WO2024045368A1 - Single-component high-permeability anticorrosive paint for rusty surface, and preparation method therefor and use thereof - Google Patents

Single-component high-permeability anticorrosive paint for rusty surface, and preparation method therefor and use thereof Download PDF

Info

Publication number
WO2024045368A1
WO2024045368A1 PCT/CN2022/134177 CN2022134177W WO2024045368A1 WO 2024045368 A1 WO2024045368 A1 WO 2024045368A1 CN 2022134177 W CN2022134177 W CN 2022134177W WO 2024045368 A1 WO2024045368 A1 WO 2024045368A1
Authority
WO
WIPO (PCT)
Prior art keywords
parts
weight
byk
rust
permeability
Prior art date
Application number
PCT/CN2022/134177
Other languages
French (fr)
Chinese (zh)
Inventor
马春风
王磊磊
张国梁
张广照
Original Assignee
华南理工大学
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 华南理工大学 filed Critical 华南理工大学
Publication of WO2024045368A1 publication Critical patent/WO2024045368A1/en

Links

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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/08—Polyurethanes from polyethers
    • 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
    • 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
    • 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
    • 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
    • C09D7/63—Additives non-macromolecular organic

Definitions

  • the invention belongs to the technical field of anti-corrosion coatings, and specifically relates to a single-component high-permeability rust-bearing anti-corrosion coating and its preparation method and application.
  • Corrosion phenomenon is considered a common degradation behavior of unique metallic substrates due to interaction with the surrounding environment and is generally considered unavoidable.
  • coating steel In order to protect steel from corrosion and extend its service life, coating steel has become one of the most economical and effective methods.
  • the rust on the steel In order to obtain excellent corrosion resistance, the rust on the steel must be removed before painting, otherwise the paint film and anti-corrosion effect will be poor due to the continuous expansion of rust. Therefore, rust removal treatment is an important part of the coating process and plays a decisive role in the success or failure of anti-corrosion coating.
  • Rusty anti-corrosion paint can be directly applied to the surface of rusty substrates that cannot be rusted or are not completely rusted. This avoids dust pollution and noise pollution caused by on-site construction and rust removal, reduces the difficulty of on-site construction operations, and reduces Harm to human body. Due to the advantages of solvent-based rust-resistant anti-corrosion coatings, such as easy volatilization, fast curing and drying, and low cost, solvent-based rust-resistant anti-corrosion coatings are still the main ones at present.
  • the primary purpose of the present invention is to provide a single-component high-penetration rust-bearing anti-corrosion coating.
  • the coating of the present invention only requires low surface treatment or even no treatment for rust in the preliminary treatment; in terms of construction, it can be firmly adhered to the rusted surface by being directly applied on it; it can highly penetrate into the deep layers of rust holes, preventing rust for a long time and removing water vapor. "Fixed" and unable to penetrate the coating, it can strengthen the strength of the rusted surface and obtain a high-strength solidified surface that requires almost no maintenance. In addition, simple surface treatment in advance can reduce the entire anti-corrosion cost.
  • Another object of the present invention is to provide a method for preparing the above-mentioned one-component high-permeability rust-bearing anti-corrosion coating.
  • Another object of the present invention is to provide the application of the above-mentioned one-component high-permeability rust-bearing anti-corrosion coating.
  • a one-component high-penetration rust-bearing anti-corrosion coating is prepared from the following components in parts by weight:
  • the auxiliary agents include: dispersant, thixotropic agent, and defoaming agent.
  • the polyurethane prepolymer is 30 to 50 parts
  • the wetting solvent is 30 to 40 parts
  • the pigments and fillers are 10 to 20 parts
  • the water removal enhancer is 0.25 to 20 parts
  • the additives are 1.75 to 4.75; More preferably, it is 30 to 40 parts of polyurethane prepolymer, 30 to 40 parts of wetting solvent, 10 to 20 parts of pigments and fillers, 5 to 18 parts of water removal enhancer, and 2 to 4.75 parts of additives.
  • auxiliaries 0.25 to 2 parts by weight of dispersant, 0.75 to 1.5 parts by weight of thixotropic agent, and 0.5 to 3 parts by weight of defoaming agent; more preferably, 0.5 to 1 part by weight of dispersant and 0.75 parts by weight of thixotropic agent. ⁇ 1 part by weight, defoaming agent 0.5 ⁇ 3 parts by weight.
  • the polyurethane prepolymer is obtained by reacting isocyanate monomer and polyol, wherein isocyanate accounts for 30 to 90 wt% of the polyurethane prepolymer; preferably 50 to 67 wt%.
  • the isocyanate monomer is polymethylene polyphenyl polyisocyanate, diphenylmethane-4,4'-diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, benzene diisocyanate At least one of methyl diisocyanate, cyclohexane dimethylene diisocyanate, 4,4′-dicyclohexylmethane diisocyanate, tetramethylxylylene diisocyanate and toluene diisocyanate; the polyvalent The alcohol is at least one of polyoxypropylene ether polyol, polytetrahydrofuran polyol, polyether polyol and polyolefin polyol.
  • the molecular weight of the polyol is 800 to 8000 (weight average).
  • the wetting solvent is at least one of vegetable oil, aromatic solvent oil, alkane solvent oil, tributyl citrate, petroleum hydrogenated light fraction (CAS: 64742-47-8), petroleum ether and mineral oil.
  • the vegetable oil is at least one of castor oil, raw tung oil, cooked tung oil, soybean oil, peanut oil, orange oil, rapeseed oil and epoxidized soybean oil
  • the alkane solvent oil includes naphthenic solvent oil and non-cycloalkane solvent Solvent oil.
  • the pigment and filler is at least one of mica iron oxide, aluminum powder, zinc powder, aluminum oxide, zinc oxide, graphene, aluminum silver paste, talc powder, calcium carbonate and barium sulfate.
  • the water removal enhancer is at least one of oxazolidines and aldimines, specifically at least one of Incozol 2, Incozol 4, Incozol EH, Incozol LV, Aldirez BH and Aldirez A, except for the above.
  • Water enhancers are all products of Incorez Ltd.
  • the structure of the water removal enhancer is as follows:
  • the dispersant is at least one of BYK-108, BYK-110, BYK-116, BYK-163, BYK-180, BYK-190 and BYK-9076.
  • the thixotropic agent is at least one of polyamide wax, organic bentonite, asbestos and fumed silica.
  • the defoaming agent is at least one of BYK-088, BYK-141, BYK-057, BYK-065, BYK-A530, BYK-A555 and BYK-1790.
  • the preparation method of the above-mentioned one-component high-permeability rust-bearing anti-corrosion coating includes the following steps:
  • step (3) Add pigments, fillers and additives to step (2) and mix evenly to obtain a single-component high-penetration rust-bearing anti-corrosion coating.
  • the inert gas in step (1) is at least one of nitrogen and rare gases.
  • the coating of the present invention can be directly painted on rusty or corroded steel substrates to achieve excellent protective effects.
  • the present invention has the following advantages and beneficial effects:
  • the one-component high-permeability rust-bearing anti-corrosion coating of the present invention belongs to a one-component reaction. There is no need to mix or add any catalyst during use. It is easy to use and can save a lot of time and manpower.
  • the one-component high-permeability rust-resistant anti-corrosion coating of the present invention has the advantages of low viscosity, high penetration, high adhesion, etc., and can penetrate into all "capillary pores" of the metal. During the “curing process” of the coating, it comes into contact with all The “water vapor” combines and fills all the voids, thereby preventing rust.
  • the single-component high-permeability rust-bearing anti-corrosion coating of the present invention generates amine through the reaction of the water removal enhancer with the moisture in the atmosphere, and the amine reacts with the NCO group in the polyurethane prepolymer to obtain a single-component polyurea.
  • the resin (which needs to be sealed and stored when not in use) has better mechanical properties and solvent resistance than traditional single-component polyurethane resin, making the coating highly hard, wear-resistant and resistant to corrosive ions. It has strong barrier ability and strong anti-corrosion ability.
  • the one-component high-permeability rust-bearing anti-corrosion coating of the present invention utilizes the moist penetration effect of the coating on loose rust to divide and surround the rust in the coating to make it inactive. At the same time, it uses pigments and fillers to stabilize and dull the rust. to achieve protective effects.
  • the conditions should be followed according to conventional conditions or conditions recommended by the manufacturer.
  • the raw materials, reagents, etc. that are not specified by the manufacturer are all conventional products that can be purchased commercially.
  • Polymer then add 15 parts by weight of raw tung oil, 15 parts by weight of cooked tung oil, 0.25 parts by weight of Aldirez A, 10 parts by weight of aluminum silver paste, 8 parts by weight of aluminum powder, 1 part by weight of polyamide wax, 0.25 parts by weight of BYK-116, Mix 0.5 parts by weight of BYK-057 at room temperature using a high-speed disperser at 150 rpm to obtain a single-component high-permeability rust-bearing anti-corrosion coating. The resulting material is applied to a 70*150cm steel plate and tinplate.
  • Polyurethane prepolymer then add 20 parts by weight of petroleum hydrogenated light distillate (CAS: 64742-47-8), 15 parts by weight of tributyl citrate, 10 parts by weight of Incozol EH, 0.25 parts by weight of Aldirez A, and 5 parts by weight of sulfuric acid Barium, 5 parts by weight of aluminum powder, 5 parts by weight of zinc powder, 1.75 parts by weight of organic bentonite, 2 parts by weight of BYK-9076, 1 part by weight of BYK-1790, mix and stir evenly at room temperature using a high-speed disperser at 150 rpm to obtain a One-component high-penetration rust-resistant anti-corrosion coating, the resulting material is coated on 70*150cm steel plate and tinplate.
  • CAS petroleum hydrogenated light distillate
  • tributyl citrate 10 parts by weight of Incozol EH, 0.25 parts by weight of Aldirez A
  • sulfuric acid Barium 5 parts by weight of aluminum powder, 5 parts by weight of zinc powder,
  • Polyurethane prepolymer then add 18 parts by weight of mineral oil, 12 parts by weight of petroleum hydrogenated light fraction (CAS: 64742-47-8), 5 parts by weight Incozol 2, 5 parts by weight Aldirez BH, 0.25 parts by weight Aldirez A, 10 Aluminum powder, 7 parts by weight aluminum silver paste, 0.75 parts by weight asbestos, 1 part by weight BYK-163, 1 part by weight BYK-A555, mix and stir evenly at room temperature using a high-speed disperser at 150 rpm to obtain a single-component High-penetration rust-resistant anti-corrosion coating, the resulting material is coated on 70*150cm steel plate and tinplate.
  • the material hardness testing method refers to GB/T 6739-2006;
  • the material wear test method refers to GB/T 5478-2008, CS-17, load 1000g, 1000rad, 60r/min;
  • the material contact angle test method refers to GB/T 30447-2013;
  • the material salt spray resistance test method refers to GB/T 1765-1979;
  • the material storage stability test method refers to GB 6753.3-86.
  • the invention is a one-component high-permeability rust-bearing anti-corrosion coating that uses a polyurethane prepolymer and a water-removing enhancer to obtain a single-component polyurea resin with excellent performance through a water-triggered cross-linking reaction. It is made by wetting solvents and pigments and fillers.
  • the coating has properties such as low viscosity, high wetting, and anti-corrosion.
  • the paint can penetrate into the rusted surface and trigger a reaction with water in the air to form a dense cross-linked coating. Therefore, it can be painted with rust, has high adhesion and strong surface tolerance. At the same time, due to the unique functional pigments and fillers, it has excellent salt spray resistance.
  • the use of water-removing enhancer greatly improves the storage stability of the material.
  • the effective content of the material is increased and the curing speed is increased.
  • the coating of the present invention can be directly painted on rusty or corroded steel substrates to achieve excellent anti-corrosion protection effects.

