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A kind of purification method of aryloxy polyphosphazene

A technology of aryloxypolyphosphazene and purification method, which is applied in the field of purification of aryloxypolyphosphazene and aryloxypolyphosphazene, and can solve problems such as easy degradation, high content of "impurities", and inability to vulcanize at high temperature. , to achieve simple steps, low cost, solve the effect of degradation and inability to use cross-linking

Inactive Publication Date: 2015-08-26
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a purification method for aryloxy polyphosphazene, which solves the problems that the high content of "impurities" in aryloxy polyphosphazene cannot be vulcanized and easily degraded at high temperature

Method used

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  • A kind of purification method of aryloxy polyphosphazene

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Step 1. Set the temperature of the kneading chamber of the kneader to 40°C. After the constant temperature, weigh the aryloxy polyphosphazene which accounts for about 1 / 2 of the volume of the kneader and put it into the kneader. Use a pipette to inject about 1% of the volume of the kneader. / 2 deionized water, knead for 5 minutes, remove the upper aqueous solution, repeat the above process until the pH of the removed aqueous solution is 7, stop washing;

[0019] Step 2: Use a pipette to suck up absolute ethanol and pour it into the kneader. The absolute ethanol occupies 1 / 2 of the volume of the kneader. After kneading for 5 minutes, remove the absolute ethanol solution, then pour the absolute ethanol solvent, and repeat the alcohol washing. Stop after 400min;

[0020] Step 3: Turn on the vacuum system in the normal kneading state of the kneader, and obtain purified aryloxy polyphosphazene after kneading for 240 minutes.

[0021] Using liquid chromatograph, according to the ge...

Embodiment 2

[0025] Step 1. Set the temperature of the kneading chamber of the kneader to 20°C. After the constant temperature, weigh the aryloxy polyphosphazene about 1 / 2 of the volume of the kneader and put it into the kneader, and use a pipette to inject about 5 of the volume of the kneader. / 12 deionized water, knead for 5 minutes, remove the upper aqueous solution, repeat the above process until the pH of the removed aqueous solution is 7, stop washing;

[0026] Step 2: Use a pipette to suck up absolute ethanol and pour it into the kneader. The absolute ethanol occupies 5 / 12 of the volume of the kneader. After kneading for 7 minutes, remove the absolute ethanol solution, then inject the absolute ethanol solvent, and repeat the alcohol washing Stop after 340min;

[0027] Step 3: Turn on the vacuum system in the normal kneading state of the kneader, and obtain purified aryloxy polyphosphazene after kneading for 240 minutes.

[0028] The purified aryloxy polyphosphazene obtained by the same ga...

Embodiment 3

[0030] Step 1. Set the temperature of the kneading chamber of the kneader to room temperature. After the constant temperature, weigh the aryloxy polyphosphazene about 1 / 2 of the volume of the kneader and put it into the kneader. Use a pipette to inject about 1 / of the volume of the kneader. 3 deionized water, knead for 5 minutes, remove the upper aqueous solution, repeat the above process until the pH of the removed aqueous solution is 7, stop washing;

[0031] Step 2: Use a pipette to suck up absolute ethanol and pour it into the kneader. The absolute ethanol occupies 1 / 3 of the volume of the kneader. After kneading for 6 minutes, remove the absolute ethanol solution, then pour the absolute ethanol solvent and repeat the alcohol washing Stop after 280min;

[0032] Step 3: Turn on the vacuum system in the normal kneading state of the kneader, and obtain purified aryloxy polyphosphazene after kneading for 240 minutes.

[0033] The purified aryloxy polyphosphazene obtained by the same...

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Abstract

The invention relates to aryloxy polyphosphazene and provides a purifying method for the aryloxy polyphosphazene. In the purifying method, a solvent swelling extraction method is adopted for removal of ''impurities'' in the aryloxy polyphosphazene. Water and absolute ethyl alcohol are respectively adopted for dissolving inorganic matters and organic matters in the aryloxy polyphosphazen, and then the absolute ethyl alcohol and the water in sizing material are removed through use of vacuum kneading technology. The purifying method for the aryloxy polyphosphazene is simple in process and low in cost, and the obtained aryloxy polyphosphazene has high purity. The purifying method can overcome the problem of degradation and the problem that the aryloxy polyphosphazene cannot be cross-linkedly used, and can satisfy industrial application.

Description

Technical field [0001] The invention belongs to the field of polymer materials, relates to aryloxy polyphosphazenes, in particular to a purification method of aryloxy polyphosphazenes. Background technique [0002] Aryloxy polyphosphazene is a new type of inorganic-organic polymer in which phosphorus-nitrogen atoms are alternately arranged with single and double bonds to form a main chain structure, and the side groups attached to the phosphorus atoms are aryloxy groups. Its structural formula is as follows: [0003] [0004] Where: [0005] R 1 And R 2 Respectively or [0006] The bond length and bond angle between the phosphorus and nitrogen atoms on the main chain of aryloxy polyphosphazene are large, and the alternating single and double bonds fail to form a long-range conjugated system, so the main chain has high torsional flexibility. At the same time, the higher content of phosphorus and nitrogen in the molecular structure, and the aryloxy group of the phosphorus side group ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G79/04
Inventor 曹继平张佩赵凤起史爱娟陈泳潘清王明李文杰王明昌陈曼杨彩宁刘红妮张志新白小平
Owner XIAN MODERN CHEM RES INST