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CN104553206A - Weather-proof material with functions of corrosion resistance and heat preservation and pipeline - Google Patents

Weather-proof material with functions of corrosion resistance and heat preservation and pipeline Download PDF

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Publication number
CN104553206A
CN104553206A CN201310499579.6A CN201310499579A CN104553206A CN 104553206 A CN104553206 A CN 104553206A CN 201310499579 A CN201310499579 A CN 201310499579A CN 104553206 A CN104553206 A CN 104553206A
Authority
CN
China
Prior art keywords
weather resistant
resistant material
thermal insulation
pipeline
aeroge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310499579.6A
Other languages
Chinese (zh)
Inventor
姚雪容
马蓓蓓
任毅
罗水源
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinopec Beijing Research Institute of Chemical Industry
China Petroleum and Chemical Corp
Original Assignee
Sinopec Beijing Research Institute of Chemical Industry
China Petroleum and Chemical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sinopec Beijing Research Institute of Chemical Industry, China Petroleum and Chemical Corp filed Critical Sinopec Beijing Research Institute of Chemical Industry
Priority to CN201310499579.6A priority Critical patent/CN104553206A/en
Publication of CN104553206A publication Critical patent/CN104553206A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • 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
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • 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
    • C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
    • C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
    • C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • 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
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • 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
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention provides a weather-proof material with functions of corrosion resistance and heat preservation and a pipeline. The weather-proof material comprises a corrosion resistant layer, a heat preservation layer and a weather-proof protective layer, which are successively stacked, wherein the heat preservation layer is formed by heat preservation paint containing a heat preservation filler and a binder; the total weight of the heat preservation paint is used as a benchmark, the heat preservation filler contains at least 20 wt% of aerogel. The weather-proof material with the functions of corrosion resistance and heat preservation and the pipeline provided by the invention can concurrently have the properties of heat preservation, corrosion resistance and weather resistance well.

Description

A kind of weather resistant material and pipeline with corrosion-resistant thermal insulation function
Technical field
The present invention relates to and a kind of there is the weather resistant material of corrosion-resistant thermal insulation function and a kind of pipeline.
Background technology
The corrosion of metallic conduit brings huge spillage of material and the waste of human resources to industries such as petrochemical industries, and time serious, in pipeline, the leakage of chemical substance also can cause the generation of environmental pollution and peril.Another problem that metallic conduit transmission medium exists is the heat loss of pipeline, and particularly for the conveying of the media such as oil, the heat loss of tube wall directly causes the reduction of oil temperature in pipe, when temperature is lower than the blocking that will cause pipeline during wax precipitation point.Therefore, be urgent problem in petroleum industry to the anticorrosion of pipeline and insulation.
Current petroleum pipeline outer wall many employings polyurethane foam, as insulation material, has also added polyethylene or polypropylene protective layer outward at polyurethane foam.But polyethylene or polypropylene protective layer in use often break because of aging or construction, and its weatherability and protective effect are also unsatisfactory.Once protective layer destroys, rainwater etc. enter in foam heat-insulation layer and are then not easy to flow out, and will cause the metal erosion problem under heat-insulation layer.For this problem, the thermal insulation coatings containing aerogel particle newly developed in the market, the thermal conductivity factor of aerogel particle can be down to 0.012W/mK, also lower than the thermal conductivity factor (0.03W/mK) of polyurethane foamed material, heat insulation effect significantly improves, the insulation layer thickness that reaching heat insulation effect needs reduces greatly, and can avoid the metal erosion problem under foam heat-insulation layer to a great extent.But the mainly acrylic compounds water paint of aeroge coating products in the market, resistance to water is good not, is not suitable for being used alone for a long time in wet environment or water environment; Also part aeroge coating products is had to be the aeroge of epoxy resin matrix, it is more quite a lot of than the antiseptic property of the aeroge of acrylic matrix, but often Toughness Ratio is poor after epoxy resin cure, easily crack, its antiseptic property and weather resistance are had a greatly reduced quality.In addition, as a rule, the high processability that can affect thermal insulation coatings of the content of aeroge in thermal insulation coatings, be unfavorable for being applied in material surface, therefore, when aeroge is used for thermal insulation coatings, performance is applied in order to what ensure coating, usually need the content of the aeroge in thermal insulation coatings to control lower than 20 % by weight, but, be limited to the improvement of heat-insulating property like this.
