CN104497806A - Weather-resistant steel plate and preparation process thereof - Google Patents
Weather-resistant steel plate and preparation process thereof Download PDFInfo
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- CN104497806A CN104497806A CN201410739854.1A CN201410739854A CN104497806A CN 104497806 A CN104497806 A CN 104497806A CN 201410739854 A CN201410739854 A CN 201410739854A CN 104497806 A CN104497806 A CN 104497806A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
- B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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- 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
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- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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Abstract
The invention discloses a weather-resistant steel plate and a preparation process thereof. A base coating and a surface coating applied to the weather-resistant steel plate are prepared from organosilicone-modified polyester resin serving as a base material of a coating composition and assisted by other assistants. In a practical preparation process, the base coating and the surface coating employing the organosilicone-modified polyester resin as the base material are mainly adopted; and coating and baking are sequentially carried out on a pre-coated steel plate, so that the operation flow is simple and rapid. In practical use, the organosilicone-modified polyester resin has relatively excellent high-temperature resistance, and therefore the prepared coating composition has relatively good property, can be sprayed on metal surfaces such as iron material, aluminum products or stainless steel, and can be widely applied to heat-resistant materials of an oil refining furnace, an aluminum refining furnace, an engine exhaust system, a motor vehicle exhaust silencer and the like in a high-temperature working state for a long time.
Description
Technical field
The invention belongs to metal material field, specifically, is a kind of anti weathering steel and manufacture craft thereof.
Background technology
Steel plate be by pre-coating film steel plate before shaping through coating, oven dry and obtaining, because film also will stand formed machining after film forming, therefore, not only require that pre-coating film steel plate can meet hardness and the plasticity of high request, the class coating material that its coating uses needs degrading resistance property equally.In metal material field, the coating on metal not only can play protection and beautify the effect of metal appearance, as antirust and painted etc., sometimes, coating also can be utilized to realize some special functions, as improved lubrication, improving deep drawability etc.In actual application, effect and the coating of coating have close relationship.For heat resisting coating, heat resisting coating refers to that its film can maintain high temperature (being generally more than 150 DEG C) not cracking for a long time, yellowish appearance degree is little, do not come off, suitable physicals and protection function can also be kept, existing patent documentation CN1583912 (coiled material priming paint coating and method for making thereof, 2005.02.23) disclose one by linear polyester resin or epoxy resin, aminoresin, rust-stabilising pigment, the professional coating of auxiliary agent and solvent composition, when reality uses, because the heat resisting temperature of vibrin or epoxy resin is at 130 ~ 155 DEG C, therefore, be applicable to heat zinc coating plate, electrolytic galvanized sheet, the best results such as alloying plate and cold rolled plate material.
Along with the progress of technology, it is found that silicone resin also has preferably thermotolerance, the basic framework of silicone resin is the main chain of Si-O, higher than the bond energy of the C-C key of common high molecular polymer, it is heat-resisting and antioxygenation is also stronger, under normal circumstances, the heat resisting temperature of silicone resin is 300 DEG C, be proven, silicone resin is except thermotolerance, also show excellent weathering resistance, pollution resistance, pull out water-based, the performance such as winter hardiness and resistance to chemical attack, but when reality uses, but also there are the following problems, such as: need hot setting (more than 250 DEG C) and set time long, not easily large-area construction, to the poor adhesive force of metal, poor solvent resistance and cost of manufacture high, for this reason, we certainly will need to find a kind of high performance material that can substitute silicone resin, for the coating problems of steel plate, simultaneously, also need this high performance material more existing vibrin or epoxy resin can have higher thermotolerance.
Summary of the invention
The object of the present invention is to provide a kind of anti weathering steel, this anti weathering steel adopts base layer dope and surface coating material successively through coating by pre-coating film steel plate, toast and obtain, wherein, the base layer dope used and surface coating material are again by the base-material of silicone modified polyester resin as coating composition, and be aided with other auxiliary agents and be prepared from, when reality uses, because silicone modified polyester resin has more excellent resistance to elevated temperatures, therefore, consisting of coating composition have more good character, iron material can be sprayed on, the metallic surface such as aluminium or stainless steel, and be widely used in petroleum refinement stove, aluminium refines stove, engine exhaust system, silencer for motor vehicles etc. are on the heat-stable material under hot operation state for a long time.
