WO2018040696A1 - Magnesium alloy rubber coated product surface decoration method and molded product thereof - Google Patents

Magnesium alloy rubber coated product surface decoration method and molded product thereof Download PDF

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Publication number
WO2018040696A1
WO2018040696A1 PCT/CN2017/090281 CN2017090281W WO2018040696A1 WO 2018040696 A1 WO2018040696 A1 WO 2018040696A1 CN 2017090281 W CN2017090281 W CN 2017090281W WO 2018040696 A1 WO2018040696 A1 WO 2018040696A1
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Prior art keywords
magnesium alloy
surface decoration
decoration method
product
product according
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PCT/CN2017/090281
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French (fr)
Chinese (zh)
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李连成
陈其亮
于飞
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昆山汉鼎精密金属有限公司
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Publication of WO2018040696A1 publication Critical patent/WO2018040696A1/en

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/30—Anodisation of magnesium or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
    • B05D3/102—Pretreatment of metallic substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/024—Anodisation under pulsed or modulated current or potential
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2350/00—Pretreatment of the substrate
    • B05D2350/60—Adding a layer before coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2502/00—Acrylic polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2503/00—Polyurethanes

Definitions

  • the present application relates to a surface decoration method and a molded article thereof, such as a surface decoration method of a magnesium alloy rubberized product and a molded article thereof.
  • Magnesium alloy products have the advantages of fast heat dissipation, light weight, good rigidity, certain corrosion resistance and dimensional stability, impact resistance, wear resistance, good attenuation performance and easy recycling; in addition, high thermal conductivity, non-magnetic, electromagnetic shielding Good performance and non-toxic characteristics, used in portable electronic products and automotive industry to achieve lightweight. Good shielding properties make magnesium alloys more and more widely used in the 3C industry, but their application is limited due to their chemical nature, low electrode potential and high corrosion resistance.
  • the magnesium alloy products of this molding process are currently processed by a method of spraying 3-4 layers of paint to complete the bonding line between the magnesium alloy and the plastic product to meet the appearance requirements.
  • the multi-coat painting process not only has a long production cycle, but also consumes a lot of man-hours, and the consumption of paint is also large, which does not meet the environmental requirements of environmental protection and emission reduction.
  • the purpose of the present application is to provide a surface decoration method for magnesium alloy encapsulated products and molding thereof.
  • the number of coatings has been reduced from 3-4 layers to 1-2 layers, which greatly reduces the number of coatings, which is conducive to meeting environmental requirements and shortening the process.
  • an embodiment of the present invention provides a surface decoration method for a magnesium alloy rubberized product, which comprises the following steps:
  • the degreasing agent in the step (1) is M-121, the concentration of the degreasing agent is 20-80 g/l; the degreasing treatment temperature is 75-85 ° C, and the time is 240-300 seconds.
  • the micro-arc oxidation power supply device in the step (3) adopts a single-pulse manual/automatic output mode; mode selection: constant current mode, current density: 0.8-2.0 A/dm 2 , frequency: 300- 650Hz, duty cycle: 10-35%, oxidation cycle: 3-10 minutes.
  • the micro-arc oxidation electrolyte formulation in the step (3) is as follows: a main film-forming agent 5-30 g/l; a pH adjuster 5-30 g/l; a film-forming auxiliary agent 5-25 g/l; an additive; 3-30 g / l; the pH of the electrolyte is 9.0-13.0, and the reaction temperature is 20-40 °C.
  • the primary film former is one of a silicate, a phosphate, an aluminate, or a mixture thereof.
  • the pH adjusting agent is: sodium hydroxide or potassium hydroxide.
  • the film forming aid is: a fluorine-containing compound such as potassium fluoride or sodium fluoride.
  • the additive is a mixture of multiple components of an organic acid salt and a complexing agent.
  • the baking temperature in the step (5) is 50-95 ° C, and the baking time is 10-30 minutes.
  • the method further comprises the step (6) of painting the dried magnesium alloy encapsulated product.
  • the painting process in the step (6) adopts a quick-drying two-liquid polyurethane paint or Single-liquid polyacrylate paint.
  • the present application provides a surface decorative molded article of a magnesium alloy encapsulated product, which is a molded article produced according to the surface decoration method of the above magnesium alloy encapsulated product.
