WO2020007072A1 - 一种水性钢桶套色烤漆及制备方法和喷涂方法 - Google Patents

一种水性钢桶套色烤漆及制备方法和喷涂方法 Download PDF

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WO2020007072A1
WO2020007072A1 PCT/CN2019/079103 CN2019079103W WO2020007072A1 WO 2020007072 A1 WO2020007072 A1 WO 2020007072A1 CN 2019079103 W CN2019079103 W CN 2019079103W WO 2020007072 A1 WO2020007072 A1 WO 2020007072A1
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water
steel barrel
paint
coating
resin
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PCT/CN2019/079103
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English (en)
French (fr)
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袁洪青
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河北比尔尼克新材料科技股份有限公司
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Publication of WO2020007072A1 publication Critical patent/WO2020007072A1/zh

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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D161/00Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
    • C09D161/20Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/20Diluents or solvents
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend

Definitions

  • the present application relates to the field of coatings, and in particular, to a water-based steel barrel coating paint, a preparation method, and a spraying method.
  • Metal baking varnish is a widely used industrial paint. Many metal products are protected and decorated by coating metal baking varnish on the surface.
  • Traditional baking paint is cheap, bright, hard, and strong. It is often used in machinery manufacturing, electromechanical and hardware industries. However, these traditional baking paints not only have the disadvantages of high temperature, long drying time, large energy consumption, poor toughness, etc., but also have short storage periods. At the same time, traditional baking paints mostly use organic solvents as solvents, which is increasingly difficult for increasingly strict In terms of environmental protection requirements, it is obviously disadvantageous.
  • Water-based metal baking paint is a type of water-based paint. Although water-based metal baking paint is more environmentally friendly, the existing water-based metal baking paint has a single functional component, which results in poor water resistance and dispersion. Moreover, the film forming time is longer; at the same time, these water-based metal baking paints have strict requirements on the coating environment, and require higher drying temperature and longer drying time. And these also make the current water-based metal baking paint difficult to meet the actual needs. Especially for steel drums that need to be color-coated, the existing water-based metal baking paint takes a long time to form a film, so it is very easy to mix colors during the coating process. Although the problem of color mixing can be solved by long-drying after single-layer coating, this is obviously disadvantageous for production efficiency and energy-saving production.
  • the first object of the present application is to provide a water-based steel barrel color-coating baking paint.
  • the metal baking paint has not only excellent environmental protection performance, but also good film-forming performance, and no color blending occurs in color-coating coating.
  • a second object of the present application is to provide a method for preparing the water-based steel barrel color-coating baking paint, which is simple in preparation process and suitable for large-scale production.
  • a third object of the present application is to provide a method for spraying using the water-based steel barrel color baking paint of the present application.
  • a water-based steel barrel color-coated paint the raw materials of the water-based steel barrel color-coated paint include the following components:
  • Water-based amino resin water-based acrylic resin, water-based epoxy resin, defoamer, dispersant, leveling agent, and deionized water.
  • the water-based steel barrel coating paint described in the present application includes the following components:
  • the water-based steel barrel coating paint described in the present application includes the following components:
  • the water-based steel barrel coating paint described in the present application includes the following components:
  • the present application also provides a method for preparing the water-based steel barrel coating paint, which includes the following steps:
  • the water-based amino resin, water-based acrylic resin, and water-based epoxy resin are mixed and dispersed, and then an antifoaming agent, a dispersant, a leveling agent, and water are added, and the dispersion is continued to obtain a water-based steel barrel coating paint.
  • the rotation speed of the dispersion after mixing is 400 to 600 rpm, and the dispersion time is 10 to 15 minutes;
  • the continuous rotation speed is 600-900 rpm, and the dispersion time is 10-15 minutes.
  • the present application also provides a spraying method of the water-based steel barrel coating paint according to the present application, including the following steps:
  • the diluting is diluting the water-based steel barrel coating paint with 3 to 5 times the mass of water.
  • the coating is one of air spraying, high pressure airless spraying, or dip coating.
  • the drying temperature is 150-170 ° C, and the drying time is 10-15 minutes.
