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A polyether ether ketone fiber composite paper with electromagnetic shielding performance and preparation method thereof

A polyetheretherketone fiber and polyetheretherketone technology, which is applied in the field of polyetheretherketone fiber composite paper and its preparation, can solve the problems of low paper performance, easy agglomeration of carbon nanotubes, limited addition content, and poor paper-forming properties. , to achieve uniform conductivity, improve electromagnetic shielding performance, and good mechanical strength.

Active Publication Date: 2021-08-24
SINO HIGH CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In view of this, in order to solve the technical problems of PEEK fiber paper in the prior art, such as poor paper-forming property, low paper performance, easy agglomeration of carbon nanotubes and limited addition content in the impregnation spraying liquid of the paper, the present invention provides an electromagnetic Polyether ether ketone fiber composite paper with shielding performance and preparation method thereof

Method used

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  • A polyether ether ketone fiber composite paper with electromagnetic shielding performance and preparation method thereof
  • A polyether ether ketone fiber composite paper with electromagnetic shielding performance and preparation method thereof
  • A polyether ether ketone fiber composite paper with electromagnetic shielding performance and preparation method thereof

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preparation example Construction

[0057] The preparation method of the polyether ether ketone fiber paper with electromagnetic shielding performance of the present invention, the steps are as follows:

[0058] Step 1. Preparation of polyether ether ketone conductive fiber

[0059] 1.1 Dissolve the soluble polymer precursor of polyether ether ketone in an organic solvent first, disperse the multi-walled carbon nanotubes in the organic solvent, and then mix the two evenly by ultrasonic, add acid hydrolysis and wash to neutral ( pH=7) and then dried to obtain multi-walled carbon nanotubes coated with crystalline polyether ether ketone;

[0060] 1.2 The crystalline polyether ether ketone-coated multi-walled carbon nanotubes obtained in step 1.1 are uniformly dispersed in pure polyether ether ketone powder, and the obtained mixed powder is dried, extruded, granulated, and spun to obtain polyether ether ketone. Ether ether ketone conductive fiber;

[0061] Step 2. Preparation of polyether ether ketone fiber base p...

Embodiment 1

[0083] Step 1. Dissolve 0.4g of 1,3 dioxolane polyetheretherketone (prepared by pure polyetheretherketone with a melt index of 81g / 10min) in an organic solvent (NMP or DMAC), and dissolve 20g of multi-walled carbon nano Disperse the tube (length 1-2μm) in an organic solvent (NMP or DMAC), and then mix the two evenly by ultrasonic, add 24mL concentrated hydrochloric acid (mass fraction: 35%) for hydrolysis, wash with water to pH=7, and then dry to obtain crystalline Multi-walled carbon nanotubes coated with polyether ether ketone;

[0084] Disperse 5g of crystalline polyetheretherketone-coated multi-walled carbon nanotubes uniformly in 495g of pure polyetheretherketone powder (melt index: 81g / 10min), dry in an oven at 120°C for 2h-4h, and use a twin-screw to rotate Moment rheometer extrusion granulation, the dried pellets are added to the high-temperature spinning machine, the pellets are melted and plasticized in the barrel of the extruder, and then enter the melt metering pum...

Embodiment 2

[0090] Embodiment 2 chooses the fiber segment of 3mm, 6mm length, joins respectively to concentration and is 1.5 * 10 -3 mol / L Triton X-100 solution, stirring to loosen and disperse the fibers into a single state, and then drying to obtain polyether ether ketone conductive fiber segments. Disperse the mass ratio of 3mm polyetheretherketone conductive fiber segment: 6mm polyether ether ketone conductive fiber segment: aramid 1313 fiber = 40%: 52%: 8% in 0.02% polyethylene oxide polywater solution, stirring at 4000 rpm After 75 minutes, fiber slurry was obtained. The rest of the preparation of polyetheretherketone fiber composite paper in Example 2 is the same as in Example 1.

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Abstract

A polyether ether ketone fiber composite paper with electromagnetic shielding performance and a preparation method thereof belong to the technical field of composite paper. The invention solves the problems of poor paper-forming property and low paper performance of the polyether ether ketone fiber paper in the prior art, easy agglomeration of carbon nanotubes in the impregnation spraying liquid of the paper and limited addition content, and the like. In the preparation method of the fiber composite paper of the present invention, the polyetheretherketone soluble polymer precursor is used to coat the multi-walled carbon nanotubes, and then the crystalline polyetheretherketone-coated multi-walled carbon nanotubes are used as spinning fillers Conductive polyether ether ketone fibers are prepared, polyether ether ketone conductive fiber paper is prepared by using the conductive polyether ether ketone fibers, and finally the conductive fiber paper is sprayed with an impregnation spraying liquid to obtain polyether ether ketone fiber composite paper with electromagnetic shielding performance. The fiber composite paper has good mechanical strength, heat resistance, heat dissipation, flame retardancy, voltage resistance and electromagnetic shielding performance, and can be used in high temperature electromagnetic shielding protection, electrical insulation and other fields.

Description

technical field [0001] The invention belongs to the technical field of composite paper, and in particular relates to a polyether ether ketone fiber composite paper with electromagnetic shielding performance and a preparation method thereof. Background technique [0002] Polyether ether ketone (PEEK for short) is the most excellent variety of polyarylether ketone polymers. PEEK has high modulus, high strength, high toughness, impact resistance, fatigue resistance, flame retardancy, and High temperature, corrosion resistance, high electrical insulation, radiation resistance, creep resistance and other excellent properties. PEEK fibers are produced by high-temperature melt spinning, and have been successfully applied in high-tech fields such as aerospace, aviation, nuclear energy, information, communications, electronic appliances, petrochemicals, machinery manufacturing, and automobiles. Therefore, the development of functional polyether ether ketone fiber paper is a necessar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H13/26D21H13/22D21H19/14D21H19/24D01F1/09D01F6/94D01D5/08D01D5/12D21J5/00D21H23/50D21H25/00D21H25/02D21H25/04H05K9/00
CPCD01D5/08D01D5/12D01F1/09D01F6/94D21H13/22D21H13/26D21H19/14D21H19/24D21H23/50D21H25/005D21H25/02D21H25/04D21J5/00H05K9/009
Inventor 栾加双丛鑫王贵宾张淑玲张梅杨砚超吴同华王晟道盖须召
Owner SINO HIGH CHINA
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