CN1279131C - Coiled material priming paint coating and preparing method thereof - Google Patents
Coiled material priming paint coating and preparing method thereof Download PDFInfo
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- CN1279131C CN1279131C CN 200410020613 CN200410020613A CN1279131C CN 1279131 C CN1279131 C CN 1279131C CN 200410020613 CN200410020613 CN 200410020613 CN 200410020613 A CN200410020613 A CN 200410020613A CN 1279131 C CN1279131 C CN 1279131C
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Abstract
The present invention relates to prime paint for coiled materials, which belongs to the field of paint, and particularly to special paint used for coating the surfaces of steel plates and aluminum plates to manufacture the precoated coiled materials. The paint is composed of 45 to 55 weight portions of linear polyester resin or epoxy resin, 3 to 7 weight portions of amino resin, 25 to 35 weight portions of antirust pigment, 10 to 20 weight portions of additives and 1 to 3 weight portions of solvent, wherein the linear polyester resin or epoxy resin has the solid content of 60%, the viscosity of 20 to 30, the Jiashi of 25 DEG C and the acid value less than 8 mgKOH/g. The prime paint of the present invention has the excellent performances of corrosion prevention and salt-fog resistance, and besides the performance of corrosion prevention, the prime paint using linear polyester resin as a base material has strong adhesive force and the bending property better than that of the epoxy resin prime paint so as to satisfy the technical requirements of the rapid high-temperature solidified film production with a roll steel unit; the prime paint is suitable for hot-galvanized plates, electrically-galvanized plates, alloyed plates, cold-rolled plates, etc.
Description
Technical field
The invention belongs to paint field,, make a kind of professional coating that pre-coated coil uses in particular for coated steel plates, surface of aluminum plate.
Background technology
Pre-coated coil is because light weight, and property is excellent, and is inexpensive and be widely used, along with the continuous developing in development of technology and market, use more and more wide, except that construction industry, as automobile making, the boats and ships interior finish, household electrical appliances, furniture, get up in fields such as freight container also fast development.
Advanced both at home and abroad at present priming lacquer of coiled material is preferably and adopts the big E-30 Resins, epoxy of relative molecular mass is main, be equipped with auxiliary agent, crosslinking and curing agent makes, can satisfy common low speed roller coating needs preferably, but for high speed roller coating (especially more than the 100m/s), viscosity was also high when the coating solid content was high, and dry solidification speed is slow, adaptability is not good, in addition, hardness and flexible coordination are not good enough, and salt fog resistance and machinability have much room for improvement.
Summary of the invention
The objective of the invention is to overcome above-mentioned not enough problem, a kind of priming lacquer of coiled material coating is provided, have excellent anticorrosion salt spray resistance, also have good sticking power in addition, bending property is good.Its method for making also is provided in addition.
The technical scheme that the present invention is adopted for achieving the above object is: priming lacquer of coiled material coating, be made up of wire alkyd resin or Resins, epoxy, aminoresin, rust-stabilising pigment, auxiliary agent and mixed solvent, each ingredients weight parts is wire alkyd resin or Resins, epoxy: aminoresin: rust-stabilising pigment: mixed solvent: auxiliary agent=45-55: 3-7: 25-35: 10-20: 1-3; Wire alkyd resin solid content 60% wherein, viscosity 20-30 Jia Shi/25 ℃, acid number is less than 8mgKOH/g.
The linear polyester resin also can be to adopt our company's self-control product, the polymkeric substance that adopts polyvalent alcohol and polyprotonic acid polycondensation to form, and the each component weight part ratio is: polyvalent alcohol: polyprotonic acid: polycondensation catalyst: solvent=30-50: 30-60: 0.03-0.08: 35-50; Wherein polyvalent alcohol is selected from neopentyl glycol, propylene glycol, TriMethylolPropane(TMP), hydroxypivalic acid DOPCP, and polyprotonic acid is an adipic acid and to, m-phthalic acid; Polycondensation catalyst is an esterifying catalyst; Solvent is 150# high boiling aromatic hydrocarbon solvent and butyl glycol ether; The resulting polymers solid content is 50-65%, and viscosity is 20-30 Jia Shi/25 ℃; Acid number≤8mgKOH/g.
The weight part ratio of described each component of polyvalent alcohol is: neopentyl glycol: propylene glycol: TriMethylolPropane(TMP): hydroxypivalic acid DOPCP=15-30: 5-15: 2～10: 8-15; The polyprotonic acid weight part ratio is an adipic acid: m-phthalic acid or terephthalic acid=10-25: 20-40.