Another object of the present invention is to the manufacture craft that a kind of anti weathering steel is provided, present method preparation process is simple, main employing, using silicone modified polyester resin as the base layer dope of base-material and surface coating material, pre-coating film steel plate carries out coating and baking successively, and operating process is simple, quick.
The present invention is achieved through the following technical solutions: a kind of anti weathering steel, described anti weathering steel adopts base layer dope and surface coating material successively through coating, baking and obtaining by pre-coating film steel plate, described base layer dope is coated on the top layer of pre-coating film steel plate, and form basic unit's film, by weight percentage, described base layer dope comprises following component:
Silicone modified polyester resin: 30 ~ 50%, filler: 20 ~ 46%,
Silicone coupling agents: 1 ~ 2%, phthalate: 0.5 ~ 1%,
Xylene solvent: 1 ~ 48.5%;
Described surface coating material is coated on the top layer of basic unit's film, and forms top layer film, and by weight percentage, described surface coating material comprises following component:
Silicone modified polyester resin: 40 ~ 60%; Pigment: 10 ~ 15%;
Polyamide curing agent: 5 ~ 7%; Filler: 10 ~ 15%;
Silicone coupling agents: 1.2 ~ 1.8%; Xylene solvent: 1.2 ~ 33.8%.
The basic coating that the present invention uses and surface coating material are all using silicone modified polyester resin as base-material, and be aided with other auxiliary combinations, in the present invention, silicone modified polyester resin is due to its excellent heat resisting temperature, to excellent adhesion and the processibility of metal material, excellent solvent resistance and good high hot hardness etc., can be used for being sprayed on iron material, the metallic surface such as aluminium or stainless steel, and be widely used in petroleum refinement stove, aluminium refines stove, engine exhaust system, silencer for motor vehicles etc. are on the heat-stable material under hot operation state for a long time.
Described silicone modified polyester resin is as properties-correcting agent by silicone resin, obtain through polycondensation with saturated polyester resin, in the present invention, silicone modified polyester resin has the advantage of silicone resin and saturated polyester resin concurrently, there is good resistance toheat, under normal circumstances, the high temperature resistant temperature of silicone modified polyester resin is 180 ~ 250 DEG C, when reality uses, the tack that the number of silicone resin content represents when decide base layer dope or surface coating material film, shock-resistance and thermotolerance, for better solving described problem, the mass ratio of described silicone resin and saturated polyester resin is: 1:(0.1 ~ 0.4).
To better implement the present invention, the solid content of described silicone modified polyester resin is 55 ~ 65%, and proportion is 1.08 ~ 1.14, and acid number is 2 ~ 10mgKOH/g.
Described filler comprises glass powder, chromium sesquioxide and china clay, by weight percentage, described glass powder is 15 ~ 35%, chromium sesquioxide is 2 ~ 5%, china clay is 3 ~ 6%, the glass powder that the present invention relates to, chromium sesquioxide and china clay are technical grade, have the characteristic increasing hardness, improve component wear resistance.
To better implement the present invention, described filler also comprises aluminium powder and talcum powder, and by weight percentage, described filler comprises: the glass powder of 30%, the chromium sesquioxide of 3%, the china clay of 4%, the aluminium powder of 8% and 1% talcum powder.
The filler that the present invention relates to also comprises following situation: described filler also comprises aluminium powder and talcum powder, and by weight percentage, described filler comprises: the glass powder of 29%, the chromium sesquioxide of 2%, the china clay of 3%, the aluminium powder of 10% and 2% talcum powder.
The glass powder that the present invention relates to is glass powder with low melting point, and described glass powder is lead glass powder, boron glass powder or phosphate glass powder.
Described pigment comprises titanium dioxide and white carbon black, and the mass ratio of described titanium dioxide and white carbon black is (1 ~ 3): 1, and in actual fabrication process, titanium dioxide and white carbon black adopt suitable proportion to mix, and have good colouration, covering and weather resistance.
