WO2021212407A1 - Super-leveling acid rain-resistant powder coating for aluminum profile - Google Patents

Super-leveling acid rain-resistant powder coating for aluminum profile Download PDF

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WO2021212407A1
WO2021212407A1 PCT/CN2020/086393 CN2020086393W WO2021212407A1 WO 2021212407 A1 WO2021212407 A1 WO 2021212407A1 CN 2020086393 W CN2020086393 W CN 2020086393W WO 2021212407 A1 WO2021212407 A1 WO 2021212407A1
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leveling
super
powder coating
acid rain
resistant powder
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PCT/CN2020/086393
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French (fr)
Chinese (zh)
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孙华强
杨立新
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浙江华彩新材料有限公司
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Priority to PCT/CN2020/086393 priority Critical patent/WO2021212407A1/en
Publication of WO2021212407A1 publication Critical patent/WO2021212407A1/en

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING 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
    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/03—Powdery paints

Definitions

  • the invention relates to the technical field of powder coatings, in particular to a super-leveling acid rain resistant powder coating for aluminum profiles.
  • Powder coating is a 100% solid powder that does not contain organic solvents. It is different from oil-based coatings and water-based coatings. It does not use solvent or water as the dispersion medium when painting, but uses air as the dispersion medium to uniformly coat the workpiece. The surface is heated to form a new type of environmentally friendly paint with a special-purpose coating film. Powder coating has the characteristics of no VOC, environmental protection, energy saving, high construction efficiency and wide application range.
  • the present invention proposes a super-leveling acid rain resistant powder coating for aluminum profiles.
  • a super-leveling acid rain resistant powder coating for aluminum profiles which is composed of the following components by weight percentage: 50-60% carboxyl polyester resin, 3.5-5.5% TGIC curing agent, 2.5-4.0% leveling agent, and weathering aid 0.2 -0.5%, benzoin 0.3-0.8% and the balance of pigments and fillers.
  • the glass transition temperature of the carboxyl polyester resin is 60-65°C
  • the softening point is 90-105°C
  • the viscosity is 20.0-45.0Pa. s.
  • the weathering aid is the gum in petroleum asphalt.
  • the gum in the petroleum asphalt is a viscous substance with a molecular weight of 600-1000 and a density of 1.0-1.1 g/cm 3.
  • the pigment filler is one or a mixture of anatase titanium dioxide, barium sulfate, wollastonite, and mica powder.
  • the leveling agent is a petroleum pitch-based activated graphene sheet.
  • the petroleum pitch-based activated graphene sheet is a petroleum pitch-based activated graphene sheet prepared with petroleum pitch and additives (aluminum powder or alumina) as raw materials.
  • the carboxyl polyester resin, TGIC curing agent, leveling agent, benzoin and pigments and fillers are mixed uniformly, and finally the weathering additives are added and stirred. Use after evening.
  • the super-leveling acid rain resistant powder coating for aluminum profiles of the present invention is composed of the following components in weight percentage: carboxyl polyester resin 50-60%, TGIC curing agent 3.5-5.5%, leveling agent 2.5-4.0%, benzoin 0.3-0.8% and the balance of pigments and fillers.
  • the leveling agent is a petroleum pitch-based activated graphene sheet prepared with petroleum pitch and additives (aluminum powder or alumina) as raw materials.
  • the use of petroleum pitch-based activated graphene flakes as a leveling agent has the following beneficial effects: one is that the graphene flakes are doped with a small amount of elemental aluminum, which is conducive to a closer combination with aluminum profiles, thereby improving the weather resistance of the coating; Asphalt-based activated graphene sheets are used in conjunction with the gums in petroleum asphalt, which not only has very good acid resistance, but also has a very good leveling effect, which can reach PCI level 8 level.
  • a super-leveling acid rain resistant powder coating for aluminum profiles which is composed of the following components by weight percentage: carboxyl polyester resin 58%, TGIC curing agent 4.8%, leveling agent 3.5%, weathering aid 0.3%, benzoin 0.6% and Anatase titanium dioxide balance.
  • the glass transition temperature of the carboxyl polyester resin is 60-65°C, the softening point is 90-105°C, and the viscosity is 20.0-45.0Pa. s.
  • the weathering aid is the gum in petroleum asphalt; the gum in the petroleum asphalt is a viscous substance with a molecular weight of 600-1000 and a density of 1.0-1.1 g/cm 3.
  • the said leveling agent is a petroleum pitch-based activated graphene sheet.
