CN104673034A - Nano silicon salt filler zinc-aluminum composite thermal-insulation coating and preparation method thereof - Google Patents
Nano silicon salt filler zinc-aluminum composite thermal-insulation coating and preparation method thereof Download PDFInfo
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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Abstract
The invention discloses a nano silicon salt filler zinc-aluminum composite thermal-insulation coating. The coating comprises, in parts by mass, 18-24 parts of a silicone-acrylate emulsion, 12-14 parts of rutile type titanium dioxide, 2-4 parts of an aid, 55-60 parts of functional filler, 3-4 parts of propylene glycol, 10-15 parts of PPESK (poly(phthalazinone ether sulphone ketone)) modified resin, 15-25 parts of silicon carbide micro-powder, 15-20 parts of fluorinated graphite and 30-35 parts of a coupling agent, wherein the PPESK modified resin comprises, in parts by mass, 40-70 parts of epoxy resin and 20-35 parts of PPESK; the particle size of the silicon carbide micro-powder is 6 mu m; the particle size of the fluorinated graphite is in a range of 5-10 mu m; the functional filler comprises nano-montmorillonite type silicate and barrier type functional filler in the mass ratio of 1:1.5; the barrier type functional filler comprises, in parts by mass, 2-6 parts of hollow glass beads, 10-15 parts of graphite, 20-35 parts of black silicon carbide, 25-30 parts of fine-grained aluminum oxide, 5-10 parts of molybdenum disulfide, 1-5 parts of zinc oxide and 3-6 parts of talc powder. The invention further designs a preparation method of the nano silicon salt filler zinc-aluminum composite thermal-insulation coating.
Description
Technical field
The present invention relates to the preparation field of nano composite dope, particularly a kind of nanometer silicate filler zinc-aluminium compound heat-insulation coating and preparation method thereof.
Background technology
Be exposed to the metal construction in field environment, very easily there is chemistry and electrochemical action and corroding in its surface, therefore needs at its surface-coated one deck preservative coat to protect metal construction main body not by corrosion with surrounding environment.But time damaged when metal structure surface corrosion protection coating material poor-performing, metal construction body also can be made to be exposed to outer generation corrosion.
Current employing have following several method; Adopt traditional rust-inhibiting paint application, antirust paint film can not thoroughly stop the hydration oxygen in air to soak into, and polymer painting material exists " catabiosis ", thus causes that enamelled coating cracks, bubbling and efflorescence.Once crackle, stripping block appear in enamelled coating, firm body structure surface can be corroded and rapid spread very soon; Adopt cathode protection method or environmental Kuznets Curves to reduce atmospheric moisture method, all need special detection control apparatus, need long-time maintenance, maintenance cost is high; Not only cost is high to adopt hot dipping method and electrochemical plating, and efficiency is low, seriously polluted, and steel construction size limits by coating bath, is not suitable for large-scale steel structure.
Thermal insulating coating can be divided into isolation-type, reflection-type and radial pattern 3 kinds according to insulating mechanism, and wherein isolation-type thermal insulating coating belongs to thick matter traditional coating, and its insulating mechanism is impedance heat trnasfer, and technology is relative maturity; Radiation Heat-insulated Paint be by the form of radiation, buildings is absorbed sunshine light heat to reach heat insulation and heat control in certain wavelength emission to air; The insulating mechanism of reflection type thermal insulation coating is reflected sunlight; In recent years, people, for effectively can stop thermal conduction, reduce the temperature of top coat and internal medium, thus reach and improve Working environment, reduce the object of energy consumption, carry out the research of outer wall heat-insulating coating successively.
