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Hyperbranched polyphosphazene flame retardant charring agent and preparing method thereof

A technology of char-forming agent and polyphosphazene, which is applied in the field of hyperbranched polyphosphazene flame-retardant char-forming agent and its preparation, can solve the problems of poor thermal stability, poor water resistance and durability, complex synthesis process, etc., and achieve good processing performance , excellent flame retardant effect, the effect of simplifying the synthesis process

Inactive Publication Date: 2014-08-20
苏州安鸿泰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional intumescent flame retardant system polyphosphate amine-pentaerythritol-melamine, pentaerythritol (PER) is a compound with strong polarity. Poor thermal stability, poor water resistance and durability, easy to migrate to the surface of the substrate, high water solubility, large amount of addition, high viscosity, poor processability, poor char formation rate and other shortcomings, which greatly limit the further popularization and application of IFR
However, the existing triazine char-forming agents have the disadvantages of complicated synthesis process and long production cycle.

Method used

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  • Hyperbranched polyphosphazene flame retardant charring agent and preparing method thereof
  • Hyperbranched polyphosphazene flame retardant charring agent and preparing method thereof
  • Hyperbranched polyphosphazene flame retardant charring agent and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Dissolve 0.2mol piperazine in 70mL ethanol, add it into a 500mL three-neck flask equipped with a reflux condenser, a constant pressure dropping funnel, and a stirrer, and start stirring; dissolve 0.05mol hexachlorocyclotriphosphazene in 100mL dioxane and dropwise added to the above piperazine solution through a constant pressure dropping funnel, keeping the temperature at 0°C for 4 hours; then raising the reaction temperature to 50°C, dissolving 0.3mol NaOH in 20mL of water, and slowly dropping Add it to the above reaction system, and continue to react at this temperature for 6 hours; finally, raise the reaction temperature to 95°C, continue to react for 9 hours, stop stirring, suction filter while hot, wash with water 3 times, and vacuum dry at 80°C for 8 hours. 22.54 g of the product were obtained as a yellowish solid.

[0035] The obtained product was subjected to elemental analysis, and the results showed that the measured mass percentages of C, N, and H in the samp...

Embodiment 2

[0039] Dissolve 0.25mol of ethylenediamine in 25mL of water, add it to a 500mL three-necked flask equipped with a reflux condenser, a constant pressure dropping funnel, and a stirrer, and then dissolve 0.05mol of hexachlorocyclotriphosphazene in 10mL of tetrahydrofuran, Add dropwise to the above aqueous solution of ethylenediamine, react at 10°C for 1 hour; then raise the temperature to 70°C, add 0.32mol of Na 2 CO 3 Dissolve in 40mL of water, slowly add dropwise to the system, and continue to react at this temperature for 3 hours, and finally raise the temperature to 150°C, and react for 6 hours; stop stirring, suction filter while hot, and wash with water 3 times. After drying for 2 hours, 8.79 g of a yellowish solid product was obtained with a yield of 93.2%. The elemental analysis results of the product obtained in this example show that the theoretical percentages of C, N, and H in the hyperbranched polyphosphazene flame-retardant char-forming agent are respectively 28.4...

Embodiment 3

[0041] Dissolve 0.3mol of p-phenylenediamine in 100mL of ethanol, add it to a 500mL three-neck flask equipped with a reflux condenser, a constant pressure dropping funnel, and a stirrer, and then dissolve 0.05mol of hexachlorocyclotriphosphazene in 5mL of benzene Add dropwise to the above p-phenylenediamine solution, and react at 5°C for 3 hours; then raise the reaction temperature to 30°C, dissolve 0.35mol of KOH in 50mL of water, and slowly add dropwise to the reaction system, and continue to react at this temperature for 8 hours, and finally raise the temperature to 150°C, and react for 10 hours; stop stirring, suction filter while hot, wash with water 3 times, and vacuum dry at 50°C for 10 hours to obtain a light yellow solid product 36.7 g, the yield is 94.6%. The elemental analysis results of the product obtained in this example show that in the hyperbranched polyphosphazene char-forming agent, the theoretical percentages of C, N, and H are respectively 51.8%, 27.7%, and...

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Abstract

An efficient hyperbranched polyphosphazene flame retardant charring agent is prepared by reacting hexachlorocyclotriphosphazene with a binary compound containing two active groups. The charring agent has characteristics of good foaming charring performance, excellent flame retardant effects and good processing performance, and can be widely used in plastics, rubber, coating, adhesives, and other polymer materials. A preparing method adopts a one-pot method, and has characteristics of continuous reaction process, short reaction time and high production efficiency. By controlling the mole ratio of the hexachlorocyclotriphosphazene to the binary compound, no end-capping agent is added in the reaction process. When compared with the addition of end-capping agents in synthesis processes in triazine type charring agent patents, the synthetic process of the charring agent is simplified.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and relates to an intumescent flame-retardant char-forming agent and a preparation method thereof, in particular to a hyperbranched polyphosphazene flame-retardant char-forming agent and a preparation method thereof. Background technique [0002] Intumescent flame retardants are one of the types of green flame retardants widely used in recent years. It also overcomes the disadvantage of causing suffocation of personnel, and also overcomes the adverse effects of inorganic flame retardants on material mechanics and processing properties due to large additions. Intumescent flame retardant (IFR) meets the requirements of today's protection of the ecological environment due to its unique flame retardant mechanism, halogen-free, low smoke, low toxicity, and the generated carbon layer can effectively prevent polymer droplets. [0003] Generally speaking, IFR includes 3 parts, namel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G79/02C08G79/04C08G79/025
Inventor 温攀月台启龙
Owner 苏州安鸿泰新材料有限公司
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