WO2018218821A1 - 一种水性无机富锌底漆及其制备方法 - Google Patents

一种水性无机富锌底漆及其制备方法 Download PDF

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WO2018218821A1
WO2018218821A1 PCT/CN2017/102677 CN2017102677W WO2018218821A1 WO 2018218821 A1 WO2018218821 A1 WO 2018218821A1 CN 2017102677 W CN2017102677 W CN 2017102677W WO 2018218821 A1 WO2018218821 A1 WO 2018218821A1
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parts
component
aqueous
agent
zinc
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French (fr)
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李瑞清
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太仓卡斯特姆新材料有限公司
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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
    • C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
    • C09D161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • 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
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
    • C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
    • 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
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0893—Zinc
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2231—Oxides; Hydroxides of metals of tin
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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
    • C08K2201/011—Nanostructured additives

Definitions

  • the invention relates to an aqueous inorganic zinc-rich primer and a preparation method thereof.
  • Zinc-rich coatings are generally classified into two types: organic zinc-rich coatings and inorganic zinc-rich coatings, depending on the film-forming materials.
  • the inorganic zinc-rich coating is an inorganic polymer as a film-forming base liquid, and the zinc powder reacts with it to form a zinc-iron complex on the metal surface, thereby forming a solid protective coating film.
  • This year with the increasing awareness of environmental protection, the restrictions on volatile organic solvents have become more and more strict.
  • Water-based coatings and solvent-free coatings which are called the mainstream of the development of the coatings industry, have received attention.
  • the content of zinc powder in the water-based inorganic zinc-rich coating is high, far exceeds that of CPVC, and the coating film is porous, resulting in poor weather resistance of the coating and poor impact resistance.
  • an object of the present invention is to provide an aqueous inorganic zinc-rich primer and a preparation method thereof.
  • the primer is composed of two components, and the water-based amino resin, the silicon-acrylic emulsion, the alkali metal silicate is the main component of the component A, and the zinc component and the nano-TiO 2 -SnO 2 are used as the main raw material component B.
  • Deionized water is used as solvent, and the adhesion ability is strong, and the production environment is effectively improved.
  • the use process is environmentally friendly and low-toxic; the nano TiO 2 -SnO 2 ultrafine particles are added to the primer to accelerate the curing rate of the primer and dry quickly.
  • the construction efficiency is high, and the density of the primer film formation and the weather resistance of the coating are improved, and the impact resistance and corrosion resistance of the coating are enhanced.
  • An aqueous inorganic zinc-rich primer comprising the following parts by weight:
  • Component A aqueous amino resin: 40-60 parts; silicone-acrylic emulsion: 8-15 parts; alkali metal silicate: 30-45 parts; silicone coupling agent: 3-8 parts; aqueous adhesion promoter : 3-8 parts; anti-sink Agent: 1-3 parts; dispersing agent: 0.5-1.5 parts; defoaming agent: 0.5-1.5 parts; deionized water: 45-65 parts;
  • Component B zinc powder: 30-40 parts; nano TiO 2 -SnO 2 : 1-2 parts; inorganic pigment: 10-20 parts; modified polyamine curing agent: 2.5-5 parts.
  • the primer comprises the following parts by weight:
  • Component A aqueous amino resin: 42-55 parts; silicone-acrylic emulsion: 10-12 parts; alkali metal silicate: 33-40 parts; silicone coupling agent: 5-8 parts; aqueous adhesion promoter : 3-5 parts; anti-settling agent: 1-1.5 parts; dispersing agent: 0.7-1.2 parts; defoaming agent: 0.8-1.2 parts; deionized water: 45-58 parts;
  • Component B zinc powder: 30-36 parts; nano-TiO 2 -SnO 2 : 1.1-1.3 parts; inorganic pigment: 10-15 parts; modified polyamine curing agent: 3.5-5 parts.
