WO2019205010A1 - 水性电磁屏蔽涂料及其制备方法和应用 - Google Patents

水性电磁屏蔽涂料及其制备方法和应用 Download PDF

Info

Publication number
WO2019205010A1
WO2019205010A1 PCT/CN2018/084420 CN2018084420W WO2019205010A1 WO 2019205010 A1 WO2019205010 A1 WO 2019205010A1 CN 2018084420 W CN2018084420 W CN 2018084420W WO 2019205010 A1 WO2019205010 A1 WO 2019205010A1
Authority
WO
WIPO (PCT)
Prior art keywords
electromagnetic shielding
aqueous
shielding coating
aqueous electromagnetic
coating according
Prior art date
Application number
PCT/CN2018/084420
Other languages
English (en)
French (fr)
Inventor
王玉龙
李立星
陈渭涛
Original Assignee
深圳鹏汇功能材料有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳鹏汇功能材料有限公司 filed Critical 深圳鹏汇功能材料有限公司
Priority to PCT/CN2018/084420 priority Critical patent/WO2019205010A1/zh
Priority to CN201880000336.4A priority patent/CN108699386A/zh
Publication of WO2019205010A1 publication Critical patent/WO2019205010A1/zh

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08Anti-corrosive paints
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/24Electrically-conducting paints
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/08Metals
    • C08K2003/085Copper