  • the surface decoration method and the molded article of the magnesium alloy encapsulating product of the embodiment of the invention combine the micro-arc oxidation technology with the spraying technology to electrically immerse the product into the configured chemical agent at a certain current.
  • the density a uniform film layer with good corrosion resistance and leveling is formed on the surface of the magnesium alloy, and the number of conventional coatings can be reduced from 3-4 layers to 1-2 layers during the coating process.
  • FIG. 1 is a flow chart showing a surface decoration method of a magnesium alloy rubberized product according to a first embodiment of the present invention.
  • FIG. 2 is a flow chart showing a surface decoration method of a magnesium alloy encapsulated product according to a second embodiment of the present invention.
  • FIG. 3 is a schematic view showing a molded article produced by a surface decoration method of a magnesium alloy encapsulated product according to an embodiment of the present invention.
  • Fig. 4 is a schematic view showing the molded article of Fig. 3 after being coated.
  • FIG. 1 is a flow chart showing a surface decoration method of a magnesium alloy encapsulated product according to a first embodiment of the present invention.
  • an embodiment of the present invention provides a surface decoration method for a magnesium alloy encapsulated product.
  • the method includes the following steps:
  • Step 101 Putting a magnesium alloy encapsulated product into a degreasing agent for degreasing treatment
  • Step 102 Washing the degreased magnesium alloy encapsulated product with water
  • Step 103 performing a micro-arc oxidation treatment on the magnesium alloy encapsulated product
  • Step 104 Washing the magnesium alloy encapsulated product after micro-arc oxidation treatment
  • Step 105 Baking the magnesium alloy encapsulated product.
  • the degreasing agent is M-121
  • the concentration of the degreaser is 20-80 g/l
  • the degreasing treatment temperature is 75-85 ° C
  • the time is 240-300 seconds.
  • the micro-arc oxidation power supply device in the step 103 adopts a single pulse manual/automatic output mode; mode selection: constant current mode, current density: 0.8-2.0 A/dm 2 , frequency: 300-650 Hz, duty Ratio: 10-35%, oxidation cycle: 3-10 minutes.
  • the step 103 micro-arc oxidation electrolyte formulation is as follows: main film forming agent 5-30g / l; pH adjusting agent 5-30g / l; film forming auxiliary 5-25g / l; additive 3-30g / l
  • the electrolyte has a pH of 9.0-13.0 and a reaction temperature of 20-40 °C.
  • the main film former is one of a silicate, a phosphate, an aluminate or a mixture thereof.
  • the pH adjusting agent is: sodium hydroxide or potassium hydroxide.
  • the coalescent is a fluorine-containing compound such as potassium fluoride or sodium fluoride.
  • the baking temperature in the step 105 is 50-95 ° C, and the baking time is 10-30 minutes.
  • the additive is a mixture of a plurality of components of an organic acid salt and a complexing agent.
  • the additive concentration of the additive is different, the arcing voltage and the thickness of the film layer are different, and the degree of influence on the appearance of the plastic part is different.
  • FIG. 2 is a flow chart showing the surface decoration method of the magnesium alloy encapsulated product according to the second embodiment of the present invention.
  • an embodiment of the present invention provides a surface decoration method for a magnesium alloy encapsulated product.
  • the method includes the following steps:
  • Step 201 Putting the magnesium alloy encapsulated product into a degreasing agent for degreasing treatment
  • Step 202 Washing the degreased magnesium alloy encapsulated product with water
  • Step 203 performing a micro-arc oxidation treatment on the magnesium alloy encapsulated product
  • Step 204 Washing the magnesium alloy encapsulated product after micro-arc oxidation treatment
  • Step 205 baking the magnesium alloy encapsulated product
  • Step 206 Spraying the dried magnesium alloy encapsulated product.
  • the painting treatment in the step 206 adopts a quick-drying two-liquid polyurethane paint or a one-liquid polyacrylate paint.
  • the embodiment of the invention provides a surface decorative molded product of a magnesium alloy encapsulated product, which is a molded article produced according to the surface decoration method of the above magnesium alloy encapsulated product.
  • FIG. 3 is a schematic view of a molded article produced by the surface decoration method of the magnesium alloy encapsulated product according to the embodiment of the present invention (corresponding to the first embodiment).
  • FIG. 4 is a schematic view of the molded article of FIG. 3 after painting (corresponding to the second embodiment).
