WO2019223026A1 - Coil coating based on eb-curing - Google Patents

Coil coating based on eb-curing Download PDF

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Publication number
WO2019223026A1
WO2019223026A1 PCT/CN2018/090115 CN2018090115W WO2019223026A1 WO 2019223026 A1 WO2019223026 A1 WO 2019223026A1 CN 2018090115 W CN2018090115 W CN 2018090115W WO 2019223026 A1 WO2019223026 A1 WO 2019223026A1
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parts
coil coating
curing
coating based
curing according
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PCT/CN2018/090115
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French (fr)
Chinese (zh)
Inventor
张颖利
吴桂军
吴岱轩
朱桂刚
何广平
张引
吕世昌
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无锡万博涂料化工有限公司
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Publication of WO2019223026A1 publication Critical patent/WO2019223026A1/en

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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
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • C09D175/14Polyurethanes having carbon-to-carbon unsaturated bonds
    • 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
    • C09D5/002Priming paints

Definitions

  • the invention relates to a coil coating based on EB curing, and belongs to the technical field of coatings.
  • coil coatings are widely used in rolled steel and rolled aluminum products.
  • Commercially available coil steel and aluminum coil coatings are generally solvent-based thermosetting coatings. This type of coating has many problems such as high VOC emissions and wasted energy.
  • EB curing coating is applied by dip coating, spray coating, spray coating, roll coating, or even vacuum coating, and then cured by EB to form a film.
  • EB has a large penetration depth, which can be used not only for thin coatings but also for thick coatings. Colored coatings of millimeters and even centimeters.
  • EB can also chemically combine the coating with the substrate and improve the adhesion of the coating to the substrate.
  • the UV-curable coatings are difficult to achieve the above-mentioned excellent performance.
  • EB curing coatings have high curing efficiency, curing under EB irradiation only takes about 1 to 3 seconds or less, while traditional solvent-based thermosetting coatings need to be cured at 250 ° C 25 ⁇ 35 seconds. 2. Energy saving, EB curing coating is fast curing at normal temperature, the energy consumption of the general production line is within 50KW, the energy consumption is about 1/10 ⁇ 1/5 of thermosetting coating. 3. EB curing coating has simple process, simple and compact equipment, and reduced operation space. 4. EB curing coating is environmentally friendly, contains no VOC, and has little environmental pollution. Compared with UV light curing coatings: 1.
  • EB curing coatings do not need to introduce more expensive photoinitiators, which can further reduce the cost of formulated products; 2. EB curing coatings will not migrate due to residual photoinitiators and photodecomposition products. Volatile, causing unpleasant odor, which is beneficial to the aging resistance of the material, and can be applied to packaging materials such as food and medicine.
  • the present invention proposes a variety of solutions for coil steel and aluminum coating based on EB curing.
  • Such solutions meet the requirements for promoting VOC emission reduction in the National “Thirteenth Five-Year Plan for the Prevention and Control of Volatile Organic Compounds”. Very broad application prospects, suitable for large-scale application promotion.
  • the purpose of the present invention is to reduce energy consumption, reduce VOC emissions, provide a variety of solutions for coil and aluminum coatings based on EB curing, and improve production efficiency.
  • the solution can be widely used in coating and printing of coil and aluminum products .
  • the coating obtained by polymerizing the following components is suitable for the primer, pigmented paint and topcoat of rolled steel and rolled aluminum. According to the existing inspection standards, the performance index of the obtained coating film meets the requirements.
  • the components contain:
  • Photosensitive resin polymer which is the main component of EB curing coatings.
  • the polymer is a modified oligomer having a double bond and contains at least one of epoxy acrylate, polyester acrylate, polyurethane acrylate, polyacrylate, and hyperbranched acrylic oligomer.
  • the photosensitive resin polymer of the EB curing primer is preferably a urethane acrylate, a hyperbranched acrylic oligomer, or a polyacrylate. From the viewpoint of the curing reaction speed, the urethane acrylate, polyester acrylate, and epoxy acrylate are preferred as the photosensitive resin polymer of the EB curing color paint.
  • the photosensitive resin polymer of the EB curing varnish is preferably urethane acrylate or polyacrylate.
  • Viscosity has a direct impact on the production speed of EB cured coatings. As the viscosity decreases, the production speed increases accordingly.
  • the viscosity of the resin has a decisive influence on the viscosity of the coating.
  • the preferred viscosity of the resin is 1,000 to 50,000 mPa ⁇ s (25 ° C).
  • Acrylate monomer not only has the function of reactive diluent, but also can affect the adhesion of the coating to the substrate.
  • the functionality of the selected acrylate monomer is 1 to 6.
