CN104140735A - High-specific-weight high-zinc-content heavy-duty epoxy zinc-rich primer and preparation method thereof - Google Patents
High-specific-weight high-zinc-content heavy-duty epoxy zinc-rich primer and preparation method thereof Download PDFInfo
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Abstract
The invention provides a high-specific-weight high-zinc-content heavy-duty epoxy zinc-rich primer. The primer contains a component A and a component B and is characterized in that the component A contains epoxy resin, high-purity zinc powder, environment-friendly zinc phosphate, an assistant A/B, organic bentonite and a mixed solvent; the component B contains cardanol modified polyamide resin, an assistant C and a mixed solvent. The product provided by the invention has the characteristics of salt mist resistance and high specific weight, the solid content reaches 95%, the zinc content reaches 80%, the primer solid proportion reaches 3.0g/ml, and the salt mist resistance can achieve that a primer film is free from bubbling, rusting and peeling for more than 5,000 hours; the product can be extensively applied to the field of metallic heavy-duty products in relatively adverse climates and seaboards, such as bridges, steel structures, ships and petroleum pipelines.
Description
Technical field
The present invention relates to epoxy zinc rich primer and manufacture field, refer to especially heavy anticorrosion epoxy zinc rich primer of a kind of high specific gravity high zinc content and preparation method thereof.
Background technology
Metallic corrosion is the very serious problem that modern people face, and this problem has almost spreaded all over the every field of social production.Due to corrosion, a large amount of hard-earned useful materials become waste material, cause protection to weaken, and equipment failure, has consumed resource and also caused huge financial loss, has also indirectly caused the problems such as environmental pollution.For a long time, people have adopted many technology to be protected metal, prevent corrosion, and wherein one of effective means is exactly at metallic surface coating erosion shield, to completely cut off corrosive medium and metallic matrix.
Zinc-rich paint is a kind of heavy-duty coating of excellent anti-corrosion performance, has been widely applied to the every field of industrial antisepsis, and it is divided into organic zinc-rich paint and inorganic zinc coating, and epoxy zinc-enriched paint is most important a kind of in organic zinc-rich paint.Due to the electropotential of the zinc electropotential lower than iron, therefore the zinc in epoxy zinc-enriched paint can play sacrificial protection effect, the product of zinc powder after being corroded can be filled the hole of filming, the damage location that sealing is filmed in addition.So to a certain extent, the zinc content proportion in coating is higher, and its antiseptic property is better.But due to technology and process technology limit, in existing zinc rich primer zinc content generally below 80%, can not guarantee between zinc powder and zinc powder with the current delivery between ground.
In addition, under awful weather and the contour salt mist environment of coastal area, metal is more prone to be corroded, and the salt spray resistance of common rust-inhibiting paint often duration is not enough, is difficult to meet equipment needs.Along with people are under the more and more higher prerequisite of metal heavy-duty technical requirements, a high specific gravity, high metallic zinc content are developed in market in urgent need, and salt spray resistance has the novel environment-friendly epoxy zinc rich primer compared with quantum jump on conventional epoxy zinc rich primer.
Summary of the invention
The present invention proposes heavy anticorrosion epoxy zinc rich primer of a kind of high specific gravity high zinc content and preparation method thereof, can guarantee that product solid content and metallic zinc content improve, and salt spray resistance duration extends.
Technical scheme of the present invention is achieved in that the heavy anticorrosion epoxy zinc rich primer of a kind of high specific gravity high zinc content, comprise component A and B component, it is characterized in that: component A comprises epoxy resin, high purity zinc powder, environmental protection zinc phosphate, auxiliary agent A/B, organobentonite, mixed solvent; B component comprises modified by cardanol polyamide resin, auxiliary agent C and mixed solvent.
As preferably, the weight percent of described component A is: epoxy resin 8-15%, high purity zinc powder 80-86%, environmental protection zinc phosphate 0.8-4%, auxiliary agent A/B:0.5-4%, organobentonite 0.2-1.2%, mixed solvent 0.8-2%; Wherein the weight percent of B component is: modified by cardanol polyamide resin 35-60%, auxiliary agent C:0.8-2.5%, mixed solvent 40-65%; The mass percent of component A and B component is 100:5-20.