Definitions

  • the present invention belongs to the technical field of coatings, and in particular relates to an aqueous electromagnetic shielding coating, a preparation method thereof and an application thereof.
  • Electromagnetic waves not only serve the normal use of electronic components. Interference and harm to human health.
  • the conventional electromagnetic shielding material is generally shielded by a copper foil or a metal cover. Due to the high cost, the product substrate itself is irregular and the construction is difficult, and the like, the utility model cannot be used in a large area, and a new practical technology shielding coating is used.
  • the conductive coating can be easily sprayed onto the surface of various shapes of the base material to form an electromagnetic shielding conductive layer, so that the material can achieve the purpose of shielding electromagnetic waves.
  • electromagnetic shielding coatings are thermoplastic coatings and thermosetting coatings.
  • the thermoplastic coating is generally selected from a relatively large molecular weight thermoplastic resin, dissolved in a specific solvent (generally a toxic organic solvent), when the coating is applied to the substrate, the solvent is evaporated and dried, and the remaining The thermoplastic coating will adhere evenly over the substrate.
  • a specific solvent generally a toxic organic solvent
  • Thermosetting coatings mainly adding a curing agent (heat curing agent, light curing agent) to the coating, have good mechanical properties after forming the coating, but generally need to be cured by external conditions such as light and heat.
  • thermoplastic coatings and thermosetting coatings are conductive coatings containing organic solvents such as xylene or etheric toxic solvents. That is to say, most of the current shielding coatings use electromagnetic shielding coatings containing harmful organic solvents, which have the following disadvantages: 1. Harmful substances will cause environmental pollution and damage human health; 2. Corrosiveness Excessively strong, it is prone to cracks on workpieces with poor quality; 3. Drying speed is too slow, generally can be dried at 70 degrees and 30 minutes; 4. Poor stability, low viscosity, capacity Easy to settle.
  • the water-based electromagnetic shielding coating has the problems of poor adhesion and uneven dispersion.
  • the object of the present invention is to overcome the above-mentioned deficiencies of the prior art, and to provide an aqueous electromagnetic shielding coating and a preparation method thereof, to solve the problem that the existing organic solvent electromagnetic shielding coating contains harmful components and causes damage to the workpiece, and the water-based electromagnetic shielding is attached.
  • Technical problems of poor focus and uneven dispersion are to overcome the above-mentioned deficiencies of the prior art, and to provide an aqueous electromagnetic shielding coating and a preparation method thereof, to solve the problem that the existing organic solvent electromagnetic shielding coating contains harmful components and causes damage to the workpiece, and the water-based electromagnetic shielding is attached.
  • an aqueous electromagnetic shielding coating comprises the following components by weight:
  • a method of making an aqueous electromagnetic shielding coating comprises the following steps:
  • Each of the components referred to is subjected to a mixing treatment.
  • a method of applying the aqueous electromagnetic shielding coating of the invention is provided.
  • the aqueous electromagnetic shielding coating is applied to the preparation of a workpiece of any of plastic, resin, glass, ceramic, wood, and leather.
  • the aqueous electromagnetic shielding coating of the present invention acts synergistically on the conductive powder by the binder, the thickener and the functional auxiliary and the solvent contained therein, so that the conductive powder can be made Evenly dispersed, Moreover, the solid content is high, and the anti-settling effect is good, the storage is stable, and the liquid solids are not separated, so that the conductive powder in the coating formed by the water-based electromagnetic shielding coating of the invention has uniform distribution and high distribution density, and is thicker than the film. Smaller, it effectively improves the electromagnetic shielding effect, and the coating has strong adhesion and excellent chemical resistance.
  • the system formed by the binder, the thickener, the functional additive and the solvent does not cause cracks in the workpiece, and the water-based electromagnetic shielding coating has good workability, good leveling effect, and uniform arrangement.
  • the preparation method of the aqueous electromagnetic shielding coating of the present invention through the preparation process thereof, makes the components uniformly dispersed to form a stable dispersion system.
  • the preparation method has easy controllable process conditions, can ensure stable performance of the prepared water-based electromagnetic shielding coating, and effectively reduces the production cost thereof, and is suitable for industrial production.
  • the weight of each component mentioned in the description of the embodiments of the present invention may not only refer to the specific content of each component, but also the proportional relationship between the weights of the components, and therefore, as long as it is implemented according to the present invention
  • the content of each component in the specification is enlarged or reduced in proportion to the scope disclosed in the specification of the embodiment of the present invention.
  • the weights described in the description of the embodiments of the present invention may be weight units well known in the chemical arts such as
  • an embodiment of the invention provides an aqueous electromagnetic shielding coating.
  • the aqueous electromagnetic shielding coating comprises the following components by weight:
  • the aqueous polyurethane adhesive can synergize with components such as functional additives, on the one hand, can improve the surface leveling effect of the aqueous electromagnetic shielding coating, and improve the adsorption and chemical resistance of the coating;
  • components such as thickeners can improve the anti-sedimentation effect of the water-based electromagnetic shielding coating, the storage stability is good, the liquid solids are not separated, and the solid content is improved.
  • the aqueous polyurethane adhesive comprises one or a mixture of an aqueous polyurethane resin and an aqueous emulsion water dispersion resin.
  • the binder such as the aqueous polyurethane resin or the aqueous emulsion water-dispersible resin can improve the synergistic effect with other components, thereby improving the stability, solid content, and adsorption and chemical resistance of the aqueous electromagnetic shielding coating system.
  • the aqueous emulsion water dispersion resin may include one or a mixture of an aqueous acrylic emulsion, an aqueous polyurethane dispersion.
  • the aqueous acrylic emulsion may be selected from D.
  • BASF JSF, Joncryl PDX-7159 aqueous acrylic emulsion, and the aqueous polyurethane dispersion may be selected from DSM DSM Neorez R-1010 aqueous polyurethane dispersion, Covestro, Germany ( Bayer) Dis perc oll U53 aqueous anionic polyurethane dispersion.
  • the aqueous polyurethane adhesive may be 5%, 8%, 10%, 12%, 14%, 15%, 18%, 20%, etc. by weight.
  • the functional auxiliary may include one or a mixture of a methylethanolamine-based polymer, an octylphenol ethoxylate. These functional additives have the dual functions of neutralization and wetting, can effectively stabilize the p H value, and can improve the water and scrub resistance of the coating film.
  • the functional auxiliary may have a weight percentage of 2.1%, 11%, 2.3%, 2.4%, 2.5% ⁇ 2.6%, 2.7% ⁇ 2.8%, 2.9%, 3. 0%, etc. .
  • the thickener may include one or a mixture of a hydrophobically modified acrylic associative thickener, a hydrophobically modified alkali soluble emulsion thickener, and a polymeric thickener.
  • the hydrophobically modified alkali-soluble emulsion type thickener may be Rohm and Haas TT935 hydrophobically modified alkali-soluble emulsion type thickener
  • the polymer thickener may be AcuSoL 820 polymer thickener.
  • the thickeners can effectively thicken the liquid, thereby improving the fluidity and leveling property of the water-based electromagnetic shielding coating, and the system formed by the components such as the aqueous polyurethane adhesive exhibits a clear transparent jelly-like emulsion, effectively encapsulating the conductive powder. Prevent settling.
  • the thickener may be 3.0%, 3.3%, 3.5%, 3.7%, 4%, 4.3% ⁇ 4.5% ⁇ 4.7% ⁇ 5%, 5.3%, 5.5% by weight. , 5.7% ⁇ 6.0%, etc.
  • the conductive powder imparts electrical conductivity to the aqueous electromagnetic shielding coating to impart electromagnetic shielding properties to the aqueous electromagnetic shielding coating.
  • the conductive powder may have a shape of one or a mixture of a spherical shape, a sheet shape, and a snow shape.
  • the spherical conductive powder has a diameter of 10-15u m, preferably 6-8 um.
  • the sheet-like conductive powder has a sheet diameter of 10-15 um.
  • the snow-like conductive powder has a diameter of 10-15 ⁇ m.
  • the conductive powder of such shapes and sizes can be uniformly and stably dispersed in a system composed of the binder, the thickener, the functional auxiliary, and the solvent, and the content is too high.