  • the size of the functional group has an effect on the curing speed. The larger the functional group, the faster the curing, but the larger the functional group, the greater the viscosity. Therefore, the viscosity needs to be controlled at 5 to 500 mPa ⁇ s ( 25 °C), the monomer surface tension has an influence on the wetting of rolled steel and rolled aluminum substrates. Low surface tension helps improve the adhesion of the coating to the substrate. Therefore, acrylate monomers with a surface tension below 36 dyne are preferred.
  • the acrylic phosphate active diluent not only participates in the EB curing reaction, but also improves the adhesion to metals and improves pigment and filler dispersion and other functions.
  • each coating component by weight parts is: 20 to 60 parts of photosensitive resin oligomer, 20 to 55 parts of acrylic monomer, 0 to 60 parts of organic and inorganic pigment filler and Agent 0.5 to 5 parts.
  • the photosensitive resin oligomer is a resin having a double bond after being modified.
  • the photosensitive resin oligomer is at least one of epoxy acrylate, polyester acrylate, urethane acrylate, polyacrylate, and hyperbranched acrylic oligomer, and has a viscosity of 300 to 150,000 mPa ⁇ s at 25 ° C.
  • the organic auxiliary agent is a polyacrylate type, a polysiloxane-polyether copolymer type wetting and leveling agent, a non-silicone polymer, and a modified polysiloxane type antifoaming agent.
  • Organic auxiliaries can be wetting and leveling agents and defoamers.
  • Polyacrylates and polysiloxane-polyether copolymers are mainly used to wetting substrates; non-silicone polymers, modified Polysiloxane-based defoamers reduce surface tension in EB-cured coatings, inhibit foam generation or eliminate foam that has been generated.
  • the coil coating comprises a primer, a colored paint and a topcoat.
  • the primer is as follows by weight parts: 5 to 15 parts of hyperbranched acrylic oligomer, 15 to 20 parts of aliphatic urethane acrylate, 10 to 15 parts of polyacrylate, 5 to 5 of N, N-dimethylacrylamide 10 parts, 5 to 15 parts of hydroxyethyl methacrylate, 5 to 15 parts of tetrahydrofuran methyl acrylate, 1 to 5 parts of acrylic phosphate active diluent, 15 to 40 parts of organic and inorganic pigment fillers, and 0.2 to 1.0 of auxiliary agents Serving.
  • the colored paint by weight parts is as follows: 15-30 parts of aliphatic urethane acrylate, 10-25 parts of polyacrylate, 15-30 parts of dipropylene glycol diacrylate, and 5-15 parts of trimethylolpropane triacrylate , 5 to 15 parts of hydroxyethyl methacrylate, 5 to 40 parts of organic and inorganic pigments and fillers and 0.2 to 3.0 parts.
  • the top coat is as follows by weight parts: 25 to 40 parts of aliphatic urethane acrylate, 5 to 15 parts of hyperbranched acrylic oligomer, 15 to 30 parts of dipropylene glycol diacrylate, and trimethylolpropane triacrylate 10 -20 parts, 5-15 parts of hydroxyethyl methacrylate, and 0.2-2.0 parts of auxiliaries.
  • the EB-cured coating in the present invention has the advantages of high efficiency, energy saving, economy, environmental friendliness, etc., and is suitable for both rolled steel and rolled aluminum substrates.
  • the requirements for the promotion of VOC emission reduction in the Work Plan for Organic Pollution Prevention and Control have broad application prospects.
  • Example 1 The coating preparation method described in this example is as follows:
  • Primer 5 parts of hyperbranched acrylic oligomer, 15 parts of aliphatic urethane acrylate, 10 parts of polyacrylate, 5 to parts of N, N-dimethylacrylamide, 5 parts of hydroxyethyl methacrylate, tetrahydrofuran acrylate 5 parts of methyl ester, 1 part of acrylic phosphate active diluent, 15 parts of pigment and filler, and 0.2 part of auxiliary agent.
  • Color paint 15 parts of aliphatic urethane acrylate, 10 parts of polyacrylate, 15 parts of dipropylene glycol diacrylate, 5 to 15 parts of trimethylolpropane triacrylate, 5 to 15 parts of hydroxyethyl methacrylate, pigment 5 to 40 parts of filler and 0.2 to 3.0 parts of auxiliary agent.
  • Topcoat 25 parts of aliphatic urethane acrylate, 5 parts of hyperbranched acrylic oligomer, 15 parts of dipropylene glycol diacrylate, 10 parts of trimethylolpropane triacrylate, 5 parts of hydroxyethyl methacrylate, auxiliary 0.2 servings.