Landscapes

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

Abstract

Disclosed in the present invention are a single-component high-permeability anticorrosive paint for a rusty surface, and a preparation method therefor and the use thereof. The paint comprises the following components in parts by weight: 30-50 parts of a polyurethane prepolymer, 30-50 parts of a wetting solvent, 10-30 parts of a pigment and filler, 0.25-20 parts of a water-removal enhancer, and 1.75-5 parts of an auxiliary agent. The paint of the present invention has the characteristics of low viscosity, high wettability, etc., and can permeate into a rusty surface and undergo a trigger reaction with water in the air to form a compact cross-linked coating, such that the paint can be applied on a rusty surface, and has a high adhesive force and high tolerance to surfaces. Moreover, the paint has excellent salt spray resistance due to its unique functional pigment and filler. The paint can be directly coated on a rusty or corroded steel substrate to achieve a good protection effect.

Description

一种单组分高渗透带锈防腐涂料及其制备方法与应用A one-component high-permeability rust-bearing anti-corrosion coating and its preparation method and application 技术领域Technical field
本发明属于防腐涂料技术领域，具体涉及一种单组分高渗透带锈防腐涂料及其制备方法与应用。The invention belongs to the technical field of anti-corrosion coatings, and specifically relates to a single-component high-permeability rust-bearing anti-corrosion coating and its preparation method and application.
背景技术Background technique
腐蚀现象被认为是独特的金属基材由于与周围环境的相互作用而引起的一种常见的降解行为，通常被认为是不可避免的。为了保护钢铁不受腐蚀，延长其使用寿命，对钢铁使用涂层成为一种最经济和有效的方法。为了获得优良的耐腐蚀性能，涂装前必须把钢材上的铁锈清除干净，否则会由于铁锈的不断膨胀导致漆膜和防腐效果很差。因此，铁锈的除锈处理是涂装工艺的重要组成部分，对防腐蚀涂装的成败起着决定性的作用。但是许多大型建筑、桥梁、船舶、信号塔等复杂的钢结构构件在维修过程中由于受施工条件的限制，难以采用机械化施工方法，只能采用手工或电动工具进行除锈，其结果必然有铁锈和各种腐蚀产物的残留，导致除锈质量难以得到保证、施工艰难、费用巨大。故制备能够直接在锈面上施工的带锈涂料是非常必要的。Corrosion phenomenon is considered a common degradation behavior of unique metallic substrates due to interaction with the surrounding environment and is generally considered unavoidable. In order to protect steel from corrosion and extend its service life, coating steel has become one of the most economical and effective methods. In order to obtain excellent corrosion resistance, the rust on the steel must be removed before painting, otherwise the paint film and anti-corrosion effect will be poor due to the continuous expansion of rust. Therefore, rust removal treatment is an important part of the coating process and plays a decisive role in the success or failure of anti-corrosion coating. However, during the maintenance process of many complex steel structural components such as large buildings, bridges, ships, and signal towers, due to limitations of construction conditions, it is difficult to use mechanized construction methods. Manual or power tools can only be used for rust removal, and the result will inevitably be rust. and the residues of various corrosion products, making it difficult to guarantee the quality of rust removal, making the construction difficult and expensive. Therefore, it is very necessary to prepare rust-bearing paint that can be applied directly on the rust surface.
带锈防腐涂料可以直接涂装在无法除锈或者除锈不彻底的带锈基材表面，避免了现场施工除锈带来的粉尘污染和噪音污染问题，降低了现场施工作业的难度，同时减少对人体的伤害。由于溶剂型带锈防腐涂料有着易挥发、涂料固化干燥快、成本低等优点，当前仍以溶剂型带锈防腐涂料为主。Rusty anti-corrosion paint can be directly applied to the surface of rusty substrates that cannot be rusted or are not completely rusted. This avoids dust pollution and noise pollution caused by on-site construction and rust removal, reduces the difficulty of on-site construction operations, and reduces Harm to human body. Due to the advantages of solvent-based rust-resistant anti-corrosion coatings, such as easy volatilization, fast curing and drying, and low cost, solvent-based rust-resistant anti-corrosion coatings are still the main ones at present.
综上，传统防腐涂料仅仅让涂料“粘”在表面上，无法让已经锈蚀的表面其锈蚀情况得到控制，因为锈蚀的表面有无数的锈蚀孔，深入到表面以下；孔中仍有水汽或甚至于有霉菌，会让锈蚀持续进行，只有短暂防锈蚀的功效，根本无法有效的长时间防止锈蚀的恶化且施工后需要经常性的维护、补强。国内目前带锈涂料产品配方单一、应用局限性大、效果不持久，多数使用的带锈涂料都通过进口，其价格过高。因此研制出一种高渗透、高附着力且环境适应性优异的带锈涂料对于各类工程装备和设施的腐蚀防护等有着重要的意义。To sum up, traditional anti-corrosion coatings only make the coating "stick" to the surface, and cannot control the corrosion of the already corroded surface, because the corroded surface has countless rust holes, which go deep below the surface; there is still water vapor or even water in the holes. Due to the presence of mold, corrosion will continue. It has only a short-term anti-rust effect and cannot effectively prevent the deterioration of rust for a long time. Regular maintenance and reinforcement are required after construction. At present, domestic rust-bearing paint products have a single formula, large application limitations, and short-lasting effects. Most of the rust-bearing paints used are imported, and their prices are too high. Therefore, the development of a rust-bearing coating with high penetration, high adhesion and excellent environmental adaptability is of great significance for the corrosion protection of various engineering equipment and facilities.
发明内容Contents of the invention
为解决现有技术的缺点和不足之处，本发明的首要目的在于提供一种单组分高渗透带锈防腐涂料。In order to solve the shortcomings and shortcomings of the prior art, the primary purpose of the present invention is to provide a single-component high-penetration rust-bearing anti-corrosion coating.
本发明所述涂料在先期处理上仅仅需要对锈蚀做低表面处理甚至不用处理；施工方面直接涂在锈蚀的表面可以牢固的附着；能够高渗透入锈蚀孔洞的深层，长时间防止锈蚀并将水汽“固定”而无法穿透涂层从而可以加强被锈蚀表面的强度，得到高强度的固化表面，几乎不需要任何的维护，加上简单的先期表面处理，降低整个防锈蚀的成本。The coating of the present invention only requires low surface treatment or even no treatment for rust in the preliminary treatment; in terms of construction, it can be firmly adhered to the rusted surface by being directly applied on it; it can highly penetrate into the deep layers of rust holes, preventing rust for a long time and removing water vapor. "Fixed" and unable to penetrate the coating, it can strengthen the strength of the rusted surface and obtain a high-strength solidified surface that requires almost no maintenance. In addition, simple surface treatment in advance can reduce the entire anti-corrosion cost.
