A kind of phosphorus-silicon synergistic flame retardant with hyperbranched structure and preparation method thereof

A technology of synergistic flame retardant and alkoxysilane, which is applied in the field of phosphorus-silicon synergistic flame retardants and its preparation, can solve problems such as difficult to meet green chemistry and harm to experimenters, and achieve low cost, simple equipment, and short reaction time 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

However, since the reaction is carried out in formaldehyde solvent and hydrochloric acid is needed for catalysis, it is harmful to the experimenter and it is difficult to meet the requirements of green chemistry.

Method used

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  • A kind of phosphorus-silicon synergistic flame retardant with hyperbranched structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add (3-chloropropyl)trimethoxysilane, trimethyl phosphate and ethylene glycol 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. The obtained product was added into a 2000 molecular weight dialysis bag, dialyzed for 24 hours, and then rotary evaporated to obtain a phosphorus-silicon synergistic flame retardant with a hyperbranched structure.

Embodiment 2

[0030] Add (3-chloropropyl)triethoxysilane, trimethyl phosphate and 1,3-propanediol 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. The obtained product was added into a 2000 molecular weight dialysis bag, dialyzed for 24 hours, and then rotary evaporated to obtain a phosphorus-silicon synergistic flame retardant with a hyperbranched structure.

Embodiment 3

[0032] Add (3-chloropropyl)trimethoxysilane, triethyl phosphate and 1,4-butanediol into a three-necked flask at a molar ratio of 1:1:3, and stir under the protection of nitrogen to control the reaction The temperature is between 80-200°C, and the reaction is carried out for 4-12 hours until no distillate is produced. The obtained product was added into a 2000 molecular weight dialysis bag, dialyzed for 24 hours, and then rotary evaporated to obtain a phosphorus-silicon synergistic flame retardant with a hyperbranched structure.

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PUM

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Abstract

The invention relates to a phosphorus-silicon synergistic flame retardant with a hyperbranched structure and a preparation method thereof. A kind of flame retardant with a hyperbranched structure is obtained by reacting alkoxysilane, trialkoxy phosphate and glycol according to a certain molar ratio. Phosphorus-silicon synergistic flame retardants. Hyperbranched phosphorus-silicon synergistic flame retardants containing different functional groups such as hydroxyl groups, phosphate groups, chloropropyl groups, mercaptopropyl groups, and epoxy groups at the end positions can be prepared by adjusting the ratio of raw materials. The flame retardant belongs to an organic flame retardant, has good compatibility with polymer materials, and has a wide range of applications, and can be used for the treatment of paper, cloth, fiber, plastic, resin, etc. The reaction process of the method of the invention does not use solvents and catalysts, meets the development requirements of green chemistry, and has short reaction time. All process parameter chains participating in the reaction are reasonable and can complete the reaction, so as to achieve the purpose and effect of the present invention.

Description

technical field [0001] The invention belongs to the technical field of advanced polymer materials, and relates to a phosphorus-silicon synergistic flame retardant with a hyperbranched structure and a preparation method. Background technique [0002] Phosphorus-based flame retardants have the advantages of non-toxicity, smoke suppression, diverse structures, and high-efficiency flame retardants, which are in line with the development direction of flame retardants; silicon-based flame retardants are rising stars in flame retardants. Flame retardants and phosphorus flame retardants are much later, but they are being used with excellent flame retardant properties (low burning rate, low heat release, anti-dripping), excellent processing properties (high fluidity) and excellent mechanical properties (especially low-temperature impact strength), especially environmental friendliness (low smoke, low CO generation) has attracted much attention, and has broad development prospects. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00
CPCC08G83/005
Inventor 颜红侠郭留龙张渊博白天王莲莲
Owner NORTHWESTERN POLYTECHNICAL UNIV
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