WO2020237412A1 - 塑料底材专用导电涂料及其制备方法和应用与设备 - Google Patents

塑料底材专用导电涂料及其制备方法和应用与设备 Download PDF

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WO2020237412A1
WO2020237412A1 PCT/CN2019/088268 CN2019088268W WO2020237412A1 WO 2020237412 A1 WO2020237412 A1 WO 2020237412A1 CN 2019088268 W CN2019088268 W CN 2019088268W WO 2020237412 A1 WO2020237412 A1 WO 2020237412A1
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parts
tech
modified
conductive
water
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PCT/CN2019/088268
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English (en)
French (fr)
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袁洪青
王立群
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河北比尔尼克新材料科技股份有限公司
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Priority to PCT/CN2019/088268 priority Critical patent/WO2020237412A1/zh
Publication of WO2020237412A1 publication Critical patent/WO2020237412A1/zh

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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
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; 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
    • C09D5/24—Electrically-conducting paints

Definitions

  • the present disclosure relates to the technical field of coatings, in particular to a special conductive coating for plastic substrates, and a preparation method, application and equipment thereof.
  • Conductive coatings are special functional coatings that have developed rapidly with modern science and technology. They refer to new types of functional coatings that can be applied to non-conductive substrates through various spraying methods to enable them to conduct current and dissipate accumulated electrostatic charges. coating. Coatings coated with conductive paints become conductive paints. According to the composition of conductive paints and their conductive mechanism, they can be divided into structural conductive paints (or intrinsic conductive paints) and blended conductive paints (or composite conductive paints) . Blended conductive coatings are currently widely used conductive coatings. It is achieved by adding filler particles with excellent conductivity to the film-forming resin that does not have conductivity to achieve the conductivity of the coating.
  • Conductive coatings have low price, simple process (can be sprayed, scraped, brushed, etc.), and the coating process can be automated without special equipment. It is especially suitable for the coating of various complex shapes.
  • the surface coating of the plastic box of military equipment requires conductivity and good adhesion.
  • the current protective paint for plastic boxes of military equipment has been sprayed with oily paint. A large amount of harmful substances such as benzene and xylene are produced during the spraying process.
  • VOC volatilization seriously exceeds the standard, causing environmental pollution and harm to the human body, which is the main cause of leukemia.
  • the existing paint has general conductivity and adhesion during use after spraying. Therefore, it is of great significance to develop a conductive coating that is conductive, has good adhesion, is environmentally friendly and has low cost.
  • the first purpose of the present disclosure is to provide a special conductive coating for plastic substrates, so as to alleviate the technical problems of general conductive performance, poor adhesion and environmental pollution of conductive coatings for plastics in the prior art.
  • the second objective of the present disclosure is to provide a method for preparing the above-mentioned special conductive coating for plastic substrates, which is simple and easy to operate, and has low manufacturing cost.
  • the third objective of the present disclosure is to provide the application of the above-mentioned special conductive coating for plastic substrates in anti-static and/or electromagnetic shielding.
  • the fourth objective of the present disclosure is to provide a device coated with the above-mentioned special conductive paint for plastic substrates.
  • a special conductive coating for plastic substrates includes a modified water-based acrylic resin, an organic modified polysiloxane, a conductive agent, a water-based color paste, a solvent and an auxiliary agent.
  • the special conductive paint for plastic substrates includes: 45-50 parts of modified waterborne acrylic resin, 9-10 parts of organically modified polysiloxane, 10-11 parts of conductive agent, water-based color 17-18 parts of pulp, 10-15 parts of solvent and 1-12 parts of additives.
  • the special conductive coating for plastic substrates includes: 45-49 parts of modified waterborne acrylic resin, 9.2-9.6 parts of organically modified polysiloxane, 10.3-10.8 parts of conductive agent, and water-based color 17.2-17.8 parts of pulp, 10-14 parts of solvent and 1.2-11.4 parts of additives;
  • the special conductive paint for plastic substrates includes: 47-49 parts of modified waterborne acrylic resin, 9.4-9.6 parts of organically modified polysiloxane, 10.4-10.6 parts of conductive agent, water-based color Pulp 17.4-17.6 parts, solvent 11-13 parts and auxiliary agent 1.4-10.8 parts.
  • the modified waterborne acrylic resin includes epoxy resin modified waterborne acrylate resin, polyurethane acrylate resin, nano-material modified acrylic resin, fluorine modified waterborne acrylate resin or silicone modified waterborne acrylate resin,
  • the modified waterborne acrylic resin includes a fluorine-modified waterborne acrylate resin or a silicone-modified waterborne acrylate resin, and is more preferably a silicone-modified waterborne acrylic resin.
  • the organically modified polysiloxane includes polyether modified polysiloxane, epoxy modified polysiloxane, organic fluorine modified polysiloxane or acrylic resin modified polysiloxane, preferably Preferably, the organically modified polysiloxane includes polyether modified polysiloxane or acrylic resin modified polysiloxane, and is more preferably polyether modified polysiloxane.
  • the conductive agent includes graphene or carbon nanotubes, and is preferably a carbon nanotube conductive agent.
  • the aqueous color paste includes an aqueous organic color paste or an aqueous inorganic color paste, preferably an aqueous organic color paste;
  • the solvent is water, preferably deionized water.