The present invention also proposes a kind of manufacture craft of anti weathering steel, comprises the steps:
A: use base layer dope to be coated on the top layer of pre-coating film steel plate, coating thickness is 3 ~ 8 μm, has applied rear feeding electric furnace and has toasted, after baking 1 ~ 3h, obtains basic unit's film steel plate;
B: use surface coating material to be coated on the top layer of basic unit's film steel plate, coating thickness is 5 ~ 15 μm, has applied rear feeding electric furnace and has toasted, after baking 2.5 ~ 6h, takes out and is cooled to room temperature, obtaining anti weathering steel.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the present invention is the base-material using silicone modified polyester resin as base layer dope and surface coating material, and be aided with other auxiliary agents and be prepared from, in the present invention, silicone modified polyester resin is due to its excellent heat resisting temperature, to excellent adhesion and the processibility of metal material, excellent solvent resistance and good high hot hardness etc., can be used for being sprayed on iron material, the metallic surface such as aluminium or stainless steel, and be widely used in petroleum refinement stove, aluminium refines stove, engine exhaust system, silencer for motor vehicles etc. are on the heat-stable material under hot operation state for a long time.
(2) silicone modified polyester resin that the present invention relates to is as properties-correcting agent by silicone resin, obtain through polycondensation with saturated polyester resin, in the present invention, silicone modified polyester resin has the advantage of silicone resin and saturated polyester resin concurrently, there is good resistance toheat, under normal circumstances, the high temperature resistant temperature of silicone modified polyester resin is 180 ~ 250 DEG C.
(3) in the present invention, silicone resin and saturated polyester resin adopt 1:(0.1 ~ 0.4) mass ratio react obtained silicone modified polyester resin, silicone resin content is more, assessment is carried out to its film thing known, by this coating composition spray obtain its thermotolerance of class coating material and hot hardness better, therefore, be applicable to petroleum refinement stove, aluminium refine stove, product that engine exhaust system, silencer for motor vehicle etc. are under hot operation state for a long time time best results.
(4) filler that the present invention selects has glass powder, talcum powder, aluminium powder etc. can strengthen the composition of the resistance to elevated temperatures of coating, anti crack performance and corrosion resistance nature, and prepare by suitable proportion, fully taken into account the overlay film situation of various filler to base layer dope and surface coating material, practical effect is good.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1:
The anti weathering steel that the present embodiment relates to adopts base layer dope and surface coating material successively through coating, baking and obtaining by pre-coating film steel plate, wherein, base layer dope is coated on the top layer of pre-coating film steel plate, and forms basic unit's film, by weight percentage, base layer dope comprises following component:
Silicone modified polyester resin: 30%; Filler: 20%;
Silicone coupling agents: 1%; Phthalate: 0.5%;
Xylene solvent: 48.5%.
Surface coating material is coated on the top layer of basic unit's film, and forms top layer film, and by weight percentage, described surface coating material comprises following component:
Silicone modified polyester resin: 40%; Pigment: 10%;
Polyamide curing agent: 5%; Filler: 10%;
Silicone coupling agents: 1.2%; Xylene solvent: 33.8%.
Below further describing that above-mentioned component is formed:
Silicone modified polyester resin: by silicone resin as properties-correcting agent, obtains through polycondensation with saturated polyester resin, and wherein, the mass ratio of silicone resin and saturated polyester resin is: 1:0.1.
Pigment: comprise titanium dioxide and white carbon black, wherein, the mass ratio of titanium dioxide and white carbon black is 1:1.
Filler: comprise lead glass powder, chromium sesquioxide and china clay, by weight percentage, lead glass powder is 15%, chromium sesquioxide is 2%, china clay is 3%.