  • the preparation method of the petroleum pitch-based activated graphene sheet includes the following steps: weigh petroleum pitch and aluminum powder at a mass ratio of 100:100 (mass ratio), fully mix them through a 300-mesh sieve, and put them into a sintering furnace ( The vacuum degree is 1.0 ⁇ 10 -1 Pa), the temperature is raised to 1300°C at 10°C/min, and the temperature is kept for 5 hours, and the carbonized product is taken out after cooling to room temperature.
  • the carbonized product and potassium hydroxide were mixed in a mass ratio of 1:3 and then put into a ball mill for reaction and ball milling for 2.5 hours (the ball milling speed was 300 rpm).
  • the prepared activated graphene sheet has the following properties: the thickness of the graphene sheet is 1-3 nm, the specific surface area is 2530 m 2 /g, and the mesopore content is 60%.
  • a super-leveling acid rain resistant powder coating for aluminum profiles which is composed of the following components by weight percentage: 60% carboxyl polyester resin, 5.5% TGIC curing agent, 2.5% leveling agent, 0.5% weathering aid, 0.3% benzoin and The remaining amount of pigments and fillers.
  • the glass transition temperature of the carboxyl polyester resin is 60-65°C, the softening point is 90-105°C, and the viscosity is 20.0-45.0Pa. s.
  • the weathering aid is the gum in petroleum asphalt; the gum in the petroleum asphalt is a viscous substance with a molecular weight of 600-1000 and a density of 1.0-1.1 g/cm 3.
  • the pigment filler is a mixture of anatase titanium dioxide and barium sulfate in a mass ratio of 2:1.
  • the said leveling agent is a petroleum pitch-based activated graphene sheet.
  • the preparation method of the petroleum pitch-based activated graphene sheet includes the following steps: weigh the petroleum pitch and aluminum powder at a mass ratio of 100:85 (mass ratio), fully mix them through a 300 mesh sieve, and put them into a sintering furnace ( The vacuum degree is 1.0 ⁇ 10 -1 Pa), the temperature is raised to 1350°C at 12°C/min, and the temperature is kept for 4.5 hours, and the carbonized product is taken out after cooling to room temperature.
  • the carbonized product and potassium hydroxide were mixed in a mass ratio of 1:3 and then put into a ball mill for reaction and ball milling for 2.5 hours (ball milling speed 350 rpm).
  • the prepared activated graphene sheet has the following properties: the thickness of the graphene sheet is 1-3 nm, the specific surface area is 2480 m 2 /g, and the mesopore content is 57%.
  • a super-leveling acid rain-resistant powder coating for aluminum profiles which is composed of the following components by weight percentage: carboxyl polyester resin 50%, TGIC curing agent 3.5%, leveling agent 4.0%, weathering aid 0.2%, benzoin 0.8% and The remaining amount of pigments and fillers.
  • the glass transition temperature of the carboxyl polyester resin is 60-65°C, the softening point is 90-105°C, and the viscosity is 20.0-45.0Pa. s.
  • the weathering aid is the gum in petroleum asphalt; the gum in the petroleum asphalt is a viscous substance with a molecular weight of 600-1000 and a density of 1.0-1.1 g/cm 3.
  • the pigment filler is a mixture of anatase titanium dioxide, wollastonite, and mica powder in a mass ratio of 1:2:4.
  • the said leveling agent is a petroleum pitch-based activated graphene sheet.
  • the preparation method of the petroleum pitch-based activated graphene sheet includes the following steps: weigh petroleum pitch and alumina powder at a mass ratio of 100:60 (mass ratio), thoroughly mix through a 300-mesh sieve, and put into a sintering furnace (Vacuum degree 1.0 ⁇ 10 1 Pa), raise the temperature to 1800°C at 8°C/min and keep it for 2h, then cool to room temperature to take out the carbonized product.
  • the carbonized product and potassium hydroxide were mixed in a mass ratio of 1:3, and then put into a ball mill for reaction and ball milling for 3 hours (the ball milling speed was 300 rpm).
  • the prepared activated graphene sheet has the following properties: the thickness of the graphene sheet is 2-5 nm, the specific surface area is 2170 m 2 /g, and the mesopore content is 42%.
  • Example 1 The petroleum pitch-based activated graphene sheet in Example 1 was replaced with a conventional graphene nanosheet, and the remaining ratio and preparation method were unchanged.
  • Example 1 The colloid in the weathering aid petroleum pitch in Example 1 is replaced with rutile titanium dioxide; the other proportions and preparation methods remain unchanged.
