WO2012116495A1 - 一种防静电复合材料、电子设备壳体以及电子设备 - Google Patents

一种防静电复合材料、电子设备壳体以及电子设备 Download PDF

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Publication number
WO2012116495A1
WO2012116495A1 PCT/CN2011/071478 CN2011071478W WO2012116495A1 WO 2012116495 A1 WO2012116495 A1 WO 2012116495A1 CN 2011071478 W CN2011071478 W CN 2011071478W WO 2012116495 A1 WO2012116495 A1 WO 2012116495A1
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Prior art keywords
resin
composite material
antistatic
layer
carbon
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PCT/CN2011/071478
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English (en)
French (fr)
Inventor
何永红
朱泉和
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Hytera Communications Corp Ltd
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Hytera Communications Corp Ltd
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Priority to PCT/CN2011/071478 priority Critical patent/WO2012116495A1/zh
Publication of WO2012116495A1 publication Critical patent/WO2012116495A1/zh
Anticipated expiration legal-status Critical
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073Shielding materials
    • H05K9/0079Electrostatic discharge protection, e.g. ESD treated surface for rapid dissipation of charges
    • 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

Definitions

  • Anti-static composite material is Anti-static composite material, electronic device housing and electronic device
  • the present invention relates to the field of composite materials, and in particular to an antistatic composite material, a workpiece made of the antistatic composite material, an electronic device housing, and an electronic device. Background technique
  • Explosion-proof walkie-talkie refers to a walkie-talkie that can work in an explosive atmosphere.
  • Many components of explosion-proof walkie-talkies require special design to prevent hazards when used in an explosive atmosphere, as compared to conventional walkie-talkies.
  • the surface of the walkie-talkie machine usually needs to be anti-static.
  • the surface resistance of the explosion-proof walkie-talkie should be less than that specified in IEC60079-0 2007.
  • the anti-static treatment of the machine surface of the explosion-proof walkie-talkie generally has the following three methods, namely: using a metal casing as the casing of the walkie-talkie; using a common plastic casing, but spraying an anti-static layer on the surface of the plastic casing Coating; Alternatively, an antistatic plastic is made using a resin composition filled with a conductive filler to achieve an antistatic effect on the surface of the machine.
  • the above three methods used in the prior art have disadvantages that are difficult to overcome by themselves.
  • the metal casing of the explosion-proof walkie-talkie is generally made of stainless steel or aluminum/magnesium alloy.
  • the metal casing needs to be insulated from the internal components.
  • due to the complicated shape of the machine casing of the walkie-talkie it is difficult to shape the casing of stainless steel.
  • the main problem with aluminum/magnesium alloys is that they do not meet the safety requirements for explosion protection (because the exposed aluminum or magnesium alloys are more prone to sparks, see IEC 60079-0 2007), and the surface repainting does not meet the resistance requirements.
  • the anti-static coating is easy to wear during the use of the explosion-proof walkie-talkie. At this time, it is difficult to meet the requirements of anti-static, and it is easy to cause danger.
  • the use of a resin composition filled with a conductive filler to prepare an explosion-proof walkie-talkie housing is a relatively popular technique, and a commonly used conductive filler is a carbon material, a conductive metal material or other organic conductive agent.
  • the problem to be solved by the present invention is to provide an antistatic composite material.
  • the antistatic composite material provided by the invention has both good antistatic properties and good mechanical properties.
  • an antistatic composite material comprising: an antistatic layer formed by curing a first resin composition, and a conductive filler in the first resin composition;
  • the conductive filler in the antistatic layer accounts for the weight percentage of the antistatic layer.
  • the conductive filler is a conductive carbon material and/or a conductive metal material.
  • the conductive carbon material is selected from one or more of carbon fiber, carbon nanotube, graphite, graphene, activated carbon, and carbon black.
  • the conductive metal material is selected from one or more of a stainless steel fiber, a low carbon steel fiber, an aluminum fiber, an aluminum alloy fiber, a magnesium fiber, and a magnesium alloy fiber.
  • the first resin composition is a polyolefin resin, a polystyrene resin, an acrylic resin, a fluororesin, a polyamide resin, a polycarbonate, a polyether resin, a polysulfone resin, a polyacyl group.
  • Imine resin phenolic acid resin, amino resin or unsaturated polyester resin.
  • the second resin composition is a polyolefin resin, a polystyrene resin, an acrylic resin, a fluororesin, a polyamide resin, a polycarbonate, a polyether resin, a polysulfone resin, or a polyacyl group.
