CN103254730B - A kind of take low molecular weight bisphenol S type epoxy resin as powder coating of major ingredient and preparation method thereof - Google Patents
A kind of take low molecular weight bisphenol S type epoxy resin as powder coating of major ingredient and preparation method thereof Download PDFInfo
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- CN103254730B CN103254730B CN201310119907.5A CN201310119907A CN103254730B CN 103254730 B CN103254730 B CN 103254730B CN 201310119907 A CN201310119907 A CN 201310119907A CN 103254730 B CN103254730 B CN 103254730B
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Abstract
The invention discloses a kind of take low molecular weight bisphenol S type epoxy resin as powder coating of major ingredient and preparation method thereof, and the weight part of its constitutive material is: low molecular weight bisphenol S type epoxy resin 40-50, resol 30-50, isotatic polypropylene resin 70-80, titanium dioxide 10-15, activity charcoal powder 2-5, bismuthous oxide bismuth trioxide 3-5, mica powder 5-7, urotropine 2-4 and membrane-forming agent 3.3-3.8; Present invention employs low molecular weight bisphenol S type epoxy resin is main raw material, with the addition of mica powder and membrane-forming agent, strengthens the Combination between each raw material, improve the surperficial levelling of powder coating simultaneously, have high gloss retention, improve the ornamental of powder coating, the product qualified rate prepared is high.
Description
Technical field
The present invention relates to powder coating, being specifically related to a kind of take low molecular weight bisphenol S type epoxy resin as powder coating of major ingredient and preparation method thereof.
Background technology
Along with the sustained, stable growth of China's economy and improving constantly of living standards of the people, the powder coating business of hardware also constantly increases, especially the industry such as instrument, traffic facilities, aluminium section bar, powder coating can to metal carrying for excellent corrosionproof protection and decorate properties, but because the antifouling property of the existing coating for above-mentioned field is undesirable, coating often adheres to all kinds of dust, dirt or even greasy dirt; Anti-stick subsides ability is also undesirable, and the coating that existing powder coating is formed is exposed to the sun out of doors for a long time, easily occur the phenomenons such as foaming, cracking, stripping under the effect of natural conditions such as to drench with rain, and therefore, the mechanical property of coating is also undesirable.
Summary of the invention
The object of the present invention is to provide a kind of take low molecular weight bisphenol S type epoxy resin as powder coating of major ingredient and preparation method thereof.
The present invention adopts following technical scheme to achieve these goals:
Take low molecular weight bisphenol S type epoxy resin as the powder coating of major ingredient, the weight part of its constitutive material is: low molecular weight bisphenol S type epoxy resin 40-50, resol 30-50, isotatic polypropylene resin 70-80, titanium dioxide 10-15, activity charcoal powder 2-5, bismuthous oxide bismuth trioxide 3-5, mica powder 5-7, urotropine 2-4 and membrane-forming agent 3.3-3.8.
Take low molecular weight bisphenol S type epoxy resin as the powder coating of major ingredient, the weight part of its constitutive material is: low molecular weight bisphenol S type epoxy resin 45, resol 40, isotatic polypropylene resin 75, titanium dioxide 12, activity charcoal powder 3.5, bismuthous oxide bismuth trioxide 4, mica powder 6, urotropine 3 and membrane-forming agent 3.5.
Take low molecular weight bisphenol S type epoxy resin as the preparation method of the powder coating of major ingredient, comprise the following steps:
(1) the coated mica powder of carbon:
A: mica powder is crushed to 100-120 order, then joins in deionized water by the weight part of constitutive material, and mica powder and deionized water weight ratio are 1:1.8-2.5, Homogeneous phase mixing;
B: add the glucose accounting for mica powder quality 8-12% in gained mixed solution, stir, Homogeneous phase mixing, and then add the molybdenum carbide accounting for glucose quality 0.8-1.5%, stir mixing; Mist projection granulating, obtains the mica powder powder that organic carbon is coated, spray-dired inlet temperature 160-200 DEG C, temperature out 50-70 DEG C;
C: gained mica powder powder loads in crucible, vacuumizes, passes into inert atmosphere, be heated to 280-350 DEG C of sintering 2.5-3.5h under keeping inert atmosphere conditions, then cooling obtains the coated mica powder of carbon;
(2) preparation of membrane-forming agent:
A: first 22-26 part chloroprene rubber CR322,4.5-5.0 part dimethylbenzene, 2.5-3.5 part ethylene glycol diglycidylether, the mixing of 16-20 part E-12 epoxy resin are added in reactor, react 1-2 hour at 80-100 DEG C of temperature;
B: add 13-15 part MALEIC ANHYDRIDE, 1.7-1.9 part 2 in the reactor of step (1), 6 ditertbutylparacresols, 0.7-1.0 part vinyltrimethoxy silane, 1.8-2.2 part linking agent TAIC, be uniformly mixed, under 70-90 DEG C of temperature condition, react 3-5 hour, to obtain final product;
(3) each raw material except mica powder and membrane-forming agent is taken by the weight part of constitutive material, then the raw material after processing with step (1) and (2) carries out preparing burden and puts into mixing machine mixing, the compound mixed is put into twin screw extruder extrude, after sheet material cooling after extruding, put into crusher for crushing, grind to form 160-200 object powder, packaging warehouse-in, powder curing condition is: solidification value 180-195 DEG C, insulation 30-35 minute.