  • Example 1-3 The powder coatings of Example 1-3 and Comparative Example 1-2 were applied to outdoor aluminum profiles, and the performance comparison test results;

Abstract

Disclosed is a super-leveling acid rain-resistant powder coating for an aluminum profile, which is composed of the following components in percentages by weight: 50-60% of a carboxyl polyester resin, 3.5-5.5% of a TGIC curing agent, 2.5-4.0% of a leveling agent, 0.3-0.8% of benzoinum, and the balance being a pigment and a filler, wherein the leveling agent is a petroleum asphalt-based activated graphene sheet prepared from a petroleum asphalt and an additive (an aluminum powder or alumina) as raw materials. The use of the petroleum asphalt-based activated graphene sheet as a leveling agent has the following beneficial effects: the first is that the graphene sheet is doped with a small amount of the element aluminum, which is conducive to tighter combination with an aluminum profile, thereby improving the weather resistance of the coating; and the second is that the petroleum asphalt-based activated graphene sheet is used in combination with the colloid in a petroleum asphalt, such that the coating not only has a very good acid resistance, but also has a very good leveling effect, i.e. a PCI leveling level of 8 can be reached.

Description

一种铝型材用超流平耐酸雨粉末涂料Super-leveling acid rain resistant powder coating for aluminum profile 技术领域Technical field
本发明涉及粉末涂料技术领域，尤其涉及一种铝型材用超流平耐酸雨粉末涂料。The invention relates to the technical field of powder coatings, in particular to a super-leveling acid rain resistant powder coating for aluminum profiles.
背景技术Background technique
粉末涂料是一种不含有机溶剂的100％固体粉末，它与油性涂料和水性涂料不同，涂装时不以溶剂或水作为分散介质，而是以空气作为分散介质，均匀地涂覆在工件表面，经加热后形成一层具有特殊用途的涂膜的一种新型环保涂料。粉末涂料具有无VOC、环保、节能、施工效率高与应用范围宽等特点。Powder coating is a 100% solid powder that does not contain organic solvents. It is different from oil-based coatings and water-based coatings. It does not use solvent or water as the dispersion medium when painting, but uses air as the dispersion medium to uniformly coat the workpiece. The surface is heated to form a new type of environmentally friendly paint with a special-purpose coating film. Powder coating has the characteristics of no VOC, environmental protection, energy saving, high construction efficiency and wide application range.
但是传统的粉末涂料具有表面流平性能较差的特点，即使是进口的流平剂，应用于铝型材同样流平效果不够理想，而且成本也非常高；而由于环境污染，普通的耐候涂料已经无法满足户外酸雨的侵蚀，故有必要研究一种铝型材用超流平耐酸雨粉末涂料。However, traditional powder coatings have the characteristics of poor surface leveling performance. Even the imported leveling agents are not ideal for leveling when applied to aluminum profiles, and the cost is very high; and due to environmental pollution, ordinary weather-resistant coatings have been Can not meet the corrosion of outdoor acid rain, so it is necessary to study a super-leveling acid rain resistant powder coating for aluminum profiles.
发明内容Summary of the invention
基于背景技术存在的技术问题，本发明提出了一种铝型材用超流平耐酸雨粉末涂料。Based on the technical problems existing in the background art, the present invention proposes a super-leveling acid rain resistant powder coating for aluminum profiles.
本发明的技术方案如下：The technical scheme of the present invention is as follows:
一种铝型材用超流平耐酸雨粉末涂料，由以下重量百分比的成分组成：羧基聚酯树脂50-60％、TGIC固化剂3.5-5.5％、流平剂2.5-4.0％、耐候助剂0.2-0.5％、安息香0.3-0.8％和颜填料余量。A super-leveling acid rain resistant powder coating for aluminum profiles, which is composed of the following components by weight percentage: 50-60% carboxyl polyester resin, 3.5-5.5% TGIC curing agent, 2.5-4.0% leveling agent, and weathering aid 0.2 -0.5%, benzoin 0.3-0.8% and the balance of pigments and fillers.
优选的，所述的羧基聚酯树脂玻璃化温度为60-65℃，软化点为90-105℃，粘度为20.0-45.0Pa﹒s。Preferably, the glass transition temperature of the carboxyl polyester resin is 60-65°C, the softening point is 90-105°C, and the viscosity is 20.0-45.0Pa. s.
优选的，所述的耐候助剂为石油沥青中的胶质。Preferably, the weathering aid is the gum in petroleum asphalt.
进一步优选的，所述的石油沥青中的胶质为分子量600-1000，密度为1.0-1.1g/cm 3的粘稠状物质。 Further preferably, the gum in the petroleum asphalt is a viscous substance with a molecular weight of 600-1000 and a density of 1.0-1.1 g/cm 3.
