minutes are uniformly mixed in mixing machine, then the material mixed is added in screw extrusion press and melt extrudes, then the truncation of extruded material cooling press is slit into sheet, deliver in pulverizer and pulverize, through cyclonic separation, vibration screening obtains granularity powder coating product needed for 200 order ~ 300 orders.
3. the production method of fast setting coiled material powder coating according to claim 2, when it is characterized in that melt extruding in screw extrusion press, machine cavity temperature is at 88 DEG C ~ 92 DEG C, and extruder temperature is 98 DEG C ~ 102 DEG C.
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Citations (3)
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|---|---|---|---|---|
| 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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| WO2003029369A1 (en) * | 2001-09-27 | 2003-04-10 | Asahi Glass Company, Limited | Composition for fluororesin powder coating material |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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)
| Title |
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| 张春华等.封端异氰酸酯研究进展.《化工新型材料》.1996,(第12期),第23页4.催化剂的影响. * |
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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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