CN103805025A - Solvent-free flexible epoxy anticorrosive coating applicable to all-weather construction - Google Patents
Solvent-free flexible epoxy anticorrosive coating applicable to all-weather construction Download PDFInfo
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- CN103805025A CN103805025A CN201310754486.3A CN201310754486A CN103805025A CN 103805025 A CN103805025 A CN 103805025A CN 201310754486 A CN201310754486 A CN 201310754486A CN 103805025 A CN103805025 A CN 103805025A
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Abstract
The invention discloses a solvent-free flexible epoxy anticorrosive coating applicable to all-weather construction, comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 1 part of E-44 epoxy resin, 0.3-0.5 parts of C12-glycidyl ester-dimer acid, 0.2-0.4 parts of sericite powder and 0.15-0.3 parts of assistants; the component B comprises the following raw materials in parts by weight: 1 part of cardanol modified phenolic amine, 0.4-0.6 parts of aliphatic series polyamide and 0.1-0.3 parts of phenyl glycidyl ether. Meanwhile, a preparation method of the solvent-free flexible epoxy anticorrosive coating is disclosed. The coating disclosed by the invention has the advantages of excellent adhesive force, tenacity, chemical resistance and the like, the defect of poor tenacity of the conventional epoxy anticorrosive coating is overcome, and the coating has a long usage period within a wide temperature change range from a high temperature of over 35 DEG C in summer to a low temperature of -5 DEG C in winter. The solvent-free flexible epoxy anticorrosive coating is convenient to construct, rapid to cure, free of an organic solvent, and friendly to environment.
Description
Technical field
The present invention relates to a kind of coating, be specifically related to a kind of flexible epoxy anticorrosion coating of no-solvent type all weather construction.
Background technology
Existing epoxy resin anticorrosive coating exists rigidity greatly and the poor problem of snappiness mostly, and solidifying agent used is often take polymeric amide as main.Therefore cured article, at low temperatures can not be completely curing.
As adopt modified phenolic amine and so on Novel curing agent, although can, in low-temperature curing, compared with curing too fast under hot weather, be unfavorable for construction in summer, hinder so comprehensive use of epoxy anticorrosion coating.
Therefore, rejected the new demand of improving epoxy resin anticorrosive coating.
Summary of the invention
The object of the invention is to, provide a kind of flexible epoxy anticorrosion coating of no-solvent type all weather construction, to overcome the existing above-mentioned shortcoming and defect of prior art.
Technical scheme of the present invention has 2 points substantially:
The first is carried out structural design to epoxy resin, so that the snappiness of epoxy resin is improved.
It two is to adopt the solidifying agent of mixed type, take modified by cardanol phenolic aldehyde amine as main, is aided with polyamide curing agent.To can obtain can easy construction under summer comparatively high temps again in the winter time under cold condition application obtain satisfied solidifying.That is summer can be coating mix after have the well-to-do usage period, and in the winter time sub-zero zero even subzero 5 ℃ still can coated solidified.
Epoxy resin is being carried out in structure design, selecting relative molecular mass little, the large and less E-44 bisphenol A type epoxy resin of hydroxy radical content in molecular chain of cross-linking density.Can make the water tolerance of film be improved with this resin, owing to having lacked the katalysis of hydroxyl, after mixing with solidifying agent, gel time is extended, and is conducive to construction.Also can be made into no-solvent type coating, improving its flexibility, spell with dimeracid Racemic glycidol resin (Shanghai is logical greatly).After the resin of this many carbochains band ester chain structure can make coating system film forming, paint film is more pliable and tougher; Solidifying agent used is selected modified by cardanol pnenolic aldehyde amine hardener and fatty polyamide solidifying agent, and the two ratio with 1:0.5 is mixed.Because adopt the former can make epoxy resin in the time of 5 ℃, about 3 days, just can solidify (this solidifying agent is manufactured through sky science and technology Materials Co., Ltd by Shanghai) completely.And general polyamide curing agent is difficult to reach the solid state of 40% left and right.Due to the structure (phenyl ring, hydroxyl, phenolic hydroxyl group) of modified by cardanol pnenolic aldehyde amine hardener, can make itself and bisphenol A-type E-44 epoxy resin have better consistency, be conducive to reduce dope viscosity, and can increase wettability to ground and cementability, promote and epoxy resin cure, at low temperatures fast setting.In this solidifying agent, contain the straight chain of unsaturated double-bond, make epoxy resin obtain intrinsic toughening and improve its water tolerance.Such solidifying agent coordinates the construction usage period that can be conducive to widen summer with the polyamide curing agent of reaction is suitable, thereby has complementary advantages, and brings out the best in each other.