本发明的另一目的在于提供上述一种单组分高渗透带锈防腐涂料的制备方法。Another object of the present invention is to provide a method for preparing the above-mentioned one-component high-permeability rust-bearing anti-corrosion coating.
本发明的再一目的在于提供上述一种单组分高渗透带锈防腐涂料的应用。Another object of the present invention is to provide the application of the above-mentioned one-component high-permeability rust-bearing anti-corrosion coating.
本发明目的通过以下技术方案实现：The object of the present invention is achieved through the following technical solutions:
一种单组分高渗透带锈防腐涂料，按重量份数计，由以下组分制备而成：A one-component high-penetration rust-bearing anti-corrosion coating is prepared from the following components in parts by weight:
Figure PCTCN2022134177-appb-000001
Figure PCTCN2022134177-appb-000001
所述助剂包括：分散剂、触变剂、消泡剂。The auxiliary agents include: dispersant, thixotropic agent, and defoaming agent.
优选地，按重量份数计，所述聚氨酯预聚物30～50份，润湿溶剂30～40份，颜填料10～20份，除水增强剂0.25～20份，助剂1.75～4.75；更优选为聚氨酯预聚物30～40份，润湿溶剂30～40份，颜填料10～20份，除水增强剂5～18份，助剂2～4.75。Preferably, in parts by weight, the polyurethane prepolymer is 30 to 50 parts, the wetting solvent is 30 to 40 parts, the pigments and fillers are 10 to 20 parts, the water removal enhancer is 0.25 to 20 parts, and the additives are 1.75 to 4.75; More preferably, it is 30 to 40 parts of polyurethane prepolymer, 30 to 40 parts of wetting solvent, 10 to 20 parts of pigments and fillers, 5 to 18 parts of water removal enhancer, and 2 to 4.75 parts of additives.
优选地，所述助剂中，分散剂0.25～2重量份，触变剂0.75～1.5重量份，消泡剂0.5～3重量份；更优选为分散剂0.5～1重量份，触变剂0.75～1重量份，消泡剂0.5～3重量份。Preferably, among the auxiliaries, 0.25 to 2 parts by weight of dispersant, 0.75 to 1.5 parts by weight of thixotropic agent, and 0.5 to 3 parts by weight of defoaming agent; more preferably, 0.5 to 1 part by weight of dispersant and 0.75 parts by weight of thixotropic agent. ~1 part by weight, defoaming agent 0.5~3 parts by weight.
优选地，所述聚氨酯预聚物由异氰酸酯单体和多元醇反应得到，其中异氰酸酯占聚氨酯预聚物的30～90wt％；优选为50～67wt％。Preferably, the polyurethane prepolymer is obtained by reacting isocyanate monomer and polyol, wherein isocyanate accounts for 30 to 90 wt% of the polyurethane prepolymer; preferably 50 to 67 wt%.
更优选地，所述异氰酸酯单体为多亚甲基多苯基多异氰酸酯、二苯基甲烷-4,4′-二异氰酸酯、六亚甲基二异氰酸酯、异佛尔酮二异氰酸酯、苯二亚甲基二异氰酸酯、环己烷二亚甲基二异氰酸酯、4,4′-二环己基甲烷二异氰酸酯、四甲基苯二亚甲基二异氰酸酯和甲苯二异氰酸酯中的至少一种；所述多元醇为聚氧化丙烯醚多元醇、聚四氢呋喃多元醇、聚醚多元醇和聚烯烃多元醇中的至少一种。More preferably, the isocyanate monomer is polymethylene polyphenyl polyisocyanate, diphenylmethane-4,4'-diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, benzene diisocyanate At least one of methyl diisocyanate, cyclohexane dimethylene diisocyanate, 4,4′-dicyclohexylmethane diisocyanate, tetramethylxylylene diisocyanate and toluene diisocyanate; the polyvalent The alcohol is at least one of polyoxypropylene ether polyol, polytetrahydrofuran polyol, polyether polyol and polyolefin polyol.
更优选地，所述多元醇的分子量为800～8000(重均)。More preferably, the molecular weight of the polyol is 800 to 8000 (weight average).
优选地，所述润湿溶剂为植物油、芳烃溶剂油、烷烃溶剂油、柠檬酸三丁酯、石油加氢轻馏分(CAS：64742-47-8)、石油醚和矿物油中的至少一种；所述植物油为蓖麻油、生桐油、熟桐油、大豆油、花生油、橙油、菜籽油和环氧大豆油中的至少一种；所述烷烃溶剂油包括环烷烃溶剂油和非环烷烃溶剂油。Preferably, the wetting solvent is at least one of vegetable oil, aromatic solvent oil, alkane solvent oil, tributyl citrate, petroleum hydrogenated light fraction (CAS: 64742-47-8), petroleum ether and mineral oil. ; The vegetable oil is at least one of castor oil, raw tung oil, cooked tung oil, soybean oil, peanut oil, orange oil, rapeseed oil and epoxidized soybean oil; the alkane solvent oil includes naphthenic solvent oil and non-cycloalkane solvent Solvent oil.
优选地，所述颜填料为云母氧化铁、铝粉、锌粉、氧化铝、氧化锌、石墨烯、铝银浆、滑石粉、碳酸钙和硫酸钡中的至少一种。Preferably, the pigment and filler is at least one of mica iron oxide, aluminum powder, zinc powder, aluminum oxide, zinc oxide, graphene, aluminum silver paste, talc powder, calcium carbonate and barium sulfate.
优选地，所述除水增强剂为噁唑烷和醛亚胺中的至少一种，具体为Incozol 2、Incozol 4、Incozol EH、Incozol LV、Aldirez BH和Aldirez A中的至少一种，上述除水增强剂均为Incorez Ltd公司的产品。Preferably, the water removal enhancer is at least one of oxazolidines and aldimines, specifically at least one of Incozol 2, Incozol 4, Incozol EH, Incozol LV, Aldirez BH and Aldirez A, except for the above. Water enhancers are all products of Incorez Ltd.
所述除水增强剂结构如下：The structure of the water removal enhancer is as follows:
Figure PCTCN2022134177-appb-000002
Figure PCTCN2022134177-appb-000002
优选地，所述分散剂为BYK-108、BYK-110、BYK-116、BYK-163、BYK-180、BYK-190和BYK-9076中的至少一种。Preferably, the dispersant is at least one of BYK-108, BYK-110, BYK-116, BYK-163, BYK-180, BYK-190 and BYK-9076.
优选地，所述触变剂为聚酰胺腊、有机膨润土、石棉和气相二氧化硅中的至少一种。Preferably, the thixotropic agent is at least one of polyamide wax, organic bentonite, asbestos and fumed silica.
优选地，所述消泡剂为BYK-088、BYK-141、BYK-057、BYK-065、BYK-A530、BYK-A555和BYK-1790中的至少一种。Preferably, the defoaming agent is at least one of BYK-088, BYK-141, BYK-057, BYK-065, BYK-A530, BYK-A555 and BYK-1790.
上述一种单组分高渗透带锈防腐涂料的制备方法，包括以下步骤：The preparation method of the above-mentioned one-component high-permeability rust-bearing anti-corrosion coating includes the following steps:
(1)在惰性气体保护下，异氰酸酯单体和多元醇于70～80℃下1～2小时，得到聚氨酯预聚物；(1) Under the protection of inert gas, heat isocyanate monomer and polyol at 70-80°C for 1-2 hours to obtain a polyurethane prepolymer;
(2)将聚氨酯预聚物、润湿溶剂、除水增强剂在常温下混合均匀；(2) Mix the polyurethane prepolymer, wetting solvent, and water removal enhancer evenly at room temperature;
(3)将颜填料和助剂加入步骤(2)中，混合均匀，得到单组分高渗透带锈防腐涂料。(3) Add pigments, fillers and additives to step (2) and mix evenly to obtain a single-component high-penetration rust-bearing anti-corrosion coating.
步骤(1)所述惰性气体为氮气和稀有气体中的至少一种。The inert gas in step (1) is at least one of nitrogen and rare gases.