The preparation technology of the anti weathering steel that the present embodiment relates to is as follows:
Adopt base layer dope and surface coating material successively through coating, baking and obtain primarily of pre-coating film steel plate, wherein, coating, toast and comprise the steps:
A: use base layer dope to be coated on the top layer of pre-coating film steel plate, coating thickness is 3 μm, has applied rear feeding electric furnace and has toasted, after toasting 1h, obtains basic unit's film steel plate at the temperature of 180 DEG C;
B: use surface coating material to be coated on the top layer of basic unit's film steel plate, coating thickness is 5 μm, has applied rear feeding electric furnace and has toasted, after toasting 2.5h, taken out and be cooled to room temperature at the temperature of 180 DEG C, obtains anti weathering steel.
Embodiment 2:
The anti weathering steel that the present embodiment relates to adopts base layer dope and surface coating material successively through coating, baking and obtaining by pre-coating film steel plate, wherein, base layer dope is coated on the top layer of pre-coating film steel plate, and forms basic unit's film, by weight percentage, base layer dope comprises following component:
Silicone modified polyester resin: 50%; Filler: 46%;
Silicone coupling agents: 2%; Phthalate: 1%;
Xylene solvent: 1%.
Surface coating material is coated on the top layer of basic unit's film, and forms top layer film, and by weight percentage, described surface coating material comprises following component:
Silicone modified polyester resin: 60%; Pigment: 15%;
Polyamide curing agent: 7%; Filler: 15%;
Silicone coupling agents: 1.8%; Xylene solvent: 1.2%.
Below further describing that above-mentioned component is formed:
Silicone modified polyester resin: by silicone resin as properties-correcting agent, obtains through polycondensation with saturated polyester resin, and wherein, the mass ratio of silicone resin and saturated polyester resin is: 1:0.4.
Pigment: comprise titanium dioxide and white carbon black, wherein, the mass ratio of titanium dioxide and white carbon black is 3:1.
Filler: comprise boron glass powder, chromium sesquioxide, china clay, aluminium powder and talcum powder, by weight percentage, boron glass powder is 30%, chromium sesquioxide is 3%, china clay is 4%, aluminium powder is 8%, talcum powder is 1%.
The preparation technology of the anti weathering steel that the present embodiment relates to is as follows:
Adopt base layer dope and surface coating material successively through coating, baking and obtain primarily of pre-coating film steel plate, wherein, coating, toast and comprise the steps:
A: use base layer dope to be coated on the top layer of pre-coating film steel plate, coating thickness is 8 μm, has applied rear feeding electric furnace and has toasted, after toasting 3h, obtains basic unit's film steel plate at the temperature of 180 DEG C;
B: use surface coating material to be coated on the top layer of basic unit's film steel plate, coating thickness is 15 μm, has applied rear feeding electric furnace and has toasted, after toasting 6h, taken out and be cooled to room temperature at the temperature of 180 DEG C, obtains anti weathering steel.
Embodiment 3:
The anti weathering steel that the present embodiment relates to adopts base layer dope and surface coating material successively through coating, baking and obtaining by pre-coating film steel plate, wherein, base layer dope is coated on the top layer of pre-coating film steel plate, and forms basic unit's film, by weight percentage, base layer dope comprises following component:
Silicone modified polyester resin: 45%; Filler: 46%;
Silicone coupling agents: 1.5%; Phthalate: 0.5%;
Xylene solvent: 7%.
Surface coating material is coated on the top layer of basic unit's film, and forms top layer film, and by weight percentage, described surface coating material comprises following component:
Silicone modified polyester resin: 55%; Pigment: 12%;
Polyamide curing agent: 6%; Filler: 14%;
Silicone coupling agents: 1.5%; Xylene solvent: 11.5%.
Below further describing that above-mentioned component is formed:
Silicone modified polyester resin: by silicone resin as properties-correcting agent, obtains through polycondensation with saturated polyester resin, and wherein, the mass ratio of silicone resin and saturated polyester resin is: 1:0.3.
Pigment: comprise titanium dioxide and white carbon black, wherein, the mass ratio of titanium dioxide and white carbon black is 2:1.
Filler: comprise phosphate glass powder, chromium sesquioxide, china clay, aluminium powder and talcum powder, by weight percentage, phosphate glass powder is 29%, chromium sesquioxide is 2%, china clay is 3%, aluminium powder is 10%, talcum powder is 2%.