Preparation as follows: the polycondensation monomer of input formula ratio and polycondensation catalyst, reflux solvent dimethylbenzene in reactor, at the logical carbon dioxide of liquid level, heat up and stirring, after being warmed up to 200-210 ℃ with 4-6h, insulation 2-3h, continue to be warmed up to 220-230 ℃, insulation, dehydration, after polycondensation to acid number is cooled to 190 ℃ less than 8mgKOH/g, adding solvent ethylene glycol butyl ether and 150#, to adjust viscosity be 20-30 Jia Shi/25 ℃, and it is 50-65% that latting drown transfers to solids content, 150 ℃ filter transparent wire resin.
What described aminoresin was suitable for is methyl-etherified aminoresin, as the special company of cyanogen 303,747 resins of first promise company etc.
Described pigment is selected rustless property for use, and color is with pale yellow in the majority, and raw materials quality is stable during color matching, and aberration is little, and solids content is stable, the coating thickness unanimity.
The collocation of described mixed solvent can not be ignored, consider the solvability of mixed solvent, factors such as performance gradient, surface tension, the present invention adopts mixed solvent, and mixed solvent is CAC: DBE: 150# high boiling aromatic hydrocarbon solvent: butyl ether: butyl ester: butanols is by weight than 15-50: 20-40: 10-50: 10-30: 10-20: 0-10 is mixed.
The ratio of described auxiliary agent and resin and kind and consumption according to the performance requriements of high-performance priming paint, optimize following auxiliary agent by test, and wherein dispersion agent is suitable for is BYK104S, the BYK104 of German Bi Ke chemical company; That wetting agent is suitable for is BYK161, BYK110, BYK325; That catalyzer is suitable for is BYK450; That flow agent is suitable for is BYK358, BYK354; That defoamer is suitable for is BYK057, BYK053, BYK077; Anti-settling agent BYK204.
The method for making of priming lacquer of coiled material coating of the present invention: by the described weight part ratio of prescription linear polyester resin or Resins, epoxy accurate measurement are added material-compound tank,, start stirring and add pigment and filler by weight than adding mixed solvent and auxiliary agent, by elder generation's heavy order input in light back, mix, after being uniformly dispersed, stop to stir, begin to grind, check mesh-of-grind, mill base viscosity is qualified to fineness, stir grinding qualified mill base, according to the mill base number in the prescription; Reference sample levelling color.
The present invention compared with similar products, superior performance sees Table 1, table 2.
Priming paint of the present invention has excellent anticorrosion salt fog resistance, the priming paint of being made base-material by linear polyester also has good sticking power except that having antiseptic property, bending property is better than epoxy primer, be adapted to the coil unit manufacturing technique requirent of high temperature rapid curing film especially, appointment priming paint with supporting positive finish paint of our company and back side lacquer is applicable to heat zinc coating plate, electrolytic galvanized sheet, alloying plate and cold rolled plate material etc.Before construction application, need to adapt to the roller coat viscosity of unit, and substrate, pretreating agent are done the matching performance test with the thinner adjustment.Make the separating test of cutting crooked and that cash as substrate and come off, priming paint also must come off.
Description of drawings
Accompanying drawing is a process flow sheet of the present invention.
Embodiment
The invention will be further described below in conjunction with embodiment, but be not limited to embodiment.
Embodiment 1
Preparation linear polyester resin: at first inspection machine moves the commentaries on classics situation, heating system is normal, check material by following prescription, accurate measurement, i.e. neopentyl glycol 20kg, propylene glycol 10kg, TriMethylolPropane(TMP) 6kg, hydroxyl special 11kg, oxalic acid 15kg, m-phthalic acid 35kg, polycondensation catalyst 0.05kg, second dibutyl ether 10kg, 150#34kg; Material is dropped in the conversion unit, fill and lead up water trap, closed reactor with dimethylbenzene, open the emptying valve, begin to heat up, stir, be warmed up to 200 ℃, back flow reaction 2h, continue to be warmed up to 230 ℃, the dehydration polycondensation is cooled to below 190 ℃ less than 5mgKOH/g to acid number and adds butyl glycol ether and 150# and adjust viscosity to 20-30 Jia Shi/25 ℃, filters below 150 ℃ and detects, get transparent linear polyester resin, standby.
Preparation priming lacquer of coiled material coating: checked before the batching that whether material-compound tank is clean, has no-sundries, impurity.Check material (batching sees Table 3) by prescription, the resin accurate measurement is added material-compound tank, add mixed solvent, auxiliary agent, start and stir adding pigment, filler, the order input that weighs by the light back of elder generation (will prevent to sneak into impurity, find that material has water, muddiness when feeding intake, should in time stop to feed intake during the pigment caking), mix no dry powder, after being uniformly dispersed, stop to stir the commentaries on classics grinding step.Check the whether normally operation of pipeline, sand mill, take away pump before grinding, can start take away pump after the affirmation, the crawl sand mill grinds, and in time opens cooling water valve, the levelling feeding speed, check mesh-of-grind, mill base viscosity, qualified to fineness, 50 ℃-60 ℃ of control oil temperature, stir grinding qualified mill base, according to the mill base number in the prescription; Reference sample levelling color.The products obtained therefrom performance sees Table 4.
Embodiment 2-5
According to the described material proportion of table 3, embodiment 1 described method for making is produced pale yellow priming lacquer of coiled material coating, and the products obtained therefrom performance sees Table 4, and wherein the linear polyester resin can be a product supplied on the market, also can be our company's self-control product.
Table 1 the present invention and the contrast of like product salt-fog resistant test
| Storage period/h in the salt fog cabinet | The plate face | Draw the fork place | Net result | ||
| Bubble | Rust spot | ||||
| Coil coating of the present invention | 300 500 800 1000 | 5 5 4 4 | 5 5 5 5 | 5 5 4 4 | 15 15 13 13 |
| Similar coil coating | 100 300 500 | 5 3 2 | 4 3 3 | 4 3 2 | 13 9 7 |
Plate face foaming (the foaming area accounts for the ratio of the total area)
5: 0%; 4:＜0.2%; 3:＜0.5%; 2:＜1%; 1:＜3%; 0:＞3% plate face rust spot (the rust spot area accounts for the ratio of the total area)
5: 0%; 4:＜0.2%; 3:＜0.5%; 2:＜1%; 1:＜3%; 0:＞3% corrosion width (measurement) from drawing the slant range of fork to the maximum width of modifying
5∶＜1mm；4∶1～2mm；3∶2～4mm；2∶4～7mm；1∶7～10mm；0∶＞10mm
Table 2 product of the present invention and like product are relatively
The pale yellow polyester base paint formulation of table 3
The pale yellow polyester primer performance of table 4 table
Claims (6)
1, priming lacquer of coiled material coating, it is characterized in that: be made up of wire alkyd resin, aminoresin, rust-stabilising pigment, auxiliary agent and mixed solvent, each ingredients weight parts is than being the wire alkyd resin: aminoresin: rust-stabilising pigment: mixed solvent: auxiliary agent=45-55: 3-7: 25-35: 10-20: 1-3;
Wherein the wire alkyd resin is the polymkeric substance that polyvalent alcohol and polyprotonic acid polycondensation form, and the each component weight part ratio is: polyvalent alcohol: polyprotonic acid: polycondensation catalyst: solvent=30-50: 30-60: 0.03-0.08: 35-50; Polyvalent alcohol is selected from neopentyl glycol, propylene glycol, TriMethylolPropane(TMP) and hydroxypivalic acid DOPCP, and polyprotonic acid is hexanodioic acid and terephthalic acid or m-phthalic acid mixture; Catalyzer is an esterifying catalyst; Solvent is 150# high boiling aromatic hydrocarbon solvent and butyl glycol ether; The resulting polymers solid content is 50-65%, and viscosity is 20-30 Jia Shi/25 ℃; Acid number≤8mgKOH/g.
2, priming lacquer of coiled material coating according to claim 1 is characterized in that: the weight part ratio of used each component of polyvalent alcohol of synthesizing linear vibrin is: neopentyl glycol: propylene glycol: TriMethylolPropane(TMP): hydroxypivalic acid DOPCP=15-30: 5-15: 2-10: 8-15; The polyprotonic acid weight part ratio is a hexanodioic acid: m-phthalic acid or terephthalic acid=10-25: 20-40.
3, priming lacquer of coiled material coating according to claim 1 is characterized in that: mixed solvent is an ethylene glycol ether acetate: mixed dibasic acid dimethyl ester: 150# high boiling aromatic hydrocarbon solvent: butyl ether: butyl ester: butanols is by weight than 15-50: 20-40: 10-50: 10-30: 10-20: 0-10 is mixed.
