CN1228404C - White thermosetting epoxy polyester powder coating with thin coating and preparation method thereof - Google Patents
White thermosetting epoxy polyester powder coating with thin coating and preparation method thereof Download PDFInfo
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- CN1228404C CN1228404C CN 02155204 CN02155204A CN1228404C CN 1228404 C CN1228404 C CN 1228404C CN 02155204 CN02155204 CN 02155204 CN 02155204 A CN02155204 A CN 02155204A CN 1228404 C CN1228404 C CN 1228404C
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- 238000000576 coating method Methods 0.000 title claims abstract description 100
- 239000011248 coating agent Substances 0.000 title claims abstract description 78
- 239000000843 powder Substances 0.000 title claims abstract description 78
- 229920001187 thermosetting polymer Polymers 0.000 title claims abstract description 28
- 229920000728 polyester Polymers 0.000 title claims abstract description 25
- 239000004593 Epoxy Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- 229920001225 polyester resin Polymers 0.000 claims abstract description 26
- 239000004645 polyester resin Substances 0.000 claims abstract description 26
- 239000003822 epoxy resin Substances 0.000 claims abstract description 23
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 23
- 239000001023 inorganic pigment Substances 0.000 claims abstract description 17
- 239000000049 pigment Substances 0.000 claims abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 72
- 239000004408 titanium dioxide Substances 0.000 claims description 36
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 35
- 235000012438 extruded product Nutrition 0.000 claims description 20
- 239000004925 Acrylic resin Substances 0.000 claims description 18
- 229920000178 Acrylic resin Polymers 0.000 claims description 18
- 229920006395 saturated elastomer Polymers 0.000 claims description 18
- 239000002131 composite material Substances 0.000 claims description 14
- 238000007873 sieving Methods 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 239000004615 ingredient Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000003607 modifier Substances 0.000 claims description 5
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- UMHKOAYRTRADAT-UHFFFAOYSA-N [hydroxy(octoxy)phosphoryl] octyl hydrogen phosphate Chemical compound CCCCCCCCOP(O)(=O)OP(O)(=O)OCCCCCCCC UMHKOAYRTRADAT-UHFFFAOYSA-N 0.000 claims description 4
- XMQYIPNJVLNWOE-UHFFFAOYSA-N dioctyl hydrogen phosphite Chemical compound CCCCCCCCOP(O)OCCCCCCCC XMQYIPNJVLNWOE-UHFFFAOYSA-N 0.000 claims description 4
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical group CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 6
- 239000006185 dispersion Substances 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- -1 wherein Substances 0.000 description 1
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Abstract
本发明属于热固性粉末涂料领域，特别涉及一种具备薄涂层化的白色热固性环氧聚酯粉末涂料及其制备方法。本发明是采用无机颜料表面改性及其分散技术，以保证颜料粒子在高分子聚合物基体中均匀、高效分散，使热固性粉末涂料的涂膜遮盖率提高，而且具有优良的流平性能和力学性能，所述的涂料中，无机颜料粉体∶环氧树脂∶聚酯树脂∶流平剂的重量比为21～33∶28～34∶33～39∶3～6。The invention belongs to the field of thermosetting powder coatings, in particular to a white thermosetting epoxy polyester powder coating with thin coating and a preparation method thereof. The present invention adopts surface modification and dispersion technology of inorganic pigments to ensure uniform and high-efficiency dispersion of pigment particles in the polymer matrix, so as to improve the film covering rate of thermosetting powder coatings, and has excellent leveling performance and mechanical properties. Performance, in the coating, the weight ratio of inorganic pigment powder: epoxy resin: polyester resin: leveling agent is 21-33:28-34:33-39:3-6.
Description
技术领域Technical field
本发明属于热固性粉末涂料领域，特别涉及一种具备薄涂层化的白色热固性环氧聚酯粉末涂料及其制备方法。The invention belongs to the field of thermosetting powder coatings, in particular to a white thermosetting epoxy polyester powder coating with thin coating and a preparation method thereof.
背景技术 Background technique
热固性粉末涂料主要应用于家电、汽车以及管道和金属构件等方面的防锈和装饰。热固性粉末涂料具有无溶剂、无公害、一次涂装就可形成涂层、喷溢涂料可以回收再利用等特点。Thermosetting powder coatings are mainly used for rust prevention and decoration of household appliances, automobiles, pipes and metal components. Thermosetting powder coatings have the characteristics of solvent-free, pollution-free, coatings can be formed in one coating, and spilled coatings can be recycled and reused.