  • the surface decoration method and the molded article of the magnesium alloy encapsulating product of the embodiment of the invention combine the micro-arc oxidation technology with the spraying technology to electrically immerse the product into the configured chemical agent at a certain current.
  • the density a uniform film layer with good corrosion resistance and leveling is formed on the surface of the magnesium alloy, and the number of conventional coatings can be reduced from 3-4 layers to 1-2 layers during the coating process.

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  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
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  • Manufacturing & Machinery (AREA)
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Abstract

Provided are a magnesium alloy rubber coated product surface decoration method and a molded product thereof. The method comprises the following steps: (1) putting the magnesium alloy rubber coated product into a degreasing agent for degreasing; (2) washing the degreased magnesium alloy rubber coated product with water; (3) processing a micro-arc oxidation on the magnesium alloy rubber coted product; (4) washing the micro-arc oxidation processed magnesium alloy rubber coated product with water; and (5) baking the magnesium alloy rubber coated product. The molded product is a molded product produced according to the method. The method combines a micro-arc oxidation technology and a spraying technology, immerses the product into a configured chemical agent, and at a certain current density, a layer of uniform film with good corrosion resistance and leveling property is formed on the magnesium alloy surface. In the coating process, the number of layers of traditional coating can be reduced from 3-4 layers 1-2 layers, which greatly reduces the number of coating, and will help meet the environmental requirements and shorten the process.

Description

镁合金包胶产品的表面装饰方法及其成型品Surface decoration method of magnesium alloy rubberized product and molded product thereof 技术领域Technical field
本申请涉及一种表面装饰方法及其成型品，例如一种镁合金包胶产品的表面装饰方法及其成型品。The present application relates to a surface decoration method and a molded article thereof, such as a surface decoration method of a magnesium alloy rubberized product and a molded article thereof.
背景技术Background technique
镁合金产品具有散热快，质量轻，刚性好，具有一定的耐蚀性和尺寸稳定性，抗冲击，耐磨，衰减性能好及易于回收的特点；另外具有高的导热，无磁性，电磁屏蔽性能好和无毒的特点，应用于携带式的电子产品和汽车行业中，达到轻量化的目的。良好的屏蔽性能让镁合金在3C行业应用越来越广泛，但因其化学性质活泼，电极电位很低极易腐蚀使其应用受到了限制。Magnesium alloy products have the advantages of fast heat dissipation, light weight, good rigidity, certain corrosion resistance and dimensional stability, impact resistance, wear resistance, good attenuation performance and easy recycling; in addition, high thermal conductivity, non-magnetic, electromagnetic shielding Good performance and non-toxic characteristics, used in portable electronic products and automotive industry to achieve lightweight. Good shielding properties make magnesium alloys more and more widely used in the 3C industry, but their application is limited due to their chemical nature, low electrode potential and high corrosion resistance.
3C产业通讯类产品大都会设计局部无需电磁屏蔽性能以保证满足其收发信号的要求，无法整件全部采用镁合金，为此设计人员现大部分采用镁合金加包胶射出成型技术达到此目的。3C industry communication products Metropolitan design part does not need electromagnetic shielding performance to ensure that it meets the requirements of its transmission and reception signals. It is impossible to use magnesium alloy in all parts. For this reason, most of the designers use magnesium alloy and rubber injection molding technology to achieve this goal.
然而，这种成型工艺的镁合金产品目前多采用喷涂3-4层油漆的方法处理完善镁合金和塑料产品之间的结合线，达到外观要求。多涂层喷漆工艺不仅生产周期长、人力工时消耗较多，而且油漆的耗费也较大，不符合环保减排的环境要求。However, the magnesium alloy products of this molding process are currently processed by a method of spraying 3-4 layers of paint to complete the bonding line between the magnesium alloy and the plastic product to meet the appearance requirements. The multi-coat painting process not only has a long production cycle, but also consumes a lot of man-hours, and the consumption of paint is also large, which does not meet the environmental requirements of environmental protection and emission reduction.
有鉴于此，实有必要提供一种镁合金包胶产品的表面装饰方法及其成型品，以解决上述问题。In view of this, it is necessary to provide a surface decoration method of a magnesium alloy rubberized product and a molded article thereof to solve the above problems.
发明内容Summary of the invention
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.