  • the primer comprises the following parts by weight:
  • Component A Aqueous amino resin: 47 parts; Silicone-acrylic emulsion: 11 parts; Alkali metal silicate: 36 parts; Silicone coupling agent: 7.5 parts; Aqueous adhesion promoter: 3.5 parts; Anti-settling agent: 1.2 parts; dispersing agent: 0.9 parts; defoaming agent: 1 part; deionized water: 51 parts;
  • Component B zinc powder: 34 parts; nano TiO 2 -SnO 2 : 1.2 parts; inorganic pigment: 13 parts; modified polyamine curing agent: 4 parts.
  • the mass ratio of the A component to the B component is 3-8:1.
  • the zinc powder is scaly zinc powder.
  • alkali metal silicate is one or more selected from the group consisting of potassium silicate, sodium silicate or lithium silicate.
  • the inorganic pigment is one or more of titanium white powder, iron oxide red, mica powder, carbon black or phthalocyanine blue.
  • the primer has a pH of 7.2-8.0 and a particle size of 65-85 ⁇ m.
  • a method for preparing an aqueous inorganic zinc-rich primer comprises the following steps:
  • component B (2) adding zinc powder, nano TiO 2 -SnO 2 , inorganic pigment and modified polyamine curing agent to another mixer, stirring at 200-400r / min for 10-15min, to obtain component B;
  • a component A and a component B are obtained at 1000-1200 r/min to obtain an aqueous inorganic zinc-rich primer.
  • the primer is composed of two components, and the water-based amino resin, the silicon-acrylic emulsion, the alkali metal silicate is the main component of the component A, and the zinc component and the nano-TiO 2 -SnO 2 are used as the main raw material component B.
  • Deionized water is used as solvent, and the adhesion ability is strong, and the production environment is effectively improved.
  • the use process is environmentally friendly and low-toxic; the nano TiO 2 -SnO 2 ultrafine particles are added to the primer to accelerate the curing rate of the primer and dry quickly.
  • the construction efficiency is high, and the density of the primer film formation and the weather resistance of the coating are improved, and the impact resistance and corrosion resistance of the coating are enhanced.
  • the present invention provides an aqueous inorganic zinc-rich primer comprising the following parts by weight:
  • Component A aqueous amino resin: 40-60 parts; silicone-acrylic emulsion: 8-15 parts; alkali metal silicate: 30-45 parts; silicone coupling agent: 3-8 parts; aqueous adhesion promoter : 3-8 parts; anti-settling agent: 1-3 parts; dispersing agent: 0.5-1.5 parts; defoaming agent: 0.5-1.5 parts; deionized water: 45-65 parts;
  • Component B zinc powder: 30-40 parts; nano TiO 2 -SnO 2 : 1-2 parts; inorganic pigment: 10-20 parts; modified polyamine curing agent: 2.5-5 parts.
  • the primer comprises the following parts by weight:
  • Component A aqueous amino resin: 42-55 parts; silicone-acrylic emulsion: 10-12 parts; alkali metal silicate: 33-40 parts; silicone coupling agent: 5-8 parts; aqueous adhesion promoter : 3-5 parts; anti-settling agent: 1-1.5 parts; dispersing agent: 0.7-1.2 parts; defoaming agent: 0.8-1.2 parts; deionized water: 45-58 parts;
  • Component B zinc powder: 30-36 parts; nano-TiO 2 -SnO 2 : 1.1-1.3 parts; inorganic pigment: 10-15 parts; modified polyamine curing agent: 3.5-5 parts.
  • the primer comprises the following parts by weight:
  • Component A Aqueous amino resin: 47 parts; Silicone-acrylic emulsion: 11 parts; Alkali metal silicate: 36 parts; siloxane coupling agent: 7.5 parts; aqueous adhesion promoter: 3.5 parts; anti-settling agent: 1.2 parts; dispersing agent: 0.9 parts; defoaming agent: 1 part; deionized water: 51 parts;
  • Component B zinc powder: 34 parts; nano TiO 2 -SnO 2 : 1.2 parts; inorganic pigment: 13 parts; modified polyamine curing agent: 4 parts.