At present, the production of reflective heat-insulation paint normally adopts titanium dioxide, PU cenosphere, cenosphere, ceramic fine bead, pearlstone etc. to coordinate a small amount of nanometer reflection heat-insulation functional material to reach reflective insulation function, but there is the shortcoming of rough coating, ornamental difference in it, reduces the contamination resistance of film simultaneously.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, provides a kind of nanometer silicate filler zinc-aluminium compound heat-insulation coating
In order to solve above technical problem, the invention provides a kind of nanometer silicate filler zinc-aluminium compound heat-insulation coating, contain organosilicon crylic acid latex by mass parts percentage calculation: 18-24 part, rutile titanium dioxide: 12-14 part, auxiliary agent: 2-4 part, functional stuffing: 55-60 part, propylene glycol: 3-4 part, polyether sulphone ketone modified resin: 10-15 part, silicon carbide micro-powder: 15-25 part, fluorographite: 15-20 part, coupling agent: 30-35 part, wherein:
Polyether sulphone ketone modified resin comprises following composition according to the mass fraction: epoxy resin: 40-70 part, poly (aryl ether sulfone ketone): 20-35 part;
Silicon carbide micro-powder particle diameter is 6 μm; Fluorographite particle diameter is 5-10 μm; Coupling agent is one or more mixtures in γ-aminopropyl triethoxysilane, γ-(2,3 glycidoxy) propyl trimethoxy silicane, 3-methacryloxypropyl trimethoxy silane;
Functional stuffing comprises:
Nano montmorillonite class silicate and isolation-type functional stuffing, and both mass ratioes are 1:1.5;
In the present invention, nano montmorillonite class silicate has unique laminate structure, energy transmit or or scatter and disappear process in pass laminate structure, the transmission speed of energy will be slowed down and change the bang path of energy, play the effect of heat-insulation and heat-preservation, nano montmorillonite class silicate thermal conductivity is extremely low simultaneously, suppress transmission ofenergy, it can bring beyond thought technique effect equally in environmental protection and energy saving field;
Nano montmorillonite class silicate consumption in use is also more crucial, although nanometer materials have extremely strong heat-insulation and heat-preservation function, but due to the constructional feature that it is special, coating in use its stain resistant have received very large impact, so, in the present invention, in controlling functions filler, the mass ratio of nano montmorillonite class silicate and isolation-type functional stuffing is 1:1.5, not only reaches extremely strong heat preservation and insulation, solves again the problem of stain resistant simultaneously;
Isolation-type functional stuffing comprises following component according to the mass fraction:
Hollow glass micropearl: 2-6 part, graphite: 10-15 part, black silicon carbide: 20-35 part, fine-grained alumina: 25-30 part, molybdenumdisulphide: 5-10 part, zinc oxide: 1-5 part, talcum powder: 3-6 part;
Molybdenumdisulphide, graphite, talcum powder is adopted in isolation-type functional stuffing, graphite material makes it easily produce slippage due to distinctive crystalline structure, graphite metal to-metal contact lubricant has adsorptivity simultaneously, one deck lubricant film (graphite crystal film) can be formed, play the effect reducing frictional wear, there is good thermal diffusivity and thermal conductivity, because the fusing point of carbon is very high, therefore can not produce carbon and metallic substance sting weldering phenomenon;
Talcum powder, as filler, can play skeleton function, reduces the hardness of paint film that manufacturing cost improves coating simultaneously, increase the stable of shape of product, increase tensile strength, shearing resistance, flexing intensity, pressure intensity, reduce distortion, extension rate, thermal expansivity, whiteness is high, the dispersed feature such as by force of epigranular, makes that the ductility of coating and workability etc. are excellent to be optimized;
Graphite and molybdenumdisulphide are mixed use, graphite and molybdenumdisulphide have good synergistic effect, both are the wear resisting property that effectively can improve coating used in combination in certain proportion, reduce wear weight loss and frictional coefficient, in coating, add a certain amount of antimonous oxide simultaneously, effectively can strengthen the hardness of paint coatings, and improve the wear resistance of coating.
Auxiliary agent comprises:
Solidifying agent: 20-50 part, defoamer: 2-8 part, flow agent: 2-8 part; Dispersion agent: 10-15 part, wetting agent: 2-6 part, matting agent: 2-6 part, film coalescence aid: 5-10 part, thickening material: 5-10 part, Natvosol: 5-10 part, pH adjusting agent: 1-5 part.