上述一种单组分高渗透带锈防腐涂料在防腐领域中的应用。The application of the above-mentioned one-component high-penetration rust-bearing anti-corrosion coating in the field of anti-corrosion.
本发明所述涂料可直接涂刷在生锈或腐蚀的钢铁基材上，实现优良的防护效果。The coating of the present invention can be directly painted on rusty or corroded steel substrates to achieve excellent protective effects.
与现有技术相比，本发明具有以下优点及有益效果：Compared with the existing technology, the present invention has the following advantages and beneficial effects:
(1)本发明所述单组分高渗透带锈防腐涂料属于单组分反应，在使用时不需再调合，也不需再添加任何的催化剂，使用方便并可大量节省时间及人力。(1) The one-component high-permeability rust-bearing anti-corrosion coating of the present invention belongs to a one-component reaction. There is no need to mix or add any catalyst during use. It is easy to use and can save a lot of time and manpower.
(2)本发明所述单组分高渗透带锈防腐涂料具有低粘度、高渗透、高附着等优点，能渗入到金属的所有“毛细孔”中，在涂料“固化过程”与所有接触的“水气”结合并将所有的空隙充填，进而阻止锈蚀。(2) The one-component high-permeability rust-resistant anti-corrosion coating of the present invention has the advantages of low viscosity, high penetration, high adhesion, etc., and can penetrate into all "capillary pores" of the metal. During the "curing process" of the coating, it comes into contact with all The "water vapor" combines and fills all the voids, thereby preventing rust.
(3)本发明所述单组分高渗透带锈防腐涂料，通过除水增强剂与大气中的水分反应后生成胺，胺与聚氨酯预聚物中的NCO基团反应得到单组分聚脲树脂(不使用时需要密封保存单组分高渗透带锈防腐涂料)，力学性能以及耐溶剂性能都优于传统单组分聚氨酯树脂，使得涂层的硬度高、耐磨性好，对腐蚀离子的阻隔能力强，防腐能力强。(3) The single-component high-permeability rust-bearing anti-corrosion coating of the present invention generates amine through the reaction of the water removal enhancer with the moisture in the atmosphere, and the amine reacts with the NCO group in the polyurethane prepolymer to obtain a single-component polyurea. The resin (which needs to be sealed and stored when not in use) has better mechanical properties and solvent resistance than traditional single-component polyurethane resin, making the coating highly hard, wear-resistant and resistant to corrosive ions. It has strong barrier ability and strong anti-corrosion ability.
(4)本发明所述单组分高渗透带锈防腐涂料，利用涂料对疏松铁锈的湿润渗透作用，把铁锈分割并包围在涂料中使其失去活性，同时，利用颜填料使铁锈稳定、钝化，从而达到防护作用。(4) The one-component high-permeability rust-bearing anti-corrosion coating of the present invention utilizes the moist penetration effect of the coating on loose rust to divide and surround the rust in the coating to make it inactive. At the same time, it uses pigments and fillers to stabilize and dull the rust. to achieve protective effects.
具体实施方式Detailed ways
下面结合实施例对本发明作进一步详细的描述，但本发明的实施方式不限于此。The present invention will be described in further detail below with reference to examples, but the implementation of the present invention is not limited thereto.
本发明实施例中未注明具体条件者，按照常规条件或者制造商建议的条件进行。所用未注明生产厂商者的原料、试剂等，均为可以通过市售购买获得的常规产品。If no specific conditions are specified in the examples of the present invention, the conditions should be followed according to conventional conditions or conditions recommended by the manufacturer. The raw materials, reagents, etc. that are not specified by the manufacturer are all conventional products that can be purchased commercially.
实施例1Example 1
将10重量份多亚甲基多苯基多异氰酸酯、10重量份二苯甲烷-4,4′-二异氰酸酯、10重量份聚氧化丙烯醚多元醇(重均分子量为1000)在惰性气体保护下于75℃下反应1.5小时得到聚氨酯预聚物，再加入10重量份矿物油、10重量份蓖麻油、20重量份石油醚、10重量份云母氧化铁、10重量份铝粉、10重量份Incozol 2、8重量份Aldirez A、1重量份气相二氧化硅、0.5重量份BYK-108、0.5重量份BYK-088，在常温下使用高速分散机150转速下混合搅拌均匀得到一种单组分高渗透带锈防腐涂料，将所得材料涂在70*150cm钢板和马口铁上。Put 10 parts by weight of polymethylene polyphenyl polyisocyanate, 10 parts by weight of diphenylmethane-4,4'-diisocyanate, and 10 parts by weight of polyoxypropylene ether polyol (weight average molecular weight: 1000) under the protection of inert gas. React at 75°C for 1.5 hours to obtain a polyurethane prepolymer, then add 10 parts by weight of mineral oil, 10 parts by weight of castor oil, 20 parts by weight of petroleum ether, 10 parts by weight of mica iron oxide, 10 parts by weight of aluminum powder, and 10 parts by weight of Incozol 2. 8 parts by weight of Aldirez A, 1 part by weight of fumed silica, 0.5 parts by weight of BYK-108, 0.5 parts by weight of BYK-088, mix and stir evenly at room temperature using a high-speed disperser at 150 rpm to obtain a single-component high-speed dispersant. Penetrate the rust-bearing anti-corrosion paint and apply the resulting material on 70*150cm steel plate and tinplate.
实施例2Example 2
将10重量份二苯基甲烷-4,4′-二异氰酸酯、15重量份六亚甲基二异氰酸酯、15重量份聚四氢呋喃多元醇(重均分子量为2000)在惰性气体保护下于75℃下反应1.5小时得到聚氨酯预聚物，再加入10重量份石油加氢轻馏分(CAS号是64742-47-8)、5重量份蓖麻油、15重量份芳烃溶剂油(1000号溶剂油)、10重量份Incozol 4、5重量份Aldirez BH、0.25重量份Aldirez A、10重量份锌粉、0.75重量份气相二氧化硅、1重量份BYK-110、3重量份BYK-141，在常温下使用高速分散机150转速下混合搅拌均匀得到一种单组分高渗透带锈防腐涂料，将所得材料涂在70*150cm钢板和马口铁上。Put 10 parts by weight of diphenylmethane-4,4'-diisocyanate, 15 parts by weight of hexamethylene diisocyanate, and 15 parts by weight of polytetrahydrofuran polyol (weight average molecular weight: 2000) at 75°C under inert gas protection. React for 1.5 hours to obtain the polyurethane prepolymer, then add 10 parts by weight of petroleum hydrogenated light fraction (CAS number is 64742-47-8), 5 parts by weight of castor oil, 15 parts by weight of aromatic solvent oil (No. 1000 solvent oil), 10 Incozol 4, 5 parts by weight Aldirez BH, 0.25 parts by weight Aldirez A, 10 parts by weight zinc powder, 0.75 parts by weight fumed silica, 1 part by weight BYK-110, 3 parts by weight BYK-141, use high speed at room temperature Mix and stir evenly at 150 rpm of the disperser to obtain a single-component high-penetration rust-bearing anti-corrosion coating. The resulting material is coated on a 70*150cm steel plate and tinplate.
实施例3Example 3