  • the mass ratio of the A component to the B component is 3-8:1.
  • the zinc powder is scaly zinc powder.
  • alkali metal silicate is one or more selected from the group consisting of potassium silicate, sodium silicate or lithium silicate.
  • the inorganic pigment is one or more of titanium white powder, iron oxide red, mica powder, carbon black or phthalocyanine blue.
  • the primer has a pH of 7.2-8.0 and a particle size of 65-85 ⁇ m.
  • the invention also provides a preparation method of an aqueous inorganic zinc-rich primer, comprising the following steps:
  • component B (2) adding zinc powder, nano TiO 2 -SnO 2 , inorganic pigment and modified polyamine curing agent to another mixer, stirring at 200-400r / min for 10-15min, to obtain component B;
  • a component A and a component B are obtained at 1000-1200 r/min to obtain an aqueous inorganic zinc-rich primer.
  • 1 is a list of ingredients of an aqueous inorganic zinc-rich primer according to various embodiments of the present invention.
  • the invention provides an aqueous inorganic zinc-rich primer provided by the invention, wherein the aqueous amino resin, the silicon-acrylic emulsion and the alkali metal silicate are the main components of the component A, and the zinc powder and the nano TiO 2 -SnO 2 are used as the main raw materials.
  • nano TiO 2 -SnO 2 ultrafine particles are added to the primer to accelerate the primer as a nanocatalyst Curing rate, fast drying, high construction efficiency, improve the density of primer film formation and weather resistance of coating, strong impact strength, adhesion grade 1 grade, 3% NaOH solution, no blistering for 10 days, Rust point phenomenon, seawater resistance, no blistering, rust phenomenon for 30 days, and high temperature resistance. No cracking or discoloration during 500h at 500°C.