The preparation technology of the anti weathering steel that the present embodiment relates to is as follows:
Adopt base layer dope and surface coating material successively through coating, baking and obtain primarily of pre-coating film steel plate, wherein, coating, toast and comprise the steps:
A: use base layer dope to be coated on the top layer of pre-coating film steel plate, coating thickness is 5 μm, has applied rear feeding electric furnace and has toasted, after toasting 2h, obtains basic unit's film steel plate at the temperature of 180 DEG C;
B: use surface coating material to be coated on the top layer of basic unit's film steel plate, coating thickness is 10 μm, has applied rear feeding electric furnace and has toasted, after toasting 4h, taken out and be cooled to room temperature at the temperature of 180 DEG C, obtains anti weathering steel.
Embodiment 4:
The anti weathering steel that the present embodiment relates to adopts base layer dope and surface coating material successively through coating, baking and obtaining by pre-coating film steel plate, wherein, base layer dope is coated on the top layer of pre-coating film steel plate, and forms basic unit's film, by weight percentage, base layer dope comprises following component:
Silicone modified polyester resin: 40%; Filler: 30%;
Silicone coupling agents: 1.5%; Phthalate: 1%;
Xylene solvent: 27.5%.
Surface coating material is coated on the top layer of basic unit's film, and forms top layer film, and by weight percentage, described surface coating material comprises following component:
Silicone modified polyester resin: 40%; Pigment: 10%;
Polyamide curing agent: 5%; Filler: 10%;
Silicone coupling agents: 1.2%; Xylene solvent: 33.8%.
Below further describing that above-mentioned component is formed:
Silicone modified polyester resin: solid content is 55%, proportion is 1.08, and acid number is 2mgKOH/g.
Pigment: comprise titanium dioxide and white carbon black, wherein, the mass ratio of titanium dioxide and white carbon black is 1:1.
Filler: comprise boron glass powder, chromium sesquioxide and china clay, by weight percentage, boron glass powder is 19%, chromium sesquioxide is 5%, china clay is 6%.
The preparation technology of the anti weathering steel that the present embodiment relates to is as follows:
Adopt base layer dope and surface coating material successively through coating, baking and obtain primarily of pre-coating film steel plate, wherein, coating, toast and comprise the steps:
A: use base layer dope to be coated on the top layer of pre-coating film steel plate, coating thickness is 3 μm, has applied rear feeding electric furnace and has toasted, after toasting 1h, obtains basic unit's film steel plate at the temperature of 180 DEG C;
B: use surface coating material to be coated on the top layer of basic unit's film steel plate, coating thickness is 5 μm, has applied rear feeding electric furnace and has toasted, after toasting 2.5h, taken out and be cooled to room temperature at the temperature of 180 DEG C, obtains anti weathering steel.
Embodiment 5:
The anti weathering steel that the present embodiment relates to adopts base layer dope and surface coating material successively through coating, baking and obtaining by pre-coating film steel plate, wherein, base layer dope is coated on the top layer of pre-coating film steel plate, and forms basic unit's film, by weight percentage, base layer dope comprises following component:
Silicone modified polyester resin: 50%; Filler: 46%;
Silicone coupling agents: 1%; Phthalate: 0.5%;
Xylene solvent: 2.5%.
Surface coating material is coated on the top layer of basic unit's film, and forms top layer film, and by weight percentage, described surface coating material comprises following component:
Silicone modified polyester resin: 60%; Pigment: 15%;
Polyamide curing agent: 7%; Filler: 15%;
Silicone coupling agents: 1.8%; Xylene solvent: 1.2%.
Below further describing that above-mentioned component is formed:
Silicone modified polyester resin: solid content is 65%, proportion is 1.14, and acid number is 10mgKOH/g.
Pigment: comprise titanium dioxide and white carbon black, wherein, the mass ratio of titanium dioxide and white carbon black is 3:1.
Filler: comprise lead glass powder, chromium sesquioxide, china clay, aluminium powder and talcum powder, by weight percentage, lead glass powder is 30%, chromium sesquioxide is 3%, china clay is 4%, aluminium powder is 8%, talcum powder is 1%.