优选的，所述颜填料为锐钛型钛白粉、硫酸钡、硅灰石、云母粉中的一种或几种的混合物。Preferably, the pigment filler is one or a mixture of anatase titanium dioxide, barium sulfate, wollastonite, and mica powder.
优选的，所述的流平剂为石油沥青基活化石墨烯片。Preferably, the leveling agent is a petroleum pitch-based activated graphene sheet.
进一步优选的，所述的石油沥青基活化石墨烯片为以石油沥青和添加剂(铝粉或氧化铝)为原料制备的石油沥青基活化石墨烯片。Further preferably, the petroleum pitch-based activated graphene sheet is a petroleum pitch-based activated graphene sheet prepared with petroleum pitch and additives (aluminum powder or alumina) as raw materials.
优选的，所述的铝型材用超流平耐酸雨粉末涂料在使用时，先将羧基聚酯树脂、TGIC固化剂、流平剂、安息香和颜填料搅拌均匀后，最后加入耐候助剂，搅拌均匀后使用。Preferably, when the said super-leveling acid rain resistant powder coating for aluminum profiles is used, the carboxyl polyester resin, TGIC curing agent, leveling agent, benzoin and pigments and fillers are mixed uniformly, and finally the weathering additives are added and stirred. Use after evening.
本发明的有益之处在于：本发明的铝型材用超流平耐酸雨粉末涂料，由以下重量百分比的成分组成：羧基聚酯树脂50-60％、TGIC固化剂3.5-5.5％、流平剂2.5-4.0％、安息香0.3-0.8％和颜填料余量。其中，流平剂为以石油沥青和添加剂(铝粉或氧化铝)为原料制备的石油沥青基活化石墨烯片。采用石油沥青基活化石墨烯片作为流平剂具有以下有益效果：一是石墨烯片上掺杂有少量的元素铝，有利于与铝型材结合的更加紧密，从而提升涂料的耐候性；二是石油沥青基活化石墨烯片与石油沥青中的胶质配合使用，不但具有非常好的耐酸性能，而且流平效果非常好，可以达到PCI流平等级8级。The advantages of the present invention are: the super-leveling acid rain resistant powder coating for aluminum profiles of the present invention is composed of the following components in weight percentage: carboxyl polyester resin 50-60%, TGIC curing agent 3.5-5.5%, leveling agent 2.5-4.0%, benzoin 0.3-0.8% and the balance of pigments and fillers. Among them, the leveling agent is a petroleum pitch-based activated graphene sheet prepared with petroleum pitch and additives (aluminum powder or alumina) as raw materials. The use of petroleum pitch-based activated graphene flakes as a leveling agent has the following beneficial effects: one is that the graphene flakes are doped with a small amount of elemental aluminum, which is conducive to a closer combination with aluminum profiles, thereby improving the weather resistance of the coating; Asphalt-based activated graphene sheets are used in conjunction with the gums in petroleum asphalt, which not only has very good acid resistance, but also has a very good leveling effect, which can reach PCI level 8 level.
具体实施方式Detailed ways
实施例1Example 1
一种铝型材用超流平耐酸雨粉末涂料，由以下重量百分比的成分组成：羧基聚酯树脂58％、TGIC固化剂4.8％、流平剂3.5％、耐候助剂0.3％、安息香0.6％和锐钛型钛白粉余量。A super-leveling acid rain resistant powder coating for aluminum profiles, which is composed of the following components by weight percentage: carboxyl polyester resin 58%, TGIC curing agent 4.8%, leveling agent 3.5%, weathering aid 0.3%, benzoin 0.6% and Anatase titanium dioxide balance.
所述的羧基聚酯树脂玻璃化温度为60-65℃，软化点为90-105℃，粘度为20.0-45.0Pa﹒s。The glass transition temperature of the carboxyl polyester resin is 60-65°C, the softening point is 90-105°C, and the viscosity is 20.0-45.0Pa. s.
所述的耐候助剂为石油沥青中的胶质；所述的石油沥青中的胶质为分子量600-1000，密度为1.0-1.1g/cm 3的粘稠状物质。 The weathering aid is the gum in petroleum asphalt; the gum in the petroleum asphalt is a viscous substance with a molecular weight of 600-1000 and a density of 1.0-1.1 g/cm 3.
所述的流平剂为石油沥青基活化石墨烯片。The said leveling agent is a petroleum pitch-based activated graphene sheet.