Dispersion agent comprises one or more in hydrophobic modified carboxylic acid sodium salt, polyacrylic acid sodium salt or ammonium salt; Film coalescence aid be lauryl alcohol ester and dipropylene according to lauryl alcohol ester: the part by weight compound of dipropylene=1:1 is made; Solidifying agent is the one in diethylenetriamine, mphenylenediamine, DMP-30/ polyamide 6 50, phenol aldehyde modified amine, diamino-diphenyl MSM DDS.
The technical scheme that the present invention limits further is:
Further, aforesaid nanometer silicate filler zinc-aluminium compound heat-insulation coating, organosilicon crylic acid latex is contained: 20 parts, rutile titanium dioxide: 13 parts, auxiliary agent: 3 parts by mass parts percentage calculation, functional stuffing: 58 parts, propylene glycol: 3 parts, polyether sulphone ketone modified resin: 12 parts, silicon carbide micro-powder: 16 parts, fluorographite: 18 parts, coupling agent: 31 parts.
Aforesaid nanometer silicate filler zinc-aluminium compound heat-insulation coating, organosilicon crylic acid latex is contained: 19 parts by mass parts percentage calculation, rutile titanium dioxide: 12 parts, auxiliary agent: 4 parts, functional stuffing: 56 parts, propylene glycol: 4 parts, polyether sulphone ketone modified resin: 11 parts, silicon carbide micro-powder: 22 parts, fluorographite: 16 parts, coupling agent: 33 parts.
The present invention have also been devised a kind of preparation method of nanometer silicate filler zinc-aluminium compound heat-insulation coating, comprises the steps:
(1) in Scattered Kettle, add distilled water, control rotating speed 500rpm-600rpm, slowly add Natvosol, pH adjusting agent and propylene glycol by massfraction, improve rotating speed to 1000rpm-1200rpm, high speed dispersion 15min-20min;
(2) slowly at the uniform velocity add rutile titanium dioxide, functional stuffing, silicon carbide micro-powder, fluorographite, defoamer, flow agent and the dispersion agent chosen by mass parts after stirring, rotating speed is down to 500rpm-600rpm;
(3) improve rotating speed to 1100rpm, high-speed stirring 40-50min, slowly add organosilicon crylic acid latex, polyether sulphone ketone modified resin and coupling agent successively by mass fraction, rotating speed is down to 500rpm-600rpm, stirs 20-50min;
(4) rotating speed is down to 300rpm-400rpm, adds solidifying agent, wetting agent, matting agent, film coalescence aid, thickening material by mass fraction, stirs 20-50min, controls viscosity 100KU-110KU, namely obtains nanometer silicate filler zinc-aluminium compound heat-insulation coating.
The present invention have also been devised a kind of preparation method of nanometer silicate filler zinc-aluminium compound heat-insulation coating, as preferred technical scheme, comprises the steps:
(1) in Scattered Kettle, add distilled water, control rotating speed 550rpm, slowly add Natvosol, pH adjusting agent and propylene glycol by massfraction, improve rotating speed to 1100rpm, high speed dispersion 18min;
(2) slowly at the uniform velocity add rutile titanium dioxide, functional stuffing, silicon carbide micro-powder, fluorographite, defoamer, flow agent and the dispersion agent chosen by mass parts after stirring, rotating speed is down to 550rpm;
(3) improve rotating speed to 1100rpm, high-speed stirring 45min, slowly add organosilicon crylic acid latex, polyether sulphone ketone modified resin and coupling agent successively by mass fraction, rotating speed is down to 580rpm, stirs 35min;
(4) rotating speed is down to 350rpm, adds solidifying agent, wetting agent, matting agent, film coalescence aid, thickening material by mass fraction, stirs 35min, controls viscosity 100KU-110KU, namely obtains nanometer silicate filler zinc-aluminium compound heat-insulation coating.