Summary of the invention
The object of the invention is to provide a kind of new weather resistant materials with corrosion-resistant thermal insulation function and a kind of pipeline.Described weather resistant materials and pipeline have excellent antiseptic property, heat-insulating property and weather resistance.
The invention provides a kind of weather resistant material with corrosion-resistant thermal insulation function; wherein; described weather resistant material comprises the anticorrosive coat, heat-insulation layer and the weathering protective layer that stack gradually; described heat-insulation layer is formed by the thermal insulation coatings containing insulation filler and binding agent; and with the gross weight of described thermal insulation coatings for benchmark, described insulation filler contains the aeroge of at least 20 % by weight.
In addition, present invention also offers a kind of pipeline, wherein, described pipeline comprises metal die and is coated on the above-mentioned weather resistant material with corrosion-resistant thermal insulation function of described metal die outer surface, and described metal die contacts with the described anticorrosive coat with the weather resistant material of corrosion-resistant thermal insulation function.
Provided by the invention there is corrosion-resistant thermal insulation function weather resistant material and pipeline make use of this sandwich structure of anticorrosive coat, heat-insulation layer and weathering protective layer dexterously; this special structure reduces the requirement to the thermal insulation coatings mouldability forming described heat-insulation layer; solve the problem of prior art coating difficult forming when aeroge content height; the higher thermal insulation coatings of aeroge content also can be fixed on well between anticorrosive coat and weathering protective layer, form heat-insulation layer, thus improve the heat-insulating property of described weather resistant material and pipeline more significantly.In addition, the existence of described anticorrosive coat and weathering protective layer, by making described weather resistant material and pipeline on the basis with excellent heat-insulating property, also has good antiseptic property and weather resistance.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Detailed description of the invention
Below the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The weather resistant material with corrosion-resistant thermal insulation function provided by the invention comprises the anticorrosive coat, heat-insulation layer and the weathering protective layer that stack gradually; described heat-insulation layer is formed by the thermal insulation coatings containing insulation filler and binding agent; and with the gross weight of described thermal insulation coatings for benchmark, described insulation filler contains the aeroge of at least 20 % by weight.
The present invention is not particularly limited the content being incubated filler and binding agent in described thermal insulation coatings, such as, with the gross weight of described thermal insulation coatings for benchmark, the content of described insulation filler can be 20-99 % by weight, and the content of described binding agent can be 1-80 % by weight.
According to the present invention, the kind of described aeroge can be the routine selection of this area, such as, can be one or more in aerosil, alundum (Al2O3) aeroge, ZrO_2 aerogel, titania aerogel etc., be particularly preferably aerosil.Described aeroge can be commercially available, and also can be prepared by sol-gel process, supercritical process or subcritical technique, concrete grammar is known to the skilled person, and therefore not to repeat here.
According to the present invention, as a rule, in described thermal insulation coatings, aeroge content is higher, the heat-insulating property that the weather resistant material with corrosion-resistant thermal insulation function obtained has had, but in order to improve the processability of described thermal insulation coatings, preferably, the content of described aeroge is 20-80 % by weight.
According to the present invention, in order to have the heat-insulating property of the weather resistant material of corrosion-resistant thermal insulation function described in improving further, the particle diameter of described aeroge is preferably 5 μm of-4mm, is more preferably 0.01mm-1mm; Average pore size is preferably 20-40nm, is more preferably 20-30nm; Porosity is preferably more than 90%, is more preferably 90-95%.Above-mentioned nano level aperture and high porosity can make described aeroge have extremely low thermal conductivity factor and good heat-insulating property.
The thermal conductivity factor of the present invention to described aeroge is not particularly limited, and such as, can be 40mW/mK, is preferably 1-25mW/mK, is more preferably 10-15mW/mK.
According to the present invention, described thermal insulation coatings can also contain in sepiolite, vermiculite, perlite, flyash, diatomite and calcium silicates one or more, the production cost of thermal insulation coatings can be reduced like this.In addition, the content of above-mentioned several material can be selected according to the content of aeroge, such as, the ratio of the total content of the content of described aeroge and sepiolite, vermiculite, perlite, flyash, diatomite and calcium silicates can be 3-6:1, is preferably 3.5-5.5:1.
