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WO2019069140A1 - Composite de polyoléfine électriquement conducteur et son procédé de préparation - Google Patents

Composite de polyoléfine électriquement conducteur et son procédé de préparation Download PDF

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Publication number
WO2019069140A1
WO2019069140A1 PCT/IB2018/001267 IB2018001267W WO2019069140A1 WO 2019069140 A1 WO2019069140 A1 WO 2019069140A1 IB 2018001267 W IB2018001267 W IB 2018001267W WO 2019069140 A1 WO2019069140 A1 WO 2019069140A1
Authority
WO
WIPO (PCT)
Prior art keywords
carbon black
composite material
conductive carbon
material according
black filled
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.)
Ceased
Application number
PCT/IB2018/001267
Other languages
English (en)
Inventor
Saeed M. AL-ZAHRANI
Hamid SHAIKH
Arfat Anis
S.K.H. Gulrez
Mukesh K. YADAV
Eng Hauz QUA
Hoshiar Y. MOLOD
Kais As SULTANY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Industrialization Co (tasnee)
Original Assignee
National Industrialization Co (tasnee)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by National Industrialization Co (tasnee) filed Critical National Industrialization Co (tasnee)
Publication of WO2019069140A1 publication Critical patent/WO2019069140A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/001—Conductive additives

Definitions

  • This invention relates to an electrically conductive polyolefin composite comprising carbon black conductive filler, and processes for preparing the same.
  • Polymer thermoplastics owing to their high impact resistance, non-corrosive nature, being lighter and often more cost effective than metals, have of late, emerged as a potential replacement for metals in several applications.
  • polypropylene (PP) and polyethylene (PE) are known for their excellent chemical resistance and mechanical properties.
  • Polymers are electrically insulating materials with conductivity values as low as 10 "7 - 10 "!4 S cm '1 .
  • increasing their electrical conductivity would allow them to be used in other applications such as in manufacturing of computer chips, EMI shielding, and dissipation of electrostatic discharge.
  • EIA Electronic Industries Association
  • a plastic material would be classified as conductive one if it has the ability to protect against electrostatic discharge (BSD; surface resistivity between 10 0 12 ohms/sq) or electromagnetic interference / radio frequency interference (EMI/RFI; surface resistivity of ⁇ 10 5 ohm/sq).
  • BSD electrostatic discharge
  • EMI/RFI electromagnetic interference / radio frequency interference
  • Carbon black (CB) a particulate form of carbon is widely used in tires, elastomers (rubber), plastics, inks, and paint.
  • plastics carbon black is used as a colorant, as a stabilizer to protect the polymer from UV radiation, as reinforcement, and to improve the electrical conductivity of the material.
  • the typical electrical resistivity of carbon black is about 10 "2 -10 "3 Qcm and may vary depending on the morphology, particle size and preparation conditions.
  • CBs having smaller aggregates, higher structures, and less volatiles are good for use as filler in a conductive polymer composite.
  • a carbon black having a high electrical conductivity even at low filler loading levels (low percolation threshold) would be ideal to use.
  • Carbon black particles with larger surface area and high degree of branching (allowing it to contact a larger amount of polymer) can impart good electrical conductivit in composites.
  • This invention relates to an electrically conductive polyolefm composite and a process for preparing the same.
  • the electrically conductive polyolefm composite comprises a polyolefm resin, maleic anhydride modified resin as a compatibilizer, and carbon black conductive filler.
  • the process for preparing the composite comprises the steps of mixing the conductive filler with the poly mer in a twin-screw extruder thereby producing a polymer composite with enhanced electrical conductivity due to improved dispersion of the conductive fillers.
  • the present invention enables production of conductive carbon fiber filled polypropylene and polyethylene composite materials which have excellent electrical conductivity properties.
  • conductive carbon black filled polyolefm composite material comprises a polyolefm selected from polyethylene (including HDPE), polypropylene and combinations thereof, as a matrix resin.
  • Suitable conductive carbon blacks include, but are not limited to, granules such as EN SAC O® 250 G (granular form) which can be obtained from TIMCAL, Switzerland. This material has high structure and void volume that allows the formation and retention of conductive carbon networks at a very low filler loading. Some of the important features of this material are shown in Table 1.
  • the interfacial adhesion of the carbon black with the polyolefm resins can be obtained by grafting of a monomer that contains an etliylenic double bond and a polar group in the same molecule.
