CN102766393A - Low surface treatment type solventless coating, preparation method and applications thereof - Google Patents
Low surface treatment type solventless coating, preparation method and applications thereof Download PDFInfo
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- CN102766393A CN102766393A CN2012102957278A CN201210295727A CN102766393A CN 102766393 A CN102766393 A CN 102766393A CN 2012102957278 A CN2012102957278 A CN 2012102957278A CN 201210295727 A CN201210295727 A CN 201210295727A CN 102766393 A CN102766393 A CN 102766393A
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Abstract
The invention discloses a low surface treatment type solventless coating, a preparation method and applications thereof. The low surface treatment type solventless coating is characterized in that raw materials of the coating include a bisphenol A type epoxy resin, dimer acid bis-diglycidyl ester, a reactive diluent, pigments, fillers, a curing agent, a rheological additive and other additives. The preparation method includes uniformly mixing the bisphenol A type epoxy resin, the dimer acid bis-diglycidyl ester and a part of the reactive diluent, adding other additives to be mixed uniformly, adding the fillers, the pigments and the rheological additive to be mixed uniformly, adding a non-toxic physical rust resisting pigment, uniformly mixing to obtain a first component, and mixing the curing agent with the residual reactive diluent to obtain a second component. During usage, the first component and the second component are uniformly mixed to obtain a mixture, and the mixture is sprayed on materials required to be coated in an airless spraying mode within 2 hours. The low surface treatment type solventless coating has the advantages of being good in tenacity, rapid in curing, environment-friendly, and capable of being coated on a wet surface and even a rusted surface.
Description
Technical field
The present invention relates to a kind of low surface treatment type solventless coatings, preparation method and application thereof, belong to solvent-free heavy duty system technical field.
Background technology
Solvent-free heavy duty system is one of important development of current China anticorrosive coating, and it is widely used in boats and ships, petrochemical industry, bridge, freight container, electric power railway, China's key areas such as construction steel structure.Yet also there are some problems in solvent-free heavy duty system at present in China: surface treatment requires high, and quantities is big, and the big multiple stiffness of employed epoxy type coatings is had a surplus, and toughness is not enough.The severe cold time; On the flat field of some marine engineerings that need make short work of such as drilling well often after application the same day will load and unload; Therefore require coating to meet these production requirements by fast setting, another importance is exactly can not contain harmful heavy metal in the used coating system.
Summary of the invention
Technical problem to be solved by this invention provides a kind of good toughness, curing speed is fast, and does not contain the solvent-free heavy duty system of heavy metal.
In order to achieve the above object, the invention provides a kind of low surface treatment type solventless coatings, it is characterized in that its raw material comprises the following component in parts by weight:
Bisphenol A type epoxy resin 30-40 part;
Dimeracid 2-glycidyl ester 10-15 part;
Reactive thinner 5-10 part;
Nontoxic physical rust-stabilising pigment 5-10 part;
First nontoxic type chemistry rust-stabilising pigment 5-10 part;
Second nontoxic type chemistry rust-stabilising pigment 5-7 part;
Nontoxic comprehensive rust-stabilising pigment 5-10 part;
Filler 5-10 part;
Solidifying agent 15-20 part;
Auxiliary rheological agents 1-3 part;
Other auxiliary agent 3-5 part.
Preferably, described reactive thinner is a cardanol glycidyl ether.
Preferably, described nontoxic physical rust-stabilising pigment is an iron mica.
Preferably, described first nontoxic type chemistry rust-stabilising pigment is a phosphorus sulphur calcium.
Preferably, described second nontoxic type chemistry rust-stabilising pigment is an Ion exchange anticorrosive pigment.
Preferably, described nontoxic comprehensive rust-stabilising pigment is a composite iron-titanium powder.
Preferably, described filler is process white, talcum powder or both mixtures.
Further, the order number of described process white is 800 orders.
Preferably, described solidifying agent is the modified by cardanol phenolic aldehyde amine.
Preferably, described other auxiliary agent is flow agent, skimmer, wetting dispersing agent and silicone couplet.
Further, the consumption of said flow agent is 0.5-1 part.