The present invention is not particularly limited the kind of adhesive in described heat-insulation layer, can be selected from physics solidifies in single-component adhesive, chemosetting single-component adhesive and the many component adhesives of chemosetting one or more.Wherein, described physics solidifies single-component adhesive and refers to the adhesive that physical reactions only occurs in the curing process, such as, can be acrylic resin and/or organic siliconresin.Described chemosetting one-package adhesive refers to and does not add the adhesive that curing agent just can realize chemosetting, usually can for the adhesive of solidification can be realized by heating or pressurizeing, such as, base catalysis phenolic resins and/or unrighted acid modified epoxy.Described chemosetting multi-component adhesive is referred to and is wherein realized the adhesive of solidification by curing agent containing curing agent, such as, can be one or more in dual-component polyurethane resin, bicomponent epoxy resin and two component fluorocarbon resin.
According to the present invention, described anticorrosive coat can adopt the existing various anticorrosive paint with anti-corrosion function to be formed.Described anticorrosive paint usually can contain in epoxy resin, polyurethane resin and phenolic resins one or more.
According to the present invention, described epoxy resin such as can be selected from bisphenol A type epoxy resin, glycidyl ether type epoxy resin, glycidyl ester epoxy resin, glycidyl amine epoxy resin, aliphatic category epoxy resin, polysulfide-rubber-modified epoxy, polyamide modified epoxy, the tertiary butyraldehyde modified epoxy of polyvinyl alcohol, acrylonitrile butadiene rubber modified epoxy resin, phenolic resin modified epoxy resin, mylar modified epoxy, urea aldehyde Melamine resin modified epoxy resin, furfural resin modified epoxy, vinyl modified epoxy, one or more in isocyanate modified epoxy resin and silicone-modified epoxy resin.
According to the present invention, described polyurethane resin such as can be selected from one or more of unmodified polyurethane, acrylic acid modified polyurethane, fluorine silicon modified polyurethane, epoxy modified polyurethane and organic silicon modified polyurethane.
According to the present invention, described phenolic resins such as can be selected from unmodified phenolic resins, dimethylbenzene phenol-formaldehyde resin modified, epoxy modified phenolic and Effect of Organosilicon-modified Phenol-formaldehyde Resin one or more.
In addition, above-mentioned epoxy resin, polyurethane resin and phenolic resins by commercially available, also can be prepared according to the method for well known to a person skilled in the art and obtain, all can know, will repeat no more at this these those skilled in the art.
According to the present invention, in order to more be conducive to the solidification of described epoxy resin, polyurethane resin and phenolic resins, being formed in the anticorrosive paint of described anticorrosive coat and can also contain curing agent.The kind of described curing agent reasonably can be selected according to the kind of resin.Such as, for epoxylite, described curing agent can be amine system curing agent and/or acid anhydrides system curing agent.Particularly, described amine system curing agent can be ethylenediamine, trimethylhexamethylenediamine, diethyl triamine, methylol ethylenediamine, AEEA, dihydroxy ethyl ethylenediamine, ethoxy diethylenetriamine, dihydroxy ethyl ethylenediamine, ethoxy diethylenetriamine, dihydroxy ethyl diethylenetriamine, ethoxy hexamethylene diamine, a cyanoethyl ethylenediamine, dicyanoethyl ethylenediamine, dicyanoethyl hexamethylene diamine, dicyanodiamine, cyclohexanediamine, the Meng alkane diamines, amine ethyl croak piperazine, one or more in IPD and DACH; Described acid anhydrides system curing agent can be one or more in methyl tetrahydrophthalic anhydride, methyl hexahydrophthalic anhydride, succinic anhydride and adipic anhydride.Phenolic resins comprises base catalysis phenolic resins and acid catalysis phenolic resins, wherein, base catalysis phenolic resins can realize solidification under the condition of heating, and for acid catalysis phenolic resins, described curing agent can be paraformaldehyde and/or hexamethylenetetramine usually.For polyurethane resin, described curing agent can be one or more in toluene di-isocyanate(TDI) (TDI), the addition product of Trimethoprim (TMP), TDI and the prepolymer of hydroxy-containing component and the tripolymer of TDI.The consumption of described curing agent can be the routine selection of this area, will repeat no more at this.In addition, in actual use, described anticorrosive paint directly can adopt the chemosetting multicomponent resin containing resin matrix component (precursors of epoxy resin, polyurethane resin, phenolic resins or above-mentioned three kinds of resins) and curing agent.
According to the present invention, described weathering protective layer can adopt the existing various weather resistant coating with weatherability to be formed.Described weather resistant coating usually can contain in polyurethane resin, organic siliconresin, organic fluorine, ethylene propylene diene rubber and butyl rubber one or more.