  • a monomer that contains an etliylenic double bond and a polar group in the same molecule For example, acid anhydrides and their derivatives can be used.
  • the amount of the polyolefm that contains an ethylenic double bond and a polar group in the same chain is not particularly limited, and is preferably 1 to 10 parts by weight for each 100 parts by weight of the main chain of polyolefm. An amount smaller than 1 part by weight may result in insufficient adhesion to the carbon fibers, while an amount of larger than 20 parts by weight may adversely affect the physical properties of the composites.
  • the order of addition is preferably such that the polyolefm resin, conductive carbon black, and the polyolefm that contains anhydride polar group in the same molecule are melt mixed to prepare a composite mixture.
  • the device used for the melt mixing may be a twin screw or single screw extruder, a Banbury mixer, a heating press or the like.
  • the heating temperature in melt mixing is preferably 160°C to 250°C such that the polyolefm resin is satisfactorily melted but is not decomposed.
  • the production method of the composite material of the carbon black and the matrix resin employs (but is not limited to) an integral mixing method which includes the carbon black with the polyolefm in a molten state at a high temperature under pressure with use of a device (e.g., an extruder, an injection molding machine, pressing machine) followed by cooling and curing.
  • a device e.g., an extruder, an injection molding machine, pressing machine
  • the polyolefm resin used in the present invention is not particularly limited, and various polyolefm resins can be used. Suitable examples include, but are not limited to, polypropylene, poly-l-butene, polyisobutylene, and random copolymers or block copolymers of propylene with ethylene.
  • the form of the matrix resin to be used in production of the conductive carbon black filled composite material of the present invention is not particularly limited.
  • the matrix resin may be used in the form of pellets, flakes, or powder.
  • the dry-blends were fed with 60-100 parts of injection molding grade homopolypropylene ;
  • the extrudate was cooled in a water bath, air-dried, and pelletized to obtain the modified polypropylene composite resins. ' The pelletized modified polypropylene resins were compression molded into sheets for electrical resistivity measurements.
  • Conductive polypropylene composite materials were produced using the methods described above, but adjusting: (1) the amount of PRIEX, (2) the amount of carbon black; (3) extrusion temperature; and (4) screw speed 25 rpm. Resistivity measurements are shown in Table 2 below.
  • PP-EL from Simona company which is polypropylene with carbon black based was measured and showed 2.38 x 10 2 Ohm/sq surface resistivity and a volume resistivity of 1.80 x 10 1 Ohm.cm.
  • Tchodakov group reported that the lowest volume resistivity achieved was ⁇ 10 4 Ohm.cm for the 15 wt% loading of carbon black in polypropylene matrix. See R. Tchoudakov, O. Breuer, M. Narkis, A. Siegmann. Polym Networks Blends 1996,6, 1.
  • Li et ai in 2.006 reported that 1.48 x 10 10 2 Ohm.cm. with the 25 wt% carbon black polypropylene composites. See Y. Li, S. Wang, Y. Zhang, Polymer & Polymer Composites 2006, 14, 377.
  • volume resistivity was ⁇ 10 3 Ohm.cm with the 8 wt% carbon black loading in polypropylene composites. See M. Wen, X Sun, L Su J Shen, J. Li S, Guo, Polymer 2012 53, 1602.
  • the extrudate was cooled in a water bath, air-dried, and pelletized to obtain the modified polypropylene composite resins.
  • the pelletized modified polypropylene resins were compression molded into sheets for electrical resistivity measurements.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention concerne un procédé de préparation d'un composite de polyoléfine électriquement conducteur comprenant, mais de façon non exhaustive, du PEHD ou du PP ou les deux avec du noir de carbone en tant que charge conductrice. Le procédé comprend les étapes consistant à mélanger la charge conductrice avec le polymère dans une extrudeuse à double vis, ce qui permet de produire un composite polymère présentant une conductivité électrique améliorée par une meilleure dispersion des charges conductrices.
PCT/IB2018/001267 2017-10-05 2018-10-05 Composite de polyoléfine électriquement conducteur et son procédé de préparation Ceased WO2019069140A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762568550P 2017-10-05 2017-10-05
US62/568,550 2017-10-05

Publications (1)

Publication Number Publication Date
WO2019069140A1 true WO2019069140A1 (fr) 2019-04-11

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Family Applications (1)

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PCT/IB2018/001267 Ceased WO2019069140A1 (fr) 2017-10-05 2018-10-05 Composite de polyoléfine électriquement conducteur et son procédé de préparation

Country Status (1)

