CN108659449A - A kind of electromagnetism interference strand material and preparation method thereof - Google Patents

A kind of electromagnetism interference strand material and preparation method thereof Download PDF

Info

Publication number
CN108659449A
CN108659449A CN201810551383.XA CN201810551383A CN108659449A CN 108659449 A CN108659449 A CN 108659449A CN 201810551383 A CN201810551383 A CN 201810551383A CN 108659449 A CN108659449 A CN 108659449A
Authority
CN
China
Prior art keywords
parts
electromagnetism interference
strand material
added
carbon fibre
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.)
Pending
Application number
CN201810551383.XA
Other languages
Chinese (zh)
Inventor
嵇存雄
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.)
WUHU EXCELLENCE WIRE HARNESS SYSTEM CO Ltd
Original Assignee
WUHU EXCELLENCE WIRE HARNESS SYSTEM CO Ltd
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 WUHU EXCELLENCE WIRE HARNESS SYSTEM CO Ltd filed Critical WUHU EXCELLENCE WIRE HARNESS SYSTEM CO Ltd
Priority to CN201810551383.XA priority Critical patent/CN108659449A/en
Publication of CN108659449A publication Critical patent/CN108659449A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L55/00Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
    • C08L55/02ABS [Acrylonitrile-Butadiene-Styrene] polymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2227Oxides; Hydroxides of metals of aluminium
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2296Oxides; Hydroxides of metals of zinc
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/20Applications use in electrical or conductive gadgets
    • C08L2203/202Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Landscapes

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

Abstract

The invention discloses a kind of electromagnetism interference strand material and preparation method thereof, the strand material of electromagnetism interference includes following component:30 45 parts of ABS resin, 10 18 parts of polyamide, 6 10 parts of ethylene propylene diene rubber, modified 2.4 3.6 parts of gas-phase grown nanometer carbon fibre powder, 4.5 10 parts of nano aluminium oxide, 0.8 1.2 parts of nano zine oxide, 0.9 1.6 parts of silane coupling agent, 9 13 parts of plasticizer, 1.5 3.2 parts of compatilizer, 0.7 1.1 parts of antioxidant 1010.The electromagnetism interference effect of the strand material of electromagnetism interference provided by the invention is good, can be effectively protected the stability and normal operation of harness internal performance, and also has many advantages, such as heat-resisting, wear-resistant, anti-aging;Preparation method is simple simultaneously, and reaction condition is mild, is easy to industrialized production.