因此，本申请的目的是提供一种镁合金包胶产品的表面装饰方法及其成型 品，利用微弧氧化技术在镁合金表面生成一层具有良好的耐腐蚀性和整平性的均匀膜层，克服镁合金产品表面的不平整性，在后面的涂装处理时，可使传统的涂层数从3-4层缩减到1-2层，大大减少涂装次数，利于满足环保要求，缩短流程。Therefore, the purpose of the present application is to provide a surface decoration method for magnesium alloy encapsulated products and molding thereof. Using micro-arc oxidation technology to form a uniform film with good corrosion resistance and leveling on the surface of magnesium alloy, to overcome the unevenness of the surface of magnesium alloy products, and to make the tradition in the subsequent coating process The number of coatings has been reduced from 3-4 layers to 1-2 layers, which greatly reduces the number of coatings, which is conducive to meeting environmental requirements and shortening the process.
为了达到上述目的，本发明实施例提供一种镁合金包胶产品的表面装饰方法，其包括以下步骤：In order to achieve the above object, an embodiment of the present invention provides a surface decoration method for a magnesium alloy rubberized product, which comprises the following steps:
(1)将镁合金包胶产品放入脱脂剂中进行脱脂处理；(1) Putting the magnesium alloy encapsulated product into a degreasing agent for degreasing treatment;
(2)将脱脂处理后的镁合金包胶产品进行水洗；(2) washing the magnesium alloy encapsulated product after degreasing treatment;
(3)将镁合金包胶产品进行微弧氧化处理；(3) subjecting the magnesium alloy encapsulated product to micro-arc oxidation treatment;
(4)将微弧氧化处理后的镁合金包胶产品进行水洗；(4) washing the magnesium alloy encapsulated product after micro-arc oxidation treatment;
(5)将镁合金包胶产品进行烘烤。(5) Baking the magnesium alloy rubberized product.
可选地，所述步骤(1)中脱脂剂为M-121，脱脂剂的浓度为20-80g/l；脱脂处理温度为75-85℃，时间为240-300秒。Optionally, the degreasing agent in the step (1) is M-121, the concentration of the degreasing agent is 20-80 g/l; the degreasing treatment temperature is 75-85 ° C, and the time is 240-300 seconds.
可选地，所述步骤(3)中微弧氧化电源设备采用一种单脉冲手动式/自动输出方式；模式选择：恒流模式，电流密度：0.8-2.0A/dm2，频率：300-650Hz，占空比：10-35％，氧化周期：3-10分钟。Optionally, the micro-arc oxidation power supply device in the step (3) adopts a single-pulse manual/automatic output mode; mode selection: constant current mode, current density: 0.8-2.0 A/dm 2 , frequency: 300- 650Hz, duty cycle: 10-35%, oxidation cycle: 3-10 minutes.
可选地，所述步骤(3)中微弧氧化电解液配方如下：主成膜剂5-30g/l；pH值调节剂5-30g/l；成膜助剂5-25g/l；添加剂3-30g/l；该电解液的pH值为9.0-13.0，反应温度：20-40℃。Optionally, the micro-arc oxidation electrolyte formulation in the step (3) is as follows: a main film-forming agent 5-30 g/l; a pH adjuster 5-30 g/l; a film-forming auxiliary agent 5-25 g/l; an additive; 3-30 g / l; the pH of the electrolyte is 9.0-13.0, and the reaction temperature is 20-40 °C.
可选地，所述主成膜剂为硅酸盐、磷酸盐、铝酸盐中的一种或其混合物。Optionally, the primary film former is one of a silicate, a phosphate, an aluminate, or a mixture thereof.
可选地，所述pH值调节剂为：氢氧化钠或氢氧化钾。Optionally, the pH adjusting agent is: sodium hydroxide or potassium hydroxide.
可选地，所述成膜助剂为：含氟化合物，例如氟化钾或氟化钠。Optionally, the film forming aid is: a fluorine-containing compound such as potassium fluoride or sodium fluoride.
可选地，所述添加剂是由有机酸盐、络合剂多组分组成的混合物。Optionally, the additive is a mixture of multiple components of an organic acid salt and a complexing agent.
可选地，所述步骤(5)中的烘烤温度：50-95℃，烘烤时间：10-30分钟。Optionally, the baking temperature in the step (5) is 50-95 ° C, and the baking time is 10-30 minutes.
