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Aqueous polyarylethersulphones dispersion liquid and process for preparing same

A technology of polyarylether sulfone and polyarylene ether sulfone, which is applied in the field of water-based polyarylether sulfone dispersion liquid and its preparation, can solve the problem of not completely water-based, low content of polyarylene ether sulfone, and unfavorable environmental protection and other issues to achieve the effect of avoiding pollution and expanding the scope of application

Inactive Publication Date: 2005-09-07
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the background technology is that because it is dissolved in an organic solvent, and the content of polyarylene ether sulfone is very low, it is not completely water-based, which is not conducive to environmental protection

Method used

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  • Aqueous polyarylethersulphones dispersion liquid and process for preparing same
  • Aqueous polyarylethersulphones dispersion liquid and process for preparing same
  • Aqueous polyarylethersulphones dispersion liquid and process for preparing same

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Thoroughly mix 240ml of chloroform with 30ml of methanol, dissolve 4g of polyvinylpyrrolidone (PVP) in the above solution, and dissolve 140g of polyethersulfone in the above mixed solution to prepare a polyethersulfone solution.

[0035] Dissolve 8g of sodium dodecylbenzenesulfonate in 280ml of deionized water; pour the aqueous solution of sodium dodecylbenzenesulfonate into the colloid mill, then slowly add the polyethersulfone solution into the colloid mill, disperse, and obtain poly ether sulfone emulsion.

[0036] Pour the prepared polyethersulfone emulsion containing organic solvent into a 1000 ml three-necked flask equipped with a stirring device and a condensing device, heat it in a water bath, and control the temperature at 55°C for 3 hours and 65°C for 3 hours until no solvent evaporates , and then heated to 85 ° C for 30 minutes. Stop stirring and stop heating to obtain a water-based polyethersulfone dispersion.

Embodiment 2

[0038] Thoroughly mix 240ml of chloroform and 20ml of methanol, and dissolve 90g of polyethersulfone in the above mixed solution to prepare a polyethersulfone solution.

[0039] Dissolve 8 g of sodium dodecylbenzenesulfonate in 280 ml of deionized water. . Pour the aqueous solution of sodium dodecylbenzenesulfonate into the colloid mill, then slowly add the polyethersulfone solution into the colloid mill, and disperse to prepare the polyethersulfone emulsion.

[0040] Pour the prepared polyethersulfone emulsion containing organic solvent into a 1000 ml three-necked flask equipped with a stirring device and a condensing device, heat it in a water bath, and control the temperature at 55°C for 3 hours and 65°C for 3 hours until no solvent evaporates , and then heated to 85 ° C for 30 minutes. Stop stirring and stop heating to obtain a water-based polyethersulfone dispersion.

Embodiment 3

[0042] Thoroughly mix 240ml of chloroform and 10ml of methanol, and dissolve 90g of polyethersulfone in the above mixed solution.

[0043] Dissolve 6 g of sodium dodecylbenzenesulfonate in 280 ml of deionized water. Pour the sodium dodecylbenzenesulfonate aqueous solution into the colloid mill, then slowly add the polyethersulfone solution into the colloid mill for dispersion.

[0044] Pour the prepared polyethersulfone emulsion containing an organic solvent into a 1000 ml three-neck flask equipped with a stirring device and a condensing device, and heat it in a water bath. The temperature control range is 55°C for 2 hours, and 65°C for 3 hours until no solvent evaporates. Then, the temperature was raised to 80°C for 30 minutes. Stop stirring and stop heating to obtain a water-based polyethersulfone dispersion.

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Abstract

The invention relates to water-based polyarylether sulfone dispersion and the preparing method, belonging to the high molecular polymer field.The elementary composition is polyarylideneethersulfone with repetitive units or polyarylideneethersulfone with repetitive units and with side group, the dispersion containing surface active agent, the sodium dodecylbenzene sulfonate.The preparing process comprising putting the polyarylether sulfone into the mixed solution of organic solvent and assisting solvent; preparing emulsion, evaporating the organic solvent and getting the water-based polyarylether sulfone dispersion.Prepared product can be used as heat resisting paint or coating polymer, and can combine with fluoro-resin to prepare coating material. The invention enlarges the application area of the polyarylethersulfone, which is a kind of engineering material, and can recovery the organic solvent during the process, adapted for environmental protection.

Description

technical field [0001] The invention belongs to the field of macromolecular polymers, in particular to a water-based polyarylethersulfone dispersion liquid used for heat-resistant coatings or coating polymers and a preparation method thereof. Background technique [0002] The prior art close to the present invention is CN1116428, which discloses an organic solution of polyethersulfone or molten polyethersulfone. The polyethersulfone micropowder is smooth and spherical, and is sprayed by polyethersulfone organic solution or molten state. Prepared dry. [0003] Micropowders of polyarylene ether sulfone are known per se (published in WO 91 / 00876), and micropowders of polyarylene ether sulfone can also be given a paste by processing polyarylene ether sulfone with a liquid The latter is emulsified in water with vigorous stirring, and then the emulsion is dried to obtain a fine powder. The patent mentions the preparation of polyarylene ether sulfone emulsion (containing organic ...

Claims

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Application Information

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IPC IPC(8): C08G75/23C08J3/07
Inventor 关绍巍张守国姜振华朱强
Owner JILIN UNIV
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