  • the auxiliary agent includes at least one of a dispersant, a leveling agent or a defoaming agent;
  • the dispersant is 3-4 parts, preferably 3.2-3.8 parts, and more preferably 3.4-3.6 parts;
  • the dispersant includes Tech-509, Tech-513 or Tech104, preferably Tech104;
  • the leveling agent is 5-6 parts, preferably 5.2-5.8 parts, more preferably 5.4-5.6 parts;
  • the leveling agent includes Tech-138W, Tech-4285 or Tech-181W, preferably Tech-4285;
  • the defoamer is 1-2 parts, preferably 1.2-1.8 parts, more preferably 1.4-1.6 parts;
  • the defoamer includes Tech-324W, Tech-371W, Tech-420 or Tech-405W, preferably Tech-420 or Tech-405W, and more preferably Tech-420.
  • the preparation method of the above-mentioned special conductive coating for plastic substrates is to mix the modified water-based acrylic resin, organic modified polysiloxane, conductive agent, water-based color paste, solvent and auxiliary agent according to the proportion, to obtain the special plastic substrate Conductive paint.
  • a device coated with conductive paint for the plastic substrate is provided.
  • the special conductive coating for plastic substrates includes: modified water-based acrylic resin, organic modified polysiloxane, conductive agent, water-based color paste, solvent and auxiliary agent.
  • Modified waterborne acrylic resin as a matrix resin can provide coatings with good hardness, aging resistance and heat resistance, etc., and play a basic skeleton function to fill other components, especially for the conductive agent to form a good conductive network inside it, improving The conductivity of the coating.
  • the addition of organically modified polysiloxane can effectively enhance the crosslinking of the paint film and improve the adhesion and aging resistance of the coating.
  • the cost of each component in the present disclosure is low and environmentally friendly, the obtained coating has strong adhesion and can reach the level 1 standard, the VOC volatilization is low and can reach the milligram per liter volatilization level, and the electrical conductivity and hardness have also been greatly improved .
  • the special conductive coating for plastic substrates is applied to the plastic surface in various scenarios to achieve the purpose of anti-static and electromagnetic shielding, which not only reduces the harm of harmful substances, is more environmentally friendly, and has excellent performance. Compared with other coatings, it is more in line with anti-static And special requirements such as electromagnetic shielding.
  • a special conductive coating for plastic substrates including modified water-based acrylic resin, organic modified polysiloxane, conductive agent, water-based color paste, solvent and auxiliary agent.
  • Modified waterborne acrylic resin as a matrix resin can provide coatings with good hardness, aging resistance and heat resistance, etc., and play a basic skeleton function to fill other components, especially for the conductive agent to form a good conductive network inside it, improving The conductivity of the coating.
  • the addition of organically modified polysiloxane can effectively enhance the crosslinking of the paint film and improve the adhesion and aging resistance of the coating.
  • the cost of each component in the present disclosure is low and environmentally friendly, the obtained coating has strong adhesion and can reach the level 1 standard, the VOC volatilization is low and can reach the milligram per liter volatilization level, and the electrical conductivity and hardness have also been greatly improved .
  • the special conductive coating for plastic substrates is applied to the plastic surface in various scenarios to achieve the purpose of anti-static and electromagnetic shielding, which not only reduces the harm of harmful substances, is more environmentally friendly, and has excellent performance. Compared with other coatings, it is more in line with anti-static And special requirements such as electromagnetic shielding.
  • the special conductive coating for plastic substrates includes: 45-50 parts of modified waterborne acrylic resin, 9-10 parts of organically modified polysiloxane, and 10-11 parts of conductive agent, 17-18 parts of water-based color paste, 10-15 parts of solvent and 1-12 parts of auxiliary agent.
  • the modified waterborne acrylic resin is typically but not limited to 45 parts, 46 parts, 47 parts, 48 parts, 49 parts or 50 parts.
  • the organically modified polysiloxane is typically but not limited to 9, 9.2, 9.4, 9.6, 9.8 or 10 parts.
  • the conductive agent is typically but not limited to 10 parts, 10.2 parts, 10.4 parts, 10.6 parts, 10.8 parts or 11 parts.
  • Typical but non-limiting water-based colorants are 17, 17.2, 17.4, 17.6, 17.8, or 18 parts.
  • the solvent is typically but not limited to 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or 15 parts.
  • the adjuvant is typically but not limited to 1, 3, 5, 7, 9, 11 or 12 parts.
  • the special conductive coating for plastic substrates includes: 45-49 parts of modified waterborne acrylic resin, 9.2-9.6 parts of organic modified polysiloxane, and 10.3-10.8 parts of conductive agent, 17.2-17.8 parts of water-based color paste, 10-14 parts of solvent and 1.2-11.4 parts of auxiliary agent.
  • the special conductive coating for plastic substrates includes: 47-49 parts of modified waterborne acrylic resin, 9.4-9.6 parts of organically modified polysiloxane, and 10.4-10.6 parts of conductive agent , 17.4-17.6 parts of water-based color paste, 11-13 parts of solvent and 1.4-10.8 parts of auxiliary agent.
  • the conductivity, adhesion, hardness, flexibility, weather resistance and heat resistance of the coating are further improved.
  • the modified waterborne acrylic resin includes epoxy resin modified waterborne acrylate resin, polyurethane acrylate resin, nanomaterial modified acrylic resin, fluorine modified waterborne acrylate resin, or silicone modified waterborne acrylate resin
  • the modified water-based acrylic resin includes a fluorine-modified water-based acrylate resin or a silicone-modified water-based acrylate resin, more preferably a silicone-modified water-based acrylic resin.