  • Imine resin phenolic acid resin, amino resin or unsaturated polyester resin.
  • the present invention also provides a housing for an electronic device, which is made of the composite material according to any one of the above aspects, wherein the antistatic layer is used as an outer layer of the housing, and the insulating support layer is used as the shell.
  • the inner layer of the body is used as the shell.
  • the invention also provides an electronic device comprising a housing of the electronic device.
  • the electronic device is a walkie-talkie.
  • the present invention provides an antistatic composite material comprising an antistatic layer and an insulating support layer composited with the antistatic layer.
  • the antistatic layer in the composite material provided by the invention can make the composite material The material achieves good anti-static effect, and the insulating support layer can make the composite material have good mechanical properties, that is, the composite material provided by the invention can ensure good mechanical properties of the composite material while imparting good antistatic performance.
  • Figure 1 is a schematic illustration of one mode of a composite material provided by the present invention
  • FIG. 2 is a schematic view of an embodiment of a walkie-talkie housing provided by the present invention. detailed description
  • a schematic view of a composite material provided by the present invention includes an antistatic layer 11 and an insulating support layer 12 compounded with the antistatic layer 11 , wherein the antistatic layer is composed of a first resin composition Forming is formed by forming a conductive filler in the first resin composition; and the insulating support layer is formed by curing the second resin composition.
  • the first resin polymer may be a polyolefin resin, a polystyrene resin, an acrylic resin, a fluororesin, a polyamide resin, a polycarbonate, a polyether resin, a polysulfone resin, One or a mixture of two or more of a polyimide resin, a phenolic resin, an amino resin, and an unsaturated polyester resin.
  • polystyrene-based resin examples may be polyethylene resin, polybutene resin, poly-1-butene resin, poly 4-mercapto-1-pentene resin, ethylene-propylene copolymer, ethylene-acetic acid copolymer , ethylene-ethyl acrylate copolymer, but is not limited thereto.
  • poly-glycol-based resin may be a polyvinyl chloride resin, a polyvinyl acetate resin, a polyvinyl alcohol resin, or a polyvinyl acetal resin.
  • the polystyrene resin may be a polystyrene resin, a modified polystyrene resin, or an ABS plastic, but is not limited thereto.
  • acrylic resin may be polydecyl methacrylate resin, decyl acrylate and styrene copolymer resins, decyl acrylate and acrylate copolymers, and poly- ⁇ -chloro acrylate.
  • polyamide-based resin may be an aliphatic polyamide resin, a p-type polyamide and an mp-type polyamide, a poly-m-phenylene isophthalamide resin, a para-polyaramid, a polyparaphenylene Didecanoyltridecylhexamethylenediamine, but is not limited thereto.
  • polycarbonate may be bisphenol A type polycarbonate, halogenated bisphenol A type polycarbonate, polyester polycarbonate, allyl diglycol carbonate, but are not limited thereto.
  • polyether-based resin may be polyfurfural, polyphenylene ether, chlorinated polyether, polyphenylene sulfide, and polyetherketone, but are not limited thereto.
  • the amino resin may be a urea resin or a melamine furfural resin, but are not limited thereto.
  • the first resin composition is filled with a conductive filler, and the conductive filler preferably accounts for 1 to 20% by weight of the antistatic layer, more preferably 3 to 18%, and still more preferably 5 ⁇ 15%, more preferably 8-14%.
  • the conductive filler is preferably a carbon material or a conductive metal material.
  • Specific examples of the carbon material may be selected from one or more of carbon fiber, carbon nanotube, graphite, graphite, activated carbon, and carbon black, but are not limited thereto; the above-mentioned carbon material may be commercially available from the market. Or prepared according to the methods disclosed in the prior art.
  • a specific example of the conductive metal material may be one or more selected from the group consisting of stainless steel fibers, low carbon steel fibers, aluminum fibers, aluminum alloy fibers, copper fibers, copper alloy fibers, lead, and lead alloy fibers.
  • the support layer is formed by curing of a second resin polymer
  • the second resin polymer may be the same as or different from the first resin polymer.
  • the second resin polymer may be a polyolefin resin, a polystyrene resin, an acrylic resin, a fluororesin, a polyamide resin, a polycarbonate, a polyether resin, a polysulfone resin, or a poly One or a mixture of two or more of an imide resin, a phenolic resin, an amino resin, and an unsaturated polyester resin, but is not limited thereto.
  • first resin polymer can be referred to as specific examples of the polyolefin resin, the polystyrene resin, the acrylic resin, the polyamide resin, the polycarbonate, the polyether resin, and the amino resin.