所述的石油沥青基活化石墨烯片的制备方法，包括以下步骤：将石油沥青和铝粉按质量比100:100(质量比)称取，充分混合过300目筛后放入烧结炉中(真空度1.0×10 -1Pa)，以10℃/min升温至1300℃后保温5h，冷却至室温取出炭化产物。将炭化产物与氢氧化钾按质量比1:3混合后放入球磨机中反应球磨2.5h(球磨转速300rpm)。将球磨产物放入刚玉坩埚中，然后置于气氛炉中，并通入氩气，氩气流量为150mL/min，以10℃/min升温至800℃后保持5h，随炉冷却至室温取出。将活化产物置于pH值4的盐酸中(活化产物与盐酸的质量比1:5)，于60℃搅拌2h(搅拌速度200rpm)，经过滤分离后用去离子水充分洗涤至滤液pH值为中性，然后置于120℃烘箱中进行干燥10h，即获得活化石墨烯片。所制备的活化石墨烯片具有如下性能：石墨烯片厚度1-3nm、比表面积2530m 2/g、中孔含量 60％。 The preparation method of the petroleum pitch-based activated graphene sheet includes the following steps: weigh petroleum pitch and aluminum powder at a mass ratio of 100:100 (mass ratio), fully mix them through a 300-mesh sieve, and put them into a sintering furnace ( The vacuum degree is 1.0×10 -1 Pa), the temperature is raised to 1300°C at 10°C/min, and the temperature is kept for 5 hours, and the carbonized product is taken out after cooling to room temperature. The carbonized product and potassium hydroxide were mixed in a mass ratio of 1:3 and then put into a ball mill for reaction and ball milling for 2.5 hours (the ball milling speed was 300 rpm). Put the ball milled product into a corundum crucible, and then place it in an atmosphere furnace, and pass argon gas with a flow rate of 150 mL/min. The argon gas flow rate is 150 mL/min. The temperature is raised to 800 ℃ at 10 ℃/min and then kept for 5 hours. The furnace is cooled to room temperature and taken out. Place the activated product in hydrochloric acid with pH 4 (the mass ratio of activated product to hydrochloric acid is 1:5), stir at 60°C for 2h (stirring speed 200rpm), after filtration, wash thoroughly with deionized water to the filtrate pH value It is neutral, and then placed in an oven at 120°C for drying for 10 hours to obtain activated graphene sheets. The prepared activated graphene sheet has the following properties: the thickness of the graphene sheet is 1-3 nm, the specific surface area is 2530 m 2 /g, and the mesopore content is 60%.
实施例2Example 2
一种铝型材用超流平耐酸雨粉末涂料，由以下重量百分比的成分组成：羧基聚酯树脂60％、TGIC固化剂5.5％、流平剂2.5％、耐候助剂0.5％、安息香0.3％和颜填料余量。A super-leveling acid rain resistant powder coating for aluminum profiles, which is composed of the following components by weight percentage: 60% carboxyl polyester resin, 5.5% TGIC curing agent, 2.5% leveling agent, 0.5% weathering aid, 0.3% benzoin and The remaining amount of pigments and fillers.
所述的羧基聚酯树脂玻璃化温度为60-65℃，软化点为90-105℃，粘度为20.0-45.0Pa﹒s。The glass transition temperature of the carboxyl polyester resin is 60-65°C, the softening point is 90-105°C, and the viscosity is 20.0-45.0Pa. s.
所述的耐候助剂为石油沥青中的胶质；所述的石油沥青中的胶质为分子量600-1000，密度为1.0-1.1g/cm 3的粘稠状物质。 The weathering aid is the gum in petroleum asphalt; the gum in the petroleum asphalt is a viscous substance with a molecular weight of 600-1000 and a density of 1.0-1.1 g/cm 3.
所述颜填料为锐钛型钛白粉和硫酸钡质量比为2:1的混合物。The pigment filler is a mixture of anatase titanium dioxide and barium sulfate in a mass ratio of 2:1.
所述的流平剂为石油沥青基活化石墨烯片。The said leveling agent is a petroleum pitch-based activated graphene sheet.