  • Modified waterborne acrylic resin is used as a matrix resin in conductive coatings to play the role of the basic skeleton, and as the main film-forming substance in conductive coatings, it can provide good hardness, flexibility, heat resistance, etc.
  • Silicone modified waterborne acrylic resin has excellent high temperature resistance, UV radiation resistance, oxidation degradation resistance and chemical resistance, uniform film formation and good weather resistance.
  • the organo-modified polysiloxane includes polyether-modified polysiloxane, epoxy-modified polysiloxane, organic fluorine-modified polysiloxane, or acrylic resin-modified polysiloxane
  • the organically modified polysiloxane includes polyether-modified polysiloxane or acrylic resin-modified polysiloxane, more preferably polyether-modified polysiloxane.
  • Organically modified polysiloxane can effectively increase the cross-linking degree of paint film, help paint film formation, and increase the weather resistance and adhesion of the coating.
  • the conductive agent includes graphene or carbon nanotubes, preferably a carbon nanotube conductive agent.
  • the content of the conductive agent in the total weight of the conductive coating dedicated for plastic substrates is scientific and reasonable, which ensures good conductivity while not affecting the mechanical properties of the coating. If the ratio of the conductive agent is too small, the gap between the particles is too large, a good spatial three-dimensional grid structure cannot be formed, and the conductivity is poor. On the contrary, if the proportion of the conductive agent used is too large, while the promoting effect on the conductivity of the coating tends to be stabilized, it will reduce the physical and mechanical properties of the coating. The cost of graphene is too high and the scope of application is limited. Carbon nanotubes have good electrical conductivity. At the same time, because of their large aspect ratio, they are used less in practical applications, reducing the production cost of coatings.
  • the aqueous color paste includes an aqueous organic color paste or an aqueous inorganic color paste, preferably an aqueous organic color paste.
  • the water-based color paste can meet the different requirements of different application scenarios for the color of the paint, while providing a certain degree of dust removal and antifouling effects of the paint.
  • the solvent is water, preferably deionized water.
  • the auxiliary agent includes at least one of a dispersant, a leveling agent, or a defoamer.
  • the dispersant is 3-4 parts, preferably 3.2-3.8 parts, more preferably 3.4-3.6 parts. It should be noted that the dispersing agent is typically but not limited to 3 parts, 3.2 parts, 3.4 parts, 3.6 parts, 3.8 parts or 4 parts.
  • the dispersant can improve the dispersibility of each component, especially helps the conductive agent to form a conductive three-dimensional grid structure.
  • the dispersant includes Tech-509, Tech-513 or Tech104, preferably Tech104.
  • the leveling agent is 5-6 parts, preferably 5.2-5.8 parts, more preferably 5.4-5.6 parts. It should be noted that the leveling agent is typically but not limited to 5 parts, 5.2 parts, 5.4 parts, 5.6 parts, 5.8 parts or 6 parts.
  • the leveling agent helps the coating film to be more smooth, smooth and uniform, and improves the appearance of the coating.
  • the leveling agent includes Tech-138W, Tech-4285 or Tech-181W, preferably Tech-4285.
  • the defoamer in terms of parts by weight, is 1-2 parts, preferably 1.2-1.8 parts, more preferably 1.4-1.6 parts. It should be noted that the defoamer is typically but not limited to 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts or 2 parts.
  • the addition of defoamer can reduce the bubbles of the coating, facilitate construction and contribute to the flatness and conductivity of the final coating.
  • the defoaming agent includes Tech-324W, Tech-371W, Tech-420 or Tech-405W, preferably Tech-420 or Tech-405W, more preferably Tech-420.
  • the present disclosure also provides a method for preparing the above-mentioned special conductive paint for plastic substrates.
  • the modified water-based acrylic resin, organically modified polysiloxane, conductive agent, water-based color paste, solvent and auxiliary agent are uniformly mixed according to the ratio to obtain a plastic substrate.
  • Special conductive coating for materials Specifically, the modified water-based acrylic resin is first added to the solvent, and then the water-based color paste and the organically modified polysiloxane are added, and then other components are added and mixed uniformly to obtain a conductive coating for plastic substrates.
  • the present disclosure also provides the application of the above-mentioned special conductive coating for plastic substrates in anti-static and/or electromagnetic shielding.
  • the conductive paint for plastic substrates provided in the present disclosure has excellent electrical conductivity and adhesion and other mechanical properties, which not only reduces the harm of harmful substances, is more environmentally friendly, but also has excellent performance. Compared with other paints, it is more in line with anti-static and electromagnetic shielding And other special requirements.
  • the present disclosure provides a device coated with the above-mentioned special conductive paint for the plastic substrate.
  • the equipment has good anti-static and electromagnetic shielding functions, strong weather resistance and good quality.
  • Examples 1-3 respectively provide a special conductive coating for plastic substrates, which includes in parts by weight:
  • the above-mentioned silicone-modified waterborne acrylic resin is Tongde 3AH0515W
  • the organically modified polysiloxane is Debon 9521
  • the water-based organic colorant is Orvat CSE602W
  • the dispersant is Tiger Tech 104
  • the leveling agent is Tiger Tech 4285
  • the defoamer is Tiger Tech-420.
