WO2021092714A1 - 一种新型电磁屏蔽复合材料及其制备方法 - Google Patents

一种新型电磁屏蔽复合材料及其制备方法 Download PDF

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WO2021092714A1
WO2021092714A1 PCT/CN2019/116961 CN2019116961W WO2021092714A1 WO 2021092714 A1 WO2021092714 A1 WO 2021092714A1 CN 2019116961 W CN2019116961 W CN 2019116961W WO 2021092714 A1 WO2021092714 A1 WO 2021092714A1
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electromagnetic shielding
composite material
shielding composite
silver
coupling agent
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PCT/CN2019/116961
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English (en)
French (fr)
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聂瑶
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常德鑫睿新材料有限公司
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Priority to PCT/CN2019/116961 priority Critical patent/WO2021092714A1/zh
Publication of WO2021092714A1 publication Critical patent/WO2021092714A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of 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 a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of 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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of 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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride

Definitions

  • the invention relates to the technical field of electromagnetic shielding, in particular to a novel electromagnetic shielding composite material and a preparation method thereof.
  • Electromagnetic shielding is the main technology to suppress electromagnetic interference.
  • the competition in the shielding material market is becoming increasingly fierce.
  • shielding composite materials have received increasing attention from researchers.
  • Many countries have invested a lot of manpower and material resources to conduct in-depth research on electromagnetic shielding materials.
  • the technical problem to be solved by the present invention is to provide a new type of electromagnetic shielding composite material, which has better shielding effectiveness at low frequencies and expands the application range of electromagnetic shielding materials.
  • a new type of electromagnetic shielding composite material using polyvinyl chloride resin, iron fiber, silver-coated copper particles, and coupling agent as raw materials.
  • the weight percentage of each component is as follows:
  • Silver-clad copper particles 10-20% are Silver-clad copper particles 10-20%;
  • Coupling agent 5-8%.
  • novel electromagnetic shielding composite material is in the shape of a film with a thickness of 20-50 ⁇ m.
  • the length-to-diameter ratio of the iron fiber is 100-120:1.
  • the particle size of the silver-coated gold nanoparticles is 200-400 mesh.
  • the coupling agent is a silane coupling agent.
  • the present invention also provides a method for preparing a novel electromagnetic shielding composite material, which includes the following steps:
  • Step S1 Disperse the iron fibers and silver-coated copper particles in a solvent with ultrasonic for 60-120 minutes;
  • Step S2 the dispersed iron fibers and silver-coated copper particles are fully mixed with the melted polyvinyl chloride resin and coupling agent;
  • Step S3 ultrasonic vibration for 60-120min, and then vacuumize under the condition of 10 -2 -10 -3 Pa;
  • Step S4 curing at 80-110°C for 24-48h.
  • the electromagnetic shielding composite conductive film of the present invention is based on polyvinyl chloride resin, filled with a certain amount of iron fibers and silver-coated copper particles to form a conductive grid, has good shielding effectiveness, and has good damping and resistance. Combustion performance. For electromagnetic waves in the frequency range of 1-100MHz, its shielding effectiveness reaches 60dB, which expands the application range of electromagnetic shielding materials.
  • a new type of electromagnetic shielding composite material including the following components by weight percentage:
  • the length-to-diameter ratio of the iron fiber is 100:1; the particle size of the silver-coated gold nanoparticles is 200-400 mesh; the new electromagnetic shielding composite material is in the form of a film with a thickness of 30 ⁇ m; the coupling agent is silane coupling Agent.
  • Step S1 Disperse the iron fibers and silver-coated copper particles in a solvent with ultrasonic for 60-120 minutes;
  • Step S2 the dispersed iron fibers and silver-coated copper particles are fully mixed with the melted polyvinyl chloride resin and coupling agent;
  • Step S3 ultrasonic vibration for 60-120min, and then vacuumize under the condition of 10 -2 -10 -3 Pa;
  • Step S4 curing at 80-110°C for 24-48h.
  • the novel electromagnetic shielding composite material prepared in this embodiment has a shielding performance of 60 dB for electromagnetic waves in the frequency range of 1-100 MHz.
  • a new type of electromagnetic shielding composite material including the following components by weight percentage:
  • the length-to-diameter ratio of the iron fiber is 120:1; the particle size of the silver-coated gold nanoparticles is 200-400 mesh; the new electromagnetic shielding composite material is in the form of a film with a thickness of 50 ⁇ m; the coupling agent is silane coupling Agent.
  • the electromagnetic shielding composite conductive film prepared in this embodiment has a shielding performance of 45 dB for electromagnetic waves in the frequency range of 1-100 MHz.
  • a new type of electromagnetic shielding composite material including the following components by weight percentage:
  • the length-to-diameter ratio of the iron fiber is 120:1; the particle size of the silver-coated gold nanoparticles is 200-400 mesh; the new electromagnetic shielding composite material is in the form of a film with a thickness of 20 ⁇ m; the coupling agent is silane coupling Agent.
  • the electromagnetic shielding composite conductive film prepared in this embodiment has a shielding performance of 40 dB for electromagnetic waves in the frequency range of 1-100 MHz.
  • a new type of electromagnetic shielding composite material including the following components by weight percentage:
  • the length-to-diameter ratio of the iron fiber is 110:1; the particle size of the silver-coated gold nanoparticles is 200-400 mesh; the new electromagnetic shielding composite material is in the form of a film with a thickness of 40 ⁇ m; the coupling agent is silane coupling Agent.
  • the electromagnetic shielding composite conductive film prepared in this embodiment has a shielding performance of 48 dB for electromagnetic waves in the frequency range of 1-100 MHz.
  • the electromagnetic shielding composite conductive film of the present invention is based on polyvinyl chloride resin, filled with a certain amount of iron fibers and silver-coated copper particles to form a conductive grid, has good shielding effectiveness, and has good damping and resistance. Combustion performance. For electromagnetic waves in the frequency range of 1-100MHz, its shielding effectiveness reaches 60dB, which expands the application range of electromagnetic shielding materials.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

