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Method for reducing metal impurities in poly(aryl ether ketone) polymer

A polyaryletherketone and metal impurity technology is applied in the field of reducing metal impurities in polyaryletherketone, which can solve the problem of high metal impurity content and achieve the effects of reducing metal impurities, reducing content and improving product quality

Active Publication Date: 2012-11-07
ZHEJIANG PFLUON TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the present situation of polyaryletherketone production, the present invention provides an economical, effective and easy purification method of polyaryletherketone to solve the problem of high metal impurity content in polyaryletherketone polymers

Method used

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  • Method for reducing metal impurities in poly(aryl ether ketone) polymer

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Take 2 g of hydroxyethylidene diphosphonic acid and add it to 400 ml of distilled water to prepare an aqueous solution of hydroxyethylidene diphosphonic acid (mass concentration: 0.5%). Take 130g of pre-crushed polyether ether ketone powder with a particle size of 0.05-0.2mm, put it into a 1000ml three-necked glass bottle, and add the prepared aqueous solution of hydroxyethylidene diphosphonic acid into the three-necked glass bottle. Put the three-neck glass bottle into the heating mantle, install the stirring device, start the stirrer, and start to heat up. When the temperature reached 60°C, the heating was stopped, and after stirring was continued for 1 hour, the aqueous solution was filtered off. Wash the treated material with 500ml of distilled water, wash 2 to 5 times, and check the conductivity of the washing water. When the conductivity is less than 20μS / cm, put the polyether ether ketone powder into the oven, set the temperature at 140°C, and dry After 4 hours,...

Embodiment 2

[0025] According to the method of Example 1, except that the polyether ether ketone was changed to 80 g, after the treatment, a polyarylether ether ketone sample CPAEK-2 with low metal impurity content was obtained.

Embodiment 3

[0027] According to the method of Example 1, except that hydroxyethylidene diphosphonic acid was changed to 3 g (mass concentration: 0.75%), after treatment, a polyaryletherketone sample CPAEK-3 with low metal impurity content was obtained.

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Abstract

The invention belongs to the technical field of polymer material, and relates to a method, used in a production process, for reducing metal impurities in poly(aryl ether ketone). The method comprises the following steps: 1) purification: fully mixing poly(aryl ether ketone) with hydroxy ethidene diphosphonic acid aqueous solution with mass concentration of 0.1-2% at 40-100 DEG C for 0.5-3 h, wherein time for mixing and stirring is preferably 1-2 h, and filtering; 2) washing: washing the purified poly(aryl ether ketone) with distilled water, until conductivity of the aqueous solution is below 20 muS / cm; and 3) drying: drying the washed poly(aryl ether ketone) at 120-140 DEG C for 4-6 h to obtain poly(aryl ether ketone) with metal impurities removed. The method can not only reduce content of the metal impurities in the poly(aryl ether ketone) and improve product quality; besides the used reagents have excellent chemical stability, small dosage, and no self toxicity or pollution, can be treated with biochemical degradation in a later period of production, and will not harm the environment.

Description

technical field [0001] The invention belongs to the technical field of macromolecular materials, and in particular relates to a method for reducing metal impurities in polyaryletherketone which is carried out synchronously in the production process. Background technique [0002] Polyaryletherketone is a high-performance thermoplastic engineering plastic, which is widely used in aerospace, electronic communication, civil high-tech and medical fields due to its excellent thermal properties, mechanical properties, flame retardancy, dielectric properties, etc. . At present, polyaryletherketone has become a hot spot in the research field of polymer materials, and its future application will be more extensive. At the same time, with the development of science and technology, the development of new technologies and new fields also put forward higher requirements for polyaryletherketone. [0003] According to the current published patents and literature reports, large-scale produc...

Claims

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Application Information

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IPC IPC(8): C08G65/46C08G8/02
Inventor 史航王锡铭关建安倪国杰付水龙
Owner ZHEJIANG PFLUON TECH CO LTD
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