  • the polyolefin resin the polystyrene resin
  • acrylic resin the acrylic resin
  • the polyamide resin the polycarbonate
  • the polyether resin the amino resin
  • a coloring agent a nucleating agent, an antioxidant, a heat stabilizer, a weathering agent, an ultraviolet absorber, a flame retardant, and an antibacterial agent may be added to the first resin composition or the second resin composition.
  • the additive such as a reducing agent or a shrinkage preventing agent is preferably from 0.01% by weight to 10% by weight, more preferably 5% by weight or less, even more preferably 3% by weight or less.
  • an antioxidant such as an organic compound, but is not limited thereto; specific examples of the ultraviolet absorber are, for example, benzotriazole, benzophenone or succinic acid, but are not limited thereto; specific examples of the stabilizer such as organic nickel a compound or a hindered amine or the like, but is not limited thereto; a specific example of the lubricant is a lubricant such as a metal salt of a high fatty acid or a higher fatty acid amide, but is not limited thereto; a specific example of the plasticizer such as phthalic acid a plasticizer such as an ester or a phosphate ester, but is not limited thereto; a specific example of the flame retardant is a flame retardant such as bromide, phosphate or red phosphorus, but is not limited thereto; a specific example of the pigment is talc, An inorganic pigment such as titanium oxide, iron oxide
  • extrusion molding injection molding, curing molding, or the like can be used.
  • molding methods such as photocuring, infrared curing, and ultraviolet curing, it is preferred to use an injection molding method.
  • an overmolding method may be employed, that is, the antistatic layer is first formed, and then the insulating support layer is formed on the antistatic layer; The support layer is insulated, and then the antistatic layer is formed on the insulating support layer.
  • the composite material can also be produced by a method of simultaneously molding the antistatic layer and the insulating support layer.
  • the present invention also provides a housing of an electronic device made of the composite material, and specific examples of the electronic device are, for example, a communication device, a computer, a household appliance, an industrial appliance, an office appliance, etc., but are not limited thereto; Specific examples of the communication device are, for example, a walkie-talkie, a mobile phone, etc., but are not limited thereto. As shown in FIG.
  • a schematic diagram of a housing of an electronic device provided by the present invention includes an antistatic layer 21 and an insulating support layer 22 connected to the antistatic layer, wherein the antistatic layer is external to the housing
  • the insulating support layer serves as an inner layer of the casing, and an electrical connection piece 21a is further disposed at a position where the insulating support layer is exposed outside.
  • the invention also provides an electronic device comprising the above described housing.
  • the antistatic layer in the composite material provided by the invention can make the composite material achieve a good antistatic effect, and the insulating support layer can make the composite material have good mechanical properties, that is, the composite material provided by the invention is The composite material is guaranteed to have good mechanical properties while also imparting good antistatic properties.
  • Carbon material Carbon nanofibers, steam-grown carbon fibers made by Showa Denko;
  • Carbon nanotubes multi-walled carbon nanotubes produced by Nanjing Feimu Electronics Co., Ltd.;
  • Graphene Single-layer graphene oxide produced by Nanjing Feimu Electronics Co., Ltd.;
  • Polyphenylene sulfide PPS-1, linear PPS, melt viscosity 50 Pa. S, oligomer content 0.4% by weight, -SX basis amount 29 ⁇ mol/g;
  • polyamide PA, nylon 66, number average molecular weight is 14,000;
  • Plasticizer triethylene glycol diisooctanoate, commercially available
  • Lubricant 6589 plastic lubricant supplied by Huan Chemical Company.
  • the antistatic layer component and the support layer component were subjected to double injection molding to obtain a composite material, and an antistatic layer having a thickness of 1.5 mm and a support layer having a thickness of 1.6 mm were obtained, and mechanical properties and electrical properties were measured, which are shown in Table 2.
  • Comparative example 1 Comparative example 1
  • the sheet was prepared using a ratio of 81% polyethylene, 16% carbon fiber, 2% antioxidant, and 1% light stabilizer.
  • the ratio of the raw materials of Examples 2 to 8 is shown in Table 1.
  • the performance test results are shown in Table 2.
