Preparation method of polyether ketone/sulfone high-temperature resistant material

A polyether ketone and high temperature resistant technology, applied in the field of high temperature resistant material preparation, can solve problems such as product performance decline, and achieve the effects of improving quality, reducing production cost and reasonable molecular weight distribution

Inactive Publication Date: 2012-03-28
KINGFA SCI & TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem that the existing polyether ketone / sulfone type high temperature resistant material preparation method is difficult to match the shortage of product performance degradation due to the change of material properties during the preparation process, and to provide a polyether ketone / sulfone type high temperature resistant material preparation method

Method used

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  • Preparation method of polyether ketone/sulfone high-temperature resistant material
  • Preparation method of polyether ketone/sulfone high-temperature resistant material
  • Preparation method of polyether ketone/sulfone high-temperature resistant material

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Example 1 Preparation of polyether ether ketone by sulfolane system

[0038]Add 49Kg sulfolane solvent, 3.303Kg hydroquinone, 6.677Kg4,4'-difluorobenzophenone and 3.5Kg anhydrous sodium carbonate in the first reaction kettle made of 50L enamel, take hot water as heating medium at 90 Under the condition of ℃, after mixing for 30 minutes with a propulsive enamel stirring paddle at a speed of 200 r / min, after all the monomers were dissolved, a mixed material with a viscosity of 38 mPa·S was obtained. Transfer the mixed material to the second reaction kettle made of 50L enamel, use 200°C heat conduction oil as the heating medium, stir with a plate and frame paddle stirrer coated with polytetrafluoroethylene at 150 rpm, and use 2.5L xylene as the After the water-carrying agent is fully water-carrying, the material with a viscosity of 127mPa·S is obtained, and the material is put into the third reaction kettle made of 50L stainless steel, and the heat transfer oil is used as ...

Embodiment 2 2

[0045] Example 2 Preparation of polyether ether ketone ketone by diphenyl sulfone system

[0046] Add 35.49Kg diphenylsulfone, 7.497Kg4, 4'-dihydroxybenzophenone, 7.713Kg4, 4'-difluorobenzophenone and 3.9Kg anhydrous sodium carbonate in the first reaction kettle made of 50L enamel, Water vapor at 160°C was used as the heating medium to feed into the inner coil of the kettle, and a flat-bladed enamel stirring paddle was used to mix at a speed of 180 rpm for 30 minutes until the monomers were completely dissolved, and a mixed material with a viscosity of 44mPa·S was obtained. Transfer the mixed materials into the second reaction kettle made of 50L stainless steel, use heat conduction oil at 220°C as the heating medium, stir with a PTFE-coated inclined-blade paddle stirrer at 120 rpm, and use high-purity nitrogen as protection After the gas and the generated water are taken out to a certain extent, the material enters another 50L stainless steel second reaction kettle to continue...

Embodiment 3 2

[0053] Example 3 Preparation of polyether ether ketone by diphenyl sulfone system

[0054] Add 40Kg of diphenyl sulfone solvent, 6.606Kg of hydroquinone, 13.354Kg of 4,4'-difluorobenzophenone and 7.0Kg of anhydrous sodium carbonate into the first reaction kettle made of 50L enamel, and use hot water as the heating medium Under the condition of 120°C, after mixing for 30 minutes with a propulsive enamel stirring paddle at a speed of 200 rpm, after all the monomers were dissolved, a mixed material with a viscosity of 52 mPa·S was obtained. Transfer the mixed material into the second reaction kettle made of 50L enamel, use heat conduction oil at 260°C as the heating medium, stir with a plate-and-frame paddle stirrer coated with polytetrafluoroethylene at 150 rpm, and use 2.5L xylene as the heating medium. After the water-carrying agent and water are completely carried out, the material with a viscosity of 850mPa·S is obtained, and the material is put into the third reaction kettl...

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Abstract

The invention discloses a preparation method of a polyether ketone / sulfone high-temperature resistant material, which comprises the following steps that: firstly, a reactive monomer, a solvent and an inorganic alkali are put into a first reactor, are mixed at a temperature of 40 to 90 DEG C by stirring, and are dissolved; secondly, the mixture is transferred to a second reactor, is added with a water-carrying agent, and is stirred at a temperature of 150 to 280 DEG C to be subjected to salt formation dehydration; and a material after being subjected to salt formation dehydration is introducedinto a third reactor, and is stirred at a temperature of 230 to 330 DEG C to be subjected to polymerization to obtain a product. The synthesis process of the polyether ketone / sulfone material is reacted in three reactors with different temperatures, so that an intermediate product prepared in each step is more sufficient and uniform, the obtained product has a gel content reduced to less than 3% and molecular weight distribution which is more reasonable and reaches the range of 2.42 to 2.45 without changing the comprehensive performance of the product, and thereby the quality of the resin product is improved; and the preparation method is suitable for continuous production, and production cost reduction, energy consumption reduction in a production process and stable quality of the obtained product are achieved.

Description

technical field [0001] The invention relates to the field of preparation of high temperature resistant materials, in particular to a preparation method of polyether ketone / sulfone type high temperature resistant materials. technical background [0002] The preparation method of polyether ketone / sulfone high-temperature-resistant special engineering plastics requires special process requirements, including sufficient salt formation; end groups after polymerization into macromolecules are inactive groups; relatively narrow molecular weight distribution; viscosity change range of the polymerization system Large, the agitator can ensure the adaptability of various viscosity ranges, etc. Only by meeting this special requirement can we hope to prepare high-quality engineering plastics. For a long time, the domestic preparation of polyetherketone / sulfone high-temperature-resistant special engineering plastics has used a single polymerization reactor to complete the entire polymeriz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/02C08G75/23
Inventor 代惊奇曾祥斌曹民饶先花宁凯军姜苏俊蔡彤旻刘奇祥
Owner KINGFA SCI & TECH CO LTD
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