According to the present invention, according to the needs that reality uses, described weather resistant coating optionally can also contain curing agent, antioxidant, age resistor, the auxiliary agents such as curing accelerator.The kind of above-mentioned auxiliary agent and consumption can be all that the routine of this area is selected, and will repeat no more at this.
In addition, in actual use, described weather resistant coating directly can adopt the chemosetting multicomponent resin containing resin matrix component (precursor of polyurethane resin, organic fluorine, ethylene propylene diene rubber or above-mentioned several resin) and curing agent.
The thickness of the present invention to described anticorrosive coat, heat-insulation layer and weathering protective layer is not particularly limited.Particularly, for the weather resistant material on the metallic conduit of petroleum chemical industry, the thickness of described anticorrosive coat can be 50-2000 micron, is preferably 50-1000 micron, is more preferably 10-300 micron; The thickness of described heat-insulation layer can be 100-2000 micron, is preferably 500-2000 micron, is more preferably 800-1200 micron; The thickness of described weathering protective layer can be 50-2000 micron, is preferably 100-1000 micron, is more preferably 200-400 micron.
According to a kind of detailed description of the invention of the present invention, described in there is corrosion-resistant thermal insulation function weather resistant material can be formed according to following steps: the anti-corrosion paint that (1) will form described anticorrosive coat on carrier and dry or solidification, forms anticorrosive coat; (2) thermal insulation coatings forming described heat-insulation layer is coated in also dry or solidification on described anticorrosive coat, forms heat-insulation layer; (3) will weather resistant paint also dry or solidification on described heat-insulation layer of described weathering protective layer be formed, form weathering protective layer.
Wherein, the mode of described coating is known to the skilled person, and such as, can be brushing, showering, spraying etc.In addition, described carrier can be existing various can as carrying coating object, such as, can be plank, plastic plate, metallic plate, case, pipeline etc.
According to the present invention, by described anticorrosive paint, thermal insulation coatings can be identical with the condition of weather resistant paint solidification, also can be different, and can be all the routine selection of this area.Such as, the condition of described solidification all can comprise: solidification temperature can be-20 DEG C to 100 DEG C, and hardening time can be 5-1500 minute.
Pipeline provided by the invention comprises metal die and is coated on the above-mentioned weather resistant material with corrosion-resistant thermal insulation function of described metal die outer surface, and described metal die contacts with the described anticorrosive coat with the weather resistant material of corrosion-resistant thermal insulation function.
In described pipeline; formed described anticorrosive coat, the material of heat-insulation layer and weathering protective layer and thickness with describe above to have described anticorrosive coat in the weather resistant material of corrosion-resistant thermal insulation function, the material of heat-insulation layer and weathering protective layer and thickness identical, therefore not to repeat here.
In the actual fabrication process of described pipeline, described anticorrosive coat, heat-insulation layer and weathering protective layer can be formed successively on described metal die surface.According to a kind of detailed description of the invention of the present invention, described pipeline can be formed according to following steps:
(1) by the surface cleaning of metal die, then the anti-corrosion material forming described anticorrosive coat is coated in the outer surface also dry or solidification of described metal die, forms anticorrosive coat;
(2) thermal insulation coatings forming described heat-insulation layer is coated in also dry or solidification on described anticorrosive coat, forms heat-insulation layer;
(3) will weather resistant paint also dry or solidification on described heat-insulation layer of described weathering protective layer be formed, form weathering protective layer.
Wherein, the coating method of described anticorrosive paint, thermal insulation coatings and weather resistant coating and the condition of solidification all can weather resistant material described with the formation described above time described in anticorrosive paint, thermal insulation coatings identical with the coating method of weather resistant coating and the condition of solidification, therefore not to repeat here.
Below will be described the present invention by embodiment.
In following preparation example, embodiment and comparative example, aeroge used is aerosil, and purchased from Cabot company, particle diameter is 0.1-0.7mm, and average pore size is 20nm, and porosity is 90%, and thermal conductivity factor is 0.012W/mK.Diatomite is purchased from Celite (China) Co., Ltd, and porosity is 90%, and thermal conductivity factor is 0.06W/mK.Wherein, particle diameter is measured by Malvern company Mastersizer2000E type laser particle analyzer, average pore size is measured by the SEM that to be purchased from the model of Hitachi company be ES-4700, porosity is measured by nitrogen adsorption methods, and thermal conductivity factor is measured by the DRP-4A type thermal conductivity measuring apparatus of Tianjin Jian Yi testing machine Co., Ltd.
