CN101747820B - Solvent-free epoxy rust-proof paint - Google Patents
Solvent-free epoxy rust-proof paint Download PDFInfo
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- CN101747820B CN101747820B CN2008101828216A CN200810182821A CN101747820B CN 101747820 B CN101747820 B CN 101747820B CN 2008101828216 A CN2008101828216 A CN 2008101828216A CN 200810182821 A CN200810182821 A CN 200810182821A CN 101747820 B CN101747820 B CN 101747820B
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Abstract
The invention discloses a solvent-free epoxy rust-proof paint, in particular to an epoxy paint which is free from comprising organic solvent and harmful pigment and has environmental-protection property and excellent anti-corrosion property, which can adopts different coating ways of the manual brush coating, and comprising a constitute A and a constitute B, wherein the constitute A consists of low molecular weight epoxy resin, active diluent, pigment, dispersing agent, anti-settling agent and flatting agent and is faint yellow; the constitute B consists of cashew nut shell modified phenolic resin, modified alicyclic amine composite curing agent and pigment and is reddish brown; the weight ratio of the constitutes A and B is 5 : 1. By utilizing the paint, the anti-corrosion performance ofthe paint is well improved, so the paint is free from bubbling, rusting and dropping after being immersed in the weak acid, alkaline, oil and salt water for a long time; the paint is applicable to different construction methods, the coating of the paint is free from being restricted by seasons, a great amount of coating expense can be saved, and the service life can be prolonged; and the solvent-free epoxy rust-proof paint can realize excellent anti-corrosion effect, and can be widely suitable for being used as the inner surface anti-corrosion paint for the steel structures, pipelines, storage tanks, tank cars and equipment in the industries of chemical industry, machinery, ship, metallurgy and the like.
Description
Technical field
The present invention relates to a kind of protective system, relate in particular to a kind of steelwork internal surface that is applicable to, have excellent Corrosion Protection and do not contain the two-pack solvent-free epoxy rust-proof paint of organic solvent.
Background technology
In the anticorrosion of steel structure engineering, coating is its main, most economical effective anti-corrosion method always.Be widely used in the internal surface protection against corrosion of anticorrosion of steel structure erosion engineering with its excellent Corrosion Protection as the epoxy resin coating of main film forming substance with epoxy resin always.Yet most of epoxy resin are dissolved in the solvent to be made, and the amount of solid content of coating is generally between 50%～85%, and the volatilization of high amounts of solvents not only causes the injury to environment and application, user of service, and the performance of paint film is impacted.Like solvent evaporates coat-thickness is reduced, there is pore in film coated surface, makes the easy infiltration of corrosive medium etc.In recent years; Solventless epoxy coating obtains people's understanding with the Corrosion Protection of excellence and the environmental-protecting performance that do not contain organic solvent; But general solvent-free pure epoxy class coating the time exists the viscosity increase too fast because of construction, and the usage period is short, and workability is undesirable; Can not manual brushing and defective such as roller coating, its large scale application is restricted.
The present invention selects low-viscosity, low-molecular-weight bisphenol A type epoxy resin for use, can prepare solventless coatings, and is beneficial to the add-on that increases face, filler; Reduce the whole viscosity of coating, reduce cure shrinkage, the paint film cross-linking density after the curing is big; Properties of coating is good, moderate cost.The selection of epoxy hardener is one of characteristics of this patent, requires the mutual miscibility of this solidifying agent and each material good, not volatile, and it is nontoxic to solidify back paint film reality, under comparatively high temps unlikely reaction too fast and make coating applicable period too short, satisfy construction requirement; More than than end temperature (below 0 ℃, general-5 ℃), still have activity, and normal a curing, therefore, it is compound to have selected for use the modification aliphatic cyclic amine of cashew nut shell modified phenolic amine and the low-viscosity of low-temperature curable to carry out, blending ratio 1:1 and process composite curing agent.Heavy metallic pigments such as that the color stuffing of being selected for use requires is not leaded, mercury satisfy the requirement of nontoxic industry, in paint film, have good closure and Corrosion Protection; Make coating have certain rheological; Reduce the cost of coating, therefore, through orthogonal test repeatedly; It is main rust-stabilising pigment that this patent is selected composite zinc phosphate, aluminium triphosphate and red iron oxide for use, and filler is selected permanent white for use.On the confirming of the selection of composite, the auxiliary agent of reactive thinner, resin-pigment ratio, also has the innovation part.The erosion of its mechanical and physical performance and each item comprehensive anticorrosive, ageing-resistant index all are much higher than each item performance index of other solvent-free matched coating, but and the manual brushing that this coating has, low-temperature curable, asepsis environment-protecting have uniqueness.
Summary of the invention
The technical problem that the present invention will solve is to provide a kind of high-performance, the solvent-free anticorrosive coating of bi-component epoxy class; In order to solve the protection against corrosion difficult problem of steel internal surface application; And coating has organic solvent-free and no poisonous pigment; Be fit to various constructional methods, application does not receive characteristics such as season limit, and the present invention also provides the preparation method of said protective system.