  • the material of the conductive powder includes one or a mixture of silver powder, silver-coated copper powder, nickel powder, and carbon nanotubes.
  • the conductive powder of the materials is excellent in electrical conductivity and imparts excellent electromagnetic shielding properties to the aqueous electromagnetic shielding coating.
  • the conductive powder may have a weight percentage of 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%. Wait.
  • the solvent provides a solvent carrier for the other components and acts with other components to stabilize the aqueous electromagnetic shielding coating dispersion system and have a high solid content.
  • the solvent is preferably an alcohol solvent.
  • the alcohol solvent comprises 18%-25% of absolute ethanol, 22%-28% of isopropanol, and propylene glycol methyl ether acetate relative to 100% by weight of the total weight of the aqueous electromagnetic shielding coating. 3%-8%.
  • the alcohol solvent is preferably used.
  • the mixed alcohol solvent preferably has excellent hydrophilicity and a high volatilization rate, and can effectively prevent cracking of the workpiece due to excessive corrosiveness of the alcohol solvent.
  • the aqueous electromagnetic shielding coating synergizes with the conductive powder by the binder, the thickener, the functional auxiliary, and the solvent contained therein, so that the conductive powder can be uniformly dispersed, and is solid.
  • the content is high, such as up to 45%, and the anti-settling effect is good, the storage is stable, and the liquid solids are not separated, so that the conductive powder in the coating formed by the water-based electromagnetic shielding coating has uniform distribution and high distribution density.
  • the resistance is small.
  • the dry film thickness of the aqueous electromagnetic shielding coating is 12 pm surface resistance ⁇ 0.02Q. Effectively improve the electromagnetic shielding effect, and the coating has strong adhesion and excellent chemical resistance.
  • the preferred alcohol solvent does not cause cracks in the workpiece, and the water-based electromagnetic shielding coating has good workability, good leveling effect, and uniform arrangement.
  • the embodiment of the invention further provides a preparation method of the above aqueous electromagnetic shielding coating.
  • the preparation method of the aqueous electromagnetic shielding coating comprises the following steps:
  • Step SOI weighing each component according to the components contained in the aqueous electromagnetic shielding coating described above and the ratio of the components;
  • Step S02 The components weighed in step S01 are subjected to a mixing treatment.
  • each component of the aqueous electromagnetic shielding coating in the above step S01 are as described above, and in order to save space, no further details are provided herein.
  • the mixing treatment in the above step S02 can be processed in a conventional manner, such as stirring, ultrasonic treatment, etc., so that the components are uniformly dispersed.
  • the mixing treatment in the step S02 is that the functional additive is first added to the solvent for mixing treatment, then the aqueous polyurethane adhesive and the thickener are mixed, and finally the conductive powder is added for mixing. Material processing.
  • the mixing treatment may be a conventional mixing treatment, such as stirring, ultrasonication, etc., as long as it is capable of uniformly mixing the components, which are within the scope of the present disclosure.
  • the agitation mixing treatment is employed, the agitation mixing treatment is agitation at a medium speed of 100 o/min.
  • the mixing treatment is carried out in this order, so that the components of the components can be dispersed and dissolved, thereby forming a stable dispersion slurry system.
  • the preparation method of the aqueous electromagnetic shielding coating material is dispersed in a uniform manner by a preparation process thereof to form a stable dispersion system.
  • the preparation method has easy controllable process conditions, can ensure stable performance of the prepared water-based electromagnetic shielding coating, and effectively reduces the production cost thereof, and is suitable for industrial production.
  • the aqueous electromagnetic shielding coating can be used in the preparation of a workpiece or electromagnetic shielding sheet of any of plastic, resin, glass, ceramic, wood, leather. Specifically, it is applied to a portion where the workpiece needs to be electromagnetically shielded.
  • the workpiece includes any one of a notebook computer case, a tablet computer case, a mobile phone case, a television case, a wireless network card case, a mobile base station case, and a medical instrument.
  • the water-based electromagnetic shielding coating may be coated on an inner surface or an outer surface such as a notebook computer case, a tablet computer case, a mobile phone case, a television housing, a wireless network card housing, a mobile base station box, or the like.
  • the electromagnetic shielding effect of the corresponding workpiece is improved, and the stability of the operation and performance of the corresponding electronic component can be effectively ensured.
  • the above-mentioned aqueous electromagnetic shielding coating can be directly coated on a substrate, dried, and then peeled off to form an electromagnetic shielding sheet.
  • This embodiment provides an aqueous electromagnetic shielding coating and a preparation method thereof, which comprise the following components by weight [0046] 7% of aqueous emulsion water dispersion resin, 35% of copper-coated copper powder, 3.5% of methylethanolamine, 5.5% of hydrophobically modified acrylic acid associative thickener, 18% of anhydrous ethanol, 5% of propylene glycol methyl ether acetate , isopropyl alcohol 26%. Wherein, the silver-coated copper powder has an average particle diameter of 7 ⁇ lpm.
  • the preparation method of the aqueous electromagnetic shielding coating of the embodiment comprises the following steps:
  • a hydrophobically modified acrylic acid associative thickener anhydrous ethanol, propylene glycol methyl ether acetate, isopropanol and the like;
  • This embodiment provides an aqueous electromagnetic shielding coating and a preparation method thereof, which comprise the following components by weight
  • the silver-coated copper powder has an average particle diameter of 7 ⁇ lpm.
  • the preparation method of the aqueous electromagnetic shielding coating of the embodiment comprises the following steps:
  • a hydrophobically modified acrylic acid associative thickener anhydrous ethanol, propylene glycol methyl ether acetate, isopropanol and the like;
  • This embodiment provides an aqueous electromagnetic shielding coating and a preparation method thereof, which comprise the following components by weight
  • the silver-coated copper powder has an average particle diameter of 7 ⁇ lpm.
  • the preparation method of the aqueous electromagnetic shielding coating of the embodiment comprises the following steps:
  • a hydrophobically modified acrylic acid associative thickener anhydrous ethanol, propylene glycol methyl ether acetate, isopropanol and the like;
  • This embodiment provides an aqueous electromagnetic shielding coating and a preparation method thereof, which comprise the following components by weight
  • the average particle diameter of the silver powder is 2-3.
  • the preparation method of the aqueous electromagnetic shielding coating of the embodiment comprises the following steps:
  • aqueous emulsion water-dispersing resin silver powder, methylethanolamine, hydrophobically modified acrylic acid associative thickener, anhydrous ethanol, propylene glycol methyl ether acetate, and the like are weighed.
  • a component such as propanol
  • This embodiment provides an aqueous electromagnetic shielding coating and a preparation method thereof, which comprise the following components by weight
  • the average particle diameter of the silver powder is 2-3.
  • the preparation method of the aqueous electromagnetic shielding coating of the embodiment comprises the following steps:
  • the propylene glycol methyl ether acetate, methylethanolamine, hydrophobically modified acrylic acid associative thickener, silver powder, and isopropyl alcohol component are mixed.
  • This embodiment provides an aqueous electromagnetic shielding coating and a preparation method thereof, which comprise the following components by weight
  • the silver powder has an average particle diameter of 2-3 um.
  • the preparation method can be obtained by referring to the preparation of Example 1.
  • This embodiment provides an aqueous electromagnetic shielding coating comprising the following components by weight:
  • the silver-coated copper powder has an average particle diameter of 7 ⁇ lpm.
  • This embodiment provides an aqueous electromagnetic shielding coating comprising the following components by weight:
  • the silver-coated copper powder has an average particle diameter of 7 ⁇ lpm.
  • the water-based electromagnetic shielding coating of the embodiment of the invention has a small coating resistance, good electromagnetic shielding effect, strong coating adhesion and high hardness.
  • the aqueous electromagnetic shielding coating dispersion is uniform.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Paints Or Removers (AREA)

