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A kind of preparation method and application of hyperbranched sulfone polymer

A polymer and reaction technology, which is applied in the field of preparation of hyperbranched sulfone polymers, can solve the problems of large temperature difference, difficulty in uniform melting, and difficult molding of materials, so as to increase the reaction rate, increase the glass transition temperature and viscous flow temperature, shape-preserving effect

Active Publication Date: 2021-07-23
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the viscous flow temperature of traditional sulfone polymers is only above 320°C. When blending and molding with polyimide, bismaleimide, polybenzoheterocyclic polymers and other materials, it is easy to have large temperature differences and difficult to melt uniformly. , making the material difficult to form

Method used

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  • A kind of preparation method and application of hyperbranched sulfone polymer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Catalyst preparation:

[0060] Add 21.8g of pyromellitic dianhydride to 153g of N,N-dimethylformamide, stir and heat up to 50°C, after the dianhydride is dissolved, add 6.4g of methanol, and control the material temperature at 80°C until the reaction solution is transparent; Add 1.74g potassium fluoride powder, 1.74g cesium chloride powder, 0.44g aluminum trifluoride, 0.11g polyethylene glycol and continue to react at this reaction temperature for 40 minutes, cool down to 50°C, add 0.11g deionized water, 5 Add 0.11g of simethicone after 1 minute, and adjust the rotation speed to 5 rpm; naturally cool down to room temperature. The prepared solution was mixed with 24.5g of pure MDI and stirred rapidly to foam. After the molding was stable, it was placed in a vacuum oven, and vacuum-dried at 150°C and 340°C and -0.098MPa for 2h and 3h, respectively. After taking it out, carry out high-temperature carbonization at 570° C. for 3 hours in a high-temperature furnace and pulve...

Embodiment 2

[0069] Catalyst preparation:

[0070] Add 29.4g of biphenyltetracarboxylic dianhydride to 235g of N,N-dimethylacetamide, start stirring and heat up to 50°C, after the dianhydride is dissolved, add 6.7g of methanol, and control the material temperature at 90°C until the reaction solution is transparent; Add 2.94g of potassium fluoride powder, 2.94g of cesium chloride, 2.94g of aluminum trifluoride, 0.24g of polyethylene glycol and continue to react at this reaction temperature for 50 minutes, cool down to 50°C, add 0.18g of deionized water for 5 minutes Then add 0.26g of simethicone oil, adjust the speed to 10 rpm; cool down to room temperature naturally. The prepared solution was mixed with 17.2g of TDI and stirred rapidly to foam. After the molding was stable, it was placed in a vacuum oven, and vacuum dried at 160°C and 280°C and -0.098MPa for 3h and 3h, respectively. After taking it out, carry out high-temperature carbonization at 600° C. for 4 hours in a high-temperature ...

Embodiment 3

[0079] Catalyst preparation:

[0080] Add 32.2g of benzophenone tetracarboxylic dianhydride to 290g of N-methylpyrrolidone, stir and heat up to 50°C, after the dianhydride is dissolved, add 7.0g of methanol, control the material temperature at 95°C until the reaction liquid is transparent; add 4.83g Potassium fluoride powder, 5.15g cesium fluoride, 4.83g aluminum trifluoride, 0.32g polyethylene glycol continue to react at this reaction temperature for 60 minutes, cool down to 50°C, add 0.16g deionized water, and add 0.48 g simethicone oil, adjusted to a speed of 12 rpm; naturally cooled to room temperature. The prepared solution was mixed with 17.4g of TDI and stirred rapidly to foam. After the molding was stable, it was placed in a vacuum oven, and vacuum-dried at 200°C and 290°C and -0.099MPa for 1h and 3h, respectively. After taking it out, carry out high-temperature carbonization at 700° C. for 5 hours in a high-temperature furnace and pulverize to prepare carbonized BTDA...

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Abstract

The invention provides a preparation method and application of a hyperbranched sulfone polymer. The preparation method is to prepare dihydric phenol disodium salt under the protection of an inert gas by using dihydric phenol, sodium hydroxide and hydrocarbons, and then adding 4 , 4'-dichlorodiphenyl sulfone solution, when the reaction is coming to an end, add polyhalogenated alkanes to the reaction kettle to continue the reaction, and finally obtain a sulfone polymer. The sulfone polymer is used for blending and molding with high-temperature thermosetting materials or pseudo-thermoplastic materials to prepare blended molding materials based on hyperbranched sulfone polymers. The preparation method has faster reaction speed, the prepared hyperbranched sulfone polymer has narrow molecular weight distribution, large molecular weight, higher viscous flow temperature and better heat resistance; the prepared blend material has good molding effect and can obtain good Impact strength.

Description

technical field [0001] The invention belongs to the field of special engineering plastics, and in particular relates to a preparation method and application of a hyperbranched sulfone polymer. Background technique [0002] Sulfone polymer is a special engineering plastic that can be used for a long time at 170-210°C. Due to its high temperature resistance and easy processing, it is widely used in aircraft, electronic connectors, water treatment, medical equipment, electronic cigarettes and other fields . However, in the field of high-temperature resistant materials, sulfone polymers belong to a class of materials with lower operating temperatures. The traditional sulfone polymer is usually reacted by dihydric phenol, dichlorodiphenyl sulfone and potassium carbonate in an aprotic polar solvent. A hydrocarbon solvent is added to the system as a water-carrying agent to remove the water generated during the reaction in time, and finally A sulfone polymer solution is obtained. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G75/23C08G75/20C08L79/08C08L81/06C08L79/04
CPCC08G75/20C08G75/23C08L79/04C08L79/08C08L81/06C08L79/085
Inventor 张鑫邹敏仇伟陈海波
Owner WANHUA CHEM GRP CO LTD
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