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Carbon fiber long fiber reinforced polyether ether ketone matrix composite material and preparation method thereof

A technology of polyetheretherketone multifilament and polyether ether ketone, which is applied in the field of carbon fiber long-fiber reinforced polyetheretherketone-based composite materials and its preparation, can solve difficult fiber dispersion and impregnation effects, difficult to accurately control fiber content, and Suitable for problems such as high-viscosity resins, to achieve the effect of improving mechanical properties and continuity, improving mechanical properties and thermal stability, and reducing pore defects

Active Publication Date: 2021-04-06
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used G-LFT and E-LFT have problems such as unsatisfactory structural design, unsuitability for high-viscosity resins, and difficulty in accurately controlling the content of fibers. It is difficult to achieve good fiber dispersion for carbon fiber long-fiber reinforced polyetheretherketone-based composites. and impregnation effect, the more advanced D-LFT and S-LFT core technologies are monopolized, and domestic research has just started

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The special material for spinning grade polyetheretherketone resin (produced by Changchun Jida Special Plastic Engineering Research Co., Ltd.) with a melt index of 15g / 10min was selected to prepare a polyetheretherketone multifilament with a fineness of 366D / 12F ( Spinning process conditions: the temperature range of each heating zone of the spinning extruder, the first zone is 330°C, the second zone is 370°C, the third zone is 400°C, the fourth zone is 410°C, the fifth zone is 410°C, the sixth zone is 415°C, the seventh zone 415°C, eight zones 410°C, spinning speed 150m / min, fiber draw ratio 1.7:1, post-drawing temperature 210°C), polyether ether ketone multifilament and carbon fiber (T300-12k, Japan Toray company Production) chopped to 50mm to obtain polyetheretherketone PEEK long fibers and carbon fiber CF long fibers; then polyetheretherketone PEEK long fibers and carbon fiber CF long fibers were opened with a comb needle opener (provided by Tianjin University of Tec...

Embodiment 2

[0021] The polyether ether ketone multifilament (polyether ether ketone) with a fineness of 272D / 12F ( Spinning process conditions: the temperature range of each heating zone of the spinning extruder, the first zone is 330°C, the second zone is 370°C, the third zone is 375°C, the fourth zone is 390°C, the fifth zone is 390°C, the sixth zone is 393°C, the seventh zone 395°C, eight zone 395°C, spinning speed 170m / min, fiber draw ratio 2.1:1, post-drawing temperature 155°C), polyetheretherketone multifilament and carbon fiber (T300-12k, Japan Toray company Production) chopped to 50mm to obtain polyetheretherketone PEEK long fibers and carbon fiber CF long fibers; then polyetheretherketone PEEK long fibers and carbon fiber CF long fibers were opened with a comb needle opener (provided by Tianjin University of Technology) , so that bundles of PEEK and CF fibers are expanded into monofilaments, which are transported to the cotton feeding machine (provided by Tianjin University of Te...

Embodiment 3

[0023] The special material for spinning grade polyetheretherketone resin (produced by Changchun Jida Special Plastic Engineering Research Co., Ltd.) with a melt index of 45g / 10min was selected to prepare polyetheretherketone fibers with a fineness of 272D / 12F (spun by spinning) by melt spinning. Silk process conditions: the temperature range of each heating zone of the spinning extruder, the first zone is 330°C, the second zone is 370°C, the third zone is 375°C, the fourth zone is 390°C, the fifth zone is 390°C, the sixth zone is 393°C, and the seventh zone is 395°C ℃, eight zone 395 ℃, spinning speed 170m / min, fiber draw ratio 2.1:1, post-drawing temperature 155 ℃), polyether ether ketone fiber and carbon fiber (T300-12k, Japan Toray company production) Chopped to 50mm to obtain polyetheretherketone PEEK long fibers and carbon fiber CF long fibers; then polyetheretherketone PEEK long fibers and carbon fiber CF long fibers were opened with a comb opener (provided by Tianjin Un...

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Abstract

A carbon fiber long fiber reinforced polyetheretherketone based composite material and a preparation method thereof belong to the technical field of thermoplastic composite materials. The process includes: (1) preparing polyetheretherketone multifilaments with a linear density of 12 to 380D / 12F by melt spinning by using spinning-grade polyetheretherketone special materials; (2) preparing polyetheretherketone multifilaments Shorten the polyetheretherketone long fiber by fiber cutting machine to 30-80mm, and cut the carbon fiber to 20-70mm to obtain the long-fiber carbon fiber; ~70%: 50%~30% of the mass ratio is mixed, carded, laid, and needled to prepare a CF / PEEK composite needle-punched felt preform; (4) the obtained CF / PEEK needle-punched felt preform is Hot pressing on a vacuum hot press, exhausting, cooling, and demoulding to obtain the carbon fiber long fiber reinforced polyetheretherketone based composite material of the present invention. There is no solvent involved in the process, no pollution to the environment, short process flow, higher strength of the prepared composite material and lower aspect ratio of the material.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic composite materials, and in particular relates to a carbon fiber long fiber reinforced polyetheretherketone-based composite material and a preparation method thereof. Background technique [0002] As a new type of composite material that can be designed and recycled repeatedly, long fiber reinforced thermoplastic resin matrix composites (LFT) make up for the shortcomings of poor performance of short fiber reinforcement and high cost of continuous fiber reinforcement. Due to its broad application prospects in recent years It has been widely concerned by domestic and foreign scientific research institutes and industrial circles. The fiber length of traditional short fiber reinforced resin matrix composites (SFT) is generally less than 3 mm, and the fibers are randomly distributed in the resin, which cannot fully exert the reinforcing effect on the resin. In contrast, long fiber reinforced ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/002D04H3/009D04H3/105D04H3/153D01D5/08
CPCD01D5/08D04H3/002D04H3/009D04H3/105D04H3/153
Inventor 张梅赵文砚赵贺栾加双盖须召许治平
Owner JILIN UNIV
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