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Method for purifying aryloxy polyphosphazene

A technology of aryloxy polyphosphazene and purification method, which is applied in the field of purification of aryloxy polyphosphazene and aryloxy polyphosphazene, and can solve problems such as high content of "impurities", inability to vulcanize at high temperature, and easy degradation , to achieve the effect of low cost, satisfying industrial application, and simple steps

Inactive Publication Date: 2013-10-02
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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  • Method for purifying aryloxy polyphosphazene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1, respectively weigh chemically pure absolute ethanol and acetone according to the ratio of 20 / 80 by weight, and mix them fully in a clean container to obtain a mixed solvent;

[0024] Step 2: Set the temperature of the kneading chamber of the kneader to 40°C. After constant temperature, weigh about 1 / 2 of the volume of the kneader and knead the aryloxypolyphosphazene in the kneader, and use a pipette to inject about 1 / 2 of the volume of the kneader. 1 / 3 of deionized water, kneading for 5 minutes, remove the upper aqueous solution, use a pipette to remove the aqueous solution above the aryloxy polyphosphazene in the kneader, then repeat the injection of deionized water, repeat the above process until the pH of the removed aqueous solution is When the value is 7, stop washing;

[0025] Step 3: Inject anhydrous ethanol accounting for about 1 / 2 of the volume of the kneader into the washed aryloxy polyphosphazene and knead for 5 to 7 minutes, and use a pipette to remo...

Embodiment 2

[0033] Step 1, respectively weigh chemically pure absolute ethanol and acetone according to the ratio of 50 / 50 by weight, and mix them fully in a clean container to obtain a mixed solvent;

[0034] Step 2: Set the temperature of the kneading chamber of the kneader to 40°C. After constant temperature, weigh about 1 / 2 of the volume of the kneader and knead the aryloxypolyphosphazene in the kneader, and use a pipette to inject about 1 / 2 of the volume of the kneader. 1 / 2 of deionized water, knead for 5 minutes and then remove the upper aqueous solution, use a pipette to remove the aqueous solution above the aryloxy polyphosphazene in the kneader, then repeat the injection of deionized water, repeat the above process until the pH of the removed aqueous solution is When the value is 7, stop washing;

[0035] Step 3: Inject anhydrous ethanol accounting for about 1 / 3 of the volume of the kneader into the washed aryloxy polyphosphazene and knead for 5-7 minutes, and remove the solution...

Embodiment 3

[0041]Step 1, respectively weigh chemically pure absolute ethanol and acetone according to the ratio of 40 / 60 by weight, and mix them fully in a clean container to obtain a mixed solvent;

[0042] Step 2: Set the temperature of the kneading chamber of the kneader to 40°C. After constant temperature, weigh about 1 / 2 of the volume of the kneader and knead the aryloxypolyphosphazene in the kneader, and use a pipette to inject about 1 / 2 of the volume of the kneader. 2 / 5 deionized water, after kneading for 5 minutes, remove the upper aqueous solution, use a pipette to remove the aqueous solution above the aryloxy polyphosphazene in the kneader, then repeat the injection of deionized water, repeat the above process until the pH of the removed aqueous solution is When the value is 7, stop washing;

[0043] Step 3: Inject anhydrous ethanol accounting for about 1 / 2 of the volume of the kneader into the washed aryloxy polyphosphazene and knead for 5 to 7 minutes, and use a pipette to re...

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Abstract

The invention relates to aryloxy polyphosphazene and provides a method for purifying the aryloxy polyphosphazene. According to the method, 'impurities' in the aryloxy polyphosphazene are removed by a solvent swelling extraction method. Inorganic substances and organic substances in the aryloxy polyphosphazene are respectively dissolved by washing, preliminary alcohol washing, absolute ethyl alcohol and acetone compounded solution washing and secondary alcohol washing, and finally the absolute ethyl alcohol and water in sizing material are removed by a vacuum kneading technology. The method for purifying the aryloxy polyphosphazene has simple steps, low cost, and short total purification time, and the obtained aryloxy polyphosphazene solves the problems of degradation and incapability of crosslinking, and can meet the requirement on industrialized application.

Description

technical field [0001] The invention belongs to the field of polymer materials and 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 arranged alternately with single and double bonds to form a main chain structure, and the side groups connected to phosphorus atoms are aryloxy groups. Its structural formula is as follows: [0003] [0004] In the formula: [0005] R 1 and R 2 respectively or [0006] The bond length and bond angle between 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 phosphorus and nitrogen content in its molecular structure, the aryloxy group of the phosph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G79/04
Inventor 曹继平张佩王建中王志锋康冰马亚南白小平陈竚陆洪林师文斌曹磊
Owner XIAN MODERN CHEM RES INST
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