Further, the consumption of said skimmer is 0.3-0.5 part.
Further, the consumption of said wetting dispersing agent is 0.2-0.4 part.
Further, the consumption of said silicone couplet is 1-3 part.
The present invention also provides the preparation method of above-mentioned low surface treatment type solventless coatings, it is characterized in that concrete steps are following:
The first step: the reactive thinner of bisphenol A type epoxy resin, dimeracid 2-glycidyl ester and 50%-60% weight percent is added in the container in proportion, mix;
Second step: at rotating speed is under the agitation condition of 400-600rpm, in the mixture that the first step obtains, adds other auxiliary agent, stirs 0.5-1 hour, mixes;
The 3rd step: at rotating speed is under the agitation condition of 1500-2000rpm; In second mixture that obtain of step, add filler, first nontoxic type chemistry rust-stabilising pigment, second nontoxic type chemistry rust-stabilising pigment, nontoxic comprehensive rust-stabilising pigment and stream and hand over auxiliary agent, stirred 0.5-1 hour;
The 4th step: after the 3rd mixture that obtain of step is ground to fineness and is not more than 30 μ m with sand mill, add nontoxic physical rust-stabilising pigment, after mixing, obtain first component;
The 5th step: with solidifying agent and remaining activity mixing diluents, high-speed stirring after mixing, obtains second component.
The present invention also provides the application of above-mentioned low surface treatment type solventless coatings, it is characterized in that, after during use above-mentioned first component and second component being mixed, in 2 hours with airless spraying on the material that need apply.
Bisphenol A type epoxy resin among the present invention, its relative molecular mass is little, and cross-linking density is big; And hydroxy radical content is less in its molecular chain, so the water-resistance property of coating of its formation is just strong, though its hydroxy radical content is low; So making Rong, catalysis just weakens; But can prolong the gel time with solidifying agent, the mixed coating usage period can be prolonged, so just help coating decoration.
Dimeric dibasic acid 2-glycidyl ester among the present invention is to play toughening effect at coating, general epoxy coating rigidity foot, and toughness is owed; The inventor has screened various flexibilizer; From with the epoxy resin excellent compatibility and reduce corresponding cost consideration,, participate in curing reaction again because of it contains ester bond; Make epoxy resin obtain intrinsic toughening, so the toughness that can remain on low temperature or film when cold.
The present invention uses reactive thinner, has replaced organic solvent, and participates in curing reaction; Become a part of filming, reduced the pollution to environment like this, used reactive thinner is a cardanol glycidyl ether; Its structure is similar with solidifying agent modified by cardanol phenolic aldehyde amine with bisphenol A type epoxy resin; So extremely good consistency is arranged, epoxy resin and solidifying agent are fully launched, their reactive group so can obtain more fully and more perfectly contact and react in this reactive thinner; And reaching maximum effective cross-linking density, the various resistances that are beneficial to coating improve.And since the effect of this reactive thinner, also convenient coating decoration.