  • the obtained water-based steel barrel coating paint is not only fast in film formation, but also has good Anti-sagging performance, at the same time, the color coating will not blend;
  • the water-based steel barrel coating baking paint can be directly diluted with tap water, and can be directly diluted to a paintable coating after production, and the steel barrel coating coating construction is performed on the original production line to avoid waste of production line resources and save energy;
  • a paint film with high hardness can be formed on the surface of the steel barrel, and no harmful gas will be volatilized during the baking process, and the environmental protection performance is superior.
  • this application provides a water-based steel barrel color coating baking powder, thereby solving the existing environmental protection, coating Technical problems in the use of packaging, especially the color coating.
  • the water-based steel barrel coating paint provided by the present application is mainly made of the following components: water-based amino resin, water-based acrylic resin, water-based epoxy resin, defoaming agent, dispersant, leveling agent, and deionized water ;
  • the varnish is prepared from the above components;
  • a certain amount of pigment can be added, so as to obtain water-based steel barrel color paint with different colors, and further achieve the color spray coating of steel barrels;
  • this application also provides a water-based steel barrel coloring prepared by using water-based amino resin, water-based acrylic resin, water-based epoxy resin, defoamer, dispersant, leveling agent, and deionized water and pigment as raw materials. Paint.
  • the aqueous amino resin may be an etherified amino resin, such as methanol, methanol, ethanol, isopropanol, n-butanol, isobutanol, octanol, and 2-ethylhexanol.
  • the aqueous amino resins are high-pressure amino type high methylated melamine formaldehyde resin, high imine type melamine formaldehyde resin, butane
  • the aqueous acrylic resin may be a functional acrylic resin such as a hydroxyl group, a carboxyl group, or an epoxy resin;
  • the water-based epoxy resin may be an etherified, esterified, or grafted epoxy resin.
  • the raw materials of the water-based steel barrel coating baking paint of the present application are as follows: 40-70% of water-based amino resin, which can be, but not limited to, 45, 50, 55, 60, or 65%; water-based acrylic resin 10 -30%, for example, can be, but is not limited to, 15, 20, or 25%, etc .; waterborne epoxy resin, for example, 5-20%, for example, can be, but is not limited to, 10, or 15%, etc .; For example, it can be, but not limited to 2, 3, or 4%, etc .; dispersant 2 to 7%, for example, it can be, but not limited to, 3, 4, 5, or 6%; leveling agent 2 to 7%, For example, it can be, but not limited to, 3, 4, 5, or 6%; and 5 to 15% of deionized water, for example, it can be, but is not limited to, 7, 10, or 12%;
  • the raw materials for the water-based steel barrel coating paint of the present application are as follows: water-based amino resin 50 to 60%, water-based acrylic resin 15 to 25%, water-based epoxy resin 8 to 15%, and defoamer 2 to 3%. , 3 to 5% of dispersant, 3 to 5% of leveling agent, and 5 to 10% of deionized water;
  • the raw materials for the water-based steel barrel coating paint of the present application are as follows: water-based amino resin 55 to 58%, water-based acrylic resin 18 to 20%, water-based epoxy resin 10 to 12%, and defoamer 2 to 3 %, Dispersant 3 to 5%, leveling agent 3 to 5%, and deionized water 5 to 10%;
  • the preparation method steps of the water-based steel barrel color paint of the above raw materials can refer to the following:
  • Aqueous amino resin, water-based acrylic resin, and water-based epoxy resin are mixed and dispersed; preferably, the rotation speed of the dispersion is 400 to 600 rpm, and the dispersion time is 10 to 15 minutes;
  • the dispersing speed is 600-900 rpm, and the dispersing time is 10-15 minutes.
  • the water-based steel barrel coating paint is obtained.
  • the percentage of each raw material in the water-based steel barrel color baking paint of the present application added with pigment is as follows:
  • 40 to 70% of water-based amino resin can be, but not limited to, 45, 50, 55, 60, or 65%; 10 to 30% of water-based acrylic resin can be, but not limited to, 15, 20, or 25% 5-20% of water-based epoxy resin, such as, but not limited to, 10 or 15%, etc .; 1 to 5% of defoamer, such as, but not limited to, 2, 3, or 4%, etc .; dispersion Agent 2 to 7%, for example, may be, but not limited to, 3, 4, 5, or 6%; leveling agent 2 to 7%, for example, may be, but not limited to, 3, 4, 5, or 6%; And 5 to 15% of deionized water, for example, it can be, but is not limited to, 7, 10, or 12%, etc .; and the balance of pigments;
  • the preparation method steps of the water-based steel barrel color paint of the above raw materials can refer to the following:
  • Aqueous amino resin, water-based acrylic resin, and water-based epoxy resin are mixed and dispersed; preferably, the rotation speed of the dispersion is 400 to 600 rpm, and the dispersion time is 10 to 15 minutes;
  • the dispersing speed is 600-900 rpm, and the dispersing time is 10-15 minutes.