Advantage of the present invention:
Present invention employs low molecular weight bisphenol S type epoxy resin is main raw material, with the addition of mica powder and membrane-forming agent, strengthens the Combination between each raw material, improve the surperficial levelling of powder coating simultaneously, have high gloss retention, improve the ornamental of powder coating, the product qualified rate prepared is high.
Embodiment
Embodiment 1: the powder coating taking low molecular weight bisphenol S type epoxy resin as major ingredient, the weight part (kg) of its constitutive material is: low molecular weight bisphenol S type epoxy resin 45, resol 40, isotatic polypropylene resin 75, titanium dioxide 12, activity charcoal powder 3.5, bismuthous oxide bismuth trioxide 4, mica powder 6, urotropine 3 and membrane-forming agent 3.5.
Take low molecular weight bisphenol S type epoxy resin as the preparation method of the powder coating of major ingredient, comprise the following steps:
(1) the coated mica powder of carbon:
A: mica powder is crushed to 110 orders, then joins in deionized water by the weight part of constitutive material, and mica powder and deionized water weight ratio are 1:2.0, Homogeneous phase mixing;
B: add the glucose accounting for mica powder quality 10% in gained mixed solution, stir, Homogeneous phase mixing, and then add the molybdenum carbide accounting for glucose quality 1.3%, stir mixing; Mist projection granulating, obtains the mica powder powder that organic carbon is coated, spray-dired inlet temperature 180 DEG C, temperature out 50-70 DEG C;
C: gained mica powder powder loads in crucible, vacuumizes, passes into inert atmosphere, be heated to 320 DEG C of sintering 3h under keeping inert atmosphere conditions, then cooling obtains the coated mica powder of carbon;
(2) preparation of membrane-forming agent:
A: first 24 parts of chloroprene rubber CR322,4.8 parts of dimethylbenzene, 3.0 parts of ethylene glycol diglycidylethers, 18 parts of E-12 epoxy resin mixing are added in reactor, react 1.5 hours at 90 DEG C of temperature;
B: add in the reactor of step (1) 14 parts of MALEIC ANHYDRIDE, 1.8 part 2,6 ditertbutylparacresols, 0.9 part of vinyltrimethoxy silane, 2.0 parts of linking agent TAIC, be uniformly mixed, under 80 DEG C of temperature condition react 4 hours, to obtain final product;
(3) each raw material except mica powder and membrane-forming agent is taken by the weight part of constitutive material, then the raw material after processing with step (1) and (2) carries out preparing burden and puts into mixing machine mixing, the compound mixed is put into twin screw extruder extrude, after sheet material cooling after extruding, put into crusher for crushing, grind to form 180 object powder, packaging warehouse-in, powder curing condition is: solidification value 188 DEG C, is incubated 32 minutes.
Electrostatic spraying constructional method is adopted to act in the steel tube surface of spray treatment this powder coating, through the abundant solidification of 195 DEG C, naturally cool to room temperature, after placing 24h, measure coating performance, its coating shock strength >=87cm, salt-fog resistant time >=2780h, artificial accelerated aging time >=2930h, resistance toheat >=585, exposure to weather(ing) 10 months is non-foaming, non-corrosive, do not ftracture, do not peel off.