Abstract

水性电磁屏蔽涂料包括如下重量百分比的组分:水性聚氨酯粘接剂5%-20%、导电粉体25%-35%、功能助剂2%-3%、增稠剂3%-6%、溶剂45%-55%。该水性电磁屏蔽涂料固含量高,分散体系稳定,形成的涂层电阻较小,有效提高电磁屏蔽效果,而且涂层附着力强,耐化学性优异。该水性电磁屏蔽涂料的制备方法工艺条件易控,能够保证制备的水性电磁屏蔽涂料性能稳定。

Description

水性电磁屏蔽涂料及其制备方法和应用
技术领域
[0001] 本发明属于涂料技术领域, 具体涉及一种水性电磁屏蔽涂料及其制备方法和应 用。
背景技术
[0002] 21世纪以来, 在现代通信、 自动化控制和计算机领域的飞速发展和应用给人们 的日常生活带来极大便利的同时也带来大量的电磁波干扰, 电磁波不仅对电子 元器件的正常使用产生干扰并对人体的健康产生危害。
[0003] 传统的电磁屏蔽材料一般采用铜箔或者金属罩屏蔽, 由于成本高, 产品基材本 身不规则导致施工困难等因素导致无法大面积应用而改用一种新型实用技术屏 蔽涂料。
[0004] 因此, 导电涂料应运而生。 导电涂料作为一种液体材料, 可以方便地喷涂到各 种形状的基底材料表面, 形成电磁屏蔽导电层, 从而使得材料达到屏蔽电磁波 的目的。 目前常见的电磁屏蔽涂料为热塑性涂料和热固性涂料。
[0005] 其中, 热塑性涂料一般是选用分子量比较大的热塑性树脂, 溶解于特定的溶剂 中(一般为有毒的有机溶剂), 当将该种涂料涂抹于基底上时, 溶剂挥发干燥后, 剩余的热塑性涂料就会均匀地附着在基底上面。 其缺点在于, 由于没有固化过 程, 力学性能较弱, 容易被外力作用造成损伤破坏, 而且选用有毒的溶剂, 且 涂料容易被其他溶剂再度腐蚀。 热固性涂料, 主要是在涂料中添加了固化剂(热 固化剂、 光固化剂), 在形成涂层后的力学性能较好, 但一般需要借助光和热等 外部条件来固化。
[0006] 此外, 无论是热塑性涂料还是热固性涂料, 均为含有有机溶剂(如二甲苯或醚 类有毒溶剂)的导电涂料。 也即是说目前屏蔽涂料大多采用含有害有机溶剂, 含 有害有机溶剂制作的电磁屏蔽涂料有以下几个缺点: 1.会产生有害物质对环境造 成污染, 损害人的身体健康; 2.腐蚀性过强, 对本身质量不好的工件容易产生裂 痕; 3.干燥速度过慢, 一般在 70度 30分钟才可以干燥; 4.稳定性差, 粘度低, 容 易沉降。
[0007] 而目前水性电磁屏蔽涂料又存在附着力差和分散不均匀的问题。
发明概述
技术问题
[0008] 本发明的目的在于克服现有技术的上述不足, 提供一种水性电磁屏蔽涂料和其 制备方法, 以解决现有有机溶剂电磁屏蔽涂料含有害成分、 对工件造成危害, 水性电磁屏蔽附着力差和分散不均匀的技术问题。
问题的解决方案
技术解决方案
[0009] 为了实现上述发明目的, 本发明的一方面, 提供了一种水性电磁屏蔽涂料。 所 述水性电磁屏蔽涂料包括如下重量百分比的组分:
[0010] 水性聚氨酯粘接剂 5%-20%
[0011] 导电粉体 25%-35%
[0012] 功能助剂 2%-3%
[0013] 增稠剂 3%-6%
[0014] 溶剂 45%-55%。
[0015] 本发明的另一方面, 提供了一种水性电磁屏蔽涂料的制备方法。 所述水性电磁 屏蔽涂料包括如下步骤:
[0016] 按照本发明水性电磁屏蔽涂料所含组分和所述组分的比例称取各组分;
[0017] 将称取的各所述组分进行混料处理。
[0018] 本发明的再一方面, 提供了本发明水性电磁屏蔽涂料的应用方法。 所述水性电 磁屏蔽涂料在制备塑料、 树脂、 玻璃、 陶瓷、 木质、 皮革中的任一种材质工件 中的应用。
发明的有益效果
有益效果
[0019] 与现有技术相比, 本发明水性电磁屏蔽涂料通过所含的所述粘结剂、 增稠剂和 功能助剂以及溶剂协同对所述导电粉体作用, 在使得导电粉体能够均匀分散, 而且固含量高, 而且防沉降效果好, 储存稳定行好, 液固体不分离, 从而使得 本发明水性电磁屏蔽涂料所形成的涂层中导电粉体分布均匀而且分布密度高, 较薄膜厚时电阻较小, 有效提高电磁屏蔽效果, 而且涂层附着力强, 耐化学性 优异。 另外, 所述粘结剂、 增稠剂和功能助剂以及溶剂所形成的体系不会造成 工件容易产生裂痕, 所述水性电磁屏蔽涂料施工性佳, 流平效果好, 排列均匀
[0020] 本发明水性电磁屏蔽涂料的制备方法通过其配制工艺, 使得各组分分散均匀, 以形成稳定的分散体系。 另外, 其制备方法工艺条件易控, 能够保证制备的水 性电磁屏蔽涂料性能稳定, 而且有效降低了其生产成本, 适于工业化生产。 发明实施例
本发明的实施方式
[0021] 为了使本发明要解决的技术问题、 技术方案及有益效果更加清楚明白, 以下结 合实施例, 对本发明进行进一步详细说明。 应当理解, 此处所描述的具体实施 例仅仅用以解释本发明, 并不用于限定本发明。
[0022] 本发明实施例说明书中所提到的各组分的重量不仅仅可以指代各组分的具体含 量, 也可以表示各组分间重量的比例关系, 因此, 只要是按照本发明实施例说 明书各组分的含量按比例放大或缩小均在本发明实施例说明书公开的范围之内 。 具体地, 本发明实施例说明书中所述的重量可以是 |Jg、 mg、 g、 kg等化工领域 公知的重量单位。
[0023] 一方面, 本发明实施例提供一种水性电磁屏蔽涂料。 所述水性电磁屏蔽涂料包 括如下重量百分比的组分:
[0024] 水性聚氨酯粘接剂 5%-20%
[0025] 导电粉体 25%-35%
[0026] 功能助剂 2%-3%
[0027] 增稠剂 3%-6%
[0028] 溶剂 45%-55%。
[0029] 其中, 所述水性聚氨酯粘接剂能够与功能助剂等组分协同作用, 一方面能够提 高所述水性电磁屏蔽涂料的表面流平效果, 提高涂层的吸附力和耐化学性; 另 方面, 与增稠剂等组分协同作用, 提高所述水性电磁屏蔽涂料防沉降效果好 , 储存稳定行好, 液固体不分离, 提高固含量。
[0030] 一实施例中, 所述水性聚氨酯粘接剂包括水性聚氨酯树脂、 水性乳化水分散树 脂中的一种或两种混合物。 该水性聚氨酯树脂、 水性乳化水分散树脂等粘结剂 能够提高其与其他组分的协同作用, 从而提高水性电磁屏蔽涂料体系的稳定性 、 固含量和涂层的吸附力和耐化学性。 其中, 所述水性乳化水分散树脂可以包 括水性丙烯酸乳液、 水性聚氨酯分散体中的一种或两种混合物。 其中, 所述水 性丙烯酸乳液可以选用 D.BASF德国巴斯夫 Joncryl PDX-7159水性丙烯酸乳液, 所述水性聚氨酯分散体可以选用 DSM帝斯曼先达 Neorez R-1010水性聚氨酯分散 体、 德国科思创 (拜耳) Dispercoll U53水性阴离子型聚氨酯分散体。 在具体实 施例中, 所述水性聚氨酯粘接剂的重量百分含量可以是 5%、 8%、 10%、 12%、 1 4%、 15%、 18%、 20%等。
