A kind of phosphorus-silicon-nitrogen ternary synergistic flame retardant and its preparation method

A technology of synergistic flame retardant and trialkoxy phosphate, which is applied in the field of phosphorus-silicon-nitrogen ternary synergistic flame retardants and its preparation, can solve the problems of volatile toxic solvents and catalysts, achieve low cost, easy operation, Practical effect

Active Publication Date: 2022-03-15
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the cumbersome preparation process of nitrogen-phosphorus-silicon synergistic flame retardants at the present stage, the reaction process requires volatile toxic solvents and catalysts, the simple and easy green preparation method of the present invention, and the multi-element synergy can significantly improve the flame retardant effect

Method used

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  • A kind of phosphorus-silicon-nitrogen ternary synergistic flame retardant and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add (3-aminopropyl)trimethoxysilane, trimethyl phosphate and diethanolamine into a three-necked flask at a molar ratio of 1:1:3, stir under the protection of nitrogen, and control the reaction temperature at 80-200 Between ℃, react for 4 to 12 hours until no distillate is produced. Add the obtained product into a 2000 molecular weight dialysis bag, dialyze for 24 hours, and then perform rotary evaporation to obtain the final product phosphorus-silicon-nitrogen ternary synergistic flame retardant.

Embodiment 2

[0025] Add (3-aminopropyl)trimethoxysilane, triethyl phosphate and N-methyldiethanolamine into a three-necked flask at a molar ratio of 1:1:3, stir under the protection of nitrogen, and control the reaction temperature Between 80 and 200°C, react for 4 to 12 hours until no distillate is produced. Add the obtained product into a 2000 molecular weight dialysis bag, dialyze for 24 hours, and then perform rotary evaporation to obtain the final product phosphorus-silicon-nitrogen ternary synergistic flame retardant.

Embodiment 3

[0027] Add (3-aminopropyl)triethoxysilane, triethyl phosphate and diethanolamine into a three-necked flask at a molar ratio of 1:1:3, stir under the protection of nitrogen, and control the reaction temperature at 80- Between 200°C, react for 4 to 12 hours until no distillate is produced. Add the obtained product into a 2000 molecular weight dialysis bag, dialyze for 24 hours, and then perform rotary evaporation to obtain the final product phosphorus-silicon-nitrogen ternary synergistic flame retardant.

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Abstract

The invention relates to a phosphorus-silicon-nitrogen ternary synergistic flame retardant and a preparation method thereof. Compared with the traditional multi-element synergistic flame retardant preparation method, the steps are cumbersome, a large amount of solvents and catalysts may be used, and it is difficult for large-scale industrial production; and most The flame retardant effect of thermosetting resin is relatively poor. To improve its flame retardancy, it is necessary to add a large amount of flame retardant to improve its flame retardant performance. The present invention utilizes amino-containing alkoxysilane, trialkoxy phosphate and diethanolamine (and its derivatives), a new type of phosphorus-silicon-nitrogen synergistic high-efficiency flame retardant is prepared under the condition of no solvent and no catalyst by "one-pot method", and it meets the development requirements of green chemistry. The beneficial effect of the invention is that no solvent and catalyst are used in the reaction process, the reaction time is short, the operation is easy, the cost is low, the equipment used is simple, and the practicability is strong.

Description

technical field [0001] The invention belongs to the scientific and technical field of advanced polymer materials, and relates to a phosphorus-silicon-nitrogen ternary synergistic flame retardant and a preparation method thereof. Background technique [0002] With the development of industry and people's demand for environmental protection, traditional halogen-containing flame retardants are gradually abandoned due to their environmental hazards and biological toxicity to mammals, and they are replaced by phosphorus-based flame retardants, nitrogen Flame retardants, silicon-based flame retardants and inorganic flame retardants. Phosphorus-based flame retardants have attracted attention due to their high flame-retardant efficiency and low addition amount; nitrogen-based flame retardants can degrade when heated, absorb heat, and generate gas at the same time, which plays the role of diluting flammable gases; organosilicon The flame retardant has the advantages of good thermal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/30C08L101/00C08L83/08
CPCC08G77/045C08G77/30C08L101/00C08L2201/02C08L83/08
Inventor 颜红侠郭留龙白天王莲莲张渊博
Owner NORTHWESTERN POLYTECHNICAL UNIV
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