CN104946129A - Polysiloxane heat-reflective topcoat and preparation method thereof - Google Patents
Polysiloxane heat-reflective topcoat and preparation method thereof Download PDFInfo
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- CN104946129A CN104946129A CN201510442209.8A CN201510442209A CN104946129A CN 104946129 A CN104946129 A CN 104946129A CN 201510442209 A CN201510442209 A CN 201510442209A CN 104946129 A CN104946129 A CN 104946129A
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Abstract
The invention provides a polysiloxane heat-reflective topcoat and a preparation method thereof. The polysiloxane heat-reflective topcoat comprises a component A and a component B, and the weight ratio of the component A to the component B is 8:(1-1.5); the component A comprises the following ingredients by weight: 30-40 parts of polysiloxane resin, 3-8 parts of a thermal insulation material, 0.6-0.9 part of a stabilizer, 25-48 parts of a mixed solvent, 0.2-0.5 part of a dispersant, 17-33 parts of an anti-aging pigment and an anti-aging filler, and 0.2-0.5 part of an anti-settling agent; the component B comprises the following ingredients by weight: 60-70 parts of a curing agent and 18-35 parts of a curing agent solvent. The polysiloxane heat-reflective topcoat is high in ageing-resistant performance, weather resistance and chemical resistance, has a heat reflection function, can be suitable for various construction methods, and is good in recoatability and excellent in cost performance; besides, external corrosion protection of the surface of coated steel is achieved, a lot of coating expenditures can be reduced, and the service life is prolonged.
Description
Technical field
The present invention relates to a kind of polysiloxane heat reflection finish paint and preparation method thereof, belong to technical field of coatings.
Background technology
In anticorrosion of steel structure engineering, coating is main, most economical effective anti-corrosion method always.The corrosion outstanding behaviours of current boats and ships and general steel construction is internal structure and the destruction being exposed to the position in the atmospheric environment such as sunlight and salt fog.
The coating that domestic maintenance steel construction and cabin adopt main still alkyd and epoxy ester rust-proofing primer, and ship housing position adopts alkydpaints mostly.The rust-proofing primer of these kinds and finish paint, because it is water-fast, weather-proof, chemical resistance is poor, only have the protection period of 1-2, at harsh and unforgiving environments even less than half a year.
In large anticorrosion engineering, progressively bring into use chlorinated rubber, epoxy series coating, but epoxy coating is generally only applicable to interiorly anticorrosionly make priming paint, because easy efflorescence, weather resistance are not good, does not make outer antisepsis finishing paint and uses; Chlorinated rubber coating storge quality is stable not, and chlorinated rubber is generally that China's natural rubber natural resources shortage, needs a large amount of import every year, so the coating cost made is higher, exceed more than 80% than alcohol acids coating with natural rubber synthesis; In addition, owing to adopting CC1
4the technique that equal solvent produces chlorinated rubber causes the destruction of atmospheric ozone layer and the carcinogenesis to human body, its production is restricted, the several large factory in Europe stops production in succession, import chlorinated rubber price is caused to raise up, developed country specifies the production forbidding it for 2000, and China is also in the production of restriction chlorinated rubber in 2010.External actively find its alternative articles for use, the application of vinyl chloride-vinyl acetate resin, MP chlorinated polyether resin and polyorganosiloxane resin that wherein copolymerization method is produced expands gradually.But MP resin price is too high, and the water tolerance of vinyl chloride-vinyl acetate resin is not good enough.
Domestic maintenance steel construction and boats and ships exterior string, be all generally adopt alkyd or chlorinated rubber class paint, top grade then selects epoxy, fluorocarbon resin.The former is antirust, salt spray resistance, guarantor's light tint retention are poor, though the latter has large progress, compared with the factors such as efflorescence all can not have fabulous salt spray resistance effect of heat insulation with the full nondiscoloration of the paint film of siloxanes.