The preparation technology of the anti weathering steel that the present embodiment relates to is as follows:
Adopt base layer dope and surface coating material successively through coating, baking and obtain primarily of pre-coating film steel plate, wherein, coating, toast and comprise the steps:
A: use base layer dope to be coated on the top layer of pre-coating film steel plate, coating thickness is 8 μm, has applied rear feeding electric furnace and has toasted, after toasting 3h, obtains basic unit's film steel plate at the temperature of 180 DEG C;
B: use surface coating material to be coated on the top layer of basic unit's film steel plate, coating thickness is 15 μm, has applied rear feeding electric furnace and has toasted, after toasting 6h, taken out and be cooled to room temperature at the temperature of 180 DEG C, obtains anti weathering steel.
Embodiment 6:
The anti weathering steel that the present embodiment relates to adopts base layer dope and surface coating material successively through coating, baking and obtaining by pre-coating film steel plate, wherein, base layer dope is coated on the top layer of pre-coating film steel plate, and forms basic unit's film, by weight percentage, base layer dope comprises following component:
Silicone modified polyester resin: 35%; Filler: 46%;
Silicone coupling agents: 1.2%; Phthalate: 0.8%;
Xylene solvent: 17%.
Surface coating material is coated on the top layer of basic unit's film, and forms top layer film, and by weight percentage, described surface coating material comprises following component:
Silicone modified polyester resin: 50%; Pigment: 13%;
Polyamide curing agent: 6%; Filler: 11%;
Silicone coupling agents: 1.6%; Xylene solvent: 18.4%.
Below further describing that above-mentioned component is formed:
Silicone modified polyester resin: solid content is 60%, proportion is 1.11, and acid number is 6mgKOH/g.
Pigment: comprise titanium dioxide and white carbon black, wherein, the mass ratio of titanium dioxide and white carbon black is 1.5:1.
Filler: comprise phosphate glass powder, chromium sesquioxide, china clay, aluminium powder and talcum powder, by weight percentage, phosphate glass powder is 9%, chromium sesquioxide is 2%, china clay is 3%, aluminium powder is 10%, talcum powder is 2%.
The preparation technology of the anti weathering steel that the present embodiment relates to is as follows:
Adopt base layer dope and surface coating material successively through coating, baking and obtain primarily of pre-coating film steel plate, wherein, coating, toast and comprise the steps:
A: use base layer dope to be coated on the top layer of pre-coating film steel plate, coating thickness is 6 μm, has applied rear feeding electric furnace and has toasted, after toasting 2h, obtains basic unit's film steel plate at the temperature of 180 DEG C;
B: use surface coating material to be coated on the top layer of basic unit's film steel plate, coating thickness is 12 μm, has applied rear feeding electric furnace and has toasted, after toasting 4h, taken out and be cooled to room temperature at the temperature of 180 DEG C, obtains anti weathering steel.
Embodiment 7:
The anti weathering steel that the present embodiment relates to adopts base layer dope and surface coating material successively through coating, baking and obtaining by pre-coating film steel plate, wherein, base layer dope is coated on the top layer of pre-coating film steel plate, and forms basic unit's film, by weight percentage, base layer dope comprises following component:
Silicone modified polyester resin: 45%; Filler: 46%;
Silicone coupling agents: 1.5%; Phthalate: 0.8%;
Xylene solvent: 6.7%.
Surface coating material is coated on the top layer of basic unit's film, and forms top layer film, and by weight percentage, described surface coating material comprises following component:
Silicone modified polyester resin: 45%; Pigment: 15%;
Polyamide curing agent: 6%; Filler: 13%;
Silicone coupling agents: 1.5%; Xylene solvent: 19.5%.
Below further describing that above-mentioned component is formed:
Silicone modified polyester resin: by silicone resin as properties-correcting agent, obtain through polycondensation with saturated polyester resin, wherein, the mass ratio of silicone resin and saturated polyester resin is: 1:0.2, the solid content of obtained silicone modified polyester resin is 60%, proportion is 1.11, and acid number is 8mgKOH/g.