Description

A kind of electromagnetism interference strand material and preparation method thereof
Technical field
The invention belongs to harness fields, and in particular to a kind of electromagnetism interference strand material and preparation method thereof.
Background technology
Automotive wire bundle is the network principal of automobile circuit, and automobile circuit is also just not present without harness.Harness refers to by copper After contact terminal (connector) made of material punching is crimped with electric wire, outside plastic compression insulator or added metal shell again Deng, tied up with harness to be formed connection circuit component.Harness industrial chain includes electric wire, connector, process equipment, harness system Make with downstream application industry, harness be widely used it is general, can be used in automobile, household electrical appliance, computer and communication apparatus, various electricity Sub- instrument and meter etc..Due to the fast development of electronic information technology, the electromagnetic radiation phenomenon of surrounding is increasingly severe, to one The service life of a little equipment etc. and function etc. all produce large effect;Thus in order to ensure the stabilization of harness internal performance Property, and ensure the normal operation of harness, it is necessary to provide a kind of harness of electromagnetism interference.
Invention content
In view of the foregoing, it is an object to provide a kind of electromagnetism interference strand material and preparation method thereof, Its electromagnetism interference effect of the strand material being prepared is good, can be effectively protected the stability of harness internal performance and normal Operation;And preparation method is simple, and reaction condition is mild.
To achieve the goals above, the technical solution adopted by the present invention is:A kind of electromagnetism interference strand material, by following The raw material of parts by weight forms:
30-45 parts of ABS resin, 10-18 parts of polyamide, 6-10 parts of ethylene propylene diene rubber, modified gas-phase grown nanometer 2.4-3.6 parts of carbon fiber powder, 4.5-10 parts of nano aluminium oxide, 0.8-1.2 parts of nano zine oxide, silane coupling agent 0.9-1.6 Part, 9-13 parts of plasticizer, 1.5-3.2 parts of compatilizer, 0.7-1.1 parts of antioxidant 1010;Wherein, the modified gas-phase grown nanometer The preparation method of carbon fiber is:
A certain amount of gas-phase grown nanometer carbon fibre is added in the reaction vessel for filling dimethyl sulfoxide (DMSO) organic solvent, It is placed in the ultrasonic cleaning instrument of 40-50KHz sonic oscillation 50-60min at 55-65 DEG C, quality point is then added into reaction solution Number is the polyvinyl alcohol water solution of 25-30%, and obtained mixed solution is placed in 65-75 in the ultrasonic cleaning instrument of 40-50KHz again Sonic oscillation 2-4h at DEG C, after sonic oscillation by mixed solution horizontal centrifuge with the rotating speed of 3500-4500r/min from The heart detaches, and obtains lower sediment, and being put into baking oven 60-80 DEG C, drying to constant weight to get modified gas-phase grown nanometer carbon fibre powder End;Wherein, gas-phase grown nanometer carbon fibre, dimethyl sulfoxide (DMSO) and mass fraction are the weight of the polyvinyl alcohol water solution of 25-30% It is 1 that amount part, which is compared,:(4-7):(2-3).
The mass ratio of the modified gas-phase grown nanometer carbon fibre powder and nano aluminium oxide is 1:(1.8-3.2).
The plasticizer is the compound of phthalic anhydride and paraffin oil;Wherein, phthalic anhydride and paraffin oil Mass ratio is 1:(0.8-1.5).
The compatilizer is the polypropylene of maleic anhydride grafting, the polyethylene of maleic anhydride grafting, maleic anhydride grafting It is one or more in POE.
Above-mentioned electromagnetism interference strand material, including following preparation process:
(1) formula rate is pressed, ABS resin, polyamide, ethylene propylene diene rubber and plasticizer are added in mixing machine and mixed It closes, 10~20min is stirred with the speed of 180~250r/min, obtains mixture A;
(2) formula rate is pressed, silane coupling agent, compatilizer and antioxidant 1010 are added to the mixture A obtained by step (1) In continue to be stirred until homogeneous, then improve the rotating speed of mixing machine to 280~360r/min, then will modified vapor phase growth Nano carbon fibers It ties up powder, nano aluminium oxide and nano zine oxide to be added, be stirred until homogeneous to get mixture B;
(3) mixture B made from step (2) is added in screw extruder, through melting extrusion, tie rod, it is air-cooled, cut Grain, the strand material for being drying to obtain electromagnetism interference.
Beneficial effects of the present invention:The electromagnetism interference effect of the strand material of electromagnetism interference provided by the invention is good, It can be effectively protected the stability and normal operation of harness internal performance, and also had heat-resisting, wear-resistant, anti-aging etc. excellent Point;Preparation method is simple simultaneously, and reaction condition is mild, is easy to industrialized production.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below.It should be understood that described herein specific Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.In embodiment, all raw materials are all purchased from Gaede Chemical industry net.