Summary of the invention
In view of the defect that above-mentioned prior art exists, the object of the invention is to propose a kind of polysiloxane heat reflection finish paint and preparation method thereof, this polysiloxane heat reflection finish paint can solve an outer protection against corrosion difficult problem for steel surface application, and there is function of heat reflection, effectively can reduce use temperature, weathering resistance, chemical-resistant are good, can suitable various constructional method, and application is not subject to seasonal restrictions.
Object of the present invention is achieved by the following technical programs:
A kind of polysiloxane heat reflection finish paint, comprise first component and second component, the weight ratio of first component and second component is 8:1-1.5; Wherein,
With parts by weight, first component comprises: polyorganosiloxane resin 30-40 weight part, lagging material 3-8 weight part, stablizer 0.6-0.9 weight part, mixed solvent 25-48 weight part, dispersion agent 0.2-0.5 weight part, ageing-resistant color stuffing 17-33 weight part, anti-settling agent 0.2-0.5 weight part;
With parts by weight, second component comprises: solidifying agent 60-70 weight part, solidifying agent solvent 18-35 weight part.
In above-mentioned polysiloxane heat reflection finish paint, preferably, described lagging material comprises one or more the combination in aluminium powder and other lagging materials.
In above-mentioned polysiloxane heat reflection finish paint, preferably, described stablizer is silicone based, such as siloxanes, but is not limited thereto.
In above-mentioned polysiloxane heat reflection finish paint, preferably, described dispersion agent is the unsaturated polycarboxylic acid polymers of lower molecular weight (the auxiliary agent HX-4021 that Pentium Chemical Co., Ltd. of China produces, the wetting auxiliary agent be integrated, there is dispersion, wetting, anti-settling and stabilization), but be not limited thereto.
In above-mentioned polysiloxane heat reflection finish paint, preferably, described anti-settling agent is organobentonite, but is not limited thereto.
In above-mentioned polysiloxane heat reflection finish paint, preferably, with parts by weight, described mixed solvent comprises dimethylbenzene 10-20 weight part, butylacetate 5-8 weight part and butanone 10-20 weight part.
In above-mentioned polysiloxane heat reflection finish paint, preferably, with parts by weight, described ageing-resistant color stuffing comprises import Rutile type Titanium Dioxide 10-15 weight part, mica 3-8 weight part and barium sulfate 4-10 weight part.
In above-mentioned polysiloxane heat reflection finish paint, preferably, described solidifying agent comprises aliphatics isocyanic acid solidifying agent and/or aminosilane hardener.
In above-mentioned polysiloxane heat reflection finish paint, preferably, with parts by weight, described solidifying agent solvent comprises butylacetate 8-15 weight part and butanone 10-20 weight part.
Present invention also offers the preparation method of above-mentioned polysiloxane heat reflection finish paint, comprise the steps:
The preparation of first component: added by polyorganosiloxane resin in mixed solvent, stirs 1-2 hour, makes polyorganosiloxane resin dispersing and dissolving; Add lagging material, stablizer, dispersion agent, ageing-resistant color stuffing again, stir, then grind (such as with sand mill grinding, milling time can be 3-4 hour) to suitable fineness (30-40 μm) and viscosity (6P); Finally add anti-settling agent with moderate-speed mixer, obtain first component;
The preparation of second component: solidifying agent is allocated together with solidifying agent solvent evenly, obtain second component;
The preparation of polysiloxane heat reflection finish paint: first component and second component are mixed in proportion, obtains polysiloxane heat reflection finish paint.
In above-mentioned preparation method, be ground to the coating performance that suitable fineness and viscosity can improve finish paint.Above-mentioned moderate-speed mixer adds in the step of anti-settling agent, and use instrument dispersed with stirring, the middling speed of instrument mixes dissolving use, is used as homogeneous dispersion at a high speed, chooses speed here, its objective is and anti-settling agent is dissolved.
The present invention also provides a kind of method for anticorrosion treatment, and it uses above-mentioned polysiloxane heat reflection finish paint, and be included in the step in coated upper coating finish 1-2 road, wherein, the coating thickness of per pass finish paint is 80-100 μm.
Polysiloxane heat reflection finish paint of the present invention is that two-pack makes outer antisepsis finishing paint, and its performance characteristics is:
1, this coating has outstanding resistance to atmospheric aging, UV degradation, ozone resistance, not easy to change, and resin structure is stablized.
