CN115477813A - 一种用于电磁屏蔽的pp基复合材料及其制备方法 - Google Patents
一种用于电磁屏蔽的pp基复合材料及其制备方法 Download PDFInfo
- Publication number
- CN115477813A CN115477813A CN202211355163.2A CN202211355163A CN115477813A CN 115477813 A CN115477813 A CN 115477813A CN 202211355163 A CN202211355163 A CN 202211355163A CN 115477813 A CN115477813 A CN 115477813A
- Authority
- CN
- China
- Prior art keywords
- composite material
- electromagnetic shielding
- based composite
- foaming agent
- antioxidant
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000004743 Polypropylene Substances 0.000 claims abstract description 62
- -1 polypropylene Polymers 0.000 claims abstract description 39
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 38
- 239000004917 carbon fiber Substances 0.000 claims abstract description 38
- 239000004088 foaming agent Substances 0.000 claims abstract description 29
- 229920001155 polypropylene Polymers 0.000 claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 25
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 24
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 24
- 239000004964 aerogel Substances 0.000 claims abstract description 21
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004611 light stabiliser Substances 0.000 claims abstract description 15
- 239000000314 lubricant Substances 0.000 claims abstract description 13
- 239000012745 toughening agent Substances 0.000 claims abstract description 11
- 238000005187 foaming Methods 0.000 claims abstract description 9
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 13
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- 238000001746 injection moulding Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 9
- 229920000573 polyethylene Polymers 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 5
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 2
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 2
- 239000004156 Azodicarbonamide Substances 0.000 claims description 2