  • the water-based steel barrel coating paint is obtained.
  • the coating used for coating as described above may be applied to the surface of the steel barrel by any one of air spraying, high-pressure airless spraying, or dip coating;
  • the painted steel barrel is dried at 150 to 170 ° C. for 10 to 15 minutes to complete the coating.
  • the color-coating baking paint provided by the present application has good film-forming properties, the multi-layer paint applied will not have color blending.
  • the formed paint film has a high hardness, which can reach 3H to 4H, and achieves a good surface protection effect on the steel barrel.
  • water-based amino resin water-based acrylic resin
  • water-based epoxy resin brand are all the same.
  • mass percentage 70% of water-based amino resin, 10% of water-based acrylic resin, 5% of water-based epoxy resin, 2% of defoaming agent, 3% of dispersant, 2% of leveling agent, and 8% of deionized water, weighed separately Appropriate amount of each raw material.
  • Example 2 the water-based steel barrel coating paint of Example 2 was obtained.
  • mass percentage 50% of water-based amino resin, 22% of water-based acrylic resin, 15% of water-based epoxy resin, 2% of defoaming agent, 3% of dispersant, 3% of leveling agent, and 10% of deionized water, respectively weighed Proper amount of each raw material;
  • Example 4 the water-based steel barrel coating paint of Example 4 was obtained.
  • mass percentage 55% of amino resin, 20% of acrylic resin, 10% of epoxy resin, 2% of defoaming agent, 3% of dispersant, 3% of leveling agent, and 7% of deionized water. Proper amount of each raw material;
  • Example 5 the water-based steel barrel coating paint of Example 5 is obtained.
  • mass percentage 58% of water-based amino resin, 18% of water-based acrylic resin, 10% of water-based epoxy resin, 2% of defoaming agent, 3% of dispersant, 3% of leveling agent, and 6% of deionized water, weighed separately Proper amount of each raw material;
  • Example 6 the water-based steel barrel coating paint of Example 6 is obtained.
  • mass percentage 55% water-based amino resin, 20% water-based acrylic resin, 10% water-based epoxy resin, 2% defoamer, 3% dispersant, 3% leveling agent, 2% white organic pigment, and deionized water 5%, weigh the appropriate amount of each raw material separately;
  • Example 7 the water-based steel barrel coating paint of Example 7 was obtained.
  • mass percentage 55% water-based amino resin, 20% water-based acrylic resin, 10% water-based epoxy resin, 2% defoamer, 3% dispersant, 3% leveling agent, 2% blue organic pigment, and deionization Water 5%, weigh the appropriate amount of each raw material separately;
  • Example 8 the water-based steel barrel coating paint of Example 8 was obtained.