  • the embodiment provides a special conductive coating for plastic substrates, which in parts by weight includes: Tongde 1AA0440Y 47 parts, Debon 9521 9.5 parts, Avid CSE602W 17.5 parts, Tiger Tech 104 3.5 parts, Tiger Tech 4285 5.5 parts, Tiger Tech-420 1.5 parts, carbon nanotubes 10.5 parts, deionized water 13 parts.
  • the embodiment provides a special conductive coating for plastic substrates, which in parts by weight includes: Tongde 3AH0515W 47 parts, Debon 9501 9.5 parts, Avid CSE602W 17.5 parts, Tiger Tech 104 3.5 parts, Tiger Tech 4285 5.5 parts, Tiger Tech-420 1.5 parts, carbon nanotubes 10.5 parts, deionized water 13 parts.
  • the embodiment provides a special conductive coating for plastic substrates, which in parts by weight includes: Tongde 3AH0515W 47 parts, Debon 9521 9.5 parts, Avid CSE602W 17.5 parts, Tiger Tech 104 3.5 parts, Tiger Tech 4285 5.5 parts, Tiger Tech-420 1.5 parts, graphene 10.5 parts, deionized water 13 parts.
  • a comparative example provides a special conductive coating for plastic substrates, including: Tongde 3AH0515W 40 parts, Debon 9521 9.5 parts, Avid CSE602W 17.5 parts, Tiger Tech 104 3.5 parts, Tiger Tech 4285 5.5 parts by weight, Tiger Tech-420 1.5 parts, carbon nanotubes 10.5 parts, deionized water 13 parts.
  • a comparative example provides a special conductive coating for plastic substrates, including: Tongde 3AH0515W 47 parts, Debon 9521 5 parts, Avid CSE602W 17.5 parts, Tiger Tech104 3.5 parts, Tiger Tech4285 5.5 parts by weight, Tiger Tech-420 1.5 parts, carbon nanotubes 10.5 parts, deionized water 13 parts.
  • the comparative example provides a special conductive coating for plastic substrates, including: Tongde 3AH0515W 47 parts, Debon 9521 9.5 parts, Avid CSE602W 17.5 parts, Tiger Tech104 3.5 parts, Tiger Tech4285 5.5 parts by weight, Tiger Tech-420 1.5 parts, 15 parts carbon nanotubes, 13 parts deionized water.
  • the comparative example provides a special conductive coating for plastic substrates, including: Tongde 3AH0515W 47 parts, Avid CSE602W 17.5 parts, Tiger Tech104 3.5 parts, Tiger Tech4285 5.5 parts, Tiger Tech-420 1.5 parts by weight. Parts, 10.5 parts of carbon nanotubes, 13 parts of deionized water.