[0031] 一实施例中, 所述功能助剂可以包括甲基乙醇胺类聚合物、 辛基酚聚氧乙烯醚 中的一种或两种混合物。 该些功能助剂具有中和及润湿双重作用, 可有效稳定 p H值, 可提高涂膜的耐水耐擦洗性等。 在具体实施例中, 所述功能助剂的重量百 分含量可以是 2.1%、 11%、 2.3%、 2.4%、 2.5% ^ 2.6%、 2.7% ^ 2.8%、 2.9%、 3. 0%等。
[0032] 一实施例中, 所述增稠剂可以包括疏水改性丙烯酸缔合型增稠剂、 疏水改性碱 溶性乳液型增稠剂、 聚合物增稠剂中的一种或两种混合物。 其中, 所述疏水改 性碱溶性乳液型增稠剂可以是罗门哈斯 TT935疏水改性碱溶性乳液型增稠剂, 所 述聚合物增稠剂可以是 AcuSoL 820聚合物增稠剂。 该些增稠剂能够有效增稠效 果, 从而提高所述水性电磁屏蔽涂料的流动性和流平性, 使水性聚氨酯粘接剂 等组分形成的体系呈现清澈透明果冻状乳液, 有效包裹导电粉末防止沉降。 在 具体实施例中, 所述增稠剂的重量百分含量可以是 3.0%、 3.3%、 3.5%、 3.7%、 4 %、 4.3% ^ 4.5% ^ 4.7% ^ 5%、 5.3%、 5.5%、 5.7% ^ 6.0%等。
[0033] 所述导电粉体赋予所述水性电磁屏蔽涂料的导电性能, 从而赋予所述水性电磁 屏蔽涂料的电磁屏蔽特性。 在一实施例中, 所述导电粉体的形状可以为球形、 片状、 雪花状中的一种或几种混合物。 其中, 球形所述导电粉体的直径为 10-15u m, 优选为 6-8um。 片状所述导电粉体的片径尺寸为 10-15um。 雪花状的所述导 电粉体的直径为 10- 15um。 该些形状和尺寸的所述导电粉体能够在所述粘结剂、 增稠剂和功能助剂以及溶剂构成的体系中均匀且稳定分散, 而且含量过高。 所 述导电粉体的材料包括银粉、 银包铜粉、 镍粉、 碳纳米管中的一种或几种混合 物。 该些材料的所述导电粉体导电性能优异, 赋予所述水性电磁屏蔽涂料优异 的电磁屏蔽性能。 在具体实施例中, 所述导电粉体的重量百分含量可以是 25%、 26%、 27%、 28%、 29%、 30%、 31%、 32%、 33%、 34%、 35%等。
[0034] 所述溶剂为其他组分提供溶剂载体, 并与其他组分作用, 使得所述水性电磁屏 蔽涂料分散体系稳定, 固含量高。 一实施例中, 所述溶剂优选为醇类溶剂。 如 在一实施例中, 相对所述水性电磁屏蔽涂料总重量 100%而言, 所述醇类溶剂包 括无水乙醇 18%-25%、 异丙醇 22%-28%、 丙二醇甲醚醋酸酯 3%-8%。 选用醇类 溶剂, 优选是该混合醇类溶剂具有优异的亲水性, 挥发速度快, 能够有效避免 醇类溶剂腐蚀性过强造成工件裂痕。
[0035] 因此, 所述水性电磁屏蔽涂料通过所含的所述粘结剂、 增稠剂和功能助剂以及 溶剂协同对所述导电粉体作用, 在使得导电粉体能够均匀分散, 而且固含量高 , 如可高达 45%, 而且防沉降效果好, 储存稳定行好, 液固体不分离, 从而使得 所述水性电磁屏蔽涂料所形成的涂层中导电粉体分布均匀而且分布密度高, 较 薄膜厚时电阻较小, 如经测得, 所述水性电磁屏蔽涂料的干膜厚 12pm表面电阻 ^ 0.02Q。 有效提高电磁屏蔽效果, 而且涂层附着力强, 耐化学性优异。 而且优选 的醇类溶剂不会造成工件容易产生裂痕, 所述水性电磁屏蔽涂料施工性佳, 流 平效果好, 排列均匀。
[0036] 相应地, 本发明实施例还提供了上述水性电磁屏蔽涂料的一种制备方法。 所述 水性电磁屏蔽涂料的制备方法包括如下步骤:
[0037] 步骤 SOI : 按照上文所述的水性电磁屏蔽涂料所含组分和所述组分的比例称取 各组分;
[0038] 步骤 S02: 将步骤 S01中称取的各组分进行混料处理。
[0039] 具体地, 上述步骤 S01中水性电磁屏蔽涂料的各组分优选含量和种类如上文所 述, 为了节约篇幅, 在此不再赘述。 [0040] 上述步骤 S02中的混料处理可以选用常规的方式进行处理, 如搅拌, 超声处理 等方式, 使得各组分分散均匀即可。 在一实施例中, 所述步骤 S02中的混料处理 是先将功能助剂加入溶剂中混料处理, 然后水性聚氨酯粘接剂、 增稠剂进行混 料处理, 最后加入导电粉体进行混料处理。 其中, 每个混料处理过程中, 混料 处理可以是常规的混料处理, 如搅拌、 超声等, 只要是能够使得各组分混合均 匀, 均在本发明公开的范围。 当采用搅拌混料处理时, 所述搅拌混料处理是采 用中速 lOOOr/min搅拌。 按照该顺序进行混料处理, 能够使得各组分成分分散和 溶解, 从而形成稳定的分散浆料体系。
[0041] 因此, 所述水性电磁屏蔽涂料的制备方法通过其配制工艺, 使得各组分分散均 匀, 以形成稳定的分散体系。 另外, 其制备方法工艺条件易控, 能够保证制备 的水性电磁屏蔽涂料性能稳定, 而且有效降低了其生产成本, 适于工业化生产
[0042] 正是由于上文所述水性电磁屏蔽涂料的分散体系稳定, 固含量高, 形成的涂层 电阻小, 电磁屏蔽效果好, 涂层附着力强, 而且对被屏蔽的元件无副作用, 有 效扩展了所述水性电磁屏蔽涂料的应用领域。 如在一实施例中, 所述水性电磁 屏蔽涂料可在制备塑料、 树脂、 玻璃、 陶瓷、 木质、 皮革中的任一种材质工件 或电磁屏蔽片中的应用。 具体的是将其涂敷在所述工件需要进行电磁屏蔽的部 位。 因此, 所述工件包括笔记本电脑壳体、 平板电脑壳体、 手机壳体、 电视机 壳体、 无线网卡壳体、 移动基站箱体、 医疗仪器中的任一种。 具体的可以将所 述水性电磁屏蔽涂料涂覆在如笔记本电脑壳体、 平板电脑壳体、 手机壳体、 电 视机壳体、 无线网卡壳体、 移动基站箱体等内表面或外表面上, 从而提高相应 工件对电磁的屏蔽效果, 而且能够有效保证相应电子元件工作和性能的稳定性 。 当在制备电磁屏蔽片中应用时, 可以直接将上文所述的水性电磁屏蔽涂料在 基体上涂层, 干燥后剥离基体, 从而形成电磁屏蔽片。
[0043] 现以水性电磁屏蔽涂料和制备方法为例, 对本发明进行进一步详细说明。
[0044] 实施例 1