Adopt polyether sulphone ketone modified resin as the composition of zinc-aluminium composite coating in the present invention, this resin has the feature such as self-lubricating, wear resistance, good mechanical property, high temperature resistant, chemical-resistant, flame retardant resistance, radiation resistance, hydrolytic resistance, insulation stability; Zinc, aluminium form electropotential lower than ferrous metal layer on steel surface, and when surface has electrolytic solution to form corrosion cell, its supply current flows to iron and steel human body from coating, and result coating is corroded and human body is subject to galvanic protection effect.
Embodiment
embodiment 1
A kind of nanometer silicate filler zinc-aluminium compound heat-insulation coating that the present embodiment provides, organosilicon crylic acid latex is contained: 20 parts by mass parts percentage calculation, rutile titanium dioxide: 13 parts, auxiliary agent: 3 parts, functional stuffing: 58 parts, propylene glycol: 3 parts, polyether sulphone ketone modified resin: 12 parts, silicon carbide micro-powder: 16 parts, fluorographite: 18 parts, coupling agent: 31 parts, wherein:
Polyether sulphone ketone modified resin comprises following composition according to the mass fraction: epoxy resin: 40 parts, poly (aryl ether sulfone ketone): 35 parts;
Silicon carbide micro-powder particle diameter is 6 μm; Fluorographite particle diameter is 5 μm; Coupling agent is one or more mixtures in γ-aminopropyl triethoxysilane, γ-(2,3 glycidoxy) propyl trimethoxy silicane, 3-methacryloxypropyl trimethoxy silane;
Functional stuffing comprises:
Nano montmorillonite class silicate and isolation-type functional stuffing, and both mass ratioes are 1:1.5;
Isolation-type functional stuffing comprises following component according to the mass fraction:
Hollow glass micropearl: 6 parts, graphite: 10 parts, black silicon carbide: 35 parts, fine-grained alumina: 25 parts, molybdenumdisulphide: 10 parts, zinc oxide: 1 part, talcum powder: 6 parts;
Auxiliary agent comprises:
Solidifying agent: 20 parts, defoamer: 8 parts, flow agent: 2 parts; Dispersion agent: 15 parts, wetting agent: 2 parts, matting agent: 6 parts, film coalescence aid: 5 parts, thickening material: 10 parts, Natvosol: 5 parts, pH adjusting agent: 5 parts, dispersion agent is hydrophobic modified carboxylic acid sodium salt, film coalescence aid be lauryl alcohol ester and dipropylene according to lauryl alcohol ester: the part by weight compound of dipropylene=1:1 is made, and solidifying agent is diethylenetriamine.
The present embodiment additionally provides a kind of preparation method of nanometer silicate filler zinc-aluminium compound heat-insulation coating, comprises the steps:
(1) in Scattered Kettle, add distilled water, control rotating speed 500rpm, slowly add Natvosol, pH adjusting agent and propylene glycol by massfraction, improve rotating speed to 1200rpm, high speed dispersion 15min;
(2) slowly at the uniform velocity add rutile titanium dioxide, functional stuffing, silicon carbide micro-powder, fluorographite, defoamer, flow agent and the dispersion agent chosen by mass parts after stirring, rotating speed is down to 600rpm;
(3) improve rotating speed to 1100rpm, high-speed stirring 40min, slowly add organosilicon crylic acid latex, polyether sulphone ketone modified resin and coupling agent successively by mass fraction, rotating speed is down to 600rpm, stirs 20min;
(4) rotating speed is down to 400rpm, adds solidifying agent, wetting agent, matting agent, film coalescence aid, thickening material by mass fraction, stirs 20min, controls viscosity 110KU, namely obtains nanometer silicate filler zinc-aluminium compound heat-insulation coating.
