Polyethersulfone antistatic composite material and preparation method thereof

A composite material and antistatic technology, which is applied in the field of polyethersulfone antistatic composite materials and its preparation, can solve the problem that the specific surface area of ​​carbon nanotubes is large, the excellent performance of carbon nanotubes cannot be fully utilized, and the coupling agent is difficult to play a role And other issues

Inactive Publication Date: 2017-08-29
MIANYANG HONGQI NEW MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, inorganic conductive nanomaterials including carbon nanotubes seriously affect their uniform dispersion in polymers due to their nanometer size, chemical inertness and surface amphiphobic properties, so that the excellent properties of carbon nanotubes cannot be fully utilized. Therefore, There are two core issues in the preparation of polymer / carbon nanotube composites: one is to improve the dispersion of carbon nanotubes in the polymer matrix; the other is to improve the interfacial bonding between carbon nanotubes and polymers.
The disadvantage of this method lies in two points. One is that because carbon nanotubes are inorganic materials, the surface amphobia makes it difficult for the coupling agent to play a role, and it is difficult to improve the interfacial bonding between carbon nanotubes and polymers; Carbon nanotubes have a large specific surface area and are easy to agglomerate, resulting in poor dispersion after blending

Method used

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  • Polyethersulfone antistatic composite material and preparation method thereof
  • Polyethersulfone antistatic composite material and preparation method thereof
  • Polyethersulfone antistatic composite material and preparation method thereof

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preparation example Construction

[0040] Furthermore, the preparation method of the polyethersulfone antistatic composite material: comprises the following steps:

[0041] (1) Take the raw material according to the molar ratio of the raw material: 4,4-dichlorodiphenyl sulfone: 4,4-dihydroxydiphenyl sulfone: potassium hydroxide: sulfolane: toluene=1: 1: 1: 5~6: 1.3~1.5;

[0042] (2) Ultrasonically disperse the acyl chloride carbon nanotubes in a solvent, and then 4,4-dichlorodiphenyl sulfone, 4,4-dihydroxydiphenyl sulfone, solvent, acyl chloride carbon nanotubes, dehydrating agent, catalyst Heating to reflux reaction, wherein the amount of carbonyl chloride carbon nanotubes is 10-15% of the mass of 4,4-dichlorodiphenyl sulfone;

[0043] (3) When the material temperature is 120-160°C, react at a constant temperature for 1-4 hours, then continue to heat up to 170-210°C to react until anhydrous is formed, then evaporate all the dehydrating agent, and continue to heat up to 255-265°C for reaction After 2-4 hours ...

Embodiment 1

[0048] Embodiment 1 carbon nanotube surface acid chloride treatment

[0049] The first step is to acidify the carbon nanotubes: put 0.5g carbon nanotubes into 500ml mixed acid (concentrated sulfuric acid:concentrated nitric acid volume ratio is 3:1) for ultrasonic dispersion for 1 hour, react at 60°C for 24 hours and use After dilution with deionized water and suction filtration, the resulting precipitate was washed with deionized water until the pH value was about 5, and the product was dried in a vacuum oven to obtain surface carboxylated carbon nanotubes (MWNT-COOH). The second step is to add 0.2 grams of carboxylated carbon nanotubes to 200ml of thionyl chloride, then add 2ml of DMF as a catalyst, heat and reflux at 70°C for 24 hours, and use toluene to reflux to take out the thionyl chloride after the reaction. The recovered product in the lower layer was dried in a vacuum oven and then sealed and stored to obtain acid-chlorinated carbon nanotubes (MWNT-COCl). The SEM ph...

Embodiment 2

[0050] Embodiment 2 Preparation of polyethersulfone antistatic composite material

[0051] First, according to the following molar ratio: 4,4-dichlorodiphenyl sulfone: 4,4-dihydroxydiphenyl sulfone: sulfolane: toluene: potassium hydroxide=1: 1: 5: 1.3: 1 Weigh the raw materials, then weigh Take the 4,4-dichlorodiphenyl sulfone mass 10% carbon acyl chloride carbon nanotubes obtained in Example 1 and put them into the solvent sulfolane for ultrasonic dispersion treatment for 10 minutes, then 4,4-dichlorodiphenyl sulfone, 4,4 - Put dihydroxydiphenyl sulfone, sulfolane, carbon nanotube acyl chloride, toluene, and potassium hydroxide together into a reaction kettle with a reflux device, stir and heat under nitrogen protection. When the material temperature is 155°C, react at constant temperature for 2 hours, then continue to heat up to 190°C until no water is formed, then distill all the toluene, continue to heat up to 255°C for 2.5 hours, and then dilute and discharge. The materi...

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Abstract

The present invention relates to an antistatic polyether sulfone composite material and a preparation method therefor. The molecular structure of the composite material is represented by formula (I), where (a) is a carbon nanotube, and n is a polymerization degree ranging from 50 to 150. The composite material can be widely used in the fields of electronic and electrical appliances, mine mining and war industries, and different types of granular materials and various sections and workpieces can be provided according to market demands.

Description

technical field [0001] The invention relates to a polyethersulfone antistatic composite material and a preparation method thereof, belonging to the field of polymer materials. technical background [0002] Polyethersulfone resin (PES) is a thermoplastic polymer material with excellent comprehensive properties developed by the British ICI company in 1972. It is one of the few special engineering plastics that have been applied. It has excellent heat resistance, physical and mechanical properties, flame retardant properties, etc., especially has outstanding advantages such as continuous use at high temperatures and stable performance in environments with rapid temperature changes, and has been widely used in many fields. . [0003] However, during the application of polyethersulfone resin, due to its electrical insulation properties, the surface of the material is prone to static electricity, and this accumulation of static electricity is easy to damage various devices and el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G75/23C08K3/02C08G65/40
CPCC08G65/40C08J5/005C08J2381/06
Inventor 曾学良汪学军
Owner MIANYANG HONGQI NEW MATERIAL SCI & TECH
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