Pigment, filler that the present invention adopts do not have harmful heavy metal, and pigment all is dissimilar functional type rust-stabilising pigments, iron mica wherein; Be nontoxic type physics rust-stabilising pigment, it is laminate structure but high covering power is arranged, and this shaped particle can be to the overlapping arrangement of parallel; In coating, form the cloudy retaining layer of an inertia; Can reduce atmosphere effectively, water, ultraviolet rays etc. are to the erosion of iron structure; Because iron mica has the intense absorption effect to ultraviolet ray, is that strong anti-uv-ray is arranged so can make coating; And calcium phosphate is a kind of nontoxic type chemistry rust-stabilising pigment, is a kind of new and effective environmentally friendly rust-stabilising pigment; It does not contain harmful heavy metal, but rustless property can be suitable with red lead, and it is yellow to be superior to the zinc network; Tripolyphosphate two hydrogen esters, zinc oxide and zn phosphate class rust-stabilising pigment, it can form one deck passive film on the metallic surface; And stoped corrosion of metal; This tertiary iron phosphate that generates can stop up fall on the steel surface by the aperture on the purification membrane that ironic hydroxide constituted, reduced the perviousness of filming, thereby improved iron and steel passivation degree; Another kind of nontoxic type chemistry rust-stabilising pigment---Ion exchange anticorrosive pigment also is the friendly type rust-stabilising pigment of a kind of novel environmental, and this is a kind of silica gel of calcium ions exchange, this kind rust-stabilising pigment in coating when the corrodibility ionogen gets into; It will be intercepted and captured corrosive ion on the silica gel surface, and the calcium ion generation exchange interaction with being adsorbed on the silica gel surface discharges antirust ion; This rustproof layer is deposited on metal/coating interface, plays iris action and has protected ground, and strengthened coating adhesion; It has the advantage of a uniqueness to be, the inhibition ion discharges by " need ", can fully effectively utilize; And silica gel does not dissolve in coating, and its permutoid reaction occurs in the oxide carrier surface with the molecular level level, does not influence the pigment form; Can keep coating complete muchly, play the shielding corrosion-resisting function; Nontoxic comprehensive rust-stabilising pigment composite iron-titanium powder also is a kind of environmentally friendly rust-stabilising pigment, and it is introduced through pretreated silica-based by several kinds of different phosphoric acid salt of form (not stanniferous, zinc) under certain condition; Titanium-based oxide and yttrium oxide etc. are received the material split through mechanically mixing, disperse, and compound preparing, it is light yellow; During the system lacquer, cooperate appropriate colouring pigment can be deployed into sky blue, grass green; Bright orange, any color such as iron oxide red, its protection against corrosion mechanism is; The reaction of phosphate anion in the one of which carrier and the iron molecule of steel surface generates the tertiary iron phosphate complex salt, and it is securely attached to steel surface, thereby has protected iron and steel; It two is that the ferrotitanium powder is that suitable affinity and stronger sticking power are arranged to iron and steel, can directly be oxidized to one deck purification membrane at steel surface, thereby stop the galvanic corrosion generation; It three is that nano-powder material has changed the one-piece construction of filming to a great extent, and consumption is little, to make smooth coating, and densification and free of pinholes and pore have intercepted the erosion to steel surface such as water, cl ions and oxygen effectively is so its rust-proof effect is very strong; Process white that the filler alternative costs are lower or talcum powder, filler can make coating application convenient and increase the plumpness etc. of coating.
Solidifying agent among the present invention adopts the modified by cardanol phenolic aldehyde amine; This is a kind of solidifying agent that is the basis with the C-15 straight chain substituted phenol of band unsaturated double-bond, and phenyl ring in its structure and bisphenol A type epoxy resin have good consistency, can reduce the viscosity of coating; Outstanding perviousness is arranged; Institute's hydroxyl can increase the polarity of solidifying agent. and to the wettability and the cementability enhancing of ground, can be used for low other steel surface of surface treatment level, and make solidified film coated surface smooth; Phenolic hydroxyl group in its structure is the epoxy resin cure catalyst for reaction, can be at fast setting under the low humidity; And the C-15 straight chain of its unsaturated double-bond can provide intrinsic toughening and excellent water tolerance to system, and the curing reaction of system is had initial space steric effect. make this solvent-free system still have good working life simultaneously quick-setting; The characteristics of this solidifying agent are to construct at moist surface.
The present invention also can add different auxiliary agents according to the performance requriements of coating, and auxiliary rheological agents can improve the workability of system and promote coat-thickness; Flow agent makes coatingsurface bright and clean, and is level and smooth; Skimmer makes space, coating sky, densification, the no spot flaw in surface; Wetting dispersing agent makes pigment, filler wetting for base-material institute better, thereby strengthens the various resistances of system; Silicone couplet ability enhancement coating is to the sticking power of metal substrate.
The present invention can form tough and tensile on the surface that need protect for a long time and long lasting anticorrosive coating layer is arranged, and environmental pollution is little, adopts comprehensive anticorrosive such as chemical physics erosion mechanism simultaneously, and suitable metal substrate particularly steel surface is made the usefulness of long-term protection against corrosion.