  • Example 6 4mg/L H Level 1 5 ohm Smooth Comparative example 1 400g/L H Level 1 14 ohm Smooth Comparative example 2 350g/L H Level 1 10 ohm Smooth Comparative example 3 450/L H Level 1 10 ohm Smooth Comparative example 4 420g/L HB Level 0 10 ohm Smooth

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Abstract

本公开提供了一种塑料底材专用导电涂料及其制备方法和应用与设备，涉及涂料的技术领域，塑料底材专用导电涂料，包括改性水性丙烯酸树脂、有机改性聚硅氧烷、导电剂、水性色浆、溶剂和助剂。本公开中的各组分的成本较低并且环保，得到的涂料附着力强，可达到1级标准，VOC挥发量低可达到每升挥发量毫克级别，导电性能和硬度也得到了大幅度的提升。将该塑料底材专用导电涂料应用于各种场景实现防静电和电磁屏蔽的目的，不仅降低了有害物质的危害，更加环保，同时性能优异，相较于其他的涂料更符合防静电和电磁屏蔽等特殊要求。

Description

塑料底材专用导电涂料及其制备方法和应用与设备 技术领域
本公开涉及涂料技术领域，尤其是涉及一种塑料底材专用导电涂料及其制备方法和应用与设备。
背景技术
导电涂料是伴随现代科学技术而迅速发展起来的特种功能涂料，是指能够通过各种喷涂方法涂于非导电体底材上，使之具有一定的传导电流和消散累计静电荷能力的新型功能性涂料。涂层涂覆具有导电能力的涂料都成为导电涂料，按导电涂料的组成及其导电机理，可分为结构型导电涂料(或本征导电涂料)和掺和型导电涂料(或复合导电涂料)。掺合型导电涂料是目前应用比较广泛的导电涂料，它是通过在本身不具备导电性能的成膜树脂中掺入具有优异导电性的填料粒子，来最终实现涂层的导电性能。
导电涂料具有价格低廉，工艺简便(可喷涂、刮涂、刷涂等)，无需特殊设备就能实现涂覆工艺的自动化，尤其适合于各种复杂形状表面的涂覆，使高分子材料表面金属化，从而达到防静电或屏蔽电磁波的目的。因此导电涂料在电磁屏蔽方面的应用呈持续增长趋势。随着绿色环保越来越普及，军工行业也越来越注重环保，军工装备塑料箱表面的涂装要求导电，附着力好。现在的军工装备塑料箱防护漆一直喷涂油性涂料，喷涂过程中产生大量苯、二甲苯等有害物质，VOC挥发严重超标，造成环境污染同时对人体造成伤害，是造成白血病的主要因素。此外，现有涂料喷涂后在使用过程导电性能和附着力一般。 因此，开发一种导电、附着力好并且环保、成本低的导电涂料具有重要的意义。
有鉴于此，特提出本公开。
公开内容
本公开的第一目的在于提供一种塑料底材专用导电涂料，以缓解了现有技术中存在的塑料用导电涂料导电性能一般，附着力差和污染环境的技术问题。
本公开的第二目的在于提供上述塑料底材专用导电涂料的制备方法，该方法简单易操作，制作成本低。
本公开的第三目的在于提供上述塑料底材专用导电涂料在防静电和/或电磁屏蔽中的应用。
本公开的第四目的在于提供涂覆有上述塑料底材专用导电涂料的设备。
一种塑料底材专用导电涂料，所述塑料底材专用导电涂料包括改性水性丙烯酸树脂、有机改性聚硅氧烷、导电剂、水性色浆、溶剂和助剂。
进一步的，按重量份数计，所述塑料底材专用导电涂料包括：改性水性丙烯酸树脂45-50份，有机改性聚硅氧烷9-10份，导电剂10-11份，水性色浆17-18份，溶剂10-15份和助剂1-12份。
进一步的，按重量份数计，所述塑料底材专用导电涂料包括：改性水性丙烯酸树脂45-49份，有机改性聚硅氧烷9.2-9.6份，导电剂10.3-10.8份，水性色浆17.2-17.8份，溶剂10-14份和助剂1.2-11.4份；
优选地，按重量份数计，所述塑料底材专用导电涂料包括：改性水性丙烯酸树脂47-49份，有机改性聚硅氧烷9.4-9.6份，导电剂10.4-10.6份，水性色浆17.4-17.6份，溶剂11-13份和助剂1.4-10.8份。
进一步的，所述改性水性丙烯酸树脂包括环氧树脂改性水性丙烯酸酯树 脂、聚氨酯丙烯酸酯树脂、纳米材料改性丙烯酸树脂、氟改性水性丙烯酸酯树脂或有机硅改性水性丙烯酸酯树脂，优选地，改性水性丙烯酸树脂包括氟改性水性丙烯酸酯树脂或有机硅改性水性丙烯酸酯树脂，进一步优选为有机硅改性水性丙烯酸树脂。
进一步的，所述有机改性聚硅氧烷包括聚醚改性聚硅氧烷、环氧改性聚硅氧烷、有机氟改性聚硅氧烷或丙烯酸树脂改性聚硅氧烷，优选地，所述有机改性聚硅氧烷包括聚醚改性聚硅氧烷或丙烯酸树脂改性聚硅氧烷，进一步优选为聚醚改性聚硅氧烷。
进一步的，所述导电剂包括石墨烯或碳纳米管，优选为碳纳米管导电剂。
进一步的，所述水性色浆包括水性有机色浆或水性无机色浆，优选为水性有机色浆；
优选地，所述溶剂为水，优选为去离子水。
进一步的，所述助剂包括分散剂、流平剂或消泡剂中的至少一种；
优选地，按重量份数计，所述分散剂3-4份，优选为3.2-3.8份，进一步优选为3.4-3.6份；
优选地，所述分散剂包括Tech-509、Tech-513或Tech104，优选为Tech104；
优选地，按重量份数计，所述流平剂5-6份，优选为5.2-5.8份，进一步优选为5.4-5.6份；
优选地，所述流平剂包括Tech-138W、Tech-4285或Tech-181W，优选为Tech-4285；