可选地，该方法还包括步骤(6)将烘干后的镁合金包胶产品进行喷漆处理。Optionally, the method further comprises the step (6) of painting the dried magnesium alloy encapsulated product.
可选地，所述步骤(6)中的喷漆处理采用的是快干型双液型聚氨酯油漆或 单液型聚丙烯酸酯类油漆。Optionally, the painting process in the step (6) adopts a quick-drying two-liquid polyurethane paint or Single-liquid polyacrylate paint.
本申请提供一种镁合金包胶产品的表面装饰成型品，该成型品为依据上述镁合金包胶产品的表面装饰方法产生的成型品。The present application provides a surface decorative molded article of a magnesium alloy encapsulated product, which is a molded article produced according to the surface decoration method of the above magnesium alloy encapsulated product.
相较于现有技术，本发明实施例的镁合金包胶产品的表面装饰方法及其成型品，将微弧氧化技术与喷涂技术结合，将产品通电浸入配置好的化学药剂中，在一定电流密度下，在镁合金表面生成一层具有良好的耐腐蚀性和整平性的均匀膜层，在涂装处理时，可使传统的涂层数从3-4层缩减到1-2层，大大减少涂装次数，利于满足环保要求，缩短流程。Compared with the prior art, the surface decoration method and the molded article of the magnesium alloy encapsulating product of the embodiment of the invention combine the micro-arc oxidation technology with the spraying technology to electrically immerse the product into the configured chemical agent at a certain current. At the density, a uniform film layer with good corrosion resistance and leveling is formed on the surface of the magnesium alloy, and the number of conventional coatings can be reduced from 3-4 layers to 1-2 layers during the coating process. Greatly reduce the number of paintings, which is conducive to meeting environmental requirements and shortening the process.
在阅读并理解了附图和详细描述后，可以明白其他方面。Other aspects will be apparent upon reading and understanding the drawings and detailed description.
附图说明DRAWINGS
图1绘示本发明第一实施例镁合金包胶产品的表面装饰方法流程图。1 is a flow chart showing a surface decoration method of a magnesium alloy rubberized product according to a first embodiment of the present invention.
图2绘示本发明第二实施例镁合金包胶产品的表面装饰方法流程图。2 is a flow chart showing a surface decoration method of a magnesium alloy encapsulated product according to a second embodiment of the present invention.
图3为本发明实施例镁合金包胶产品的表面装饰方法产生的成型品示意图。3 is a schematic view showing a molded article produced by a surface decoration method of a magnesium alloy encapsulated product according to an embodiment of the present invention.
图4为图3中成型品涂装后的示意图。Fig. 4 is a schematic view showing the molded article of Fig. 3 after being coated.
具体实施方式detailed description
请参阅图1，图1绘示本发明第一实施例镁合金包胶产品的表面装饰方法流程图。Please refer to FIG. 1. FIG. 1 is a flow chart showing a surface decoration method of a magnesium alloy encapsulated product according to a first embodiment of the present invention.
为了达到上述目的，本发明实施例提供一种镁合金包胶产品的表面装饰方法，于第一实施例，其包括以下步骤：In order to achieve the above object, an embodiment of the present invention provides a surface decoration method for a magnesium alloy encapsulated product. In the first embodiment, the method includes the following steps:
步骤101：将镁合金包胶产品放入脱脂剂中进行脱脂处理；Step 101: Putting a magnesium alloy encapsulated product into a degreasing agent for degreasing treatment;
步骤102：将脱脂处理后的镁合金包胶产品进行水洗；Step 102: Washing the degreased magnesium alloy encapsulated product with water;
步骤103：将镁合金包胶产品进行微弧氧化处理；Step 103: performing a micro-arc oxidation treatment on the magnesium alloy encapsulated product;
步骤104：将微弧氧化处理后的镁合金包胶产品进行水洗；Step 104: Washing the magnesium alloy encapsulated product after micro-arc oxidation treatment;
步骤105：将镁合金包胶产品进行烘烤。Step 105: Baking the magnesium alloy encapsulated product.
其中，所述步骤101中脱脂剂为M-121，脱脂剂的浓度为20-80g/l；脱脂处理温度为75-85℃，时间为240-300秒。 Wherein, in the step 101, the degreasing agent is M-121, the concentration of the degreaser is 20-80 g/l; the degreasing treatment temperature is 75-85 ° C, and the time is 240-300 seconds.