embodiment 2
A kind of nanometer silicate filler zinc-aluminium compound heat-insulation coating that the present embodiment provides, organosilicon crylic acid latex is contained: 19 parts by mass parts percentage calculation, rutile titanium dioxide: 12 parts, auxiliary agent: 4 parts, functional stuffing: 56 parts, propylene glycol: 4 parts, polyether sulphone ketone modified resin: 11 parts, silicon carbide micro-powder: 22 parts, fluorographite: 16 parts, coupling agent: 33 parts, wherein:
Polyether sulphone ketone modified resin comprises following composition according to the mass fraction: epoxy resin: 70 parts, poly (aryl ether sulfone ketone): 20 parts;
Silicon carbide micro-powder particle diameter is 6 μm; Fluorographite particle diameter is 10 μm; Coupling agent is one or more mixtures in γ-aminopropyl triethoxysilane, γ-(2,3 glycidoxy) propyl trimethoxy silicane, 3-methacryloxypropyl trimethoxy silane;
Functional stuffing comprises:
Nano montmorillonite class silicate and isolation-type functional stuffing, and both mass ratioes are 1:1.5;
Isolation-type functional stuffing comprises following component according to the mass fraction:
Hollow glass micropearl: 2 parts, graphite: 15 parts, black silicon carbide: 20 parts, fine-grained alumina: 30 parts, molybdenumdisulphide: 5 parts, zinc oxide: 5 parts, talcum powder: 3 parts;
Auxiliary agent comprises:
Solidifying agent: 50 parts, defoamer: 2 parts, flow agent: 8 parts; Dispersion agent: 10 parts, wetting agent: 6 parts, matting agent: 2 parts, film coalescence aid: 10 parts, thickening material: 5 parts, Natvosol: 10 parts, pH adjusting agent: 1 part, dispersion agent is polyacrylic acid sodium salt, film coalescence aid be lauryl alcohol ester and dipropylene according to lauryl alcohol ester: the part by weight compound of dipropylene=1:1 is made, and solidifying agent is mphenylenediamine.
The present embodiment additionally provides a kind of preparation method of nanometer silicate filler zinc-aluminium compound heat-insulation coating, comprises the steps:
(1) in Scattered Kettle, add distilled water, control rotating speed 600rpm, slowly add Natvosol, pH adjusting agent and propylene glycol by massfraction, improve rotating speed to 1000rpm, high speed dispersion 20min;
(2) slowly at the uniform velocity add rutile titanium dioxide, functional stuffing, silicon carbide micro-powder, fluorographite, defoamer, flow agent and the dispersion agent chosen by mass parts after stirring, rotating speed is down to 500rpm;
(3) improve rotating speed to 1100rpm, high-speed stirring 50min, slowly add organosilicon crylic acid latex, polyether sulphone ketone modified resin and coupling agent successively by mass fraction, rotating speed is down to 500rpm, stirs 50min;
(4) rotating speed is down to 300rpm, adds solidifying agent, wetting agent, matting agent, film coalescence aid, thickening material by mass fraction, stirs 50min, controls viscosity 100KU, namely obtains nanometer silicate filler zinc-aluminium compound heat-insulation coating.
embodiment 3
A kind of nanometer silicate filler zinc-aluminium compound heat-insulation coating that the present embodiment provides, organosilicon crylic acid latex is contained: 19 parts by mass parts percentage calculation, rutile titanium dioxide: 12 parts, auxiliary agent: 4 parts, functional stuffing: 56 parts, propylene glycol: 4 parts, polyether sulphone ketone modified resin: 11 parts, silicon carbide micro-powder: 22 parts, fluorographite: 16 parts, coupling agent: 33 parts, wherein:
Polyether sulphone ketone modified resin comprises following composition according to the mass fraction: epoxy resin: 56 parts, poly (aryl ether sulfone ketone): 26 parts;
Silicon carbide micro-powder particle diameter is 6 μm; Fluorographite particle diameter is 8 μm; Coupling agent is one or more mixtures in γ-aminopropyl triethoxysilane, γ-(2,3 glycidoxy) propyl trimethoxy silicane, 3-methacryloxypropyl trimethoxy silane;
Functional stuffing comprises:
Nano montmorillonite class silicate and isolation-type functional stuffing, and both mass ratioes are 1:1.5;
Isolation-type functional stuffing comprises following component according to the mass fraction:
Hollow glass micropearl: 4 parts, graphite: 11 parts, black silicon carbide: 26 parts, fine-grained alumina: 28 parts, molybdenumdisulphide: 8 parts, zinc oxide: 3 parts, talcum powder: 5 parts;
Auxiliary agent comprises:
Solidifying agent: 36 parts, defoamer: 5 parts, flow agent: 6 parts; Dispersion agent: 11 parts, wetting agent: 4 parts, matting agent: 4 parts, film coalescence aid: 7 parts, thickening material: 8 parts, Natvosol: 6 parts, pH adjusting agent: 5 parts, dispersion agent comprises hydrophobic modified carboxylic acid sodium salt and ammonium salt, film coalescence aid be lauryl alcohol ester and dipropylene according to lauryl alcohol ester: the part by weight compound of dipropylene=1:1 is made, and solidifying agent is DMP-30/ polyamide 6 50.