将10重量份异佛尔酮二异氰酸酯、20重量份苯二亚甲基异氰酸酯、20重量份聚醚多元醇(重均分子量为800)在惰性气体保护下于75℃下反应1.5小时得到聚氨酯预聚物，再加入15重量份生桐油、15重量份熟桐油、0.25重量份Aldirez A、10重量份铝银浆、8重量份铝粉、1重量份聚酰胺腊、0.25重量份BYK-116、0.5重量份BYK-057在常温下使用高速分散机150转速下混合搅拌均匀得到一种单组分高渗透带锈防腐涂料，将所得材料涂在70*150cm钢板和马口铁上。10 parts by weight of isophorone diisocyanate, 20 parts by weight of xylylene isocyanate, and 20 parts by weight of polyether polyol (weight average molecular weight: 800) were reacted under inert gas protection at 75°C for 1.5 hours to obtain a polyurethane preform. Polymer, then add 15 parts by weight of raw tung oil, 15 parts by weight of cooked tung oil, 0.25 parts by weight of Aldirez A, 10 parts by weight of aluminum silver paste, 8 parts by weight of aluminum powder, 1 part by weight of polyamide wax, 0.25 parts by weight of BYK-116, Mix 0.5 parts by weight of BYK-057 at room temperature using a high-speed disperser at 150 rpm to obtain a single-component high-permeability rust-bearing anti-corrosion coating. The resulting material is applied to a 70*150cm steel plate and tinplate.
实施例4Example 4
将10重量份环己烷二亚甲基二异氰酸酯、10重量份4,4′-二环己基甲烷二异氰酸酯、10重量份聚烯烃多元醇(重均分子量为4000)在惰性气体保护下于75℃下反应1.5小时得到聚氨酯预聚物，再加入18重量份柠檬酸三丁酯、12重量份环烷烃溶剂油(D100号溶剂油)、20重量份非环烷烃溶剂油(80号溶剂油)、1.25重量份Incozol EH、8重量份锌粉、8重量份铝粉、0.75重量份气相二氧化硅、1重量份BYK-163、1重量份BYK-065，在常温下使用高速分散机150转速下混合搅拌均匀得到一种单组分高渗透带锈防腐涂料，将所得材料涂在70*150cm钢板和马口铁上。10 parts by weight of cyclohexane dimethylene diisocyanate, 10 parts by weight of 4,4′-dicyclohexylmethane diisocyanate, and 10 parts by weight of polyolefin polyol (weight average molecular weight: 4000) were placed under inert gas protection at 75 The polyurethane prepolymer was obtained by reacting for 1.5 hours at ℃, and then added 18 parts by weight of tributyl citrate, 12 parts by weight of naphthenic solvent oil (No. D100 solvent oil), and 20 parts by weight of non-cycloalkane solvent oil (No. 80 solvent oil). , 1.25 parts by weight Incozol EH, 8 parts by weight zinc powder, 8 parts by weight aluminum powder, 0.75 parts by weight fumed silica, 1 part by weight BYK-163, 1 part by weight BYK-065, use a high-speed disperser at 150 rpm at room temperature Mix and stir evenly to obtain a single-component high-permeability rust-bearing anti-corrosion coating, and apply the obtained material on a 70*150cm steel plate and tinplate.
实施例5Example 5
将10重量份四甲基苯二亚甲基二异氰酸酯、5重量份甲苯二异氰酸酯、15重量份聚醚多元醇(重均分子量为6000)在惰性气体保护下于75℃下反应1.5小时得到聚氨酯预聚物，再加入10重量份大豆油、20重量份环氧大豆油、5重量份Aldirez A、1.25重量份Incozol EH、10重量份氧化铝、10重量份氧化锌、10重量份石墨烯、1重量份有机膨润土、1重量份BYK-180、1.75重量份BYK-A530，在常温下使用高速分散机150转速下混合搅拌均匀得到一种单组分高渗透带锈防腐涂料，将所得材料涂在70*150钢板和马口铁上。10 parts by weight of tetramethylxylylene diisocyanate, 5 parts by weight of toluene diisocyanate, and 15 parts by weight of polyether polyol (weight average molecular weight 6000) were reacted under inert gas protection at 75°C for 1.5 hours to obtain polyurethane Prepolymer, then add 10 parts by weight of soybean oil, 20 parts by weight of epoxy soybean oil, 5 parts by weight of Aldirez A, 1.25 parts by weight of Incozol EH, 10 parts by weight of alumina, 10 parts by weight of zinc oxide, 10 parts by weight of graphene, 1 part by weight of organic bentonite, 1 part by weight of BYK-180, and 1.75 parts by weight of BYK-A530 are mixed and stirred evenly at room temperature using a high-speed disperser at 150 rpm to obtain a single-component high-penetration rust-bearing anti-corrosion coating. The resulting material is coated On 70*150 steel plate and tinplate.
实施例6Example 6
将8重量份多亚甲基多苯基多异氰酸酯、12重量份二异氰酸酯MDI多异氰酸酯、12重量份聚醚多元醇(重均分子量为8000)在惰性气体保护下于75℃下反应1.5小时得到聚氨酯预聚物，再加入30重量份芳烃溶剂油(1000号溶剂油)、10重量份Incozol LV、10重量份Aldirez A、8重量份铝银浆、4重量份滑石粉、2重量份碳酸钙、1.5重量份聚酰胺腊、1.5重量份BYK-190、1重量份BYK-A555，在常温下使用高速分散机150转速下混合搅拌均匀得到一种单组分高渗 透带锈防腐涂料，将所得材料涂在70*150cm钢板和马口铁上。Obtained by reacting 8 parts by weight of polymethylene polyphenyl polyisocyanate, 12 parts by weight of diisocyanate MDI polyisocyanate, and 12 parts by weight of polyether polyol (weight average molecular weight: 8000) at 75°C for 1.5 hours under inert gas protection. Polyurethane prepolymer, then add 30 parts by weight of aromatic solvent oil (No. 1000 solvent oil), 10 parts by weight of Incozol LV, 10 parts by weight of Aldirez A, 8 parts by weight of aluminum silver paste, 4 parts by weight of talc powder, and 2 parts by weight of calcium carbonate. , 1.5 parts by weight of polyamide wax, 1.5 parts by weight of BYK-190, and 1 part by weight of BYK-A555, mix and stir evenly at room temperature using a high-speed disperser at 150 rpm to obtain a single-component high-penetration rust-bearing anti-corrosion coating. The material is coated on 70*150cm steel plate and tinplate.
实施例7Example 7
将10重量份多亚甲基多苯基多异氰酸酯、10重量份二苯甲烷二异氰酸酯、15重量份聚烯烃多元醇(重均分子量为4000)在惰性气体保护下于75℃下反应1.5小时得到聚氨酯预聚物，再加入20重量份石油加氢轻馏分(CAS：64742-47-8)、15重量份柠檬酸三丁酯、10重量份Incozol EH、0.25重量份Aldirez A、5重量份硫酸钡、5重量份铝粉、5重量份锌粉、1.75重量份有机膨润土、2重量份BYK-9076、1重量份BYK-1790，在常温下使用高速分散机150转速下混合搅拌均匀得到一种单组分高渗透带锈防腐涂料，将所得材料涂在70*150cm钢板和马口铁上。Obtained by reacting 10 parts by weight of polymethylene polyphenyl polyisocyanate, 10 parts by weight of diphenylmethane diisocyanate, and 15 parts by weight of polyolefin polyol (weight average molecular weight 4000) at 75°C for 1.5 hours under inert gas protection. Polyurethane prepolymer, then add 20 parts by weight of petroleum hydrogenated light distillate (CAS: 64742-47-8), 15 parts by weight of tributyl citrate, 10 parts by weight of Incozol EH, 0.25 parts by weight of Aldirez A, and 5 parts by weight of sulfuric acid Barium, 5 parts by weight of aluminum powder, 5 parts by weight of zinc powder, 1.75 parts by weight of organic bentonite, 2 parts by weight of BYK-9076, 1 part by weight of BYK-1790, mix and stir evenly at room temperature using a high-speed disperser at 150 rpm to obtain a One-component high-penetration rust-resistant anti-corrosion coating, the resulting material is coated on 70*150cm steel plate and tinplate.
实施例8Example 8