The present invention compared with prior art, its advantage is:
1) can keep tenacity under the low temperature;
2) solidify fast;
3) can even be with application on the rust surface at moist surface;
4) do not contain harmful heavy metal;
5) do not contain VOC, environmentally friendly.
Embodiment
For making the present invention more obviously understandable,, elaborate as follows now with preferred embodiment.
Raw material among the embodiment 1-3 and production firm/trade mark is tabulated as follows:
Table 1
Embodiment 1
The first step: 30kg bisphenol A type epoxy resin, 10kg dimeracid 2-glycidyl ester and 3kg cardanol glycidyl ether are added in the container, mix;
Second step: under the agitation condition, in the mixture that the first step obtains, add 1.5kg silicone couplet, 0.4kg flow agent, 0.3kg skimmer and 0.3kg wetting dispersing agent successively, mix;
The 3rd step: under the agitation condition, go on foot adding 5kg process white, 6kg calcium phosphate, 5kg Ion exchange anticorrosive pigment, 6kg composite iron-titanium powder and 2kg auxiliary rheological agents in the mixture that obtains, stirred 0.5 hour with impeller second;
The 4th step: the mixture that the 3rd step was obtained after 0.5 hour, adds the 6kg iron mica with the sand mill grinding, after mixing, obtains first component;
The 5th step: 17kg modified by cardanol phenolic aldehyde amine is mixed with the 3kg cardanol glycidyl ether, and high-speed stirring after mixing, obtains second component;
The 6th step: during use, will above-mentioned first component and after second component mixes, in 30 minutes with airless spraying on the steel plate after St2 or the Sa2 processing.
Embodiment 2
The first step: 35kg bisphenol A type epoxy resin, 13kg dimeracid 2-glycidyl ester and 5kg cardanol glycidyl ether are added in the container, mix;
Second step: under the agitation condition, in the mixture that the first step obtains, add 2kg silicone couplet, 0.4kg flow agent, 0.4kg skimmer and 0.3kg wetting dispersing agent successively, mix;
The 3rd step: under the agitation condition, go on foot adding 8kg talcum powder, 7kg calcium phosphate, 6kg Ion exchange anticorrosive pigment, 7kg composite iron-titanium powder and 2kg auxiliary rheological agents in the mixture that obtains, stirred 0.5 hour with impeller second;
The 4th step: the mixture that the 3rd step was obtained after 0.5 hour, adds the 7kg iron mica with the sand mill grinding, after mixing, obtains first component;
The 5th step: 19kg modified by cardanol phenolic aldehyde amine is mixed with the 4kg cardanol glycidyl ether, and high-speed stirring after mixing, obtains second component;
The 6th step: during use, will above-mentioned first component and after second component mixes, in 30 minutes with airless spraying on the steel plate after St2 or the Sa2 processing.
Embodiment 3
The first step: 38kg bisphenol A type epoxy resin, 14kg dimeracid 2-glycidyl ester and 6kg cardanol glycidyl ether are added in the container, mix;
Second step: under the agitation condition, in the mixture that the first step obtains, add 2.5kg silicone couplet, 0.4kg flow agent, 0.4kg skimmer and 0.3kg wetting dispersing agent successively, mix;
The 3rd step: under the agitation condition, go on foot adding 9kg process white, 9kg calcium phosphate, 7kg Ion exchange anticorrosive pigment, 9kg composite iron-titanium powder and 2kg auxiliary rheological agents in the mixture that obtains, stirred 0.5 hour with impeller second;
The 4th step: the mixture that the 3rd step was obtained after 0.5 hour, adds the 9kg iron mica with the sand mill grinding, after mixing, obtains first component;
The 5th step: 20kg modified by cardanol phenolic aldehyde amine is mixed with the 4kg cardanol glycidyl ether, and high-speed stirring after mixing, obtains second component;
The 6th step: during use, will above-mentioned first component and after second component mixes, in 30 minutes with airless spraying on the steel plate after St2 or the Sa2 processing.