  • Antistatic layer insulating support layer
  • PPS -1 Carbon Nanofiber: Antioxidant: PPS-1: Antioxidant: Light Stabilizer
  • PPE -1 Carbon black: Antioxidant: Light stable PPE-1: Antioxidant: Light stabilizer
  • HIPS Carbon Nanotubes: Antioxidants: Oxidation HIPS: Antioxidants: Light Stabilizers
  • PEBAX2533 Stainless steel fiber: anti-oxidation
  • Example 1 64 120 2200 3.5X10 6 Comparative Example 1 35 34 1600 2.2X10 6 Example 2 62 105 2103 1.9X10 6 Comparative Example 2 28 28 1450 1.9X10 6 Example 3 56 96 1898 2.5X10 6 Comparative Example 3 31 21 1560 2.5X10 6 Example 4 57 112 1950 1.1X10 6 Comparative Example 4 37 32 1580 1.1X10 6 Example 5 69 95 2100 1.5X10 6 Comparative Example 5 30 22 1360 1.5X10 6 Example 6 60 114 2140 1.8X10 6 Comparison Example 6 29 35 1250 1.8X10 6 Example 7 60 128 1865 2.5X10 6 Comparative Example 7 35 37 1356 2.5X10 6 Example 8 54 98 1868 2.6X10 6 Comparative Example 8 37 27 1542 2.6X10 6 The results of Table 2 indicate that The composite material prepared by the invention has good strength and antistatic property.

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Description

一种防静电复合材料、 电子设备壳体以及电子设备 技术领域
本发明涉及复合材料领域, 具体涉及一种防静电复合材料、 由该防静电复 合材料制成的工件、 电子设备壳体以及电子设备。 背景技术
防爆对讲机是指可以工作在爆炸性气体环境中的对讲机。与普通对讲机相 比,防爆对讲机的很多部件都需要进行特别的设计以防止在在爆炸气体环境中 使用时产生危险。 例如, 对讲机的机器表面通常需要进行防静电处理, IEC60079-0 2007中规定, 防爆对讲机的机器表面电阻应当小于 。
现有技术中,对于防爆对讲机的机器表面的防静电处理一般有以下三种方 法, 分别是: 使用金属外壳作为对讲机的壳体; 使用普通的塑料外壳, 但在塑 料外壳表面喷涂一层防静电涂层; 或者,使用填充有导电填料的树脂组合物制 成防静电塑料来使机器表面达到防静电的效果。但是,现有技术中使用的上述 三种方法都有其自身难以克服的缺点。
目前, 防爆对讲机的金属外壳一般是不锈钢材质或铝 /镁合金材质的外壳, 金属外壳需要与内部器件进行绝缘处理,而由于对讲机的机器外壳形状比较复 杂, 因此不锈钢材质的外壳成型加工比较困难; 铝 /镁合金的主要问题是不符 合防爆的安全要求 (因为棵露的铝合金或镁合金比较容易产生火花, 参见 IEC60079-0 2007 ), 而表面再喷涂油漆又不满足电阻的要求。 当使用普通塑料 作为对讲机的外壳, 表面喷涂防静电涂层时, 在防爆对讲机的使用过程中, 防 静电涂层容易磨损, 此时也难以满足防静电的要求, 容易产生危险。 与上述两 种方法相比,使用填充有导电填料的树脂组合物来制备防爆对讲机的壳体是目 前比较流行的技术,通常使用的导电填料是碳材料、导电金属材料或其他有机 的导电剂。但该种工艺的主要问题是, 由于导电填料的添加量对于材料的韧性 具有重要的影响, 因此当需要精确控制电阻率的时候, 不能很好的平衡材料的 韧性和刚性, 材料要么偏脆, 要么偏软, 对于通讯设备的外壳不适用。 发明内容
