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Poly-aryl ether ketone performed polymers terminated with phenyl-ethynyl, preparation method therefor and crosslinked materials using the same

A technology of polyaryletherketone and phenylacetylene, which is applied in the field of polyaryletherketone prepolymers to prepare high-performance cross-linked materials, can solve the problems of high processing temperature, difficulty, and low use temperature, and achieve excellent processing performance

Inactive Publication Date: 2004-12-29
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermoplastic engineering plastics have excellent processing properties, but the use temperature is low, and the relative processing temperature is relatively high; thermosetting engineering plastics have high use temperature, but there are certain difficulties in processing castings with fixed dimensions and shapes

Method used

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  • Poly-aryl ether ketone performed polymers terminated with phenyl-ethynyl, preparation method therefor and crosslinked materials using the same
  • Poly-aryl ether ketone performed polymers terminated with phenyl-ethynyl, preparation method therefor and crosslinked materials using the same
  • Poly-aryl ether ketone performed polymers terminated with phenyl-ethynyl, preparation method therefor and crosslinked materials using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Add 39.8g (0.18mol) of p-bromobenzoyl chloride and 135ml of fluorobenzene in an 8-fold excess to a three-necked flask equipped with mechanical stirring, reflux with water device, hydrogen chloride gas absorption device and nitrogen inlet and outlet. After cooling in an ice bath to 0°C, add 33.8g (0.25mol) of catalyst anhydrous aluminum trichloride, rise to room temperature and stir for about 15 minutes, then heat to reflux temperature and stir for 3 to 6 hours. After cooling to room temperature, the mixture was stirred for 6-16 hours and the reaction was completed. After the reaction is over, add 20-50ml of distilled water dropwise at a rate of 1 drop per second to remove excess aluminum trichloride, remove excess fluorobenzene with a fluorobenzene / water azeotropic system, and then use 10% by weight NaOH base The solution was boiled and washed twice, and further boiled and washed with distilled water three times until the filtrate was neutral, dried, and recrystallized ...

Embodiment 2

[0056] 1.008 g of triphenol monomer (0.008 mol) was dissolved in 30 ml of DMAC. In the 250ml three-neck flask equipped with mechanical stirring, reflux with water device and nitrogen inlet and outlet, add 7.2g of fluorine-containing alkyne monomer (0.024mol), 2.5g of catalyst anhydrous potassium carbonate, 150ml of DMAC and 40ml of toluene, After the system was heated to reflux with water for 2 hours, the pre-prepared DMAC solution of triphenol monomer was dropped into the reaction system at a rate of 4 seconds / drop, and the reflux was kept with water, and the reaction was continued for 24 hours after the dropwise addition. The reaction solution was discharged into 2000ml of HCl aqueous solution, and after standing still, the dark yellow precipitate was filtered, dried, washed twice with ethanol, dried in an oven, and the obtained crude product was recrystallized by DMAC to obtain phenylacetylene-terminated branch pre The milky white product of the aggregate was 6.80 g (yield:...

Embodiment 3

[0058] Contrary to the order of addition of raw materials in Example 2, other embodiments are the same, thus causing a very high concentration of triphenols at the moment when the alkyne monomer is dripped in: 7.2g of fluorine-containing alkyne monomer (0.024mol) is dissolved in 80ml of In DMAC, pre-add 1.008g triphenol monomer (0.008mol), 2.5g of catalyst anhydrous potassium carbonate, 150ml of DMAC and 40ml of toluene in a 250ml three-neck flask equipped with mechanical stirring, reflux with water device and nitrogen inlet and outlet After the system was heated to reflux with water for 2 hours, the DMAC solution of the pre-configured triphenol monomer was dropped into the reaction system at a speed of 3 seconds / drop, and the reflux was kept with water, and the reaction was continued for 12 hours after the dropwise addition. The reaction solution was discharged into 2000ml of HCl aqueous solution, and after standing still, the dark yellow precipitate was filtered, dried, washe...

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Abstract

The present invention is one new kind of phenylethynyl blocked polyaryl ether ketone pre-polymer and its preparation process and application in preparing high performance cross-linking material. Halogen substitured benzophenone compound is first prepared and then made to coupled with phenyl acetylene under the catalysis of Pd catalyst to prepare fluoric phenylethynyl blocked monomer, which is made to take nucleophilic substitution reaction with the branch unit of triphenol to synthesize the polyaryl ether ketone pre-polymer as phenylethynyl blocked branched compound. The branched compound may perform heat cross-liking reaction of the phenylethynyl radical at high temperature. The pre-polymer has excellent performance of forming spatial network structure via cross-linking.

Description

Technical field: [0001] The invention belongs to the field of polymer materials, and in particular relates to a novel phenylene vinylene-terminated polyaryletherketone prepolymer, a preparation method of the prepolymer and an application of the prepolymer in preparing high-performance crosslinking materials. Background technique: [0002] With the development of science and technology, people have higher and higher requirements for materials, and general-purpose plastics can no longer meet people's increasingly extensive and urgent requirements, which makes some polymer chemists work towards the preparation of polymers with excellent performance develop. High-performance engineering plastics are special plastics with excellent performance developed in the 1960s and widely used in various engineering fields. These plastics are generally classified according to the processing method, which can be divided into two categories, one is thermoplastic engineering plastics, which ca...

Claims

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Application Information

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IPC IPC(8): C08G65/40
Inventor 周宏伟杨薇陈春海张万金吴忠文
Owner JILIN UNIV
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