  • mass percentage 55% of water-based amino resin, 30% of water-based acrylic resin, 2% of defoaming agent, 3% of dispersant, 3% of leveling agent, 2% of blue organic pigment, and 5% of deionized water, weighed separately Proper amount of each raw material;
  • mass percentage 58% water-based amino resin, 27% water-based epoxy resin, 2% defoaming agent, 3% dispersant, 3% leveling agent, 2% white organic pigment, and 5% deionized water, weighed separately Proper amount of each raw material;
  • the test method is to spray the diluted baking paint on different steel plates of the same batch, and to uniformly degrease the steel plates before spraying; the spray pressure is 0.4 MPa, and the dry film thickness is controlled to about 10 ⁇ m, and then the dilution of each group is recorded. After the film formation time of the baking paint, check whether the sagging occurs;

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Wood Science & Technology (AREA)
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Abstract

一种水性钢桶套色烤漆及制备方法和喷涂方法。该水性钢桶套色烤漆,包括如下成分:水性氨基树脂、水性丙烯酸树脂、水性环氧树脂、消泡剂、分散剂、流平剂,以及去离子水。该烤漆可以直接以自来水进行稀释,可以直接在生产后稀释为可涂装涂料,并在原生产线上进行钢桶套色涂装施工。

Description

一种水性钢桶套色烤漆及制备方法和喷涂方法
相关申请的交叉引用
本申请要求于2018年07月05日提交中国专利局的申请号为CN201810731507.2、名称为“一种水性钢桶套色烤漆及制备方法和喷涂方法”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及涂料领域,具体而言,涉及一种水性钢桶套色烤漆及制备方法和喷涂方法。
背景技术
随着人们对于环境问题的日益重视,环保法规也日趋严格,各种环保条例对于挥发性有机物(VOC)的排放量、有机溶剂以及各种重金属的含量都有严格的限制。绿色、环保型涂料已经成为涂料行业发展的趋势。
金属烤漆是一种应用较为广泛的工业漆,很多金属制品都是通过在表面涂装金属烤漆以起到保护和装饰的作用。传统烤漆涂料价格低廉、涂膜光亮、坚硬、附着力强,常用于机械制造、机电以及五金等行业。然而,这些的传统烤漆烘烤不仅存在温度高、干燥时间长、能耗大、韧性较差等缺点,而且储存期较短;同时,传统的烤漆多以有机溶剂为溶剂,这对于日益严格的环保要求而言,明显是不利的。
水性金属烤漆是一类以水为溶剂的涂料,虽然水性金属烤漆在环保性能上更优,但是,由于现有的水性金属烤漆功能组分较为单一,从而导致其耐水性以及分散型较差,而且成膜时间较长;同时,这些水性金属烤漆对涂装环境要求较为严格,并需要较高的干燥温度和较长的干燥时间。而这些也都使得目前的水性金属烤漆难以满足实际使用需求。特别是对于需要进行套色涂装的钢桶而言,由于现有水性金属烤漆成膜时间较长,因而在涂装过程中,极易出现混色。虽然通过单层涂装后长烘干的方式能够解决混色问题,但这对于生产效率和节能生产而言,明显是不利的。
