CN104789083A - Quick-drying zinc phosphate anti-corrosion primer based on epoxy resin and preparation method thereof - Google Patents
Quick-drying zinc phosphate anti-corrosion primer based on epoxy resin and preparation method thereof Download PDFInfo
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Abstract
本发明涉及一种基于环氧树脂的快干磷酸锌防腐蚀底漆及其制备方法，包括甲组分和乙组分，两组份按质量比5:1~10:1混合，甲组分中按重量份数计包括：环氧树脂25~28份，玻璃化温度为125℃的丙烯酸树脂5~8份，脲醛树脂1~3份，磷酸锌10~13份，滑石粉18~23份，沉淀硫酸钡20~25份，防沉剂1~2份，消泡剂0.5~1份，润湿分散剂0.3~1份，第一有机溶剂18~25份；乙组分中的按重量份数计包括：胺值为400~500的聚酰胺10~15份，胺值为250~290的腰果壳油改性胺45~50份，环氧树脂5~9份，消泡剂0.5~1份，润湿分散剂0.3~1份，第二有机溶剂25~30份。本发明制备方法简单，制备出的快干磷酸锌防腐蚀底漆具有较好的柔韧性、附着力，耐盐雾性能和耐候性。The invention relates to a quick-drying zinc phosphate anti-corrosion primer based on epoxy resin and a preparation method thereof, comprising component A and component B, the two components are mixed at a mass ratio of 5:1 to 10:1, and component A In parts by weight, it includes: 25-28 parts of epoxy resin, 5-8 parts of acrylic resin with a glass transition temperature of 125°C, 1-3 parts of urea-formaldehyde resin, 10-13 parts of zinc phosphate, and 18-23 parts of talcum powder , 20~25 parts of precipitated barium sulfate, 1~2 parts of anti-sedimentation agent, 0.5~1 part of defoamer, 0.3~1 part of wetting and dispersing agent, 18~25 parts of the first organic solvent; The number of parts includes: 10~15 parts of polyamide with amine value of 400~500, 45~50 parts of cashew nut shell oil modified amine with amine value of 250~290, 5~9 parts of epoxy resin, 0.5~ 1 part, 0.3~1 part of wetting and dispersing agent, 25~30 parts of the second organic solvent. The preparation method of the invention is simple, and the prepared quick-drying zinc phosphate anti-corrosion primer has good flexibility, adhesion, salt spray resistance and weather resistance.
Description
技术领域technical field
本发明涉及一种基于环氧树脂的快干磷酸锌防腐蚀底漆及其制备方法，属于涂料制备技术领域。The invention relates to a fast-drying zinc phosphate anti-corrosion primer based on epoxy resin and a preparation method thereof, belonging to the technical field of paint preparation.
背景技术Background technique
目前，环氧树脂等溶剂型防腐涂料因其具有良好的附着力、耐化学品性、耐水性以及物理机械性能而广泛应用于港湾、船舶修造、海洋开发工程、电站、桥梁工程、石油化工等行业金属构件的防腐。常用的普通环氧防腐蚀底漆，常温固化需要5～7天，冬天固化速度慢，影响施工，本发明的快干磷酸锌防腐蚀底漆，相对传统的富锌底漆，干燥速度极快，漆膜坚硬，可低温固化，同时基材处理要求低，既能用于单一涂层防腐蚀，又能与其他面漆如氯化橡胶，丙烯酸聚氨酯配套使用，具有易施工，防腐蚀性佳，适用范围广等优点。At present, solvent-based anti-corrosion coatings such as epoxy resin are widely used in harbors, shipbuilding, marine development projects, power stations, bridge projects, petrochemical industries, etc. because of their good adhesion, chemical resistance, water resistance, and physical and mechanical properties. Anticorrosion of industrial metal components. Commonly used ordinary epoxy anti-corrosion primers need 5-7 days to cure at room temperature, and the curing speed is slow in winter, which affects construction. Compared with traditional zinc-rich primers, the quick-drying zinc phosphate anti-corrosion primer of the present invention has a very fast drying speed , the paint film is hard and can be cured at low temperature. At the same time, the substrate treatment requirements are low. It can not only be used for single-coat anti-corrosion, but also can be used in conjunction with other topcoats such as chlorinated rubber and acrylic polyurethane. It has easy construction and good corrosion resistance. , a wide range of applications and other advantages.
发明内容Contents of the invention
本发明的目的是为了解决现有环氧树脂防腐涂料固化速度较慢且耐候性较差,使用范围较小的缺点，提供了一种漆膜强度高，防腐蚀性能好且具有较好的低温固化性能的基于环氧树脂的快干磷酸锌防腐蚀底漆及其制备方法。The purpose of the present invention is to solve the shortcomings of the existing epoxy resin anti-corrosion coatings such as slow curing speed, poor weather resistance and small application range, and provide a paint film with high strength, good anti-corrosion performance and good low temperature Epoxy resin-based fast-drying zinc phosphate anticorrosion primer with curing properties and preparation method thereof.