粉末涂料的涂膜厚度是决定粉末涂层外观的一个重要因素，较厚涂膜具有较好的流平性，但是许多应用领域，如用于汽车车身的透明粉末涂料、用于卷材外表的涂料、用于罐头壳的涂料等，涂膜必须薄涂层化。为了扩大粉末涂料的应用范围，粉末涂料必须向薄涂层化方向发展，这已是人们的共识。因此，寻找实现粉末涂料的涂膜薄涂层化的有效途径显得十分重要和紧迫。在技术上具有很大的挑战性。The coating film thickness of powder coating is an important factor determining the appearance of powder coating. Thicker coating film has better leveling property, but many application fields, such as transparent powder coating for automobile body, For coatings, coatings for can shells, etc., the coating film must be thinned. In order to expand the application range of powder coatings, powder coatings must be developed in the direction of thin coating, which is a consensus. Therefore, it is very important and urgent to find an effective way to realize the coating film thinning of powder coatings. Technically very challenging.
Coating World J.，1996，1，57报导了通过树脂化学和工艺进步以及严格控制粉末涂料的粒径来实现粉末涂料的薄涂层化。The Canmaker，1993，5，41和涂料工业，2001，4，29分别报导了在日本、美国和欧洲建成了粒度分布5-20微米、平均粒度10-15微米的粉末涂料已获得在卷材涂装线应用，其中在美国的一条试验性卷材粉末涂装线，其涂膜厚度为25微米。涂料工业，2001，11，5报导分析了实现粉末涂装薄涂层化需要解决的技术问题，如：粉末涂料用树脂的熔融粘度低，但树脂的玻璃化温度又不低；颜料的分散性要好，遮盖力要强；粉末涂料的粒度要小，分布要窄；粉末涂料干粉流动性和带静电性能好等问题。这项技术不仅涉及的问题和技术难度很大，而且粉末涂料的生产成本较高。Coating World J., 1996, 1, 57 reported the thin coating of powder coatings through resin chemistry and technological progress and strict control of the particle size of powder coatings. The Canmaker, 1993, 5, 41 and Coatings Industry, 2001, 4, 29 respectively reported in Japan, the United States and Europe that powder coatings with a particle size distribution of 5-20 microns and an average particle size of 10-15 microns have been obtained in coil coatings. Line application, where a pilot coil powder coating line in the US had a film thickness of 25 microns. Coating Industry, 2001, Nov. 5, reported and analyzed the technical problems that need to be solved to realize the thin coating of powder coating, such as: the melt viscosity of the resin for powder coating is low, but the glass transition temperature of the resin is not low; the dispersibility of the pigment It is good, the hiding power is strong; the particle size of the powder coating should be small and the distribution should be narrow; the powder coating dry powder fluidity and electrostatic performance are good. Not only the problems and technical difficulties involved in this technology are very high, but also the production cost of powder coating is relatively high.
通常情况下，对深色粉末涂料来说，不需要其涂膜太厚就能起到对深色的金属表面的保护和遮盖效果。但是，对于白色粉末涂料，要保证其涂膜对深色金属表面有优良的保护、修饰和遮盖效果，就必须使其涂膜达到一定厚度，一般需要达到70～80微米。这与溶剂型涂料的涂膜厚度(20～30微米)相比，不仅涂膜厚，而且成本也高。Under normal circumstances, for dark powder coatings, the coating film does not need to be too thick to protect and cover dark metal surfaces. However, for white powder coatings, in order to ensure that the coating film has excellent protection, modification and covering effects on dark metal surfaces, the coating film must reach a certain thickness, generally 70-80 microns. Compared with the coating film thickness (20-30 microns) of solvent-based coatings, not only the coating film is thick, but also the cost is high.
发明内容Contents of the invention
本发明的目的之一是克服已有白色热固性环氧聚酯粉末涂料在涂膜较薄(小于45～50微米)时，其遮盖效果和流平性差的缺点，提供一种具备薄涂层化的白色热固性环氧聚酯粉末涂料。One of the purposes of the present invention is to overcome the shortcomings of the existing white thermosetting epoxy polyester powder coatings when the coating film is thin (less than 45-50 microns), and its hiding effect and poor leveling, and to provide a thin coating White thermosetting epoxy polyester powder coating.
本发明的另一目的是提供一种具备薄涂层化的白色热固性环氧聚酯粉末涂料的制备方法。Another object of the present invention is to provide a method for preparing a thin-coated white thermosetting epoxy polyester powder coating.