The technical problem that will solve required for the present invention, can be achieved through the following technical solutions:
As a first aspect of the present invention, the flexible epoxy anticorrosion coating of no-solvent type all weather construction, according to parts by weight meter, comprises A component and B component:
Wherein A component is by 0.3～0.5 part of glycidyl ester, 0.2～0.4 part of the sericite in powder of the dimeracid of 1 part of E-44 epoxy resin, carbon 12, and 0.15～0.3 part of composition of auxiliary agent;
B component is by 1 part of modified by cardanol phenolic aldehyde amine, 0.4～0.6 part of fatty polyamide, and phenyl glycidyl ether 0.1～0.3 part of composition.
Further, described auxiliary agent is 0.01～0.09 part of 0.01～0.09 part of flow agent, 0.01～0.09 part of defoamer, 0.01～0.09 part of wetting dispersing agent and silane coupling agent.As a second aspect of the present invention, the preparation method of the flexible epoxy anticorrosion coating of no-solvent type all weather construction, is characterized in that, according to parts by weight meter, comprises the following steps:
1, the preparation of A component
1.1 in stainless steel charging basket, adds 1 weight part E-44, then adds the phenyl glycidyl ether of glycidyl ester, 0.2～0.4 weight part of the dimeracid of the carbon 12 of 0.3～0.5 weight part and wetting dispersing agent, defoamer, silane coupling agent; Be to disperse about half an hour under 300～400 revs/min at rotating speed, make system even;
1.2 then add 0.05～0.1 weight part process white, 0.05～0.1 weight part talcum powder,, 0.05～0.1 weight part zinc phosphate; Add 0.05～0.2 weight part sericite in powder, high-speed stirring, disperses 1 hour;
1.3 stirring at low speed again, add all the other auxiliary agents, stir after 2 hours, filter with 80 mesh filter screens, so become A component, sealing is stored;
Wherein, in step 1.2, the rotating speed of high-speed stirring is 800 revs/min; In step 1.3, the rotating speed of stirring at low speed is 300 revs/min.
2, the preparation of B component
B component is by 1 parts by weight of cardanol modified phenolic amine, 0.4～0.6 weight part fatty polyamide and 0.1～0.3 weight part phenyl glycidyl ether, obtains B component by dispersion machine dispersed with stirring after 30 minutes;
3, the mixing of A, B component
By A component and B component, the two mixes by weight 10:6～10:7, then carries out application.
Beneficial effect of the present invention:
Compared with prior art, the flexible epoxy anticorrosion coating of no-solvent type all weather construction of the present invention has following advantage:
(1) good sticking power, toughness, chemical-resistant etc., overcome the poor shortcoming of conventional epoxy anticorrosion coating toughness.
(2) can under the wide range of temperature of summer high temperature (35 ℃ of >) and winter low temperature (5 ℃), keep longer usage period, convenient construction, fast setting.
(3) not containing organic solvent, environmentally friendly.
Embodiment
Below in conjunction with specific embodiment, the present invention is done to progressive explanation.Should be understood that following examples are only for the present invention is described but not for limiting scope of the present invention.
Embodiment 1
1, the preparation of A component
1.1 in stainless charging basket, first adds 1 weight part E-44 epoxy resin; Glycidyl ester resin, 0.3 weight part phenyl glycidyl ether and the appropriate Ricinate, the silane coupling agent that add the dimeracid of the carbon 12 of 0.35 weight part are under 400 revs/min, to disperse 0.5 hour at rotating speed again;
1.2 secondly, adds 0.07 weight part process white, 0.07 weight part talcum powder, 0.1 weight part zinc phosphate under high-speed stirring, then adds 0.08 weight part sericite in powder to carry out 800 revs/min and disperse 1 hour;
1.3 is last, then 300 revs/min of stirring at low speed, adds all the other auxiliary agents, stirs after 2 hours, with 80 mesh filter screens filtrations, makes A component.
2, the preparation of B component
In another stainless charging basket, first add 1 parts by weight of cardanol modified phenolic amine, 0.5 weight part fatty polyamide and 0.2 weight part phenyl glycidyl ether, within 30 minutes, make B component by dispersion machine dispersed with stirring.
3, the mixing of A, B component
By A component and B component, the two mixes by weight 10:7, then carries out application.
Embodiment 2-5
Its A component and B component preparation method, with embodiment 1, fill a prescription as follows:
The formula (in parts by weight) of embodiment 2-4
* adjuvant used (wetting dispersing agent, defoamer, silane coupling agent, flow agent) is appropriate, embodiment 2, embodiment 3:A:B=10:7; Embodiment 4: embodiment 5=10:6.
Its test result is in table 2.
The test result of table 2 embodiment 1-5
Above the specific embodiment of the present invention is illustrated, but the present invention is as limit, only otherwise depart from aim of the present invention, the present invention can also have various variations.
Claims (5)
1. the flexible epoxy anticorrosion coating of no-solvent type all weather construction, according to parts by weight meter, comprises A component and B component:
Wherein A component is by 0.3～0.5 part of glycidyl ester, 0.2～0.4 part of the sericite in powder of the dimeracid of 1 part of E-44 epoxy resin, carbon 12, and 0.15～0.3 part of composition of auxiliary agent;
B component is by 1 part of modified by cardanol phenolic aldehyde amine, 0.4～0.6 part of fatty polyamide, and phenyl glycidyl ether 0.1～0.3 part of composition.