In following preparation example, embodiment and comparative example, producer and the trade mark of resin and curing agent are as follows:
Dual-component polyurethane resin: Beijing ACCT Technology Co., Ltd., ACCT TS501;
Bicomponent epoxy resin: Dongguan City Bo Xiang Electron Material Co., Ltd, E-30CL;
Thermosetting phenolic resin: Nantong Sumitomo Bakelite Co., Ltd, PR-55700;
Two component fluorocarbon resin: Beijing ACCT Technology Co., Ltd., ACCT TF803;
Organic siliconresin: DOW CORNING (U.S.), EE1100.
Preparation example 1
This preparation example is for illustration of thermal insulation coatings provided by the invention and preparation method thereof.
The aerosil of the bicomponent epoxy resin of 100 weight portions and 100 weight portions is mixed, obtains thermal insulation coatings T1.Wherein, with the gross weight of described thermal insulation coatings T1 for benchmark, wherein the content of bicomponent epoxy resin is 50 % by weight, and the content of described aerosil is 50 % by weight.
Preparation example 2
This preparation example is for illustration of thermal insulation coatings provided by the invention and preparation method thereof.
The aerosil of the bicomponent epoxy resin of 100 weight portions and 25 weight portions is mixed, obtains thermal insulation coatings T2.Wherein, with the gross weight of described thermal insulation coatings T2 for benchmark, wherein the content of bicomponent epoxy resin is 80 % by weight, and the content of described aerosil is 20 % by weight.
Preparation example 3
This preparation example is for illustration of thermal insulation coatings provided by the invention and preparation method thereof.
The aerosil of the bicomponent epoxy resin of 100 weight portions and 400 weight portions is mixed, obtains thermal insulation coatings T3.Wherein, with the gross weight of described thermal insulation coatings T3 for benchmark, wherein the content of bicomponent epoxy resin is 20 % by weight, and the content of described aerosil is 80 % by weight.
Preparation example 4
This preparation example is for illustration of thermal insulation coatings provided by the invention and preparation method thereof.
The aerosil of the bicomponent epoxy resin of 100 weight portions, 80 weight portions is mixed with the diatomite of 20 weight portions, obtains thermal insulation coatings T4.Wherein, with the gross weight of described thermal insulation coatings T4 for benchmark, wherein the content of bicomponent epoxy resin is 50 % by weight, and the content of described aerosil is 40 % by weight, and diatomaceous content is 10 % by weight.
Contrast preparation example 1
This contrast preparation example is for illustration of reference thermal insulation coatings and preparation method thereof.
Thermal insulation coatings is prepared according to the method for embodiment 1, unlike, the consumption of described aeroge is 11 weight portions, obtains reference thermal insulation coatings DT1.Wherein, with the gross weight of described reference thermal insulation coatings DT1 for benchmark, wherein the content of bicomponent epoxy resin is 90 % by weight, and the content of described aerosil is 10 % by weight.
Embodiment 1
This embodiment is for illustration of weather resistant material provided by the invention and pipeline and preparation method thereof.
After the surface cleaning of ordinary carbon steel pipe (length is 9 meters, and internal diameter is 80mm, and external diameter is 89mm, lower same), first spray one deck dual-component polyurethane resin on its outer surface, and solidify 2 hours at 60 DEG C.After resin solidification, spray the thermal insulation coatings T1 obtained by preparation example 1 in its surface again.After thermal insulation coatings drying, then spray the two component fluorocarbon resin of one deck thereon, and solidify 2 hours at normal temperatures, obtain comprising metal die and be coated on successively the pipeline G1 of the anticorrosive coat on described metal die surface, heat-insulation layer and weathering protective layer.Wherein, in described pipeline G1, the thickness of anticorrosive coat is 200 microns, and the thickness of heat-insulation layer is 1000 microns, and the thickness of weathering protective layer is 300 microns.
Embodiment 2
This embodiment is for illustration of weather resistant material provided by the invention and pipeline and preparation method thereof.
After the surface cleaning of ordinary carbon steel pipe, first spray one deck bicomponent epoxy resin on its outer surface, and solidify 2 hours at 60 DEG C.After resin solidification, spray the thermal insulation coatings T1 obtained by preparation example 1 in its surface again.After thermal insulation coatings drying, then spray one deck dual-component polyurethane resin thereon, and solidify 2 hours at 60 DEG C, obtain comprising metal die and be coated on successively the pipeline G2 of the anticorrosive coat on described metal die surface, heat-insulation layer and weathering protective layer.Wherein, in described pipeline G2, the thickness of anticorrosive coat is 200 microns, and the thickness of heat-insulation layer is 1000 microns, and the thickness of weathering protective layer is 300 microns.