本发明的技术方案是采用无机颜料表面改性及其分散技术，以保证颜料粒子在高分子聚合物基体中均匀、高效分散，使热固性粉末涂料的涂膜遮盖率提高，而且具有优良的流平性能和力学性能。The technical solution of the present invention is to use the surface modification of inorganic pigments and its dispersion technology to ensure that the pigment particles are uniformly and efficiently dispersed in the polymer matrix, so that the covering rate of the coating film of the thermosetting powder coating is improved, and it has excellent leveling properties and mechanical properties.
本发明的具备薄涂层化的白色热固性环氧聚酯粉末涂料是由无机颜料粉体、环氧树脂、聚酯树脂和流平剂组成，其中，无机颜料粉体∶环氧树脂∶聚酯树脂∶流平剂的重量比为21～33∶28～34∶33～39∶3～6。The white thermosetting epoxy polyester powder coating with thin coating of the present invention is made up of inorganic pigment powder, epoxy resin, polyester resin and leveling agent, wherein, inorganic pigment powder: epoxy resin: polyester The weight ratio of resin: leveling agent is 21-33:28-34:33-39:3-6.
本发明的具备薄涂层化的白色热固性环氧聚酯粉末涂料的制备方法包括下列步骤：The preparation method of the white thermosetting epoxy polyester powder coating possessing thin coating of the present invention comprises the following steps:
(1).将无机颜料与改性剂按重量比97.5～99.8∶0.2～2.5预混合，在100～110℃干法改性，得到高分散性的无机颜料粉体；(1). Pre-mix the inorganic pigment and the modifier at a weight ratio of 97.5-99.8:0.2-2.5, and dry-modify at 100-110°C to obtain a highly dispersible inorganic pigment powder;
(2).将步骤(1)的高分散性的无机颜料粉体与环氧树脂、聚酯树脂和流平剂按重量比为21～33∶28～34∶33～39∶3～6的比例配料和充分预混合，在120～130℃的条件下熔融挤出，得到挤出产物；(2). The highly dispersible inorganic pigment powder of step (1) and epoxy resin, polyester resin and leveling agent are 21～33:28～34:33～39:3～6 by weight Proportional ingredients and full premixing, melt extrusion at 120-130°C to obtain extruded products;
(3).将步骤(2)的挤出产物粉磨，并200目筛分分级后，制得具备薄涂层化的白色热固性环氧聚酯粉末涂料。(3). Grinding the extruded product of step (2), and sieving and classifying with 200 meshes, a white thermosetting epoxy polyester powder coating with thin coating is obtained.
所述的无机颜料为二氧化钛或二氧化钛与硫酸钡重量比为66∶34的复合粉体。The inorganic pigment is titanium dioxide or a composite powder with a weight ratio of titanium dioxide and barium sulfate of 66:34.
所述的改性剂为硬脂酸、氨基硅烷、四异丙基二(亚磷酸二辛酯)钛酸酯或异丙基(焦磷酸二辛酯)钛酸酯等。The modifying agent is stearic acid, aminosilane, tetraisopropyl bis (dioctyl phosphite) titanate or isopropyl (dioctyl pyrophosphate) titanate and the like.
所述的环氧树脂是E-12(604)型环氧树脂(黄山市善孚化工厂生产，以下同)；Described epoxy resin is E-12 (604) type epoxy resin (Huangshan City Shanfu chemical plant production, hereinafter the same);
所述的聚酯树脂是YZ9802饱和聚酯树脂(江苏仪征市特种聚酯厂生产，以下同)；Described polyester resin is YZ9802 saturated polyester resin (produced by Jiangsu Yizheng City Special Polyester Factory, hereinafter the same);
所述的流平剂是503丙烯酸树脂流平剂(安徽神剑化工有限责任公司生产，以下同)。Described leveling agent is 503 acrylic resin leveling agents (produced by Anhui Shenjian Chemical Co., Ltd., the same below).
本发明采用颜料表面改性及其高效分散技术制得的具备薄涂层化的白色热固性环氧聚酯粉末涂料，具有无机颜料分散性和涂膜流平性好的特点，与同类热固性环氧聚酯粉末涂料相比，在涂膜成本、遮盖率和其它性能不变的情况下，可使涂膜厚度由70～80微米减薄到45-50微米。The present invention adopts pigment surface modification and high-efficiency dispersion technology to prepare white thermosetting epoxy polyester powder coating with thin coating. Compared with polyester powder coatings, the thickness of the coating film can be reduced from 70-80 microns to 45-50 microns when the film cost, hiding rate and other properties remain unchanged.