所述的石油沥青基活化石墨烯片的制备方法，包括以下步骤：将石油沥青和铝粉按质量比100:85(质量比)称取，充分混合过300目筛后放入烧结炉中(真空度1.0×10 -1Pa)，以12℃/min升温至1350℃后保温4.5h，冷却至室温取出炭化产物。将炭化产物与氢氧化钾按质量比1:3混合后放入球磨机中反应球磨2.5h(球磨转速350rpm)。将球磨产物放入刚玉坩埚中，然后置于气氛炉中，并通入氩气，氩气流量为150mL/min，以12℃/min升温至820℃后保持5h，随炉冷却至室温取出。将活化产物置于pH值4的盐酸中(活化产物与盐酸的质量比1:4)，于65℃搅拌2.5h(搅拌速度250rpm)，经过滤分离后用去离子水充分洗涤至滤液pH值为中性，然后置于105℃烘箱中进行干燥12h，即获得活化石墨烯片。所制备的活化石墨烯 片具有如下性能：石墨烯片厚度1-3nm、比表面积2480m 2/g、中孔含量57％。 The preparation method of the petroleum pitch-based activated graphene sheet includes the following steps: weigh the petroleum pitch and aluminum powder at a mass ratio of 100:85 (mass ratio), fully mix them through a 300 mesh sieve, and put them into a sintering furnace ( The vacuum degree is 1.0×10 -1 Pa), the temperature is raised to 1350°C at 12°C/min, and the temperature is kept for 4.5 hours, and the carbonized product is taken out after cooling to room temperature. The carbonized product and potassium hydroxide were mixed in a mass ratio of 1:3 and then put into a ball mill for reaction and ball milling for 2.5 hours (ball milling speed 350 rpm). Put the ball-milled product into a corundum crucible, then place it in an atmosphere furnace, and pass argon with a flow rate of 150mL/min. The temperature is raised to 820°C at 12°C/min, then kept for 5h, and the furnace is cooled to room temperature and taken out. Place the activated product in hydrochloric acid with a pH of 4 (the mass ratio of activated product to hydrochloric acid is 1:4), stir at 65°C for 2.5h (stirring speed 250rpm), after filtration and separation, wash thoroughly with deionized water to the filtrate pH value It is neutral, and then placed in an oven at 105°C for drying for 12 hours to obtain activated graphene sheets. The prepared activated graphene sheet has the following properties: the thickness of the graphene sheet is 1-3 nm, the specific surface area is 2480 m 2 /g, and the mesopore content is 57%.
实施例3Example 3
一种铝型材用超流平耐酸雨粉末涂料，由以下重量百分比的成分组成：羧基聚酯树脂50％、TGIC固化剂3.5％、流平剂4.0％、耐候助剂0.2％、安息香0.8％和颜填料余量。A super-leveling acid rain-resistant powder coating for aluminum profiles, which is composed of the following components by weight percentage: carboxyl polyester resin 50%, TGIC curing agent 3.5%, leveling agent 4.0%, weathering aid 0.2%, benzoin 0.8% and The remaining amount of pigments and fillers.
所述的羧基聚酯树脂玻璃化温度为60-65℃，软化点为90-105℃，粘度为20.0-45.0Pa﹒s。The glass transition temperature of the carboxyl polyester resin is 60-65°C, the softening point is 90-105°C, and the viscosity is 20.0-45.0Pa. s.
所述的耐候助剂为石油沥青中的胶质；所述的石油沥青中的胶质为分子量600-1000，密度为1.0-1.1g/cm 3的粘稠状物质。 The weathering aid is the gum in petroleum asphalt; the gum in the petroleum asphalt is a viscous substance with a molecular weight of 600-1000 and a density of 1.0-1.1 g/cm 3.
所述颜填料为锐钛型钛白粉、硅灰石、云母粉质量比为1:2:4的混合物。The pigment filler is a mixture of anatase titanium dioxide, wollastonite, and mica powder in a mass ratio of 1:2:4.
所述的流平剂为石油沥青基活化石墨烯片。The said leveling agent is a petroleum pitch-based activated graphene sheet.