将5重量份多亚甲基多苯基多异氰酸酯、20重量份二苯甲烷二异氰酸酯、15重量份聚醚多元醇(重均分子量为2000)在惰性气体保护下于75℃下反应1.5小时得到聚氨酯预聚物，再加入18重量份矿物油、12重量份石油加氢轻馏分(CAS：64742-47-8)、5重量份Incozol 2、5重量份Aldirez BH、0.25重量份Aldirez A、10重量份铝粉、7重量份铝银浆、0.75重量份石棉、1重量份BYK-163、1重量份BYK-A555，在常温下使用高速分散机150转速下混合搅拌均匀得到一种单组分高渗透带锈防腐涂料，将所得材料涂在70*150cm钢板和马口铁上。Obtained by reacting 5 parts by weight of polymethylene polyphenyl polyisocyanate, 20 parts by weight of diphenylmethane diisocyanate, and 15 parts by weight of polyether polyol (weight average molecular weight: 2000) at 75°C for 1.5 hours under inert gas protection. Polyurethane prepolymer, then add 18 parts by weight of mineral oil, 12 parts by weight of petroleum hydrogenated light fraction (CAS: 64742-47-8), 5 parts by weight Incozol 2, 5 parts by weight Aldirez BH, 0.25 parts by weight Aldirez A, 10 Aluminum powder, 7 parts by weight aluminum silver paste, 0.75 parts by weight asbestos, 1 part by weight BYK-163, 1 part by weight BYK-A555, mix and stir evenly at room temperature using a high-speed disperser at 150 rpm to obtain a single-component High-penetration rust-resistant anti-corrosion coating, the resulting material is coated on 70*150cm steel plate and tinplate.
对比例1Comparative example 1
将10重量份多亚甲基多苯基多异氰酸酯、10重量份二苯甲烷-4,4′-二异氰酸酯、10重量份聚氧化丙烯醚多元醇(重均分子量为1000)在惰性气体保护下于75℃下反应1.5小时得到聚氨酯预聚物，再加入10重量份矿物油、10重量份蓖麻油、10重量份石油醚、10重量份云母氧化铁、10重量份铝粉、1重量份气相二氧化硅、0.5重量份BYK-108、0.5重量份BYK-088，在常温下使用高速分散机150转速下混合搅拌均匀得到一种单组分高渗透带锈防腐涂料，将所得材料涂在70*150cm钢板和马口铁上。Put 10 parts by weight of polymethylene polyphenyl polyisocyanate, 10 parts by weight of diphenylmethane-4,4'-diisocyanate, and 10 parts by weight of polyoxypropylene ether polyol (weight average molecular weight: 1000) under the protection of inert gas. React at 75°C for 1.5 hours to obtain a polyurethane prepolymer, then add 10 parts by weight of mineral oil, 10 parts by weight of castor oil, 10 parts by weight of petroleum ether, 10 parts by weight of mica iron oxide, 10 parts by weight of aluminum powder, and 1 part by weight of gas phase Silica, 0.5 parts by weight of BYK-108, and 0.5 parts by weight of BYK-088 are mixed and stirred evenly at room temperature using a high-speed disperser at 150 rpm to obtain a single-component high-penetration rust-resistant anti-corrosion coating. The resulting material is coated at 70 *On 150cm steel plate and tinplate.
对比例2Comparative example 2
将10重量份二苯甲烷-4,4′-二异氰酸酯、15重量份六亚甲基二异氰酸酯、15重量份聚四氢呋喃多元醇(重均分子量为2000)在惰性气体保护下于75℃下反应1.5小时得到聚氨酯预聚物，再加入10重量份石油加氢轻馏分(CAS号是64742-47-8)、5重量份蓖麻油、15重量份芳烃溶剂油(1000号溶剂油)、20重量份Incozol 4、2.5重量份Aldirez BH、25重量份Aldirez A、10重量份锌粉、0.75重量份气相二氧化硅、1重量份BYK-110、3重量份BYK-141，在常温下使用高速分散机150转速下混合搅拌均匀得到一种单组分高渗透带锈防腐涂料，将所得材料涂在70*150cm钢板和马口铁上。React 10 parts by weight of diphenylmethane-4,4'-diisocyanate, 15 parts by weight of hexamethylene diisocyanate, and 15 parts by weight of polytetrahydrofuran polyol (weight average molecular weight: 2000) at 75°C under inert gas protection Obtain the polyurethane prepolymer in 1.5 hours, then add 10 parts by weight of petroleum hydrogenated light fraction (CAS number is 64742-47-8), 5 parts by weight of castor oil, 15 parts by weight of aromatic solvent oil (No. 1000 solvent oil), 20 parts by weight Incozol 4, 2.5 parts by weight Aldirez BH, 25 parts by weight Aldirez A, 10 parts by weight zinc powder, 0.75 parts by weight fumed silica, 1 part by weight BYK-110, 3 parts by weight BYK-141, use high-speed dispersion at room temperature Mix evenly at 150 rpm of the machine to obtain a single-component high-permeability rust-bearing anti-corrosion coating, and apply the obtained material on a 70*150cm steel plate and tinplate.
(1)使用NDJ-5S旋转粘度计测试，25℃；(1) Tested using NDJ-5S rotational viscometer, 25℃;
(2)材料表干时间测试方法参照GB/T 1728-1979；(2) The material surface drying time test method refers to GB/T 1728-1979;
(3)材料柔韧性测试方法参照GB/T 1731-1993；(3) The material flexibility test method refers to GB/T 1731-1993;
(4)材料硬度测试方法参照GB/T 6739-2006；(4) The material hardness testing method refers to GB/T 6739-2006;
(5)材料磨耗测试方法参照GB/T 5478-2008，CS-17，载荷1000g，1000rad，60r/min；(5) The material wear test method refers to GB/T 5478-2008, CS-17, load 1000g, 1000rad, 60r/min;
(6)材料附着力测试方法参照GB/T 5210-2006；(6) Material adhesion test method refers to GB/T 5210-2006;
(7)材料接触角测试方法参照GB/T 30447-2013；(7) The material contact angle test method refers to GB/T 30447-2013;
(8)材料耐盐雾测试方法参照GB/T 1765-1979；(8) The material salt spray resistance test method refers to GB/T 1765-1979;
(9)材料贮存稳定性测试方法参照GB 6753.3-86。(9) The material storage stability test method refers to GB 6753.3-86.
表1 性能测试结果Table 1 Performance test results
Figure PCTCN2022134177-appb-000003
Figure PCTCN2022134177-appb-000003
本发明的一种单组分高渗透带锈防腐涂料，采用聚氨酯预聚物和除水增强剂通过水触发交联反应得到性能优异的单组分聚脲树脂，通过润湿溶剂和颜填料使涂料具有低粘度、高润湿、防腐等特性。该涂料能渗入到锈蚀表面，并与空气中的水发生触发反应，形成致密交联涂层，因此，它可以带锈涂装、附着力高、表面容忍性强。同时，由于独特的功能颜填料，使其具有优异的耐盐雾性能。此外除水增强剂的使用，使材料贮存稳定性大幅提高，同时在贮存稳定性的作用下，材料有效含量提高，固化速度增加。本发明涂料可直接涂刷在生锈或腐蚀的钢铁基 材上，实现优良的防腐防护效果。The invention is a one-component high-permeability rust-bearing anti-corrosion coating that uses a polyurethane prepolymer and a water-removing enhancer to obtain a single-component polyurea resin with excellent performance through a water-triggered cross-linking reaction. It is made by wetting solvents and pigments and fillers. The coating has properties such as low viscosity, high wetting, and anti-corrosion. The paint can penetrate into the rusted surface and trigger a reaction with water in the air to form a dense cross-linked coating. Therefore, it can be painted with rust, has high adhesion and strong surface tolerance. At the same time, due to the unique functional pigments and fillers, it has excellent salt spray resistance. In addition, the use of water-removing enhancer greatly improves the storage stability of the material. At the same time, under the influence of storage stability, the effective content of the material is increased and the curing speed is increased. The coating of the present invention can be directly painted on rusty or corroded steel substrates to achieve excellent anti-corrosion protection effects.
上述实施例为本发明较佳的实施方式，但本发明的实施方式并不受上述实施例的限制，其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, etc. may be made without departing from the spirit and principles of the present invention. All simplifications should be equivalent substitutions, and are all included in the protection scope of the present invention.