  • Example 2 The coating preparation method described in this example is as follows:
  • Primer 15 parts of hyperbranched acrylic oligomer, 20 parts of aliphatic urethane acrylate, 15 parts of polyacrylate, 10 parts of N, N-dimethylacrylamide, 15 parts of hydroxyethyl methacrylate, tetrahydrofuran methacrylate 15 parts of ester, 5 parts of acrylic phosphate active diluent, 40 parts of pigment and filler, and 1.0 part of auxiliary
  • Paint 30 parts of aliphatic urethane acrylate, 25 parts of polyacrylate, 30 parts of dipropylene glycol diacrylate, 15 parts of trimethylolpropane triacrylate, 15 parts of hydroxyethyl methacrylate, 40 parts of pigment and filler, and 3.0 parts of additives.
  • Topcoat 40 parts of aliphatic urethane acrylate, 15 parts of hyperbranched acrylic oligomer, 30 parts of dipropylene glycol diacrylate, 20 parts of trimethylolpropane triacrylate, 15 parts of hydroxyethyl methacrylate, auxiliary 2.0 servings.
  • the coil coating based on the EB curing system has the advantages of high efficiency, energy saving, economy, environmental protection, etc., and can replace traditional solvent-based thermosetting coatings, improve production efficiency, reduce energy consumption, and reduce VOC emissions.

Abstract

A coil coating based on EB curing, comprising the following components in parts by weight: 20 to 60 parts of a photosensitive resin oligomer, 20 to 55 parts of an acrylic monomer, 0 to 60 parts of an organic salt filler and an inorganic salt filler, and 0.5 to 5 parts of an adjuvant.

Description

一种基于EB固化的卷材涂料Coil coating based on EB curing 技术领域Technical field
本发明涉及一种基于EB固化的卷材涂料,属于涂料技术领域。The invention relates to a coil coating based on EB curing, and belongs to the technical field of coatings.
背景技术Background technique
目前,卷材涂料在卷钢和卷铝制品中应用广泛。市售的卷钢和卷铝涂料一般为溶剂型热固性涂料,该类型涂料存在着高VOC排放,浪费能源等诸多问题。EB固化涂料通过浸涂、淋涂、喷涂、辊涂,甚至真空涂等方法涂布后,再经EB固化成膜;EB穿透深度大,不仅可用于薄涂层,也可用于厚达数毫米甚至厘米的有色涂层,同时EB还可使涂层与基材产生化学结合,提高涂料与基材的附着力,紫外光固化涂料则难以达到上述优异的性能。At present, coil coatings are widely used in rolled steel and rolled aluminum products. Commercially available coil steel and aluminum coil coatings are generally solvent-based thermosetting coatings. This type of coating has many problems such as high VOC emissions and wasted energy. EB curing coating is applied by dip coating, spray coating, spray coating, roll coating, or even vacuum coating, and then cured by EB to form a film. EB has a large penetration depth, which can be used not only for thin coatings but also for thick coatings. Colored coatings of millimeters and even centimeters. At the same time, EB can also chemically combine the coating with the substrate and improve the adhesion of the coating to the substrate. The UV-curable coatings are difficult to achieve the above-mentioned excellent performance.
与传统溶剂型热固性涂料相比:1.EB固化涂料固化效率高,在EB照射下固化只需1~3秒左右或更短时间,而传统溶剂型热固性涂料则需在250℃高温下固化25~35秒。2.节省能源,EB固化涂料是常温快速固化,一般生产线能耗在50KW以内,能量消耗约为热固性涂料的1/10~1/5。3.EB固化涂料工艺简单、设备简单紧凑、缩小作业空间。4.EB固化涂料环保,不含VOC,对环境污染小。与UV光固化涂料相比:1.EB固化涂料不需要引入价格较贵的光引发剂,能进一步降低配方产品的成本;2.EB固化涂料不会因残留光引发剂及光分解产物迁移和挥发,引起难闻的臭味,有利于材料的耐老化性能,并可应用于食品、医药等包装材料。Compared with traditional solvent-based thermosetting coatings: 1. EB curing coatings have high curing efficiency, curing under EB irradiation only takes about 1 to 3 seconds or less, while traditional solvent-based thermosetting coatings need to be cured at 250 ° C 25 ~ 35 seconds. 2. Energy saving, EB curing coating is fast curing at normal temperature, the energy consumption of the general production line is within 50KW, the energy consumption is about 1/10 ~ 1/5 of thermosetting coating. 3. EB curing coating has simple process, simple and compact equipment, and reduced operation space. 4. EB curing coating is environmentally friendly, contains no VOC, and has little environmental pollution. Compared with UV light curing coatings: 1. EB curing coatings do not need to introduce more expensive photoinitiators, which can further reduce the cost of formulated products; 2. EB curing coatings will not migrate due to residual photoinitiators and photodecomposition products. Volatile, causing unpleasant odor, which is beneficial to the aging resistance of the material, and can be applied to packaging materials such as food and medicine.