本发明要解决的问题在于提供一种防静电复合材料, 与现有技术相比, 本 发明提供的防静电复合材料既具有良好的抗静电性能,而且具有较好的机械性 能。
为了解决以上技术问题, 本发明提供一种防静电复合材料, 包括: 防静电层, 所述防静电层由第一树脂组合物固化形成,在所述第一树脂组 合物中有导电填料;
与所述防静电层复合的绝缘支撑层,所述绝缘支撑层有第二树脂组合物固 化形成。
优选的, 所述防静电层中的导电填料占所述防静电层的重量百分比为
1%〜20%。
优选的, 所述导电填料为导电碳材料和 /或导电金属材料。
优选的, 所述导电碳材料选自碳纤维、碳纳米管、石墨、石墨烯、 活性炭、 炭黑中的一种或多种。
优选的, 所述导电金属材料选自不锈钢纤维、 低碳钢纤维、 铝纤维、 铝合 金纤维、 镁纤维、 镁合金纤维中的一种或多种。
优选的, 所述第一树脂组合物为聚烯烃类树脂、 聚苯乙烯类树脂、 丙烯酸 类树脂、 氟树脂、 聚酰胺类树脂、 聚碳酸酯、 聚醚类树脂、 聚砜类树脂、 聚酰 亚胺类树脂、 酚酸树脂、 氨基树脂或不饱和聚酯树脂。
优选的, 所述第二树脂组合物为聚烯烃类树脂、 聚苯乙烯类树脂、 丙烯酸 类树脂、 氟树脂、 聚酰胺类树脂、 聚碳酸酯、 聚醚类树脂、 聚砜类树脂、 聚酰 亚胺类树脂、 酚酸树脂、 氨基树脂或不饱和聚酯树脂。
本发明还提供一种电子设备的壳体,由以上任一项技术方案所述的复合材 料制成, 所述防静电层作为所述壳体的外层, 所述绝缘支撑层作为所述壳体的 内层。
本发明还提供一种电子设备, 包括所述电子设备的壳体。
优选的, 所述电子设备为对讲机。
本发明提供防静电复合材料,包括防静电层和与所述防静电层复合的绝缘 支撑层。 与现有技术相比, 本发明提供的复合材料中防静电层可以使该复合材 料达到良好的防静电效果, 绝缘支撑层可以使复合材料具有良好的机械性能, 即本发明提供的复合材料在保证复合材料良好机械性能的同时还赋予其良好 的防静电性能。 附图说明
图 1为本发明提供的复合材料的一种方式的示意图;
图 2为本发明提供的对讲机壳体的一种实施方式的示意图。 具体实施方式
为了进一步了解本发明, 下面结合实施例对本发明优选实施方案进行描 述, 但是应当理解, 这些描述只是为进一步说明本发明的特征和优点, 而不是 对本发明权利要求的限制。
如图 1所示, 为本发明提供的复合材料的示意图, 包括防静电层 11和与 所述防静电层 11复合在一起的绝缘支撑层 12, 其中所述防静电层由第一树脂 组合物固化形成,在所述第一树脂组合物中有导电填料; 所述绝缘支撑层有第 二树脂组合物固化形成。
按照本发明 ,所述第一树脂聚合物可以为聚烯烃类树脂、聚苯乙烯类树脂、 丙烯酸类树脂、 氟树脂、 聚酰胺类树脂、 聚碳酸酯、 聚醚类树脂、 聚砜类树脂、 聚酰亚胺类树脂、 酚酸树脂、 氨基树脂、 不饱和聚酯树脂中的一种或两种以上 的混合物。
所述聚烯烃类树脂的具体例子可以为聚乙烯树脂、聚丁烯树脂、聚 1-丁烯 树脂、 聚 4-曱基 -1-戊烯树脂、 乙烯-丙烯共聚物、 乙烯-乙酸共聚物、 乙烯-丙 烯酸乙酯共聚物, 但不限于此。
所述聚乙婦基类树脂的具体例子可以为聚氯乙烯树脂、 聚乙酸乙烯树脂、 聚乙烯醇树脂、聚乙烯醛缩酸树脂。所述聚苯乙烯类树脂可以为聚苯乙烯树脂、 改性聚苯乙烯树脂、 ABS塑料, 但不限于此。
所述丙烯酸类树脂的具体例子可以为聚曱基丙烯酸曱酯树脂、曱基丙烯酸 曱酯与苯乙烯共聚物树脂、 曱基丙烯酸曱酯与丙烯酸酯共聚物、 聚 α -氯代丙 烯酸曱酯, 但不限于此。 所述聚酰胺类树脂的具体例子可以为脂肪族类聚酰胺树脂、 p型聚酰胺和 mp型聚酰胺、 聚间苯二曱酰间苯二胺树脂、 全对位聚芳酰胺、 聚对苯二曱酰 三曱基己二胺, 但不限于此。