Claims (10)

  1. 一种单组分高渗透带锈防腐涂料，其特征在于，按重量份数计，由以下组分制备而成：A one-component high-permeability rust-bearing anti-corrosion coating, which is characterized in that it is prepared from the following components in parts by weight:
    Figure PCTCN2022134177-appb-100001
    Figure PCTCN2022134177-appb-100001
    所述助剂包括：分散剂、触变剂、消泡剂。The auxiliary agents include: dispersant, thixotropic agent, and defoaming agent.
  2. 根据权利要求1所述一种单组分高渗透带锈防腐涂料，其特征在于，所述除水增强剂为噁唑烷和醛亚胺中的至少一种；具体为Incozol 2、Incozol 4、Incozol EH、Incozol LV、Aldirez BH和Aldirez A中的至少一种。A kind of one-component high-permeability rust-resistant anti-corrosion coating according to claim 1, characterized in that the water removal enhancer is at least one of oxazolidine and aldimine; specifically Incozol 2, Incozol 4, At least one of Incozol EH, Incozol LV, Aldirez BH and Aldirez A.
  3. 根据权利要求1所述一种单组分高渗透带锈防腐涂料，其特征在于，所述聚氨酯预聚物由异氰酸酯单体和多元醇反应得到，其中异氰酸酯占聚氨酯预聚物的30～90wt％；A one-component high-permeability rust-resistant anti-corrosion coating according to claim 1, characterized in that the polyurethane prepolymer is obtained by the reaction of isocyanate monomer and polyol, wherein isocyanate accounts for 30 to 90wt% of the polyurethane prepolymer. ;
    所述异氰酸酯单体为多亚甲基多苯基多异氰酸酯、二苯基甲烷-4,4′-二异氰酸酯、六亚甲基二异氰酸酯、异佛尔酮二异氰酸酯、苯二亚甲基二异氰酸酯、环己烷二亚甲基二异氰酸酯、4,4′-二环己基甲烷二异氰酸酯、四甲基苯二亚甲基二异氰酸酯和甲苯二异氰酸酯中的至少一种；所述多元醇为聚氧化丙烯醚多元醇、聚四氢呋喃多元醇、聚醚多元醇和聚烯烃多元醇中的至少一种；The isocyanate monomer is polymethylene polyphenyl polyisocyanate, diphenylmethane-4,4′-diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, and xylylene diisocyanate. , at least one of cyclohexane dimethylene diisocyanate, 4,4′-dicyclohexylmethane diisocyanate, tetramethylxylylene diisocyanate and toluene diisocyanate; the polyol is polyoxygenated At least one of propylene ether polyol, polytetrahydrofuran polyol, polyether polyol and polyolefin polyol;
    所述多元醇的分子量为800～8000。The molecular weight of the polyol is 800-8000.
  4. 根据权利要求1所述一种单组分高渗透带锈防腐涂料，其特征在于，按重量份数计，所述聚氨酯预聚物30～50份，润湿溶剂30～40份，颜填料10～20份，除水增强剂0.25～20份，助剂1.75～4.75；A one-component high-permeability rust-bearing anti-corrosion coating according to claim 1, characterized in that, in parts by weight, the polyurethane prepolymer is 30-50 parts, the wetting solvent is 30-40 parts, and the pigments and fillers are 10 parts. ~20 parts, water removal enhancer 0.25~20 parts, additive 1.75~4.75;
    所述助剂中，分散剂0.25～2重量份，触变剂0.75～1.5重量份，消泡剂0.5～3重量份。Among the auxiliaries, 0.25 to 2 parts by weight of dispersant, 0.75 to 1.5 parts by weight of thixotropic agent, and 0.5 to 3 parts by weight of defoaming agent.
  5. 根据权利要求1所述一种单组分高渗透带锈防腐涂料，其特征在于，所述润湿溶剂为植物油、芳烃溶剂油、烷烃溶剂油、柠檬酸三丁酯、石油加氢轻馏分、石油醚和矿物油中的至少一种；所述植物油为蓖麻油、生桐油、熟桐油、大豆油、花生油、橙油、菜籽油和环氧大豆油中的至少一种；所述烷烃溶剂油包括环烷烃溶剂油和非环烷烃溶剂油。A one-component high-permeability rust-resistant anti-corrosion coating according to claim 1, characterized in that the wetting solvent is vegetable oil, aromatic solvent oil, alkane solvent oil, tributyl citrate, petroleum hydrogenation light fraction, At least one of petroleum ether and mineral oil; the vegetable oil is at least one of castor oil, raw tung oil, cooked tung oil, soybean oil, peanut oil, orange oil, rapeseed oil and epoxidized soybean oil; the alkane solvent Oils include naphthenic solvents and non-naphthenic solvents.
  6. 根据权利要求1所述一种单组分高渗透带锈防腐涂料，其特征在于，所述聚氨酯预聚物由异氰酸酯单体和多元醇反应得到，其中异氰酸酯占聚氨酯预聚物的50～67wt％。A one-component high-permeability rust-resistant anti-corrosion coating according to claim 1, characterized in that the polyurethane prepolymer is obtained by the reaction of isocyanate monomer and polyol, wherein isocyanate accounts for 50-67wt% of the polyurethane prepolymer. .
  7. 根据权利要求1所述一种单组分高渗透带锈防腐涂料，其特征在于，按重量份数计，所述聚氨酯预聚物30～40份，润湿溶剂30～40份，颜填料10～20份，除水增强剂5～18份，助剂2～4.75；A one-component high-permeability rust-bearing anti-corrosion coating according to claim 1, characterized in that, in parts by weight, the polyurethane prepolymer is 30-40 parts, the wetting solvent is 30-40 parts, and the pigments and fillers are 10 parts. ~20 parts, water removal enhancer 5~18 parts, additive 2~4.75 parts;
    所述助剂中，分散剂0.5～1重量份，触变剂0.75～1重量份，消泡剂0.5～3重量份。Among the auxiliaries, 0.5 to 1 part by weight of dispersant, 0.75 to 1 part by weight of thixotropic agent, and 0.5 to 3 parts by weight of defoaming agent.
  8. 根据权利要求1所述一种单组分高渗透带锈防腐涂料，其特征在于，所述颜填料为云母氧化铁、铝粉、锌粉、氧化铝、氧化锌、石墨烯、铝银浆、滑石粉、碳酸钙和硫酸钡中的至少一种；A one-component high-permeability rust-bearing anti-corrosion coating according to claim 1, characterized in that the pigments and fillers are mica iron oxide, aluminum powder, zinc powder, aluminum oxide, zinc oxide, graphene, aluminum silver paste, At least one of talc, calcium carbonate and barium sulfate;
    所述分散剂为BYK-108、BYK-110、BYK-116、BYK-163、BYK-180、BYK-190和BYK-9076 中的至少一种；The dispersant is at least one of BYK-108, BYK-110, BYK-116, BYK-163, BYK-180, BYK-190 and BYK-9076;
    所述触变剂为聚酰胺腊、有机膨润土、石棉和气相二氧化硅中的至少一种；The thixotropic agent is at least one of polyamide wax, organic bentonite, asbestos and fumed silica;
    所述消泡剂为BYK-088、BYK-141、BYK-057、BYK-065、BYK-A530、BYK-A555和BYK-1790中的至少一种。The defoaming agent is at least one of BYK-088, BYK-141, BYK-057, BYK-065, BYK-A530, BYK-A555 and BYK-1790.
  9. 权利要求1～8任一项所述一种单组分高渗透带锈防腐涂料的制备方法，其特征在于，包括以下步骤：The preparation method of a single-component high-permeability rust-bearing anti-corrosion coating according to any one of claims 1 to 8, characterized in that it includes the following steps:
    (1)在惰性气体保护下，异氰酸酯单体和多元醇于70～80℃下1～2小时，得到聚氨酯预聚物；(1) Under the protection of inert gas, heat isocyanate monomer and polyol at 70-80°C for 1-2 hours to obtain a polyurethane prepolymer;
    (2)将聚氨酯预聚物、润湿溶剂、除水增强剂在常温下混合均匀；(2) Mix the polyurethane prepolymer, wetting solvent, and water removal enhancer evenly at room temperature;
    (3)将颜填料和助剂加入步骤(2)中，混合均匀，得到单组分高渗透带锈防腐涂料。(3) Add pigments, fillers and additives to step (2) and mix evenly to obtain a single-component high-penetration rust-bearing anti-corrosion coating.
  10. 权利要求1～8任一项所述一种单组分高渗透带锈防腐涂料在防腐领域中的应用。The application of the one-component high-penetration rust-bearing anti-corrosion coating according to any one of claims 1 to 8 in the anti-corrosion field.
PCT/CN2022/134177 2022-08-31 2022-11-24 Single-component high-permeability anticorrosive paint for rusty surface, and preparation method therefor and use thereof WO2024045368A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211052082.5A CN115286993A (en) 2022-08-31 2022-08-31 Single-component high-permeability rusty anticorrosive paint and preparation method and application thereof
CN202211052082.5 2022-08-31