所述的石油沥青基活化石墨烯片的制备方法，包括以下步骤：将石油沥青和氧化铝粉按质量比100:60(质量比)称取，充分混合过300目筛后放入烧结炉中(真空度1.0×10 1Pa)，以8℃/min升温至1800℃后保温2h，冷却至室温取出炭化产物。将炭化产物与氢氧化钾按质量比1:3混合后放入球磨机中反应球磨3h(球磨转速300rpm)。将球磨产物放入刚玉坩埚中，然后置于气氛炉中，并通入氩气，氩气流量为150mL/min，以5℃/min升温至850℃后保持1.5h，随炉冷却至室温取出。将活化产物置于pH值4的盐酸中(活化产物与盐酸的质量比1:5)，于60℃搅拌2h(搅拌速度200rpm)，经过滤 分离后用去离子水充分洗涤至滤液pH值为中性，然后置于120℃烘箱中进行干燥10h，即获得活化石墨烯片。所制备的活化石墨烯片具有如下性能：石墨烯片厚度2-5nm、比表面积2170m 2/g、中孔含量42％。 The preparation method of the petroleum pitch-based activated graphene sheet includes the following steps: weigh petroleum pitch and alumina powder at a mass ratio of 100:60 (mass ratio), thoroughly mix through a 300-mesh sieve, and put into a sintering furnace (Vacuum degree 1.0×10 1 Pa), raise the temperature to 1800°C at 8°C/min and keep it for 2h, then cool to room temperature to take out the carbonized product. The carbonized product and potassium hydroxide were mixed in a mass ratio of 1:3, and then put into a ball mill for reaction and ball milling for 3 hours (the ball milling speed was 300 rpm). Put the ball milled product into a corundum crucible, then put it in an atmosphere furnace, and pass argon gas with a flow rate of 150mL/min. The temperature is raised to 850℃ at 5℃/min, then kept for 1.5h, and the furnace is cooled to room temperature. . Place the activated product in hydrochloric acid with pH 4 (the mass ratio of activated product to hydrochloric acid is 1:5), stir at 60°C for 2h (stirring speed 200rpm), after filtration, wash thoroughly with deionized water to the filtrate pH value It is neutral, and then placed in an oven at 120°C for drying for 10 hours to obtain activated graphene sheets. The prepared activated graphene sheet has the following properties: the thickness of the graphene sheet is 2-5 nm, the specific surface area is 2170 m 2 /g, and the mesopore content is 42%.
对比例1Comparative example 1
将实施例1中的石油沥青基活化石墨烯片替换为常规的石墨烯纳米片，其余配比和制备方法不变。The petroleum pitch-based activated graphene sheet in Example 1 was replaced with a conventional graphene nanosheet, and the remaining ratio and preparation method were unchanged.
对比例2Comparative example 2
将实施例1中的耐候助剂石油沥青中的胶质替换为金红石型钛白粉；，其余配比和制备方法不变。The colloid in the weathering aid petroleum pitch in Example 1 is replaced with rutile titanium dioxide; the other proportions and preparation methods remain unchanged.
将实施例1-3和对比例1-2的粉末涂料应用于户外铝型材，经测试，其固化条件及其涂膜所具有的性能参数如表1所示。The powder coatings of Examples 1-3 and Comparative Examples 1-2 were applied to outdoor aluminum profiles. After testing, the curing conditions and the performance parameters of the coating film are shown in Table 1.
表1：实施例1-3和对比例1-2的粉末涂料应用于户外铝型材，性能对比测试结果；Table 1: The powder coatings of Example 1-3 and Comparative Example 1-2 were applied to outdoor aluminum profiles, and the performance comparison test results;
Figure PCTCN2020086393-appb-000001
Figure PCTCN2020086393-appb-000001
Figure PCTCN2020086393-appb-000002
Figure PCTCN2020086393-appb-000002
由以上测试结果可以知道，本发明的铝型材用超流平耐酸雨粉末涂料具有非常好的流平性和耐酸性能。It can be known from the above test results that the super-leveling acid rain-resistant powder coating for aluminum profiles of the present invention has very good leveling properties and acid resistance.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Anyone familiar with the technical field within the technical scope disclosed by the present invention, according to the technical solution of the present invention Equivalent replacements or changes to its inventive concept should all fall within the protection scope of the present invention.

Claims (8)

  1. 一种铝型材用超流平耐酸雨粉末涂料，其特征在于，由以下重量百分比的成分组成：羧基聚酯树脂50-60％、TGIC固化剂3.5-5.5％、流平剂2.5-4.0％、耐候助剂0.2-0.5％、安息香0.3-0.8％和颜填料余量。A super-leveling acid rain resistant powder coating for aluminum profiles, which is characterized in that it is composed of the following weight percentages: carboxyl polyester resin 50-60%, TGIC curing agent 3.5-5.5%, leveling agent 2.5-4.0%, Weather resistance additives 0.2-0.5%, benzoin 0.3-0.8% and the balance of pigments and fillers.
  2. 如权利要求1所述的铝型材用超流平耐酸雨粉末涂料，其特征在于，所述的羧基聚酯树脂玻璃化温度为60-65℃，软化点为90-105℃，粘度为20.0-45.0Pa﹒s。The super-leveling acid rain resistant powder coating for aluminum profiles according to claim 1, wherein the glass transition temperature of the carboxyl polyester resin is 60-65°C, the softening point is 90-105°C, and the viscosity is 20.0- 45.0Pa﹒ s.