为此,本发明提出了多种基于EB固化的卷钢和卷铝涂料解决方案,此类方案符合国家《“十三五”挥发性有机物污染防治工作方案》中推进VOC减排的要求,具有十分广泛的应用前景,适合大规模应用推广。To this end, the present invention proposes a variety of solutions for coil steel and aluminum coating based on EB curing. Such solutions meet the requirements for promoting VOC emission reduction in the National “Thirteenth Five-Year Plan for the Prevention and Control of Volatile Organic Compounds”. Very broad application prospects, suitable for large-scale application promotion.
发明内容Summary of the Invention
本发明的目的在于降低能耗,减少VOC排放,提供多种基于EB固化的卷钢和卷铝涂料解决方案,提高生产效率,该方案可广泛应用于卷钢和卷铝制品的涂装印刷中。The purpose of the present invention is to reduce energy consumption, reduce VOC emissions, provide a variety of solutions for coil and aluminum coatings based on EB curing, and improve production efficiency. The solution can be widely used in coating and printing of coil and aluminum products .
本发明通过研究发现,下列组分聚合得到的涂层适用于卷钢和卷铝的底漆、色漆及面漆,根据现有的检验标准,所得涂膜的性能指标符合要求,所述涂料组分含有:According to the present invention, through research, it is found that the coating obtained by polymerizing the following components is suitable for the primer, pigmented paint and topcoat of rolled steel and rolled aluminum. According to the existing inspection standards, the performance index of the obtained coating film meets the requirements. The components contain:
感光型树脂聚合物,它是EB固化涂料的主要成分。该聚合物为经改性后具有双键的齐聚物,包含环氧丙烯酸酯,聚酯丙烯酸酯,聚氨酯丙烯酸酯,聚丙烯酸酯、超支化丙烯酸低聚物中的至少一种。从对基材的附着力上考虑,EB固化底漆的感光型树脂聚合物优选聚氨酯丙烯酸酯、超支化丙烯酸低聚物、聚丙烯酸酯。从固化反应速度上考虑,EB固化色漆的感光型树脂聚合物优选聚氨酯丙烯酸酯、聚酯丙烯酸酯、环氧丙烯酸酯。从耐候性上考虑,EB固化光油的感光型树脂聚合物优选聚氨酯丙烯酸酯、聚丙烯酸酯。粘度对EB固化涂料生产速度有直接影响,随着粘度变小,生产速度相应加快。树脂的粘度大小对涂料的 粘度有决定性的影响,树脂的优选粘度在1000~50000mPa·s(25℃)。Photosensitive resin polymer, which is the main component of EB curing coatings. The polymer is a modified oligomer having a double bond and contains at least one of epoxy acrylate, polyester acrylate, polyurethane acrylate, polyacrylate, and hyperbranched acrylic oligomer. Considering the adhesion to the substrate, the photosensitive resin polymer of the EB curing primer is preferably a urethane acrylate, a hyperbranched acrylic oligomer, or a polyacrylate. From the viewpoint of the curing reaction speed, the urethane acrylate, polyester acrylate, and epoxy acrylate are preferred as the photosensitive resin polymer of the EB curing color paint. From the viewpoint of weather resistance, the photosensitive resin polymer of the EB curing varnish is preferably urethane acrylate or polyacrylate. Viscosity has a direct impact on the production speed of EB cured coatings. As the viscosity decreases, the production speed increases accordingly. The viscosity of the resin has a decisive influence on the viscosity of the coating. The preferred viscosity of the resin is 1,000 to 50,000 mPa · s (25 ° C).
丙烯酸酯单体,不仅具有活性稀释剂的作用,而且能够影响涂料对基材的附着力。所选用的丙烯酸酯单体官能度为1~6,官能团大小对固化速度有影响,官能团越大固化越快,但官能团越大粘度相对越大,因此还需控制粘度在5~500mPa·s(25℃),单体表面张力对卷钢、卷铝基材的润湿有影响,低表面张力有助于提高涂料对基材的附着力,因此优选表面张力低于36达因的丙烯酸酯单体,丙烯酸磷酸酯类活性稀释剂不仅参与EB固化反应,还可提高对金属的附着力,改善颜填料分散等功能。Acrylate monomer not only has the function of reactive diluent, but also can affect the adhesion of the coating to the substrate. The functionality of the selected acrylate monomer is 1 to 6. The size of the functional group has an effect on the curing speed. The larger the functional group, the faster the curing, but the larger the functional group, the greater the viscosity. Therefore, the viscosity needs to be controlled at 5 to 500 mPa · s ( 25 ℃), the monomer surface tension has an influence on the wetting of rolled steel and rolled aluminum substrates. Low surface tension helps improve the adhesion of the coating to the substrate. Therefore, acrylate monomers with a surface tension below 36 dyne are preferred. Body, the acrylic phosphate active diluent not only participates in the EB curing reaction, but also improves the adhesion to metals and improves pigment and filler dispersion and other functions.