- 229920002943 EPDM rubber Polymers 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 2
- 239000001099 ammonium carbonate Substances 0.000 claims description 2
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 2
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 2
- PWWSSIYVTQUJQQ-UHFFFAOYSA-N distearyl thiodipropionate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCCCCCC PWWSSIYVTQUJQQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 19
- 239000000463 material Substances 0.000 description 10
- 238000005469 granulation Methods 0.000 description 8
- 230000003179 granulation Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0085—Use of fibrous compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/16—Ethene-propene or ethene-propene-diene copolymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
本发明涉及聚合物改性和加工技术领域,特别是一种用于电磁屏蔽的PP基复合材料及其制备方法,由下列重量百分比的原料组成:57.2‑73%PP颗粒树脂、3‑5%相容剂、18‑25%导电电磁屏蔽剂、4‑8%发泡剂母粒、1‑3%增韧剂、0.2‑0.4%抗氧剂、0.6‑1.0%润滑剂、0.2‑0.4%光稳定剂。本发明使用碳纤维和石墨烯气凝胶复配方案,并结合微发泡工艺,制备的聚丙烯复合材料具有良好的力学性能,同时兼顾很高的电磁屏蔽能力。
Description
技术领域
本发明涉及聚合物改性和加工技术领域,特别是一种电磁屏蔽的 PP基复合材料及其制备方法。
背景技术
随着信息技术的飞速发展,电子设备、通信设施和智能无线网络设备得到广泛应用。尤其是5G技术取得了前所未有的成就,这种电磁波技术的应用不仅会对电子设备的运行造成干扰,还会对人体健康和环境造成危害。传统的金属材料具有较高的导电性和优良的电磁干扰屏蔽性能,但存在密度高、耐腐蚀差,加工工艺复杂等缺点,因此逐渐被一些填充复合型电磁屏蔽材料所替代。
碳纤维作为电磁屏蔽填充材料的研究报道已经有很多,单纯使用碳纤维很难达使得复合材料很高的屏蔽能力。一般需要碳纤维表面电镀金属层或者与其他金属颗粒复配提升电磁屏蔽能力。电镀工艺可能存在环境污染,加入金属颗粒或者碳纳米管等会导致材料力学性能的下降。目前很多专利报道的填充型复合材料屏蔽效能都是在30-50DB,很难满足商业化要求60DB屏蔽效能以上的要求。
石墨烯作为一种先进碳材料,具有优异的导电性、电子效应和热性能。石墨烯气凝胶具有高孔隙率、低密度、大比表面积和高压缩性。其内部的多孔结构和三维网状结构解决了二维石墨烯中石墨烯片层易团聚、高电导率和阻抗失配等现象,有利于提高材料微波吸收性能。
发明内容
本发明需要解决的技术问题是提供一种优异力学性能,兼顾高电磁屏蔽的PP基复合材料及其制备方法来解决上述问题。
为解决上述技术问题,本发明所采取的技术方案是:一种用于电磁屏蔽的PP基复合材料,由下列重量百分比的原料组成:
作为本发明进一步的方案,所述PP颗粒树脂为均聚聚丙烯或共聚聚丙烯一种或两种组合物,其熔体流动速率为10-60g/10min,所述相容剂为PP-g-MAH,其接枝率为0.8-1.5%。
作为本发明进一步的方案,所述导电电磁屏蔽剂为碳纤维和石墨烯气凝胶两种的混合物,其中碳纤维是连续碳纤维或短切碳纤维中的一种,石墨烯气凝胶含量占比为4-8%。
作为本发明进一步的方案,所述发泡剂母粒为发泡剂载体将发泡剂和发泡助剂包裹在内部制备而成,其中发泡剂载体为聚乙烯、乙烯 -醋酸乙烯共聚物、三元乙丙橡胶、乙烯-丁烯共聚物、乙烯-辛烯共聚物中的一种或几种组合,发泡剂为碳酸氢钠、碳酸氢铵、偶氮二甲酰胺中的一种或几种组合,发泡助剂为柠檬酸、氧化锌、硬脂酸锌中的一种或几种组合。