其中，所述步骤103中微弧氧化电源设备采用一种单脉冲手动式/自动输出方式；模式选择：恒流模式，电流密度：0.8-2.0A/dm2，频率：300-650Hz，占空比：10-35％，氧化周期：3-10分钟。Wherein, the micro-arc oxidation power supply device in the step 103 adopts a single pulse manual/automatic output mode; mode selection: constant current mode, current density: 0.8-2.0 A/dm 2 , frequency: 300-650 Hz, duty Ratio: 10-35%, oxidation cycle: 3-10 minutes.
其中，所述步骤103微弧氧化电解液配方如下：主成膜剂5-30g/l；pH值调节剂5-30g/l；成膜助剂5-25g/l；添加剂3-30g/l；该电解液的pH值为9.0-13.0，反应温度：20-40℃。Wherein, the step 103 micro-arc oxidation electrolyte formulation is as follows: main film forming agent 5-30g / l; pH adjusting agent 5-30g / l; film forming auxiliary 5-25g / l; additive 3-30g / l The electrolyte has a pH of 9.0-13.0 and a reaction temperature of 20-40 °C.
其中，所述主成膜剂为硅酸盐、磷酸盐、铝酸盐中的一种或其混合物。所述pH值调节剂为：氢氧化钠或氢氧化钾。所述成膜助剂为：含氟化合物，例如氟化钾或氟化钠。Wherein the main film former is one of a silicate, a phosphate, an aluminate or a mixture thereof. The pH adjusting agent is: sodium hydroxide or potassium hydroxide. The coalescent is a fluorine-containing compound such as potassium fluoride or sodium fluoride.
其中，所述步骤105中的烘烤温度：50-95℃，烘烤时间：10-30分钟。Wherein, the baking temperature in the step 105 is 50-95 ° C, and the baking time is 10-30 minutes.
其中，所述添加剂是由有机酸盐、络合剂多组分组成的混合物。添加剂的添加浓度不同、起弧电压及膜层厚度不同，对塑件外观影响程度不同。Wherein, the additive is a mixture of a plurality of components of an organic acid salt and a complexing agent. The additive concentration of the additive is different, the arcing voltage and the thickness of the film layer are different, and the degree of influence on the appearance of the plastic part is different.
请参阅下表，其为添加剂浓度不同时的试验结果Please refer to the table below for the test results when the additive concentration is different.
试验号Test number 添加剂(g/l)Additive (g/l) 起弧电压(V)Starting voltage (V) 塑件外观Plastic appearance 膜层厚度Film thickness
1#1# 33 390390 轻微破损Minor damage 12-1512-15
2#2# 55 360360 良好good 8-108-10
3#3# 88 330330 良好good 6-86-8
4#4# 1010 310310 良好good 5-85-8
5#5# 1515 280280 良好good 1-21-2
请再参阅图2，图2绘示本发明第二实施例镁合金包胶产品的表面装饰方法流程图。Please refer to FIG. 2 again. FIG. 2 is a flow chart showing the surface decoration method of the magnesium alloy encapsulated product according to the second embodiment of the present invention.
为了达到上述目的，本发明实施例提供一种镁合金包胶产品的表面装饰方法，于第一实施例，其包括以下步骤：In order to achieve the above object, an embodiment of the present invention provides a surface decoration method for a magnesium alloy encapsulated product. In the first embodiment, the method includes the following steps:
步骤201：将镁合金包胶产品放入脱脂剂中进行脱脂处理；Step 201: Putting the magnesium alloy encapsulated product into a degreasing agent for degreasing treatment;
步骤202：将脱脂处理后的镁合金包胶产品进行水洗；Step 202: Washing the degreased magnesium alloy encapsulated product with water;
步骤203：将镁合金包胶产品进行微弧氧化处理；Step 203: performing a micro-arc oxidation treatment on the magnesium alloy encapsulated product;
步骤204：将微弧氧化处理后的镁合金包胶产品进行水洗； Step 204: Washing the magnesium alloy encapsulated product after micro-arc oxidation treatment;
步骤205：将镁合金包胶产品进行烘烤；Step 205: baking the magnesium alloy encapsulated product;
步骤206：将烘干后的镁合金包胶产品进行喷漆处理。Step 206: Spraying the dried magnesium alloy encapsulated product.
