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Poly(aryl ether-ketone) random copolymer containing hexafluoroisopropylidene group and preparation thereof

A technology of random copolymer and hexafluoroisopropane, applied in the field of polymer material preparation

Inactive Publication Date: 2009-07-08
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult for traditional polyaryletherketone to meet these requirements, so it is necessary to modify it to reduce its dielectric constant, improve its dielectric properties, and broaden the application field of polyaryletherketone

Method used

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  • Poly(aryl ether-ketone) random copolymer containing hexafluoroisopropylidene group and preparation thereof
  • Poly(aryl ether-ketone) random copolymer containing hexafluoroisopropylidene group and preparation thereof
  • Poly(aryl ether-ketone) random copolymer containing hexafluoroisopropylidene group and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add bisphenol AF2.5 × 10 -2 mol, 4,4'-difluorobenzophenone 3.0×10 -2 mol, phenolphthalein 0.5×10 -2 mol, anhydrous potassium carbonate 6.0×10 -2 mol, 50ml sulfolane and 40ml toluene. Heated to 110°C under a nitrogen atmosphere, refluxed for 3 hours to remove water, gradually increased the temperature to completely distill the toluene; then raised the temperature to 220°C, and continued the reaction for 6 hours. The reactant was poured into water for precipitation, then dissolved in chloroform, precipitated with methanol, and dried to obtain white flocculent polyaryletherketone random copolymer P1.

[0016] The yield of polyaryletherketone random copolymer P1 is 92%, and the logarithmic viscosity η inh It is 0.60dl / g (at 30°C, dimethylacetamide is used as solvent, the concentration is 0.5g / dl). The thermal performance data of copolymer P1 measured by differential scanning calorimetry (DSC) and thermogravimetric analysis (TG) are shown in attached table 1. Copolymer...

Embodiment 2

[0018] Add bisphenol AF 2.0 × 10 -2 mol, 4,4'-difluorobenzophenone 3.0×10 -2 mol, phenolphthalein 1.0×10 -2 mol, anhydrous potassium carbonate 4.8×10 -2 mol, 50ml sulfolane and 40ml toluene. Heated to 120°C under a nitrogen atmosphere, refluxed for 3 hours to remove water, gradually increased the temperature to completely distill the toluene; then raised the temperature to 220°C, and continued the reaction for 5 hours. The reactant was poured into water for precipitation, then dissolved in chloroform, precipitated with methanol, and dried to obtain white flocculent polyaryletherketone random copolymer P2.

[0019] The productive rate of polyaryletherketone random copolymer P2 is 93%, inherent viscosity (η inh ) is 0.92dl / g (30°C, dimethylacetamide is the solvent, the concentration is 0.5g / dl). The thermal performance data of copolymer P2 measured by differential scanning calorimetry (DSC) and thermogravimetric analysis (TG) are shown in Table 1. Copolymer P2 is made into...

Embodiment 3

[0021] Add bisphenol AF1.5 × 10 -2 mol, 4,4'-difluorobenzophenone 3.0×10 -2 mol, phenolphthalein 1.5×10 -2 mol, anhydrous potassium carbonate 3.6×10 -2 mol, 50ml sulfolane and 40ml toluene. Heated to 130°C under a nitrogen atmosphere, refluxed for 3 hours to remove water, gradually heated up to evaporate toluene completely; then heated to 220°C, and continued to react for 4 hours. The reactant was poured into water for precipitation, then dissolved in chloroform, precipitated with methanol, and dried to obtain white flocculent polyaryletherketone random copolymer P3.

[0022] The productive rate of polyaryletherketone random copolymer P3 is 91%, inherent viscosity (η inh ) is 0.86dl / g (30°C, dimethylacetamide is the solvent, the concentration is 0.5g / dl). The thermal performance data of copolymer P3 measured by differential scanning calorimetry (DSC) and thermogravimetric analysis (TG) are shown in Table 1. Copolymer P3 is made into a film with a thickness of 0.4 mm. The...

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Abstract

The invention discloses a preparation method for a polyarylether random copolymer containing a hexafluoroisopropyl group. The preparation method comprises the following steps: taking bisphenol AF, phenolphthalein and 4,4-difluoro benzophenone as reaction monomers, taking potassium carbonate as a salifying agent, and preparing and obtaining the new polyarylether random copolymer containing the hexafluoroisopropyl group through a nucleophilic substitution polycondensation reaction in sulfolane. The prepared random copolymer has good dissolvability, thermal stability, mechanic properties and a low dielectric constant. In addition, the raw materials can be easily obtained; and the preparation method is simple and is suitable for the industrialized production. The polyarylether random copolymer containing the hexafluoroisopropyl group has good application prospect in the fields of functional structural materials, high temperature resistant materials, high temperature resistant separation films, solvent type coatings, microelectronics and the like.

Description

technical field [0001] The invention belongs to the field of polymer material preparation, and in particular relates to a hexafluoroisopropyl group-containing polyaryletherketone random copolymer and a synthesis preparation method thereof. The present invention uses bisphenol AF and phenolphthalein as main raw materials to carry out polymerization reaction with 4,4'-difluorobenzophenone through nucleophilic polycondensation reaction, and prepares a series of polymers with different contents of hexafluoroisopropane group in the molecular chain. Polyaryletherketone random copolymer. The preparation method has higher yield, and the obtained random copolymer has a wider range of inherent logarithmic viscosity, and its glass transition temperature rises monotonously with the increase of the proportion of phenolphthalein, and is a high-performance polymer material. Background technique [0002] Polyaryletherketone has excellent heat resistance, mechanical properties, corrosion re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/40
Inventor 陈建定姜振玉翁盛光
Owner EAST CHINA UNIV OF SCI & TECH