Pigment: comprise titanium dioxide and white carbon black, wherein, the mass ratio of titanium dioxide and white carbon black is 2:1.
Filler: comprise lead glass powder, chromium sesquioxide, china clay, aluminium powder and talcum powder, by weight percentage, lead glass powder is 30%, chromium sesquioxide is 3%, china clay is 4%, aluminium powder is 8%, talcum powder is 1%.
The preparation technology of the anti weathering steel that the present embodiment relates to is as follows:
Adopt base layer dope and surface coating material successively through coating, baking and obtain primarily of pre-coating film steel plate, wherein, coating, toast and comprise the steps:
A: use base layer dope to be coated on the top layer of pre-coating film steel plate, coating thickness is 4 μm, has applied rear feeding electric furnace and has toasted, after toasting 2h, obtains basic unit's film steel plate at the temperature of 180 DEG C;
B: use surface coating material to be coated on the top layer of basic unit's film steel plate, coating thickness is 8 μm, has applied rear feeding electric furnace and has toasted, after toasting 4h, taken out and be cooled to room temperature at the temperature of 180 DEG C, obtains anti weathering steel.
Embodiment 8:
The anti weathering steel that the present embodiment relates to adopts base layer dope and surface coating material successively through coating, baking and obtaining by pre-coating film steel plate, wherein, base layer dope is coated on the top layer of pre-coating film steel plate, and forms basic unit's film, by weight percentage, base layer dope comprises following component:
Silicone modified polyester resin: 40%; Filler: 46%;
Silicone coupling agents: 1.2%; Phthalate: 0.6%;
Xylene solvent: 12.2%.
Surface coating material is coated on the top layer of basic unit's film, and forms top layer film, and by weight percentage, described surface coating material comprises following component:
Silicone modified polyester resin: 55%; Pigment: 12%;
Polyamide curing agent: 5%; Filler: 15%;
Silicone coupling agents: 1.2%; Xylene solvent: 11.8%.
Below further describing that above-mentioned component is formed:
Silicone modified polyester resin: by silicone resin as properties-correcting agent, obtain through polycondensation with saturated polyester resin, wherein, the mass ratio of silicone resin and saturated polyester resin is: 1:0.1, the solid content of obtained silicone modified polyester resin is 65%, proportion is 1.10, and acid number is 9mgKOH/g.
Pigment: comprise titanium dioxide and white carbon black, wherein, the mass ratio of titanium dioxide and white carbon black is 1:1.
Filler: comprise boron glass powder, chromium sesquioxide, china clay, aluminium powder and talcum powder, by weight percentage, boron glass powder is 9%, chromium sesquioxide is 2%, china clay is 3%, aluminium powder is 10%, talcum powder is 2%.
The preparation technology of the anti weathering steel that the present embodiment relates to is as follows:
Adopt base layer dope and surface coating material successively through coating, baking and obtain primarily of pre-coating film steel plate, wherein, coating, toast and comprise the steps:
A: use base layer dope to be coated on the top layer of pre-coating film steel plate, coating thickness is 5 μm, has applied rear feeding electric furnace and has toasted, after toasting 2, obtains basic unit's film steel plate at the temperature of 180 DEG C;
B: use surface coating material to be coated on the top layer of basic unit's film steel plate, coating thickness is 12 μm, has applied rear feeding electric furnace and has toasted, after toasting 5.5h, taken out and be cooled to room temperature at the temperature of 180 DEG C, obtains anti weathering steel.
The anti weathering steel prepared by above-described embodiment 1 ~ 8 carries out hardness, hot hardness, resistance toheat, acid resistance and alkali resistance and detects, and test result is in table 1.
Table 1
The above is only preferred embodiment of the present invention, and not do any pro forma restriction to the present invention, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present invention, all falls within protection scope of the present invention.