有鉴于此,特提出本申请。
发明内容
本申请的第一目的在于提供一种水性钢桶套色烤漆,所述的金属烤漆不仅具有环保性能优异,同时成膜性能好,套色涂装不会发生颜色交融。
本申请的第二目的在于提供一种所述的水性钢桶套色烤漆的制备方法,该方法制备工艺简便,适于规模化生产。
本申请的第三目的在于提供一种使用本申请水性钢桶套色烤漆进行喷涂的方法。
为了实现本申请的上述目的,特采用以下技术方案:
一种水性钢桶套色烤漆,所述水性钢桶套色烤漆的原料包括如下成分:
水性氨基树脂、水性丙烯酸树脂、水性环氧树脂、消泡剂、分散剂、流平剂,以及去离子水。
优选的,按照重量百分数计,本申请所述的水性钢桶套色烤漆包括如下成分:
水性氨基树脂40~70%,水性丙烯酸树脂10~30%,水性环氧树脂5~20%,消泡剂1~5%,分散剂2~7%,流平剂2~7%,以及去离子水5~15%。
优选的,按照重量百分数计,本申请所述的水性钢桶套色烤漆包括如下成分:
水性氨基树脂50~60%,水性丙烯酸树脂15~25%,水性环氧树脂8~15%,消泡剂2~3%,分散剂3~5%,流平剂3~5%,以及去离子水5~10%。
优选的,按照重量百分数计,本申请所述的水性钢桶套色烤漆包括如下成分:
水性氨基树脂55~58%,水性丙烯酸树脂18~20%,水性环氧树脂10~12%,消泡剂2~3%,分散剂3~5%,流平剂3~5%,以及去离子水5~10%。
同时,本申请还提供了所述的水性钢桶套色烤漆的制备方法,其包括如下步骤:
将水性氨基树脂、水性丙烯酸树脂,以及水性环氧树脂混合后分散,然后加入消泡剂、分散剂、流平剂,以及水,继续分散,得到水性钢桶套色烤漆。
优选的,本申请所述的制备方法中,混合后分散的转速为400~600rpm,分散的时间为10~15min;
继续分散的转速为600~900rpm,分散的时间为10~15min。
进一步的,本申请还提供了本申请所述的水性钢桶套色烤漆的喷涂方法,包括如下步骤:
将所述水性钢桶套色烤漆稀释后,涂装至钢桶表面,然后干燥即可。
优选的,本申请所述的喷涂方法中,所述稀释为将所述水性钢桶套色烤漆以3~5倍质量的水进行稀释。
优选的,本申请所述的喷涂方法中,所述涂装为空气喷涂、高压无气喷涂,或者浸涂中的一种。
优选的,本申请所述的喷涂方法中,所述干燥的温度为150~170℃,干燥的时间为10~15min。
与现有技术相比,本申请的有益效果为:
本申请中,通过以水性氨基树脂、水性丙烯酸树脂、水性环氧树脂等水性树脂复合作为成膜物质,并配合助剂调和所得到的水性钢桶套色烤漆不仅成膜速度快,而且具有良好的抗流挂性能,同时套色涂装不会发生交融;
同时,本申请水性钢桶套色烤漆可以直接以自来水进行稀释,可以直接在生产后稀释为可涂装涂料,并在原生产线上进行钢桶套色涂装施工,避免生产线资源浪费,并节约能 源;
进一步的,涂装后,通过短时间烘烤,即可在钢桶表面形成具有高硬度的漆膜,而且烘烤过程中不会挥发有害气体,环保性能优越。
具体实施方式
下面将结合实施例对本申请的实施方案进行详细描述,但是本领域技术人员将会理解,下列实施例仅用于说明本申请,而不应视为限制本申请的范围。实施例中未注明具体条件者,按照常规条件或制造商建议的条件进行。所用试剂或仪器未注明生产厂商者,均为可以通过市售购买获得的常规产品。
有鉴于现有水性金属烤漆使用性能难以满足实际需求,特别是难以满足钢桶套色涂装需求的实际问题,本申请特提供了一种水性钢桶套色烤漆,从而解决现有烤漆在环保、涂装使用,特别是套色涂装中所存在的技术问题。
具体的,本申请所提供的水性钢桶套色烤漆,主要由以下组分制成:水性氨基树脂、水性丙烯酸树脂、水性环氧树脂、消泡剂、分散剂、流平剂,以及去离子水;
而由如上组分所制备的,是一种清漆;
同时,还可以在如上组分的基础上,添加一定量的颜料,从而得到具有不同颜色的水性钢桶套色烤漆,并进一步实现对于钢桶的套色喷涂;
即,本申请同时也提供了一种以水性氨基树脂、水性丙烯酸树脂、水性环氧树脂、消泡剂、分散剂、流平剂,以及去离子水和颜料为原料所制备的水性钢桶套色烤漆。