The present embodiment additionally provides a kind of preparation method of nanometer silicate filler zinc-aluminium compound heat-insulation coating, comprises the steps:
(1) in Scattered Kettle, add distilled water, control rotating speed 550rpm, slowly add Natvosol, pH adjusting agent and propylene glycol by massfraction, improve rotating speed to 1100rpm, high speed dispersion 18min;
(2) slowly at the uniform velocity add rutile titanium dioxide, functional stuffing, silicon carbide micro-powder, fluorographite, defoamer, flow agent and the dispersion agent chosen by mass parts after stirring, rotating speed is down to 550rpm;
(3) improve rotating speed to 1100rpm, high-speed stirring 45min, slowly add organosilicon crylic acid latex, polyether sulphone ketone modified resin and coupling agent successively by mass fraction, rotating speed is down to 580rpm, stirs 35min;
(4) rotating speed is down to 350rpm, adds solidifying agent, wetting agent, matting agent, film coalescence aid, thickening material by mass fraction, stirs 35min, controls viscosity 100KU-110KU, namely obtains nanometer silicate filler zinc-aluminium compound heat-insulation coating.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (5)
1. a nanometer silicate filler zinc-aluminium compound heat-insulation coating, it is characterized in that, contain organosilicon crylic acid latex by mass parts percentage calculation: 18-24 part, rutile titanium dioxide: 12-14 part, auxiliary agent: 2-4 part, functional stuffing: 55-60 part, propylene glycol: 3-4 part, polyether sulphone ketone modified resin: 10-15 part, silicon carbide micro-powder: 15-25 part, fluorographite: 15-20 part, coupling agent: 30-35 part, wherein:
Described polyether sulphone ketone modified resin comprises following composition according to the mass fraction: epoxy resin: 40-70 part, poly (aryl ether sulfone ketone): 20-35 part;
Described silicon carbide micro-powder particle diameter is 6 μm; Described fluorographite particle diameter is 5-10 μm; Described coupling agent is one or more mixtures in γ-aminopropyl triethoxysilane, γ-(2,3 glycidoxy) propyl trimethoxy silicane, 3-methacryloxypropyl trimethoxy silane;
Described functional stuffing comprises:
Nano montmorillonite class silicate and isolation-type functional stuffing, and both mass ratioes are 1:1.5;
Described isolation-type functional stuffing comprises following component according to the mass fraction:
Hollow glass micropearl: 2-6 part, graphite: 10-15 part, black silicon carbide: 20-35 part, fine-grained alumina: 25-30 part, molybdenumdisulphide: 5-10 part, zinc oxide: 1-5 part, talcum powder: 3-6 part;
Described auxiliary agent comprises:
Solidifying agent: 20-50 part, defoamer: 2-8 part, flow agent: 2-8 part; Dispersion agent: 10-15 part, wetting agent: 2-6 part, matting agent: 2-6 part, film coalescence aid: 5-10 part, thickening material: 5-10 part, Natvosol: 5-10 part, pH adjusting agent: 1-5 part;
Described dispersion agent comprises one or more in hydrophobic modified carboxylic acid sodium salt, polyacrylic acid sodium salt or ammonium salt; Described film coalescence aid be lauryl alcohol ester and dipropylene according to lauryl alcohol ester: the part by weight compound of dipropylene=1:1 is made; Described solidifying agent is the one in diethylenetriamine, mphenylenediamine, DMP-30/ polyamide 6 50, phenol aldehyde modified amine, diamino-diphenyl MSM DDS.