本发明的具备薄涂层化的白色热固性环氧聚酯粉末涂料制备方法简便，成本低廉，易于工业化和推广应用。The preparation method of the white thermosetting epoxy polyester powder coating with thin coating is simple and convenient, the cost is low, and it is easy to be industrialized and popularized.
具体实施方式 Detailed ways
实施例1Example 1
(1).将市售二氧化钛与硬脂酸按重量比为99.8∶0.2预混合，在100～110℃干法改性，得到高分散性二氧化钛粉体。(1). Commercially available titanium dioxide and stearic acid are premixed at a weight ratio of 99.8:0.2, and modified in a dry method at 100-110° C. to obtain highly dispersible titanium dioxide powder.
(2).将步骤(1)的高分散性二氧化钛粉体与E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂按重量比为24∶33∶38∶5配料，并充分预混合，在120～130℃的条件下熔融挤出，得到挤出产物。(2). The highly dispersible titanium dioxide powder of step (1) and E-12 (604) type epoxy resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agent are 24: 33: 38 by weight: 5 batching, and fully pre-mixed, and melted and extruded under the condition of 120-130 ° C to obtain an extruded product.
(3).将挤出产物粉磨，并在200目筛分分级后，制得具备薄涂层化的白色热固性环氧聚酯粉末涂料；其中涂料由二氧化钛、E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂组成。(3). Grind the extruded product, and after sieving and classifying at 200 mesh, a white thermosetting epoxy polyester powder coating with thin coating is obtained; wherein the coating is made of titanium dioxide, E-12 (604) ring Oxygen resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agent.
实施例2Example 2
(1).将市售二氧化钛与氨基硅烷按重量比为98.5∶1.5预混合，在100～110℃干法改性，得到高分散性二氧化钛粉体。(1). Premix commercially available titanium dioxide and aminosilane in a weight ratio of 98.5:1.5, and dry-modify at 100-110° C. to obtain highly dispersible titanium dioxide powder.
(2).将步骤(1)的高分散性二氧化钛粉体与E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂按重量比为22∶34∶39∶5配料，并充分预混合，在120～130℃的条件下熔融挤出，得到挤出产物。(2). The highly dispersible titanium dioxide powder of step (1) and E-12 (604) type epoxy resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agent are 22: 34: 39 by weight: 5 batching, and fully pre-mixed, and melted and extruded under the condition of 120-130 ° C to obtain an extruded product.
(3).将挤出产物粉磨，并在200目筛分分级后，制得具备薄涂层化的白色热固性环氧聚酯粉末涂料；其中涂料由二氧化钛、E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂组成。(3). Grind the extruded product, and after sieving and classifying at 200 mesh, a white thermosetting epoxy polyester powder coating with thin coating is obtained; wherein the coating is made of titanium dioxide, E-12 (604) ring Oxygen resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agent.
实施例3Example 3
(1).将市售二氧化钛与四异丙基二(亚磷酸二辛酯)钛酸酯按重量比为98∶2预混合，在100～110℃干法改性，得到高分散性二氧化钛粉体。(1). Pre-mix commercially available titanium dioxide and tetraisopropyl bis(dioctyl phosphite) titanate in a weight ratio of 98:2, and dry-modify at 100-110°C to obtain highly dispersible titanium dioxide powder body.
(2).将步骤(1)的高分散性二氧化钛粉体与E-12(604)环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂按重量比为23∶34.5∶39.5∶4配料，并充分预混合，在120～130℃的条件下熔融挤出，得到挤出产物。(2). The highly dispersible titanium dioxide powder of step (1) and E-12 (604) epoxy resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agent are 23: 34.5: 39.5: 4 by weight The ingredients are mixed and fully pre-mixed, and melted and extruded under the condition of 120-130° C. to obtain an extruded product.
(3).将挤出产物粉磨，并在200目筛分分级后，制得具备薄涂层化的白色热固性环氧聚酯粉末涂料；其中涂料由二氧化钛、E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂组成。(3). Grind the extruded product, and after sieving and classifying at 200 mesh, a white thermosetting epoxy polyester powder coating with thin coating is obtained; wherein the coating is made of titanium dioxide, E-12 (604) ring Oxygen resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agent.