本发明采用如下技术方案：一种基于环氧树脂的快干磷酸锌防腐蚀底漆，包括甲组分和乙组分两种组分，使用时，按将两组份按质量比5:1～10:1混合搅拌均匀；The present invention adopts the following technical scheme: a quick-drying zinc phosphate anti-corrosion primer based on epoxy resin, including two components of component A and component B. ~10:1 mixing and stirring evenly;
所述甲组分中的组成成分按重量份数计为：环氧当量为875～1950的环氧树脂25～28份，玻璃化温度为125℃的丙烯酸树脂5～8份，脲醛树脂1～3份，磷酸锌10～13份，滑石粉18～23份，沉淀硫酸钡20～25份，防沉剂1～2份，消泡剂0.5～1份，润湿分散剂0.3～1份，第一有机溶剂18～25份；The components in the said component A are calculated in parts by weight: 25 to 28 parts of epoxy resin with an epoxy equivalent of 875 to 1950, 5 to 8 parts of acrylic resin with a glass transition temperature of 125°C, 1 to 8 parts of urea-formaldehyde resin 3 parts, 10-13 parts of zinc phosphate, 18-23 parts of talcum powder, 20-25 parts of precipitated barium sulfate, 1-2 parts of anti-settling agent, 0.5-1 part of defoamer, 0.3-1 part of wetting and dispersing agent, 18-25 parts of the first organic solvent;
所述乙组分中的组成成分中按重量份数计为：胺值为400～500的聚酰胺10～15份，胺值为250～290的腰果壳油改性胺45～50份，环氧当量为190的环氧树脂5～9份，消泡剂0.5～1份，润湿分散剂0.3～1份，第二有机溶剂25～30份。The components in the B component are calculated in parts by weight: 10 to 15 parts of polyamide with an amine value of 400 to 500, 45 to 50 parts of cashew nut shell oil modified amine with an amine value of 250 to 290, and cyclic 5-9 parts of epoxy resin with an oxygen equivalent of 190, 0.5-1 part of defoamer, 0.3-1 part of wetting and dispersing agent, and 25-30 parts of the second organic solvent.
进一步的，所述防沉剂为膨润土、聚乙烯蜡或聚酰胺蜡。Further, the anti-settling agent is bentonite, polyethylene wax or polyamide wax.
进一步的，所述消泡剂为有机硅消泡剂或聚合物型消泡剂。Further, the defoamer is a silicone defoamer or a polymer defoamer.
进一步的，所述润湿分散剂为相对分子量大小为600～1000的脂肪胺。Further, the wetting and dispersing agent is an aliphatic amine with a relative molecular weight of 600-1000.
进一步的，所述第一有机溶剂为甲苯、二甲苯、丙酮、异丙醇或丁醇中的一种或几种；Further, the first organic solvent is one or more of toluene, xylene, acetone, isopropanol or butanol;
进一步的，所述的第二有机溶剂为甲苯、异丙醇或丙二醇甲醚中的一种或几种。Further, the second organic solvent is one or more of toluene, isopropanol or propylene glycol methyl ether.
进一步的，所述环氧树脂交联架桥剂为聚酰胺和腰果壳油改性胺的加成物。Further, the epoxy resin crosslinking bridging agent is an adduct of polyamide and cashew nut shell oil modified amine.