2, be coated with in the paint film that obtains that (siloxane polymer molecular structure stabilized has fine reflex action, then adds lagging material containing special reflection and lagging material.Lagging material is as aluminium powder etc.), isolated heat conducting effect can be played to infrared rays, reach heat insulation functional coating.
3, this finish paint has two-pack, and the paint film that coating obtains is full, gloss is high, easy construction.
4, become thickness together, generally only need application 1-2 road to complete construction, application is not subject to seasonal restrictions, without the longest construction space requirement.
5, have extremely strong sticking power and excellent mechanical and physical performance, snappiness height is good, excellent in cushion effect, and wear resisting property is unique.
6, recoat and toolability good, easy to maintenance; Can use with the coatings system such as epoxy, urethane, fluorine carbon, vinylformic acid, have excellent ply adhesion.
7, salt spray resistance, water-fast and alternation of wetting and drying performance is good.
Outstanding effect of the present invention is:
Polysiloxane heat reflection finish paint ageing resistance of the present invention, weathering resistance, chemical-resistant are good, and film, under chronic sun tans by the sun, nondiscoloration, not yellowing, not efflorescence, not to come off.Adopt this coating can solve an outer protection against corrosion difficult problem for steel surface application, and there is function of heat reflection, effectively can reduce use temperature, be applicable to various constructional method, application is not subject to seasonal restrictions, without the longest coating decoration space requirement, recoatability is good, and the ratio of performance to price is excellent, a large amount of application funds can be saved, increase the service life.
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and beneficial effect, existing following detailed description is carried out to technical scheme of the present invention, but can not be interpreted as to of the present invention can the restriction of practical range.Experimental technique described in following embodiment, if no special instructions, is ordinary method; Described reagent and material, if no special instructions, all can obtain from commercial channels.
Embodiment
The present embodiment provides a kind of polysiloxane heat reflection finish paint, and this finish paint comprises first component and second component, and the weight ratio of first component and second component is 8:1; Wherein,
With parts by weight, first component comprises: polyorganosiloxane resin 30 weight part, lagging material (aluminium powder and other lagging materials, by arbitrarily than) 5 weight parts, stablizer (siloxanes) 0.8 weight part, mixed solvent (dimethylbenzene 15 weight part, butylacetate 8 weight part, butanone 10 weight part), dispersion agent (Methoxy acetic acid propyl ester) 0.2 weight part, ageing-resistant face, filler (import Rutile type Titanium Dioxide 12 weight part, mica 5 weight part and barium sulfate 6 weight part), anti-settling agent (organobentonite) 0.2-0.5 weight part;
With parts by weight, second component comprises: solidifying agent (aliphatic isocyanates HDI tripolymer) 65 weight parts, solidifying agent solvent (butylacetate 8 weight part, butanone 12 weight part).
The polysiloxane heat reflection finish paint of the present embodiment is preparation like this:
The preparation of first component: all added in mixed solvent by polyorganosiloxane resin, stirs 1-2 hour, makes the whole dispersing and dissolving of polyorganosiloxane resin; Add lagging material, stablizer, dispersion agent, ageing-resistant face, filler again, stir, then grind (such as grinding with sand mill) to suitable fineness (30-40 μm) and viscosity (6P); Finally add anti-settling agent with moderate-speed mixer, obtain first component;
The preparation of second component: solidifying agent is allocated together with solidifying agent solvent evenly, obtain second component;
The preparation of polysiloxane heat reflection finish paint: first component and second component are mixed in proportion, obtains polysiloxane heat reflection finish paint.
Test the polysiloxane heat reflection finish paint of the present embodiment, its key technical indexes is as shown in table 1.
