CN105733413B - A kind of solvent-free epoxy novolac coating - Google Patents
A kind of solvent-free epoxy novolac coating Download PDFInfo
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- CN105733413B CN105733413B CN201410742957.3A CN201410742957A CN105733413B CN 105733413 B CN105733413 B CN 105733413B CN 201410742957 A CN201410742957 A CN 201410742957A CN 105733413 B CN105733413 B CN 105733413B
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Abstract
The present invention develops a kind of new, environment amenable non-solvent epoxy phenolic coating, and the acrylic acid modified bisphenol A-type liquid epoxy resin mixing that the low molecule novolac epoxy resin and epoxide equivalent that the composite epoxy resin is 195~208 by epoxide equivalent are 169~178 is formed.The coating compensate for acidproof common epoxy coating, the deficiency of methanol tolerant performance and not add solvent environmentally friendly; its comprehensive performance especially excellent chemical resistance, is widely used as ship chemicals cabin and needs the protection materials of the facility inner walls such as acidproof, methanol tolerant.
Description
Technical field
The present invention develops a kind of new, environment amenable non-solvent epoxy phenolic coating, and after tested and reality should
With learning：The coating compensate for acidproof common epoxy coating, the deficiency of methanol tolerant performance and not add solvent environmentally friendly,
Its comprehensive performance especially excellent chemical resistance, is widely used as ship chemicals cabin and needs acidproof, methanol tolerant etc. to set
Apply the protection materials of inner wall.
Background technology
Ordinary epoxy resin coating, because it is with excellent chemical resistance performance, preferable heat endurance and electrical insulating property
And have the features such as very strong adhesive force with metal base, and be widely used in auto industry, shipbuilding industry, aircraft industry,
The field such as chemical industry and electrical equipment industry, but because its acid resistance is poor, it is difficult to meet containing stronger acidic materials corrosion ring
The requirement of shelter in border, it, which is used, certain limitation.And epoxy phenolics is by linear phenol-aldehyde resin and common epoxy chlorine
The linear structure polymer of propane synthesis, which than ordinary epoxy resin contains more epoxy groups, and (epoxy functionalities are more than
2) crosslink density of coating is big after, curing with crosslinking agent, and heat resistance and chemical-resistant are higher than bisphenol A type epoxy resin.Epoxy
Phenolic resin coating had both inherited the advantages of common epoxy coating adhesive force is good, its anti-corrosive properties is especially acidproof, methanol tolerant performance
It is further improved again, application field is broader.Cn200910243517 discloses a kind of anticorrosion glue tape for pipeline, because being wound around
Pipeline, coating has higher elasticity to have to add end ring oxygen nitrile rubber elastomer, end ring oxygen polyurethane elastomer, after curing
Sizing material is rubbery state.And itself and need not soak medium, the outer anti-corrosion of pipeline does not contact chemical mediator, antiseptic property substantially
It is relatively low.
The content of the invention
The object of the present invention is to provide a kind of solvent-free, environment amenable epoxy novolac coating, which compensate for general
Logical epoxy coating is acidproof, deficiency and excellent chemical resistance of methanol tolerant performance, is widely used as ship chemicals cabin, pressure
Carry the inner wall anti-corrosive protection materials of cabin, grease cabin and the facility such as steel or concrete storage tank.By liquid bisphenol A epoxy, acrylic acid
The body that modified epoxy is formed.It can effectively solve the problems, such as that epoxy systems acid resistance is poor using the system, only using alicyclic ring amine
Curing agent, can be only achieved optimized solidification speed, crosslink density.So as to reach the requirement of acidic mediums.
The solvent-free epoxy novolac coating of the present invention is made of A and B component, and the content of each component is as follows:
Component A is by following material composition：
B component is by following material composition：
Raw material weight number
23 parts by weight of modified aliphatic cyclic amine
2 parts by weight of curing accelerator
The composite epoxy resin is worked as by the low molecule novolac epoxy resin and epoxy that epoxide equivalent is 195~208
The acrylic acid modified bisphenol A-type liquid epoxy resin measured as 169~178, which mixes, to be formed.The molecular structure of novolac epoxy resin
Formula：
The low molecular weight liquid epoxy phenolics that the epoxide equivalent that selection can prepare solventless coatings is 195~208
Film-forming resins of the EPALLOY8240 as coating, molecular weight 300-400.The acrylic acid modified ring of epoxide equivalent 169~178
Oxygen tree fat is BYD-7201, can effectively improve the curing rate of coating and increase the crosslink density of coating, make the anti-corrosion of coating
Performance is more excellent.