其中,如上两类烤漆中,所述水性氨基树脂可以为醚化氨基树脂,例如可以为甲醇、甲醇、乙醇、异丙醇、正丁醇、异丁醇、辛醇、2-乙基己醇、苄醇中的一种或几种醇醚化的氨基树脂;更进一步优选的,所述水性氨基树脂为高压氨基型高甲醚化三聚氰胺甲醛树脂、高亚胺基型三聚氰胺甲醛树脂、甲醇丁醇高醚化三聚氰胺甲醛树脂、六甲氧基甲基三聚氰胺甲醛树脂中的一种或几种;
同时,所述水性丙烯酸树脂可以为羟基、羧基或者环氧等官能化的丙烯酸树脂;
所述水性环氧树脂可以为醚化、酯化,或者接枝化环氧树脂。
同时,本申请中,通过将这三种水性环氧树脂配合作为成膜物质,不仅能够所得本申请所提供的涂料具有良好的成膜性能,而且还具有抗流挂特性,即使套色喷涂,也不会发生颜色交融。
进一步的,按照重量百分数计,本申请水性钢桶套色烤漆原料如下:水性氨基树脂40~70%,例如可以为,但不限于45、50、55、60,或者65%等;水性丙烯酸树脂10~30%,例如可以为,但不限于15、20,或者25%等;水性环氧树脂5~20%,例如可以为,但不限于10,或者15%等;消泡剂1~5%,例如可以为,但不限于2、3,或者4%等;分散剂2~ 7%,例如可以为,但不限于3、4、5,或者6%等;流平剂2~7%,例如可以为,但不限于3、4、5,或者6%等;以及去离子水5~15%,例如可以为,但不限于7、10,或者12%等;
条件是,各原料用量之和为100%。
优选的,按照重量百分数计,本申请水性钢桶套色烤漆原料如下:水性氨基树脂50~60%,水性丙烯酸树脂15~25%,水性环氧树脂8~15%,消泡剂2~3%,分散剂3~5%,流平剂3~5%,以及去离子水5~10%;
条件是,各原料用量之和为100%。
进一步优选的,按照重量百分数计,本申请水性钢桶套色烤漆原料如下:水性氨基树脂55~58%,水性丙烯酸树脂18~20%,水性环氧树脂10~12%,消泡剂2~3%,分散剂3~5%,流平剂3~5%,以及去离子水5~10%;
条件是,各原料用量之和为100%。
如上原料的水性钢桶套色烤漆的制备方法步骤可参考如下:
将水性氨基树脂、水性丙烯酸树脂,以及水性环氧树脂混合后分散;优选的,分散的转速为400~600rpm,分散的时间为10~15min;
然后加入消泡剂、分散剂、流平剂,以及水,继续分散,优选的,分散的转速为600~900rpm,分散的时间为10~15min;得到水性钢桶套色烤漆。
同时,添加有颜料的本申请水性钢桶套色烤漆中,各原料百分比如下:
水性氨基树脂40~70%,例如可以为,但不限于45、50、55、60,或者65%等;水性丙烯酸树脂10~30%,例如可以为,但不限于15、20,或者25%等;水性环氧树脂5~20%,例如可以为,但不限于10,或者15%等;消泡剂1~5%,例如可以为,但不限于2、3,或者4%等;分散剂2~7%,例如可以为,但不限于3、4、5,或者6%等;流平剂2~7%,例如可以为,但不限于3、4、5,或者6%等;以及去离子水5~15%,例如可以为,但不限于7、10,或者12%等;以及余量的颜料;
条件是,各原料用量之和为100%。
如上原料的水性钢桶套色烤漆的制备方法步骤可参考如下:
将水性氨基树脂、水性丙烯酸树脂,以及水性环氧树脂混合后分散;优选的,分散的转速为400~600rpm,分散的时间为10~15min;
然后加入消泡剂、分散剂、流平剂,以及水,继续分散,优选的,分散的转速为600~900rpm,分散的时间为10~15min;得到水性钢桶套色烤漆。
由如上任一种方法所制得的水性钢桶套色烤漆在生产线上混合完成后,可以直接向其中加入3~5质量的自来水稀释,然后继续再次混合,得到可以用于涂装的涂料。
进一步的,如上用于涂装的涂料可以通过空气喷涂、高压无气喷涂,或者浸涂中的一种任一种方式涂装于钢桶的表面;
然后,将涂装后的钢桶在150~170℃条件下干燥10~15min,即完成涂装。
同时,可以以不添加颜料的水性钢桶套色烤漆稀释涂料作为底层涂料,然后在涂装底层涂料25~35s后,再涂装添加颜料的性钢桶套色烤漆稀释涂料作为套色涂料;
同时,也可以以添加有一种颜色颜料的水性钢桶套色烤漆稀释涂料作为底层涂料,然后,然后在涂装底层涂料25~35s后,再涂装添加有其他颜色颜料的水性钢桶套色烤漆稀释涂料作为套色涂料;
