Phenolphthalein polyarylether ketone foam material and preparation method thereof

A polyaryletherketone and foam material technology, which is applied in the field of polyaryletherketone foam materials containing phthalein side groups and its preparation, can solve the problems of low foaming ratio, uneven cell size and the like, and achieves high foaming ratio, The effect of uniform cells and high solubility

Active Publication Date: 2017-06-13
芜湖万隆新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a polyaryletherketone foam material containing phthalein side groups and a preparation method thereof in order to solve the problems of low expansion ratio and non-uniform cell size of the existing polyaryletherketone foam material

Method used

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  • Phenolphthalein polyarylether ketone foam material and preparation method thereof
  • Phenolphthalein polyarylether ketone foam material and preparation method thereof
  • Phenolphthalein polyarylether ketone foam material and preparation method thereof

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preparation example Construction

[0039] The present invention firstly provides a kind of preparation method of polyaryletherketone foam material containing phthalein side group, and this method comprises:

[0040] Step 1: Molding polyaryletherketone containing phthalein side groups on a sulfur press to obtain a cross-linked polyaryletherketone sample containing phthalein side groups;

[0041] Step 2: In the autoclave, place the cross-linked polyaryletherketone sample containing phthalein side groups obtained in step 1 in supercritical CO 2 In the process, the swelling and infiltration are carried out at the saturation temperature of 200-350°C and the saturation pressure of 8-30MPa, the saturation time is 0.5-3h, the pressure is released quickly, and then the foam is taken out from the autoclave and cooled to room temperature to obtain phthalein-containing Side group polyaryletherketone foam material;

[0042] The polyaryletherketone containing phthalein side groups is in an amorphous state.

[0043] According...

Embodiment 1

[0061] Add phenolphthalein (70.7mmol), difluorobenzophenone (70mmol), K 2 CO 3 (80.5mmol), TMS (65.5ml), toluene (35ml), under the condition of nitrogen protection, heat the above mixture to 140°C to azeotropically remove water, keep the temperature for 2h, remove toluene, continue to heat to 220°C for 2.5h, cool down, Add 250ml DMAc to dilute, precipitate in ethanol / water, filter, pulverize the precipitate, and repeatedly boil and wash with deionized water 5 times to remove inorganic salts and residual solvents, and dry to obtain polyaryletherketone (PEK-C ).

[0062] The dried PEK-C sample (Mw=13.5×10 4 , PDI=2.8) Molding in a sulfur press, temperature 360 ​​° C, pressure 5 MPa, stop heating after 30 minutes, after the temperature drops below 100 ° C, release the pressure and take out the sample, thickness 4mm.

[0063] Place the prepared PEK-C sample in an autoclave, seal the autoclave, and use high-pressure CO 2 Purge the autoclave 2-3 times, the purpose is to remove t...

Embodiment 2

[0070] The dried PEK-C sample (Mw=13.5×10 4 , PDI=2.8) Molding in a sulfur press, temperature 360 ​​° C, pressure 5 MPa, stop heating after 30 minutes, after the temperature drops to 100 ° C or less, release the pressure and take out the sample, thickness 4 mm.

[0071] Place the dried PEK-C sample in the autoclave, seal the body of the autoclave, and use high-pressure CO 2 Purge the autoclave 2-3 times, the purpose is to remove the air in the cavity, and then inject CO into the autoclave through the pressurization system 2 Gas, control the constant pressure to 10MPa, increase the temperature of the kettle to 290°C, keep the pressure for 2.5h, then quickly reduce the pressure to normal pressure through the pressure reducing valve, the pressure reduction rate is >10MPa, and open the kettle to take out the sample and cool it to room temperature , so as to obtain PEK-C foam samples.

[0072] The sample obtained in Example 2 is quenched with liquid nitrogen, and the section is s...

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Abstract

The invention provides a phenolphthalein polyarylether ketone foam material and a preparation method thereof and belongs to the technical field of processing of high polymer materials. The method comprises the following steps: performing mold pressing on phenolphthalein polyarylether ketone on a vulcanizing press so as to obtain a cross-linked phenolphthalein polyarylether ketone template; swelling and permeating the cross-linked phenolphthalein polyarylether ketone template in supercritical CO2, performing rapid pressure relief, taking out foam from a high-pressure autoclave, cooling to room temperature, thereby obtaining the phenolphthalein polyarylether ketone foam material, wherein the phenolphthalein polyarylether ketone foam material is amorphous. The invention further provides a phenolphthalein polyarylether ketone foam material. The polyarylether ketone foam material disclosed by the invention has the advantages that the carbon dioxide solubility is high, the foaming ratio is high, and foam bubble growth is not limited by a crystalline region; the foam structure can be further controlled by controlling the degree of crosslinking.

Description

technical field [0001] The invention belongs to the technical field of polymer material processing, and in particular relates to a polyaryletherketone foam material containing phthalein side groups and a preparation method thereof. Background technique [0002] Polymer foam materials have the characteristics of light weight, thermal insulation, noise reduction, and impact energy absorption, and have been widely used in daily life and industrial and agricultural production. With the development of high technology, the fields with harsh environments such as national defense, military industry, and aerospace require foam materials to have high temperature resistance, corrosion resistance, and high mechanical strength. Therefore, the development of high-performance foam materials has become an important research direction. [0003] As a special engineering plastic, polyaryletherketone has excellent mechanical and electrical properties, radiation resistance, chemical corrosion re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/12C08J3/24C08L71/10C08G65/40
Inventor 周光远王红华赵继永王志鹏
Owner 芜湖万隆新材料有限公司
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