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A nitrogen heterocyclic aromatic amine-metal ion complex flame retardant and its application in the preparation of flame retardant epoxy resin

A technology of heterocyclic aromatic amines and metal ions, applied in organic chemistry, etc., can solve the problems of decreased thermal stability of flame-retardant epoxy resin, thermal stability and mechanical properties of flame-retardant epoxy resin materials, and large amount of addition

Active Publication Date: 2021-07-06
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN110776720A discloses a kind of medium-temperature fast-curing flame-retardant epoxy resin and its preparation method, using melamine cyanurate and ammonium polyphosphate, or melamine cyanurate and ammonium polyphosphate and aluminum tripolyphosphate, tricresyl phosphate , triphenyl phosphite, dimethyl methyl phosphonate, aluminum diethyl phosphinate, etc. are compounded as flame retardants, which have the disadvantage of large addition amount, and the high addition amount leads to the failure of flame retardant epoxy resin materials. Problems such as thermal stability and decline in mechanical properties
In addition, most phosphorus-based flame retardants will undergo early thermal degradation, resulting in a decrease in the thermal stability of flame-retardant epoxy resins.

Method used

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  • A nitrogen heterocyclic aromatic amine-metal ion complex flame retardant and its application in the preparation of flame retardant epoxy resin
  • A nitrogen heterocyclic aromatic amine-metal ion complex flame retardant and its application in the preparation of flame retardant epoxy resin
  • A nitrogen heterocyclic aromatic amine-metal ion complex flame retardant and its application in the preparation of flame retardant epoxy resin

Examples

Experimental program
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Effect test

Embodiment 1

[0030] ① Accurately weigh 100 parts of bisphenol A epoxy resin, 4 parts of adenine-zinc ion complex (molar ratio 1:1) flame retardant, heat and stir in the reaction kettle, the dispersion temperature is 100 ° C, the stirring time Be 15 minutes, obtain epoxy resin dispersion;

[0031] ②Reduce the epoxy resin dispersion obtained in step ① below 80°C, add 30 parts of 4,4'-diaminodiphenylmethane, continue to stir for 15 minutes, mix well, pour into the mold, cure at 100°C for 2 hours, 150 ℃ for 2 hours, and after demoulding, a nitrogen heterocyclic aromatic amine-metal ion complex flame-retardant epoxy resin material was obtained.

Embodiment 2

[0036] ① Accurately weigh 100 parts of bisphenol A epoxy resin, 4 parts of 3,5-diamino-1,2,4-triazole-zinc ion complex (molar ratio 1:2) flame retardant, in the reaction Heat and stir in the kettle, the dispersion temperature is 100°C, and the stirring time is 15 minutes to obtain the epoxy resin dispersion;

[0037]②Reduce the epoxy resin dispersion obtained in step ① below 80°C, add 30 parts of 4,4'-diaminodiphenylmethane, continue to stir for 15 minutes, mix well, pour into the mold, cure at 100°C for 2 hours, 150 ℃ for 2 hours, and after demoulding, a nitrogen heterocyclic aromatic amine-metal ion complex flame-retardant epoxy resin material was obtained.

Embodiment 3

[0042] ① Accurately weigh 100 parts of bisphenol A epoxy resin, 4 parts of 2,4-diamino-1,3,5-triazole-silver ion complex (molar ratio 1:4) flame retardant, in the reaction Heat and stir in the kettle, the dispersion temperature is 100°C, and the stirring time is 30 minutes to obtain the epoxy resin dispersion;

[0043] ②Reduce the epoxy resin dispersion obtained in step ① below 80°C, add 30 parts of 4,4'-diaminodiphenylsulfone, continue stirring for 30 minutes, mix well, pour into the mold, and cure at 150°C for 2 hours, 180°C ℃ for 2 hours, and after demoulding, a nitrogen heterocyclic aromatic amine-metal ion complex flame-retardant epoxy resin material was obtained.

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Abstract

The invention discloses a nitrogen-heterocyclic aromatic amine-metal ion complex flame retardant and its application in the preparation of flame-retardant epoxy resin, wherein the chemical composition of the nitrogen-heterocyclic aromatic amine-metal ion complex flame retardant is The structure is R-M, and R is any one of the following structures: M is any one of the following structures: Ag + , Zn 2+ , Mg 2+ , Ca 2+ 、Ba 2+ 、Cd 2+ , Fe 2+ 、Al 3+ , Fe 3+ 、Ti 4+ 、Zr 4+ . The chemical structure of the nitrogen-heterocyclic aromatic amine-metal ion complex flame retardant of the present invention does not contain phosphorus atoms, which avoids the problem that the thermal stability of epoxy resins decreases due to the early degradation of most phosphorus-containing compounds, and has nitrogen-containing The aromatic heterocyclic structure and metal elements can play a role in promoting char formation, and have the advantages of high flame retardant efficiency and no deterioration of other properties for epoxy resins.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant polymer materials, and in particular relates to a nitrogen heterocyclic aromatic amine-metal ion complex flame retardant and its application in preparing flame-retardant epoxy resin. Background technique [0002] As a typical thermosetting polymer, epoxy resin has excellent adhesion, mechanical properties, electrical insulation and chemical stability, as well as low shrinkage, easy processing, and low cost. It has been widely used in high-tech fields such as transportation and aerospace. However, the molecular structure of epoxy resin materials contains a large amount of carbon, hydrogen, oxygen and other elements, which are flammable in nature, and release a large amount of heat and toxic fumes when burned, which seriously limits its application fields. Therefore, epoxy resin materials must be flame retardant modified. At present, the widely used flame retardants for epoxy resin materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/00C08L63/00C07D473/34C07D249/14
CPCC07D249/14C07D473/34C08K5/0091C08L2201/02C08L2201/08C08L63/00
Inventor 王鑫胡源宋磊
Owner UNIV OF SCI & TECH OF CHINA
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