WO2019052070A1 - Peinture anticorrosion à teneur élevée en matières solides destinée à être utilisée sur des surfaces de structures en acier et procédé de pulvérisation s'y rapportant - Google Patents

Peinture anticorrosion à teneur élevée en matières solides destinée à être utilisée sur des surfaces de structures en acier et procédé de pulvérisation s'y rapportant Download PDF

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Publication number
WO2019052070A1
WO2019052070A1 PCT/CN2017/117129 CN2017117129W WO2019052070A1 WO 2019052070 A1 WO2019052070 A1 WO 2019052070A1 CN 2017117129 W CN2017117129 W CN 2017117129W WO 2019052070 A1 WO2019052070 A1 WO 2019052070A1
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WO
WIPO (PCT)
Prior art keywords
spraying
steel structure
coating
low
parts
Prior art date
Application number
PCT/CN2017/117129
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English (en)
Chinese (zh)
Inventor
钱强
Original Assignee
常熟市方塔涂料化工有限公司
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Filing date
Publication date
Application filed by 常熟市方塔涂料化工有限公司 filed Critical 常熟市方塔涂料化工有限公司
Publication of WO2019052070A1 publication Critical patent/WO2019052070A1/fr

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Classifications

    • 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
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
    • 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
    • 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
    • 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
    • C09D5/10—Anti-corrosive paints containing metal dust
    • C09D5/103—Anti-corrosive paints containing metal dust containing Al
    • 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
    • C09D5/10—Anti-corrosive paints containing metal dust
    • C09D5/106—Anti-corrosive paints containing metal dust containing Zn