一种基于EB固化的卷材涂料,各涂料组分按重量份计为:感光型树脂齐聚物20~60份,丙烯酸单体20~55份,有机和无机颜填料0~60份和助剂0.5~5份。A coil coating based on EB curing, each coating component by weight parts is: 20 to 60 parts of photosensitive resin oligomer, 20 to 55 parts of acrylic monomer, 0 to 60 parts of organic and inorganic pigment filler and Agent 0.5 to 5 parts.
所述感光型树脂齐聚物为经改性后具有双键的树脂。所述感光型树脂齐聚物为环氧丙烯酸酯,聚酯丙烯酸酯,聚氨酯丙烯酸酯,聚丙烯酸酯、超支化丙烯酸低聚物中的至少一种,25℃时黏度为300~150000mPa·s。The photosensitive resin oligomer is a resin having a double bond after being modified. The photosensitive resin oligomer is at least one of epoxy acrylate, polyester acrylate, urethane acrylate, polyacrylate, and hyperbranched acrylic oligomer, and has a viscosity of 300 to 150,000 mPa · s at 25 ° C.
所述有机助剂为聚丙烯酸酯类、聚硅氧烷-聚醚共聚物类润湿流平剂和非硅聚合物、改性聚硅氧烷类消泡剂。有机助剂可以为润湿流平剂和消泡剂,聚丙烯酸酯类、聚硅氧烷-聚醚共聚物类润湿流平剂的主要作用为润湿基材;非硅聚合物、改性聚硅氧烷类消泡剂则在EB固化涂料中降低表面张力,抑制泡沫产生或消除已产生的泡沫。The organic auxiliary agent is a polyacrylate type, a polysiloxane-polyether copolymer type wetting and leveling agent, a non-silicone polymer, and a modified polysiloxane type antifoaming agent. Organic auxiliaries can be wetting and leveling agents and defoamers. Polyacrylates and polysiloxane-polyether copolymers are mainly used to wetting substrates; non-silicone polymers, modified Polysiloxane-based defoamers reduce surface tension in EB-cured coatings, inhibit foam generation or eliminate foam that has been generated.
所述卷材涂料包括底漆、有色漆和面漆。The coil coating comprises a primer, a colored paint and a topcoat.
所述底漆按重量份计如下:超支化丙烯酸低聚物5~15份、脂肪族聚氨酯丙烯酸酯15~20份、聚丙烯酸酯10~15份、N,N-二甲基丙烯酰胺5~10份、甲基丙烯酸羟乙酯5~15份、丙烯酸四氢呋喃甲酯5~15份、丙烯酸磷酸酯类活性稀释剂1~5份、有机和无机颜填料15~40份以及助剂0.2~1.0份。The primer is as follows by weight parts: 5 to 15 parts of hyperbranched acrylic oligomer, 15 to 20 parts of aliphatic urethane acrylate, 10 to 15 parts of polyacrylate, 5 to 5 of N, N-dimethylacrylamide 10 parts, 5 to 15 parts of hydroxyethyl methacrylate, 5 to 15 parts of tetrahydrofuran methyl acrylate, 1 to 5 parts of acrylic phosphate active diluent, 15 to 40 parts of organic and inorganic pigment fillers, and 0.2 to 1.0 of auxiliary agents Serving.
所述有色漆按重量份计如下:脂肪族聚氨酯丙烯酸酯15~30份、聚丙烯酸酯10~25份、二丙二醇二丙烯酸酯15~30份、三羟甲基丙烷三丙烯酸酯5~15份、甲基丙烯酸羟乙酯5~15份、有机和无机颜填料5~40份以及助剂0.2~3.0份。The colored paint by weight parts is as follows: 15-30 parts of aliphatic urethane acrylate, 10-25 parts of polyacrylate, 15-30 parts of dipropylene glycol diacrylate, and 5-15 parts of trimethylolpropane triacrylate , 5 to 15 parts of hydroxyethyl methacrylate, 5 to 40 parts of organic and inorganic pigments and fillers and 0.2 to 3.0 parts.
所述面漆按重量份计如下:脂肪族聚氨酯丙烯酸酯25~40份、超支化丙烯酸低聚物5~15份、二丙二醇二丙烯酸酯15~30份、三羟甲基丙烷三丙烯酸酯10~20份、甲基丙烯酸羟乙酯5~15份、助剂0.2~2.0份。The top coat is as follows by weight parts: 25 to 40 parts of aliphatic urethane acrylate, 5 to 15 parts of hyperbranched acrylic oligomer, 15 to 30 parts of dipropylene glycol diacrylate, and trimethylolpropane triacrylate 10 -20 parts, 5-15 parts of hydroxyethyl methacrylate, and 0.2-2.0 parts of auxiliaries.
EB固化时,其能量为10~500keV,剂量为5~200kGy。When EB is cured, its energy is 10 to 500 keV and the dose is 5 to 200 kGy.