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WO (1) WO2019069140A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113512251A (zh) * 2021-05-17 2021-10-19 安徽洁纯生物科技有限公司 一种内衬桶及其制备工艺
WO2022110655A1 (fr) * 2020-11-27 2022-06-02 金发科技股份有限公司 Composite de polypropylène conducteur et procédé de préparation associé
CN115536936A (zh) * 2021-06-30 2022-12-30 合肥杰事杰新材料股份有限公司 一种导电聚丙烯及其制备方法
EP4392486A4 (fr) * 2021-08-23 2025-08-06 Birla Carbon U S A Inc Noir de carbone hautement structuré et compositions plastiques le comprenant

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2105358A (en) * 1980-05-23 1983-03-23 Kureha Chemical Ind Co Ltd Electroconductive resin composite material for molding
EP1349179A1 (fr) * 2002-03-18 2003-10-01 ATOFINA Research Polyoléfines conductrices possédants des bonnes propriétés mécaniques
US20080110429A1 (en) * 2005-10-07 2008-05-15 Toyo Roki Mfg. Co.,Ltd. Resin Composition For Intake System Part For Internal Combustion Engine And Intake System Part
US20140197367A1 (en) * 2013-01-11 2014-07-17 Sabic Innovative Plastics Ip B.V. Broadening of Percolation Slope in Conductive Carbon Black Compositions with at least One Non-Conductive Polymer
WO2016064633A1 (fr) * 2014-10-22 2016-04-28 Sabic Global Technologies, B.V. Compositions conductrices moulables pour parois minces avec des propriétés physiques améliorées et leurs utilisations
WO2017005921A1 (fr) * 2015-07-09 2017-01-12 Imerys Graphite & Carbon Switzerland Ltd. Noir de carbone hautement conducteur de faible viscosité

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2105358A (en) * 1980-05-23 1983-03-23 Kureha Chemical Ind Co Ltd Electroconductive resin composite material for molding
EP1349179A1 (fr) * 2002-03-18 2003-10-01 ATOFINA Research Polyoléfines conductrices possédants des bonnes propriétés mécaniques
US20080110429A1 (en) * 2005-10-07 2008-05-15 Toyo Roki Mfg. Co.,Ltd. Resin Composition For Intake System Part For Internal Combustion Engine And Intake System Part
US20140197367A1 (en) * 2013-01-11 2014-07-17 Sabic Innovative Plastics Ip B.V. Broadening of Percolation Slope in Conductive Carbon Black Compositions with at least One Non-Conductive Polymer
WO2016064633A1 (fr) * 2014-10-22 2016-04-28 Sabic Global Technologies, B.V. Compositions conductrices moulables pour parois minces avec des propriétés physiques améliorées et leurs utilisations
WO2017005921A1 (fr) * 2015-07-09 2017-01-12 Imerys Graphite & Carbon Switzerland Ltd. Noir de carbone hautement conducteur de faible viscosité

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
A SALEEM; L FRORMANN; A IQBAL, JOURNAL OF POLYMER RESEARCH, vol. 14, 2007, pages 1 21
M. WEN; X SUN; L SU; J SHEN; J. LI; S. GUO, POLYMER, vol. 53, 2012, pages 1602
O. A. MOSKALYUK; A. N. ALESHIN; E. S. TSOBKALLO; A. V. KRESTININ; V. E. YUDIN, PHYS. SOLID STATE, vol. 54, 2012, pages 2122
R. TCHOUDAKOV; O. BREUER; M. NARKIS; A. SIEGMANN, POLYM NETWORKS BLENDS, vol. 6, 1996, pages 1
Y. LI; S. WANG; Y. ZHANG, POLYMER & POLYMER COMPOSITES, vol. 14, 2006, pages 377

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022110655A1 (fr) * 2020-11-27 2022-06-02 金发科技股份有限公司 Composite de polypropylène conducteur et procédé de préparation associé
CN113512251A (zh) * 2021-05-17 2021-10-19 安徽洁纯生物科技有限公司 一种内衬桶及其制备工艺
CN115536936A (zh) * 2021-06-30 2022-12-30 合肥杰事杰新材料股份有限公司 一种导电聚丙烯及其制备方法
CN115536936B (zh) * 2021-06-30 2024-06-14 合肥杰事杰新材料股份有限公司 一种导电聚丙烯及其制备方法
EP4392486A4 (fr) * 2021-08-23 2025-08-06 Birla Carbon U S A Inc Noir de carbone hautement structuré et compositions plastiques le comprenant

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