Definitions

  • the invention relates to the field of anticorrosive coatings, in particular to a high solids anticorrosive coating for steel structure surface with energy saving and pollution reduction and a spraying method thereof.
  • Anti-corrosion coating protection is the main means to improve the corrosion resistance of rigid structural parts.
  • anti-corrosion coatings such as water-based anti-corrosion coatings, powder anti-corrosion coatings, radiation-curing coatings, etc. These coatings either contain a large amount of volatile solvents or contain toxic components such as lead, hexavalent chromium, etc.
  • the process is complex, using the traditional hot dip plating process, a certain amount of waste water, acid mist, etc. will be generated during the construction process, polluting the environment, and the temperature of hot dip plating is generally between 480 ⁇ 560 ° C, the temperature is high, there is energy consumption Large, environmental pollution and defects such as reduced stiffness after immersion plating of components.
  • the technical problem to be solved by the present invention is to provide a high solids anticorrosive coating for a steel structure surface and a spraying method thereof.
  • the present invention adopts a technical solution to provide a high solids anticorrosive coating for a steel structure surface, comprising the following components by weight:
  • the epoxy resin is an aqueous epoxy resin; and the reactive diluent is an alkyl glycidyl ether.
  • the pigment filler is a mixture of converter dust, nano titanium dioxide and zinc aluminum phosphate in a weight ratio of 10 to 15:1 to 2:3 to 5.
  • the aluminum-zinc alloy powder has a sheet-like structure and has a size of 1.5 to 2 ⁇ m and an average diameter of 40 to 50 ⁇ m.
  • another technical solution adopted by the present invention is to provide a spraying method for a high solids anticorrosive coating for a steel structure surface, comprising the following steps:
  • Low-temperature baking the coating obtained in the step (4) is subjected to low-temperature baking treatment to be pre-cured;
  • the cleaning process includes a degreasing treatment and a degreasing treatment;
  • the process condition of the shot blasting treatment is: using a corundum having a diameter of 0.5 to 1 mm as a meatball.
  • the surface of the steel structural member reaches 30 to 40 ⁇ m.
  • the first spraying method is brush coating, and the coating thickness is 0.3 to 1.5 mm; in the step (4), the second spraying The method is high pressure airless spraying, and the coating thickness is 10 to 50 ⁇ m.
  • the process condition of the low-temperature baking is: a temperature of 300 to 320 ° C, and a time of 1 to 3 h; in the step (5), the The process conditions for low temperature baking are: temperature 240 to 280 ° C, time is 0.5 to 1 h.
  • the vacuum drying condition is a vacuum degree of 0.01 to 0.05 MPa, a time of 1 to 2 hours, and a temperature of 180 to 220 °C.
  • the invention has the beneficial effects that the high-solids anti-corrosion coating for the surface of the steel structure is designed by scientific and rational formula, does not use toxic and harmful components, has low solvent content, low volatility, and has the characteristics of safety and environmental protection; Paints do not produce pollutants such as waste water and smoke during spraying, and have the advantages of reducing the discharge of three wastes; stratified low-temperature baking pre-curing, reducing the curing temperature and effectively saving energy; the anti-corrosion coating and spraying method of the invention are safe Environmental protection, energy conservation, and emission reduction are limited, and the market prospect is broad.
  • a high solids anticorrosive coating for a steel structure surface comprising the following parts by weight:
  • the solvent is in an appropriate amount to have a volume solid content of 70% or more.
  • the epoxy resin is an aqueous epoxy resin
  • the pigment filler is a mixture of converter dust, nano titanium dioxide and zinc aluminum phosphate in a weight ratio of 10:1:3; the pigment filler has environmental protection and corrosion resistance on the one hand, and has fine particle size and nanometer on the other hand.
  • the converter dust of the grade micropowder not only realizes the waste utilization, but after being combined with the resin, curing agent, diluent and other fillers, it is coated on the surface of the steel structure to form a transition between the metal and the anticorrosive paint.
  • the layer is such that the coating is more firmly bonded to the steel structure, thereby greatly enhancing the corrosion resistance of the steel structure surface, improving the service life of the steel and saving steel.
  • the aluminum-zinc alloy powder has a sheet-like structure and has the following dimensions: a sheet thickness of 1.5 to 2 ⁇ m and an average sheet diameter of 40 to 50 ⁇ m; and a shielding function for blocking penetration of the corrosive medium.
  • the reactive diluent is an alkyl glycidyl ether;
  • the auxiliary agent includes a dispersing agent, a leveling agent, an antifoaming agent, an antioxidant, and the like.
  • the steel structure surface is prepared by mechanical mixing of the components of the high solids anticorrosive paint to form an anticorrosive paint.
  • the spraying method of the high solids anticorrosive coating for the surface of the steel structure comprises the following steps:
  • the coating obtained in the step (2) is subjected to low-temperature baking treatment at 300 ° C for 1 h to pre-cure;
  • the high solids anticorrosive coating is sprayed on the steel structure obtained in the step (3) by a secondary spraying process, that is, high pressure airless spraying, so as to form a coating having a thickness of 10 ⁇ m;
  • the coating obtained in the step (4) is baked at a low temperature of 240 ° C for 0.5 h to pre-cure;
  • the anticorrosive coating obtained in the step (5) is dried and solidified under vacuum drying conditions, and the specific vacuum drying conditions are a vacuum degree of 0.01 to 0.05 MPa, a time of 1 hour, and a temperature of 220 °C.
  • a high solids anticorrosive coating for a steel structure surface comprising the following parts by weight:
  • the solvent is in an appropriate amount to have a volume solid content of 75% or more.
  • the epoxy resin is an aqueous epoxy resin
  • the pigment filler is a mixture of converter dust ash, nano titanium dioxide and zinc aluminum phosphate in a weight ratio of 15:2:5; the pigment filler has environmental protection and corrosion resistance on the one hand, and has fine particle size and nanometer on the other hand.
  • the converter dust of the grade micropowder not only realizes waste utilization, but also reacts with resin, curing agent, and dilution.
  • the coating is applied to the surface of the steel structure to form a transition layer between the metal and the anticorrosive coating, so that the coating is more firmly bonded to the steel structure, thereby greatly enhancing the corrosion protection of the steel structure surface. Performance improves the service life of steel and saves steel.
  • the aluminum-zinc alloy powder has a sheet-like structure and has the following dimensions: a sheet thickness of 1.5 to 2 ⁇ m and an average sheet diameter of 40 to 50 ⁇ m; and a shielding function for blocking penetration of the corrosive medium.
  • the reactive diluent is an alkyl glycidyl ether;
  • the auxiliary agent includes a dispersing agent, a leveling agent, an antifoaming agent, an antioxidant, and the like.
  • the steel structure surface is prepared by mechanical mixing of the components of the high solids anticorrosive paint to form an anticorrosive paint.
  • the spraying method of the high solids anticorrosive coating for the surface of the steel structure comprises the following steps:
  • the coating obtained in the step (2) is baked at a low temperature of 320 ° C for 3 h to pre-cure;
  • the high solids anticorrosive coating is sprayed on the steel structure obtained in the step (3) by a double spraying process, that is, high pressure airless spraying, so as to form a coating having a thickness of 50 ⁇ m;
  • the coating obtained in the step (4) is baked at a low temperature of 280 ° C for 1 h to pre-cure;
  • the anti-corrosion coating obtained in the step (5) is dried and solidified under vacuum drying conditions, and the specific vacuum drying conditions are a vacuum degree of 0.01 to 0.05 MPa, a time of 2 hours, and a temperature of 180 °C.
  • the coating obtained by the above method has a bonding strength of 55N, a hardness of 6H, an acid and alkali resistance test for 120 hours, and the coating film does not blister or fall off; the neutral smoke resistance test is 1000 hours, and the coating film does not blister or fall off.
  • the coating formulation does not contain toxic and harmful components that are prohibited in the field, and it has the characteristics of environmental protection and safety;
  • the shot blasting process is used instead of the traditional hot dip coating process, which does not produce pollutants such as waste water and smoke, and has the advantages of reducing the discharge of three wastes;
  • Layer coating and each layer adopts low temperature baking pre-curing, which reduces the curing temperature and saves energy.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)