The modified alicyclic ring amine hardener is R-2259.Although conventional polyamide curing agent anti-corrosive properties are compared with water resistance
It is excellent, but the chemical-resistant of its curing system is poor；Under the aromatic amine room temperature of good chemical resistance with epoxy novolac tree
Fat, which can not fully cure, and curing agent itself is under a cloud has carcinogenesis；Under fatty amine room temperature with novolac epoxy resin have compared with
High curing degree, but the chemical-resistant of its solidfied material not as aliphatic cyclic amine solidfied material it is good.The present invention, which is selected under room temperature, to fill
Point cure, and curing agent R- of the more excellent aliphatic cyclic amine of solidfied material chemical resistance as normal-temperature curing epoxy phenolic resin
2259.But in experimentation, it has been found that alicyclic ring amine hardener and the time that epoxy phenolics is fully cured are longer, are full
The needs actually used enough, with the addition of 2,4,6- tri- (dimethylamino methyl) phenol cured accelerating agents in curative systems.
The color stuffing is mainly using titanium dioxide, blanc fixe, talcum powder, trbasic zinc phosphate, aluminium triphosphate, mica
Powder, they are several with the use of the physical mechanical property and antiseptic property that can effectively improve coating.According to the physics of film
Mechanical performance, color stuffing dosage account for 40 parts by weight in 100 parts by weight coating dosages.
The auxiliary agent includes defoamer, wetting dispersing agent, levelling agent.In the total dosage of 100 parts by weight of coating, defoamer is
DOW 100F account for 2 parts by weight, and wetting dispersing agent accounts for 1.5 parts by weight for angstrom husband's Kona 5065, and levelling agent accounts for 1.5 weights for moral modest 410
Measure part.
The epoxy coating is configured to two component of A, B, the composition of component A：30 parts by weight of composite epoxy resin, face are filled out
Expect 40 parts by weight, 5 parts by weight of auxiliary agent；The composition of B component：Modified 23 parts by weight of alicyclic ring amine hardener, 2 weight of curing accelerator
Part.
The coating of the present invention is when in use according to A:B=3:1 weight ratio mixes, and is sprayed using two-component high pressure airless spray equipment
Apply, the coating performance index formed is as follows：
1st, adhesive force 22MPa (GB/T5210-2006 paint and varnish pulls open method adhesion test)
2nd, paint film intact (GB/T1771-2007 paint and varnish when salt spray resistance (film thickness 500um or so) 10000 is small
The measure of resistance to neutral salt spray performance)
3rd, 12 circulation paint films of paint film cold-hot alternating (- 55~80 DEG C, 2 hours 1 are circulated) are intact.(GJB
GJB150.5-1986 temperature shock tests)
4th, when resistance to distilled water, tap water 15000 are small, paint film is unchanged, and (GB/T9274-1988 paint and varnish resistant to liquid is situated between
The measure of matter)；
5th, when sea water resistance 8000 is small, paint film is unchanged (measure of GB/T9274-1988 paint and varnish resistant to liquid media).
6th, when resistance to 10%NaOH 5000 is small, paint film does not crack, does not fall off, unchanged (the GB/T9274-1988 colored paints of paint film
With the measure of varnish resistant to liquid medium).
7th, when resistance to 10% sulfuric acid, 10% hydrochloric acid 8000 are small, paint film does not crack, does not fall off, the unchanged (GB/T9274- of paint film
The measure of 1988 paint and varnish resistant to liquid media).
8th, when methanol tolerant, ethanol, butanol 8000 are small, paint film does not crack, does not fall off, the unchanged (GB/T9274-1988 of paint film
The measure of paint and varnish resistant to liquid medium).
9th, when resistance to butyl acetate, dimethylbenzene, cyclohexanone 8000 are small, paint film does not crack, does not fall off, the unchanged (GB/ of paint film
The measure of T9274-1988 paint and varnish resistant to liquid media).