Claims (8)
1. an anti weathering steel, described anti weathering steel adopts base layer dope and surface coating material successively through coating, baking and obtaining by pre-coating film steel plate, it is characterized in that: described base layer dope is coated on the top layer of pre-coating film steel plate, and form basic unit's film, by weight percentage, described base layer dope comprises following component:
Silicone modified polyester resin: 30 ~ 50%, filler: 20 ~ 46%,
Silicone coupling agents: 1 ~ 2%, phthalate: 0.5 ~ 1%,
Xylene solvent: 1 ~ 48.5%;
Described surface coating material is coated on the top layer of basic unit's film, and forms top layer film, and by weight percentage, described surface coating material comprises following component:
Silicone modified polyester resin: 40 ~ 60%; Pigment: 10 ~ 15%;
Polyamide curing agent: 5 ~ 7%; Filler: 10 ~ 15%;
Silicone coupling agents: 1.2 ~ 1.8%; Xylene solvent: 1.2 ~ 33.8%,
Described silicone modified polyester resin is by silicone resin as properties-correcting agent, obtains through polycondensation with saturated polyester resin, and the mass ratio of described silicone resin and saturated polyester resin is: 1:(0.1 ~ 0.4).
2. require a kind of anti weathering steel described in 1 according to power, it is characterized in that: the solid content of described silicone modified polyester resin is 55 ~ 65%, and proportion is 1.08 ~ 1.14, and acid number is 2 ~ 10mgKOH/g.
3., according to a kind of anti weathering steel that power requires described in 1, it is characterized in that: described filler comprises glass powder, chromium sesquioxide and china clay, by weight percentage, described glass powder is 15 ~ 35%, chromium sesquioxide is 2 ~ 5%, china clay is 3 ~ 6%.
4. a kind of anti weathering steel according to claim 3, it is characterized in that: described filler also comprises aluminium powder and talcum powder, by weight percentage, described filler comprises: the glass powder of 30%, the chromium sesquioxide of 3%, the china clay of 4%, the aluminium powder of 8% and 1% talcum powder.
5. a kind of anti weathering steel according to claim 3, it is characterized in that: described filler also comprises aluminium powder and talcum powder, by weight percentage, described filler comprises: the glass powder of 29%, the chromium sesquioxide of 2%, the china clay of 3%, the aluminium powder of 10% and 2% talcum powder.
6. a kind of anti weathering steel according to claim 3, is characterized in that: described glass powder is lead glass powder, boron glass powder or phosphate glass powder.
7. a kind of anti weathering steel according to claim 1, is characterized in that: described pigment comprises titanium dioxide and white carbon black, and the mass ratio of described titanium dioxide and white carbon black is (1 ~ 3): 1.
8. the manufacture craft of a kind of anti weathering steel according to any one of claim 1 ~ 7, is characterized in that: comprise the steps:
A: use base layer dope to be coated on the top layer of pre-coating film steel plate, coating thickness is 3 ~ 8 μm, has applied rear feeding electric furnace and has toasted, after baking 1 ~ 3h, obtains basic unit's film steel plate;
B: use surface coating material to be coated on the top layer of basic unit's film steel plate, coating thickness is 5 ~ 15 μm, has applied rear feeding electric furnace and has toasted, after baking 2.5 ~ 6h, takes out and is cooled to room temperature, obtaining anti weathering steel.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295678A (en) * | 2015-12-04 | 2016-02-03 | 成都锦汇科技有限公司 | Priming paint for color galvanized steel plate |
| CN105295679A (en) * | 2015-12-04 | 2016-02-03 | 成都锦汇科技有限公司 | Lacquer-painted steel plate |
| CN105440903A (en) * | 2015-12-04 | 2016-03-30 | 成都锦汇科技有限公司 | Preparation method of primer coating for colorful steel plate |
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2014
- 2014-12-08 CN CN201410739854.1A patent/CN104497806A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295678A (en) * | 2015-12-04 | 2016-02-03 | 成都锦汇科技有限公司 | Priming paint for color galvanized steel plate |
| CN105295679A (en) * | 2015-12-04 | 2016-02-03 | 成都锦汇科技有限公司 | Lacquer-painted steel plate |
| CN105440903A (en) * | 2015-12-04 | 2016-03-30 | 成都锦汇科技有限公司 | Preparation method of primer coating for colorful steel plate |
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