Abstract

L'invention concerne une peinture anticorrosion à teneur élevée en matières solides destinée à être utilisée sur des surfaces de structures en acier et un procédé de pulvérisation s'y rapportant. La peinture anticorrosion à teneur élevée en matières solides comprend une résine époxy, des pigments et des charges, une poudre d'alliage d'aluminium-zinc, un agent de couplage silane, un diluant activé, un inhibiteur de corrosion, un agent auxiliaire, un agent durcisseur et de l'acide acrylique. Le procédé de pulvérisation comprend : (1) le traitement de la surface de la structure en acier ; (2) une pulvérisation primaire ; (3) une cuisson à basse température ; (4) une pulvérisation secondaire ; (5) une cuisson à basse température ; et (6) un moulage par séchage et durcissement. Avec la peinture anticorrosion à teneur élevée en matières solides destinée à être utilisée sur des surfaces de structures en acier selon l'invention, la conception de la formule est scientifique et raisonnable, aucun ingrédient toxique ou nocif n'est utilisé, la teneur en solvant est faible, la volatilité est faible et la peinture anticorrosion à teneur élevée en matières solides est sans danger et respectueuse de l'environnement. Aucun polluant, tel que de l'eau usée ou de la fumée, n'est produit au cours du processus de pulvérisation de la peinture, le rejet de trois déchets est réduit. La cuisson à basse température et le pré-durcissement en couches sont adoptés, de sorte que la température de durcissement est efficacement réduite et que la consommation d'énergie est efficacement réduite. La peinture anticorrosion et le procédé de pulvérisation sont sans danger et respectueux de l'environnement, permettent des économies d'énergie et une réduction d'émission et ont de vastes perspectives de marché.
PCT/CN2017/117129 2017-09-14 2017-12-19 Peinture anticorrosion à teneur élevée en matières solides destinée à être utilisée sur des surfaces de structures en acier et procédé de pulvérisation s'y rapportant WO2019052070A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710825828.4 2017-09-14
CN201710825828.4A CN107674473A (zh) 2017-09-14 2017-09-14 一种钢结构表面用高固体分防腐涂料及其喷涂方法

Publications (1)

Publication Number Publication Date
WO2019052070A1 true WO2019052070A1 (fr) 2019-03-21

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Cited By (1)

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CN110624790A (zh) * 2019-09-10 2019-12-31 云南固特邦钢塑管道制造有限公司 一种涂塑管道的喷涂工艺

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CN109111776A (zh) * 2018-08-24 2019-01-01 江苏睿中轨道交通装备有限公司 一种锌铝防腐涂料及其制备方法和涂覆工艺
CN112606944A (zh) * 2020-12-18 2021-04-06 武昌船舶重工集团有限公司 一种含环氧内衬的船用低压钢质油、水柜及其制作方法

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US6656607B1 (en) * 1999-09-30 2003-12-02 Dacral Method for anticorrosive coating and treatment of metal parts
CN102732130A (zh) * 2012-07-18 2012-10-17 中国海洋石油总公司 一种适合喷涂的高固体分防腐蚀涂料及其制备方法
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CN106148940A (zh) * 2016-06-30 2016-11-23 宁波江东波莫纳电子科技有限公司 一种环保型高铝锌/硬脂酸银复合涂层的制备方法

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CN104449254A (zh) * 2014-11-20 2015-03-25 南京航空航天大学 海底油气管道防腐处理用含铝锌多元合金水性环氧涂料及制备方法
CN104449223A (zh) * 2014-11-25 2015-03-25 南京航空航天大学 一种铝锌硅环氧复合粉末防腐涂料及其制备方法
CN105295585A (zh) * 2015-11-30 2016-02-03 沈阳工业大学 海洋金属构件防污、防腐处理用新型涂料及其制备方法

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US6656607B1 (en) * 1999-09-30 2003-12-02 Dacral Method for anticorrosive coating and treatment of metal parts
CN102732130A (zh) * 2012-07-18 2012-10-17 中国海洋石油总公司 一种适合喷涂的高固体分防腐蚀涂料及其制备方法
CN102850910A (zh) * 2012-09-16 2013-01-02 广州秀珀化工股份有限公司 一种钢结构用耐核辐射涂料及其制备方法
CN103131305A (zh) * 2013-03-22 2013-06-05 河北联合大学 高固体分防腐涂料及其制备方法
CN103509430A (zh) * 2013-09-27 2014-01-15 无锡阳工机械制造有限公司 一种金属防腐蚀涂料及其制备方法
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110624790A (zh) * 2019-09-10 2019-12-31 云南固特邦钢塑管道制造有限公司 一种涂塑管道的喷涂工艺

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