涉及一种新型电磁屏蔽复合材料，以聚氯乙烯树脂、铁纤维、银包铜颗粒、偶联剂为原料，各成分重量百分比如下：聚氯乙烯树脂50-60％；铁纤维20-30％；银包铜颗粒10-20％；偶联剂：5-8％。所提供的新型电磁屏蔽复合材料在低频时具有较好的屏蔽效能，扩展了电磁屏蔽材料的应用范围。还提供一种新型电磁屏蔽复合材料的制备方法。

Description

一种新型电磁屏蔽复合材料及其制备方法 技术领域
本发明涉及电磁屏蔽技术领域，特别涉及一种新型电磁屏蔽复合材料及其制备方法。
背景技术
电磁屏蔽是抑制电磁干扰的主要技术，屏蔽材料市场竞争日趋激烈，屏蔽复合材料作为一种新型屏蔽材料，日益收到研究者们的高度重视。各国均投入了大量的人力和物力对电磁屏蔽材料进行深入研究。
目前的复合材料大多侧重于高频段电磁波的屏蔽，虽然获得了较好的屏蔽效果，但应用在低频时，屏蔽效果较差，不能达到环境要求的屏蔽效能。
鉴于此，有必要提供一种低频电磁屏蔽材料解决上述技术问题。
发明内容
本发明要解决的技术问题是提供一种新型电磁屏蔽复合材料，其在低频时具有较好的屏蔽效能，扩展了电磁屏蔽材料的应用范围。
为了解决上述问题，本发明的技术方案如下：
一种新型电磁屏蔽复合材料，以聚氯乙烯树脂、铁纤维、银包铜颗粒、偶联剂为原料，各成分重量百分比如下：
聚氯乙烯树脂 50-60％；
铁纤维 20-30％；
银包铜颗粒 10-20％；
偶联剂：5-8％。
进一步地，所述新型电磁屏蔽复合材料呈膜状，其厚度为20-50μm。
进一步地，所述铁纤维的长径比是100-120:1。
进一步地，所述银包金纳米颗粒的粒径200-400目。
进一步地，所述偶联剂为硅烷偶联剂。
本发明还提供一种新型电磁屏蔽复合材料的制备方法，包括如下步骤：
步骤S1，将铁纤维、银包铜颗粒在溶剂中用超声波分散60-120min；
步骤S2，分散后的铁纤维、银包铜颗粒与熔融后的聚氯乙烯树脂和偶联剂充分混合；
步骤S3，超声波震荡60-120min，然后在真空度为10 -2-10 -3Pa条件下抽真空；
步骤S4，在80-110℃条件下固化24-48h。
本发明提供的新型电磁屏蔽复合材料及其制备方法，有益效果在于：
本发明的电磁屏蔽复合导电薄膜，以聚氯乙烯树脂为基材，在其中填充一定量的铁纤维和银包铜颗粒，形成导电网格，具有良好的屏蔽效能，并具有良好的阻尼和阻燃性能。对于1-100MHz频率范围内的电磁波，其屏蔽效能达60dB，扩展了电磁屏蔽材料的应用范围。
具体实施方式
为了使本技术领域的人员更好地理解本发明实施例中的技术方案，并使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图对本发明的具体实施方式作进一步的说明。
在此需要说明的是，对于这些实施方式的说明用于帮助理解本发明，但并不构成对本发明的限定。此外，下面所描述的本发明各个实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
实施例1
一种新型电磁屏蔽复合材料，包括按重量百分比计的如下成分：