所述聚碳酸酯的具体例子可以为双酚 A型聚碳酸酯、 卤代双酚 A型聚碳 酸酯、 聚酯聚碳酸酯、 烯丙基二甘醇碳酸酯, 但不限于此。
所述聚醚类树脂的具体例子可以为聚曱醛、聚苯醚、氯化聚醚、聚苯硫醚、 聚醚酮, 但不限于此。
所述氨基树脂的例子可以为脲醛树脂、 三聚氰胺曱醛树脂, 但不限于此。 按照本发明,在所述第一树脂组合物中填充有导电填料, 所述导电填料优 选占所述防静电层的重量百分比为 1〜20%,更优选为 3〜18%,更优选为 5〜15%, 更优选为 8〜14%。 所述导电填料优选为碳材料或导电金属材料。 对于碳材料 的具体例子, 可以选自碳纤维、 碳纳米管、 石墨、 石墨婦、 活性炭、 炭黑中的 一种或多种,但不限于此; 上述提到的碳材料可以从市场公开销售得到或按照 现有技术公开的方法制备。所述导电金属材料的具体例子可以为导电金属材料 选自不锈钢纤维、 低碳钢纤维、 铝纤维、 铝合金纤维、 铜纤维、 铜合金纤维、 铅、 铅合金纤维中的一种或多种。
按照本发明, 所述支撑层由第二树脂聚合物固化形成, 所述第二树脂聚合 物可以与所述第一树脂聚合物相同,也可以为不同。 所述第二树脂聚合物的具 体例子可以为聚烯烃类树脂、 聚苯乙烯类树脂、 丙烯酸类树脂、 氟树脂、 聚酰 胺类树脂、 聚碳酸酯、 聚醚类树脂、 聚砜类树脂、 聚酰亚胺类树脂、 酚酸树脂、 氨基树脂、 不饱和聚酯树脂中的一种或两种以上的混合物, 但不限于此。 对于 所述聚烯烃类树脂、 聚苯乙烯类树脂、 丙烯酸类树脂、 聚酰胺类树脂、 聚碳酸 酯、 聚醚类树脂、 氨基树脂的具体例子, 可以参照上述第一树脂聚合物中的具 体例子, 但不限于上述已经举出的例子。
按照本发明,还可以在所述第一树脂组合物或所述第二树脂组合物中添加 着色剂、 成核剂、 抗氧化剂、 热稳定剂、 耐候剂、 紫外线吸收剂、 阻燃剂、 抗 菌剂、 收缩防止剂等添加剂, 上述添加剂的量的和优选为 0.01重量%〜10重量 %, 更优选为 5重量%以下, 更优选为 3%重量以下。
按照本发明, 所述抗氧剂的具体例子如受组酚类、含硫化合物类或含磷有 机化合物类等抗氧剂, 但不限于此; 紫外线吸收剂的具体例子如苯并三唑类、 二苯曱酮类或琥珀酸类等,但不限于此; 稳定剂的具体例子如有机镍类或受阻 胺类等, 但不限于此; 润滑剂的具体例子如高脂肪酸的金属盐类、 高级脂肪酰 胺类等润滑剂,但不限于此; 增塑剂的具体例子如邻苯二曱酸酯类或磷酸酯类 等增塑剂,但不限于此; 阻燃剂的具体例子如溴化物、磷酸酯或红磷等阻燃剂, 但不限于此; 所述颜料的具体例子如滑石、 氧化钛、 氧化铁红、 粘土、 硅白、 碳酸钙等无机颜料或偶氮系颜料、酞菁系颜料、碳墨等有机颜料,但不限于此。
对于本发明所述的复合材料的成型方法, 可以使用挤压成型、 注塑成型、 固化成型等。 光固化, 红外光固化和紫外光固化等成型方法, 优选使用注射成 型的方法。采用上述成型方法制备本发明所述的复合材料时, 可以采用二次成 型方法,即先成型所述防静电层,然后在所述防静电层上成型所述绝缘支撑层; 或者先成型所述绝缘支撑层, 然后在所述绝缘支撑层上成型所述防静电层。按 照本发明,也可以采用同时成型所述防静电层和绝缘支撑层的方法制备所述复 合材料。
本发明还提供一种由所述复合材料制成的电子设备的壳体,所述电子设备 的具体例子如通讯设备、 电脑、 家用电器、 工业用电器、 办公电器等, 但不限 于此; 所述通讯设备的具体例子如对讲机,手机等,但不限于此。如图 2所示, 为本发明提供的电子设备的壳体示意图, 包括防静电层 21和与所述防静电层 连接的绝缘支撑层 22, 其中所述防静电层作为所述壳体的外层, 所述绝缘支 撑层作为所述壳体的内层,在所绝缘支撑层露出外面的位置上,还设置有电连 接片 21a。 本发明还提供一种电子设备, 包括上述壳体。
与现有技术相比,本发明提供的复合材料中防静电层可以使该复合材料达 到良好的防静电效果, 绝缘支撑层可以使复合材料具有良好的机械性能, 即本 发明提供的复合材料在保证复合材料良好机械性能的同时还赋予其良好的防 静电性能。