Abstract

一种水性无机富锌底漆，包括如下重量份数的组分：A组分：水性氨基树脂：40-60份；硅丙乳液：8-15份；碱金属硅酸盐：30-45份；硅氧烷偶联剂：3-8份；水性附着力促进剂：3-8份；抗沉剂：1-3份；分散剂：0.5-1.5份；消泡剂：0.5-1.5份；去离子水：45-65份；B组分：锌粉：30-40份；纳米TiO 2-SnO 2：1-2份；无机颜料：10-20份；改性多元胺固化剂：2.5-5份。该底漆的制备方法包括：(1)按比例将水性氨基树脂、硅丙乳液、碱金属硅酸盐及15-22份的去离子水加入搅拌机中，恒温50℃，以600-800r/min的转速搅拌20-30min，保持搅拌，继续加入硅氧烷偶联剂、水性附着力促进剂、抗沉剂、分散剂、消泡剂及余量的去离子水，将转速调节至1200-1500r/min，搅拌10-20min，得到组分A；(2)将锌粉、纳米TiO 2-SnO 2、无机颜料及改性多元胺固化剂加入另一搅拌机中，以200-400r/min的转速搅拌10-15min，得到组分B；(3)将组分A与组分B以1000-1200r/min，得到水性无机富锌底漆。

Description

一种水性无机富锌底漆及其制备方法 技术领域
本发明涉及一种水性无机富锌底漆及其制备方法。
背景技术
随着现代工业的快速发展，人们对材料的需求越来越迫切，然而，金属的腐蚀对人们带来了巨大的经济损失。因此金属防腐成为各专家学者面临的重大课题。在所有的防腐技术和方法中，涂装防腐蚀涂料是最有效、最经济、最常用的方法。其中，富锌涂料由于其所具有的优异的防锈性与耐久性，长久以来被广泛应用于石油化工设备、桥梁、船舶、输油管道等行业。
富锌涂料根据成膜物质的不同，一般分为有机富锌涂料及无机富锌涂料两大类。其中，无机富锌涂料是以无机聚合物为成膜基液，锌粉与之反应，在金属表面形成锌铁络合物，从而形成坚实的防护涂膜。今年来，随着人们环保意识的增强，对含挥发性有机溶剂的限制越来越严格，水性涂料、无溶剂涂料等称为涂料行业发展的主流，得到了人们的重视。但是，水性无机富锌涂料中锌粉含量高，远超过CPVC，涂膜多孔，导致涂层耐候性较差，抗冲击性差。
发明内容
为解决上述存在的问题，本发明的目的在于提供一种水性无机富锌底漆及其制备方法。所述底漆采用双组份组成，以水性氨基树脂、硅丙乳液、碱金属硅酸盐为A组分的主要成分，配合锌粉、纳米TiO2-SnO2为主要原料的B组分，并以去离子水为溶剂，附着能力强，有效改善生产环境，使用过程环保低毒；底漆中添加有纳米TiO2-SnO2超微颗粒，作为纳米催化剂，加快底漆固化速率，干燥快，施工效率高，同时提高底漆成膜的致密度及涂层耐候性，增强涂层抗冲击性及耐腐蚀作用。
为达到上述目的，本发明的技术方案是：
一种水性无机富锌底漆，所述底漆包括如下重量份数的组分：
A组分：水性氨基树脂：40-60份；硅丙乳液：8-15份；碱金属硅酸盐：30-45份；硅氧烷偶联剂：3-8份；水性附着力促进剂：3-8份；抗沉 剂：1-3份；分散剂：0.5-1.5份；消泡剂：0.5-1.5份；去离子水：45-65份；
B组分：锌粉：30-40份；纳米TiO2-SnO2：1-2份；无机颜料：10-20份；改性多元胺固化剂：2.5-5份。
进一步地，所述底漆包括如下重量份数的组分：
A组分：水性氨基树脂：42-55份；硅丙乳液：10-12份；碱金属硅酸盐：33-40份；硅氧烷偶联剂：5-8份；水性附着力促进剂：3-5份；抗沉剂：1-1.5份；分散剂：0.7-1.2份；消泡剂：0.8-1.2份；去离子水：45-58份；
B组分：锌粉：30-36份；纳米TiO2-SnO2：1.1-1.3份；无机颜料：10-15份；改性多元胺固化剂：3.5-5份。
进一步地，所述底漆包括如下重量份数的组分：
A组分：水性氨基树脂：47份；硅丙乳液：11份；碱金属硅酸盐：36份；硅氧烷偶联剂：7.5份；水性附着力促进剂：3.5份；抗沉剂：1.2份；分散剂：0.9份；消泡剂：1份；去离子水：51份；
B组分：锌粉：34份；纳米TiO2-SnO2：1.2份；无机颜料：13份；改性多元胺固化剂：4份。