[0045] 本实施例提供一种水性电磁屏蔽涂料及其制备方法, 其包括如下重量份的组分 [0046] 水性乳化水分散树脂 7%、 银包铜粉 35%、 甲基乙醇胺 3.5%、 疏水改性丙烯酸缔 合型增稠剂 5.5%、 无水乙醇 18%、 丙二醇甲醚醋酸酯 5%、 异丙醇 26%。 其中, 所述银包铜粉的平均粒径为 7±lpm。
[0047] 本实施例水性电磁屏蔽涂料制备方法, 包括如下步骤:
[0048] S11.称量: 按本实施例 1中称量水性乳化水分散树脂、 银包铜粉、 甲基乙醇胺
、 疏水改性丙烯酸缔合型增稠剂、 无水乙醇、 丙二醇甲醚醋酸酯、 异丙醇等组 分;
[0049] S12.制备浆料: 在匀速搅拌条件下, 依次投入水性乳化水分散树脂、 无水乙醇 、 丙二醇甲醚醋酸酯、 甲基乙醇胺、 疏水改性丙烯酸缔合型增稠剂、 银包铜粉 、 异丙醇组分进行混料处理。
[0050] 实施例 2
[0051] 本实施例提供一种水性电磁屏蔽涂料及其制备方法, 其包括如下重量份的组分
[0052] 水性乳化水分散树脂 10%、 银包铜粉 35%、 甲基乙醇胺 3.5%、 疏水改性丙烯酸 缔合型增稠剂 5.5%、 无水乙醇 20%、 丙二醇甲醚醋酸酯 5%、 异丙醇 21%。 其中 , 所述银包铜粉的平均粒径为 7±lpm。
[0053] 本实施例水性电磁屏蔽涂料制备方法, 包括如下步骤:
[0054] S11.称量: 按本实施例 2中称量水性乳化水分散树脂、 银包铜粉、 甲基乙醇胺
、 疏水改性丙烯酸缔合型增稠剂、 无水乙醇、 丙二醇甲醚醋酸酯、 异丙醇等组 分;
[0055] S12.制备浆料: 在匀速搅拌条件下, 依次投入水性乳化水分散树脂、 无水乙醇 、 丙二醇甲醚醋酸酯、 甲基乙醇胺、 疏水改性丙烯酸缔合型增稠剂、 银包铜粉 、 异丙醇组分进行混料处理。
[0056] 实施例 3
[0057] 本实施例提供一种水性电磁屏蔽涂料及其制备方法, 其包括如下重量份的组分
[0058] 水性乳化水分散树脂 12%、 银包铜粉 36%、 甲基乙醇胺 3.5%、 疏水改性丙烯酸 缔合型增稠剂 5.5%、 无水乙醇 20%、 丙二醇甲醚醋酸酯 5%、 异丙醇 18%。 其中 , 所述银包铜粉的平均粒径为 7±lpm。
[0059] 本实施例水性电磁屏蔽涂料制备方法, 包括如下步骤:
[0060] S11.称量: 按本实施例 3中称量水性乳化水分散树脂、 银包铜粉、 甲基乙醇胺
、 疏水改性丙烯酸缔合型增稠剂、 无水乙醇、 丙二醇甲醚醋酸酯、 异丙醇等组 分;
[0061] S12.制备浆料: 在匀速搅拌条件下, 依次投入水性乳化水分散树脂、 无水乙醇 、 丙二醇甲醚醋酸酯、 甲基乙醇胺、 疏水改性丙烯酸缔合型增稠剂、 银包铜粉 、 异丙醇组分进行混料处理。
[0062] 实施例 4
[0063] 本实施例提供一种水性电磁屏蔽涂料及其制备方法, 其包括如下重量份的组分
[0064] 水性乳化水分散树脂 23%、 银粉 25%、 甲基乙醇胺 3.5%、 疏水改性丙烯酸缔合 型增稠剂 5.5%、 无水乙醇 18%、 丙二醇甲醚醋酸酯 5%、 异丙醇 20%。 其中, 所 述银粉的平均粒径为 2-3—。
[0065] 本实施例水性电磁屏蔽涂料制备方法, 包括如下步骤:
[0066] S11.称量: 按本实施例 4中称量水性乳化水分散树脂、 银粉、 甲基乙醇胺、 疏 水改性丙烯酸缔合型增稠剂、 无水乙醇、 丙二醇甲醚醋酸酯、 异丙醇等组分;
[0067] S12.制备浆料: 在匀速搅拌条件下, 依次投入水性乳化水分散树脂、 无水乙醇 、 丙二醇甲醚醋酸酯、 甲基乙醇胺、 疏水改性丙烯酸缔合型增稠剂、 银粉、 异 丙醇组分进行混料处理。
[0068] 实施例 5
[0069] 本实施例提供一种水性电磁屏蔽涂料及其制备方法, 其包括如下重量份的组分
[0070] 水性乳化水分散树脂 25%、 银粉 28%、 甲基乙醇胺 3.5%、 疏水改性丙烯酸缔合 型增稠剂 5.5%、 无水乙醇 15%、 丙二醇甲醚醋酸酯 5%、 异丙醇 18%。 其中, 所 述银粉的平均粒径为 2-3—。
[0071] 本实施例水性电磁屏蔽涂料制备方法, 包括如下步骤:
[0072] S 11.称量: 按本实施例 5中称量水性乳化水分散树脂、 银粉、 甲基乙醇胺、 疏 水改性丙烯酸缔合型增稠剂、 无水乙醇、 丙二醇甲醚醋酸酯、 异丙醇等组分; [0073] S12.制备浆料: 在匀速搅拌条件下, 依次投入水性乳化水分散树脂、 无水乙醇
、 丙二醇甲醚醋酸酯、 甲基乙醇胺、 疏水改性丙烯酸缔合型增稠剂、 银粉、 异 丙醇组分进行混料处理。
[0074] 实施例 6
[0075] 本实施例提供一种水性电磁屏蔽涂料及其制备方法, 其包括如下重量份的组分
[0076] 水性乳化水分散树脂 27%、 银粉 26.5%、 甲基乙醇胺 3%、 疏水改性丙烯酸缔合 型增稠剂 5%、 无水乙醇 13.5%、 丙二醇甲醚醋酸酯 5%、 异丙醇 20%。 其中, 所 述银粉的平均粒径为 2-3um。
[0077] 其制备方法可以参照实施例 1制备获得。
[0078] 对比例 1
[0079] 本实施例提供一种水性电磁屏蔽涂料, 其包括如下重量份的组分:
[0080] 水性乳化水分散树脂 10%、 银包铜粉 35%、 疏水改性丙烯酸缔合型增稠剂 5.5%
、 无水乙醇 49.5%。 其中, 所述银包铜粉的平均粒径为 7±lpm。
[0081] 对比例 2
[0082] 本实施例提供一种水性电磁屏蔽涂料, 其包括如下重量份的组分:
[0083] 水性乳化水分散树脂 10%、 银包铜粉 35%、 甲基乙醇胺 3.5%、 无水乙醇 51.5%
。 其中, 所述银包铜粉的平均粒径为 7±lpm。
[0084] 涂料形成涂层的相关性能测试
[0085] 将实施例 1~6提供的水性电磁屏蔽涂料和对比例提供的涂料形成涂层后于 65°C 经过 20分烘烤后测试如下表 1中相关性能, 测试结果如下表 1所示。
[0086] 表 1
[]
[] [表 1]
Figure imgf000011_0001
[0087] 由表 1可知, 本发明实施例水性电磁屏蔽涂料形成的涂层电阻小, 电磁屏蔽效 果好, 涂层附着力强, 硬度高。 另外, 也说明了所述水性电磁屏蔽涂料分散体 系均匀。
[0088] 以上所述仅为本发明的较佳实施例而已, 并不用以限制本发明, 凡在本发明的 精神和原则之内所作的任何修改、 等同替换和改进等, 均应包含在本发明的保 护范围之内。