其中，所述步骤206中的喷漆处理采用的是快干型双液型聚氨酯油漆或单液型聚丙烯酸酯类油漆。Wherein, the painting treatment in the step 206 adopts a quick-drying two-liquid polyurethane paint or a one-liquid polyacrylate paint.
本发明实施例提供一种镁合金包胶产品的表面装饰成型品，该成型品为依据上述镁合金包胶产品的表面装饰方法产生的成型品。The embodiment of the invention provides a surface decorative molded product of a magnesium alloy encapsulated product, which is a molded article produced according to the surface decoration method of the above magnesium alloy encapsulated product.
请结合参阅图3，图3为本发明实施例镁合金包胶产品的表面装饰方法产生的成型品示意图(对应第一实施例)。Referring to FIG. 3 together, FIG. 3 is a schematic view of a molded article produced by the surface decoration method of the magnesium alloy encapsulated product according to the embodiment of the present invention (corresponding to the first embodiment).
请结合参阅图4，图4为图3中成型品涂装后的示意图(对应第二实施例)。Please refer to FIG. 4 together. FIG. 4 is a schematic view of the molded article of FIG. 3 after painting (corresponding to the second embodiment).
请再参阅下表，其为相关性能测试(微弧氧化结合1个涂层)Please refer to the table below for related performance tests (micro-arc oxidation combined with 1 coating)
Figure PCTCN2017090281-appb-000001
Figure PCTCN2017090281-appb-000001
相较于现有技术，本发明实施例的镁合金包胶产品的表面装饰方法及其成型品，将微弧氧化技术与喷涂技术结合，将产品通电浸入配置好的化学药剂中，在一定电流密度下，在镁合金表面生成一层具有良好的耐腐蚀性和整平性的均匀膜层，在涂装处理时，可使传统的涂层数从3-4层缩减到1-2层，大大减少涂装次数，利于满足环保要求，缩短流程。Compared with the prior art, the surface decoration method and the molded article of the magnesium alloy encapsulating product of the embodiment of the invention combine the micro-arc oxidation technology with the spraying technology to electrically immerse the product into the configured chemical agent at a certain current. At the density, a uniform film layer with good corrosion resistance and leveling is formed on the surface of the magnesium alloy, and the number of conventional coatings can be reduced from 3-4 layers to 1-2 layers during the coating process. Greatly reduce the number of paintings, which is conducive to meeting environmental requirements and shortening the process.
需指出的是，本发明不限于上述实施方式，任何熟悉本专业的技术人员基于本发明技术方案对上述实施例所作的任何简单修改、等同变化与修饰，都落入本发明的保护范围内。 It is to be noted that the present invention is not limited to the above-described embodiments, and any simple modifications, equivalent changes and modifications of the above-described embodiments based on the technical solutions of the present invention are all within the scope of the present invention.

Claims (13)

  1. 一种镁合金包胶产品的表面装饰方法，其包括以下步骤：A surface decoration method for a magnesium alloy rubberized product, comprising the following steps:
    (1)将镁合金包胶产品放入脱脂剂中进行脱脂处理；(1) Putting the magnesium alloy encapsulated product into a degreasing agent for degreasing treatment;
    (2)将脱脂处理后的镁合金包胶产品进行水洗；(2) washing the magnesium alloy encapsulated product after degreasing treatment;
    (3)将镁合金包胶产品进行微弧氧化处理；(3) subjecting the magnesium alloy encapsulated product to micro-arc oxidation treatment;
    (4)将微弧氧化处理后的镁合金包胶产品进行水洗；(4) washing the magnesium alloy encapsulated product after micro-arc oxidation treatment;
    (5)将镁合金包胶产品进行烘烤。(5) Baking the magnesium alloy rubberized product.
  2. 如权利要求1所述的镁合金包胶产品的表面装饰方法，其中，所述步骤(1)中脱脂剂为M-121，脱脂剂的浓度为20-80g/l；脱脂处理温度为75-85℃，时间为240-300秒。The surface decoration method for a magnesium alloy-clad product according to claim 1, wherein the degreasing agent in the step (1) is M-121, the concentration of the degreasing agent is 20-80 g/l, and the degreasing treatment temperature is 75- 85 ° C, time is 240-300 seconds.