优选地，按重量份数计，所述消泡剂1-2份，优选为1.2-1.8份，进一步优选为1.4-1.6份；
优选地，所述消泡剂包括Tech-324W、Tech-371W、Tech-420或Tech-405W， 优选为Tech-420或Tech-405W，进一步优选为Tech-420。
上述塑料底材专用导电涂料的制备方法，将改性水性丙烯酸树脂、有机改性聚硅氧烷、导电剂、水性色浆、溶剂和助剂按照配比混合均匀，得到所述塑料底材专用导电涂料。
上述塑料底材专用导电涂料在防静电和/或电磁屏蔽中的应用。
一种涂覆有上述塑料底材专用导电涂料的设备。
本公开提供的塑料底材专用导电涂料，包括：改性水性丙烯酸树脂、有机改性聚硅氧烷、导电剂、水性色浆、溶剂和助剂。改性水性丙烯酸树脂作为基体树脂可以提供涂料良好的硬度、耐老化性和耐热性等，起到基本骨架作用使得其他组分填充其中，特别使得导电剂在其内部形成良好的导电网络，提高涂料的导电性能。有机改性聚硅氧烷的添加可以有效增强漆膜交联，提高涂料的附着力和耐老化性。本公开中的各组分成本较低并且环保，得到的涂料附着力强，可达到1级标准，VOC挥发量低可达到每升挥发量毫克级别，导电性能和硬度也得到了大幅度的提升。将该塑料底材专用导电涂料应用于各种场景的塑料表面实现防静电和电磁屏蔽的目的，不仅降低了有害物质的危害，更加环保，同时性能优异，相较于其他的涂料更符合防静电和电磁屏蔽等特殊要求。
具体实施方式
下面将结合实施例对本公开的实施方案进行详细描述，但是本领域技术人员将会理解，下列实施例仅用于说明本公开，而不应视为限制本公开的范围。实施例中未注明具体条件者，按照常规条件或制造商建议的条件进行。
一种塑料底材专用导电涂料，包括改性水性丙烯酸树脂、有机改性聚硅氧烷、导电剂、水性色浆、溶剂和助剂。
改性水性丙烯酸树脂作为基体树脂可以提供涂料良好的硬度、耐老化性和耐热性等，起到基本骨架作用使得其他组分填充其中，特别使得导电剂在其内部形成良好的导电网络，提高涂料的导电性能。有机改性聚硅氧烷的添加可以有效增强漆膜交联，提高涂料的附着力和耐老化性。本公开中的各组分成本较低并且环保，得到的涂料附着力强，可达到1级标准，VOC挥发量低可达到每升挥发量毫克级别，导电性能和硬度也得到了大幅度的提升。将该塑料底材专用导电涂料应用于各种场景的塑料表面实现防静电和电磁屏蔽的目的，不仅降低了有害物质的危害，更加环保，同时性能优异，相较于其他的涂料更符合防静电和电磁屏蔽等特殊要求。
在优选地实施方式中，按重量份数计，塑料底材专用导电涂料包括：改性水性丙烯酸树脂45-50份，有机改性聚硅氧烷9-10份，导电剂10-11份，水性色浆17-18份，溶剂10-15份和助剂1-12份。需要说明的是，按重量份数计，改性水性丙烯酸树脂典型但非限制性的为45份、46份、47份、48份、49份或50份。有机改性聚硅氧烷典型但非限制性的为9份、9.2份、9.4份、9.6份、9.8份或10份。导电剂典型但非限制性的为10份、10.2份、10.4份、10.6份、10.8份或11份。水性色浆典型但非限制性的为17份、17.2份、17.4份、17.6份、17.8份或18份。溶剂典型但非限制性的为10份、11份、12份、13份、14份或15份。助剂典型但非限制性的为1份、3份、5份、7份、9份、11份或12份。
在优选地实施方式中，按重量份数计，塑料底材专用导电涂料包括：改性水性丙烯酸树脂45-49份，有机改性聚硅氧烷9.2-9.6份，导电剂10.3-10.8份，水性色浆17.2-17.8份，溶剂10-14份和助剂1.2-11.4份。
在更优选地实施方式中，按重量份数计，塑料底材专用导电涂料包括：改 性水性丙烯酸树脂47-49份，有机改性聚硅氧烷9.4-9.6份，导电剂10.4-10.6份，水性色浆17.4-17.6份，溶剂11-13份和助剂1.4-10.8份。
通过对塑料底材专用导电涂料中的组分进行优化，进一步提高了涂料的导电性能、附着力、硬度、柔韧性、耐侯性和耐热性。
在一些实施方式中，改性水性丙烯酸树脂包括环氧树脂改性水性丙烯酸酯树脂、聚氨酯丙烯酸酯树脂、纳米材料改性丙烯酸树脂、氟改性水性丙烯酸酯树脂或有机硅改性水性丙烯酸酯树脂，优选地，改性水性丙烯酸树脂包括氟改性水性丙烯酸酯树脂或有机硅改性水性丙烯酸酯树脂，进一步优选为有机硅改性水性丙烯酸树脂。改性水性丙烯酸树脂在导电涂料中作为基体树脂，起到基本骨架的作用，并且作为导电涂料中的主要成膜物质能够提供良好的硬度、柔韧性、耐热性等。有机硅改性水性丙烯酸树脂具有优良的耐高温性、耐紫外光辐射、耐氧化降解性和耐化学品性，成膜均匀并且耐侯性好。
在一些实施方式中，有机改性聚硅氧烷包括聚醚改性聚硅氧烷、环氧改性聚硅氧烷、有机氟改性聚硅氧烷或丙烯酸树脂改性聚硅氧烷，优选地，所述有机改性聚硅氧烷包括聚醚改性聚硅氧烷或丙烯酸树脂改性聚硅氧烷，进一步优选为聚醚改性聚硅氧烷。有机改性聚硅氧烷可以有效提高涂料漆膜的交联度，有助于涂料成膜，增加涂层的耐侯性和附着力。
在一些实施方式中，导电剂包括石墨烯或碳纳米管，优选为碳纳米管导电剂。本公开中，导电剂在塑料底材专用导电涂料总重量中所占的含量科学合理，保证良好导电性能的同时不影响涂料的机械性能。若导电剂所用的比例过小，粒子之间的间隙过大，不能形成良好的空间立体网格结构，导电性能差。相反，若导电剂所用的比例过大，对涂层的导电性能促进作用趋于稳定的同时，反而会降低涂层的物理机械等性能。石墨烯成本太高，应用范围受到限制，碳纳米 管具有良好的导电性，同时由于具有较大的长径比，所以在实际应用中用量少，降低了涂料的生产成本。