基于环氧树脂的快干磷酸锌防腐蚀底漆的制备方法，包括如下步骤：The preparation method of the fast-drying zinc phosphate anticorrosion primer based on epoxy resin comprises the steps:
a、按重量份依次称取甲组分中的各个成分：环氧当量为875～1950的环氧树脂25～28份，玻璃化温度125℃的丙烯酸树脂5～8份，脲醛树脂1～3份，磷酸锌10～13份，滑石粉18～23份，沉淀硫酸钡20～25份，防沉剂1～2份，消泡剂0.5～1份，润湿分散剂0.3～1份，第一有机溶剂18～25份；a. Weigh each component in Part A in order by weight: 25-28 parts of epoxy resin with epoxy equivalent of 875-1950, 5-8 parts of acrylic resin with glass transition temperature of 125°C, 1-3 parts of urea-formaldehyde resin 10-13 parts of zinc phosphate, 18-23 parts of talcum powder, 20-25 parts of precipitated barium sulfate, 1-2 parts of anti-settling agent, 0.5-1 part of defoamer, 0.3-1 part of wetting and dispersing agent, 18-25 parts of organic solvent;
b、将环氧树脂和丙烯酸树脂加入到第一有机溶剂中溶解搅匀，再在第一有机溶剂内加入脲醛树脂混合搅匀，然后加入润湿分散剂，防沉剂，消泡剂搅拌均匀；边搅拌边加磷酸锌滑石粉和沉淀硫酸钡，搅拌均匀后进砂磨机研磨至细度10～40微米，得到快干磷酸锌防腐蚀底漆甲组分，备用；b. Add epoxy resin and acrylic resin to the first organic solvent to dissolve and stir well, then add urea-formaldehyde resin to the first organic solvent and mix well, then add wetting and dispersing agent, anti-sedimentation agent, defoamer and stir well Add zinc phosphate talcum powder and precipitated barium sulfate while stirring, and then enter the sand mill to grind to a fineness of 10 to 40 microns after stirring to obtain the quick-drying zinc phosphate anti-corrosion primer A component, which is set aside;
c、按重量份数依次称取乙组分中的各个成分：10～15份400～500的聚酰胺，45～50份胺值为250～290的腰果壳油改性胺，5～9份环氧当量为190的环氧树脂，0.5～1份消泡剂，0.3～1份润湿分散剂，25～30份第二有机溶剂；c. Weigh each component in component B in order by parts by weight: 10-15 parts of polyamide of 400-500, 45-50 parts of cashew nut shell oil modified amine with amine value of 250-290, 5-9 parts Epoxy resin with epoxy equivalent of 190, 0.5-1 part of defoamer, 0.3-1 part of wetting and dispersing agent, 25-30 parts of second organic solvent;
d、将聚酰胺和腰果壳油改性胺分别溶解于第二有机溶剂中，搅拌均匀，边搅拌边加入环氧树脂，消泡剂和润湿分散剂，后置入离心机中高速分散25～30min，离心机转速设置为600-800转/分，静置20～24h，得到快干磷酸锌防腐蚀底漆乙组分，备用；d. Dissolve polyamide and cashew nut shell oil-modified amine in the second organic solvent respectively, stir evenly, add epoxy resin, defoamer and wetting and dispersing agent while stirring, and then place them in a centrifuge for high-speed dispersion for 25 ~30min, set the speed of the centrifuge at 600-800 rpm, let it stand for 20-24h, and obtain the second component of the quick-drying zinc phosphate anti-corrosion primer, and set it aside;
e、将步骤b得到的甲组分与步骤d得到的乙组分按质量比5:1混合搅拌均匀，熟化10～15min，得到基于环氧树脂的快干磷酸锌防腐蚀底漆。e. Mix and stir the component A obtained in step b and the component B obtained in step d at a mass ratio of 5:1, and ripen for 10-15 minutes to obtain a quick-drying zinc phosphate anti-corrosion primer based on epoxy resin.
本发明制备方法简单，乙组分中选用聚酰胺和腰果壳油改性胺的加成物作为环氧树脂交联架桥剂，提高了底漆固化的速度和物理机械性能，同时提升了于钢铁基材的附着力，甲组份中的环氧树脂和丙烯酸树脂以及脲醛树脂的组合，不仅能够能提高涂层的柔韧性、附着力，还能提高耐盐雾性能和耐候性，有效的延长了钢铁的使用寿命，本发明制备的快干磷酸锌防腐蚀底漆对基材处理要求低，既能用于单一涂层防腐蚀，又能与其他面漆如氯化橡胶，丙烯酸聚氨酯配套使用，具有易施工，防腐蚀性佳，适用范围广。The preparation method of the present invention is simple, and the adduct of polyamide and cashew nut shell oil modified amine is selected as the epoxy resin crosslinking bridging agent in the second component, which improves the curing speed and physical and mechanical properties of the primer, and at the same time improves the Adhesion to steel substrates, the combination of epoxy resin, acrylic resin and urea-formaldehyde resin in component A can not only improve the flexibility and adhesion of the coating, but also improve the salt spray resistance and weather resistance, effectively The service life of steel is prolonged, and the quick-drying zinc phosphate anti-corrosion primer prepared by the invention has low requirements on substrate treatment, and can be used for single-coat anti-corrosion, and can be matched with other top coats such as chlorinated rubber and acrylic polyurethane It has the advantages of easy construction, good corrosion resistance and wide application range.
具体实施方式Detailed ways
下面将结合具体实施例对本发明作进一步的说明。The present invention will be further described below in conjunction with specific embodiments.