以下以具体实施例说明本发明的效果,但本发明的保护范围不受以下实施 例的限制。
以下实施例中所用原料如下:
( 1 )碳材料: 碳纳米纤维, 昭和电工制造的蒸汽生长碳纤维;
炭黑, lionAgzo Co.,ltd.制造的 KETJENBLACK EC-600JD (下文中简称为 KB);
碳纳米管: 南京斐穆科贸有限公司生产的多壁碳纳米管;
石墨烯: 南京斐穆科贸有限公司生产的单层氧化石墨烯;
(2)导电金属材料: 不锈钢纤维: 美国 RTP360.5 FRPC不锈钢纤维;
(3)聚苯硫醚: PPS-1, 线性的 PPS, 熔融粘度为 50Pa . S, 低聚物量为 0.4重量%, -SX基量为 29 μ mol/g;
(4)聚苯醚: PPE-1, 还原黏度为 0.53dl/g的 PPE;
(5)聚苯乙烯: HIPS, 日本聚苯乙烯株式会社制造的 H0103;
(6)聚丙烯: PP, 熔点 167°C、 MFR=4.6 (g/10分钟);
(7)聚酰胺: PA, 尼龙 66, 数均分子量为 14000;
( 8 )聚对苯二曱酸丁二醇酯 PBT , 商品号为 Duranex。
( 9 )聚酰胺弹性体: ElfAtochem化学公司制 , 商品名为 PEBAX2533。 (10) 聚乙烯, 燕山石化 2200J;
( 11 )抗氧剂 PL-10 北京市化学工业研究院;
( 12) 光稳定剂 770 北京市化学工业研究院;
( 13 ) 氧化铁红 市场上购得;
(14)增塑剂, 三甘醇二异辛酸酯, 市场上购得;
(15) 阻燃剂 FANTONFT-2001M 弹性体 TPE 东莞市凡田科技公司;
(16) 润滑剂: 华恩化工公司提供的 6589塑料润滑剂。
实施例 1
防静电层组分:
81%的聚乙烯、 16%的碳纤维、 2%抗氧剂、 1%的光稳定剂;
支撑层组分:
97%的聚乙烯、 2%抗氧剂、 1%的光稳定剂;
将上述防静电层组分和支撑层组分进行双注射成型得到复合材料,得到厚 度为 1.5mm的防静电层和厚度为 1.6mm的支撑层, 测量机械性能和电性能, 列于表 2。 比较例 1
使用 81%的聚乙烯、 16%的碳纤维、 2%抗氧剂、 1%的光稳定剂的比例制 备片材。
实施例 2〜实施例 8的原料配比见表 1, 性能测试结果见表 2
表 1 实施例 2-实施例 8、 比较例 1-比较例 8的原料配比
防静电层 绝缘支撑层
原料配比 厚度 原料配比 厚度
PPS -1: 碳纳米纤维: 抗氧剂: PPS-1: 抗氧剂: 光稳定剂
实施例 2 1mm 1. 5mm 光稳定剂 =84 :12: 3:1 =96:3:1
比较例 2 原料配比为: PPS-1: 碳纳米纤维: 抗氧剂: 光稳定剂 =84 :12: 3:1 2. 0mm
PPE -1: 炭黑: 抗氧剂: 光稳定 PPE-1: 抗氧剂: 光稳定剂
实施例 3 1.2 mm 1. 5mm 剂 =80: 18: 1:1 =98:1:1
比较例 3 原料配比为: PPE-1: 炭黑: 抗氧剂: 光稳定剂 =80: 18: 1:1 2. 5 mm
HIPS: 碳纳米管: 抗氧剂: 氧化 HIPS: 抗氧剂: 光稳定剂
实施例 4 1.5 mm 1. 5mm 铁红 =91:5:3:1 =96:3:1
比较例 4 原料配比为: HIPS: 碳纳米管: 抗氧剂: 氧化铁红 =91 :5: 3:1 2. 4mm
PP: 石墨烯: 抗氧剂: 光稳定剂 HIPS: 抗氧剂: 氧化铁红
实施例 5 1.3 mm 1. 6mm
=91:7:1:1 =95:2.5:2.5 比较例 5 原料配比为: PP: 石墨烯: 抗氧剂: 光稳定剂 =91 :7: 1:1 2. 2mm
PA: 碳纳米纤维: 抗氧剂: 润滑 PEBAX2533: 抗氧剂: 光稳定 实施例 6 1.4 mm 1. 5mm 剂 =88: 10: 1:1 剂 =96: 1.5:3.5 比较例 6 原料配比为: PA: 碳纳米纤维: 抗氧剂: 润滑剂 =88: 10: 1:1 2. 5 mm
PBT : 不锈钢纤维: 抗氧剂: 润