As preferably, the weight percent of described component A is: epoxy resin 10-13%, high purity zinc powder 80-84%, environmental protection zinc phosphate 1-3%, auxiliary agent A/B:1-3%, organobentonite 0.5-1%, mixed solvent 1-1.6%; Wherein the weight percent of B component is: modified by cardanol polyamide resin 40-52%, auxiliary agent C:1-2%, mixed solvent 46-59%; The mass percent of component A and B component is 10:1.
As preferably, described mixed solvent for by toluene, dimethylbenzene, propyl carbinol, ethanol, Virahol, butanone, cyclohexanone etc. wherein several ratios according to benzene class 60%, alcohols 20%, ketone 20% combine.
The preparation method of the heavy anticorrosion epoxy zinc rich primer of high specific gravity high zinc content: described component first technique is: adopt mixed solvent that organobentonite is first activated, then toward adding activated good organobentonite in load weighted epoxy resin, adopt 400-600 rev/min to stir 10-15 minute, then slowly add auxiliary agent, adopt 400-600 rev/min to stir 5-8 minute, slowly add again high purity zinc powder, environmental protection zinc phosphate, adopt 600-800 rev/min of high speed dispersion 30-40 minute.
As preferably, described component second technique is: the mixed solvent in formula is joined and produced in cylinder, adopts 400-600 rev/min and add while stirring modified by cardanol polyamide resin and auxiliary agent, adopt 400-600 rev/min of stirring 10-15 minute.
As preferably, dry plate is realized: according to component A: component B=10:1 carries out proportioning, proportioning out adopts hydrometer jar to measure paint proportion afterwards, more than can reaching 3.0g/ml than weight average, then adopt mixed solvent to carry out the adjustment of spray viscosity, spray viscosity is adjusted into 20-30S(NK-2 cup), spraying layer 2-3, dry plate is placed in 25 ℃ of thermostat containers and was detected traditional performance from dry 48 hours, and slaking was tested salt spray resistance after 7 days, and the dry plate film thickness of salt spray resistance is controlled at 80-100 μ m.
Compared with prior art, the invention has the advantages that: this series products has salt spray resistance, hyperbaric feature, its amount of solid content reaches 95%, metallic zinc content reaches 80%, the solid proportion of paint reaches 3.0g/ml, salt spray resistance reach 5000 hours above paint films non-foaming, do not return rust, do not fall paint.This series products can be widely used on the metal heavy-duty product of the comparatively severe and coastal area of weather, as: the fields such as bridge, steel structure, boats and ships, petroleum pipe line.
Embodiment
Below the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Raw material is as follows:
Epoxy resin (E44, Yueyang Ba Ling petrochemical industry)
High purity zinc powder (the 500 height of eye purity zinc powder Jiangsu Cheng Xinye of section)
Environmental protection zinc phosphate (PZ20 encircles outstanding chemical industry)
Auxiliary agent A (1501 this chemistry of sea inscription)
Auxiliary agent B (2602 Jiangsu special chemical article)
Organobentonite (HY-758 Zhejiang Hong Yu novel material company limited)
Modified by cardanol polyamide resin (NC540 Ka Delai chemistry)
This chemistry of auxiliary agent C(1121 sea inscription)
Mixed solvent: by the choosings such as toluene, dimethylbenzene, propyl carbinol, ethanol, Virahol, butanone, cyclohexanone wherein several ratios according to benzene class 60%, alcohols 20%, ketone 20% combine.
The component A paint formula proportioning of table 1: embodiment 1～embodiment 5
Preparation method is:
(1) adopt mixed solvent that organobentonite HY-758 is activated;
(2) E44 epoxy resin is added and produce in cylinder, add activated good HY-758, adopt 400-600 rev/min to stir 10-15 minute;
(3) add 1501,2602 auxiliary agents, adopt 400-600 rev/min to stir 5-8 minute;
(4) add 500 height of eye purity zinc powders, PZ20, adopt 600-800 rev/min to disperse 30-40 minute.
