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Light polyether-ether-ketone or composite material thereof with different degrees of crystallinity and preparation method thereof

A composite material board and polyetheretherketone technology, which is applied in the field of polymer material preparation, can solve the problems of difficult gas saturation, single cell size, and small foam expansion ratio, and achieve enhanced foam strength, improved bottlenecks, and high foaming The effect of magnification

Active Publication Date: 2017-09-19
SINO HIGH CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention overcomes the shortcomings of low foaming ratio, single cell size, and difficulty in gas saturation in the preparation of crystalline polyether ether ketone or its composite material foams in the past, and effectively prepares foams with light weight and high foaming ratio by controlling process parameters materials, broaden the application field of polyether ether ketone, and improve the bottleneck of existing crystalline polyether ether ketone or its composite material foaming technology

Method used

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  • Light polyether-ether-ketone or composite material thereof with different degrees of crystallinity and preparation method thereof
  • Light polyether-ether-ketone or composite material thereof with different degrees of crystallinity and preparation method thereof
  • Light polyether-ether-ketone or composite material thereof with different degrees of crystallinity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put polyetheretherketone pellets (Changchun Jida Special Plastic Engineering Research Co., Ltd., MFI=25g / 10min) into a mold with a size of 4cm×10cm×3mm, and press molding at a temperature of 365°C and 5MPa to obtain a plate , and cut to size.

[0029] A polyetheretherketone plate (MFI=25g / 10min, crystallinity 26%, the size of the plate is 3cm×3cm×3mm) was placed in the autoclave, and the autoclave was sealed after being fixed. Inject CO into the autoclave using a high-pressure metering pump 2 Gas and exhaust the air in the autoclave until the autoclave is filled with CO 2 gas, and make the pressure in the kettle reach the set saturation pressure of 15MPa. Put the autoclave into the heating jacket, and turn on the temperature controller to make the temperature of the autoclave reach the set saturation temperature of 330° C., and the saturation time is 1 h. Control the pressure relief rate through the pressure relief valve to remove CO in the kettle 2Gas, the depressu...

Embodiment 2

[0032] Put polyetheretherketone pellets (Changchun Jida Special Plastic Engineering Research Co., Ltd., MFI=16g / 10min) into a mold with a size of 4cm×10cm×3mm, and press molding at a temperature of 365°C and 5MPa to obtain a plate , and cut to size.

[0033] A polyetheretherketone sheet (MFI=16g / 10min, crystallinity 26%, size of the sheet is 3cm×3cm×3mm) was placed in an autoclave, and the autoclave was sealed after being fixed. Inject CO into the autoclave using a high-pressure metering pump 2 Gas and exhaust the air in the autoclave until the autoclave is filled with CO 2 gas, and make the pressure in the kettle reach the set saturation pressure of 20MPa. Put the autoclave into the heating jacket, and turn on the temperature controller to make the temperature of the autoclave reach the set saturation temperature of 330°C. The saturation time is 1h, and the pressure relief rate is controlled by the pressure relief valve to remove the CO in the kettle 2 Gas, the depressuri...

Embodiment 3

[0036] 0.1 g of polyethersulfone resin (PES) was dissolved in 50 mL of N,N-dimethylacetamide (DMAc) solvent. 8 g of multi-walled carbon nanotubes (MCNTs) were dispersed in 300 mL of N,N-dimethylacetamide (DMAc) to form a suspension. The two solutions were mixed under stirring, and ultrasonicated at 50° C. for 8 h. The ultrasonic suspension was discharged into distilled water and washed 8 times with distilled water. After suction filtration, the filter cake was dried under vacuum at 120°C for 4 hours to obtain polyethersulfone resin-coated modified multi-walled carbon nanotubes (PES @MWCNTs).

[0037] Weigh 3wt% PES@MWCNTs and 97wt% PEEK powder ((Changchun Jida Special Plastic Engineering Research Co., Ltd., MFI=45g / 10min), fully premix in a high-speed mixer (26000r / min), use Huck Extruder (HAAKEMiniLab) carries out melt blending and extrudes granulation. Setting processing temperature is 380 ℃, and screw speed is 80r / min. Then pellet is put into a mold that size is 4cm * 10c...

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Abstract

The invention discloses light polyether-ether-ketone or a composite material thereof with different degrees of crystallinity thereof and a preparation method thereof and belongs to the technical field of preparation of high molecular materials. The preparation method comprises the following steps of: putting polyether-ether-ketone or the composite material thereof in a near critical or supercritical CO2 fluid, swelling and permeating the same at 320-360 DEG C and the saturated pressure of 5-30MPa for 30min to 3h, then quickly unloading to constant pressure and cooling to room temperature; and repeating the operations for 1-3 times and finally performing annealing treatment to obtain the light polyether-ether-ketone or the composite material thereof with different degrees of crystallinity, different bubble dimensions and high foaming rates. The preparation method disclosed by the invention overcomes defects that crystallized polyether-ether-ketone or the composite material thereof prepared in the prior art is small in foaming swelling rate, single in bubble dimension, hard to saturate gas and the like, expands the application field of polyether-ether-ketone, and improves the bottleneck of existing crystallized polyether-ether-ketone or the composite material thereof in the foaming technology.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to a light polyether ether ketone with different crystallinity or its composite material plate and a preparation method. Background technique [0002] Polyether ether ketone (PEEK) is a polymer whose main chain is composed of a large number of benzene rings, ether bonds and carbonyl repeated links. Because of this special molecular structure, it has high temperature resistance, high strength, chemical corrosion resistance and creep resistance. and high flame retardancy etc. As a special engineering plastic, PEEK is not only successfully applied in the field of national defense and military, but also widely used in many fields such as aerospace, electrical and electronic, and medical equipment. In order to further broaden the application fields of PEEK and its composite materials and give full play to its advantages as special engineering plastics, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/12C08J9/36C08L61/16C08K9/10C08K7/24C08K7/06
CPCC08J9/122C08J9/36C08J2203/06C08J2203/08C08J2361/16C08K7/06C08K7/24C08K9/10C08K2201/011C08L61/16Y02P20/54
Inventor 张淑玲吴同华周玉琴姜博涛王贵宾姜振华
Owner SINO HIGH CHINA
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