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Compound fire retardant containing hydroxymethylated melamine silicide, preparation method and application thereof

A technology of methylolated melamine and composite flame retardant, which is applied in the field of composite flame retardant containing methylolated melamine silicide and its preparation, can solve the problem of reacting into a flame retardant and achieve life safety Small threat, high limiting oxygen index, good compatibility

Inactive Publication Date: 2011-02-02
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method only utilizes the synergistic flame retardant effect of silicon / nitrogen, and reacts melamine and silicon-containing compounds into the polymer respectively, and does not react the two into a flame retardant containing silicon / nitrogen elements

Method used

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  • Compound fire retardant containing hydroxymethylated melamine silicide, preparation method and application thereof
  • Compound fire retardant containing hydroxymethylated melamine silicide, preparation method and application thereof
  • Compound fire retardant containing hydroxymethylated melamine silicide, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of methylolated melamine silicide:

[0029] (1) Mix 100 parts by weight of melamine and 100 parts by weight of 37% formaldehyde solution, adjust pH=7 with 1 part by weight of triethylamine, and react for methylolation at 90°C for 20 minutes, and then rotary evaporation Removal of the remaining formaldehyde to obtain methylolated melamine;

[0030] (2) Add 300 parts by weight of ethyl orthosilicate, 200 parts by weight of methyltriethoxysilane, 1000 parts by weight of water, and 15 parts by weight of dibutyltin dilaurate to the reaction system of step (1) to adjust The temperature reaches 90° C., and after reacting for 5 hours, the precipitate is filtered, and the precipitate is dried to obtain a powdery methylolated melamine silicide.

[0031] Preparation of composite flame retardant containing methylolated melamine silicide: 100 parts by weight of methylolated melamine silicide prepared in this example, 1 part by weight of zinc borate, 1 part by weight of antimon...

Embodiment 2

[0034] Preparation of methylolated melamine silicide:

[0035] (1) Mix 100 parts by weight of melamine with 200 parts by weight of 30% formaldehyde solution, 6 parts by weight of triethylamine to adjust pH=9, at 85°C, methylolation reaction for 20 minutes, and then rotary evaporation to remove the remaining Formaldehyde to obtain hydroxylated melamine;

[0036] (2) Add 130 parts by weight of ethyl orthosilicate, 70 parts by weight of methyltriethoxysilane, 10 parts by weight of phenyltrimethoxysilane, 850 parts by weight of water, 8 parts by weight to the reaction system of step (1) Part of dibutyl tin dilaurate, adjust the temperature to 90° C., after reacting for 5 hours, filter the precipitate, and dry the precipitate to obtain powdery methylolated melamine silicide.

[0037] Preparation of composite flame retardant containing methylolated melamine silicide: 100 parts by weight of methylolated melamine silicide prepared in this example, 30 parts by weight of aluminum hydroxide, 4...

Embodiment 3

[0040] Preparation of methylolated melamine silicide:

[0041] (1) Mix 100 parts by weight of melamine and 400 parts by weight of 20% formaldehyde solution, 0.5 parts by weight of sodium hydroxide to adjust pH=7.5, at 80°C, methylolation reaction for 40 minutes, and then rotary evaporation to remove the remaining Of formaldehyde to obtain methylolated melamine;

[0042] (2) Add 25 parts by weight of methyltriethoxysilane, 25 parts by weight of dimethyldiethoxysilane, 0.25 parts by weight of aluminum trichloride, and 100 parts by weight of water to the reaction system of step (1) to adjust After the temperature reaches 85°C, the reaction is carried out for 2 hours, the precipitate is filtered, and the precipitate is dried to obtain a powdery methylolated melamine silicide.

[0043] Preparation of composite flame retardant containing methylolated melamine silicide: 100 parts by weight of the methylolated melamine silicide prepared in this example, 30 parts by weight of aluminum hydrox...

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Abstract

The invention relates to a compound fire retardant containing hydroxymethylated melamine silicide and application thereof. The compound fire retardant comprises the following components in parts by weight: 100 parts of hydroxymethylated melamine silicide, 5-100 parts of inorganic fire retardant and 0-100 parts of inorganic filler which are compounded. The compound fire retardant does not contain halogens, releases fewer toxic substances, is environmentally friendly and has smaller threat to the life safety of people. In addition, the compound fire retardant has the advantages of high heat stability, high limited oxygen index, strong fire resistance and better compatibility with polymer materials and can be used for effectively improving the heat resistance and the fire resistance of high polymer materials such as chloroethylene, epoxy resin, polypropylene, polyester, and the like. The development of the compound fire retardant successfully solves the problems of the traditional fire retardants of toxicity, environmental pollution, poor fire resistance, incompatibility with the high polymer materials, and the like.

Description

Technical field [0001] The invention relates to the field of flame retardant materials, in particular to a composite flame retardant containing methylolated melamine silicide, and a preparation method and application thereof. Background technique [0002] Currently, halogen-containing flame retardants are the most commonly used flame retardants in polymer materials. Halogen-containing polymer materials are prone to release toxic substances during the combustion process, posing a threat to people's lives. Therefore, due to the requirements of environmental protection and safety, nitrogen-containing flame retardants, as an intumescent flame retardant, have gradually attracted attention due to their advantages of halogen-free, low toxicity, and low smoke. [0003] At present, most researches on nitrogen-containing flame retardants are flame retardants containing triazine ring structure, among which melamine and its derivatives are the main ones. However, the compatibility of melamin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18C08K13/02C08L27/06C08K5/544C08L67/00C08L63/00C08L23/12
CPCY02P20/52
Inventor 刘伟区魏振杰
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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