Embodiment 3
This embodiment is for illustration of weather resistant material provided by the invention and pipeline and preparation method thereof.
After the surface cleaning of ordinary carbon steel pipe, first spray one deck thermosetting phenolic resin on its outer surface, and solidify 2 hours at 90 DEG C.After resin solidification, spray the thermal insulation coatings T1 obtained by preparation example 1 in its surface again.After thermal insulation coatings drying, then spray one deck organic siliconresin thereon and make it dry, obtaining comprising metal die and be coated on successively the pipeline G3 of the anticorrosive coat on described metal die surface, heat-insulation layer and weathering protective layer.Wherein, in described pipeline G3, the thickness of anticorrosive coat is 200 microns, and the thickness of heat-insulation layer is 1000 microns, and the thickness of weathering protective layer is 300 microns.
Embodiment 4
This embodiment is for illustration of weather resistant material provided by the invention and pipeline and preparation method thereof.
Insulation material and pipeline is prepared according to the method for embodiment 1; unlike; the described thermal insulation coatings T1 thermal insulation coatings T2 obtained by preparation example 2 substitutes, and obtains comprising metal die and be coated on successively the pipeline G4 of the anticorrosive coat on described metal die surface, heat-insulation layer and weathering protective layer.Wherein, in described pipeline G4, the thickness of anticorrosive coat is 200 microns, and the thickness of heat-insulation layer is 1000 microns, and the thickness of weathering protective layer is 300 microns.
Embodiment 5
This embodiment is for illustration of weather resistant material provided by the invention and pipeline and preparation method thereof.
Insulation material and pipeline is prepared according to the method for embodiment 1; unlike; the described thermal insulation coatings T1 thermal insulation coatings T3 obtained by preparation example 3 substitutes, and obtains comprising metal die and be coated on successively the pipeline G5 of the anticorrosive coat on described metal die surface, heat-insulation layer and weathering protective layer.Wherein, in described pipeline G5, the thickness of anticorrosive coat is 200 microns, and the thickness of heat-insulation layer is 1000 microns, and the thickness of weathering protective layer is 300 microns.
Embodiment 6
This embodiment is for illustration of weather resistant material provided by the invention and pipeline and preparation method thereof.
Insulation material and pipeline is prepared according to the method for embodiment 1; unlike; the described thermal insulation coatings T1 thermal insulation coatings T4 obtained by preparation example 4 substitutes, and obtains comprising metal die and be coated on successively the pipeline G6 of the anticorrosive coat on described metal die surface, heat-insulation layer and weathering protective layer.Wherein, in described pipeline G6, the thickness of anticorrosive coat is 200 microns, and the thickness of heat-insulation layer is 1000 microns, and the thickness of weathering protective layer is 300 microns.
Comparative example 1
This comparative example is for illustration of reference weather resistant material and pipeline and preparation method thereof.
Weather resistant material and pipeline is prepared according to the method for embodiment 1; unlike; described thermal insulation coatings T1 substitutes with by the reference thermal insulation coatings DT1 that obtains of contrast preparation example 1, obtains comprising metal die and be coated on successively the reference pipeline DG1 of the anticorrosive coat on described metal die surface, heat-insulation layer and weathering protective layer.Wherein, in described reference pipeline DG1, the thickness of anticorrosive coat is 200 microns, and the thickness of heat-insulation layer is 1000 microns, and the thickness of weathering protective layer is 300 microns.
Test case 1-6
Test case 1-6 is for illustration of the test of weather resistant material provided by the invention and tube performance.
(1) heat-insulating property:
Under same environmental condition (comprising temperature, wind speed, humidity etc.), pass into the hot water of equal in quality flow G=180kg/h respectively in one end of pipeline G1-G6, ensure identical hot water inlet temperature T 1=90 DEG C, testing conduit outlet temperature T 2, normative reference SY-T6421-1999 " mensuration of equipment and heat dissipation of pipeline loss " calculates the heat loss Q=0.278G (C of pipeline 1t 1-C 2t 2), wherein C 1and C 2be respectively water at temperature T 1under specific heat capacity and at temperature T 2under specific heat capacity.And with do not apply the heat loss Q of ordinary carbon steel pipe of corrosion-resistant thermal insulation weather resistant coating 0(Q 0measurement and Computation method identical with the Measurement and Computation method of Q) compared with, the heat loss ratio=(Q reduced by following formulae discovery 0-Q)/Q 0× 100%, acquired results is as shown in table 1.The heat loss ratio reduced is higher, illustrates that heat insulation effect is better.