本发明的有益效果:本发明中基于EB固化的涂料具有高效、节能、经济、环境友好等优点,并且同时适用于卷钢和卷铝两种基材,符合国家《“十三五”挥发性有机物污染防治工作方案》中推进VOC减排的要求,具有广泛的应用前景。Beneficial effects of the present invention: The EB-cured coating in the present invention has the advantages of high efficiency, energy saving, economy, environmental friendliness, etc., and is suitable for both rolled steel and rolled aluminum substrates. The requirements for the promotion of VOC emission reduction in the Work Plan for Organic Pollution Prevention and Control have broad application prospects.
具体实施方式Detailed ways
为了更进一步阐述本发明为达到预定发明目的所采取的技术方式及作用,以下通过实施例,对本发明进行进一步说明。In order to further explain the technical methods and functions adopted by the present invention to achieve the intended purpose of the present invention, the present invention will be further described below through examples.
在制备EB固化涂料时,先根据上述组分及其重量比配料,再利用砂磨机和分散机等设备进行混合搅拌,使各组分充分混合均匀。When preparing the EB curing coating, firstly mix the ingredients according to the above components and their weight ratios, and then use a sand mill and a disperser to mix and stir to make the components fully mixed uniformly.
实施例1 本实施例中所述的涂料制备方法如下:Example 1 The coating preparation method described in this example is as follows:
底漆:超支化丙烯酸低聚物5份、脂肪族聚氨酯丙烯酸酯15份、聚丙烯酸酯10份、N,N-二甲基丙烯酰胺5~份、甲基丙烯酸羟乙酯5份、丙烯酸四氢呋喃甲酯5份、丙烯酸磷酸酯类活性稀释剂1份、颜填料15份以及助剂0.2份。Primer: 5 parts of hyperbranched acrylic oligomer, 15 parts of aliphatic urethane acrylate, 10 parts of polyacrylate, 5 to parts of N, N-dimethylacrylamide, 5 parts of hydroxyethyl methacrylate, tetrahydrofuran acrylate 5 parts of methyl ester, 1 part of acrylic phosphate active diluent, 15 parts of pigment and filler, and 0.2 part of auxiliary agent.
色漆:脂肪族聚氨酯丙烯酸酯15份、聚丙烯酸酯10份、二丙二醇二丙烯酸酯15份、三羟甲基丙烷三丙烯酸酯5~15份、甲基丙烯酸羟乙酯5~15份、颜填料5~40份以及助剂0.2~3.0份。Color paint: 15 parts of aliphatic urethane acrylate, 10 parts of polyacrylate, 15 parts of dipropylene glycol diacrylate, 5 to 15 parts of trimethylolpropane triacrylate, 5 to 15 parts of hydroxyethyl methacrylate, pigment 5 to 40 parts of filler and 0.2 to 3.0 parts of auxiliary agent.
面漆:脂肪族聚氨酯丙烯酸酯25份、超支化丙烯酸低聚物5份、二丙二醇二丙烯酸酯15份、三羟甲基丙烷三丙烯酸酯10份、甲基丙烯酸羟乙酯5份、助剂0.2份。Topcoat: 25 parts of aliphatic urethane acrylate, 5 parts of hyperbranched acrylic oligomer, 15 parts of dipropylene glycol diacrylate, 10 parts of trimethylolpropane triacrylate, 5 parts of hydroxyethyl methacrylate, auxiliary 0.2 servings.
使用RDS#4刮棒,在钢板上涂覆上述底漆涂料,进行EB固化(照射高度:50mm,输送带速度:70m/min,EB能量:100keV,EB固化剂量:50kGy),然后涂覆色漆涂料进行EB照射,最后涂覆面漆涂料进行EB照射,由此制备成评价用样板。Using the RDS # 4 scraper, apply the above primer coating on the steel plate to perform EB curing (irradiation height: 50mm, conveyor speed: 70m / min, EB energy: 100keV, EB curing dose: 50kGy), and then apply color The enamel paint was subjected to EB irradiation, and the top coat paint was finally applied to EB irradiation to prepare a sample for evaluation.
实施例2 本实施例中所述的涂料制备方法如下:Example 2 The coating preparation method described in this example is as follows:
底漆:超支化丙烯酸低聚物15份、脂肪族聚氨酯丙烯酸酯20份、聚丙烯酸酯15份、N,N-二甲基丙烯酰胺10份、甲基丙烯酸羟乙酯15份、丙烯酸四氢呋喃甲酯15份、丙烯酸磷酸酯类活性稀释剂5份、颜填料40份以及助剂1.0份Primer: 15 parts of hyperbranched acrylic oligomer, 20 parts of aliphatic urethane acrylate, 15 parts of polyacrylate, 10 parts of N, N-dimethylacrylamide, 15 parts of hydroxyethyl methacrylate, tetrahydrofuran methacrylate 15 parts of ester, 5 parts of acrylic phosphate active diluent, 40 parts of pigment and filler, and 1.0 part of auxiliary
色漆:脂肪族聚氨酯丙烯酸酯30份、聚丙烯酸酯25份、二丙二醇二丙烯酸酯30份、三羟甲基丙烷三丙烯酸酯15份、甲基丙烯酸羟乙酯15份、颜填料40份以及助剂3.0份。Paint: 30 parts of aliphatic urethane acrylate, 25 parts of polyacrylate, 30 parts of dipropylene glycol diacrylate, 15 parts of trimethylolpropane triacrylate, 15 parts of hydroxyethyl methacrylate, 40 parts of pigment and filler, and 3.0 parts of additives.