Claims (2)
1. be a powder coating for major ingredient with low molecular weight bisphenol S type epoxy resin, it is characterized in that the weight part of its constitutive material is: low molecular weight bisphenol S type epoxy resin 40-50, resol 30-50, isotatic polypropylene resin 70-80, titanium dioxide 10-15, activity charcoal powder 2-5, bismuthous oxide bismuth trioxide 3-5, mica powder 5-7, urotropine 2-4 and membrane-forming agent 3.3-3.8;
Its preparation method, comprises the following steps:
(1) the coated mica powder of carbon:
A: mica powder is crushed to 100-120 order, then joins in deionized water by the weight part of constitutive material, and mica powder and deionized water weight ratio are 1:1.8-2.5, Homogeneous phase mixing;
B: add the glucose accounting for mica powder quality 8-12% in gained mixed solution, stir, Homogeneous phase mixing, and then add the molybdenum carbide accounting for glucose quality 0.8-1.5%, stir mixing; Mist projection granulating, obtains the mica powder powder that organic carbon is coated, spray-dired inlet temperature 160-200 DEG C, temperature out 50-70 DEG C;
C: gained mica powder powder loads in crucible, vacuumizes, passes into inert atmosphere, be heated to 280-350 DEG C of sintering 2.5-3.5h under keeping inert atmosphere conditions, then cooling obtains the coated mica powder of carbon;
(2) preparation of described membrane-forming agent:
A: first 22-26 part chloroprene rubber CR322,4.5-5.0 part dimethylbenzene, 2.5-3.5 part ethylene glycol diglycidylether, the mixing of 16-20 part E-12 epoxy resin are added in reactor, react 1-2 hour at 80-100 DEG C of temperature;
B: add 13-15 part MALEIC ANHYDRIDE, 1.7-1.9 part 2 in the reactor of step a, 6-ditertbutylparacresol, 0.7-1.0 part vinyltrimethoxy silane, 1.8-2.2 part linking agent TAIC, be uniformly mixed, under 70-90 DEG C of temperature condition, react 3-5 hour, to obtain final product;
(3) each raw material except mica powder and membrane-forming agent is taken by the weight part of constitutive material, then the raw material after processing with step (1) and (2) carries out preparing burden and puts into mixing machine mixing, the compound mixed is put into twin screw extruder extrude, after sheet material cooling after extruding, put into crusher for crushing, grind to form 160-200 object powder, packaging warehouse-in, powder curing condition is: solidification value 180-195 DEG C, insulation 30-35 minute.
2. according to claim 1 take low molecular weight bisphenol S type epoxy resin as the powder coating of major ingredient, it is characterized in that the weight part of its constitutive material is: low molecular weight bisphenol S type epoxy resin 45, resol 40, isotatic polypropylene resin 75, titanium dioxide 12, activity charcoal powder 3.5, bismuthous oxide bismuth trioxide 4, mica powder 6, urotropine 3 and membrane-forming agent 3.5.
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| CN201310119907.5A CN103254730B (en) | 2013-04-09 | 2013-04-09 | A kind of take low molecular weight bisphenol S type epoxy resin as powder coating of major ingredient and preparation method thereof |
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| CN201310119907.5A CN103254730B (en) | 2013-04-09 | 2013-04-09 | A kind of take low molecular weight bisphenol S type epoxy resin as powder coating of major ingredient and preparation method thereof |
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| CN103254730B true CN103254730B (en) | 2015-08-05 |
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| CN103483981A (en) * | 2013-09-03 | 2014-01-01 | 蚌埠德美过滤技术有限公司 | Powder paint |
| CN104387894A (en) * | 2014-12-07 | 2015-03-04 | 李永志 | Anticorrosive car powder coating |
| CN106752497A (en) * | 2016-11-25 | 2017-05-31 | 广西点图包装有限公司 | A kind of indoor decorative paint |
| CN108296153A (en) * | 2017-12-29 | 2018-07-20 | 安徽兴乐健身器材有限公司 | A kind of method of the anti-skidding anti-sweat processing of handle for dumbbell |
| CN113105812B (en) * | 2021-04-13 | 2022-03-18 | 江苏旌翔建材科技有限公司 | Negative ion environment-friendly coating and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10324824A (en) * | 1997-05-27 | 1998-12-08 | Kansai Paint Co Ltd | Thermosetting double-layer powder coating material and method for forming coating film therefrom |
| CN1786093A (en) * | 2005-11-30 | 2006-06-14 | 北京北航天汇科技孵化器有限公司 | Expansion type fire retarding epoxide resin powder paint suitable for steel structure and its preparation method |
| CN101885941A (en) * | 2010-08-20 | 2010-11-17 | 湖南先悦科技有限公司 | Underwater epoxy resin coating and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10324824A (en) * | 1997-05-27 | 1998-12-08 | Kansai Paint Co Ltd | Thermosetting double-layer powder coating material and method for forming coating film therefrom |
| CN1786093A (en) * | 2005-11-30 | 2006-06-14 | 北京北航天汇科技孵化器有限公司 | Expansion type fire retarding epoxide resin powder paint suitable for steel structure and its preparation method |
| CN101885941A (en) * | 2010-08-20 | 2010-11-17 | 湖南先悦科技有限公司 | Underwater epoxy resin coating and preparation method thereof |
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Effective date of registration: 20170704 Address after: 516200 Guangdong District of Huiyang city in Huizhou province long autumn Weibucun Keshi Industrial Park building L Patentee after: Huizhou Cheng Cheng composite material Co., Ltd. Address before: Fan Yang Zhen 241200 Anhui city of Wuhu province Fanchang County Yingchun Road, Xiyuan area 17 Patentee before: Liu Qingfang |