实施例1：Example 1:
一种基于环氧树脂的快干磷酸锌防腐蚀底漆，包括甲组分和乙组分两种，甲组分中的组成成分按重量份数计为：环氧当量为875～1950的环氧树脂25份，玻璃化温度为125℃的丙烯酸树脂5份，脲醛树脂1份，磷酸锌10份，滑石粉18份，沉淀硫酸钡20份，防沉剂1份，消泡剂0.5份，润湿分散剂0.3份，第一有机溶剂异丙醇18份；A quick-drying zinc phosphate anti-corrosion primer based on epoxy resin, including two components, A component and B component. 25 parts of oxygen resin, 5 parts of acrylic resin with a glass transition temperature of 125°C, 1 part of urea-formaldehyde resin, 10 parts of zinc phosphate, 18 parts of talcum powder, 20 parts of precipitated barium sulfate, 1 part of anti-settling agent, 0.5 part of defoamer, 0.3 parts of wetting and dispersing agent, 18 parts of the first organic solvent isopropanol;
乙组分中的组成成分中按重量份数计为：胺值为400～500的聚酰胺10份，胺值为250的腰果壳油改性胺45份，环氧当量为190的环氧树脂5份，消泡剂0.5份，润湿分散剂0.3份，第二有机溶剂丙二醇甲醚25份。The components in component B are calculated in parts by weight: 10 parts of polyamide with an amine value of 400-500, 45 parts of cashew nut shell oil modified amine with an amine value of 250, and epoxy resin with an epoxy equivalent of 190 5 parts, 0.5 parts of defoamer, 0.3 parts of wetting and dispersing agent, 25 parts of the second organic solvent propylene glycol methyl ether.
基于环氧树脂的快干磷酸锌防腐蚀底漆的制备方法包括如下步骤：The preparation method of the quick-drying zinc phosphate anticorrosion primer based on epoxy resin comprises the steps:
a、称取环氧当量为875～1950的环氧树脂25kg，玻璃化温度125℃的丙烯酸树脂5kg，脲醛树脂1kg，磷酸锌10kg，滑石粉18kg，沉淀硫酸钡20kg，防沉剂1kg，消泡剂0.5kg，润湿分散剂0.3kg，第一有机溶剂18kg。a. Weigh 25kg of epoxy resin with an epoxy equivalent of 875-1950, 5kg of acrylic resin with a glass transition temperature of 125°C, 1kg of urea-formaldehyde resin, 10kg of zinc phosphate, 18kg of talcum powder, 20kg of precipitated barium sulfate, 1kg of anti-sedimentation agent, Foaming agent 0.5kg, wetting and dispersing agent 0.3kg, first organic solvent 18kg.
b、将环氧当量为875～1950的环氧树脂和玻璃化温度125℃的丙烯酸树脂加入到第一有机溶剂中溶解搅匀，再在第一有机溶剂内加入脲醛树脂混合搅匀，然后加入润湿分散剂、防沉剂、消泡剂搅拌均匀；边搅拌边加入磷酸锌、滑石粉、沉淀硫酸钡，以1000转/分的速度搅拌均匀后进砂磨机研磨至细度10～40微米，得到快干磷酸锌防腐蚀底漆甲组份，备用。b. Add epoxy resin with an epoxy equivalent of 875 to 1950 and acrylic resin with a glass transition temperature of 125°C into the first organic solvent to dissolve and stir well, then add urea-formaldehyde resin to the first organic solvent and mix well, then add Stir the wetting and dispersing agent, anti-sedimentation agent, and defoamer evenly; while stirring, add zinc phosphate, talcum powder, and precipitated barium sulfate, stir evenly at a speed of 1000 rpm, and then grind in a sand mill to a fineness of 10-40 microns , to obtain component A of the quick-drying zinc phosphate anti-corrosion primer, for subsequent use.
c、称取10kg胺值400～500的聚酰胺，45kg胺值为250-290的腰果壳油改性胺，5kg环氧当量为190的环氧树脂，0.5kg消泡剂，0.3kg润湿分散剂，25kg第二有机溶剂。c. Weigh 10kg of polyamide with an amine value of 400-500, 45kg of cashew nut shell oil modified amine with an amine value of 250-290, 5kg of epoxy resin with an epoxy equivalent of 190, 0.5kg of defoamer, and 0.3kg of wetting Dispersant, 25kg second organic solvent.
d、将胺值400～500的聚酰胺和胺值为250～290的腰果壳油改性胺，溶解于第二有机溶剂，搅拌均匀，边搅拌边加入环氧当量为190的环氧树脂、消泡剂、润湿分散剂，以1000转/分的速度高速分散半小时，静置24小时，得到快干磷酸锌防腐蚀底漆乙组份，备用。d. Dissolve the polyamide with an amine value of 400-500 and the cashew nut shell oil-modified amine with an amine value of 250-290 in the second organic solvent, stir evenly, and add epoxy resin with an epoxy equivalent of 190 while stirring, Defoamer, wetting and dispersing agent, disperse at a high speed of 1000 rpm for half an hour, and let it stand for 24 hours to obtain component B of the quick-drying zinc phosphate anti-corrosion primer, which is ready for use.
e、将步骤b得到的甲组分与步骤d得到的乙组分混合搅拌均匀，熟化10分钟，得到基于环氧树脂的快干磷酸锌防腐蚀底漆。e. Mix and stir the component A obtained in step b and the component B obtained in step d, and ripen for 10 minutes to obtain a quick-drying zinc phosphate anti-corrosion primer based on epoxy resin.
