Tensile property sample preparation device of ultra-high modulus carbon fiber multifilament and sample preparation method

A technology of tensile performance and carbon fiber, which is applied in the field of ultra-high modulus carbon fiber multifilament tensile performance sample preparation device and sample preparation, can solve the problems of fiber damage, large dispersion, and low tensile strength test value, and achieve Avoid fiber damage, improve accuracy, and ensure consistent results

Active Publication Date: 2020-02-07
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a sample preparation device and a sample preparation method for the tensile properties of low-damage ultra-high modulus carbon fiber multifilament, the sample preparation device can effectively solve the problem of ultra-high During the production process of modulus carbon fiber multifilament tensile specimens, there were technical problems such as low tensile strength test values ​​and large dispersion caused by a large amount of fiber damage. The prepared multifilament tensile specimens had a smooth appearance and stable tensile test results. Suitable for high-strength high-modulus polyacrylonitrile carbon fibers with ultra-high modulus and high thermal conductivity mesophase pitch-based carbon fibers

Method used

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  • Tensile property sample preparation device of ultra-high modulus carbon fiber multifilament and sample preparation method
  • Tensile property sample preparation device of ultra-high modulus carbon fiber multifilament and sample preparation method
  • Tensile property sample preparation device of ultra-high modulus carbon fiber multifilament and sample preparation method

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preparation example Construction

[0043] The embodiment of the present invention also provides a method for preparing a sample of ultra-high modulus carbon fiber multifilament tensile properties, using a pre-wound ultra-high modulus carbon fiber multifilament Glue solution is automatically added dropwise, then the dipped carbon fiber multifilament is cured in an oven, and the reinforcing sheet is pasted for tensile testing. Specifically include the following steps:

[0044] Step 1. Wind and fix the ultra-high modulus carbon fiber on the fiber positioning frame 3-1 in the auxiliary positioning system, hang it into the fiber hanger 3-2, and place it in the glue recovery tank 3- on the sample delivery car 3-4 3, move to the position directly below the triaxial support frame 1-3 through the ground rail 3-5. Press each axial movement button on the controller 1-1 in the precise control system to adjust the glue dispensing head 2-1 in the automatic dispensing system to the fiber on the fiber frame hanger 1-2 in the ...

Embodiment 1

[0053] Wrap and fix the M55J polyacrylonitrile-based carbon fiber multifilament of Japan Toray Co., Ltd. on the fiber positioning frame 3-1, hang it into the fiber hanger 3-2, and place it in the glue recovery tank 3-3 on the sample delivery car 3-4 The upper position is moved to just below the triaxial support frame 1-3 through the ground rail 3-5. Press each axial movement button on the controller 1-1 in the precision control system, and adjust the dispensing head 2-1 to the fiber positioning winding frame 3-1 on the fiber frame hanger 3-2, so that the dispensing The rightmost end of the glue head 2-1 corresponds to the first groove of the fiber positioning winding frame 3-1; start the operation button of the peristaltic pump 2-2, adjust the flow rate to 100ml / min, and make the dipping solution (100 parts by mass four shrink Glyceryl diaminodiphenylmethane, 80 parts by mass of Nadic anhydride and 2 parts by mass of 2,4,6-three (dimethylaminomethyl) phenol, 150 parts of aceto...

Embodiment 2

[0055] Wrap and fix the M60J polyacrylonitrile-based carbon fiber multifilament of Japan Toray Co., Ltd. on the fiber positioning frame 3-1, hang it into the fiber hanger 3-2, and place it in the glue recovery tank 3-3 on the sample delivery car 3-4 The upper position is moved to just below the triaxial support frame 1-3 through the ground rail 3-5. Press each axial movement button on the controller 1-1 in the precision control system, and adjust the dispensing head 2-1 to the fiber positioning winding frame 3-1 on the fiber frame hanger 3-2, so that the dispensing The rightmost end of the glue head 2-1 corresponds to the first groove of the fiber positioning winding frame 3-1; start the operation button of the peristaltic pump 2-2, adjust the flow rate to 100ml / min, and make the dipping solution (100 parts by mass three shrink Glyceryl triisocyanate, 70 parts by mass of dodecenyl succinic anhydride and 2 parts by mass of benzyldimethylamine and 100 parts of acetone) flow into...

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Abstract

The invention relates to a tensile property sample preparation device of an ultra-high modulus carbon fiber multifilament and a sample preparation method, and belongs to the technical field of material property testing. The tensile property sample preparation device of the ultra-high modulus carbon fiber multifilament includes a precision control system, an automatic glue dispensing system and anauxiliary positioning system. The sample preparation method comprises the following steps of: placing a pre-wound ultra-high modulus carbon fiber multifilament frame on a sample preparation glue dispensing device, and automatically adding a glue solution through the precision control system; then placing the glue-dipped carbon fiber multifilament in an oven for curing; and pasting a reinforcing sheet for tensile testing. The invention solves the problem of high damage and brittle fracture of fibers encountered during a manual glue-dipping process of ultra-high modulus carbon fibers, and prepares multifilament tensile sample strips with smooth appearance. The tensile property sample preparation device of the ultra-high modulus carbon fiber multifilament and the sample preparation method disclosed by the invention have important popularization and application prospects in the engineering development and production of the ultra-high modulus carbon fibers and composite materials thereof, and high thermal conductivity mesophase pitch-based carbon fibers and composite materials thereof.

Description

technical field [0001] The invention relates to an ultra-high modulus carbon fiber multifilament tensile performance sample preparation device and a sample preparation method, belonging to the technical field of material preparation and performance testing. Background technique [0002] Ultra-high modulus carbon fiber (≥500GPa) has excellent characteristics such as high specific modulus, high specific strength, and good dimensional stability. It is an irreplaceable core material for the main structure, functional structure, protective structure and auxiliary structure of spacecraft. The development trend of aerospace materials. Ultra-high modulus carbon fibers include polyacrylonitrile-based carbon fibers with extremely high tensile elastic modulus and mesophase pitch-based carbon fibers with high thermal conductivity, such as the series of high-strength and high-modulus carbon fibers such as M55J and M65J from Toray Corporation of Japan and Cytec from the United States. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/31
CPCG01N1/28G01N1/31
Inventor 朱世鹏杨云华冯志海张灏
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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