The steel plate that is coated with low surface treatment type solventless coatings that embodiment 1-3 makes is done performance test, and test result is tabulated as follows:
Table 2
Claims (16)
1. one kind low surface treatment type solventless coatings is characterized in that, its raw material comprises the following component in parts by weight:
Bisphenol A type epoxy resin 30-40 part;
Dimeracid 2-glycidyl ester 10-15 part;
Reactive thinner 5-10 part;
Nontoxic physical rust-stabilising pigment 5-10 part;
First nontoxic type chemistry rust-stabilising pigment 5-10 part;
Second nontoxic type chemistry rust-stabilising pigment 5-7 part;
Nontoxic comprehensive rust-stabilising pigment 5-10 part;
Filler 5-10 part;
Solidifying agent 15-20 part;
Auxiliary rheological agents 1-3 part;
Other auxiliary agent 3-5 part.
2. low surface treatment type solventless coatings according to claim 1 is characterized in that described reactive thinner is a cardanol glycidyl ether.
3. low surface treatment type solventless coatings according to claim 1 is characterized in that described nontoxic physical rust-stabilising pigment is an iron mica.
4. low surface treatment type solventless coatings according to claim 1 is characterized in that, described first nontoxic type chemistry rust-stabilising pigment is a phosphorus sulphur calcium.
5. low surface treatment type solventless coatings according to claim 1 is characterized in that, described second nontoxic type chemistry rust-stabilising pigment is an Ion exchange anticorrosive pigment.
6. low surface treatment type solventless coatings according to claim 1 is characterized in that described nontoxic comprehensive rust-stabilising pigment is a composite iron-titanium powder.
7. low surface treatment type solventless coatings according to claim 1 is characterized in that described filler is process white, talcum powder or both mixtures.
8. low surface treatment type solventless coatings according to claim 7 is characterized in that the order number of described process white is 800 orders.
9. low surface treatment type solventless coatings according to claim 1 is characterized in that described solidifying agent is the modified by cardanol phenolic aldehyde amine.
10. low surface treatment type solventless coatings according to claim 1 is characterized in that described other auxiliary agent is flow agent, skimmer, wetting dispersing agent and silicone couplet.
11. low surface treatment type solventless coatings according to claim 10 is characterized in that the consumption of said flow agent is 0.5-1 part.
12. low surface treatment type solventless coatings according to claim 10 is characterized in that the consumption of said skimmer is 0.3-0.5 part.
13. low surface treatment type solventless coatings according to claim 10 is characterized in that the consumption of said wetting dispersing agent is 0.2-0.4 part.
14. low surface treatment type solventless coatings according to claim 10 is characterized in that the consumption of said silicone couplet is 1-3 part.
15. the preparation method of the described low surface treatment type solventless coatings of claim 1 is characterized in that concrete steps are following:
The first step: the reactive thinner of bisphenol A type epoxy resin, dimeracid 2-glycidyl ester and 50%-60% weight percent is added in the container in proportion, mix;
Second step: at rotating speed is under the agitation condition of 400-600rpm, in the mixture that the first step obtains, adds other auxiliary agent, stirs 0.5-1 hour, mixes;
The 3rd step: at rotating speed is under the agitation condition of 1500-2000rpm; In second mixture that obtain of step, add filler, first nontoxic type chemistry rust-stabilising pigment, second nontoxic type chemistry rust-stabilising pigment, nontoxic comprehensive rust-stabilising pigment and stream and hand over auxiliary agent, stirred 0.5-1 hour;
The 4th step: after the 3rd mixture that obtain of step is ground to fineness and is not more than 30 μ m with sand mill, add nontoxic physical rust-stabilising pigment, after mixing, obtain first component;
The 5th step: with solidifying agent and remaining activity mixing diluents, high-speed stirring after mixing, obtains second component.
16. the application of the described low surface treatment type solventless coatings of claim 15 is characterized in that, after during use said first component and said second component being mixed, in 2 hours with airless spraying on the material that need apply.