实施例2：Example 2:
一种基于环氧树脂的快干磷酸锌防腐蚀底漆，包括甲组分和乙组分两种，A fast-drying zinc phosphate anti-corrosion primer based on epoxy resin, including two components, A component and B component,
甲组分中的组成成分按重量份数计为：环氧当量为875～1950的环氧树脂25份，玻璃化温度为125℃的丙烯酸树脂8份，脲醛树脂1份，磷酸锌10份，滑石粉18份，沉淀硫酸钡20份，防沉剂1份，消泡剂0.5份，润湿分散剂0.3份，第一有机溶剂甲苯18份；The components in Part A are calculated in parts by weight: 25 parts of epoxy resin with an epoxy equivalent of 875-1950, 8 parts of acrylic resin with a glass transition temperature of 125°C, 1 part of urea-formaldehyde resin, 10 parts of zinc phosphate, 18 parts of talcum powder, 20 parts of precipitated barium sulfate, 1 part of anti-settling agent, 0.5 part of defoamer, 0.3 part of wetting and dispersing agent, 18 parts of the first organic solvent toluene;
乙组分中的组成成分中按重量份数计为：胺值为400～500的聚酰胺10份，胺值为250～290的腰果壳油改性胺45份，环氧当量为190的环氧树脂5份，消泡剂0.5份，润湿分散剂0.3份，第二有机溶剂异丙醇25份。The components in the B component are calculated in parts by weight: 10 parts of polyamides with an amine value of 400-500, 45 parts of cashew nut shell oil modified amines with an amine value of 250-290, and epoxy equivalents of 190. 5 parts of oxygen resin, 0.5 parts of defoamer, 0.3 parts of wetting and dispersing agent, 25 parts of second organic solvent isopropanol.
基于环氧树脂的快干磷酸锌防腐蚀底漆的制备方法包括如下步骤：The preparation method of the quick-drying zinc phosphate anticorrosion primer based on epoxy resin comprises the steps:
a、称取环氧当量为875～1950的环氧树脂25kg，玻璃化温度125℃的丙烯酸树脂8kg，脲醛树脂1kg，磷酸锌10kg，滑石粉18kg，沉淀硫酸钡20kg，防沉剂1kg，消泡剂0.5kg，润湿分散剂0.3kg，第一有机溶剂18kg。a. Weigh 25kg of epoxy resin with an epoxy equivalent of 875-1950, 8kg of acrylic resin with a glass transition temperature of 125°C, 1kg of urea-formaldehyde resin, 10kg of zinc phosphate, 18kg of talcum powder, 20kg of precipitated barium sulfate, 1kg of anti-sedimentation agent, Foaming agent 0.5kg, wetting and dispersing agent 0.3kg, first organic solvent 18kg.
b、将环氧当量为875～1950的环氧树脂和玻璃化温度125℃的丙烯酸树脂加入到第一有机溶剂甲苯中溶解搅匀，再在第一有机溶剂甲苯内加入脲醛树脂混合搅匀，然后加入润湿分散剂、防沉剂、消泡剂搅拌均匀；边搅拌边加入磷酸锌、滑石粉、沉淀硫酸钡，以1000转/分的速度搅拌均匀后进砂磨机研磨至细度10～40微米，得到快干磷酸锌防腐蚀底漆甲组份，备用。b. Add epoxy resin with an epoxy equivalent of 875 to 1950 and acrylic resin with a glass transition temperature of 125° C. into the first organic solvent toluene to dissolve and stir evenly, then add urea-formaldehyde resin to the first organic solvent toluene and mix well. Then add wetting and dispersing agent, anti-sedimentation agent, anti-foaming agent and stir evenly; while stirring, add zinc phosphate, talcum powder, precipitated barium sulfate, stir evenly at a speed of 1000 rpm, and then grind it into a sand mill to a fineness of 10~ 40 microns, obtain quick-drying zinc phosphate anticorrosion primer component A, for subsequent use.
