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Polyether ketone resin and method for preparing same by polymerization termination

A technology of polymerization termination and polyether ketone, which is applied in the field of preparation of new polyether ketone resin and its polymerization termination, can solve the problems of difficulty in controlling the melt index of the final product, fast polymerization reaction speed, loss, etc.

Active Publication Date: 2014-08-20
长春吉大特塑工程研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under high temperature conditions, the polymerization reaction speed is fast, the molecular weight increases rapidly, and the melt index of the final product is difficult to control
Even because once the molecular weight of polyether ketone is large, the melt viscosity is too large, so waste that cannot be processed is generated, causing great losses

Method used

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  • Polyether ketone resin and method for preparing same by polymerization termination
  • Polyether ketone resin and method for preparing same by polymerization termination
  • Polyether ketone resin and method for preparing same by polymerization termination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 134.00 g of diphenyl sulfone into a three-necked flask equipped with mechanical stirring and a thermometer, protect it with nitrogen, heat to 160°C, add 44.47 g of 4,4'-difluorodiphenyl ketone, 1.41 g of anhydrous potassium carbonate and anhydrous 25.23g of sodium carbonate water, then heated to 165°C, added 42.84g of p-4,4'-dihydroxybenzophenone, continued to heat to 200°C for 1 hour, gradually raised the temperature to 250°C for 35 minutes, and then reacted for 1 hour at 280°C hours, and finally heated to 320 ° C for 4 hours. A mixture of 0.22 g of phenol and 5 g of diphenylsulfone was then added. After continuing the reaction for 10 minutes, it can be found that the viscosity of the reaction solution no longer increases with the reaction time, which proves that the monophenolic compound can effectively terminate the polymerization reaction. After continuing the reaction for 30 minutes, the product was poured into water. Crush and filter the product with a pulve...

Embodiment 2

[0026] Just change "add the mixture of 0.22g phenol and 5g diphenyl sulfone" in Example 1 to "add the mixture of 0.30g phenol and 5g diphenyl sulfone", and the rest are the same as the method in embodiment 1, and can also obtain the present invention. Polyether ketone ketone polymer. The melt index of the test material is 42g (melt index meter, 400°C, 5 kg pressure). Since the reaction of Example 2 is exactly the same as that of Example 1, only the amount of phenol input at the end of the reaction is different, which proves that the monophenolic compound can break the polyether ketone chain and reduce the molecular weight of the resin. The thermal performance of the material is the same as that of Example 1.

Embodiment 3

[0028] Just change "add the mixture of 0.22g phenol and 5g diphenyl sulfone" in Example 1 to "add 0.22g of phenol", and the rest are the same as the method in Example 1, and the polyether ketone ketone polymer of the present invention can also be obtained . The melt index of the test material is 25g (melt index meter, 400° C., 5 kg pressure), which proves that the monophenolic compound regulates the molecular weight of the resin. The thermal performance of the material is the same as that of Example 1.

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Abstract

The invention relates to polyether ketone resin and a method for preparing the same by polymerization termination and belongs to the technical field of high molecular materials. The molecular weight of polyether ketone resin can be adjusted by the method. The method comprises the following steps: under nitrogen protection and stirring, heating diphenyl sulfone to 100-170 DEG C, adding a fluoro-substituted aromatic monomer and alkali carbonate, heating to 140-180 DEG C and adding a bisphenol monomer, and then carrying out programmed heating; then, adding a terminating reagent monophenol monomer or a mixture of the monophenol monomer and diphenyl sulfone and reacting for 5-120 minutes to obtain a polyether ketone polymer; finally, pouring the polyether ketone polymer into water, smashing the obtained solids by a smasher, and filtering; then, boiling, filtering the dried obtained solids by ethanol or acetone, repeatedly boiling and filtering for 5-6 times; then, boiling and filtering by distilled water and repeatedly boiling and filtering for 5-6 times; and finally, drying in an oven to obtain the refined polyether ketone polymer.

Description

technical field [0001] The invention belongs to the technical field of macromolecular materials, and in particular relates to a novel polyether ketone resin and a preparation method for polymerization termination thereof, through which the molecular weight of the polyether ketone resin can be adjusted. Background technique [0002] Polyaryletherketone is a semi-crystalline heat-resistant polymer. Its crystallinity brings it excellent comprehensive performance. For example, it has excellent heat resistance, hot water resistance, fatigue resistance, radiation resistance, insulation and aging resistance. Its excellent physical and mechanical properties, thermal properties, electrical properties and chemical properties make it widely used in the fields of mechanical instruments, transportation and electronic appliances. [0003] Thermoplastic polyaryletherketone has been commercialized for more than 20 years, and many companies have carried out research and development work. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/48C08G65/40
Inventor 姜振华岳喜贵张海博庞金辉牟建新
Owner 长春吉大特塑工程研究有限公司
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