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Permanent conductive polyetheretherketone (PEEK) board and preparation method thereof

A permanent, conductive carbon technology, applied in the field of engineering plastics, can solve the problems that the performance cannot meet the quality requirements of the middle and high-end application fields, the product volume and surface resistance are unstable, and the market demand depends on imports, etc., so as to avoid internal pores or voids. Phenomenon, ensure consistent density and uniformity, good effect of resistance value uniformity

Inactive Publication Date: 2018-11-13
DONGGUAN NOEGEM PLASTIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The permanent conductive PEEK sheet with excellent performance is temporarily vacant in the domestic sheet industry product field, and the market demand is dependent on imports. The main technical difficulty lies in the volume of the product produced by using traditional conductive carbon powder or carbon fiber in the traditional formula and using the traditional extrusion process. And the surface resistance is unstable, the uniformity is poor, and the performance cannot meet the quality requirements of the middle and high-end application fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This example provides a method for preparing a permanent conductive PEEK board. The specific steps are: Step 1: Place polyether ether ketone resin and conductive carbon material microchips or carbon nanotubes at 150°C for 2 hours to dry; Step 2 : Weigh each raw material according to the ratio of 77% polyether ether ketone resin, 20% conductive carbon material microchip, 2% silane coupling agent, 0.5% heat stabilizer, and 0.5% lubricant; step 3: mix polyether ether Put the ketone resin into the biconical mixing bucket, add the silane coupling agent and stir for 13 seconds; Step 4: Put the rest of the raw materials into the biconical mixing bucket and stir for 50 seconds at a speed of 80 rpm; Step 5: Put the stirred The material is poured into the twin-screw granulator for the first granulation, the temperature is controlled at 400°C, and the discharged material is cooled and transported by an air-cooled crawler conveyor; Step 6: Pour the granules that have been granulated...

Embodiment 2

[0023] The difference between Embodiment 2 and Embodiment 1 is: according to the ratio of 87% of polyether ether ketone resin, 10% of conductive carbon material microchip, 1.7% of silane coupling agent, 1% of heat stabilizer, and 0.3% of lubricant Each raw material was weighed; the temperature of the screw sleeve of the twin-screw extruder was controlled at 330°C, the temperature of the sleeve of the single-screw extruder was controlled at 400°C, and the mold temperature was controlled at 250°C. Other parts are the same as those in Embodiment 1, and will not be repeated here.

Embodiment 3

[0025] This example provides a method for preparing a permanent conductive PEEK board. The specific steps are: step 1: place polyetheretherketone resin and carbon nanotubes at 130 °C for 4 hours to dry; step 2: press polyether ether ketone 95% resin, 3% carbon nanotubes, 1% silane coupling agent, 0.5% heat stabilizer, 0.5% lubricant and weigh each raw material; step 3: put polyether ether ketone resin into the mixing tank, Add silane coupling agent and stir for 1 minute; Step 4: Put all the materials into the mixing bucket and stir for 30 seconds at a speed of 60 rpm; Step 5: Pour the stirred materials into a twin-screw granulator for granulation, temperature control At 370°C, filter the discharge with a 40-mesh filter, change the screen every 50 minutes, and use an air-cooled crawler conveyor to cool and transport the discharge; Step 6: Use a long-term Diameter ratio (25-35): 1 The single-screw extruder is used to produce finished sheet products. The sleeve temperature of the...

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Abstract

The invention relates to the field of engineering plastics, and particularly discloses a permanent conductive polyetheretherketone (PEEK) board, composed of PPEK resin, conductive carbon microchips, asilane coupling agent, a heat stabilizer and a lubricant. A preparation method comprises the following steps: drying the PEEK resin and the conductive carbon material microchips, weighing the raw materials in ratio, putting the PEEK resin into a biconical stirring bucket, adding the silane coupling agent, stirring, putting the remaining raw materials into the biconical stirring bucket, stirring,pouring the stirred materials into a twin-screw grit maker for granulation for the first time, pouring grains obtained from granulation for the first time into a vertical mixing tank with hot air drying function, then uniformly drying, carrying out granulation for the second time, discharging and filtering through a sieve, drying filtered grains, and making a sheet with a single-screw extruder. The permanent conductive PEEK board has stable resistance and better uniformity, greatly reduces the addition amount of conductive filler materials and achieves the same excellent electric conduction effect.

Description

technical field [0001] The invention relates to the field of engineering plastics, and specifically discloses a permanent conductive PEEK board and a preparation method thereof. Background technique [0002] The permanent conductive PEEK sheet with excellent performance is temporarily vacant in the domestic sheet industry product field, and the market demand is dependent on imports. The main technical difficulty lies in the volume of the product produced by using traditional conductive carbon powder or carbon fiber in the traditional formula and using the traditional extrusion process. And the surface resistance is unstable and the uniformity is poor, and the performance cannot meet the quality requirements of the middle and high-end application fields. Contents of the invention [0003] In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provide a permanent conductive PEEK board and a preparation method thereo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/16C08L23/30C08K13/04C08K7/00C08K7/24C08K7/06C08K5/5435B29D7/01
CPCB29D7/01C08K2201/001C08K2201/011C08L61/16C08L2201/04C08L23/30C08K13/04C08K7/00C08K3/041C08K7/06C08K5/5435
Inventor 袁斌德
Owner DONGGUAN NOEGEM PLASTIC PROD
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