Solvent is not added in the epoxy novolac formulation for coating material of the present invention, normal temperature cure, production and construction process meet environmental protection will
Ask, be widely used as the inner wall anti-corrosive protection of ship chemicals cabin, ballast tank, grease cabin and the facility such as steel or concrete storage tank
Material.
Embodiment
The present invention is further illustrated with reference to embodiment, but the present invention is not limited to these embodiments.
Embodiment 1
30 parts by weight of composite epoxy resin are weighed, puts into stainless cylinder of steel and is stirred with high speed dispersor, add defoaming
2 parts by weight of agent, 1.5 parts by weight of wetting dispersing agent, 1.5 parts by weight of levelling agent, 2 weight of titanium dioxide is uniformly added with resin agitating afterwards
Part, 5 parts by weight of talcum powder, 10 parts by weight of aluminium triphosphate, 8 parts by weight of trbasic zinc phosphate, 3 parts by weight of ferrotitanium powder, 10 weight of mica powder
Part, 2 parts by weight of barium sulfate futher stir uniformly, are then ground to standard fineness, filtering dress with sand mill or three-roll grinder
Bucket becomes coating component A.
Modified 23 parts by weight of alicyclic ring amine hardener are weighed, 2 parts by weight of curing accelerator, are stirred evenly with high speed dispersor,
Filtering barrelling becomes the B component of coating.
By two component of A, B by weight 3 during use：1 ratio mixing, mechanical agitation is uniform, through spraying formed painting
Film properties and commercially available solventless epoxy resin coating are done experiment contrast, as a result see the table below：
From comparing result as can be seen that the present invention developed paint adhesion, cold-hot alternating, resistance to 10% hydrochloric acid,
Resistance to 10% sulfuric acid, methanol tolerant performance are superior to commercially available solventless epoxy coating.
Embodiment 2
In Qingdao, shipyard ship chemicals cabin uses.Construction temperature：8~15 DEG C；Form of construction work：Airless spraying,
Construction twice, interval are not more than 24h；Film thickness：320±20μm.By bulkhead surface sand-blasting process to Sa2.5 during construction.Adopt
With the coating prepared by embodiment 1, two component of A, B is pressed into A:B=3:1 weight ratio is weighed, is mixed evenly, and use is special
High pressure airless spraying apparatus is sprayed, and obtained coating is smooth, surface-brightening.(25 DEG C) of coating room temperature makes after curing seven days
With being checked after 12 months, coating is intact.
Embodiment 3
In certain 2000m3Carbon steel methanol tank inner wall uses.Construction temperature：15~20 DEG C；Form of construction work：High-pressure airless sprays
Apply, twice of constructing, interval is not more than 24h；Film thickness：Tank skin is not less than 200 μm, and tank bottom is not less than 300 μm.Will storage during construction
Top tank structure surface sand-blasting process is to Sa2.5.Using the coating prepared by embodiment 1, two component of A, B is pressed into A:B=3:1 weight
Part weighs cooperation, stirs evenly, is sprayed using special high-pressure airless spraying equipment, obtained coating is smooth, surface-brightening.
(25 DEG C) of coating room temperature uses after curing seven days, is checked after 12 months, no blistering obscission, and coating is intact.
Embodiment 4
Qingdao Xin Yuan environmental protection equipments Co., Ltd tank product is applied to using the coating prepared by embodiment 1.Water
Container inner wall is through blasting treatment to Sa2.5, by A:B=3:The ratio mixing of 1 (weight ratio) uses airless spraying, room temperature
(25 DEG C) cure seven days, are used after being rinsed with clear water.Obtained appearance of coat is smooth, surface-brightening, and anti-permeability is preferable.Contain
Tap water is put using 12 months, checks that coating is not cracked, do not fallen off, coating is intact.
Claims (5)
1. a kind of anticorrosive paint of inner wall heatproof, it is characterized in that, two-component coating, is made of component A and B component, wherein component A
By following material composition：
B component is by following material composition：
Raw material weight number
23 parts by weight of modified aliphatic cyclic amine
2 parts by weight of curing accelerator
The low molecule novolac epoxy resin and epoxide equivalent that the composite epoxy resin is 195~208 by epoxide equivalent be
169~178 acrylic acid modified bisphenol A-type liquid epoxy resin mixing is formed, the low molecule novolac epoxy resin
Molecular weight is 300-400.