另有，所述A组分与B组分的质量比为3-8:1。
再，所述锌粉为鳞片状锌粉。
再有，所述碱金属硅酸盐为硅酸钾、硅酸钠或硅酸锂中的一种或多种。
且，所述无机颜料为钛白粉、氧化铁红、云母粉、碳黑或酞菁蓝中的一种或多种。
同时，所述底漆的pH值在7.2-8.0，颗粒度为65-85μm。
一种水性无机富锌底漆的制备方法，包括如下步骤：
(1)按比例将水性氨基树脂、硅丙乳液、碱金属硅酸盐及15-22份的去离子水加入搅拌机中，恒温50℃，以600-800r/min的转速搅拌20-30min，保持搅拌，继续加入硅氧烷偶联剂、水性附着力促进剂、抗沉剂、分散剂、消泡剂及余量的去离子水，将转速调节至1200-1500r/min，搅拌10-20min，得到组分A；
(2)将锌粉、纳米TiO2-SnO2、无机颜料及改性多元胺固化剂加入另一搅拌机中，以200-400r/min的转速搅拌10-15min，得到组分B；
(3)将组分A与组分B以1000-1200r/min，得到水性无机富锌底漆。
本发明的有益效果在于：
所述底漆采用双组份组成，以水性氨基树脂、硅丙乳液、碱金属硅酸盐为A组分的主要成分，配合锌粉、纳米TiO2-SnO2为主要原料的B组分，并以去离子水为溶剂，附着能力强，有效改善生产环境，使用过程环保低毒；底漆中添加有纳米TiO2-SnO2超微颗粒，作为纳米催化剂，加快底漆固化速率，干燥快，施工效率高，同时提高底漆成膜的致密度及涂层耐候性，增强涂层抗冲击性及耐腐蚀作用。
具体实施方式
下面通过具体实施例对本发明做进一步的说明，但实施例并不限制本发明的保护范围。
本发明提供一种水性无机富锌底漆，所述底漆包括如下重量份数的组分：
A组分：水性氨基树脂：40-60份；硅丙乳液：8-15份；碱金属硅酸盐：30-45份；硅氧烷偶联剂：3-8份；水性附着力促进剂：3-8份；抗沉剂：1-3份；分散剂：0.5-1.5份；消泡剂：0.5-1.5份；去离子水：45-65份；
B组分：锌粉：30-40份；纳米TiO2-SnO2：1-2份；无机颜料：10-20份；改性多元胺固化剂：2.5-5份。
进一步地，所述底漆包括如下重量份数的组分：
A组分：水性氨基树脂：42-55份；硅丙乳液：10-12份；碱金属硅酸盐：33-40份；硅氧烷偶联剂：5-8份；水性附着力促进剂：3-5份；抗沉剂：1-1.5份；分散剂：0.7-1.2份；消泡剂：0.8-1.2份；去离子水：45-58份；
B组分：锌粉：30-36份；纳米TiO2-SnO2：1.1-1.3份；无机颜料：10-15份；改性多元胺固化剂：3.5-5份。
进一步地，所述底漆包括如下重量份数的组分：
A组分：水性氨基树脂：47份；硅丙乳液：11份；碱金属硅酸盐： 36份；硅氧烷偶联剂：7.5份；水性附着力促进剂：3.5份；抗沉剂：1.2份；分散剂：0.9份；消泡剂：1份；去离子水：51份；
B组分：锌粉：34份；纳米TiO2-SnO2：1.2份；无机颜料：13份；改性多元胺固化剂：4份。
另有，所述A组分与B组分的质量比为3-8:1。
再，所述锌粉为鳞片状锌粉。
再有，所述碱金属硅酸盐为硅酸钾、硅酸钠或硅酸锂中的一种或多种。
且，所述无机颜料为钛白粉、氧化铁红、云母粉、碳黑或酞菁蓝中的一种或多种。
同时，所述底漆的pH值在7.2-8.0，颗粒度为65-85μm。
同时，本发明还提供一种水性无机富锌底漆的制备方法，包括如下步骤：
(1)按比例将水性氨基树脂、硅丙乳液、碱金属硅酸盐及15-22份的去离子水加入搅拌机中，恒温50℃，以600-800r/min的转速搅拌20-30min，保持搅拌，继续加入硅氧烷偶联剂、水性附着力促进剂、抗沉剂、分散剂、消泡剂及余量的去离子水，将转速调节至1200-1500r/min，搅拌10-20min，得到组分A；
(2)将锌粉、纳米TiO2-SnO2、无机颜料及改性多元胺固化剂加入另一搅拌机中，以200-400r/min的转速搅拌10-15min，得到组分B；
(3)将组分A与组分B以1000-1200r/min，得到水性无机富锌底漆。
其中，表1为本发明各实施例所述的一种水性无机富锌底漆的成分列表。
表1：(单位：重量份数)