面漆:脂肪族聚氨酯丙烯酸酯40份、超支化丙烯酸低聚物15份、二丙二醇二丙烯酸酯30份、三羟甲基丙烷三丙烯酸酯20份、甲基丙烯酸羟乙酯15份、助剂2.0份。Topcoat: 40 parts of aliphatic urethane acrylate, 15 parts of hyperbranched acrylic oligomer, 30 parts of dipropylene glycol diacrylate, 20 parts of trimethylolpropane triacrylate, 15 parts of hydroxyethyl methacrylate, auxiliary 2.0 servings.
使用RDS#4刮棒,在铝板上涂覆上述底漆涂料,进行EB照射(照射高度:50mm,输送带速度:70m/min,EB能量:100keV,EB固化剂量:50kGy),然后涂覆色漆涂料进行EB照射,最后涂覆面漆涂料进行EB照射,由此制备成评价用样板。Using an RDS # 4 scraper, apply the above primer coating on an aluminum plate, and perform EB irradiation (irradiation height: 50mm, conveyor speed: 70m / min, EB energy: 100keV, EB curing dose: 50kGy), and then apply color The enamel paint was subjected to EB irradiation, and the top coat paint was finally applied to EB irradiation to prepare a sample for evaluation.
根据实施例1制备的样板,与传统溶剂型卷钢涂料对比结果如下表:The comparison results between the sample prepared according to Example 1 and the traditional solvent-based coil coating are shown in the following table:
表1:EB底漆与溶剂型卷钢底漆对比Table 1: Comparison of EB primer and solvent-based coil steel primer
Figure PCTCN2018090115-appb-000001
Figure PCTCN2018090115-appb-000001
Figure PCTCN2018090115-appb-000002
Figure PCTCN2018090115-appb-000002
表2:EB色漆与溶剂型卷钢色漆对比Table 2: Comparison of EB color paint and solvent-based coil steel color paint
Figure PCTCN2018090115-appb-000003
Figure PCTCN2018090115-appb-000003
表3:EB面漆与溶剂型卷钢面漆对比Table 3: Comparison of EB topcoat and solvent-based coil steel topcoat
Figure PCTCN2018090115-appb-000004
Figure PCTCN2018090115-appb-000004
本发明中,基于EB固化体系的卷材涂料具有高效、节能、经济、环保等优点,能够替代传统的溶剂型热固性涂料,提高生产效率,降低能耗,减少VOC的排放。In the present invention, the coil coating based on the EB curing system has the advantages of high efficiency, energy saving, economy, environmental protection, etc., and can replace traditional solvent-based thermosetting coatings, improve production efficiency, reduce energy consumption, and reduce VOC emissions.
以上所述,仅是本发明的较佳实例而已,并非对本发明做任何形式上的限制,任何熟悉本专业的技术人员,在不脱离本发明技术方案范围的前提下,当可利用上述描述的技术内容做出各种变化和改进。但凡是未脱离本发明技术方案内容,依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,仍属于发明技术方案的范围内。The above description is only a preferred example of the present invention, and does not limit the present invention in any form. Any person skilled in the art can use the above description without departing from the scope of the technical solution of the present invention. Various changes and improvements have been made to the technical content. As long as it does not depart from the technical solution of the present invention, any simple modifications, equivalent changes, and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims (9)

  1. 一种基于EB固化的卷材涂料,其特征是各涂料组分按重量份计为:感光型树脂齐聚物20~60份,丙烯酸单体20~55份,有机和无机颜填料0~60份和助剂0.5~5份。A coil coating based on EB curing, characterized in that each coating component by weight parts is: 20 to 60 parts of photosensitive resin oligomer, 20 to 55 parts of acrylic monomer, and 0 to 60 of organic and inorganic pigment filler Parts and auxiliaries 0.5 to 5 parts.
  2. 如权利要求1所述基于EB固化的卷材涂料,其特征是:所述感光型树脂齐聚物为经改性后具有双键的树脂。The coil coating based on EB curing according to claim 1, wherein the photosensitive resin oligomer is a resin having a double bond after modification.