2. nanometer silicate filler zinc-aluminium compound heat-insulation coating according to claim 1, it is characterized in that, organosilicon crylic acid latex is contained: 20 parts, rutile titanium dioxide: 13 parts, auxiliary agent: 3 parts by mass parts percentage calculation, functional stuffing: 58 parts, propylene glycol: 3 parts, polyether sulphone ketone modified resin: 12 parts, silicon carbide micro-powder: 16 parts, fluorographite: 18 parts, coupling agent: 31 parts.
3. nanometer silicate filler zinc-aluminium compound heat-insulation coating according to claim 1, it is characterized in that, organosilicon crylic acid latex is contained: 19 parts, rutile titanium dioxide: 12 parts, auxiliary agent: 4 parts by mass parts percentage calculation, functional stuffing: 56 parts, propylene glycol: 4 parts, polyether sulphone ketone modified resin: 11 parts, silicon carbide micro-powder: 22 parts, fluorographite: 16 parts, coupling agent: 33 parts.
4. the preparation method of nanometer silicate filler zinc-aluminium compound heat-insulation coating according to claim 1, is characterized in that, comprise the steps:
(1) in Scattered Kettle, add distilled water, control rotating speed 500rpm-600rpm, slowly add Natvosol, pH adjusting agent and propylene glycol by massfraction, improve rotating speed to 1000rpm-1200rpm, high speed dispersion 15min-20min;
(2) slowly at the uniform velocity add rutile titanium dioxide, functional stuffing, silicon carbide micro-powder, fluorographite, defoamer, flow agent and the dispersion agent chosen by mass parts after stirring, rotating speed is down to 500rpm-600rpm;
(3) improve rotating speed to 1100rpm, high-speed stirring 40-50min, slowly add organosilicon crylic acid latex, polyether sulphone ketone modified resin and coupling agent successively by mass fraction, rotating speed is down to 500rpm-600rpm, stirs 20-50min;
(4) rotating speed is down to 300rpm-400rpm, adds solidifying agent, wetting agent, matting agent, film coalescence aid, thickening material by mass fraction, stirs 20-50min, controls viscosity 100KU-110KU, namely obtains nanometer silicate filler zinc-aluminium compound heat-insulation coating.
5. the preparation method of nanometer silicate filler zinc-aluminium compound heat-insulation coating according to claim 1, is characterized in that, comprise the steps:
(1) in Scattered Kettle, add distilled water, control rotating speed 550rpm, slowly add Natvosol, pH adjusting agent and propylene glycol by massfraction, improve rotating speed to 1100rpm, high speed dispersion 18min;
(2) slowly at the uniform velocity add rutile titanium dioxide, functional stuffing, silicon carbide micro-powder, fluorographite, defoamer, flow agent and the dispersion agent chosen by mass parts after stirring, rotating speed is down to 550rpm;
(3) improve rotating speed to 1100rpm, high-speed stirring 45min, slowly add organosilicon crylic acid latex, polyether sulphone ketone modified resin and coupling agent successively by mass fraction, rotating speed is down to 580rpm, stirs 35min;
(4) rotating speed is down to 350rpm, adds solidifying agent, wetting agent, matting agent, film coalescence aid, thickening material by mass fraction, stirs 35min, controls viscosity 100KU-110KU, namely obtains nanometer silicate filler zinc-aluminium compound heat-insulation coating.
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Application publication date: 20150603 |