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Cited By (11)
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| CN103275598A (en) * | 2013-05-17 | 2013-09-04 | 国家电网公司 | Heavy-anticorrosive epoxy finishing coat and preparation method thereof |
| CN103805025A (en) * | 2013-12-31 | 2014-05-21 | 上海大通涂料化工有限公司 | Solvent-free flexible epoxy anticorrosive coating applicable to all-weather construction |
| CN104356883A (en) * | 2014-11-30 | 2015-02-18 | 徐妍玲 | Preparation method of epoxy corrosion-resistant and anti-mildew coating |
| CN104513586B (en) * | 2013-09-30 | 2016-09-28 | 石家庄利鼎电子材料有限公司 | A kind of solvent-free railway screw spike Corrosion resisting paint without need of cleaning rust and preparation method thereof |
| CN106189697A (en) * | 2016-07-24 | 2016-12-07 | 李水金 | A kind of solvent-free low surface treatment paint |
| CN107118665A (en) * | 2017-06-19 | 2017-09-01 | 无锡华东锌盾科技有限公司 | Low surface treatment paint and preparation method thereof |
| CN110862746A (en) * | 2019-11-28 | 2020-03-06 | 中国石油化工股份有限公司 | Low-surface-treatment solvent-free epoxy coating and preparation and application methods thereof |
| CN111662618A (en) * | 2020-05-08 | 2020-09-15 | 江苏兰陵高分子材料有限公司 | Light-color high-solid-content epoxy micaceous iron intermediate paint and preparation method thereof |
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| KR20210047777A (en) * | 2019-10-22 | 2021-04-30 | 한국조선해양 주식회사 | solvent-free epoxy type paint composition and offshore structure comprising coating film of thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103275598A (en) * | 2013-05-17 | 2013-09-04 | 国家电网公司 | Heavy-anticorrosive epoxy finishing coat and preparation method thereof |
| CN103275598B (en) * | 2013-05-17 | 2015-07-08 | 国家电网公司 | Heavy-anticorrosive epoxy finishing coat and preparation method thereof |
| CN104513586B (en) * | 2013-09-30 | 2016-09-28 | 石家庄利鼎电子材料有限公司 | A kind of solvent-free railway screw spike Corrosion resisting paint without need of cleaning rust and preparation method thereof |
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| CN103805025B (en) * | 2013-12-31 | 2016-08-24 | 上海大通涂料化工有限公司 | The flexible epoxy anticorrosion coating of no-solvent type all weather construction |
| CN104356883A (en) * | 2014-11-30 | 2015-02-18 | 徐妍玲 | Preparation method of epoxy corrosion-resistant and anti-mildew coating |
| CN106189697A (en) * | 2016-07-24 | 2016-12-07 | 李水金 | A kind of solvent-free low surface treatment paint |
| CN107118665A (en) * | 2017-06-19 | 2017-09-01 | 无锡华东锌盾科技有限公司 | Low surface treatment paint and preparation method thereof |
| KR20210047777A (en) * | 2019-10-22 | 2021-04-30 | 한국조선해양 주식회사 | solvent-free epoxy type paint composition and offshore structure comprising coating film of thereof |
| KR102339245B1 (en) * | 2019-10-22 | 2021-12-13 | 한국조선해양 주식회사 | solvent-free epoxy type paint composition and offshore structure comprising coating film of thereof |
| CN110862746A (en) * | 2019-11-28 | 2020-03-06 | 中国石油化工股份有限公司 | Low-surface-treatment solvent-free epoxy coating and preparation and application methods thereof |
| CN111662618A (en) * | 2020-05-08 | 2020-09-15 | 江苏兰陵高分子材料有限公司 | Light-color high-solid-content epoxy micaceous iron intermediate paint and preparation method thereof |
| CN111662618B (en) * | 2020-05-08 | 2021-11-19 | 江苏兰陵高分子材料有限公司 | Light-color high-solid-content epoxy micaceous iron intermediate paint and preparation method thereof |
| CN111849301A (en) * | 2020-05-11 | 2020-10-30 | 上海船舶工艺研究所舟山船舶工程研究中心 | Bi-component solvent-free low-surface-treatment moisture-curing coating suitable for seawater splashing area and preparation method thereof |
| CN115466557A (en) * | 2022-10-18 | 2022-12-13 | 澜猫（天津）新材料科技有限公司 | Anti-rust and anti-corrosion primer and preparation method thereof |
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Application publication date: 20121107 |