  3. 如权利要求1所述的镁合金包胶产品的表面装饰方法，其中，所述步骤(3)中微弧氧化电源设备采用一种单脉冲手动式/自动输出方式；模式选择：恒流模式，电流密度：0.8-2.0A/dm2，频率：300-650hz，占空比：10-35％，氧化周期：3-10分钟。The surface decoration method for a magnesium alloy encapsulated product according to claim 1, wherein the micro-arc oxidation power supply device in the step (3) adopts a single-pulse manual/automatic output mode; mode selection: constant current mode, Current density: 0.8-2.0 A/dm 2 , frequency: 300-650 hz, duty ratio: 10-35%, oxidation period: 3-10 minutes.
  4. 如权利要求1所述的镁合金包胶产品的表面装饰方法，其中，所述步骤(3)中微弧氧化电解液配方如下：主成膜剂5-30g/l；pH值调节剂5-30g/l；成膜助剂5-25g/l；添加剂3-30g/l；该电解液的pH值为9.0-13.0，反应温度：20-40℃。The surface decoration method for a magnesium alloy-clad product according to claim 1, wherein the micro-arc oxidation electrolyte solution in the step (3) is as follows: a main film-forming agent 5-30 g/l; a pH adjuster 5- 30 g / l; filming aid 5-25g / l; additive 3-30g / l; the pH of the electrolyte is 9.0-13.0, the reaction temperature: 20-40 ° C.
  5. 如权利要求4所述的镁合金包胶产品的表面装饰方法，其中，所述主成膜剂为硅酸盐、磷酸盐、铝酸盐中的一种或其混合物。The surface decoration method of a magnesium alloy-clad product according to claim 4, wherein the main film-forming agent is one of a silicate, a phosphate, an aluminate or a mixture thereof.
  6. 如权利要求4所述的镁合金包胶产品的表面装饰方法，其中，所述pH值调节剂为：氢氧化钠或氢氧化钾。The surface decoration method of a magnesium alloy-clad product according to claim 4, wherein the pH adjuster is sodium hydroxide or potassium hydroxide.
  7. 如权利要求4所述的镁合金包胶产品的表面装饰方法，其中，所述成膜助剂为：含氟化合物。The surface decoration method of a magnesium alloy-clad product according to claim 4, wherein the film-forming auxiliary agent is a fluorine-containing compound.
  8. 如权利要求7所述的镁合金包胶产品的表面装饰方法，其中所述成膜助剂为：氟化钾或氟化钠。 The surface decoration method of a magnesium alloy-clad product according to claim 7, wherein the film-forming auxiliary agent is potassium fluoride or sodium fluoride.
  9. 如权利要求4所述的镁合金包胶产品的表面装饰方法，其中，所述添加剂是由有机酸盐、络合剂多组分组成的混合物。The surface decoration method of a magnesium alloy-clad product according to claim 4, wherein the additive is a mixture of an organic acid salt and a complexing agent.
  10. 如权利要求1所述的镁合金包胶产品的表面装饰方法，其中，所述步骤(5)中的烘烤温度：50-95℃，烘烤时间：10-30分钟。The surface decoration method of the magnesium alloy-clad product according to claim 1, wherein the baking temperature in the step (5) is 50-95 ° C, and the baking time is 10-30 minutes.
  11. 如权利要求1-10中任一项所述的镁合金包胶产品的表面装饰方法，于所述步骤(5)后还包括步骤(6)将烘干后的镁合金包胶产品进行喷漆处理。The method for surface decoration of a magnesium alloy encapsulated product according to any one of claims 1 to 10, further comprising the step (6) of spraying the dried magnesium alloy encapsulated product after the step (5) .
  12. 如权利要求11中所述的镁合金包胶产品的表面装饰方法，其中，所述步骤(6)中的喷漆处理采用的是快干型双液型聚氨酯油漆或单液型聚丙烯酸酯类油漆。A surface decoration method for a magnesium alloy-clad product according to claim 11, wherein the painting treatment in the step (6) is a quick-drying two-liquid polyurethane paint or a one-liquid polyacrylate paint. .
  13. 一种镁合金包胶产品的表面装饰成型品，其为依据上述权利要求1-12中任一项所述的镁合金包胶产品的表面装饰方法产生的成型品。 A surface decorative molded article of a magnesium alloy-clad product, which is a molded article produced by the surface finishing method of the magnesium alloy-clad product according to any one of claims 1 to 12.
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