2. the anticorrosive paint of inner wall heatproof according to claim 1, it is characterised in that the auxiliary agent include defoamer,
Wetting dispersing agent, levelling agent.
3. the anticorrosive paint of inner wall heatproof according to claim 1, it is characterised in that the curing accelerator is 2,4,
6- tri- (dimethylamino methyl) phenol.
4. the anticorrosive paint of inner wall heatproof according to claim 1, it is characterised in that coating is when in use according to A:B=
3:1 weight ratio mixes, and is sprayed using two-component high pressure airless spray equipment.
5. the preparation method of anticorrosion paint of inner wall heatproof according to claim 1, it is characterised in that weigh composite epoxy
30 parts by weight of resin, put into stainless cylinder of steel and are stirred with high speed dispersor, add 5 parts by weight of auxiliary agent, uniform with resin agitating
2 parts by weight of titanium dioxide, 5 parts by weight of talcum powder, 10 parts by weight of aluminium triphosphate, 8 parts by weight of trbasic zinc phosphate, 3 weight of ferrotitanium powder are added afterwards
Amount part, 10 parts by weight of mica powder, 2 parts by weight of barium sulfate futher stir uniformly, are then ground with sand mill or three-roll grinder
To standard fineness, filtering barrelling becomes coating component A, weighs modified 23 parts by weight of alicyclic ring amine hardener, 2 weight of curing accelerator
Part, stirred evenly with high speed dispersor, filtering barrelling becomes the B component of coating, by two component of A, B by weight 3 during use：1
Ratio mixing, mechanical agitation is uniform.
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| CN201410742957.3A CN105733413B (en) | 2014-12-08 | 2014-12-08 | A kind of solvent-free epoxy novolac coating |
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| CN201410742957.3A CN105733413B (en) | 2014-12-08 | 2014-12-08 | A kind of solvent-free epoxy novolac coating |
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| CN105733413B true CN105733413B (en) | 2018-05-04 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106280874A (en) * | 2016-08-05 | 2017-01-04 | 天津市津海特种涂料装饰有限公司 | A kind of non-ferrous metal connects paint and preparation method thereof |
| CN106318109B (en) * | 2016-08-08 | 2018-07-03 | 深圳市登晟科技有限公司 | A kind of corrosion-resistant bicomponent epoxy resin coating and its preparation method and application |
| CN106675321B (en) * | 2016-11-22 | 2019-02-01 | 海洋化工研究院有限公司 | A kind of heatproof durably anticorrosion paint for vessel sewage cabin |
| WO2018210212A1 (en) * | 2017-05-16 | 2018-11-22 | 新兴河北工程技术有限公司 | Ductile iron pipe having anti-corrosion inner coating, and production process therefor |
| CN108395805B (en) * | 2018-02-12 | 2020-05-19 | 中海油常州涂料化工研究院有限公司 | Flexible ceramic heavy-duty anticorrosive paint and preparation method thereof |
| CN113278343B (en) * | 2021-06-09 | 2022-08-19 | 厦门双瑞船舶涂料有限公司 | Temperature-resistant anticorrosive coating and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103450776A (en) * | 2013-08-06 | 2013-12-18 | 信和新材料股份有限公司 | Formula of solvent-free thermal-spraying environment-friendly heavy anti-corrosion coating and preparation method of coating |
| CN104087124A (en) * | 2014-07-25 | 2014-10-08 | 厦门双瑞船舶涂料有限公司 | Phenol aldehyde epoxy paint with chemical medium resistance and preparation method thereof |
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2014
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103450776A (en) * | 2013-08-06 | 2013-12-18 | 信和新材料股份有限公司 | Formula of solvent-free thermal-spraying environment-friendly heavy anti-corrosion coating and preparation method of coating |
| CN104087124A (en) * | 2014-07-25 | 2014-10-08 | 厦门双瑞船舶涂料有限公司 | Phenol aldehyde epoxy paint with chemical medium resistance and preparation method thereof |
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