作为本发明进一步的方案,所述发泡剂载体为聚乙烯,发泡剂为碳酸氢钠,发泡助剂为柠檬酸。
作为本发明进一步的方案,所述增韧剂为乙烯-辛烯的共聚物,密度为0.86-0.90g/cm3,其熔体流动速率为0.5-10g/10min;抗氧剂包括主抗氧剂和辅抗氧剂,其中主抗氧剂为1010、3114和DSTP中的一种或几种;所述的辅抗氧剂为168和618中的一种或两种。
作为本发明进一步的方案,所述润滑剂为聚乙烯蜡、EBS或者硅酮中的一种或几种;光稳定剂为PP类载体的受阻胺类光稳定剂。
一种用于电磁屏蔽的PP基复合材料的制备方法,具体步骤如下:
步骤一,将碳纤维和发泡剂母粒以外的各原料组分在高速混合器中混合5分钟,然后加入双螺杆挤出机中主喂料口,同时将碳纤维加入纤维口中,然后经过熔融挤出后冷却造粒,制成改性聚丙烯复合材料,其挤出温度为190-230℃,螺杆转速为250-350r/min,整个挤出过程的停留时间为1-2min;
步骤二,将上述步骤制备的改性聚丙烯复合材料与发泡剂母粒混合均匀,采用注塑成型方法,在二次开模条件下制备具有高电磁屏蔽的PP基复合材料。
由于本发明采用如上技术方案,本发明具有的优点和积极效果是:
1、本发明使用碳纤维与石墨烯气凝胶复配方案,因为石墨烯气凝胶高孔隙率和高压缩性的三维网络结构,用其部分替代碳纤维提升复合材料的电磁屏蔽效能,同时改善碳纤维改性聚丙烯复合材料的浮纤问题;
2、本发明利用发泡剂母粒在注塑成型过程中产生的惰性气体,可以降低碳纤维在基体中发生缠绕打结的情况,同时可以提升碳纤维和石墨烯气凝胶在聚丙烯材料的分散性,利用碳纤维与石墨烯气凝胶之间的界面,使得电磁波多次反射并衰减,从而提升复合材料的电磁屏蔽效能。同时碳纤维增强微发泡后的基体树脂的强度,防止发生破孔问题。不需要使用高熔体强度的聚丙烯基材,增加了基材的通用性;
3、本发明制备的聚丙烯复合材料具有良好的力学性能,同时兼顾优秀的电磁屏蔽性能,可应用于5G通讯领域有高电磁屏蔽要求的产品。
综上,本发明使用碳纤维和石墨烯气凝胶复配方案,并结合微发泡工艺,保证了复合材料具有良好的力学性能,同时兼顾很高的电磁屏蔽能力。
具体实施方式
下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整的描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护范围。
在实施例及对比例复合材料配方中,所用的PP颗粒树脂为天津中沙公司生产的PP511MK40T和上海石化生产的M1200HS;相容剂PP-g-MAH选用宁波能之光公司生产的GMP200A,接枝率为1.0%;碳纤维为中复神鹰公司生产的连续碳纤维SYT49S或者AmosComposites 公司生产CM70CP006-PEY;石墨烯气凝胶自制;发泡剂母粒为科莱恩公司生产的产品;所用的增韧剂为陶氏公司生产的Engage 8180。抗氧剂为BASF公司生产的1010和168,混合使用时两者质量比为1:1;润滑剂为聚乙烯蜡、硅酮或EBS,光稳定剂为UV3808PP5。
本申请的实施例1,将72.9%的M1200HS、3%相容剂、4%石墨烯气凝胶、1%增韧剂、0.3%抗氧剂、0.6%润滑剂硅酮、0.2%的光稳定剂在高速混合器中混合5分钟,加入双螺杆挤出机中主喂料口,同时将 14%的连续碳纤维加入纤维口中,然后经过熔融挤出后冷却造粒,制成改性聚丙烯复合材料,其挤出温度为190-230℃,螺杆转速为 250-350r/min。将制备好的改性聚丙烯复合材料与4%发泡剂母粒混合均匀,采用注塑成型方法,在二次开模条件下制备具有电磁屏蔽的 PP基复合材料,并制备标准测试样条。
本申请的实施例2,将66.7%的PP511MK40T、4%相容剂、6%石墨烯气凝胶、2%增韧剂、0.3%抗氧剂、0.8%润滑剂聚乙烯蜡、0.2%光稳定剂在高速混合器中混合5分钟,加入双螺杆挤出机中主喂料口,同时将15%短切碳纤维加入纤维口中,然后经过熔融挤出后冷却造粒,制成改性聚丙烯复合材料,其挤出温度为190-230℃,螺杆转速为 250-350r/min。将制备好的改性聚丙烯复合材料与5%发泡剂母粒混合均匀,采用注塑成型方法,在二次开模条件下制备具有电磁屏蔽的 PP基复合材料,并制备标准测试样条。
本申请的实施例3,将47%的PP511MK40T、12.5%的M1200HS、5%相容剂、8%石墨烯气凝胶、3%增韧剂、0.3%抗氧剂、1.0%润滑剂EBS、 0.2%光稳定剂在高速混合器中混合5分钟,加入双螺杆挤出机中主喂料口,同时将17%连续碳纤维加入纤维口中,然后经过熔融挤出后冷却造粒,制成改性聚丙烯复合材料,其挤出温度为190-230℃,螺杆转速为250-350r/min。将制备好的改性聚丙烯复合材料与6%发泡剂母粒混合均匀,采用注塑成型方法,在二次开模条件下制备具有电磁屏蔽的PP基复合材料,并制备标准测试样条。