Embodiment 1
A kind of electromagnetism interference strand material, is made of the raw material of following parts by weight:
38 parts of ABS resin, 15 parts of polyamide, 8 parts of ethylene propylene diene rubber, modified gas-phase grown nanometer carbon fibre powder 3 parts, 9 parts of nano aluminium oxide, 1 part of nano zine oxide, 1.3 parts of silane coupling agent, 11 parts of plasticizer, maleic anhydride grafting POE 2.8 parts, 0.9 part of antioxidant 1010;Wherein, the preparation method of the modified gas-phase grown nanometer carbon fibre is:
4 parts of gas-phase grown nanometer carbon fibres are added in the reaction vessel for filling 20 parts of dimethyl sulfoxide (DMSO) organic solvents, Sonic oscillation 55min at 60 DEG C is placed in the ultrasonic cleaning instrument of 45KHz, and 10 parts of mass fractions are then added into reaction solution is Obtained mixed solution is placed in the ultrasonic cleaning instrument of 50KHz sonic oscillation at 70 DEG C by 28% polyvinyl alcohol water solution again Mixed solution horizontal centrifuge is centrifuged after sonic oscillation with the rotating speed of 4000r/min, it is heavy to obtain lower layer by 3h It forms sediment, being put into baking oven 75 DEG C, drying to constant weight to get modified gas-phase grown nanometer carbon fibre powder.
The plasticizer is the compound of phthalic anhydride and paraffin oil;Wherein, phthalic anhydride and paraffin oil Mass ratio is 1:1.2.
Above-mentioned electromagnetism interference strand material, including following preparation process:
(1) formula rate is pressed, ABS resin, polyamide, ethylene propylene diene rubber and plasticizer are added in mixing machine and mixed It closes, 18min is stirred with the speed of 220r/min, obtains mixture A;
(2) formula rate is pressed, silane coupling agent, the POE of maleic anhydride grafting and antioxidant 1010 are added to step (1) institute Continue to be stirred until homogeneous in the mixture A obtained, then then the rotating speed for improving mixing machine is received modified vapor phase growth to 330r/min Rice carbon fiber powder, nano aluminium oxide and nano zine oxide are added, and are stirred until homogeneous to get mixture B;
(3) mixture B made from step (2) is added in screw extruder, through melting extrusion, tie rod, it is air-cooled, cut Grain, the strand material for being drying to obtain electromagnetism interference.
Embodiment 2
A kind of electromagnetism interference strand material, is made of the raw material of following parts by weight:
42 parts of ABS resin, 15 parts of polyamide, 8 parts of ethylene propylene diene rubber, modified gas-phase grown nanometer carbon fibre powder 3.2 parts, 9.6 parts of nano aluminium oxide, 1.1 parts of nano zine oxide, 1.4 parts of silane coupling agent, 12 parts of plasticizer, maleic anhydride grafting 2.8 parts of polypropylene, 1 part of antioxidant 1010;Wherein, the preparation method of the modified gas-phase grown nanometer carbon fibre is:
Wherein, the preparation method of the modified gas-phase grown nanometer carbon fibre is:
4 parts of gas-phase grown nanometer carbon fibres are added in the reaction vessel for filling 20 parts of dimethyl sulfoxide (DMSO) organic solvents, Sonic oscillation 55min at 60 DEG C is placed in the ultrasonic cleaning instrument of 45KHz, and 10 parts of mass fractions are then added into reaction solution is Obtained mixed solution is placed in the ultrasonic cleaning instrument of 50KHz sonic oscillation at 70 DEG C by 28% polyvinyl alcohol water solution again Mixed solution horizontal centrifuge is centrifuged after sonic oscillation with the rotating speed of 4000r/min, it is heavy to obtain lower layer by 3h It forms sediment, being put into baking oven 75 DEG C, drying to constant weight to get modified gas-phase grown nanometer carbon fibre powder.
The plasticizer is the compound of phthalic anhydride and paraffin oil;Wherein, phthalic anhydride and paraffin oil Mass ratio is 1:1.2.
Above-mentioned electromagnetism interference strand material, including following preparation process:
(1) formula rate is pressed, ABS resin, polyamide, ethylene propylene diene rubber and plasticizer are added in mixing machine and mixed It closes, 18min is stirred with the speed of 220r/min, obtains mixture A;
(2) formula rate is pressed, silane coupling agent, the polypropylene of maleic anhydride grafting and antioxidant 1010 are added to step (1) continue to be stirred until homogeneous in the mixture A obtained by, then then the rotating speed for improving mixing machine will be modified gas phase to 330r/min Growing nano carbon fiber powder, nano aluminium oxide and nano zine oxide are added, and are stirred until homogeneous to get mixture B;
(3) mixture B made from step (2) is added in screw extruder, through melting extrusion, tie rod, it is air-cooled, cut Grain, the strand material for being drying to obtain electromagnetism interference.
After testing, the performance parameter for the electromagnetism interference strand material that prepared by the present invention is as follows:Tensile strength is 16.9- 17.5MPa, magnetic conductivity 108-115H/m.