The objective of the invention is to realize like this:
One, two-pack non-solvent epoxy anticorrosive coating first component: add epoxy resin, reactive thinner, dispersion agent, face, filler successively, stir, after high speed dispersion becomes mill base, sand mill is ground to 60 μ m; The back slowly adds anti-settling agent, flow agent carries out blending dispersion, and test proportion, viscosity, fineness after-filtration are packaged to be the first component; Composite curing agent and color stuffing allocated together evenly obtain the second component.
It is combined according to the 5:1 weight ratio by first component and second component, it is characterized in that: by weight prescription be:
The first component comprises following composition: by weight prescription be:
(1) low-molecular-weight epoxy resin D331:30～40
(2) reactive thinner: 10～15
(3) dispersion agent: methoxyl group ester propyl propionate solution B YK 163 0.6～1.5
(4) nontoxic face, filler are: zn phosphate 10～15, aluminium triphosphate 3～8, permanent white 4～10
(5) flow agent: Qiba 3,777 0.6～1.5
(6) anti-settling agent: organobentonite 0.2～0.5;
The second component:
Cashew nut shell modified phenolic amine: 30～40
Modification aliphatic cyclic amine: 30～40
Face, filler are: red iron oxide 5～10, permanent white 2～4.
Through instance the present invention is carried out detailed explanation below:
One embodiment of the present of invention are " H955 solventless epoxy coating ", by weight prescription be:
The first component comprises following composition: by weight prescription be:
(1) low-molecular-weight epoxy resin D331:35
(2) reactive thinner: butylglycidyl ether 10, phenyl glycidyl ether 5
(3) dispersion agent: methoxyl group ester propyl propionate solution B YK 163 0.6
(4) nontoxic face, filler are: zn phosphate 12, aluminium triphosphate 4, permanent white 6
(5) flow agent: Qiba 3,777 0.8
(6) anti-settling agent: organobentonite 0.2;
The second component:
Cashew nut shell modified phenolic amine Cardolite NX2003:35
Modification aliphatic cyclic amine (the isophorone diamine IPDA of modification): 35
Face, filler are: red iron oxide 8, permanent white 2.
This product two-pack is used as anti-corrosion primer.Its performance characteristics is:
1. this coating has outstanding corrosion resistance nature, but weak acid resistant, alkali, profit and organic solvent.
2. do not contain organic solvent in the coating, safe and convenient to use.
3. do not contain poisonous pigment, help environmental safety.
4. become thickness together, construction can be accomplished in the general application 1-2 road that only needs, and application does not receive season limit, and (more than 5 ℃) all can normally solidify under coldcondition.
5. have extremely strong sticking power and good mechanical and physical performance, the snappiness height is good, excellent in cushion effect, and wear resisting property is unique.
6. can adopt the mode of manual brushing and roller coating to construct, also can adopt airless spraying.
The key technical indexes of " H955 solventless epoxy coating "
| Test item | Technical indicator | Check data |
| Color and outward appearance | Faint yellow | Conformance with standard |
| The volume solids content | 100％ | 100％ |
| Build | 100 μ m are equivalent to 100 μ m wet films | Conformance with standard |
| Fineness, μ m | ≤60 | 50 |
| Time of drying, h | Surface drying<=4, do solid work<=24 | Surface drying 4 does solid work 24 |
| Sticking power (drawing the circle method), level | 1-2 | 1 |
| Snappiness, mm | 1 | 1 |
| Shock strength, cm | ≥40 | 50 |
| Theoretical lacquer amount, the Kg/m of using 2. the road | 0.11 | Conformance with standard |
| Standard film thickness, μ m/ road | ≥100 | 120 |
| Salt water resistance (3.5%Nacl) | 90d paint film no change | 1 year no change |
| Salt-fog test | 5000 hours no changes | Conformance with standard |
| Anti-zero(ppm) water | 90d paint film no change | 1 year no change |
| Humid heat test | 5000 hours no changes | Conformance with standard |
| Shelf lives, a | ≥1 | Conformance with standard |
Claims (5)
1. solvent-free epoxy rust-proof paint, it is characterized in that: the first component is made up of low-molecular-weight epoxy resin, reactive thinner, color stuffing, dispersion agent, anti-settling agent, flow agent, and is faint yellow; Component B is formed reddish-brown by cashew nut shell modified phenolic amine and modification aliphatic cyclic amine composite curing agent, color stuffing; Do not contain organic solvent, described solvent-free epoxy rust-proof paint is combined according to 5: 1 weight ratios by first component and second component, wherein:
The first component by weight prescription be:
(1) low-molecular-weight epoxy resin D331:30-40
(2) reactive thinner: 10-15
(3) dispersion agent: methoxyl group resin acid propyl ester solution B YK 1630.6-1.5
(4) nontoxic color stuffing is: zn phosphate 10-15, aluminium triphosphate 3-8, permanent white 4-10
(5) flow agent: Qiba 37770.6-1.5
(6) anti-settling agent: organobentonite 0.2-0.5;
The second component:
Cashew nut shell modified phenolic amine: 30-40
Modification aliphatic cyclic amine: 30-40
Color stuffing is: red iron oxide 5-10, permanent white 2-4.
