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Polyethersulfone micropowder, preparation method and application thereof

A technology of polyethersulfone and micropowder, which is applied in the direction of coating, etc., can solve the problems of low purity, high material energy consumption, wide particle size distribution, etc., and achieve the effect of high purity, simple preparation method, and not easy to yellow

Pending Publication Date: 2019-05-03
开封夸克新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide polyethersulfone micropowder, its preparation method and application, so as to solve the technical problems of high energy consumption, wide particle size distribution and low purity of existing domestically produced materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: A kind of polyethersulfone micropowder

[0032] (1) Mix 140g of N-methylpyrrolidone, 20g of deionized water and 25g of ethanol to obtain a mixed solvent;

[0033] (2) Dissolve 10 g of polyethersulfone in the prepared mixed solvent to form polyethersulfone colloidal solution;

[0034] (3) Add polyethersulfone colloidal solution into 205g deionized water with an ordinary disperser at a temperature of 22°C and a dispersion speed of 200r / min, and stir for 10 minutes. Polyethersulfone is suspended in the system in the form of fine powder;

[0035] (4) After centrifugation, filtration and separation, wash the obtained filter cake with deionized water twice its mass, and stir and disperse for 20 minutes;

[0036] (5) Repeat step (4) 2 to 3 times;

[0037] (6) Centrifuge again, filter and separate, and dry the precipitate in an oven at 50°C for 6 hours, until the solid content reaches more than 99%, to obtain polyethersulfone micropowder.

Embodiment 2

[0038] Embodiment 2: A kind of polyethersulfone micropowder

[0039] (1) Mix 120g of N,N-dimethylformamide, 23g of deionized water and 17g of glycerol to obtain a mixed solvent;

[0040] (2) Dissolve 20g of polyethersulfone in the prepared mixed solvent to form polyethersulfone colloidal solution;

[0041] (3) Add the polyethersulfone colloidal solution into 600g deionized water with an ordinary disperser at a temperature of 30°C and a dispersion speed of 150r / min, and stir for 15 minutes. The polyethersulfone is suspended in the system in the form of fine powder;

[0042] (4) After centrifugation, filtration and separation, wash the obtained filter cake with 3 times the mass of deionized water, stir and disperse for 15 minutes;

[0043] (5) Repeat step (4) 2 to 3 times;

[0044] (6) Centrifuge again, filter and separate, and dry the precipitate in an oven at 70°C for 4 hours. The inspection standard for drying is that the solid content is more than 99% to obtain polyethersu...

Embodiment 3

[0045] Embodiment 3: A kind of polyethersulfone micropowder

[0046] (1) Mix 200g of N,N-dimethylacetamide, 20g of deionized water and 10g of propanol to obtain a mixed solvent;

[0047] (2) Dissolve 15g of polyethersulfone in the prepared mixed solvent to form polyethersulfone colloidal solution;

[0048] (3) Add polyethersulfone colloidal solution into 340g deionized water with an ordinary disperser at a temperature of 25°C and a dispersion speed of 180r / min, and stir for 15 minutes. Polyethersulfone is suspended in the system in the form of fine powder;

[0049] (4) After centrifugation, filtration and separation, wash the obtained filter cake with 3 times the mass of deionized water, stir and disperse for 15 minutes;

[0050] (5) Repeat step (4) 2 to 3 times;

[0051] (6) Centrifuge again, filter and separate, and dry the precipitate in an oven at 60°C for 5 hours. The inspection standard for drying is that the solid content is more than 99% to obtain polyethersulfone mi...

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Abstract

The invention discloses polyethersulfone micropowder, a preparation method and an application thereof, and aims to solve the technical problem of high energy consumption, large particle size distribution and low purity of materials produced in our country. The polyethersulfone micropowder is a micropowder prepared by forming a dispersion liquid system having micro-turbid status from polyethersulfone, a mixed solvent and water, then solidifying, separating and drying the system. The preparation method includes: weighing the polyethersulfone, mixed solvent and water according to weight ratio; dissolving the polyethersulfone in the mixed solvent to form a colloid solution; adding the colloid solution to water, uniformly dispersing the mixture, and filtering the mixture to obtain a filter cake; washing the filter cake with water by 2-3 times by mass of the filter cake, uniformly dispersing the filter cake, and filtering the liquid; repeatedly washing the material for 2-3 times; and dryingthe filtered precipitate to obtain the product. The polyethersulfone micropowder is applied to preparation of coating materials. The preparation method is extensive in raw material source, is simple in preparation method and low in energy consumption, is free of pollution and can be extensively applied to the field of high-molecular polymers.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a polyethersulfone micropowder, its preparation method and application. Background technique [0002] Polyethersulfone is a thermoplastic polymer material with excellent comprehensive properties, and it is one of the few special engineering materials currently used. It has the advantages of high heat resistance, creep resistance, high strength, high rigidity and toughness, corrosion resistance, and excellent mechanical properties. It has been widely used in many fields such as aerospace, information, energy, petrochemical, home appliances, and medical treatment. application. [0003] The Chinese patent application number CN201410136633.5 discloses a preparation method of redispersible polyaryl ether sulfone micropowder: firstly, polyaryl ether sulfone is dissolved in a mixed solvent to form a polyaryl ether sulfone solution; the polyaryl ether sulfone The ether sulfone solutio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/16C08J3/05C08L81/06C09D181/06
Inventor 马恒印
Owner 开封夸克新材料有限公司
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