由于本申请所提供的套色烤漆具有良好的成膜性能,因而,所涂装的多层涂料不会发生颜色交融。而且,在涂装干燥后,所形成的漆膜硬度较高,可以达到3H~4H,对钢桶实现良好的表面防护效果。
以下实施例和对比例中,所用水性氨基树脂、水性丙烯酸树脂,以及水性环氧树脂牌号均相同。
实施例1
按照质量百分数:水性氨基树脂40%,水性丙烯酸树脂30、水性环氧树脂20%,消泡剂1%,分散剂2%,流平剂2%,以及去离子水5%,分别称取适量各原料;
然后,按照如下方法制得实施例1的水性钢桶套色烤漆稀释涂料:
将水性氨基树脂、水性丙烯酸树脂,以及水性环氧树脂混合后,在转速500rpm条件下分散10min;
然后加入消泡剂、分散剂、流平剂,以及水,继续在转速800rpm条件下分散15min,得到实施例1的水性钢桶套色烤漆。
实施例2
按照质量百分数:水性氨基树脂70%,水性丙烯酸树脂10%,水性环氧树脂5%,消泡剂2%,分散剂3%,流平剂2%,以及去离子水8%,分别称取适量各原料。
然后,参照实施例1的方法,得到实施例2的水性钢桶套色烤漆。
实施例3
按照质量百分数:水性氨基树脂50%,水性丙烯酸树脂22%,水性环氧树脂15%,消泡剂2%,分散剂3%,流平剂3%,以及去离子水10%,分别称取适量各原料;
然后,参照实施例1的方法,得到实施例3的水性钢桶套色烤漆。
实施例4
按照质量百分数:水性氨基树脂60%,水性丙烯酸树脂15%,水性环氧树脂8%,消泡剂2%,分散剂3%,流平剂3%,以及去离子水9%,分别称取适量各原料;
然后,参照实施例1的方法,得到实施例4的水性钢桶套色烤漆。
实施例5
按照质量百分数:水性氨基树脂55%,水性丙烯酸树脂20%,水性环氧树脂10%,消泡剂2%,分散剂3%,流平剂3%,以及去离子水7%,分别称取适量各原料;
然后,参照实施例1的方法,得到实施例5的水性钢桶套色烤漆。
实施例6
按照质量百分数:水性氨基树脂58%,水性丙烯酸树脂18%,水性环氧树脂10%,消泡剂2%,分散剂3%,流平剂3%,以及去离子水6%,分别称取适量各原料;
然后,参照实施例1的方法,得到实施例6的水性钢桶套色烤漆。
实施例7
按照质量百分数:水性氨基树脂55%,水性丙烯酸树脂20%,水性环氧树脂10%,消泡剂2%,分散剂3%,流平剂3%,白色有机颜料2%,以及去离子水5%,分别称取适量各原料;
然后,参照实施例1的方法,得到实施例7的水性钢桶套色烤漆。
实施例8
按照质量百分数:水性氨基树脂55%,水性丙烯酸树脂20%,水性环氧树脂10%,消泡剂2%,分散剂3%,流平剂3%,蓝色有机颜料2%,以及去离子水5%,分别称取适量各原料;
然后,参照实施例1的方法,得到实施例8的水性钢桶套色烤漆。
对比例1
按照质量百分数:水性氨基树脂55%,水性丙烯酸树脂30%,消泡剂2%,分散剂3%,流平剂3%,以及去离子水7%,分别称取适量各原料;
然后,参照实施例1的方法,得到对比例1的水性钢桶套色烤漆。
对比例2
按照质量百分数:水性氨基树脂58%,水性环氧树脂28%,消泡剂2%,分散剂3%,流平剂3%,以及去离子水6%,分别称取适量各原料;
然后,参照实施例1的方法,得到对比例2的水性钢桶套色烤漆。
对比例3
按照质量百分数:水性氨基树脂55%,水性丙烯酸树脂30%,消泡剂2%,分散剂3%,流平剂3%,白色有机颜料2%,以及去离子水5%,分别称取适量各原料;
然后,参照实施例1的方法,得到对比例3的水性钢桶套色烤漆。
对比例4
按照质量百分数:水性氨基树脂55%,水性丙烯酸树脂30%,消泡剂2%,分散剂3%,流平剂3%,蓝色有机颜料2%,以及去离子水5%,分别称取适量各原料;
然后,参照实施例1的方法,得到对比例4的水性钢桶套色烤漆。
对比例5
按照质量百分数:水性氨基树脂58%,水性环氧树脂27%,消泡剂2%,分散剂3%,流平剂3%,白色有机颜料2%,以及去离子水5%,分别称取适量各原料;
然后,参照实施例1的方法,得到对比例5的水性钢桶套色烤漆。
对比例6
按照质量百分数:水性氨基树脂58%,水性环氧树脂27%,消泡剂2%,分散剂3%,流平剂3%,蓝色有机颜料2%,以及去离子水5%,分别称取适量各原料;
然后,参照实施例1的方法,得到对比例6的水性钢桶套色烤漆。
实验例1
将实施例1-6,以及对比例1-2的水性钢桶套色烤漆中,分别加入5倍质量的自来水,然后混合,待测试。
测试方法,将稀释后的各组烤漆喷涂于同批次不同的钢板上,喷涂前对钢板进行统一的除油处理;喷涂压力为0.4MPa,控制干膜厚度为10μm左右,然后记录各组稀释后烤漆的成膜时间,检查是否出现流挂;
然后,进行烘烤,烘干温度为160℃,时间为10min;然后检测成型漆膜硬度,结果如下所示:
实验组 成膜时间(s) 流挂情况 漆膜硬度(H)
实施例1 40 轻微流挂 3
实施例2 35 轻微流挂 3
实施例3 30 基本无流挂 4
实施例4 32 基本无流挂 4
实施例5 25 无流挂 4
实施例6 23 无流挂 4
对比例1 超过1min 明显流挂 3
对比例2 超过1min 明显流挂 3
实验例2
将实施例7-8,以及对比例3-6的水性钢桶套色烤漆中,分别加入5倍质量的自来水,然后混合,待测试。
测试方法将实施例7-8,以及对比例3-6稀释后的各组烤漆喷涂于同批次不同的钢板上,喷涂前对钢板进行统一的除油处理;喷涂压力为0.4MPa,控制干膜厚度为10μm左右;
然后,在喷涂45s后,再在实施例7钢板的表面再次喷涂实施例8的稀释后烤漆;并在实施例8钢板的表面再次喷涂实施例7的稀释后烤漆;
同时,在喷涂45s后,再在对比例3钢板的表面再次喷涂对比例4的稀释后烤漆;并在对比例4钢板的表面再次喷涂对比例3的稀释后烤漆;
在喷涂45s后,再在对比例5钢板的表面再次喷涂对比例6的稀释后烤漆;并在对比例6钢板的表面再次喷涂对比例5的稀释后烤漆。
然后观察是否出现颜色交融,结果如下:
Figure PCTCN2019079103-appb-000001
尽管已用具体实施例来说明和描述了本申请,然而应意识到,在不背离本申请的精神和范围的情况下可以作出许多其它的更改和修改。因此,这意味着在所附权利要求中包括属于本申请范围内的所有这些变化和修改。

Claims (10)

  1. 一种水性钢桶套色烤漆,其特征在于,所述水性钢桶套色烤漆的原料包括如下成分:
    水性氨基树脂、水性丙烯酸树脂、水性环氧树脂、消泡剂、分散剂、流平剂,以及去离子水。
  2. 根据权利要求1所述的水性钢桶套色烤漆,其特征在于,按照重量百分数计,所述水性钢桶套色烤漆的原料包括如下成分:
    水性氨基树脂40~70%,水性丙烯酸树脂10~30%,水性环氧树脂5~20%,消泡剂1~5%,分散剂2~7%,流平剂2~7%,以及去离子水5~15%。
  3. 根据权利要求2所述的水性钢桶套色烤漆,其特征在于,按照重量百分数计,所述水性钢桶套色烤漆的原料包括如下成分:
    水性氨基树脂50~60%,水性丙烯酸树脂15~25%,水性环氧树脂8~15%,消泡剂2~3%,分散剂3~5%,流平剂3~5%,以及去离子水5~10%。
  4. 根据权利要求3所述的水性钢桶套色烤漆,其特征在于,按照重量百分数计,所述水性钢桶套色烤漆的原料包括如下成分:
    水性氨基树脂55~58%,水性丙烯酸树脂18~20%,水性环氧树脂10~12%,消泡剂2~3%,分散剂3~5%,流平剂3~5%,以及去离子水5~10%。
  5. 权利要求1-4中任一项所述的水性钢桶套色烤漆的制备方法,其特征在于,包括如下步骤:
    将水性氨基树脂、水性丙烯酸树脂,以及水性环氧树脂混合后分散,然后加入消泡剂、分散剂、流平剂,以及水,继续分散,得到水性钢桶套色烤漆。
  6. 根据权利要求5所述的制备方法,其特征在于,混合后分散的转速为400~600rpm,分散的时间为10~15min;
    继续分散的转速为600~900rpm,分散的时间为10~15min。
  7. 权利要求1-4中任一项所述的水性钢桶套色烤漆的喷涂方法,其特征在于,包括如下步骤:
    将所述水性钢桶套色烤漆稀释后,涂装至钢桶表面,然后干燥即可。
  8. 根据权利要求7所述的喷涂方法,其特征在于,所述稀释为将所述水性钢桶套色烤漆以3~5倍质量的水进行稀释。
  9. 根据权利要求7所述的喷涂方法,其特征在于,所述涂装为空气喷涂、高压无气喷涂,或者浸涂中的一种。
  10. 根据权利要求7所述的喷涂方法,其特征在于,所述干燥的温度为150~170℃,干燥的时间为10~15min。
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