(2) antiseptic property:
The medium of specifying is tested and condition is tested the antiseptic property of pipeline G1-G6 floating coat respectively according to the resistance to chemical attack to the 1st type coating in GB/T18593-2010 " corrosion-proof coating of smelting combined epoxy powdery paints ", observe whether coating is peeled off, ftractures, soften in the temperature and time condition of test, efflorescence, the phenomenon such as go bad, if without these phenomenons, the decay resistance of surperficial pipeline is qualified, otherwise defective.Acquired results is as shown in table 1.
(3) weather resistance:
Test according to the weather resistance of method to pipeline G1-G6 floating coat specified in artificial weathering aging method 1 circulation A in GB/T1865-2009 " paint and varnish artificial weathering aging and man-made radiation expose the xenon arc radiation of filtration to the open air ", wherein, testing time is 2400h, observe sample before testing after situation of change.And with reference to the comprehensive ageing properties Classified Protection of protectiveness paint film in GB/T1766-2008 " ranking method of paint and varnish coating aging ", weather resistance is evaluated; grade is always divided into 6 grades; be respectively 0 grade, 1 grade, 2 grades, 3 grades, 4 grades and 5 grades, represent respectively paint film ageing-resistant performance excellent, good, in, can, poor and bad.Acquired results is as shown in table 1.
Table 1
Numbering The heat loss (%) reduced Antiseptic property is evaluated Weather resistance is graded
Embodiment 1 49 Qualified 0
Embodiment 2 48 Qualified 0
Embodiment 3 49 Qualified 0
Embodiment 4 46 Qualified 0
Embodiment 5 52 Qualified 0
Embodiment 6 47 Qualified 0
Comparative example 1 41 Qualified 0
From the results shown in Table 1, the content that weather resistant material and pipeline can improve aeroge is formed by the mode of MULTILAYER COMPOSITE, thus improve the heat-insulating property of material, enable the weather resistant material that obtains and pipeline have heat-insulating property, antiseptic property and weather resistance well concurrently.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.

Claims (10)

1. one kind has the weather resistant material of corrosion-resistant thermal insulation function; it is characterized in that; described weather resistant material comprises the anticorrosive coat, heat-insulation layer and the weathering protective layer that stack gradually; described heat-insulation layer is formed by the thermal insulation coatings containing insulation filler and binding agent; and with the gross weight of described thermal insulation coatings for benchmark, described insulation filler contains the aeroge of at least 20 % by weight.
2. weather resistant material according to claim 1, wherein, with the gross weight of described thermal insulation coatings for benchmark, the content of described aeroge is 20-80 % by weight.
3. weather resistant material according to claim 1 and 2, wherein, described aeroge is aerosil.
4. weather resistant material according to claim 3, wherein, the particle diameter of described aeroge is 5 μm of-4mm, and average pore size is 20-40nm, and porosity is more than 90%; Preferably, the particle diameter of described aeroge is 0.01mm-1mm, and average pore size is 20-30nm, and porosity is 90-95%.
5. weather resistant material according to claim 3, wherein, the thermal conductivity factor of described aeroge, lower than 40mW/mK, is preferably 1-25mW/mK, is more preferably 10-15mW/mK.
6. weather resistant material according to claim 1 and 2, wherein, described insulation filler is also containing one or more in sepiolite, vermiculite, perlite, flyash, diatomite and calcium silicates; Preferably, the ratio of the content of described aeroge and the total content of sepiolite, vermiculite, perlite, flyash, diatomite and calcium silicates is 3-6:1.
7. weather resistant material according to claim 1 and 2, wherein, described adhesive be selected from that physics solidifies in single-component adhesive, chemosetting single-component adhesive and the many component adhesives of chemosetting one or more; Preferably, it is acrylic resin and/or organic siliconresin that physics solidifies single-component adhesive, described chemosetting single-component adhesive is base catalysis phenolic resins and/or unrighted acid modified epoxy, and described chemosetting multi-component adhesive is one or more in dual-component polyurethane resin, bicomponent epoxy resin and two component fluorocarbon resin.