c、称取10kg胺值400～500的聚酰胺，45kg胺值为250-290的腰果壳油改性胺，5kg环氧当量为190的环氧树脂，0.5kg消泡剂，0.3kg润湿分散剂，25kg第二有机溶剂异丙醇。c. Weigh 10kg of polyamide with an amine value of 400-500, 45kg of cashew nut shell oil modified amine with an amine value of 250-290, 5kg of epoxy resin with an epoxy equivalent of 190, 0.5kg of defoamer, and 0.3kg of wetting Dispersant, 25kg second organic solvent isopropanol.
d、将胺值400～500的聚酰胺和胺值为250-290的腰果壳油改性胺，溶解于第二有机溶剂，搅拌均匀，边搅拌边加入环氧当量为190的环氧树脂、消泡剂、润湿分散剂，以1000转/分的速度高速分散半小时，静置24小时，得到快干磷酸锌防腐蚀底漆乙组份，备用。d. Dissolve the polyamide with an amine value of 400-500 and the cashew nut shell oil-modified amine with an amine value of 250-290 in the second organic solvent, stir evenly, and add epoxy resin with an epoxy equivalent of 190 while stirring, Defoamer, wetting and dispersing agent, disperse at a high speed of 1000 rpm for half an hour, and let it stand for 24 hours to obtain component B of the quick-drying zinc phosphate anti-corrosion primer, which is ready for use.
e、将步骤b得到的甲组分与步骤d得到的乙组分混合搅拌均匀，熟化15分钟，得到基于环氧树脂的快干磷酸锌防腐蚀底漆。e. Mix and stir the component A obtained in step b and the component B obtained in step d, and ripen for 15 minutes to obtain a quick-drying zinc phosphate anti-corrosion primer based on epoxy resin.
实施例3：Example 3:
一种基于环氧树脂的快干磷酸锌防腐蚀底漆，包括甲组分和乙组分两种组分，使用时，将两组份混合搅拌均匀；A quick-drying zinc phosphate anti-corrosion primer based on epoxy resin, including two components, A component and B component. When using, mix and stir the two components evenly;
甲组分中的组成成分按重量份数计为：环氧当量为875～1950的环氧树脂28份，玻璃化温度为125℃的丙烯酸树脂8份，脲醛树脂3份，磷酸锌13份，滑石粉23份，沉淀硫酸钡25份，防沉剂2份，消泡剂1份，润湿分散剂0.3份，第一有机溶剂丙酮25份；The components in Part A are calculated in parts by weight: 28 parts of epoxy resin with an epoxy equivalent of 875-1950, 8 parts of acrylic resin with a glass transition temperature of 125°C, 3 parts of urea-formaldehyde resin, 13 parts of zinc phosphate, 23 parts of talcum powder, 25 parts of precipitated barium sulfate, 2 parts of anti-settling agent, 1 part of defoamer, 0.3 part of wetting and dispersing agent, 25 parts of first organic solvent acetone;
乙组分中的组成成分中按重量份数计为：胺值为400～500的聚酰胺15份，胺值为250～290的腰果壳油改性胺50份，环氧当量为190的环氧树脂9份，消泡剂1份，润湿分散剂1份，第二有机溶剂丙二醇甲醚30份。The components in component B are calculated in parts by weight: 15 parts of polyamides with an amine value of 400 to 500, 50 parts of cashew nut shell oil modified amines with an amine value of 250 to 290, and epoxy equivalents of 190. 9 parts of epoxy resin, 1 part of defoamer, 1 part of wetting and dispersing agent, 30 parts of second organic solvent propylene glycol methyl ether.
基于环氧树脂的快干磷酸锌防腐蚀底漆的制备方法包括如下步骤：The preparation method of the quick-drying zinc phosphate anticorrosion primer based on epoxy resin comprises the steps:
a、称取环氧当量为875～1950的环氧树脂28kg，玻璃化温度125℃的丙烯酸树脂8kg，脲醛树脂3kg，磷酸锌13kg，滑石粉23kg，沉淀硫酸钡25kg，防沉剂2kg，消泡剂1kg，润湿分散剂0.3kg，第一有机溶剂15kg。a. Weigh 28kg of epoxy resin with an epoxy equivalent of 875-1950, 8kg of acrylic resin with a glass transition temperature of 125°C, 3kg of urea-formaldehyde resin, 13kg of zinc phosphate, 23kg of talcum powder, 25kg of precipitated barium sulfate, 2kg of anti-sedimentation agent, Foaming agent 1kg, wetting and dispersing agent 0.3kg, first organic solvent 15kg.
