WO2019233162A1 - 镀锌管专用水性抗氧化液及其制备方法以及镀锌管表面防护的方法和镀锌管 - Google Patents

镀锌管专用水性抗氧化液及其制备方法以及镀锌管表面防护的方法和镀锌管 Download PDF

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WO2019233162A1
WO2019233162A1 PCT/CN2019/079111 CN2019079111W WO2019233162A1 WO 2019233162 A1 WO2019233162 A1 WO 2019233162A1 CN 2019079111 W CN2019079111 W CN 2019079111W WO 2019233162 A1 WO2019233162 A1 WO 2019233162A1
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galvanized
galvanized pipe
acrylic resin
drier
agent
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PCT/CN2019/079111
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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 WO2019233162A1 publication Critical patent/WO2019233162A1/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
    • C09D133/00Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04Homopolymers or copolymers of esters
    • 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08Anti-corrosive paints

Definitions

  • the present application relates to the field of protective coatings, and in particular, to a water-based anti-oxidant solution for galvanized pipes, a preparation method thereof, a method for surface protection of galvanized pipes, and galvanized pipes.
  • Galvanized pipe also known as galvanized steel pipe, is a type of compact and corrosion-resistant zinc-iron alloy layer formed on the surface of the steel pipe by hot plating or electroplating, thereby improving the corrosion resistance of the steel pipe and extending its service life.
  • galvanized pipes can also be used in the petroleum industry, such as oil well pipes, oil pipelines, etc. At the same time, they can also be used as oil heaters and condensation cooling in chemical coking equipment Devices, as well as trestle pipe piles, support pipes for mine tunnels, etc.
  • the corrosion resistance of the pipeline can be improved by galvanizing, it is easy to chemically react with both acidic and alkaline substances due to the high reactivity of zinc. Therefore, it is easy to take anticorrosive measures after galvanizing. Discoloration, damage, and corrosion of the galvanized layer occur.
  • the coating In order to further improve the anti-corrosion performance and decoration of the coating, the coating must be passivated to form a passivation film with high corrosion resistance and good decoration.
  • the passivation after electroplating and surface treatment is mostly performed with reagents such as chromic anhydride.
  • This passivation agent is harmful to humans and the environment because it contains hexavalent chromium, lead, mercury, chromium and other toxic substances.
  • the passivation process using this passivating agent is also relatively complicated.
  • a first object of the present application is to provide an aqueous anti-oxidant solution for galvanized pipes, which has the advantages of excellent environmental protection performance, no toxic and harmful gas volatilization, and the like.
  • a second object of the present application is to provide a method for preparing the aqueous anti-oxidation solution for galvanized pipes.
  • a third object of the present application is to provide a method for protecting the surface of a galvanized pipe by using the water-based anti-oxidation liquid special for the galvanized pipe of the present application.
  • a fourth object of the present application is to provide a galvanized pipe with a surface protection layer prepared by the method of the present application.
  • a water-based antioxidant liquid for galvanized pipes The raw materials of the water-based antioxidant liquid for galvanized pipes mainly include:
  • the amount of each raw material in the aqueous anti-oxidation solution for galvanized pipes described in this application is as follows:
  • the amount of each raw material in the aqueous anti-oxidation solution for galvanized pipes described in this application is as follows:
  • weak alkaline acrylic resin is 35-50%, antifoaming agent is 5-10%, dispersing agent is 3-5%, leveling agent is 3-5%, drier is 5-10%, and deionized water is 20-40%.
  • the amount of each raw material in the aqueous anti-oxidation solution for galvanized pipes described in this application is as follows:
  • the weakly basic acrylic resin is an amino-modified acrylic resin.
  • the defoamer is: polyether, silicone, or polyether-modified silicone-based defoamer;
  • the dispersant is one or more of sodium hexametaphosphate, sodium polyphosphate, and potassium tripolyphosphate;
  • the leveling agent is one or more of dimethylsiloxane, polymethylsiloxane, and organically modified silicone;
  • the drier is: naphthenic acid / isocaprylic acid metal soap.
  • the present application also provides a method for preparing the water-based anti-oxidant solution for galvanized pipes, including:
  • the present application also provides a method for protecting the surface of a galvanized pipe.