在一些实施方式中，水性色浆包括水性有机色浆或水性无机色浆，优选为水性有机色浆。水性色浆可以满足不同应用场景对涂料颜色的不同需求，同时提供涂料一定的除尘和防污的效果。
在一些实施方式中，溶剂为水，优选为去离子水。
在优选地实施方式中，助剂包括分散剂、流平剂或消泡剂中的至少一种。
在优选地实施方式中，按重量份数计，分散剂3-4份，优选为3.2-3.8份，进一步优选为3.4-3.6份。需要说明的是，分散剂典型但非限制性的为3份、3.2份、3.4份、3.6份、3.8份或4份。分散剂可以提高各组分的分散性，特别是有助于导电剂形成导电的三维立体网格结构。
在优选地实施方式中，分散剂包括Tech-509、Tech-513或Tech104，优选为Tech104。
在优选地实施方式中，按重量份数计，流平剂5-6份，优选为5.2-5.8份，进一步优选为5.4-5.6份。需要说明的是，流平剂典型但非限制性的为5份、5.2份、5.4份、5.6份、5.8份或6份。流平剂有利于涂料成膜更加平整、光滑和均匀，改善涂层的外观。
在一些实施方式中，流平剂包括Tech-138W、Tech-4285或Tech-181W，优选为Tech-4285。
在优选地实施方式中，按重量份数计，消泡剂1-2份，优选为1.2-1.8份，进一步优选为1.4-1.6份。需要说明的是，消泡剂典型但非限制性的为1份、1.2份、1.4份、1.6份、1.8份或2份。消泡剂的加入可以减少涂料的气泡，便于施工且有助于最终涂层的平整性和导电性。
在一些实施方式中，消泡剂包括Tech-324W、Tech-371W、Tech-420或Tech-405W，优选为Tech-420或Tech-405W，进一步优选为Tech-420。
本公开又提供上述塑料底材专用导电涂料的制备方法，将改性水性丙烯酸树脂、有机改性聚硅氧烷、导电剂、水性色浆、溶剂和助剂按照配比混合均匀，得到塑料底材专用导电涂料。具体地，先向溶剂中加入改性水性丙烯酸树脂，再加入水性色浆和有机改性聚硅氧烷，之后加入加入其它组分混合均匀，得到塑料底材专用导电涂料。
本公开又提供上述塑料底材专用导电涂料在防静电和/或电磁屏蔽中的应用。本公开提供的塑料底材专用导电涂料具有优异的导电性能和附着力等机械性能，不仅降低了有害物质的危害，更加环保，同时性能优异，相较于其他的涂料更符合防静电和电磁屏蔽等特殊要求。
本公开最后提供一种涂覆有上述塑料底材专用导电涂料的设备。该设备具有良好的防静电和电磁屏蔽功能，耐侯性强，品质好。
为了有助于更清楚的理解本公开的内容，现结合具体的实施例详细介绍如下。但这些实施例仅是范例性的，并不对本公开的范围构成任何限制。
实施例1-3
实施例1-3分别提供一种塑料底材专用导电涂料，按重量份数计包括：
Figure PCTCN2019088268-appb-000001
Figure PCTCN2019088268-appb-000002
上述有机硅改性水性丙烯酸树脂为同德3AH0515W，有机改性聚硅氧烷为德邦9521，水性有机色浆为奥唯特CSE602W，分散剂为泰格Tech104，流平剂为泰格Tech4285，消泡剂为泰格Tech-420。
实施例4
实施例提供一种塑料底材专用导电涂料，按重量份数计包括：同德1AA0440Y 47份，德邦9521 9.5份，奥唯特CSE602W 17.5份，泰格Tech104 3.5份，泰格Tech4285 5.5份，泰格Tech-420 1.5份，碳纳米管10.5份，去离子水13份。
实施例5
实施例提供一种塑料底材专用导电涂料，按重量份数计包括：同德3AH0515W 47份，德邦9501 9.5份，奥唯特CSE602W 17.5份，泰格Tech104 3.5份，泰格Tech4285 5.5份，泰格Tech-420 1.5份，碳纳米管10.5份，去离子水13份。
实施例6
实施例提供一种塑料底材专用导电涂料，按重量份数计包括：同德3AH0515W 47份，德邦9521 9.5份，奥唯特CSE602W 17.5份，泰格Tech104 3.5份，泰格Tech4285 5.5份，泰格Tech-420 1.5份，石墨烯10.5份，去离子水13份。
对比例1
对比例提供一种塑料底材专用导电涂料，按重量份数计包括：同德3AH0515W 40份，德邦9521 9.5份，奥唯特CSE602W 17.5份，泰格Tech104 3.5 份，泰格Tech4285 5.5份，泰格Tech-420 1.5份，碳纳米管10.5份，去离子水13份。
对比例2
对比例提供一种塑料底材专用导电涂料，按重量份数计包括：同德3AH0515W 47份，德邦9521 5份，奥唯特CSE602W 17.5份，泰格Tech104 3.5份，泰格Tech4285 5.5份，泰格Tech-420 1.5份，碳纳米管10.5份，去离子水13份。
对比例3
对比例提供一种塑料底材专用导电涂料，按重量份数计包括：同德3AH0515W 47份，德邦9521 9.5份，奥唯特CSE602W 17.5份，泰格Tech104 3.5份，泰格Tech4285 5.5份，泰格Tech-420 1.5份，碳纳米管15份，去离子水13份。
对比例4