8. weather resistant material according to claim 1 and 2, wherein, described anticorrosive coat is formed by anticorrosive paint, described anticorrosive paint contain in epoxy resin, polyurethane resin and phenolic resins one or more; Preferably, described weathering protective layer is formed by weather resistant coating, described weather resistant coating contain in polyurethane resin, organic siliconresin, organic fluorine, ethylene propylene diene rubber and butyl rubber one or more.
9. weather resistant material according to claim 1 and 2, wherein, the thickness of described anticorrosive coat is 50-2000 micron, and the thickness of described heat-insulation layer is 100-2000 micron, and the thickness of described weathering protective layer is 50-2000 micron.
10. a pipeline, it is characterized in that, described pipeline comprises metal die and is coated on the weather resistant material of described metal die outer surface, described weather resistant material is the weather resistant material with corrosion-resistant thermal insulation function in claim 1-9 described in any one, and described metal die contacts with the described anticorrosive coat with the weather resistant material of corrosion-resistant thermal insulation function.
CN201310499579.6A 2013-10-22 2013-10-22 Weather-proof material with functions of corrosion resistance and heat preservation and pipeline Pending CN104553206A (en)

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CN106979424A (en) * 2017-04-05 2017-07-25 鑫鹏源智能装备集团有限公司 A kind of titanium alloy multipurpose reducer pipe
CN107339518A (en) * 2017-07-12 2017-11-10 合肥信亚达智能科技有限公司 A kind of corrosion-proof steel pipe and preparation method thereof
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CN109306216A (en) * 2018-09-14 2019-02-05 同济大学 A humidity-controlling interior wall coating prepared by roasting diatomite
CN109796840A (en) * 2019-03-06 2019-05-24 徐超 A kind of reaction kettle heat insulating material for external
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CN111138892A (en) * 2018-11-05 2020-05-12 丰田自动车株式会社 Thermal barrier coating for internal combustion engine and method for forming thermal barrier coating
CN111255960A (en) * 2019-12-19 2020-06-09 中裕软管科技股份有限公司 Heat-insulating hose and manufacturing method thereof
CN112322180A (en) * 2020-11-25 2021-02-05 广西京帅防水科技有限公司 Environment-friendly polyurethane waterproof coating and preparation device thereof
CN112608671A (en) * 2020-12-04 2021-04-06 中国特种设备检测研究院 Heat-insulating polyurethane anticorrosive paint and preparation method thereof
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CN105964523A (en) * 2016-05-21 2016-09-28 中山市绿浪助剂有限公司 Synthetic process of metal organic matter high in stability and resistant to high temperature
ES2665943A1 (en) * 2016-10-28 2018-04-30 Tobías Santiago GONZÁLEZ ROMERO Insulated metal tube with airgel
CN106979424A (en) * 2017-04-05 2017-07-25 鑫鹏源智能装备集团有限公司 A kind of titanium alloy multipurpose reducer pipe
CN107339518A (en) * 2017-07-12 2017-11-10 合肥信亚达智能科技有限公司 A kind of corrosion-proof steel pipe and preparation method thereof
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CN109306216A (en) * 2018-09-14 2019-02-05 同济大学 A humidity-controlling interior wall coating prepared by roasting diatomite
CN111138892A (en) * 2018-11-05 2020-05-12 丰田自动车株式会社 Thermal barrier coating for internal combustion engine and method for forming thermal barrier coating
CN111138892B (en) * 2018-11-05 2021-08-31 丰田自动车株式会社 Thermal barrier coating for internal combustion engine and method for forming thermal barrier coating
CN109796840A (en) * 2019-03-06 2019-05-24 徐超 A kind of reaction kettle heat insulating material for external
CN111255960A (en) * 2019-12-19 2020-06-09 中裕软管科技股份有限公司 Heat-insulating hose and manufacturing method thereof
CN112322180A (en) * 2020-11-25 2021-02-05 广西京帅防水科技有限公司 Environment-friendly polyurethane waterproof coating and preparation device thereof
CN112608671A (en) * 2020-12-04 2021-04-06 中国特种设备检测研究院 Heat-insulating polyurethane anticorrosive paint and preparation method thereof
CN113399222A (en) * 2021-06-25 2021-09-17 东风汽车集团股份有限公司 Automobile body coating method capable of reducing VOC (volatile organic compounds) emission
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CN115785704A (en) * 2022-12-01 2023-03-14 华阳新材料科技集团有限公司 Preparation method of coal ash-based non-expansion type steel structure fireproof heat-insulation coating

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Application publication date: 20150429