聚氯乙烯树脂60％，铁纤维20％，银包铜颗粒15％，偶联剂5％。
本实施例中，铁纤维的长径比是100:1；银包金纳米颗粒的粒径200-400目；新型电磁屏蔽复合材料呈膜状，其厚度为30μm；偶联剂为硅烷偶联剂。
本实施例的电磁屏蔽复合导电薄膜的制备方法，包括如下步骤：
步骤S1，将铁纤维、银包铜颗粒在溶剂中用超声波分散60-120min；
步骤S2，分散后的铁纤维、银包铜颗粒与熔融后的聚氯乙烯树脂和偶联剂充分混合；
步骤S3，超声波震荡60-120min，然后在真空度为10 -2-10 -3Pa条件下抽真 空；
步骤S4，在80-110℃条件下固化24-48h。
本实施例制备得到的新型电磁屏蔽复合材料，对于1-100MHz频率范围内的电磁波，其屏蔽性能为60dB。
实施例2
一种新型电磁屏蔽复合材料，包括按重量百分比计的如下成分：
聚氯乙烯树脂50％，铁纤维30％，银包铜颗粒12％，偶联剂8％。
本实施例中，铁纤维的长径比是120:1；银包金纳米颗粒的粒径200-400目；新型电磁屏蔽复合材料呈膜状，其厚度为50μm；偶联剂为硅烷偶联剂。
本实施例的电磁屏蔽复合材料的制备方法参照实施例1，在此不做赘述。
本实施例制备得到的电磁屏蔽复合导电薄膜，对于1-100MHz频率范围内的电磁波，其屏蔽性能为45dB。
实施例3
一种新型电磁屏蔽复合材料，包括按重量百分比计的如下成分：
聚氯乙烯树脂52％，铁纤维22％，银包铜颗粒20％，偶联剂6％。
本实施例中，铁纤维的长径比是120:1；银包金纳米颗粒的粒径200-400目；新型电磁屏蔽复合材料呈膜状，其厚度为20μm；偶联剂为硅烷偶联剂。
本实施例的电磁屏蔽复合材料的制备方法参照实施例1，在此不做赘述。
本实施例制备得到的电磁屏蔽复合导电薄膜，对于1-100MHz频率范围内的电磁波，其屏蔽性能为40dB。
实施例4
一种新型电磁屏蔽复合材料，包括按重量百分比计的如下成分：
聚氯乙烯树脂57％，铁纤维26％，银包铜颗粒10％，偶联剂7％。
本实施例中，铁纤维的长径比是110:1；银包金纳米颗粒的粒径200-400目；新型电磁屏蔽复合材料呈膜状，其厚度为40μm；偶联剂为硅烷偶联剂。
本实施例的电磁屏蔽复合材料的制备方法参照实施例1，在此不做赘述。
本实施例制备得到的电磁屏蔽复合导电薄膜，对于1-100MHz频率范围内的 电磁波，其屏蔽性能为48dB。
本发明的电磁屏蔽复合导电薄膜，以聚氯乙烯树脂为基材，在其中填充一定量的铁纤维和银包铜颗粒，形成导电网格，具有良好的屏蔽效能，并具有良好的阻尼和阻燃性能。对于1-100MHz频率范围内的电磁波，其屏蔽效能达60dB，扩展了电磁屏蔽材料的应用范围。
本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其它实施例的不同之处。
以上结合附图对本发明的实施方式作出详细说明，但本发明不局限于所描述的实施方式。对本领域的技术人员而言，在不脱离本发明的原理和精神的情况下对这些实施例进行的多种变化、修改、替换和变型均仍落入在本发明的保护范围之内。