  • the method includes: diluting the special aqueous anti-oxidant solution for a galvanized pipe described in the present application, and then coating the surface of the galvanized pipe.
  • the dilution is to dilute the aqueous anti-oxidation solution for the galvanized pipe with 3 to 5 times the mass of water.
  • the present application also provides a galvanized pipe with a surface protection layer obtained by the method for surface protection of a galvanized pipe described in the present application.
  • an aqueous anti-oxidant liquid as a surface protection agent for a galvanized pipe not only has low protection cost and easy protection operation, but also uses no organic solvent and has excellent environmental protection performance;
  • the water-based anti-oxidation solution for galvanized pipes of the present application has good adhesion to the surface of galvanized pipes, and can achieve good adhesion without adding adhesion aids, and can also provide good results without the need of additional preservatives Resistance to salt spray
  • the formed paint film has a thin thickness, good transparency, and strong corrosion resistance.
  • this application provides a new type of galvanized pipe special water-based antioxidant solution, which can not only achieve more convenient protection
  • the technology can also meet the requirements of national environmental protection standards.
  • the raw materials of the aqueous anti-oxidation solution for galvanized pipes are: weakly basic acrylic resin, defoaming agent, dispersant, leveling agent, drier, and deionized water.
  • the main film-forming substance of the anti-oxidation solution is a weakly basic acrylic resin
  • the weakly basic acrylic resin has good water solubility and film-forming properties, and can not only form a corrosion-resistant protective layer on the surface of galvanized pipes;
  • the anti-oxidation liquid of the present application uses water as a solvent, its volatilization will not generate harmful gas, which meets the requirements of environmental protection.
  • the specific raw materials used can be referred to as follows:
  • Amino-modified acrylic resin for example, an amino-modified acrylic resin obtained by amination reaction of an organic amine (triethylamine, tetraethylenepentamine, amino silicone oil) with an acrylic resin.
  • an organic amine triethylamine, tetraethylenepentamine, amino silicone oil
  • Defoamer polyether, silicone, or polyether-modified silicone defoamer
  • Dispersant One or more of sodium hexametaphosphate, sodium polyphosphate, and potassium tripolyphosphate
  • Leveling agent one or more of dimethylsiloxane, polymethylsiloxane, and organically modified silicone;
  • Naphthenic acid / isocaprylic acid metal soaps such as, but not limited to, metal soap liquids such as naphthenic acid / cobalt isooctanoate, manganese, lead, zinc, and calcium.
  • each raw material is formulated in terms of weight percent, and the specific amounts are as follows:
  • drier 3 to 15% for example, may be, but not limited to, 5, 8, 10, or 12%, etc .
  • deionized water 15 to 50% for example, may be, but not Limited to 20, 25, 30, 35, 40, or 45%, etc .;
  • each raw material is formulated in terms of weight percent, and the specific amounts are as follows:
  • each raw material is formulated in terms of weight percent, and the specific amounts are as follows:
  • the method for preparing the water-based antioxidant solution for galvanized pipes with the above formula of the present application is also relatively convenient, and may specifically include the following steps:
  • the stirring speed is 800-1000r / min, and the stirring time is 15-20min;
  • the defoaming agent, dispersant, leveling agent and drier are sequentially added to the obtained mixture after stirring, and the stirring is continued for 30 to 45 minutes, and the rotation speed is controlled at 500 to 800 r / min;
  • the special aqueous anti-oxidation solution for galvanized pipes prepared by the above method can be directly used for the surface anti-corrosion treatment of galvanized pipes after dilution;
  • the anti-oxidant liquid for galvanized pipes can be diluted with 3 to 5 times the mass of water (which can be deionized water or tap water, etc.), and coated on the surface of the galvanized pipes after being stirred evenly. To form a corresponding paint film, thereby protecting the galvanized pipe.
  • water which can be deionized water or tap water, etc.
  • the thickness of the formed paint film is about 5 ⁇ m, and the transparency is good, which is convenient for future inspection of the pipeline.