本申请的实施例4,将47%的PP511MK40T、12.5%的M1200HS、5%相容剂、5%石墨烯气凝胶、3%增韧剂、0.3%抗氧剂、1.0%润滑剂EBS、 0.2%光稳定剂在高速混合器中混合5分钟,加入双螺杆挤出机中主喂料口,同时将20%连续碳纤维加入纤维口中,然后经过熔融挤出后冷却造粒,制成改性聚丙烯复合材料,其挤出温度为190-230℃,螺杆转速为250-350r/min。将制备好的改性聚丙烯复合材料与6%发泡剂母粒混合均匀,采用注塑成型方法,在二次开模条件下制备具有电磁屏蔽的PP基复合材料,并制备标准测试样条。
本申请的实施例5,将45%的PP511MK40T、12.5%的M1200HS、5%相容剂、8%石墨烯气凝胶、3%增韧剂、0.3%抗氧剂、1.0%润滑剂EBS、 0.2%光稳定剂在高速混合器中混合5分钟,加入双螺杆挤出机中主喂料口,同时将17%连续碳纤维加入纤维口中,然后经过熔融挤出后冷却造粒,制成改性聚丙烯复合材料,其挤出温度为190-230℃,螺杆转速为250-350r/min。将制备好的改性聚丙烯复合材料与8%发泡剂母粒混合均匀,采用注塑成型方法,在二次开模条件下制备具有电磁屏蔽的PP基复合材料,并制备标准测试样条。
本申请的对比例1,将71.5%的PP511MK40T、4%相容剂、2%增韧剂、0.3%抗氧剂、1.0%润滑剂聚乙烯蜡、0.2%光稳定剂在高速混合器中混合5分钟,加入双螺杆挤出机中主喂料口,同时将21%短切碳纤维加入纤维口中,然后经过熔融挤出后冷却造粒,制成改性聚丙烯复合材料,其挤出温度为190-230℃,螺杆转速为250-350r/min。将制备好的改性聚丙烯复合材料采用注塑成型方法,制备具有电磁屏蔽的 PP基复合材料,并制备标准测试样条。
本申请的对比例2,将70.7%的PP511MK40T、4%相容剂、6%石墨烯气凝胶、3%增韧剂、0.3%抗氧剂、0.8%润滑剂聚乙烯蜡、0.2%光稳定剂在高速混合器中混合5分钟,加入双螺杆挤出机中主喂料口,同时将15%短切碳纤维加入纤维口中,然后经过熔融挤出后冷却造粒,制成改性聚丙烯复合材料,其挤出温度为190-230℃,螺杆转速为 250-350r/min。将制备好的改性聚丙烯复合材料采用注塑成型方法,制备具有电磁屏蔽的PP基复合材料,并制备标准测试样条。
本申请的对比例3,将65.5%的PP511MK40T、4%相容剂、5%石墨烯气凝胶、3%增韧剂、0.3%抗氧剂、1.0%润滑剂聚乙烯蜡、0.2%光稳定剂在高速混合器中混合5分钟,加入双螺杆挤出机中主喂料口,同时将20%短切碳纤维加入纤维口中,然后经过熔融挤出后冷却造粒,制成改性聚丙烯复合材料,其挤出温度为190-230℃,螺杆转速为 250-350r/min。将制备好的改性聚丙烯复合材料采用注塑成型方法,制备具有电磁屏蔽的PP基复合材料,并制备标准测试样条。
性能评价方式及实行标准:
拉伸性能测试:按照ISO 527标准进行,测试速度5mm/min。
缺口冲击强度测试:按照ISO 179标准进行,测试条件23℃。
浮纤测试:样板尺寸为300*100*3mm,目视观察外观情况。
屏蔽效能测试:按照MIL-DTL-83528C标准进行,样板厚度为2mm,测试频率30MHz-10GHz。
实施例1-5和对比例1-3测试数据对比
从上表的实施例1-5可以看出,PP复合材料保持了很好的力学性能,同时兼顾优秀的电磁屏蔽能力;实施例2和4与对比例1-3可以看出,用石墨烯气凝胶部分替代碳纤维提升复合材料的电磁屏蔽效能,同时改善了碳纤维改性聚丙烯材料的浮纤问题。发泡剂母粒在注塑成型过程中产生的惰性气体,可以提升碳纤维和石墨烯气凝胶在聚丙烯材料的分散性,并提升复合材料的电磁屏蔽效能。
以上举例仅仅是对本发明的举例说明,并不构成对本发明的保护范围的限制,凡是与本发明相同或相似的设计均属于本发明的保护范围。
Claims (8)
1.一种用于电磁屏蔽的PP基复合材料,其特征在于,由下列重量百分比的原料组成:
PP颗粒树脂 57.2-73%
相容剂 3-5%
导电电磁屏蔽剂 18-25%
发泡剂母粒 4-8%
增韧剂 1-3%
抗氧剂 0.2-0.4%
润滑剂 0.6-1.0%
光稳定剂 0.2-0.4%。
2.按照权利要求1所述的一种用于电磁屏蔽的PP基复合材料,其特征在于,所述PP颗粒树脂为均聚聚丙烯或共聚聚丙烯一种或两种的混合物,其熔体流动速率为10-60g/10min,所述相容剂为PP-g-MAH,其接枝率为0.8-1.5%。