2. coating according to claim 1, is characterized in that: described auxiliary agent is 0.01～0.09 part of 0.01～0.09 part of flow agent, 0.01～0.09 part of defoamer, 0.01～0.09 part of wetting dispersing agent and silane coupling agent.
3. a preparation method for the flexible epoxy anticorrosion coating of no-solvent type all weather construction as claimed in claim 1, is characterized in that, according to parts by weight meter, comprises the following steps:
(1) preparation of A component
(1.1), in stainless steel charging basket, add 1 weight part E-44, then add the phenyl glycidyl ether of glycidyl ester, 0.2～0.4 weight part of the dimeracid of the carbon 12 of 0.3～0.5 weight part and wetting dispersing agent, defoamer, silane coupling agent; Be to disperse about half an hour under 300～400 revs/min at rotating speed, make system even;
(1.2) then add 0.05～0.1 weight part process white, 0.05～0.1 weight part talcum powder,, 0.05～0.1 weight part zinc phosphate; Add 0.05～0.2 weight part sericite in powder, high-speed stirring, disperses 1 hour;
(1.3) stirring at low speed again, adds all the other auxiliary agents, stirs after 2 hours, filters with 80 mesh filter screens, so become A component, sealing is stored;
(2) preparation of B component
B component is by 1 parts by weight of cardanol modified phenolic amine, 0.4～0.6 weight part fatty polyamide and 0.1～0.3 weight part phenyl glycidyl ether, obtains B component by dispersion machine dispersed with stirring after 30 minutes;
(3) mixing of A, B component
By A component and B component, the two mixes by weight 10:6～10:7, then carries out application.
4. preparation method according to claim 3, is characterized in that: in step 1.2, the rotating speed of high-speed stirring is 800 revs/min.
5. preparation method according to claim 3, is characterized in that: in step 1.3, the rotating speed of stirring at low speed is 300 revs/min.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105907242A (en) * | 2016-05-20 | 2016-08-31 | 南通万邦采涂料有限公司 | Low-temperature cured epoxy resin anticorrosive coating |
| CN106189689A (en) * | 2016-07-19 | 2016-12-07 | 马晓洁 | A kind of graphene-based anti-electromagnetic-radiation bicomponent epoxy resin coating |
| CN106752689A (en) * | 2016-11-30 | 2017-05-31 | 深圳市创智成功科技有限公司 | Paints Curing under Water and preparation method thereof |
| CN106833292A (en) * | 2017-03-14 | 2017-06-13 | 科兰建筑材料（马鞍山）有限公司 | A kind of low-viscosity solvent-free epoxy resin varnish and preparation method |
| CN110484095A (en) * | 2019-08-28 | 2019-11-22 | 厦门双瑞船舶涂料有限公司 | One kind thick can apply underwater curing durably anticorrosion paint and preparation method thereof |
| CN112300656A (en) * | 2019-11-15 | 2021-02-02 | 上海溧文信息科技有限公司 | Environment-friendly two-component epoxy coating and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105907242A (en) * | 2016-05-20 | 2016-08-31 | 南通万邦采涂料有限公司 | Low-temperature cured epoxy resin anticorrosive coating |
| CN106189689A (en) * | 2016-07-19 | 2016-12-07 | 马晓洁 | A kind of graphene-based anti-electromagnetic-radiation bicomponent epoxy resin coating |
| CN106752689A (en) * | 2016-11-30 | 2017-05-31 | 深圳市创智成功科技有限公司 | Paints Curing under Water and preparation method thereof |
| CN106833292A (en) * | 2017-03-14 | 2017-06-13 | 科兰建筑材料（马鞍山）有限公司 | A kind of low-viscosity solvent-free epoxy resin varnish and preparation method |
| CN110484095A (en) * | 2019-08-28 | 2019-11-22 | 厦门双瑞船舶涂料有限公司 | One kind thick can apply underwater curing durably anticorrosion paint and preparation method thereof |
| CN110484095B (en) * | 2019-08-28 | 2021-04-09 | 厦门双瑞船舶涂料有限公司 | Thick-coating underwater curing long-acting anticorrosive coating and preparation method thereof |
| CN112300656A (en) * | 2019-11-15 | 2021-02-02 | 上海溧文信息科技有限公司 | Environment-friendly two-component epoxy coating and preparation method thereof |
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Address after: 201515, No. 738, Golden Ring Road, Jinshan Wei Town, Shanghai, Jinshan District Patentee after: Shanghai chase exhibition curtain new energy-saving materials Limited by Share Ltd Address before: 200540 Shanghai City, Jinshan District Jinshanwei town old Weiqing Road No. 1089 Building 1 room 1124 Patentee before: Shanghai Datong Paint Chemical Co., Ltd. |
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Granted publication date: 20160824 Termination date: 20201231 |