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Metal ion flame retardant complex with Schiff base structure and preparation method

A technology of metal ions and Schiff bases, applied in the field of reactive flame retardants, can solve the problems of weakening the combustion of polymer materials

Active Publication Date: 2021-06-01
辽宁麦琪新材料集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Salen flame retardant basically exerts cross-linking flame retardancy in the condensed phase, and does not effectively weaken the combustion performance of polymer materials in the gas phase.

Method used

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  • Metal ion flame retardant complex with Schiff base structure and preparation method
  • Metal ion flame retardant complex with Schiff base structure and preparation method
  • Metal ion flame retardant complex with Schiff base structure and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: Metal ion flame retardant complex with Schiff base structure

[0043] The structural formula is as follows

[0044] in,

[0045] Wherein, M is a metal ion, specifically Cu and Fe.

Embodiment 2

[0046] Embodiment 2: Metal ion flame retardant complex with Schiff base structure

[0047] The structural formula is as follows

[0048] in,

[0049] Wherein, M is a metal ion, specifically Ni, Zn.

Embodiment 3

[0051] Add 2.0mol 2,4-dihydroxybenzaldehyde, ethanol, and 1.0mol o-phenylenediamine into a reaction vessel equipped with stirring, heating, and temperature control devices. After the addition is complete, stir and react at 30°C for 12h under nitrogen protection; the yellow The precipitate was filtered under reduced pressure, washed with ethanol, and dried in a vacuum oven to obtain the intermediate product N,N'-bis(2,4-dihydroxyhydrinohydrin)-1,2-phenylenediamine (Salen-H6). Then add 1.0mol Salen-H6, 2.3mol triethylamine and dichloromethane into the reaction vessel equipped with stirring, heating and temperature control devices, and add 2.3mol diphenyl chlorophosphate (DPCP) dropwise at 0°C Into the system, after the addition is complete, stir and react at 30°C for 6h under nitrogen protection; evaporate dichloromethane to dryness under reduced pressure, extract 3 times with dichloromethane, wash the organic phase with deionized water 3 times, and evaporate dichloromethane to d...

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Abstract

The invention discloses a metal ion flame retardant complex with a Schiff base structure and a preparation method, and mainly relates to the technical field of reactive flame retardants. The structural formula is wherein, R is: the beneficial effect of the present invention is: generate a series of flame-retardant complexes Salen-DPCP-M by complexing Salen-H6-2DPCP with metal ions, wherein the phosphorus-containing organic fragments are mainly captured in the gas phase OH radicals play a gas-phase flame-retardant mechanism, Schiff bases and metals respectively play anti-droplet and catalyzed charcoal-forming condensed-phase flame-retardant effects during the combustion process, thereby implementing an all-round flame-retardant strategy for polymer materials.

Description

technical field [0001] The invention relates to the technical field of reactive flame retardants, in particular to a metal ion flame retardant complex with a Schiff base structure and a preparation method. Background technique [0002] The Schiff base structure flame retardant can endow the polymer material with anti-droplet performance. When the polymer material is in danger of fire, it can prevent the burning polymer from producing molten droplets to ignite other materials, which can greatly reduce the scale of the fire. Reduce personal and property losses caused by secondary combustion. [0003] Patent CN201510817559.8 discloses a high-temperature self-crosslinking flame-retardant anti-droplet copolyester based on Schiff base structure. It is found that chemical crosslinking occurs at high temperature, which increases the melt viscosity of the copolyester, thus endowing the polyester with good flame retardant and anti-droplet properties. [0004] Salen contains a Schiff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/00C08L63/00C07F9/12
CPCC07F9/12C08K5/0091C08L2201/02C08L63/00
Inventor 崔锦峰张亚斌杨保平郭军红田力包雪梅慕波张秀君周应萍郭永亮王露蓉何婷香王念念
Owner 辽宁麦琪新材料集团有限公司
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