Unlock instant, AI-driven research and patent intelligence for your innovation.

A preparation method of flame-retardant heat-resistant polyphosphazene insulating glue

A technology of polyphosphazene and insulating glue is applied in the field of wire and cable materials, which can solve the problems of limited high temperature resistance and poor thermal stability, and achieve the effects of improving water resistance, excellent electrical insulation performance and improving stability.

Active Publication Date: 2018-10-23
福建超阳电线电缆有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polyphosphazene used here is polyalkoxyphosphazene or polyphosphazene maleamide, which has poor thermal stability and high temperature resistance still has great limitations

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A preparation method of flame-retardant heat-resistant polyphosphazene insulating glue, comprising the following steps:

[0060] Step 1. Take 58g of polyphosphazene chloride, add it to 400mL tetrahydrofuran solution, and stir until the polyphosphazene chloride is completely dissolved to obtain a tetrahydrofuran solution of polyphosphazene chloride, which is set aside;

[0061] Step 2: Dissolve 130.1g of 2,6-difluorophenol in 150mL of tetrahydrofuran solution, slowly add 40g of sodium hydroxide through a stirrer, adjust the temperature of the solution to a constant temperature of 40°C, and react under stirring for 1 hour to 2,6 - until the complete reaction of difluorophenol is sodium difluorophenoxide, the intermediate product solution (I) is obtained, and it is subsequent use;

[0062] Step 3: Take a 1000mL three-neck flask equipped with a stirrer, condenser and constant pressure dropping funnel, add 33.2g of 1,7-bis(4-hydroxyphenyl)-carborane, and slowly add 4g of hyd...

Embodiment 2

[0068] The difference between embodiment two and embodiment one is:

[0069] In step 2, get 162.1g p-trifluoromethylphenol and dissolve in 150mL tetrahydrofuran solution, and react under stirring for 1 hour until p-trifluoromethylphenol is completely reacted as p-trifluoromethylphenoxysodium to obtain the intermediate product Solution (Ⅱ), standby;

[0070] In step 3, when passing nitrogen into the reaction solution, the stirring reaction was carried out at a temperature of 100° C. for 2 hours;

[0071] In step 4, the intermediate product solution (II) is used for the reaction.

[0072] The beneficial effects of the present invention are: the water resistance of polyphosphazene is improved by replacing the chlorine atom of polydichlorophosphazene polymer with alkoxy group, but the thermal stability is not good, and carborane is added in the substituent, then improved Polyphosphazene polymer stability, heat resistance. The electrical cable insulating adhesive prepared by add...

Embodiment 3

[0074] The difference between embodiment three and embodiment one is:

[0075] In step 2, get 178.1g p-trifluoromethoxyphenol and dissolve in 150mL tetrahydrofuran solution, react under stirring for 1 hour until p-trifluoromethoxyphenol is completely reacted as p-trifluoromethylphenoxysodium, to obtain Intermediate product solution (Ⅲ), standby;

[0076] In step 3, when passing nitrogen into the reaction solution, the stirring reaction was carried out at a temperature of 100° C. for 2 hours;

[0077] In step 4, the intermediate product solution (III) is used for the reaction.

[0078] The beneficial effects of the present invention are: the water resistance of polyphosphazene is improved by replacing the chlorine atom of polydichlorophosphazene polymer with alkoxy group, but the thermal stability is not good, and carborane is added in the substituent, then improved Polyphosphazene polymer stability, heat resistance. The electrical cable insulating adhesive prepared by addin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a flame-retardant heatproof polyphosphazene insulating rubber preparation method. The method includes: adding polydichlorophosphazene into a tetrahydrofuran solution to obtain a solution A; reacting 2,6-difluorophenol with sodium hydroxide at 40 DEG C until fluorophenoloxyl sodium is contained to obtain a solution B; putting carborane bisphenol A and bromoalkane into a reaction kettle, heating to 60-70 DEG C, stirring for reacting to a homogeneous phase to obtain a polydichlorophosphazene solution; adding the solution A into the polydichlorophosphazene solution drop by drop to realize reaction, adding the solution B after reaction is finished, and continuing reaction to obtain flame-retardant heatproof polyphosphazene insulating rubber for electrical cables. By addition of the 2,6-difluorophenol, carborane bisphenol monoalkyl ether and the like, the insulating rubber for the electrical cable has advantages of excellent electrical insulation performance, high heat resistance, excellent flame retardance performance and preparation method simplicity.

Description

technical field [0001] The invention relates to wire and cable materials, in particular to a preparation method of flame-retardant and heat-resistant polyphosphazene insulating glue. Background technique [0002] With the development of electrical and electronic business and the improvement of electrical and electrical technology, high-performance electrical and electronic products and other high-performance scientific and technological products are widely used. A cable insulating adhesive that can meet the requirements of cables and has flame retardant and heat resistance appears. extremely important. With the development of science and technology and the progress of society, the smoke produced by the burning of PVC and halogen-containing flame retardant cables is harmful to the human body, causing many people to suffocate and die in the fire, and the precision equipment is paralyzed. Halogen-containing cables will be phased out gradually. Therefore, it is of great signif...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08G79/025
CPCC08G79/025
Inventor 郑飞
Owner 福建超阳电线电缆有限公司