Table 2: solidifying agent 1～solidifying agent 5 formulas
1, mixed solvent is added and produce in cylinder, adopt 400-600 rev/min of stirring;
2, add while stirring NC540 epoxy hardener and 1121 auxiliary agents, adopt 400-600 rev/min to stir 10-15 minute.
Performance test
Test method is: by embodiment 1 and solidifying agent 1, embodiment 2 and solidifying agent 2, embodiment 3 and solidifying agent 3, embodiment 4 and solidifying agent 4, embodiment 5 and solidifying agent 5 are respectively according to the proportioning paint of 10:1, adopt mixed solvent to be diluted to spray viscosity (20-30S, NK-2 cup), get salt spray resistance test steel plate and standard-bred mouth iron plate and carry out phosphatization or grinding process, by the paint spraying having mixed up on material, salt spray resistance tested steel plate thickness is controlled at 80-100 micron thickness, on tinplate sheet, gauge control is at the thickness of 20-30 micron, after 48 hours do solid work completely, do all-round property testing, slaking was tested salt spray resistance after 7 days.
Time of drying is according to GB/T1728-1979 (1989), sticking power is according to GB/T5210-2006, impact is according to GB/T1732-1993, toughness is according to GB/T1731-1993, proportion is according to GB/T6750-2007, viscosity is according to GB/T6753.3-1998, resistance to neutral salt spray is according to GB/T1771-1991, in paint film, iron content is according to GB/T4956-2003, dry film is tested according to GB/T9793-1997 containing belonging to zinc content, over-all properties and the market product 1 that accords with TB/T1527-2011 railway steel bridge protection coating standard, CN102559002A, CN1407690A, CN102533052A contrasts.
The dry plate the performance test results that component A and component B realize after by proportioning
By upper table correlation data, can be found out, the present invention has clear superiority on solid proportion and salt-fog resistant time, especially resistance to neutral salt spray reaches more than 5000 hours, can be widely used on the metal heavy-duty product of the comparatively severe and coastal area of weather (as: bridge, steel structure, boats and ships, petroleum pipe line etc.).
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. the heavy anticorrosion epoxy zinc rich primer of high specific gravity high zinc content, comprises component A and B component, it is characterized in that: component A comprises epoxy resin, high purity zinc powder, environmental protection zinc phosphate, auxiliary agent A/B, organobentonite, mixed solvent; B component comprises modified by cardanol polyamide resin, auxiliary agent C and mixed solvent.
2. the heavy anticorrosion epoxy zinc rich primer of high specific gravity high zinc content according to claim 1, is characterized in that: the weight percent of described component A is: epoxy resin 8-15%, high purity zinc powder 80-86%, environmental protection zinc phosphate 0.8-4%, auxiliary agent A/B:0.5-4%, organobentonite 0.2-1.2%, mixed solvent 0.8-2%; Wherein the weight percent of B component is: modified by cardanol polyamide resin 35-60%, auxiliary agent C:0.8-2.5%, mixed solvent 40-65%; The mass percent of component A and B component is 100:5-20.
3. the heavy anticorrosion epoxy zinc rich primer of high specific gravity high zinc content according to claim 2, is characterized in that: the weight percent of described component A is: epoxy resin 10-13%, high purity zinc powder 80-84%, environmental protection zinc phosphate 1-3%, auxiliary agent A/B:1-3%, organobentonite 0.5-1%, mixed solvent 1-1.6%; Wherein the weight percent of B component is: modified by cardanol polyamide resin 40-52%, auxiliary agent C:1-2%, mixed solvent 46-59%; The mass percent of component A and B component is 10:1.
4. the heavy anticorrosion epoxy zinc rich primer of high specific gravity high zinc content according to claim 3, is characterized in that: described mixed solvent for by toluene, dimethylbenzene, propyl carbinol, ethanol, Virahol, butanone, cyclohexanone etc. wherein several ratios according to benzene class 60%, alcohols 20%, ketone 20% combine.