3.按照权利要求1所述的一种用于电磁屏蔽的PP基复合材料,其特征在于,所述导电电磁屏蔽剂为碳纤维和石墨烯气凝胶两种的混合物,其中碳纤维是连续碳纤维或短切碳纤维中的一种,石墨烯气凝胶含量占比为4-8%。
4.按照权利要求1所述的一种用于电磁屏蔽的PP基复合材料,其特征在于,所述发泡剂母粒为发泡剂载体将发泡剂和发泡助剂包裹在内部制备而成,其中发泡剂载体为聚乙烯、乙烯-醋酸乙烯共聚物、三元乙丙橡胶、乙烯-丁烯共聚物、乙烯-辛烯共聚物中的一种或几种组合,发泡剂为碳酸氢钠、碳酸氢铵、偶氮二甲酰胺中的一种或几种组合,发泡助剂为柠檬酸、氧化锌、硬脂酸锌中的一种或几种组合。
5.按照权利要求4所述的一种用于电磁屏蔽的PP基复合材料,其特征在于,所述发泡剂载体为聚乙烯,发泡剂为碳酸氢钠,发泡助剂为柠檬酸。
6.按照权利要求1所述的一种用于电磁屏蔽的PP基复合材料,其特征在于,所述增韧剂为乙烯-辛烯的共聚物,密度为0.86-0.90g/cm3,其熔体流动速率为0.5-10g/10min,抗氧剂包括主抗氧剂和辅抗氧剂,其中主抗氧剂为1010、3114和DSTP中的一种或几种,所述辅抗氧剂为168和618中的一种或两种。
7.按照权利要求1所述的一种用于电磁屏蔽的PP基复合材料,其特征在于,所述润滑剂为聚乙烯蜡、EBS或者硅酮中的一种或几种,光稳定剂为PP类载体的受阻胺类光稳定剂。
8.一种如权利要求1-7所述任一所述用于电磁屏蔽的PP基复合材料的制备方法,其特征在于,具体步骤如下:
步骤一,将碳纤维和发泡剂母粒以外的各原料组分在高速混合器中混合5分钟;然后加入双螺杆挤出机中主喂料口,同时将碳纤维加入纤维口中,然后经过熔融挤出后冷却造粒,制成改性聚丙烯复合材料,其挤出温度为190-230℃,螺杆转速为250-350r/min,整个挤出过程的停留时间为1-2min;
步骤二,将上述步骤制备的改性聚丙烯复合材料与发泡剂母粒混合均匀,采用注塑成型方法,在二次开模条件下制备具有高电磁屏蔽的PP基复合材料。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211355163.2A CN115477813B (zh) | 2022-11-01 | 2022-11-01 | 一种用于电磁屏蔽的pp基复合材料及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211355163.2A CN115477813B (zh) | 2022-11-01 | 2022-11-01 | 一种用于电磁屏蔽的pp基复合材料及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN115477813A true CN115477813A (zh) | 2022-12-16 |
CN115477813B CN115477813B (zh) | 2024-02-20 |
Family
ID=84395481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202211355163.2A Active CN115477813B (zh) | 2022-11-01 | 2022-11-01 | 一种用于电磁屏蔽的pp基复合材料及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115477813B (zh) |
Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104419107A (zh) * | 2013-08-29 | 2015-03-18 | 合肥杰事杰新材料股份有限公司 | 一种基于碳纤维和石墨烯的聚合物基电磁屏蔽材料及其制备方法 |
CN104845361A (zh) * | 2015-05-13 | 2015-08-19 | 扬州利贞复合材料有限公司 | 短切碳纤维、纳米导电炭黑/石墨烯协同增强高导电热塑性塑料及其制备方法 |
CN105199229A (zh) * | 2015-10-27 | 2015-12-30 | 济南大学 | 一种氧化石墨烯和碳纤维增强聚丙烯复合材料及其制备方法 |
CN106750998A (zh) * | 2016-12-26 | 2017-05-31 | 浙江普利特新材料有限公司 | 一种新型阻燃聚丙烯发泡材料及其制备方法 |
CN106883574A (zh) * | 2015-12-15 | 2017-06-23 | 上海杰事杰新材料(集团)股份有限公司 | 高韧性电磁屏蔽聚碳酸酯材料及其制备方法和应用 |