Figure PCTCN2017102677-appb-000001
Figure PCTCN2017102677-appb-000002
采用本发明所提供的一种水性无机富锌底漆，以水性氨基树脂、硅丙乳液、碱金属硅酸盐为A组分的主要成分，配合锌粉、纳米TiO2-SnO2为主要原料的B组分，并以去离子水为溶剂，附着能力强，有效改善生产环境，使用过程环保低毒；底漆中添加有纳米TiO2-SnO2超微颗粒，作为纳米催化剂，加快底漆固化速率，干燥快，施工效率高，同时提高底漆成膜的致密度及涂层耐候性，抗冲击强度强，附着力等级为1级，耐3％NaOH溶液，浸泡10天无起泡、锈点现象，耐海水，浸泡30天无起泡、锈点现象，同时耐高温，500℃下保持4h无开裂、变色起皮现象。
需要说明的是，以上实施例仅用以说明本发明的技术方案而非限制。尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的范围，其均应涵盖在本发明的权利要求范围中。

Claims (9)

  1. 一种水性无机富锌底漆，其特征在于，所述底漆包括如下重量份数的组分：
    A组分：水性氨基树脂：40-60份；硅丙乳液：8-15份；碱金属硅酸盐：30-45份；硅氧烷偶联剂：3-8份；水性附着力促进剂：3-8份；抗沉剂：1-3份；分散剂：0.5-1.5份；消泡剂：0.5-1.5份；去离子水：45-65份；
    B组分：锌粉：30-40份；纳米TiO2-SnO2：1-2份；无机颜料：10-20份；改性多元胺固化剂：2.5-5份。
  2. 根据权利要求1所述的一种水性无机富锌底漆，其特征在于，所述底漆包括如下重量份数的组分：
    A组分：水性氨基树脂：42-55份；硅丙乳液：10-12份；碱金属硅酸盐：33-40份；硅氧烷偶联剂：5-8份；水性附着力促进剂：3-5份；抗沉剂：1-1.5份；分散剂：0.7-1.2份；消泡剂：0.8-1.2份；去离子水：45-58份；
    B组分：锌粉：30-36份；纳米TiO2-SnO2：1.1-1.3份；无机颜料：10-15份；改性多元胺固化剂：3.5-5份。
  3. 根据权利要求1所述的一种水性无机富锌底漆，其特征在于，所述底漆包括如下重量份数的组分：
    A组分：水性氨基树脂：47份；硅丙乳液：11份；碱金属硅酸盐：36份；硅氧烷偶联剂：7.5份；水性附着力促进剂：3.5份；抗沉剂：1.2份；分散剂：0.9份；消泡剂：1份；去离子水：51份；
    B组分：锌粉：34份；纳米TiO2-SnO2：1.2份；无机颜料：13份；改性多元胺固化剂：4份。
  4. 根据权利要求1所述的一种水性无机富锌底漆，其特征在于，所述A组分与B组分的质量比为3-8:1。
  5. 根据权利要求1所述的一种水性无机富锌底漆，其特征在于，所述锌粉为鳞片状锌粉。
  6. 根据权利要求1所述的一种水性无机富锌底漆，其特征在于，所述碱金属硅酸盐为硅酸钾、硅酸钠或硅酸锂中的一种或多种。
  7. 根据权利要求1所述的一种水性无机富锌底漆，其特征在于，所述无机颜料为钛白粉、氧化铁红、云母粉、碳黑或酞菁蓝中的一种或多种。
  8. 根据权利要求1所述的一种水性无机富锌底漆，其特征在于，所述底漆的pH值在7.2-8.0，颗粒度为65-85μm。
  9. 如权利要求1所述的一种水性无机富锌底漆的制备方法，其特征在于，包括如下步骤：
    (1)按比例将水性氨基树脂、硅丙乳液、碱金属硅酸盐及15-22份的去离子水加入搅拌机中，恒温50℃，以600-800r/min的转速搅拌20-30min，保持搅拌，继续加入硅氧烷偶联剂、水性附着力促进剂、抗沉剂、分散剂、消泡剂及余量的去离子水，将转速调节至1200-1500r/min，搅拌10-20min，得到组分A；
    (2)将锌粉、纳米TiO2-SnO2、无机颜料及改性多元胺固化剂加入另一搅拌机中，以200-400r/min的转速搅拌10-15min，得到组分B；
    (3)将组分A与组分B以1000-1200r/min，得到水性无机富锌底漆。
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