b、将环氧当量为875～1950的环氧树脂和玻璃化温度125℃的丙烯酸树脂加入到第一有机溶剂中溶解搅匀，再在第一有机溶剂丙酮内加入脲醛树脂混合搅匀，然后加入润湿分散剂、防沉剂、消泡剂搅拌均匀；边搅拌边加入磷酸锌、滑石粉、沉淀硫酸钡，以1000转/分的速度搅拌均匀后进砂磨机研磨至细度10～40微米，得到快干磷酸锌防腐蚀底漆甲组份，备用。b. Add epoxy resin with an epoxy equivalent of 875 to 1950 and acrylic resin with a glass transition temperature of 125°C into the first organic solvent to dissolve and stir evenly, then add urea-formaldehyde resin to the first organic solvent acetone and mix well, then Add wetting and dispersing agent, anti-sedimentation agent, anti-foaming agent and stir evenly; while stirring, add zinc phosphate, talcum powder, precipitated barium sulfate, stir evenly at 1000 rpm, then grind in a sand mill to a fineness of 10-40 Micron, get component A of the quick-drying zinc phosphate anti-corrosion primer, and set aside.
c、称取15kg胺值400～500的聚酰胺，50kg胺值为250-290的腰果壳油改性胺，9kg环氧当量为190的环氧树脂，1kg消泡剂，1kg润湿分散剂，30kg第二有机溶剂。c. Weigh 15kg of polyamide with an amine value of 400-500, 50kg of cashew nut shell oil modified amine with an amine value of 250-290, 9kg of epoxy resin with an epoxy equivalent of 190, 1kg of defoamer, and 1kg of wetting and dispersing agent , 30kg of the second organic solvent.
d、将胺值400～500的聚酰胺和胺值为250-290的腰果壳油改性胺，溶解于第二有机溶剂，搅拌均匀，边搅拌边加入环氧当量为190的环氧树脂、消泡剂、润湿分散剂，以1000转/分的速度高速分散半小时，静置24小时，得到快干磷酸锌防腐蚀底漆乙组份，备用。d. Dissolve the polyamide with an amine value of 400-500 and the cashew nut shell oil-modified amine with an amine value of 250-290 in the second organic solvent, stir evenly, and add epoxy resin with an epoxy equivalent of 190 while stirring, Defoamer, wetting and dispersing agent, disperse at a high speed of 1000 rpm for half an hour, and let it stand for 24 hours to obtain component B of the quick-drying zinc phosphate anti-corrosion primer, which is ready for use.
e、将步骤b得到的甲组份与步骤d得到的乙组份混合搅拌均匀，熟化15分钟，得到基于环氧树脂的快干磷酸锌防腐蚀底漆。e. Mix and stir the component A obtained in step b and the component B obtained in step d, and ripen for 15 minutes to obtain a quick-drying zinc phosphate anti-corrosion primer based on epoxy resin.
实施例4：Example 4:
一种基于环氧树脂的普通富锌防腐蚀底漆，包括甲组分和乙组分两种，An ordinary zinc-rich anti-corrosion primer based on epoxy resin, including two components, A component and B component,
甲组分中的组成成分按重量份数计为：环氧当量为500～900的环氧树脂15份，锌粉40份，滑石粉14.份，沉淀硫酸钡100份，防沉剂2份，消泡剂0.5份，润湿分散剂0.3份，第一有机溶剂丁醇18份；The components in Part A are calculated in parts by weight: 15 parts of epoxy resin with an epoxy equivalent of 500-900, 40 parts of zinc powder, 14 parts of talcum powder, 100 parts of precipitated barium sulfate, and 2 parts of anti-sedimentation agent , 0.5 parts of defoamer, 0.3 parts of wetting and dispersing agent, 18 parts of first organic solvent butanol;
乙组分中的组成成分中按重量份数计为：胺值为400～500的聚酰胺50份，，第二有机溶剂甲苯50份。The components in component B are calculated in parts by weight: 50 parts of polyamide with an amine value of 400-500, and 50 parts of the second organic solvent toluene.
基于环氧树脂的快干磷酸锌防腐蚀底漆的制备方法包括如下步骤：The preparation method of the quick-drying zinc phosphate anticorrosion primer based on epoxy resin comprises the steps:
a、：称取环氧当量为500～900的环氧树脂15kg，锌粉40kg，滑石粉14.kg，沉淀硫酸钡100kg，防沉剂2kg，消泡剂0.5kg，润湿分散剂0.3kg，第一有机溶剂丁醇18kg；a.: Weigh 15kg of epoxy resin with an epoxy equivalent of 500-900, 40kg of zinc powder, 14.kg of talc powder, 100kg of precipitated barium sulfate, 2kg of anti-sedimentation agent, 0.5kg of defoamer, and 0.3kg of wetting and dispersing agent , the first organic solvent butanol 18kg;
b、将环氧当量为500-900的环氧树脂加入到第一有机溶剂甲苯中溶解搅匀，然后加入润湿分散剂、防沉剂、消泡剂搅拌均匀；边搅拌边加入锌粉、沉淀硫酸钡，以1000转/分的速度搅拌均匀后高速分散至细度10～40微米，得到环氧富锌防腐蚀底漆甲组份，备用。b. Add epoxy resin with an epoxy equivalent of 500-900 into the first organic solvent toluene to dissolve and stir evenly, then add wetting and dispersing agent, anti-sedimentation agent, and defoamer and stir evenly; while stirring, add zinc powder, Precipitate barium sulfate, stir evenly at a speed of 1000 rpm, and then disperse at a high speed to a fineness of 10-40 microns to obtain component A of epoxy zinc-rich anti-corrosion primer, which is ready for use.
