Halogen-free nano composite flame retardant and preparation method thereof

A nanocomposite and flame retardant technology, applied in the field of halogen-free nanocomposite flame retardants and its preparation, can solve the problems of poor flame retardant effect, toxic hydrogen halide gas, etc., achieve good compatibility, protect the environment, and reduce dosage Effect

Active Publication Date: 2022-01-14
云南锡业集团(控股)有限责任公司研发中心
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a halogen-free nano-composite flame retardant and its preparation mainly for the traditional halogen-containing macromolecule single-component flame retardant, which produces toxic hydrogen halide gas and poor flame retardant effect when burned. method

Method used

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  • Halogen-free nano composite flame retardant and preparation method thereof
  • Halogen-free nano composite flame retardant and preparation method thereof
  • Halogen-free nano composite flame retardant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] (1) Na with a molar ratio of 1:2 2 SnO 3 , ZnCl 2 Add water, stir, Na 2 SnO 3 Mixed to a concentration of 0.1mol / L, magnetically stirred for 12 hours. Then transfer the stirred emulsion to a reaction kettle, and conduct a hydrothermal reaction at 150° C. for 1 hour; obtain nano-cubes of zinc hydroxystannate;

[0035] (2) Add the nanocubes obtained in (1) to 0.05mol / L NH 4 In the F aqueous solution, the content of nanocubes is 1g / L, and the hydrothermal reaction is carried out at 150°C for 1 hour to obtain zinc hydroxystannate nanocubes with a hollow structure;

[0036] (3) Prepare 0.1mol / L MgCl 2 Aqueous solution, 1g of zinc hydroxystannate nano-cubes with hollow structure obtained in (2) was added to the above clear liquid, after stirring for 1h, added to the alkali solution with a pH value greater than 11, the Mg 2+ as Mg(OH) 2 The form of precipitation wraps on the surface of zinc hydroxystannate nanocubes with a hollow structure, forming Mg(OH) 2 |ZnSn(OH) ...

Embodiment 2

[0040] (1) Na with a molar ratio of 1:2 2 SnO 3 , ZnCl 2 Add water, stir, Na 2 SnO 3 Mixed to a concentration of 2mol / L, magnetically stirred for 12h. Then transfer the stirred emulsion to a reaction kettle, and conduct a hydrothermal reaction at 150° C. for 1 hour; obtain nano-cubes of zinc hydroxystannate;

[0041] (2) Add the nanocubes obtained in (1) to 0.5mol / L NH 4 In the F aqueous solution, the content of the nanocubes is 10g / L, and the hydrothermal reaction is carried out at 150°C for 1 hour to obtain the nanocubes of zinc hydroxystannate with a hollow structure;

[0042] (3) Prepare 1mol / L of MgCl 2 Aqueous solution, 3g of zinc hydroxystannate nano cubes with hollow structure obtained in (2) are added to the above-mentioned clear liquid, after stirring for 1h, added in the alkaline solution with a pH value greater than 11, the Mg 2+ as Mg(OH) 2 The form of precipitation wraps on the surface of zinc hydroxystannate nanocubes with a hollow structure, forming Mg(...

Embodiment 3

[0046] (1) Na with a molar ratio of 1:2 2 SnO 3 , ZnCl 2 Add water, stir, Na 2 SnO 3 Mixed to a concentration of 2mol / L, magnetically stirred for 12h. Then transfer the stirred emulsion to a reaction kettle, and conduct a hydrothermal reaction at 150° C. for 1 hour; obtain nano-cubes of zinc hydroxystannate;

[0047] (2) Add the nanocubes obtained in (1) to 1mol / L NH 4 In the F aqueous solution, the content of the nanocubes is 20g / L, and the hydrothermal reaction is carried out at 150°C for 1 hour to obtain the nanocubes of zinc hydroxystannate with a hollow structure;

[0048] (3) Prepare 2mol / L of MgCl 2 Aqueous solution, 5g of zinc hydroxystannate nano-cubes with hollow structure obtained in (2) is added to the above-mentioned clear liquid, after stirring for 1h, added in the alkali solution with a pH value greater than 11, the Mg 2+ as Mg(OH) 2 The form of precipitation wraps on the surface of zinc hydroxystannate nanocubes with a hollow structure, forming Mg(OH) ...

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Abstract

The invention discloses a halogen-free nano composite flame retardant and a preparation method thereof. According to the method, the halogen-free nano composite flame retardant is prepared by coating magnesium hydroxide, zinc hydroxystannate and polyphosphazene layer by layer. Through compounding of magnesium hydroxide and zinc hydroxystannate, the flame retardation effect of the material is improved. Through synergism of polyphosphazene, a compact isolation protection layer is generated on the surface of the material, contact between combustibles and flames is isolated, carbon dioxide, ammonia gas and other nonflammable gases are released, and the oxygen content is reduced. The composite flame retardant nano structure with a large specific surface area improves the carbon residue amount during material combustion, a compact carbon layer plays a barrier role, and the compound halogen-free nano flame retardant can greatly improve the flame retardant property of the material.

Description

technical field [0001] The invention belongs to the field of flame retardant preparation, and in particular relates to a halogen-free nano-composite flame retardant and a preparation method thereof. Background technique [0002] With the rapid development of the economy, the application of polymer materials is becoming more and more extensive, but the hazards caused by its flammability are becoming more and more prominent, which directly poses a serious threat to our life and health, so the improvement of polymer materials The flame retardant performance is of great significance. [0003] Flame retardant is a special functional additive. At present, the development of flame retardant technology in my country is very mature and has a complete range. Flame retardants are mainly divided into: halogen-based flame retardants, phosphorus-based flame retardants, nitrogen-based flame retardants, silicon-based flame retardants, and boron-based flame retardants. Halogenated flame re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L85/02C08K9/10C08K7/24C08K3/22
CPCC08L27/06C08L2201/02C08L2201/22C08K2003/2224C08K2201/011C08L85/02C08K9/10C08K7/24C08K3/22Y02E60/10
Inventor 马殿普符泽卫方东张朗罗谈彭巨擘鲍庆煌覃德清袁英杰潘飞李俊
Owner 云南锡业集团(控股)有限责任公司研发中心
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