KR20170090040A (ko) * | 2016-01-28 | 2017-08-07 | 주식회사 엘지화학 | 열가소성 수지 조성물 및 이로부터 제조된 성형물품 |
CN107603004A (zh) * | 2016-07-12 | 2018-01-19 | 中国科学院宁波材料技术与工程研究所 | 电磁屏蔽聚合物发泡材料及其制备方法 |
CN108503971A (zh) * | 2018-03-02 | 2018-09-07 | 上海利物盛企业集团有限公司 | 一种石墨烯导电塑料及其制备方法 |
CN108929487A (zh) * | 2018-07-17 | 2018-12-04 | 杭州高兴工程塑料有限公司 | 一种导热电磁屏蔽聚丙烯复合材料及其制备方法 |
CN108976749A (zh) * | 2018-07-25 | 2018-12-11 | 深圳市飞荣达科技股份有限公司 | 热塑性高导热屏蔽复合材料及其制备方法 |
KR20200046235A (ko) * | 2018-10-23 | 2020-05-07 | 현대자동차주식회사 | 전자파 차폐 기능을 갖는 복합소재 조성물 및 이를 포함하는 성형체 |
CN111592706A (zh) * | 2020-05-29 | 2020-08-28 | 深圳市长园特发科技有限公司 | 辐射交联聚乙烯泡棉及其制备方法和应用 |
CN111978712A (zh) * | 2020-09-07 | 2020-11-24 | 湖南工程学院 | 一种电磁防护塑料及其制备方法 |
CN114573858A (zh) * | 2022-03-15 | 2022-06-03 | 浙江工业大学 | 一种可用于电磁屏蔽的多层发泡材料的制备方法 |
KR20220105186A (ko) * | 2021-01-18 | 2022-07-27 | 한국재료연구원 | 전자파 차폐용 복합 소재 및 이의 제조방법 |
-
2022
- 2022-11-01 CN CN202211355163.2A patent/CN115477813B/zh active Active
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104419107A (zh) * | 2013-08-29 | 2015-03-18 | 合肥杰事杰新材料股份有限公司 | 一种基于碳纤维和石墨烯的聚合物基电磁屏蔽材料及其制备方法 |
CN104845361A (zh) * | 2015-05-13 | 2015-08-19 | 扬州利贞复合材料有限公司 | 短切碳纤维、纳米导电炭黑/石墨烯协同增强高导电热塑性塑料及其制备方法 |
CN105199229A (zh) * | 2015-10-27 | 2015-12-30 | 济南大学 | 一种氧化石墨烯和碳纤维增强聚丙烯复合材料及其制备方法 |
CN106883574A (zh) * | 2015-12-15 | 2017-06-23 | 上海杰事杰新材料(集团)股份有限公司 | 高韧性电磁屏蔽聚碳酸酯材料及其制备方法和应用 |
KR20170090040A (ko) * | 2016-01-28 | 2017-08-07 | 주식회사 엘지화학 | 열가소성 수지 조성물 및 이로부터 제조된 성형물품 |
CN107603004A (zh) * | 2016-07-12 | 2018-01-19 | 中国科学院宁波材料技术与工程研究所 | 电磁屏蔽聚合物发泡材料及其制备方法 |
CN106750998A (zh) * | 2016-12-26 | 2017-05-31 | 浙江普利特新材料有限公司 | 一种新型阻燃聚丙烯发泡材料及其制备方法 |
CN108503971A (zh) * | 2018-03-02 | 2018-09-07 | 上海利物盛企业集团有限公司 | 一种石墨烯导电塑料及其制备方法 |
CN108929487A (zh) * | 2018-07-17 | 2018-12-04 | 杭州高兴工程塑料有限公司 | 一种导热电磁屏蔽聚丙烯复合材料及其制备方法 |
CN108976749A (zh) * | 2018-07-25 | 2018-12-11 | 深圳市飞荣达科技股份有限公司 | 热塑性高导热屏蔽复合材料及其制备方法 |
KR20200046235A (ko) * | 2018-10-23 | 2020-05-07 | 현대자동차주식회사 | 전자파 차폐 기능을 갖는 복합소재 조성물 및 이를 포함하는 성형체 |
CN111592706A (zh) * | 2020-05-29 | 2020-08-28 | 深圳市长园特发科技有限公司 | 辐射交联聚乙烯泡棉及其制备方法和应用 |