  • the formed paint film has excellent salt spray resistance and can reach more than 100 hours, which is a high-performance product;
  • reaction device In the reaction device, add a weakly basic acrylic resin, and then, under stirring conditions at a rotation speed of 1000 r / min, add water and stir for 15 min;
  • the defoamer, dispersant, leveling agent, and drier are sequentially added to the obtained mixture after stirring, and the stirring is continued for 45min;
  • Example 2 An aqueous anti-oxidation solution for galvanized pipes of Example 2 was obtained.
  • Example 3 An aqueous anti-oxidation solution for galvanized pipes of Example 3 was obtained.
  • Example 4 An aqueous anti-oxidant solution for galvanized pipes of Example 4 was obtained.
  • Example 5 An aqueous anti-oxidation solution for galvanized pipes of Example 5 was obtained.
  • Example 6 An aqueous anti-oxidation solution for galvanized pipes of Example 6 was obtained.
  • mass percentage 40% of water-based epoxy modified acrylic resin, 10% of defoaming agent, 5% of dispersant, 5% of leveling agent, 10% of drier, and 30% of deionized water. Weigh appropriate amounts of each raw material. .
  • the water-based anti-oxidation solution for galvanized pipes of the present application has good stability and film-forming properties, and can show good adhesion with galvanized pipes, and can also provide surface protection for galvanized pipes. Excellent effect.

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  • 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)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

一种镀锌管专用水性抗氧化液及其制备方法以及镀锌管表面防护的方法和镀锌管。该水性抗氧化液的原料主要包括:弱碱性丙烯酸树脂、消泡剂、分散剂、流平剂、催干剂,以及去离子水。制备方法包括在搅拌条件下,向弱碱性丙烯酸树脂中加入水,然后加入消泡剂、分散剂、流平剂,以及催干剂,继续搅拌,得到镀锌管专用水性抗氧化液。将上述水性抗氧化液稀释后,涂覆于镀锌管表面,得到的带有表面防护层的镀锌管。

Description

镀锌管专用水性抗氧化液及其制备方法以及镀锌管表面防护的方法和镀锌管
相关申请的交叉引用
本申请要求于2018年06月05日提交中国专利局的申请号为CN201810566583.2、名称为“镀锌管专用水性抗氧化液及其制备方法以及镀锌管表面防护的方法和镀锌管”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
本申请涉及防护涂料领域,具体而言,涉及镀锌管专用水性抗氧化液及其制备方法以及镀锌管表面防护的方法和镀锌管。
背景技术
镀锌管,又称镀锌钢管,是一种通过热镀或者电镀从而在钢管表面,以形成结构紧密、具有耐腐蚀性锌-铁合金层,从而提高钢管的耐腐蚀能力,延长其使用寿命。镀锌管的用途胶管,除了作为输水、煤气等一般低压力流体管线外,还可用于石油工业中,例如油井管、输油管等,同时,也可以作为化工焦化设备的油加热器、冷凝冷却器,以及栈桥管桩、矿山坑道的支架用管等。
虽然通过镀锌能够提高管线的抗腐蚀性,然而,由于锌的活泼型较高,其与酸性物质和碱性物质都容易发生化学反应,因而,如果在镀锌后不采取防腐措施,则容易发生变色、破坏,以及镀锌层腐蚀等现象。
为了进一步提高镀层防腐蚀性能和装饰性,镀层必须进行钝化处理,以形成一层耐腐蚀性高、装饰性好的钝化膜。长期以来,电镀以及表面处理后的钝化多采用铬酸酐等试剂进行,这种钝化剂由于含有六价铬、铅、汞、铬等有毒物质,对人体及环境有害。同时,使用这种钝化剂的钝化工艺过程也比较复杂。
随着国家对于环保执法力度和环保生产标准的日趋严格,传统镀锌管钝化的方法实际上已经难以满足环保生产的要求,因而,提供一种更加环保而且施用便捷的镀锌管防护试剂,也是目前急需解决的问题。
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镀锌管专用水性抗氧化液,所述的镀锌管专用水性抗氧化液具有环保性能优异,无有毒有害气体挥发等优点。
本申请的第二目的在于提供一种所述的镀锌管专用水性抗氧化液的制备方法。
本申请的第三目的在于提供一种使用本申请镀锌管专用水性抗氧化液进行镀锌管表面防护的方法。
本申请的第四目的在于提供一种由本申请方法制备的带有表面防护层的镀锌管。
为了实现本申请的上述目的,特采用以下技术方案:
一种镀锌管专用水性抗氧化液,所述镀锌管专用水性抗氧化液的原料主要包括:
弱碱性丙烯酸树脂、消泡剂、分散剂、流平剂、催干剂,以及去离子水。
优选的,按照质量百分数计,本申请所述的镀锌管专用水性抗氧化液中,各原料用量如下:
弱碱性丙烯酸树脂30~60%,消泡剂3~15%,分散剂1~10%,流平剂1~10%,催干剂3~15%,以及去离子水15~50%。
优选的,按照质量百分数计,本申请所述的镀锌管专用水性抗氧化液中,各原料用量如下:
弱碱性丙烯酸树脂35~50%,消泡剂5~10%,分散剂3~5%,流平剂3~5%,催干剂5~10%,以及去离子水20~40%。
优选的,按照质量百分数计,本申请所述的镀锌管专用水性抗氧化液中,各原料用量如下:
弱碱性丙烯酸树脂40~45%,消泡剂5~10%,分散剂3~5%,流平剂3~5%,催干剂5~10%,以及去离子水30~35%。
优选的,本申请所述的镀锌管专用水性抗氧化液中,所述弱碱性丙烯酸树脂为氨基改性丙烯酸树脂。
优选的,本申请所述的镀锌管专用水性抗氧化液中,所述消泡剂为:聚醚、有机硅,或者聚醚改性有机硅类消泡剂;
和/或,所述分散剂为:六偏磷酸钠、多聚磷酸钠以及三聚磷酸钾中的一种或几种;
和/或,所述流平剂为:二甲基硅氧烷、聚甲基硅氧烷,以及有机改性硅氧烷中的一种或几种;
和/或,所述催干剂为:环烷酸/异辛酸金属皂。
同时,本申请还提供了所述的镀锌管专用水性抗氧化液的制备方法,包括:
在搅拌条件下,向弱碱性丙烯酸树脂中加入水,然后加入消泡剂、分散剂、流平剂,以及催干剂,继续搅拌,得到镀锌管专用水性抗氧化液。
进一步的,本申请也提供了一种镀锌管表面防护的方法,所述方法包括:将本申请所述的镀锌管专用水性抗氧化液稀释后,涂覆于镀锌管表面。
优选的,本申请所述的镀锌管表面防护的方法中,所述稀释为以3~5倍质量的水对镀锌管专用水性抗氧化液进行稀释。
同样的,本申请还提供了由本申请所述镀锌管表面防护的方法得到的带有表面防护层 的镀锌管。
与现有技术相比,本申请的有益效果为:
本申请中,采用水性抗氧化液作为镀锌管表面防护剂,不仅防护成本低,防护操作简便,而且所采用水性抗氧化液不使用有机溶剂,环保性能优异;
同时,本申请镀锌管专用水性抗氧化液对于镀锌管表面具有良好的附着力,且无需加入附着力助剂即能够起到良好的附着性,同样也无需额外添加防腐剂就能够提供良好的耐盐雾性能;
进一步的,采用本申请水性抗氧化液对镀锌管进行防护后,所形成的漆膜厚度薄,透明度好,且防腐蚀性强。
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。
有鉴于现有镀锌管钝化的方法在环保以及钝化工艺上所存在的不足之处,本申请特提供了一种新型镀锌管专用水性抗氧化液,不仅能够实现更为便捷的防护工艺,同时也能够满足国家环保的标准要求。
具体的,本申请所提供的镀锌管专用水性抗氧化液的原料为:弱碱性丙烯酸树脂、消泡剂、分散剂、流平剂、催干剂,以及去离子水。
本申请中,抗氧化液的主要成膜物质为弱碱性丙烯酸树脂,而该弱碱性丙烯酸树脂具有良好的水溶性和成膜性能,不仅能够在镀锌管表面形成抗腐蚀性保护层;同时,由于本申请抗氧化液以水为溶剂,因而其挥发不会产生有害气体,符合环保性需求。
具体的,本申请所提供的镀锌管专用水性抗氧化液中,具体所用原料可参考如下:
弱碱性丙烯酸树脂:氨基改性丙烯酸树脂,例如,以有机胺(三乙胺、四乙烯五胺、氨基硅油)与丙烯酸树脂胺化反应后所得氨基改性丙烯酸树脂。
消泡剂:聚醚、有机硅,或者聚醚改性有机硅类消泡剂;
分散剂:六偏磷酸钠、多聚磷酸钠以及三聚磷酸钾中的一种或几种
流平剂:二甲基硅氧烷、聚甲基硅氧烷,以及有机改性硅氧烷中的一种或几种;
催干剂:环烷酸/异辛酸金属皂,例如,但不限于环烷酸/异辛酸钴、锰、铅、锌、钙等金属皂液。
进一步的,在本申请镀锌管专用水性抗氧化液中,各原料按照重量百分比剂,具体用量如下:
弱碱性丙烯酸树脂30~60%,例如可以为,但不限于35、40、45、50,或者55%等;消泡剂3~15%,例如可以为,但不限于5、8、10,或者12%等;分散剂1~10%,例如可以为,但不限于2、3、57,或者9%等;流平剂1~10%,例如可以为,但不限于2、3、5、7,或者9%等;催干剂3~15%,例如可以为,但不限于5、8、10,或者12%等;以及去离子水15~50%,例如可以为,但不限于20、25、30、35、40,或者45%等;
条件是,各组分用量之和为100%。
更进一步的,本申请镀锌管专用水性抗氧化液中,各原料按照重量百分比剂,具体用量如下:
弱碱性丙烯酸树脂35~50%,消泡剂5~10%,分散剂3~5%,流平剂3~5%,催干剂5~10%,以及去离子水20~40%;
条件是,各组分用量之和为100%。
特别的,本申请镀锌管专用水性抗氧化液中,各原料按照重量百分比剂,具体用量如下:
弱碱性丙烯酸树脂40~45%,消泡剂5~10%,分散剂3~5%,流平剂3~5%,催干剂5~10%,以及去离子水30~35%。
同时,本申请上述配方的镀锌管专用水性抗氧化液的制备方法也较为便捷,具体可包括如下步骤:
首先,是在反应装置中,加入弱碱性丙烯酸树脂,然后,在搅拌条件下,加入水,并搅拌均匀;
此过程中,搅拌的转速为800~1000r/min,搅拌时间为15~20min;
然后,在持续搅拌的条件下,将消泡剂、分散剂、流平剂和催干剂依次加入搅拌后所得混合物中,继续搅拌30~45min,转速控制在500~800r/min;
停止搅拌,即得到镀锌管专用水性抗氧化液。
而由如上方法所制备的镀锌管专用水性抗氧化液可以在稀释后,直接用于镀锌管的表面防腐处理;
具体的,可以将镀锌管专用水性抗氧化液以3~5倍质量的水(可以为去离子水,或者是自来水等)进行稀释,并在搅拌均匀后,涂覆于镀锌管的表面,以形成相应的漆膜,从而起到镀锌管保护作用。
所形成的漆膜厚度为5μm左右,而且透明度好,便于日后对于管路的检查;同时,所形成的漆膜耐盐雾性能优异,可以达到100小时以上,属于高性能产品;
同时,由于仅需采用水作为稀释溶剂,因而减少了对于有机溶剂的需求,这对于环保生产而言,也是极为有利的。
实施例1
按照质量百分数:弱碱性丙烯酸树脂35%,消泡剂8%,分散剂5%,流平剂5%,催干剂7%,以及去离子水40%,分别称取适量各原料;
然后,按照如下方法,制备实施例1的镀锌管专用水性抗氧化液:
在反应装置中,加入弱碱性丙烯酸树脂,然后,在转速为1000r/min搅拌条件下,加入水,并搅拌15min;
然后,在转速为800r/min搅拌的条件下,将消泡剂、分散剂、流平剂和催干剂依次加入搅拌后所得混合物中,继续搅拌45min,;
停止搅拌,即得到实施例1的镀锌管专用水性抗氧化液。
实施例2
按照质量百分数:弱碱性丙烯酸树脂50%,消泡剂7%,分散剂5%,流平剂5%,催干剂8%,以及去离子水25%,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的镀锌管专用水性抗氧化液。
实施例3
按照质量百分数:弱碱性丙烯酸树脂30%,消泡剂5%,分散剂5%,流平剂5%,催干剂5%,以及去离子水50%,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的镀锌管专用水性抗氧化液。
实施例4
按照质量百分数:弱碱性丙烯酸树脂60%,消泡剂5%,分散剂8%,流平剂6%,催干剂6%,以及去离子水15%,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的镀锌管专用水性抗氧化液。
实施例5
按照质量百分数:弱碱性丙烯酸树脂40%,消泡剂10%,分散剂5%,流平剂5%,催干剂10%,以及去离子水30%,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的镀锌管专用水性抗氧化液。
实施例6
按照质量百分数:弱碱性丙烯酸树脂45%,消泡剂5%,分散剂5%,流平剂5%,催干剂5%,以及去离子水35%,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的镀锌管专用水性抗氧化液。
对比例1
按照质量百分数:水性环氧改性丙烯酸树脂40%,消泡剂10%,分散剂5%,流平剂5%,催干剂10%,以及去离子水30%,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的涂料。
实验例1
分别对实施例1-6以及对比例1的镀锌管专用水性抗氧化液分别以5倍质量的水进行稀释后,进行性能检测,检测项目及结果如下表所示:
Figure PCTCN2019079111-appb-000001
由此可见,本申请镀锌管专用水性抗氧化液具有良好的稳定性和成膜性,而且能够与镀锌管间表现出良好的附着能力,同时还能够对于镀锌管起到表面防护的优良效果。
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. 一种镀锌管专用水性抗氧化液,其特征在于,所述镀锌管专用水性抗氧化液的原料主要包括:
    弱碱性丙烯酸树脂、消泡剂、分散剂、流平剂、催干剂,以及去离子水。
  2. 根据权利要求1所述的镀锌管专用水性抗氧化液,其特征在于,按照质量百分数计,各原料用量如下:
    弱碱性丙烯酸树脂30~60%,消泡剂3~15%,分散剂1~10%,流平剂1~10%,催干剂3~15%,以及去离子水15~50%。
  3. 根据权利要求2所述的镀锌管专用水性抗氧化液,其特征在于,按照质量百分数计,各原料用量如下:
    弱碱性丙烯酸树脂35~50%,消泡剂5~10%,分散剂3~5%,流平剂3~5%,催干剂5~10%,以及去离子水20~40%。
  4. 根据权利要求3所述的镀锌管专用水性抗氧化液,其特征在于,按照质量百分数计,各原料用量如下:
    弱碱性丙烯酸树脂40~45%,消泡剂5~10%,分散剂3~5%,流平剂3~5%,催干剂5~10%,以及去离子水30~35%。
  5. 根据权利要求1所述的镀锌管专用水性抗氧化液,其特征在于,所述弱碱性丙烯酸树脂为氨基改性丙烯酸树脂。
  6. 根据权利要求1所述的镀锌管专用水性抗氧化液,其特征在于,所述消泡剂为:聚醚、有机硅,或者聚醚改性有机硅类消泡剂;
    和/或,所述分散剂为:六偏磷酸钠、多聚磷酸钠以及三聚磷酸钾中的一种或几种;
    和/或,所述流平剂为:二甲基硅氧烷、聚甲基硅氧烷,以及有机改性硅氧烷中的一种或几种;
    和/或,所述催干剂为:环烷酸/异辛酸金属皂。
  7. 权利要求1-6中任一项所述的镀锌管专用水性抗氧化液的制备方法,其特征在于,包括:
    在搅拌条件下,向弱碱性丙烯酸树脂中加入水,然后加入消泡剂、分散剂、流平剂,以及催干剂,继续搅拌,得到镀锌管专用水性抗氧化液。
  8. 一种镀锌管表面防护的方法,其特征在于,所述方法包括:将权利要求1-6中任一项所述的镀锌管专用水性抗氧化液稀释后,涂覆于镀锌管表面。
  9. 根据权利要求8所述的方法,其特征在于,所述稀释为以3~5倍质量的水对镀锌管专用水性抗氧化液进行稀释。
  10. 由权利要求8或9所述方法得到的带有表面防护层的镀锌管。
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