Claims (5)

1. a kind of electromagnetism interference strand material, which is characterized in that be made of the raw material of following parts by weight:ABS resin 30-45 Part, 10-18 parts of polyamide, 6-10 parts of ethylene propylene diene rubber, modified 2.4-3.6 parts of gas-phase grown nanometer carbon fibre powder, It is 4.5-10 parts of nano aluminium oxide, 0.8-1.2 parts of nano zine oxide, 0.9-1.6 parts of silane coupling agent, 9-13 parts of plasticizer, compatible 1.5-3.2 parts of agent, 0.7-1.1 parts of antioxidant 1010;Wherein, the preparation method of the modified gas-phase grown nanometer carbon fibre is:
A certain amount of gas-phase grown nanometer carbon fibre is added in the reaction vessel for filling dimethyl sulfoxide (DMSO) organic solvent, is placed in Sonic oscillation 50-60min at 55-65 DEG C in the ultrasonic cleaning instrument of 40-50KHz, mass fraction is then added into reaction solution is Obtained mixed solution is placed in the ultrasonic cleaning instrument of 40-50KHz at 65-75 DEG C by the polyvinyl alcohol water solution of 25-30% again Sonic oscillation 2-4h, by mixed solution horizontal centrifuge with the rotating speed centrifugation point of 3500-4500r/min after sonic oscillation From obtaining lower sediment, being put into baking oven 60-80 DEG C, drying to constant weight to get modified gas-phase grown nanometer carbon fibre powder.
2. a kind of electromagnetism interference strand material according to claim 1, which is characterized in that the modified vapor phase growth is received The mass ratio of rice carbon fiber powder and nano aluminium oxide is 1:
(1.8-3.2)。
3. a kind of electromagnetism interference strand material according to claim 1, which is characterized in that the plasticizer is adjacent benzene two The compound of formic anhydride and paraffin oil;Wherein, the mass ratio of phthalic anhydride and paraffin oil is 1:(0.8-1.5).
4. a kind of electromagnetism interference strand material according to claim 1, which is characterized in that the compatilizer is maleic acid It is one or more in the POE that the polypropylene of acid anhydride grafting, the polyethylene of maleic anhydride grafting, maleic anhydride are grafted.
5. a kind of electromagnetism interference strand material according to any one of claims 1-4, which is characterized in that including following Preparation process:
(1) formula rate is pressed, ABS resin, polyamide, ethylene propylene diene rubber and plasticizer are added in mixing machine and mixed, 10~20min is stirred with the speed of 180~250r/min, obtains mixture A;
(2) formula rate is pressed, silane coupling agent, compatilizer and antioxidant 1010 are added to the mixture A relayings obtained by step (1) Continue and be stirred until homogeneous, then then the rotating speed for improving mixing machine will be modified gas-phase grown nanometer carbon fibre powder to 280~360r/min End, nano aluminium oxide and nano zine oxide are added, and are stirred until homogeneous to get mixture B;
(3) mixture B made from step (2) is added in screw extruder, through melting extrusion, tie rod, air-cooled, pelletizing, It is drying to obtain the strand material of electromagnetism interference.
CN201810551383.XA 2018-05-31 2018-05-31 A kind of electromagnetism interference strand material and preparation method thereof Pending CN108659449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810551383.XA CN108659449A (en) 2018-05-31 2018-05-31 A kind of electromagnetism interference strand material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810551383.XA CN108659449A (en) 2018-05-31 2018-05-31 A kind of electromagnetism interference strand material and preparation method thereof

Publications (1)

Publication Number Publication Date
CN108659449A true CN108659449A (en) 2018-10-16

Family

ID=63774981

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810551383.XA Pending CN108659449A (en) 2018-05-31 2018-05-31 A kind of electromagnetism interference strand material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN108659449A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111393839A (en) * 2020-03-20 2020-07-10 苏州杰源精密机械有限公司 Wear-resistant corrosion-resistant electromagnetic-beam-resistant material and preparation method thereof
CN112210212A (en) * 2020-10-12 2021-01-12 昆山康玛斯电子科技有限公司 Anti-electromagnetic interference electronic wire harness material and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103554790A (en) * 2013-10-31 2014-02-05 合肥得润电子器件有限公司 Modified low-density polyethylene insulating material for household appliance wiring harness
CN106380704A (en) * 2016-08-31 2017-02-08 合肥邦立电子股份有限公司 Flex-resistant vehicle USB2.0 connecting wiring harness outer sheath material
CN106883551A (en) * 2017-03-24 2017-06-23 合肥羿振电力设备有限公司 A kind of power equipment electromagnetic shielding material and preparation method thereof
CN107903574A (en) * 2017-12-27 2018-04-13 苏州康姆普机械有限公司 A kind of high-low temperature resistant anti-aging harness