  3. 如权利要求1所述的铝型材用超流平耐酸雨粉末涂料，其特征在于，所述的耐候助剂为石油沥青中的胶质。The super-leveling acid rain resistant powder coating for aluminum profiles according to claim 1, wherein the weather resistant auxiliary agent is a colloid in petroleum asphalt.
  4. 如权利要求3所述的铝型材用超流平耐酸雨粉末涂料，其特征在于，所述的石油沥青中的胶质为分子量600-1000，密度为1.0-1.1g/cm 3的粘稠状物质。 The super-leveling acid rain resistant powder coating for aluminum profiles according to claim 3, wherein the gum in the petroleum asphalt is a viscous shape with a molecular weight of 600-1000 and a density of 1.0-1.1g/cm 3 substance.
  5. 如权利要求1所述的铝型材用超流平耐酸雨粉末涂料，其特征在于，所述颜填料为锐钛型钛白粉、硫酸钡、硅灰石、云母粉中的一种或几种的混合物。The super-leveling acid rain resistant powder coating for aluminum profiles according to claim 1, wherein the pigment filler is one or more of anatase titanium dioxide, barium sulfate, wollastonite, and mica powder mixture.
  6. 如权利要求1所述的铝型材用超流平耐酸雨粉末涂料，其特征在于，所述的流平剂为石油沥青基活化石墨烯片。The super-leveling acid rain-resistant powder coating for aluminum profiles according to claim 1, wherein the leveling agent is a petroleum pitch-based activated graphene sheet.
  7. 如权利要求6所述的铝型材用超流平耐酸雨粉末涂料，其特征在于，所述的石油沥青基活化石墨烯片为以石油沥青和铝粉或氧化铝为原料制备的石油沥青基活化石墨烯片。The super-leveling acid rain resistant powder coating for aluminum profiles according to claim 6, wherein the petroleum pitch-based activated graphene sheet is a petroleum pitch-based activated fossil prepared from petroleum pitch and aluminum powder or alumina as raw materials Ink vinyl film.
  8. 如权利要求1-7任一所述的铝型材用超流平耐酸雨粉末涂料，其特征在于，在使用时，先将羧基聚酯树脂、TGIC固化剂、流平剂、安 息香和颜填料搅拌均匀后，最后加入耐候助剂，搅拌均匀后使用。The super-leveling acid rain resistant powder coating for aluminum profiles according to any one of claims 1-7, characterized in that, when in use, the carboxyl polyester resin, TGIC curing agent, leveling agent, benzoin and pigments are first stirred After uniformity, add weather resistance additives at last, stir well and use.
PCT/CN2020/086393 2020-04-23 2020-04-23 Super-leveling acid rain-resistant powder coating for aluminum profile WO2021212407A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006126680A1 (en) * 2005-05-26 2006-11-30 Mitsubishi Rayon Co., Ltd. Aqueous resin composition, weather resistance improver for aqueous coating material using same, weather resistance improver for thermoplastic resin, and weather resistance improver for solvent borne coating material
CN102516855A (en) * 2011-12-13 2012-06-27 广东华江粉末科技有限公司 Powdery paint for aluminum profile and preparation method thereof
CN105480971A (en) * 2016-01-29 2016-04-13 福州大学 Preparation method of asphalt-based three-dimensional mesoporous graphene material
CN107083161A (en) * 2017-05-19 2017-08-22 浙江华彩新材料有限公司 A kind of special outdoor super levelling powdery paints of weather resistant of aluminium section bar
CN108329806A (en) * 2018-02-12 2018-07-27 浙江华彩新材料有限公司 Anti-corrosive powder paint and preparation method with plating mirror effect and application

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006126680A1 (en) * 2005-05-26 2006-11-30 Mitsubishi Rayon Co., Ltd. Aqueous resin composition, weather resistance improver for aqueous coating material using same, weather resistance improver for thermoplastic resin, and weather resistance improver for solvent borne coating material
CN102516855A (en) * 2011-12-13 2012-06-27 广东华江粉末科技有限公司 Powdery paint for aluminum profile and preparation method thereof
CN105480971A (en) * 2016-01-29 2016-04-13 福州大学 Preparation method of asphalt-based three-dimensional mesoporous graphene material
CN107083161A (en) * 2017-05-19 2017-08-22 浙江华彩新材料有限公司 A kind of special outdoor super levelling powdery paints of weather resistant of aluminium section bar
CN108329806A (en) * 2018-02-12 2018-07-27 浙江华彩新材料有限公司 Anti-corrosive powder paint and preparation method with plating mirror effect and application

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