Table 1
As seen from the above table, the polysiloxane heat reflection finish paint ageing resistance of the present embodiment, weathering resistance, chemical-resistant are good, and salt spray resistance, water-fast and alternation of wetting and drying performance is good;
The polysiloxane heat reflection finish paint of the present embodiment has extremely strong sticking power and excellent mechanical and physical performance;
The polysiloxane heat reflection finish paint of the present embodiment can solve an outer protection against corrosion difficult problem for steel surface application, and has function of heat reflection;
The polysiloxane heat reflection finish paint energy usable reflection ultraviolet of the present embodiment, can bulkhead cold and hot convection current, thus be not coated with compared with this coating, there is the very large temperature difference.Adopt this finish paint effectively can reduce use temperature, be applicable to various constructional method, application is not subject to seasonal restrictions, without the longest coating decoration space requirement, recoatability is good, becomes thickness together, few by paint amount, the ratio of performance to price is excellent, can save a large amount of application funds, increase the service life.
This product is ranked first in Hainan and domestic and international seven producers are tested, Be very effective, can actual cooling 2-4 DEG C in 48 hours external temperatures 45 DEG C round the clock tracking monitor, refers to following table 2.
Table 2
Claims (10)
1. a polysiloxane heat reflection finish paint, comprises first component and second component, and the weight ratio of first component and second component is 8:1-1.5; Wherein,
With parts by weight, first component comprises: polyorganosiloxane resin 30-40 weight part, lagging material 3-8 weight part, stablizer 0.6-0.9 weight part, mixed solvent 25-48 weight part, dispersion agent 0.2-0.5 weight part, ageing-resistant color stuffing 17-33 weight part, anti-settling agent 0.2-0.5 weight part;
With parts by weight, second component comprises: solidifying agent 60-70 weight part, solidifying agent solvent 18-35 weight part.
2. polysiloxane heat reflection finish paint according to claim 1, is characterized in that: described lagging material comprises one or more the combination in aluminium powder and other lagging materials.
3. polysiloxane heat reflection finish paint according to claim 1, is characterized in that: described stablizer is silicone based; Preferably, described dispersion agent is unsaturated polycarboxylic acid polymers HX-4021; Preferably, described anti-settling agent is organobentonite.
4. polysiloxane heat reflection finish paint according to claim 1, is characterized in that: with parts by weight, and described mixed solvent comprises dimethylbenzene 10-20 weight part, butylacetate 5-8 weight part and butanone 10-20 weight part.
5. polysiloxane heat reflection finish paint according to claim 1, is characterized in that: with parts by weight, and described ageing-resistant color stuffing comprises Rutile type Titanium Dioxide 10-15 weight part, mica 3-8 weight part and barium sulfate 4-10 weight part.
6. polysiloxane heat reflection finish paint according to claim 1, is characterized in that: described solidifying agent comprises aliphatics isocyanic acid solidifying agent and/or aminosilane hardener.
7. polysiloxane heat reflection finish paint according to claim 6, is characterized in that, described solidifying agent is isocyanic ester.
8. polysiloxane heat reflection finish paint according to claim 1, is characterized in that: with parts by weight, and described solidifying agent solvent comprises butylacetate 8-15 weight part and butanone 10-20 weight part.
9. the preparation method of the polysiloxane heat reflection finish paint described in any one of claim 1-8, comprises the steps:
The preparation of first component: added by polyorganosiloxane resin in mixed solvent, stirs 1-2 hour, makes polyorganosiloxane resin dispersing and dissolving; Add lagging material, stablizer, dispersion agent, ageing-resistant color stuffing again, stir, then be ground to that fineness is 30-40 μm, viscosity is 6P; Finally add anti-settling agent with moderate-speed mixer, obtain first component;
The preparation of second component: solidifying agent is allocated together with solidifying agent solvent evenly, obtain second component;
The preparation of polysiloxane heat reflection finish paint: first component and second component are mixed in proportion, obtains polysiloxane heat reflection finish paint.
10. a method for anticorrosion treatment, it uses the polysiloxane heat reflection finish paint described in any one of claim 1-8, and be included in the step in coated upper coating finish 1-2 road, wherein, the coating thickness of per pass finish paint is 80-100 μm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107057476A (en) * | 2017-06-19 | 2017-08-18 | 王欣 | A kind of multi-functional chlorinated rubber deck of ship paint |
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Application publication date: 20150930 |