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Preparation method of borate polymer @ cuprous oxide flame-retardant nanoparticles with core-shell structure

A core-shell structure, nanoparticle technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, can solve problems such as weakening the flame retardant effect, achieve low price, good economy, and overcome changes. Effects of Sexual Difficulty

Active Publication Date: 2020-12-22
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method is to compound the flame retardant with cuprous oxide, which weakens the flame retardant effect of the whole system to a certain extent

Method used

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  • Preparation method of borate polymer @ cuprous oxide flame-retardant nanoparticles with core-shell structure
  • Preparation method of borate polymer @ cuprous oxide flame-retardant nanoparticles with core-shell structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Dissolve 415mg 2,4,6-tris(N,4'-aminophenyl)-1,3,5-triazine, 648mg DOPO and 450mg 4-formylphenylboronic acid in 100ml methanol, avoid light Stir overnight to obtain a nitrogen-containing three-arm phenylboronic acid solution;

[0033] (2) Dissolve 198mg of 4,4-diaminodiphenylmethane, 432mg of DOPO and 276mg of 3,4-dihydroxybenzaldehyde in 100ml of methanol, and stir overnight in the dark to obtain a nitrogen-containing two-arm catechol solution;

[0034] (3) Add 400mg of cuprous oxide to 1L of methanol, and sonicate for 0.5h to obtain a methanol dispersion of cuprous oxide with a concentration of 0.4mg / ml;

[0035] (4) Add the above-mentioned cuprous oxide methanol dispersion into a reaction vessel, add 57ml of the above-mentioned nitrogen-containing two-arm catechol solution dropwise, and ultrasonically disperse it for 30 minutes;

[0036] (5) Dilute the above-mentioned nitrogen-containing three-arm phenylboronic acid solution containing an equimolar ratio to multi...

Embodiment 2

[0044] The preparation of nitrogen-containing three-arm phenylboronic acid solution and nitrogen-containing two-arm catechol solution is the same as the steps (1) to (2) of Example 1;

[0045] (3) Add 2 g of cuprous oxide to 2L of methanol, and ultrasonicate for 1 hour to obtain a methanol dispersion of cuprous oxide with a concentration of 1 mg / ml;

[0046] (4) Add the above-mentioned cuprous oxide methanol dispersion into the reaction vessel, add 22.8ml of the above-mentioned two-arm catechol solution containing phosphorus and nitrogen dropwise, and ultrasonically 0.5h to make it uniformly dispersed;

[0047](5) Dilute the above-mentioned nitrogen-containing three-arm phenylboronic acid solution containing equimolar ratio to multi-arm catechol to 1 mg / ml, slowly add dropwise to the material obtained in step (4), and react at room temperature for 72 hours after the dropwise addition .

[0048] (6) After the reaction is completed, the precipitate is obtained by centrifugation...

Embodiment 3

[0051] The involved multi-arm phenylboronic acid and catechol monomers containing elements such as phosphorus and nitrogen are prepared as follows:

[0052] (1) Dissolve 783mg hexa(4-aminophenoxy)cyclotriphosphazene, 1296mg DOPO and 900mg 4-formylphenylboronic acid in 10ml methanol, and stir overnight in the dark to obtain a phosphorus-nitrogen-containing six-arm phenylboronic acid solution ;

[0053] (2) Dissolve 792mg of 4,4'-diaminodiphenylmethane, 1728mg of DOPO and 1104mg of 3,4-dihydroxybenzaldehyde in 20ml of methanol, and stir overnight in the dark to obtain a nitrogen-containing two-arm catechol solution ;

[0054] (3) Add 1000 mg of cuprous oxide to 100 ml of methanol, and sonicate for 0.5 h to obtain a methanol dispersion of cuprous oxide with a concentration of 1 mg / ml;

[0055] (4) Add the above-mentioned cuprous oxide methanol dispersion into the reaction vessel, add 190.5ml of the above-mentioned two-arm catechol solution containing phosphorus and nitrogen dro...

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Abstract

The invention discloses a preparation method of borate polymer@cuprous oxide flame-retardant nanoparticles with core-shell structures. The preparation method comprises the following steps: respectively reacting one or two polyamines containing flame-retardant elements such as phosphorus, nitrogen and the like with 4-formylphenylboronic acid, DOPO and 3, 4-dihydroxy benzaldehyde, and DOPO to prepare multi-arm phenylboronic acid and catechol monomers; then dispersing cuprous oxide in methanol to form a uniform and stable dispersion liquid, adding the multi-arm catechol monomers, uniformly stirring, and slowly dropwise adding a multi-arm phenylboronic acid solution to form a borate polymer layer on the surface of cuprous oxide from multi-arm phenylboronic acid and catechol monomers, thereby obtaining the borate polymer@cuprous oxide flame-retardant nanoparticles with core-shell structures.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic hybrid nanomaterials, and specifically relates to a method for preparing borate polymer@cuprous oxide flame-retardant nanoparticles with a core-shell structure. Background technique [0002] Polymer materials are widely used in today's social life and are an indispensable material. However, these materials have a fatal shortcoming, flammability, which greatly increases the safety hazard of fire, so it is very important to develop polymer materials with fire and flame retardant functions. Studies have shown that adding inorganic nanoparticles is a way to improve the flame retardancy of polymers. Metal oxides, especially cuprous oxide, are a common and inexpensive additive for flame retardants, which exert their flame retardant effect by catalyzing carbon formation in the condensed phase. However, its flame retardant effect is generally manifested in a large amount of addition, which wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/10C08K3/22C08G79/08C08L69/00C08L55/02C08L67/04C08L63/00B01J13/14B82Y40/00B82Y30/00
CPCB01J13/14B82Y30/00B82Y40/00C08G79/08C08K3/22C08K9/10C08K2003/2248C08K2201/011C08L55/02C08L63/00C08L67/04C08L69/00C08L2201/02
Inventor 戴李宗张泓杨杰李伟航黄楚红毛杰李敏袁丛辉吴腾达陈国荣
Owner XIAMEN UNIV
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