实施例4Example 4
(1).将市售二氧化钛与异丙基(焦磷酸二辛酯)钛酸酯按重量比为97.5∶2.5预混合，在100～110℃干法改性，得到高分散性二氧化钛粉体。(1). Commercially available titanium dioxide and isopropyl (dioctyl pyrophosphate) titanate are premixed at a weight ratio of 97.5:2.5, and modified in a dry method at 100-110° C. to obtain highly dispersible titanium dioxide powder.
(2).将步骤(1)的高分散性二氧化钛粉体与E-12(604)环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂按重量比为23∶34.5∶39.5∶4配料，并充分预混合，在120～130℃的条件下熔融挤出，得到挤出产物。(2). The highly dispersible titanium dioxide powder of step (1) and E-12 (604) epoxy resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agent are 23: 34.5: 39.5: 4 by weight The ingredients are mixed and fully pre-mixed, and melted and extruded under the condition of 120-130° C. to obtain an extruded product.
(3).将挤出产物粉磨，并在200目筛分分级后，制得具备薄涂层化的白色热固性环氧聚酯粉末涂料；其中涂料由二氧化钛、E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂组成。(3). Grind the extruded product, and after sieving and classifying at 200 mesh, a white thermosetting epoxy polyester powder coating with thin coating is obtained; wherein the coating is made of titanium dioxide, E-12 (604) ring Oxygen resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agent.
实施例5Example 5
(1).将市售二氧化钛和硫酸钡(重量比66∶34)与硬脂酸按重量比为98.5∶1.5预混合，在100～110℃干法改性，得到高分散性二氧化钛和硫酸钡的复合粉体。(1). Premix commercially available titanium dioxide and barium sulfate (weight ratio 66:34) with stearic acid at a weight ratio of 98.5:1.5, and dry-modify at 100-110°C to obtain highly dispersible titanium dioxide and barium sulfate composite powder.
(2).将步骤(1)的高分散性二氧化钛和硫酸钡复合粉体与E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂按重量比为30∶30∶34.5∶5.5配料，并充分预混合，在120～130℃的条件下熔融挤出，得到挤出产物。(2). The highly dispersible titanium dioxide and barium sulfate composite powder of step (1) and E-12 (604) type epoxy resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agents are 30 by weight: 30:34.5:5.5 ingredients, and fully pre-mixed, melt-extruded under the condition of 120-130°C to obtain extruded products.
(3).将挤出产物粉磨，并在200目筛分分级后，制得具备薄涂层化的白色热固性环氧聚酯粉末涂料；其中涂料由二氧化钛和硫酸钡的复合粉体、E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂组成。(3). Grind the extruded product, and after sieving and classifying at 200 meshes, a white thermosetting epoxy polyester powder coating with thin coating is obtained; wherein the coating is composed of composite powder of titanium dioxide and barium sulfate, E -12 (604) type epoxy resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agent.
实施例6Example 6
(1).将市售二氧化钛和硫酸钡(重量比66∶34)与氨基硅烷按重量比为98∶2预混合，在100～110℃干法改性，得到高分散性二氧化钛和硫酸钡复合粉体。(1). Premix commercially available titanium dioxide and barium sulfate (weight ratio 66:34) with aminosilane at a weight ratio of 98:2, and dry-modify at 100-110°C to obtain a highly dispersible composite of titanium dioxide and barium sulfate Powder.
(2).将高分散性二氧化钛和硫酸钡复合粉体与E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂按重量比为29∶31∶36∶4配料，并充分预混合，在120～130℃的条件下熔融挤出，得到挤出产物。(2). The weight ratio of highly dispersible titanium dioxide and barium sulfate composite powder to E-12 (604) epoxy resin, YZ9802 saturated polyester resin, and 503 acrylic resin leveling agent is 29:31:36:4 The ingredients are mixed and fully pre-mixed, and melted and extruded under the condition of 120-130° C. to obtain an extruded product.
(3).将挤出产物粉磨，并在200目筛分分级后，制得具备薄涂层化的白色热固性环氧聚酯粉末涂料；其中涂料由二氧化钛和硫酸钡的复合粉体、E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂组成。(3). Grind the extruded product, and after sieving and classifying at 200 meshes, a white thermosetting epoxy polyester powder coating with thin coating is obtained; wherein the coating is composed of composite powder of titanium dioxide and barium sulfate, E -12 (604) type epoxy resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agent.