2. solvent-free epoxy rust-proof paint according to claim 1 is characterized in that, reactive thinner is: butylglycidyl ether 5-10, phenyl glycidyl ether 3-5.
3. solvent-free epoxy rust-proof paint according to claim 1 and 2; It is characterized in that in cashew nut shell modified phenolic amine and the modification aliphatic cyclic amine composite curing agent, cashew nut shell modified phenolic amine is Cardolite NX2003; The modification aliphatic cyclic amine is the isophorone diamine of modification, blending ratio 1: 1.
4. according to the preparation method of each described solvent-free epoxy rust-proof paint among the claim 1-3, it is characterized in that, comprise the step of preparation first component and second component:
Add low-molecular-weight epoxy resin, reactive thinner, dispersion agent, color stuffing successively, stir, after high speed dispersion becomes mill base, sand mill is ground to 60 μ m; The back slowly adds anti-settling agent, flow agent carries out blending dispersion, and test proportion, viscosity, fineness after-filtration are packaged to be the first component;
Composite curing agent and color stuffing allocated together evenly obtain the second component.
5. the coating process of solvent-free epoxy rust-proof paint according to claim 1; It is characterized in that, general application 2-3 road during such paint spraying, the per pass coating thickness can reach 100-200 μ m; Can adopt craft and Airless spraying coating process, thereby form a complete coating project system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101828216A CN101747820B (en) | 2008-12-10 | 2008-12-10 | Solvent-free epoxy rust-proof paint |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101828216A CN101747820B (en) | 2008-12-10 | 2008-12-10 | Solvent-free epoxy rust-proof paint |
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| CN101747820A CN101747820A (en) | 2010-06-23 |
| CN101747820B true CN101747820B (en) | 2012-04-18 |
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| CN2008101828216A Active CN101747820B (en) | 2008-12-10 | 2008-12-10 | Solvent-free epoxy rust-proof paint |
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| CN101857765B (en) * | 2010-06-25 | 2012-08-22 | 嘉宝莉化工集团股份有限公司 | Epoxy resin coating and preparation method thereof |
| CN102382552B (en) * | 2011-10-12 | 2014-01-01 | 上海海隆赛能新材料有限公司 | Low temperature cured solvent-free epoxy anticorrosion paint and its preparation method |
| CN102321423B (en) * | 2011-10-27 | 2013-04-24 | 中国海洋石油总公司 | Heavy-duty anti-corrosion phenolic epoxy coating |
| CN102533052B (en) * | 2011-12-28 | 2013-08-28 | 江苏大中制漆有限公司 | Solvent-free type epoxy zinc rich primer and preparation method thereof |
| CN103319980B (en) * | 2012-03-22 | 2016-02-10 | 中国石油天然气集团公司 | A kind of high abrasion protective system of crossing pipeline |
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| CN104017458A (en) * | 2014-03-31 | 2014-09-03 | 中国船舶重工集团公司第七二五研究所 | Solvent-free epoxy antirust coating capable of coating with rust and preparation method thereof |
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| CN113174193A (en) * | 2021-04-07 | 2021-07-27 | 青岛海洋新材料科技有限公司 | Solvent-free low-surface-treatment multifunctional hybrid coating and preparation method thereof |
| CN116273790A (en) * | 2021-12-20 | 2023-06-23 | 上海岐海防腐工程技术有限公司 | Steel structure engineering field anti-corrosion maintenance coating structure and construction method thereof |
| CN115521686A (en) * | 2022-10-12 | 2022-12-27 | 浙江固邦科技有限公司 | High molecular special anticorrosive paint primer and preparation process and application thereof |
| CN116751499A (en) * | 2023-08-04 | 2023-09-15 | 江苏云湖新材料科技有限公司 | Nano silicon nitride modified high-temperature-resistant solvent-free epoxy wear-resistant acid-resistant coating |
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| CN101747820A (en) | 2010-06-23 |
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Effective date of registration: 20131111 Address after: 200081 Shanghai city North Sichuan Road No. 2261 Granville building 18 floor Patentee after: Shanghai Haiyue Paint Co., Ltd. Patentee after: KUNSHAN HAIYUE PAINT CO., LTD. Address before: 200081 Shanghai city North Sichuan Road No. 2261 Granville building 18 floor Patentee before: Shanghai Haiyue Paint Co., Ltd. |
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Address after: 200081 Shanghai city North Sichuan Road No. 2261 Granville building 18 floor Patentee after: Shanghai Haiyue Paint Co., Ltd. Patentee after: Haiyue paint (Kunshan) Co. Ltd. Address before: 200081 Shanghai city North Sichuan Road No. 2261 Granville building 18 floor Patentee before: Shanghai Haiyue Paint Co., Ltd. Patentee before: KUNSHAN HAIYUE PAINT CO., LTD. |