实施例 7 1.2mm PBT: 抗氧剂: 润滑剂 =95 :3: 2 1. 2 mm 滑剂 =80 :18: 1:1
比较例 7 原料配比为: PBT: 不锈钢纤维: 抗氧剂: 润滑剂 =80:18: 1:1 2.2
PEBAX2533: 不锈钢纤维: 抗氧
实施例 8 1.3mm PBT: 光稳定剂 =97: 1:2 1. 3 mm 剂: 润滑剂 =79: 19: 1:1
比较例 8 原料配比为: PEBAX2533: 不锈钢纤维: 抗氧剂: 润滑剂 =79: 19: 1: 1 1. 3 mm 表 2 实施例 1-实施例 8复合材料性能测试结果
拉伸伸长率 弯曲弹性模
拉伸强度(MPa) 电阻
(%) 量 (MPa)
实施例 1 64 120 2200 3.5X106 比较例 1 35 34 1600 2.2X106 实施例 2 62 105 2103 1.9X106 比较例 2 28 28 1450 1.9X106 实施例 3 56 96 1898 2.5X106 比较例 3 31 21 1560 2.5X106 实施例 4 57 112 1950 1.1X106 比较例 4 37 32 1580 1.1X106 实施例 5 69 95 2100 1.5X106 比较例 5 30 22 1360 1.5X106 实施例 6 60 114 2140 1.8X106 比较例 6 29 35 1250 1.8X106 实施例 7 60 128 1865 2.5X106 比较例 7 35 37 1356 2.5X106 实施例 8 54 98 1868 2.6X106 比较例 8 37 27 1542 2.6X106 表 2的结果表明, 本发明制备的复合材料具备良好的强度和抗静电性能。 本发明提出的一种防静电复合材料已通过实施例进行了描述,相关技术人 员明显能在不脱离本发明内容、精神和范围内对本文所述的石墨烯的制备方法 进行改动或适当变更与组合, 来实现本发明技术。 特别需要指出的是, 所有相 类似的替换和改动对本领域技术人员来说是显而易见的,它们都被视为包括在 本发明的精神、 范围和内容中。

Claims

权 利 要 求
1、 一种防静电复合材料, 其特征在于, 包括:
防静电层, 所述防静电层由第一树脂组合物固化形成,在所述第一树脂组 合物中有导电填料;
与所述防静电层连接的绝缘支撑层,所述绝缘支撑层有第二树脂组合物固 化形成。
2、 根据权利要求 1所述的复合材料, 其特征在于, 所述防静电层中的导 电填料占所述防静电层的重量百分比为 1%〜20%。
3、 根据权利要求 1所述的防静电复合材料, 其特征在于, 所述导电填料 为导电碳材料和 /或导电金属材料。
4、 根据权利要求 3所述的复合材料, 其特征在于, 所述导电碳材料选自 碳纤维、 碳纳米管、 石墨、 石墨烯、 活性炭、 炭黑中的一种或多种。
5、 根据权利要求 4所述的复合材料, 其特征在于, 所述导电金属材料选 自不锈钢纤维、低碳钢纤维、 铝纤维、铝合金纤维、铜纤维、铜合金纤维、铅、 铅合金纤维中的一种或多种。
6、 根据权利要求 1至 5任一项所述的复合材料, 其特征在于, 所述第一 树脂组合物为聚烯烃类树脂、 聚苯乙烯类树脂、 丙烯酸类树脂、 氟树脂、 聚酰 胺类树脂、 聚碳酸酯、 聚醚类树脂、 聚砜类树脂、 聚酰亚胺类树脂、 酚酸树脂、 氨基树脂或不饱和聚酯树脂。
7、 根据权利要求 1至 5任一项所述的复合材料, 其特征在于, 所述第二 树脂组合物为聚烯烃类树脂、 聚苯乙烯类树脂、 丙烯酸类树脂、 氟树脂、 聚酰 胺类树脂、 聚碳酸酯、 聚醚类树脂、 聚砜类树脂、 聚酰亚胺类树脂、 酚酸树脂、 氨基树脂或不饱和聚酯树脂。
8、 一种电子设备的壳体, 其特征在于, 由权利要求 1至 7任一项所述的 复合材料制成, 所述防静电层作为所述壳体的外层, 所述绝缘支撑层作为所述 壳体的内层。
9、 一种电子设备, 其特征在于, 包括权利要求 8所述的壳体。
10、根据权利要求 9所述的电子设备,其特征在于所述电子设备为对讲机。
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