Claims

权利要求书
[权利要求 1] 一种水性电磁屏蔽涂料, 包括如下重量百分比的组分:
水性聚氨酯粘接剂 5%-20%
导电粉体 25%-35%
功能助剂 2%-3%
增稠剂 3%-6%
溶剂 45%-55%。
[权利要求 2] 根据权利要求 1所述的水性电磁屏蔽涂料, 其特征在于: 所述导电粉 体的形状为球形、 片状、 雪花状中的一种或几种混合物。
[权利要求 3] 根据权利要求 2所述的水性电磁屏蔽涂料, 其特征在于: 所述导电粉 体的材料包括银粉、 银包铜粉、 镍粉、 碳纳米管中的一种或几种混合 物。
[权利要求 4] 根据权利要求 1所述的水性电磁屏蔽涂料, 其特征在于: 所述水性聚 氨酯粘接剂包括水性聚氨酯树脂、 水性乳化水分散树脂中的一种或两 种混合物。
[权利要求 5] 根据权利要求 4所述的水性电磁屏蔽涂料, 其特征在于: 所述水性乳 化水分散树脂包括水性丙烯酸乳液、 水性聚氨酯分散体中的一种或两 种混合物。
[权利要求 6] 根据权利要求 1所述的水性电磁屏蔽涂料, 其特征在于: 所述功能助 剂包括甲基乙醇胺类聚合物、 辛基酚聚氧乙烯醚中的一种或两种混合 物。
[权利要求 7] 根据权利要求 1所述的水性电磁屏蔽涂料, 其特征在于: 所述增稠剂 包括疏水改性丙烯酸缔合型增稠剂、 疏水改性碱溶性乳液型增稠剂、 聚合物增稠剂中的一种或几种混合物。
[权利要求 8] 根据权利要求 1所述的水性电磁屏蔽涂料, 其特征在于: 所述溶剂选 用醇类溶剂。
[权利要求 9] 根据权利要求 8所述的水性电磁屏蔽涂料, 其特征在于: 相对所述水 性电磁屏蔽涂料总重量 100%, 所述醇类溶剂包括无水乙醇 18%-25% 、 异丙醇 22%-28%、 丙二醇甲醚醋酸酯 3%-8%。
[权利要求 10] 根据权利要求 1-9任一所述的水性电磁屏蔽涂料, 其特征在于: 所述 水性电磁屏蔽涂料包括如下重量百分比的组分: 水性乳化水分散树脂 7%
银包铜粉 35%
甲基乙醇胺 3.5%
疏水改性丙烯酸缔合型增稠剂 5.5%
无水乙醇 18%
丙二醇甲醚醋酸酯 5%
异丙醇 26%。
[权利要求 11] 根据权利要求 1-9任一所述的水性电磁屏蔽涂料, 其特征在于: 所述 水性电磁屏蔽涂料包括如下重量百分比的组分: 水性乳化水分散树脂 10%
银包铜粉 35%
甲基乙醇胺 3.5%
疏水改性丙烯酸缔合型增稠剂 5.5%
无水乙醇 20%
丙二醇甲醚醋酸酯 5%
异丙醇 21%。
[权利要求 12] 根据权利要求 1-9任一所述的水性电磁屏蔽涂料, 其特征在于: 所述 水性电磁屏蔽涂料包括如下重量百分比的组分: 水性乳化水分散树脂 12%
银包铜粉 36%
甲基乙醇胺 3.5%
疏水改性丙烯酸缔合型增稠剂 5.5%
无水乙醇 20%
丙二醇甲醚醋酸酯 5%
异丙醇 18%。
[权利要求 13] 根据权利要求 1-9任一所述的水性电磁屏蔽涂料, 其特征在于: 所述 水性电磁屏蔽涂料包括如下重量百分比的组分: 水性乳化水分散树脂 23%
银粉 25%
甲基乙醇胺 3.5%
疏水改性丙烯酸缔合型增稠剂 5.5%
无水乙醇 18%
丙二醇甲醚醋酸酯 5%
异丙醇 20%。
[权利要求 14] 根据权利要求 1-9任一所述的水性电磁屏蔽涂料, 其特征在于: 所述 水性电磁屏蔽涂料包括如下重量百分比的组分: 水性乳化水分散树脂 25%
银粉 28%
甲基乙醇胺 3.5%
疏水改性丙烯酸缔合型增稠剂 5.5%
无水乙醇 15%
丙二醇甲醚醋酸酯 5%
异丙醇 18%。
[权利要求 15] 根据权利要求 1-9任一所述的水性电磁屏蔽涂料, 其特征在于: 所述 水性电磁屏蔽涂料的干膜厚 12pm表面电阻 S0.02Q
[权利要求 16] 一种水性电磁屏蔽涂料的制备方法, 其特征在于, 包括如下步骤: 按照权利要求 1- 15任一所述的水性电磁屏蔽涂料所含组分和所述组分 的比例称取各组分;
将称取的各所述组分进行混料处理。
[权利要求 17] 根据权利要求 1- 15任一所述的水性电磁屏蔽涂料在制备塑料、 树脂、 玻璃、 陶瓷、 木质、 皮革中的任一种材质工件或电磁屏蔽片中的应用
[权利要求 18] 根据权利要求 17所述的水性电磁屏蔽涂料的应用, 其特征在于: 所述 工件包括笔记本电脑壳体、 平板电脑壳体、 手机壳体、 电视机壳体、 无线网卡壳体、 移动基站箱体、 医疗仪器中的任一种。
PCT/CN2018/084420 2018-04-25 2018-04-25 水性电磁屏蔽涂料及其制备方法和应用 WO2019205010A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2018/084420 WO2019205010A1 (zh) 2018-04-25 2018-04-25 水性电磁屏蔽涂料及其制备方法和应用
CN201880000336.4A CN108699386A (zh) 2018-04-25 2018-04-25 水性电磁屏蔽涂料及其制备方法和应用