  3. 如权利要求2所述基于EB固化的卷材涂料,其特征是:所述感光型树脂齐聚物为环氧丙烯酸酯,聚酯丙烯酸酯,聚氨酯丙烯酸酯,聚丙烯酸酯、超支化丙烯酸低聚物中的至少一种,25℃时黏度为300~150000mPa·s。The coil coating based on EB curing according to claim 2, wherein the photosensitive resin oligomer is epoxy acrylate, polyester acrylate, polyurethane acrylate, polyacrylate, hyperbranched acrylic oligomer At least one of them has a viscosity of 300 to 150,000 mPa · s at 25 ° C.
  4. 如权利要求1所述基于EB固化的卷材涂料,其特征是:所述有机助剂为聚丙烯酸酯类、聚硅氧烷-聚醚共聚物类润湿流平剂和非硅聚合物、改性聚硅氧烷类消泡剂。The coil coating based on EB curing according to claim 1, characterized in that the organic auxiliary agent is a polyacrylate type, a polysiloxane-polyether copolymer type wetting and leveling agent, and a non-silicone polymer, Modified polysiloxane defoamer.
  5. 如权利要求1所述基于EB固化的卷材涂料,其特征是:所述卷材涂料包括底漆、有色漆和面漆。The coil coating based on EB curing according to claim 1, wherein the coil coating comprises a primer, a colored paint and a topcoat.
  6. 如权利要求1所述基于EB固化的卷材涂料,其特征是所述底漆按重量份计如下:超支化丙烯酸低聚物5~15份、脂肪族聚氨酯丙烯酸酯15~20份、聚丙烯酸酯10~15份、N,N-二甲基丙烯酰胺5~10份、甲基丙烯酸羟乙酯5~15份、丙烯酸四氢呋喃甲酯5~15份、丙烯酸磷酸酯类活性稀释剂1~5份、有机和无机颜填料15~40份以及助剂0.2~1.0份。The coil coating based on EB curing according to claim 1, characterized in that the primer is based on parts by weight as follows: 5 to 15 parts of hyperbranched acrylic oligomer, 15 to 20 parts of aliphatic urethane acrylate, polyacrylic acid 10 to 15 parts of esters, 5 to 10 parts of N, N-dimethylacrylamide, 5 to 15 parts of hydroxyethyl methacrylate, 5 to 15 parts of tetrahydrofuran methyl acrylate, and 1 to 5 reactive thinners of acrylic acid phosphate esters Parts, 15 to 40 parts of organic and inorganic pigments and fillers and 0.2 to 1.0 parts.
  7. [根据细则91更正 03.08.2018] 
    如权利要求1所述基于EB固化的卷材涂料,其特征是所述有色漆按重量份计如下:脂肪族聚氨酯丙烯酸酯15~30份、聚丙烯酸酯10~25份、二丙二醇二丙烯酸酯15~30份、三羟甲基丙烷三丙烯酸酯5~15份、甲基丙烯酸羟乙酯5~15份、有机和无机颜填料5~40份以及助剂0.2~3.0份。
    [Correction under Rule 91 03.08.2018]
    The coil coating based on EB curing according to claim 1, wherein the colored paint is as follows by weight parts: 15-30 parts of aliphatic urethane acrylate, 10-25 parts of polyacrylate, and dipropylene glycol diacrylate 15 to 30 parts, 5 to 15 parts of trimethylolpropane triacrylate, 5 to 15 parts of hydroxyethyl methacrylate, 5 to 40 parts of organic and inorganic pigments and fillers and 0.2 to 3.0 parts.
  8. [根据细则91更正 03.08.2018] 
    如权利要求1所述基于EB固化的卷材涂料,其特征是所述面漆按重量份计如下:脂肪族聚氨酯丙烯酸酯25~40份、超支化丙烯酸低聚物5~15份、二丙二醇二丙烯酸酯15~30份、三羟甲基丙烷三丙烯酸酯10~20份、甲基丙烯酸羟乙酯5~15份、助剂0.2~2.0份。
    [Correction under Rule 91 03.08.2018]
    The coil coating based on EB curing according to claim 1, characterized in that the top coat is as follows by weight parts: 25 to 40 parts of aliphatic urethane acrylate, 5 to 15 parts of hyperbranched acrylic oligomer, dipropylene glycol 15-30 parts of diacrylate, 10-20 parts of trimethylolpropane triacrylate, 5-15 parts of hydroxyethyl methacrylate, and 0.2-2.0 parts of adjuvant.
  9. [根据细则91更正 03.08.2018] 
    如权利要求1所述基于EB固化的卷材涂料,其特征是:EB固化能量为10~500keV,剂量为5~200kGy。
    [Correction under Rule 91 03.08.2018]
    The coil coating based on EB curing according to claim 1, wherein the EB curing energy is 10-500 keV and the dosage is 5-200 kGy.
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