Claims (6)

  1. 一种新型电磁屏蔽复合材料，其特征在于，以聚氯乙烯树脂、铁纤维、银包铜颗粒、偶联剂为原料，各成分重量百分比如下：
    聚氯乙烯树脂50-60％；
    铁纤维20-30％；
    银包铜颗粒10-20％；
    偶联剂：5-8％。
  2. 根据权利要求1所述的新型电磁屏蔽复合材料，其特征在于，所述新型电磁屏蔽复合材料呈膜状，其厚度为20-50μm。
  3. 根据权利要求1所述的新型电磁屏蔽复合材料，其特征在于，所述铁纤维的长径比是100-120:1。
  4. 根据权利要求1所述的新型电磁屏蔽复合材料，其特征在于，所述银包金纳米颗粒的粒径200-400目。
  5. 根据权利要求1所述的新型电磁屏蔽复合材料，其特征在于，所述偶联剂为硅烷偶联剂。
  6. 一种如权利要求1所述的新型电磁屏蔽复合材料的制备方法，其特征在于，包括如下步骤：
    步骤S1，将铁纤维、银包铜颗粒在溶剂中用超声波分散60-120min；
    步骤S2，分散后的铁纤维、银包铜颗粒与熔融后的聚氯乙烯树脂和偶联剂充分混合；
    步骤S3，超声波震荡60-120min，然后在真空度为10 -2-10 -3Pa条件下抽真空；
    步骤S4，在80-110℃条件下固化24-48h。
PCT/CN2019/116961 2019-11-11 2019-11-11 一种新型电磁屏蔽复合材料及其制备方法 WO2021092714A1 (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0758490A (ja) * 1993-08-11 1995-03-03 Kitagawa Ind Co Ltd 電磁波シールド材
CN103304910A (zh) * 2013-06-24 2013-09-18 苏州新区佳合塑胶有限公司 一种高强度的聚苯乙烯导电塑料及其制备方法
CN107325383A (zh) * 2017-08-29 2017-11-07 德阳力久云智知识产权运营有限公司 一种电缆复合屏蔽材料及其制备方法
CN107573611A (zh) * 2016-05-26 2018-01-12 石策略 一种应用于抗干扰电缆的聚氯乙烯树脂
CN107652688A (zh) * 2017-10-09 2018-02-02 平湖阿莱德实业有限公司 一种电磁屏蔽用高稳定性导电弹性体及其制备方法
CN108912546A (zh) * 2018-07-13 2018-11-30 浙江同正管道技术有限公司 一种低频电磁屏蔽pvc管材及其制备方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0758490A (ja) * 1993-08-11 1995-03-03 Kitagawa Ind Co Ltd 電磁波シールド材
CN103304910A (zh) * 2013-06-24 2013-09-18 苏州新区佳合塑胶有限公司 一种高强度的聚苯乙烯导电塑料及其制备方法
CN107573611A (zh) * 2016-05-26 2018-01-12 石策略 一种应用于抗干扰电缆的聚氯乙烯树脂
CN107325383A (zh) * 2017-08-29 2017-11-07 德阳力久云智知识产权运营有限公司 一种电缆复合屏蔽材料及其制备方法
CN107652688A (zh) * 2017-10-09 2018-02-02 平湖阿莱德实业有限公司 一种电磁屏蔽用高稳定性导电弹性体及其制备方法
CN108912546A (zh) * 2018-07-13 2018-11-30 浙江同正管道技术有限公司 一种低频电磁屏蔽pvc管材及其制备方法

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