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103554790A (en) * 2013-10-31 2014-02-05 合肥得润电子器件有限公司 Modified low-density polyethylene insulating material for household appliance wiring harness
CN106380704A (en) * 2016-08-31 2017-02-08 合肥邦立电子股份有限公司 Flex-resistant vehicle USB2.0 connecting wiring harness outer sheath material
CN106883551A (en) * 2017-03-24 2017-06-23 合肥羿振电力设备有限公司 A kind of power equipment electromagnetic shielding material and preparation method thereof
CN107903574A (en) * 2017-12-27 2018-04-13 苏州康姆普机械有限公司 A kind of high-low temperature resistant anti-aging harness

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111393839A (en) * 2020-03-20 2020-07-10 苏州杰源精密机械有限公司 Wear-resistant corrosion-resistant electromagnetic-beam-resistant material and preparation method thereof
CN112210212A (en) * 2020-10-12 2021-01-12 昆山康玛斯电子科技有限公司 Anti-electromagnetic interference electronic wire harness material and preparation method thereof

Similar Documents

Publication Publication Date Title
CN103525005B (en) The preparation method of the high heat conduction ternary of low sizing content nano-micro structure epoxy composite material
CN105504453B (en) A kind of polyolefin composite insulating material of high thermo-oxidative stability and preparation method thereof
CN103467917B (en) The composite filler of modification is filled the resistance to preparation method who punctures epoxy composite material
CN104387671B (en) A kind of preparation method of PA6/PP/ CNT High performance nanometer composite material
CN105086161B (en) A kind of halogen-free flame-retardant composite material and preparation method thereof
CN111793247B (en) Carbon material and preparation method and application thereof
CN108659449A (en) A kind of electromagnetism interference strand material and preparation method thereof
Nie et al. Effect of carbon nanofiber (CNF) silanization on the properties of CNF/epoxy nanocomposites
CN106633390B (en) A kind of ground-buried high voltage power cable modified polypropene enhancing corrugate sheath pipe and preparation method thereof
CN103275396A (en) Special material for heat conducting and insulating power cable protective casing, and production technology thereof
CN107090129B (en) Mesophase pitch-based graphite fiber/polypropylene composite material and preparation method thereof
CN102924910A (en) Method of preparing high-performance glass-fiber reinforced polyamide conductive composite
CN109251402A (en) Fire-retardant electromagnetic shielding thermoplastic elastomer (TPE) nanocomposite of one kind and preparation method thereof
CN110128834A (en) A kind of extra-high voltage composite insulator and preparation method thereof
CN108707308A (en) A kind of fire-retardant electromagnetism interference strand material and preparation method thereof
CN108795043A (en) A kind of new-energy automobile Insulation anticorrosive wire harness sheath material and preparation method thereof
CN111393839A (en) Wear-resistant corrosion-resistant electromagnetic-beam-resistant material and preparation method thereof
CN116574355A (en) Insulating flame-retardant copper core cable and preparation method thereof
CN108659532A (en) A kind of new-energy automobile high-voltage wiring harness sheath material and preparation method thereof
CN107603120A (en) A kind of preparation method of mica condenser casing plastic
CN108659455A (en) A kind of new-energy automobile electromagnetism interference wire harness sheath material and preparation method thereof
CN107793679B (en) Core-shell nanoparticle/polyvinylidene fluoride composite material and preparation method thereof
CN102558545B (en) Conductive polyphenylene oxide resin polymerization method
CN108117742A (en) High-strength abrasion-proof type automobile using bellows and preparation method thereof
CN109354737A (en) A kind of high heat sink material and preparation method thereof for electronic product

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
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20181016