4, priming lacquer of coiled material coating according to claim 1 is characterized in that: the auxiliary agent dispersion agent is BYK104S or BYK104; Wetting agent is BYK161, BYK110 or BYK325; Catalyzer is BYK450; Flow agent is BYK358 or BYK354; Defoamer is BYK057, BYK053 or BYK077; Anti-settling agent BYK204.
5, priming lacquer of coiled material coating according to claim 1 is characterized in that: aminoresin is methyl-etherified aminoresin.
6, the method for making of priming lacquer of coiled material coating according to claim 1, it is characterized in that: linear polyester resin accurate measurement is added material-compound tank by the described weight part ratio of prescription, by weight than adding mixed solvent and auxiliary agent, start and stir and adding pigment and filler, by elder generation's heavy order input in light back, mix, after being uniformly dispersed, stop to stir, begin to grind, check mesh-of-grind, mill base viscosity, qualified to fineness, stir grinding qualified mill base, according to the mill base amount in the prescription, reference sample levelling color.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020613 CN1279131C (en) | 2004-05-27 | 2004-05-27 | Coiled material priming paint coating and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020613 CN1279131C (en) | 2004-05-27 | 2004-05-27 | Coiled material priming paint coating and preparing method thereof |
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| CN1583912A CN1583912A (en) | 2005-02-23 |
| CN1279131C true CN1279131C (en) | 2006-10-11 |
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| CN 200410020613 Expired - Fee Related CN1279131C (en) | 2004-05-27 | 2004-05-27 | Coiled material priming paint coating and preparing method thereof |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002306B (en) * | 2009-08-31 | 2013-01-23 | 无锡市金箭造漆有限公司 | Water-based precoated coiled material coating primer and preparation method thereof |
| CN102286242B (en) * | 2011-07-15 | 2013-05-01 | 苏州吉人漆业有限公司 | Acrylic polyurethane hot galvanizing substrate paint and preparation method thereof |
| CN102719172B (en) * | 2012-05-22 | 2014-09-03 | 北京红狮漆业有限公司 | Metal anti-corrosive primer, preparation method, application and application method thereof |
| CN102993422B (en) * | 2012-11-30 | 2015-01-28 | 无锡市虎皇漆业有限公司 | Epoxy modified saturated polyester resin for undercoat of coil coating and undercoat of coil coating |
| CN103203310A (en) * | 2013-03-28 | 2013-07-17 | 鞍钢股份有限公司 | Method for producing back plate of liquid crystal television |
| CN103509388A (en) * | 2013-09-10 | 2014-01-15 | 马鞍山市金韩涂料制造有限公司 | Epoxy resin anti-rust paint for transformer shell and preparation method thereof |
| CN103555115B (en) * | 2013-11-04 | 2015-12-09 | 安徽菱湖漆股份有限公司 | A kind of galvanized sheet coating and preparation method thereof |
| CN103965750B (en) * | 2014-04-08 | 2016-04-13 | 王洪卫 | Special coatings for tin plate printing of a kind of chemical barrel and preparation method thereof |
| CN105567058B (en) * | 2014-10-13 | 2018-05-11 | 立邦工业涂料(上海)有限公司 | A kind of coil coating for bonding PVC film and preparation method thereof |
| CN105860744B (en) * | 2016-04-12 | 2018-04-03 | 湖南省金海科技有限公司 | A kind of one-component quick setting epoxy ash priming paint of high salt spray resistance and preparation method thereof |
| CN109385183B (en) * | 2018-10-26 | 2021-06-15 | 黄河三角洲京博化工研究院有限公司 | Water-based epoxy primer for precoating coiled material and preparation method thereof |
| CN110804375A (en) * | 2019-11-15 | 2020-02-18 | 广州立邦涂料有限公司 | Back paint composition for high-coating-weight coil, back paint for coil and application of back paint |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tieling Yongxin Paint Co., Ltd. Assignor: Jie Juhui Contract fulfillment period: 2009.12.6 to 2015.12.6 contract change Contract record no.: 2009210000290 Denomination of invention: Coiled material priming paint coating and preparing method thereof Granted publication date: 20061011 License type: Exclusive license Record date: 2009.12.9 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.12.6 TO 2015.12.6; CHANGE OF CONTRACT Name of requester: TIELING YONGXIN PAINTS CO., LTD. Effective date: 20091209 |
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Granted publication date: 20061011 Termination date: 20120527 |