Publications (1)

Publication Number Publication Date
WO2024045368A1 true WO2024045368A1 (en) 2024-03-07

Family

ID=83832143

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/134177 WO2024045368A1 (en) 2022-08-31 2022-11-24 Single-component high-permeability anticorrosive paint for rusty surface, and preparation method therefor and use thereof

Country Status (2)

Country Link
CN (2) CN115286993A (en)
WO (1) WO2024045368A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116790180A (en) * 2023-05-05 2023-09-22 中山大学 Anticorrosive paint for rust coating and preparation method and application thereof

Also Published As

Publication number Publication date
CN117165161A (en) 2023-12-05
CN115286993A (en) 2022-11-04

Similar Documents

Publication Publication Date Title
CN112760006B (en) Solvent-free heavy-duty anticorrosive coating composition capable of being coated with water in wet manner and preparation method and application thereof
CN112500767B (en) Solvent-free heavy-duty anticorrosive paint matching system and use method thereof
WO2024045368A1 (en) Single-component high-permeability anticorrosive paint for rusty surface, and preparation method therefor and use thereof
CN112724774B (en) Polysulfide compound modified epoxy resin coating and application thereof
CN112480785A (en) Special epoxy anticorrosive paint for special equipment and preparation method thereof
JP6411121B2 (en) Repair painting method for steel structures
KR102276827B1 (en) Epoxy anti-corrosion composition with multi-corrosion function and multi anti-corrosion method using the same
JP5712056B2 (en) Sealing treatment agent for room temperature sprayed coating and sealing treatment method for room temperature sprayed coating
CN110835490A (en) Environment-friendly high-permeability modified epoxy rusty paint
CN115286970B (en) Solvent-free wet-on-wet construction epoxy anti-corrosion primer and preparation method thereof
CN115466557A (en) Anti-rust and anti-corrosion primer and preparation method thereof
JPH07305026A (en) Polyester polyol two-pack curing type urethane coating composition
CN114989709A (en) Water-based precoated primer, coating and product with coating
KR102298842B1 (en) Coating method using water-based coating material with excellent compatability with solvelt-based coating film and eco-friendly heavy duty coating film manufactured therefrom
JP2001131468A (en) Coating composition for repair and facility-repairing method
JP3556092B2 (en) Primer composition for steel corrosion protection
JP4253790B2 (en) Epoxy resin for one-component paint and the paint
KR102103226B1 (en) Seaside steel structure anticorrosive painting method
RU2802331C1 (en) Epoxy composition for underwater application
JPS63245477A (en) Moisture-curing primer composition for prevention of steel corrosion
JPS592544B2 (en) Heavy corrosion protection coating method
JPH02269169A (en) Metal-coating composition
JPH02263879A (en) Metal-coating composition
JP2008223031A (en) Base metal surface conditioning agent
JP2023178251A (en) Anticorrosive coating method

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22957180

Country of ref document: EP

Kind code of ref document: A1