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A polyetheretherketone-based synergistic flame-retardant nanocomposite material and its preparation method

A nano-composite material, polyether ether ketone technology, applied in the field of polyether ether ketone-based synergistic flame-retardant nano-composite materials and its preparation, can solve the problems affecting the comprehensive performance of polyether ether ketone and a wider range of applications, poor performance etc. to achieve excellent thermal stability and thermal oxidation resistance, high mechanical properties, and high electrical insulation

Active Publication Date: 2020-07-31
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polyether ether ketone has many advantages as a thermoplastic special engineering plastic, its performance in terms of flame retardancy is relatively poor, especially when it encounters fire, it will produce melt droplets and heat will produce crystallization zone slip and incomplete combustion. The smog phenomenon produced is precisely because of this, which affects the comprehensive performance and wider range of applications of polyetheretherketone.

Method used

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  • A polyetheretherketone-based synergistic flame-retardant nanocomposite material and its preparation method
  • A polyetheretherketone-based synergistic flame-retardant nanocomposite material and its preparation method
  • A polyetheretherketone-based synergistic flame-retardant nanocomposite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Add octaphenyl cage siloxane and polyether ether ketone superfine powder with a particle size of less than 25 μm (produced by Changchun Jida Special Plastic Engineering Research Co., Ltd.) into the anhydrous ethanol dispersion, ultrasonically disperse for 24 hours, and then spin dry , the prepared mixed powder; the prepared mixed powder and the surface-modified nano-calcium carbonate with a particle size of 40-80nm are mixed into the polyether ether ketone powder with a particle size of 50-100 μm, and stirred at high speed for 20 minutes to obtain a synergistic flame-retardant Polyether ether ketone powder; the powder is extruded by twin-screw, and the heating temperatures in the five zones are respectively, the temperature in the first zone is 260°C, the temperature in the second zone is 350°C, the temperature in the third zone is 380°C, the temperature in the fourth zone is 385°C, and the temperature in the fifth zone is 380°C. The zone temperature is 390°C, the screw ...

Embodiment 2

[0049] Add octaphenyl cage siloxane and polyether ether ketone superfine powder with a particle size of less than 25 μm (produced by Changchun Jida Special Plastic Engineering Research Co., Ltd.) into the anhydrous ethanol dispersion, ultrasonically disperse for 24 hours, and then spin dry , the prepared mixed powder; the prepared mixed powder and the surface-modified nano-calcium carbonate with a particle size of 40-80nm are mixed into the polyether ether ketone powder with a particle size of 50-100 μm, and stirred at high speed for 20 minutes to obtain a synergistic flame-retardant Polyether ether ketone powder; the powder is extruded by twin-screw, and the heating temperatures in the five zones are respectively, the temperature in the first zone is 260°C, the temperature in the second zone is 350°C, the temperature in the third zone is 380°C, the temperature in the fourth zone is 385°C, and the temperature in the fifth zone is 380°C. The zone temperature is 390°C, the screw ...

Embodiment 3

[0056] Add octaphenyl cage siloxane and polyether ether ketone superfine powder with a particle size of less than 25 μm (produced by Changchun Jida Special Plastic Engineering Research Co., Ltd.) into the anhydrous ethanol dispersion, ultrasonically disperse for 24 hours, and then spin dry , the prepared mixed powder; the prepared mixed powder and the surface-modified nano-calcium carbonate with a particle size of 40-80nm are mixed into the polyether ether ketone powder with a particle size of 50-100 μm, and stirred at high speed for 20 minutes to obtain a synergistic flame-retardant Polyether ether ketone powder; the powder is extruded by twin-screw, and the heating temperatures in the five zones are respectively, the temperature in the first zone is 260°C, the temperature in the second zone is 350°C, the temperature in the third zone is 380°C, the temperature in the fourth zone is 385°C, and the temperature in the fifth zone is 380°C. The zone temperature is 390°C, the screw ...

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Abstract

The invention relates to a polyether-ether-ketone-based synergistic flame-retardant nano composite material. The preparation method of the composite material comprises the following steps: preparing mixed powder from octaphenyl cage-type siloxane and polyether-ether-ketone superfine powder in an ultrasonic dispersion and rotary evaporation drying manner, mixing the mixed powder and surface-modified nano calcium carbonate into the polyether-ether-ketone powder, conducting stirring to obtain powder, extruding the powder by virtue of a double screw, and conducting granulating to obtain granules;and finally, conducting segmented vacuum high-temperature mold pressing on the granules, aond conducting cutting and grinding treatment, wherein the raw materials comprise, in percentage by mass, 10%-89.8% of polyether-ether-ketone powder, 10%-89.8% of polyether-ether-ketone superfine powder, 0.1%-30% of octaphenyl cage-type siloxane and 0.1%-30% of nano calcium carbonate. According to the preparation method disclosed by the invention, the nano particles are uniformly dispersed in a resin matrix and are not agglomerated, octaphenyl cage-type siloxane and nano calcium carbonate synergisticallyplay an intumescent flame-retardant effect, the problem that polyether-ether-ketone melts and drips when meeting fire is solved, and the smoke yield during combustion of polyether-ether-ketone is reduced.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant polymer materials, and in particular relates to a polyetheretherketone-based synergistic flame-retardant nano-composite material and a preparation method thereof. Background technique [0002] One of the main problems in the practical application of polymer materials is that they are flammable, and the amount of heat and smoke generated during the combustion process is large, and toxic gases are released. Fire accidents caused by the combustion of polymer materials seriously endanger the safety of public life and property, and pollute the ecological environment. Therefore, the flame retardancy of polymer materials has been increasingly valued at home and abroad, so flame-retardant polymer materials have become an important part of polymer material science and fire prevention. very urgent research topic. [0003] The flame retardant development of polymer materials has experienced chlorina...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/16C08L83/04C08K3/26C08K9/04
CPCC08K2003/265C08K2201/011C08L61/16C08L2201/02C08L83/04C08K3/26C08K9/08
Inventor 张梅于锐栾加双王贵宾马雯迪董文英王逸龙
Owner JILIN UNIV
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