对比例提供一种塑料底材专用导电涂料，按重量份数计包括：同德3AH0515W 47份，奥唯特CSE602W 17.5份，泰格Tech104 3.5份，泰格Tech4285 5.5份，泰格Tech-420 1.5份，碳纳米管10.5份，去离子水13份。
试验例
对上述实施例和对比例中的涂料对军工设备喷涂并进行性能测试。
对VOC挥发量、硬度、附着力、电阻率、外观进行测试。结果如下表所示：
  VOC挥发量 硬度 附着力 电阻率 外观
实施例2 4mg/L H 1级 9欧姆 光泽高
实施例3 4mg/L H 1级 6欧姆 平整
实施例4 4mg/L H 1级 5欧姆 平整光滑
实施例5 4mg/L H 1级 5欧姆 平整光滑
实施例6 4mg/L H 1级 5欧姆 平整光滑
对比例1 400g/L H 1级 14欧姆 平整光滑
对比例2 350g/L H 1级 10欧姆 平整光滑
对比例3 450/L H 1级 10欧姆 平整光滑
对比例4 420g/L HB 0级 10欧姆 平整光滑
尽管已用具体实施例来说明和描述了本公开，然而应意识到，在不背离本公开的精神和范围的情况下可以作出许多其它的更改和修改。因此，这意味着在所附权利要求中包括属于本公开范围内的所有这些变化和修改。

Claims (10)

  1. 一种塑料底材专用导电涂料，其特征在于，所述塑料底材专用导电涂料包括改性水性丙烯酸树脂、有机改性聚硅氧烷、导电剂、水性色浆、溶剂和助剂。
  2. 根据权利要求1所述的塑料底材专用导电涂料，其特征在于，按重量份数计，所述塑料底材专用导电涂料包括：改性水性丙烯酸树脂45-50份，有机改性聚硅氧烷9-10份，导电剂10-11份，水性色浆17-18份，溶剂10-15份和助剂1-12份；
    优选地，按重量份数计，所述塑料底材专用导电涂料包括：改性水性丙烯酸树脂45-49份，有机改性聚硅氧烷9.2-9.6份，导电剂10.3-10.8份，水性色浆17.2-17.8份，溶剂10-14份和助剂1.2-11.4份；
    优选地，按重量份数计，所述塑料底材专用导电涂料包括：改性水性丙烯酸树脂47-49份，有机改性聚硅氧烷9.4-9.6份，导电剂10.4-10.6份，水性色浆17.4-17.6份，溶剂11-13份和助剂1.4-10.8份。
  3. 根据权利要求1或2所述的塑料底材专用导电涂料，其特征在于，所述改性水性丙烯酸树脂包括环氧树脂改性水性丙烯酸酯树脂、聚氨酯丙烯酸酯树脂、纳米材料改性丙烯酸树脂、氟改性水性丙烯酸酯树脂或有机硅改性水性丙烯酸酯树脂，优选地，改性水性丙烯酸树脂包括氟改性水性丙烯酸酯树脂或有机硅改性水性丙烯酸酯树脂，进一步优选为有机硅改性水性丙烯酸树脂。
  4. 根据权利要求1或2所述的塑料底材专用导电涂料，其特征在于，所述有机改性聚硅氧烷包括聚醚改性聚硅氧烷、环氧改性聚硅氧烷、有机氟改性聚硅氧烷或丙烯酸树脂改性聚硅氧烷，优选地，所述有机改性聚硅 氧烷包括聚醚改性聚硅氧烷或丙烯酸树脂改性聚硅氧烷，进一步优选为聚醚改性聚硅氧烷。
  5. 根据权利要求1或2所述的塑料底材专用导电涂料，其特征在于，所述导电剂包括石墨烯或碳纳米管，优选为碳纳米管导电剂。
  6. 根据权利要求1或2所述的塑料底材专用导电涂料，其特征在于，所述水性色浆包括水性有机色浆或水性无机色浆，优选为水性有机色浆；
    优选地，所述溶剂为水，优选为去离子水。
  7. 根据权利要求1或2所述的塑料底材专用导电涂料，其特征在于，所述助剂包括分散剂、流平剂或消泡剂中的至少一种；
    优选地，按重量份数计，所述分散剂3-4份，优选为3.2-3.8份，进一步优选为3.4-3.6份；
    优选地，所述分散剂包括Tech-509、Tech-513或Tech104，优选为Tech104；
    优选地，按重量份数计，所述流平剂5-6份，优选为5.2-5.8份，进一步优选为5.4-5.6份；
    优选地，所述流平剂包括Tech-138W、Tech-4285或Tech-181W，优选为Tech-4285；
    优选地，按重量份数计，所述消泡剂1-2份，优选为1.2-1.8份，进一步优选为1.4-1.6份；
    优选地，所述消泡剂包括Tech-324W、Tech-371W、Tech-420或Tech-405W，优选为Tech-420或Tech-405W，进一步优选为Tech-420。
  8. 权利要求1-7任一项所述的塑料底材专用导电涂料的制备方法，其特征在于，将改性水性丙烯酸树脂、有机改性聚硅氧烷、导电剂、水性色 浆、溶剂和助剂按照配比混合均匀，得到所述塑料底材专用导电涂料。
  9. 权利要求1-7任一项所述的塑料底材专用导电涂料在防静电和/或电磁屏蔽中的应用。
  10. 一种涂覆有权利要求1-7任一项所述塑料底材专用导电涂料的设备。
PCT/CN2019/088268 2019-05-24 2019-05-24 塑料底材专用导电涂料及其制备方法和应用与设备 WO2020237412A1 (zh)

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CN104449010A (zh) * 2014-12-26 2015-03-25 苏州格瑞丰纳米科技有限公司 聚合物/石墨烯抗静电涂料、其制备方法及应用
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