实施例7Example 7
(1).将市售二氧化钛和硫酸钡(重量比66∶34)与四异丙基二(亚磷酸二辛酯)钛酸酯按重量比为97.5∶2.5预混合，在100～110℃干法改性，得到高分散性二氧化钛和硫酸钡的复合粉体。(1). Pre-mix commercially available titanium dioxide and barium sulfate (66:34 by weight) with tetraisopropylbis(dioctyl phosphite) titanate in a weight ratio of 97.5:2.5, and dry at 100-110°C Modification method to obtain a composite powder of highly dispersible titanium dioxide and barium sulfate.
(2).将高分散性二氧化钛和硫酸钡复合粉体与E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂按重量比为29∶30.5∶35∶5.5配料，并充分预混合，在120～130℃的条件下熔融挤出，得到挤出产物。(2). The weight ratio of highly dispersible titanium dioxide and barium sulfate composite powder to E-12 (604) epoxy resin, YZ9802 saturated polyester resin, and 503 acrylic resin leveling agent is 29:30.5:35:5.5 The ingredients are mixed and fully pre-mixed, and melted and extruded under the condition of 120-130° C. to obtain an extruded product.
(3).将挤出产物粉磨，并在200目筛分分级后，制得具备薄涂层化的白色热固性环氧聚酯粉末涂料；其中涂料由二氧化钛和硫酸钡的复合粉体、E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂组成。(3). Grind the extruded product, and after sieving and classifying at 200 meshes, a white thermosetting epoxy polyester powder coating with thin coating is obtained; wherein the coating is composed of composite powder of titanium dioxide and barium sulfate, E -12 (604) type epoxy resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agent.
实施例8Example 8
(1).将市售二氧化钛和硫酸钡(重量比66∶34)和异丙基(焦磷酸二辛酯)钛酸酯按重量比为98.5∶1.5预混合，在100～110℃干法改性，得到高分散性二氧化钛和硫酸钡的复合粉体。(1). Commercially available titanium dioxide and barium sulfate (weight ratio 66:34) and isopropyl (dioctyl pyrophosphate) titanate are pre-mixed at a weight ratio of 98.5:1.5, and dry-processed at 100-110°C properties, to obtain a composite powder of highly dispersible titanium dioxide and barium sulfate.
(2).将高分散性二氧化钛和硫酸钡复合粉体与E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂按重量比为29∶30.5∶35∶5.5配料，并充分预混合，在120～130℃的条件下熔融挤出，得到挤出产物。(2). The weight ratio of highly dispersible titanium dioxide and barium sulfate composite powder to E-12 (604) epoxy resin, YZ9802 saturated polyester resin, and 503 acrylic resin leveling agent is 29:30.5:35:5.5 The ingredients are mixed and fully pre-mixed, and melted and extruded under the condition of 120-130° C. to obtain an extruded product.
(3).将挤出产物粉磨、200目筛分分级后，制得具备薄涂层化的白色热固性环氧聚酯粉末涂料；其中涂料由二氧化钛和硫酸钡的复合粉体、E-12(604)型环氧树脂、YZ9802饱和聚酯树脂、503丙烯酸树脂流平剂组成。(3). After grinding the extruded product and sieving and grading it with 200 meshes, a thin-coated white thermosetting epoxy polyester powder coating is obtained; the coating is composed of composite powder of titanium dioxide and barium sulfate, E-12 (604) type epoxy resin, YZ9802 saturated polyester resin, 503 acrylic resin leveling agent.
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| ITMI20051303A1 (en) * | 2005-07-08 | 2007-01-09 | Inxel S R L | METHOD FOR THE PRODUCTION OF THERMO-HARDENING POWDER COATINGS PARTICULARLY FOR THE APPLICATION BY ELECTROSTATIC SYSTEMS |
| CN102712465B (en) * | 2009-11-20 | 2014-07-16 | 3M创新有限公司 | Inorganic pigment composition comprising surface-modified nanoparticles and method for preparing the same |
| CN101805556A (en) * | 2010-04-12 | 2010-08-18 | 安徽华辉塑业科技有限公司 | Thermosetting powder coating with high tenacity |
| CN103289523A (en) * | 2013-04-23 | 2013-09-11 | 安徽圣德建材科技有限公司 | Salt-spray- resistant powder paint and preparation method thereof |
| CN106883730A (en) * | 2017-03-20 | 2017-06-23 | 广州卓凡实验室设备科技有限公司 | Epoxy/polyester type powdery paints and preparation method thereof |
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