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A kind of preparation method of environment-friendly ring-crosslinked polyphosphazene

A polyphosphazene and ring-crosslinking technology is applied in the field of preparation of environment-friendly ring-crosslinked polyphosphazene, which can solve problems such as environmental and biological harmful effects, and achieve the effects of simple, environmentally friendly, and good effects.

Inactive Publication Date: 2021-03-19
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that organic solvents and acid binders are required in the current research process of preparing synthetic polyphosphazenes, thereby causing harmful effects on the environment and organisms, and to provide an environmentally friendly ring-crosslinked polyphosphazene and its preparation method

Method used

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  • A kind of preparation method of environment-friendly ring-crosslinked polyphosphazene
  • A kind of preparation method of environment-friendly ring-crosslinked polyphosphazene
  • A kind of preparation method of environment-friendly ring-crosslinked polyphosphazene

Examples

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Effect test

Embodiment 1

[0026] A preparation method of environment-friendly ring-crosslinked polyphosphazene, the specific steps are as follows:

[0027] Step 1, take by weighing hexachlorocyclotriphosphazene (0.5g), poloxamer (1g) and melamine (0.2g) on ​​weighing paper at a mass ratio of 1:2:0.4, then transfer the drug mixture to Empty mortar, and stirring with a spatula to mix the three medicines evenly, and then grind with a pestle for 15 minutes to obtain a solid mixture A.

[0028] Step 2. Transfer the obtained solid mixture A above to the polytetrafluoroethylene bushing of a 50ml hydrothermal synthesis reactor, put it into the reactor, and tighten the lid of the kettle with a screw. Then the reaction kettle was transferred to a dry box, the temperature was raised to 160° C., and the reaction was carried out at this temperature for 12 hours. Finally, the generated polyphosphazene intermediate product was taken out from the kettle and collected in a 10 ml centrifuge tube for later use.

[0029]...

Embodiment 2

[0033] A preparation method of environment-friendly ring-crosslinked polyphosphazene, the specific steps are as follows:

[0034] Step 1, take by weighing hexaphenoxycyclotriphosphazene (2g), sodium dodecylbenzenesulfonate (6g) and urea (1 gram) on weighing paper at a mass ratio of 1:3:0.5, and then Transfer the drug mixture to an empty mortar, stir with a spatula to mix the three drugs evenly, and then grind with a pestle for 20 minutes to obtain a solid mixture A.

[0035] Step 2. Transfer the obtained solid mixture A above to the polytetrafluoroethylene bushing of a 50ml hydrothermal synthesis reactor, put it into the reactor, and tighten the lid of the kettle with a screw. Then the reaction kettle was transferred to a dry box, the temperature was raised to 140° C., and the reaction was carried out at this temperature for 14 hours. Finally, the generated polyphosphazene intermediate product was taken out from the kettle and collected in a 10 ml centrifuge tube for later use...

Embodiment 3

[0040] A preparation method of environment-friendly ring-crosslinked polyphosphazene, the specific steps are as follows:

[0041] Step 1. Weigh hexaaminocyclotriphosphazene (3g), polyvinylpyrrolidone (15g) and p-phenylenediamine (9g) on ​​weighing paper at a molar ratio of 1:5:3, then transfer the drug mixture into an empty mortar, and stir with a spatula to mix the three medicines evenly, and then grind with a pestle for 5 minutes to obtain a solid mixture A.

[0042] Step 2. Transfer the obtained solid mixture A above to the polytetrafluoroethylene bushing of a 50ml hydrothermal synthesis reactor, put it into the reactor, and tighten the lid of the kettle with a screw. Then the reaction kettle was transferred to a dry box, the temperature was raised to 180° C., and the reaction was carried out at this temperature for 10 hours. Finally, the generated polyphosphazene intermediate product was taken out from the kettle and collected in a 10 ml centrifuge tube for later use.

[00...

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Abstract

The invention relates to a preparation method of environment-friendly cyclocrosslinked polyphosphazene, and belongs to the field of nano materials and green synthesis. According to the invention, cyclotriphosphazene, a template agent and another drug are utilized in the absence of a solvent and an acid-binding agent to prepare the environment-friendly cyclocrosslinked polyphosphazene through hydro-thermal reaction; the experiment raw materials are easy to obtain, the production and preparation process is simple, the environment is not polluted, a template agent can be removed through an ultrasonic cleaning method to form a porous structure, and the specific surface area increased compared with that of polyphosphazene obtained through a traditional method.

Description

technical field [0001] The present invention relates to a preparation method of environment-friendly ring-crosslinked polyphosphazene, in particular to a synthesis method based on molecular and nanostructure design to prepare ring-matrix polyphosphazene in a green and sustainable manner without any solvent The invention relates to a nitrile skeleton, which belongs to the field of nanomaterials and green synthesis. Background technique [0002] The main chain of polyphosphazene is a structure in which phosphorus and nitrogen atoms are arranged alternately, which can form a synergistic flame-retardant effect of nitrogen and phosphorus, endowing polyphosphazene with inherent excellent flame-retardant properties, and phosphazene materials can be Nuclear substitution reaction, the introduction of various active functional groups, the development of new flame retardant materials for different applications, to meet the application requirements of phosphazene and polyphosphazene mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G79/025C08J9/28C08J9/26
CPCC08G79/025C08J9/26C08J9/286C08J2201/0422C08J2201/0424C08J2385/02
Inventor 潘也唐张志达韩忠强杨荣杰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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