CN111978712A (zh) * | 2020-09-07 | 2020-11-24 | 湖南工程学院 | 一种电磁防护塑料及其制备方法 |
KR20220105186A (ko) * | 2021-01-18 | 2022-07-27 | 한국재료연구원 | 전자파 차폐용 복합 소재 및 이의 제조방법 |
CN114573858A (zh) * | 2022-03-15 | 2022-06-03 | 浙江工业大学 | 一种可用于电磁屏蔽的多层发泡材料的制备方法 |
Non-Patent Citations (2)
Title |
---|
JIAJUN JU 等: "Lightweight multifunctional polypropylene/carbon nanotubes/carbon black nanocomposite foams with segregated structure, ultralow percolation threshold and enhanced electromagnetic interference shielding performance", COMPOSITES SCIENCE AND TECHNOLOGY, pages 1 - 12 * |
彭浩: "兼具导电及电磁屏蔽功能的聚烯烃复合材料的制备", 中国优秀硕士学位论文全文数据库, no. 05, pages 1 - 68 * |
Also Published As
Publication number | Publication date |
---|---|
CN115477813B (zh) | 2024-02-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100405886C (zh) | 一种屏蔽宽频电磁波的聚乙烯复合膜及其制备方法 | |
CN102585348B (zh) | 一种增韧导电材料及其制备方法 | |
CN112063048B (zh) | 一种低介电高熔体强度阻燃聚丙烯材料及其制备方法 | |
CN113527790A (zh) | 一种防静电辐照交联聚乙烯发泡材料及其制备方法 | |
CN111592706A (zh) | 辐射交联聚乙烯泡棉及其制备方法和应用 | |
CN112694661A (zh) | 一种兼具导热和吸波功能的电磁屏蔽聚丙烯复合材料及其制备方法 | |
CN115403861B (zh) | 一种各向同性电磁屏蔽聚丙烯复合材料及其制备和应用 | |
CN106750998A (zh) | 一种新型阻燃聚丙烯发泡材料及其制备方法 | |
CN112500631A (zh) | 一种具有电磁屏蔽功能的无卤阻燃电缆料及其制备方法 | |
CN111484681A (zh) | 一种石墨烯改性抗静电聚丙烯复合材料及其制备方法 | |
CN112300490A (zh) | 一种微发泡聚丙烯复合材料及其制备方法和应用 | |
CN113603921A (zh) | 一种微发泡高透波增强聚丙烯材料及其制备方法 | |
CN111961305B (zh) | 一种微孔发泡hips电磁屏蔽材料及其制备方法与应用 | |
CN115477813B (zh) | 一种用于电磁屏蔽的pp基复合材料及其制备方法 | |
CN112708206A (zh) | 一种片状纳米氢氧化镁填充微发泡聚丙烯材料及其制备方法和应用 | |
CN114196069B (zh) | 一种高分散炭黑及其制备方法和应用 | |
CN113831641B (zh) | 低线性膨胀系数和高表面硬度的聚丙烯材料复合材料及其制备方法 | |
CN117820743A (zh) | 一种电磁屏蔽聚乙烯材料及其制备方法 | |
TWI753706B (zh) | 一種導電塑膠及其應用 | |
CN113969014A (zh) | 一种乙烯-醋酸乙烯发泡吸波材料 | |
CN111574766B (zh) | 高散热性辐射交联聚乙烯泡棉及其制备方法和应用 | |
CN110452465B (zh) | 一种高光泽聚丙烯微发泡材料及其制备方法 | |
CN117887198B (zh) | 可用于高速挤出发泡的阻燃聚丙烯高频芯线复合材料及制备方法 | |
CN110964242B (zh) | 一种低收缩率聚烯烃组合物及其制备方法和应用 | |
CN109071892B (zh) | 复合聚乙烯组合物、其制造方法和包含其的制品 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |