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A kind of expansive phytate flame retardant, flame retardant epoxy resin and its preparation method and application

A technology of epoxy resin and phytate, applied in the field of flame retardant, can solve the problems of high hazard and high pollution of synthesis, and achieve the effects of low price, wide source and simple and easy preparation method

Active Publication Date: 2022-04-08
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the synthesis of traditional phosphorus-nitrogen flame retardants is relatively polluting, and the solvents and raw materials used in the synthesis are more harmful to the human body.

Method used

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  • A kind of expansive phytate flame retardant, flame retardant epoxy resin and its preparation method and application
  • A kind of expansive phytate flame retardant, flame retardant epoxy resin and its preparation method and application
  • A kind of expansive phytate flame retardant, flame retardant epoxy resin and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: Expandable phytate flame retardant 1

[0031] A kind of preparation method of expansive phytate flame retardant, the steps are:

[0032] DOPO (21.6 g, 0.1 mol) was added into a 250 ml flask, and then butanol was added, and the temperature was raised to 50° C. under magnetic stirring. After DOPO was completely dissolved, aminostyrene (13.09 g, 0.11 mol) was added dropwise and reacted at 50° C. for 5 h. At 30° C., phytic acid (72.6 g, 0.11 mol) was added dropwise to react for 0.5 h. Butanol was then removed by rotary evaporation, and the obtained solid was dried at 80° C. for 8 h.

Embodiment 2

[0033] Example 2: Expandable phytate flame retardant 2

[0034] A kind of preparation method of expansive phytate flame retardant, the steps are:

[0035] DOPO (12.96 g, 0.06 mol) was added into a 250 ml flask, and then methanol was added, and the temperature was raised to 100° C. under magnetic stirring. After DOPO was completely dissolved, aminopropene (5.14 g, 0.09 mol) was added dropwise and reacted at 120° C. for 10 h. At 120° C., phytic acid (9.9 g, 0.015 mol) was added dropwise to react for 2 h. Methanol was then removed by rotary evaporation, and the obtained solid was dried at 180° C. for 8 h.

Embodiment 3

[0036] Example 3: Expandable Phytate Flame Retardant 3

[0037] A kind of preparation method of expansive phytate flame retardant, the steps are:

[0038] Add DOPO (20.74 g, 0.096 mol) into a 250 ml flask, then add ethanol, stir magnetically and raise the temperature to 80°C. After DOPO was completely dissolved, aminobenzaldehyde (14.54 g, 0.12 mol) was added dropwise and reacted at 90° C. for 8 h. At 70°C, phytic acid (6.6 g, 0.01 mol) was added dropwise to react for 1.5 h. Then the ethanol was removed by rotary evaporation, and the obtained solid was dried at 150° C. for 8 h.

[0039] From attached figure 1 , attached figure 2 It can be seen that, through the process of Example 2, the expandable phytate flame retardant 2 was successfully synthesized. After experimental testing and analysis, the expansive phytate flame retardant 2 is preferred for use in the preparation of flame retardant epoxy resins.

[0040] The following is the use of the expandable phytate flame r...

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PUM

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Abstract

The invention specifically discloses an expansive phytate flame retardant, a flame retardant epoxy resin and a preparation method and application thereof. The structural formula of the flame retardant is shown in (I); in the formula (I), R 1 ~R 12 is ‑OH or (II), wherein the number of formula (II) is greater than or equal to 1; the flame retardant is prepared by synthesis using phytic acid, DOPO, aminoalkene or aminoaldehyde as raw materials. The "one-pot method" is adopted for preparation, the synthesis process is simple, and the industrial production is easy. In the preparation process, a non-toxic solution is used as a reaction solvent, and the solvent can be recycled and reused. At the same time, the flame retardant contains P and N flame retardant elements, and has a high flame retardant efficiency. The flame retardant is used in flame retardant epoxy resin, polyurethane and other materials, and has a good flame retardant effect.

Description

technical field [0001] The invention belongs to the field of flame retardant technology, and in particular relates to an expandable phytate flame retardant, a flame retardant epoxy resin and a preparation method and application thereof. Background technique [0002] With the advancement of science and technology and the development of material science, polymer materials have been applied in more and more fields. However, most polymers are flammable, which seriously limits their application in many fields. In order to broaden the application of polymers, it is very necessary to modify their flame retardancy. Adding flame retardants is a very effective and easy-to-operate method. However, traditional halogenated flame retardants are gradually eliminated due to the generation of toxic gases such as dioxins during combustion. Therefore, the development of environmentally friendly flame retardants with high flame retardant efficiency is very necessary. [0003] Phosphorus-nitro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/5313C08K7/24C08K3/38C08L63/00C07F9/6574C07F9/117
CPCC08K5/5313C08K7/24C08K3/38C07F9/657172C07F9/117C08K2003/387C08L2201/02C08L63/00
Inventor 杨云仙黄广炎陈文吴广王博
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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