c、称取50kg胺值400～500的聚酰胺，50kg第二有机溶剂甲苯。c. Weigh 50 kg of polyamide with an amine value of 400-500, and 50 kg of toluene as the second organic solvent.
d、将胺值400～500的聚酰胺溶解于第二有机溶剂甲苯，搅拌均匀,得到环氧富锌防腐蚀底漆乙组份，备用。d. Dissolve polyamide with an amine value of 400-500 in toluene, the second organic solvent, and stir evenly to obtain component B of epoxy zinc-rich anti-corrosion primer, which is set aside.
e、将步骤b得到的甲组分与步骤d得到的乙组分混合搅拌均匀质量比10:1，熟化15分钟，得到环氧富锌防腐蚀底漆。e. Mix and stir the component A obtained in step b and the component B obtained in step d to a uniform mass ratio of 10:1, and age for 15 minutes to obtain an epoxy zinc-rich anti-corrosion primer.
对实施例1、实施例2、实施例3和实施例4制备出的基于环氧树脂的快干磷酸锌防腐蚀底漆分别依据GB/T1728、GB/T5210、GB/T1732、GB/T1771、GB/T1865进行表干、实干、附着力、耐冲击、柔韧性、耐盐雾性和人工加速老化性的实验。According to GB/T1728, GB/T5210, GB/T1732, GB/T1771, GB/T1728, GB/T5210, GB/T1732, GB/T1771 and GB/T1865 conducts experiments on surface dryness, hard drying, adhesion, impact resistance, flexibility, salt spray resistance and artificial accelerated aging.
实验结果见表1。The experimental results are shown in Table 1.
表1Table 1
由表1可知，实施例4中制备的基于环氧树脂的普通富锌防腐蚀底漆的表干为1h，实干为120h，人工加速老化性为200h，实施例1、实施例2和实施例3中中的表干、实干时间远远低于实施例4，且耐盐雾性和人工加速老化性优于实施例4，本发明的实施例1、实施例2和实施例3通过添加玻璃化温度125℃的丙烯酸树脂，能有效的提高漆膜耐候性，磷酸锌能发挥钝化保护作用，采用聚酰胺和腰果壳油改性胺的加成物作为环氧树脂交联架桥剂，干性极快，涂层机械强度高，涂层致密，对钢铁表面的附着力高，综合防腐蚀性能十分优异。As can be seen from Table 1, the surface dryness of the common zinc-rich anti-corrosion primer based on epoxy resin prepared in embodiment 4 is 1h, and hard work is 120h, and artificial accelerated aging is 200h, and embodiment 1, embodiment 2 and embodiment The surface drying and hard drying time in 3 are far lower than that of Example 4, and the salt spray resistance and artificial accelerated aging are better than that of Example 4. In Example 1, Example 2 and Example 3 of the present invention, by adding glass The acrylic resin with a melting temperature of 125°C can effectively improve the weather resistance of the paint film. Zinc phosphate can play a passivation protection role. The adduct of polyamide and cashew nut shell oil modified amine is used as the epoxy resin cross-linking and bridging agent. Extremely fast drying, high mechanical strength of the coating, dense coating, high adhesion to the steel surface, and excellent comprehensive anti-corrosion performance.
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Effective date of registration: 20211022 Address after: 225000 tuanjiehe North Road West of Zhabei Road, Taixing Economic Development Zone, Taizhou City, Jiangsu Province Patentee after: Jiangsu Yunhu New Material Technology Co.,Ltd. Address before: 214161 No. 88, Chaoyang Road, South District, industrial park, Hudai Town, Binhu District, Wuxi City, Jiangsu Province Patentee before: WUXI TAIHU ANTI-CORROSION MATERIALS Co.,Ltd. |
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Denomination of invention: Quick drying zinc phosphate anti-corrosion primer based on epoxy resin and its preparation method Granted publication date: 20170725 Pledgee: Industrial Bank Co.,Ltd. Taizhou Branch Pledgor: Jiangsu Yunhu New Material Technology Co.,Ltd. Registration number: Y2025980021019 |