Phosphate microcapsule flame retardant and preparation method and application thereof

A flame retardant and phosphate technology, applied in the field of flame retardants, can solve problems such as unsuitable for use, achieve the effects of increasing flame retardant durability, convenient and controllable process, and strong industrial practical applicability

Inactive Publication Date: 2016-05-18
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coated microcapsule wall component is a polar compound, and the flame retardant also has a strong polarity, so it is not suitable for use in a non-polar polymer matrix

Method used

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  • Phosphate microcapsule flame retardant and preparation method and application thereof
  • Phosphate microcapsule flame retardant and preparation method and application thereof
  • Phosphate microcapsule flame retardant and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] a) Add 10g of melamine phosphate and 5ml of sodium dodecylsulfonate dispersant to a three-necked flask equipped with stirring and a thermometer, and add 200ml of N'N-dimethylformamide solvent, raise the temperature to 40 ℃, stirring mechanically and ultrasonically for 0.5h, uniformly dispersing melamine phosphate in N'N-dimethylformamide solvent to obtain a dispersion of melamine phosphate;

[0034]b) Add hexachlorocyclotriphosphazene and coupling agent γ-aminopropyltriethoxysilane (KH550) to the melamine phosphate dispersion obtained in step a) under mechanical stirring and ultrasonication, and add 3ml acid-binding agent triethylamine, wherein the mol ratio of hexachlorocyclotriphosphazene and coupling agent KH550 is 1:6, and the mol ratio of coupling agent KH550 and acid-binding agent triethylamine is 1:1, in After reacting for 8 hours at 40°C, stop mechanical stirring, cool to room temperature, vacuum filter, and vacuum dry at 90°C for 24 hours to obtain a melamine p...

Embodiment 2

[0036] a) Add 10g of melamine phosphate and 5ml of sodium dodecylsulfonate dispersant to a three-necked flask equipped with stirring and a thermometer, and add 200ml of N'N-dimethylformamide solvent, raise the temperature to 40 ℃, stirring mechanically and ultrasonically for 0.5h, uniformly dispersing melamine phosphate in N'N-dimethylformamide solvent to obtain a dispersion of melamine phosphate;

[0037] b) Add hexachlorocyclotriphosphazene and coupling agent KH550 to the melamine phosphate dispersion obtained in step a) under mechanical stirring and ultrasonication, and add 3ml of acid-binding agent triethylamine at the same time, wherein the hexachlorocyclotriphosphazene The molar ratio of chlorocyclotriphosphazene to coupling agent KH550 is 1:6, the molar ratio of coupling agent KH550 to acid-binding agent triethylamine is 1:1, stop mechanical stirring after reacting at 40°C for 8 hours, and cool to room temperature, vacuum filtration, and vacuum drying at 90°C for 24 hou...

Embodiment 3

[0042] a) Add 10g of melamine phosphate and 5ml of sodium dodecylsulfonate dispersant to a three-necked flask equipped with stirring and a thermometer, and add 200ml of N'N-dimethylformamide solvent, raise the temperature to 40 ℃, stirring mechanically and ultrasonically for 0.5h, uniformly dispersing melamine phosphate in N'N-dimethylformamide solvent to obtain a dispersion of melamine phosphate;

[0043] b) Add hexachlorocyclotriphosphazene and coupling agent KH550 to the melamine phosphate dispersion obtained in step a) under mechanical stirring and ultrasonication, and add 3ml of acid-binding agent triethylamine at the same time, wherein the hexachlorocyclotriphosphazene The molar ratio of chlorocyclotriphosphazene to coupling agent KH550 is 1:6, the molar ratio of coupling agent KH550 to acid-binding agent triethylamine is 1:1, stop mechanical stirring after reacting at 40°C for 8 hours, and cool to room temperature, vacuum filtration, and vacuum drying at 90°C for 24 hou...

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Abstract

The invention discloses a phosphate microcapsule flame retardant and a preparation method and application thereof. A phosphate flame retardant is adopted as a core material of the phosphate microcapsule flame retardant. A capsule material is a polyphosphazene dendritic polymer obtained through reaction of one or more of phosphonitrile and a coupling agent. The mass ratio of the capsule material to the core material is 0.1:1-1:1. According to the preparation method, a dispersing agent is utilized for uniformly dispersing the phosphate flame retardant into solvent; then one or more of phosphonitrile and the coupling agent are added under a mechanical stirring state and under an ultrasonic state, an acid-binding agent is added, the mechanical stirring reaction is carried out for 2-10 h, and a product is cooled to room temperature, filtered in a vacuum mode, and dried in a vacuum mode to obtain the phosphate microcapsule flame retardant. The phosphate microcapsule flame retardant is provided with a non-polar surface, and interfacial compatibility of the flame retardant in a non-polar polymer matrix can be improved; meanwhile, a certain toughening effect is achieved; the particle size of microcapsules is controllable, flame retardant performance and a mechanical property of a composite material can be improved, the whole technology process is convenient and controllable, and industrial applicability is high.

Description

technical field [0001] The invention belongs to the field of flame retardants, in particular to a phosphate microcapsule flame retardant and its preparation method and application. Background technique [0002] Microencapsulation technology refers to the use of natural or synthetic coating materials to coat the coated substances to form a microcapsule technology with a closed capsule wall structure. In the field of flame retardant technology, the flame retardant of the inner capsule core is separated from the polymer matrix, and is not affected by the outside world at the initial stage. However, under appropriate conditions, the capsule wall ruptures so that the capsule core directly acts on the polymer matrix, giving a controllable Flame retardant and flame retardant control of different combustion processes bring intelligence and efficiency. [0003] Phosphate has flame retardant properties and can be used as a flame retardant in the field of polymer material modification...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K5/3492C08L23/12
CPCC08K5/34928C08K9/10C08L2201/02C08L23/12
Inventor 雷彩红徐灵峰徐睿杰张丰
Owner GUANGDONG UNIV OF TECH
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