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/084420 WO2019205010A1 (zh) 2018-04-25 2018-04-25 水性电磁屏蔽涂料及其制备方法和应用

Publications (1)

Publication Number Publication Date
WO2019205010A1 true WO2019205010A1 (zh) 2019-10-31

Family

ID=63841474

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/084420 WO2019205010A1 (zh) 2018-04-25 2018-04-25 水性电磁屏蔽涂料及其制备方法和应用

Country Status (2)

Country Link
CN (1) CN108699386A (zh)
WO (1) WO2019205010A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110885623A (zh) * 2019-12-14 2020-03-17 中国电子科技集团公司第三十三研究所 一种墙用电磁屏蔽环保涂料及其制备方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109749105A (zh) * 2018-12-26 2019-05-14 武汉工程大学 一种高导电电磁屏蔽复合材料及其制备方法
CN111439953A (zh) * 2020-04-01 2020-07-24 南京南大波平电子信息有限公司 一种功能型水性吸波涂料及其制备方法
CN114059356A (zh) * 2021-11-19 2022-02-18 福建中裕新材料技术有限公司 一种高性能tpr合成革用浆料的制备方法
CN114058258B (zh) * 2021-11-30 2022-08-05 广东粤港澳大湾区黄埔材料研究院 一种适用于热收缩材料的电磁屏蔽涂料及其制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102702918A (zh) * 2012-06-12 2012-10-03 天长市巨龙车船涂料有限公司 一种导电涂料组合物及其制备方法
CN103205174A (zh) * 2013-03-29 2013-07-17 广东普赛特电子科技股份有限公司 一种电磁屏蔽型导电涂料及其制备方法
CN105153906A (zh) * 2015-09-07 2015-12-16 济南清纳材料科技有限公司 一种水性聚氨酯功能涂料及其制备方法
CN105778673A (zh) * 2014-12-22 2016-07-20 中国中化股份有限公司 一种水性导电涂料及其制备方法和应用
CN107201144A (zh) * 2017-06-28 2017-09-26 常州汉唐文化传媒有限公司 一种导电涂料及其制备方法
EP3202866B1 (en) * 2014-09-30 2018-12-05 Tatsuta Electric Wire & Cable Co., Ltd. Conductive coating material and method for producing shield package using same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4556506A (en) * 1984-12-18 1985-12-03 The Dow Chemical Company Aqueous electroconductive compositions
CN1297617C (zh) * 2003-04-29 2007-01-31 四川大学 水性乳胶型电磁波屏蔽涂料及其制备方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102702918A (zh) * 2012-06-12 2012-10-03 天长市巨龙车船涂料有限公司 一种导电涂料组合物及其制备方法
CN103205174A (zh) * 2013-03-29 2013-07-17 广东普赛特电子科技股份有限公司 一种电磁屏蔽型导电涂料及其制备方法
EP3202866B1 (en) * 2014-09-30 2018-12-05 Tatsuta Electric Wire & Cable Co., Ltd. Conductive coating material and method for producing shield package using same
CN105778673A (zh) * 2014-12-22 2016-07-20 中国中化股份有限公司 一种水性导电涂料及其制备方法和应用
CN105153906A (zh) * 2015-09-07 2015-12-16 济南清纳材料科技有限公司 一种水性聚氨酯功能涂料及其制备方法
CN107201144A (zh) * 2017-06-28 2017-09-26 常州汉唐文化传媒有限公司 一种导电涂料及其制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110885623A (zh) * 2019-12-14 2020-03-17 中国电子科技集团公司第三十三研究所 一种墙用电磁屏蔽环保涂料及其制备方法

Also Published As

Publication number Publication date
CN108699386A (zh) 2018-10-23

Similar Documents

Publication Publication Date Title
WO2019205010A1 (zh) 水性电磁屏蔽涂料及其制备方法和应用
WO2018228407A1 (zh) 一种石墨烯/金属纳米带复合导电油墨及其制备方法和应用
US8673049B2 (en) Low-temperature sintered silver nanoparticle composition and electronic articles formed using the same
CN109749569A (zh) 双组份石墨烯重防腐涂料及其制备方法
CN104867540A (zh) 一种低雾度透明导电薄膜及其制备方法
CN103113786A (zh) 一种石墨烯导电油墨及其制备方法
KR101133466B1 (ko) 태양전지용 저온 건조형 전극 페이스트 조성물 및 이를 이용한 인쇄방법
KR100624316B1 (ko) 도전성 페인트 조성물 및 이를 적용한 전자파 차폐용도전막
Mao et al. Nanocellulose-based reusable liquid metal printed electronics fabricated by evaporation-induced transfer printing
CN111662666B (zh) 一种高频低损耗柔性绝缘胶膜材料及其制备方法和用途
US20210317327A1 (en) Graphene-based conductive ink and preparation thereof
CN114854240B (zh) 一种基于Mxene的导电、吸波、防腐为一体的涂料的制备方法
JP2014125635A (ja) グラビアオフセット印刷用組成物およびグラビアオフセット印刷方法
CN100360620C (zh) 一种屏蔽导电涂料/漆
CN104194580A (zh) 抗静电耐刮涂层以及涂层方法
CN109880479A (zh) 一种双组份水性石墨烯环氧富锌涂料及其制作方法
CN107916064B (zh) 一种吸波粉末涂料及其制备方法
US20170107382A1 (en) Antioxidant conductive copper paste and method for preparing the same
CN108135119B (zh) 一种基于多孔石墨烯-合金硅的电磁屏蔽材料及其制备方法以及涂料
CN113402923B (zh) 用于集成电路的3d激光光敏打印导电墨水及其制备方法
CN102653659B (zh) 基于聚氨酯分散体的导电涂料
CN110769663A (zh) 可回收的电磁屏蔽用液态金属浆料及其制备方法和应用
KR100642467B1 (ko) 도전성 페인트 조성물
KR100642468B1 (ko) 도전성 페인트 조성물 및 이를 이용한 전자파 차폐용 도전막
KR20080055238A (ko) 전자파 차폐용 페인트 조성물

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18916497

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 27/01/2021)

122 Ep: pct application non-entry in european phase

Ref document number: 18916497

Country of ref document: EP

Kind code of ref document: A1