5. according to the preparation method of the heavy anticorrosion epoxy zinc rich primer of any described high specific gravity high zinc content of claim 1-4, it is characterized in that: described component first technique is: adopt mixed solvent that organobentonite is first activated, then toward adding activated good organobentonite in load weighted epoxy resin, adopt 400-600 rev/min to stir 10-15 minute, then slowly add auxiliary agent, adopt 400-600 rev/min to stir 5-8 minute, slowly add again high purity zinc powder, environmental protection zinc phosphate, adopt 600-800 rev/min of high speed dispersion 30-40 minute.
6. high specific gravity high zinc content according to claim 5 weighs the preparation method of anticorrosion epoxy zinc rich primer, it is characterized in that: described component second technique is: the mixed solvent in formula is joined and produced in cylinder, adopt 400-600 rev/min and add while stirring modified by cardanol polyamide resin and auxiliary agent, adopt 400-600 rev/min to stir 10-15 minute.
7. high specific gravity high zinc content according to claim 6 weighs the preparation method of anticorrosion epoxy zinc rich primer, it is characterized in that: dry plate is realized: according to component A: component B=10:1 carries out proportioning, proportioning out adopts hydrometer jar to measure paint proportion afterwards, more than can reaching 3.0g/ml than weight average, then adopt mixed solvent to carry out the adjustment of spray viscosity, spray viscosity is adjusted into 20-30S(NK-2 cup), spraying layer 2-3, dry plate is placed in 25 ℃ of thermostat containers from dry 48 hours detection traditional performances, slaking was tested salt spray resistance after 7 days, the dry plate film thickness of salt spray resistance is controlled at 80-100 μ m.
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Cited By (6)
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| CN104559678A (en) * | 2015-01-28 | 2015-04-29 | 中远关西涂料化工（天津）有限公司 | Temperature-difference resistant two-component modified epoxy coating for offshore platform |
| CN104559669A (en) * | 2015-01-09 | 2015-04-29 | 上海大学 | Organic graphene anticorrosive paint applied to marine ship |
| CN105017926A (en) * | 2015-06-27 | 2015-11-04 | 浙江大学舟山海洋研究中心 | Rusted-coating nanometer composite zinc-containing anticorrosive coating for steel structure |
| CN105219253A (en) * | 2015-10-08 | 2016-01-06 | 江苏华夏制漆科技有限公司 | A kind of asphalt modification epoxy phosphate zinc heavy antisepsis priming paint and preparation method thereof |
| CN107739567A (en) * | 2017-11-02 | 2018-02-27 | 成都金川田农机制造有限公司 | Anti-corrosion epoxy zinc rich primer and preparation method thereof and preparation method thereof |
| CN111621177A (en) * | 2020-06-11 | 2020-09-04 | 三棵树涂料股份有限公司 | Low-VOC cold zinc spraying coating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104559669A (en) * | 2015-01-09 | 2015-04-29 | 上海大学 | Organic graphene anticorrosive paint applied to marine ship |
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| CN105017926A (en) * | 2015-06-27 | 2015-11-04 | 浙江大学舟山海洋研究中心 | Rusted-coating nanometer composite zinc-containing anticorrosive coating for steel structure |
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| CN105219253A (en) * | 2015-10-08 | 2016-01-06 | 江苏华夏制漆科技有限公司 | A kind of asphalt modification epoxy phosphate zinc heavy antisepsis priming paint and preparation method thereof |
| CN107739567A (en) * | 2017-11-02 | 2018-02-27 | 成都金川田农机制造有限公司 | Anti-corrosion epoxy zinc rich primer and preparation method thereof and preparation method thereof |
| CN111621177A (en) * | 2020-06-11 | 2020-09-04 | 三棵树涂料股份有限公司 | Low-VOC cold zinc spraying coating and preparation method thereof |
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Application publication date: 20141112 |