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Flame retardant and preparation method thereof

A flame retardant, nitrogen-based flame retardant technology, applied in the field of flame retardant, can solve the problems of increased smoke hazards, reduced mechanical properties, increased carbon monoxide concentration, etc., and achieves the effect of increased combustion smoke hazards

Active Publication Date: 2010-11-10
北京盛大华源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphorus-nitrogen compounds have good flame retardant properties, wide sources, and low prices, but the main problem of using phosphorus-nitrogen compounds to produce flame-retardant plant fiberboards is: compared with ordinary fiberboards of the same specification, the mechanical properties are reduced by 15-45%; Hygroscopicity and water absorption thickness expansion rate increase, which cannot meet the processing and use requirements; at high temperature, phosphorus-nitrogen compounds promote dehydration and carbonization of wood components into inactive carbon, resulting in an increase in the concentration of carbon monoxide in the smoke, making the smoke in the fire more harmful. increase
The addition of a large number of inorganic materials seriously damages the processing performance and performance of plant fiberboard

Method used

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  • Flame retardant and preparation method thereof
  • Flame retardant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A preparation method of flame retardant, comprising the steps of:

[0034] 1) While stirring, add melamine pyrophosphate to water to form a suspension;

[0035] 2) adding an aqueous solution of aluminum sulfate to the suspension, and keeping it at 5°C for 120 minutes to obtain mixture A;

[0036] 3) Add ammonia solution to mixture A, and keep it at 5°C for 5 minutes; obtain mixture B;

[0037] 4) Add r-aminoethyl-B-aminopropyltrimethoxysilane to the mixture B, keep it at 5°C for 120 minutes; filter to make a paste flame retardant;

[0038]Among them, the molar number of aluminum sulfate added per 100 grams of melamine pyrophosphate is 0.0064 moles; the molar ratio of aluminum sulfate to ammonia water is 1:0.001; melamine pyrophosphate and r-aminoethyl-B-aminopropyltrimethoxy The weight ratio of base silane is: 100:0.01.

Embodiment 2

[0040] A preparation method of flame retardant, comprising the steps of:

[0041] 1) while stirring, melamine phosphate is added into ethanol to form a suspension;

[0042] 2) adding an aqueous solution of magnesium chloride to the suspension and keeping it at 95°C for 5 minutes to obtain mixture A;

[0043] 3) Add aqueous sodium hydroxide solution to mixture A, and keep it at 95°C for 5 minutes; obtain mixture B;

[0044] 4) Add r-vinyltriethoxysilane to the mixture B, and keep it at 95°C for 30°C; rotary evaporation to remove all the solvents, and make the powdered flame retardant product of the present invention;

[0045] Wherein, the number of moles of magnesium chloride added in every 100 grams of melamine phosphate is 1.71 moles; the mol ratio of magnesium chloride and sodium hydroxide is 1: 8.0; the weight ratio of melamine phosphate and r-vinyltriethoxysilane is: 100:5.

Embodiment 3

[0047] A preparation method of flame retardant, comprising the steps of:

[0048] 1) While stirring, add aminourea phosphate to toluene to form a suspension;

[0049] 2) adding an aqueous solution of zinc sulfate to the suspension, and keeping it at 50°C for 60 minutes to obtain mixture A;

[0050] 3) Add ammonia solution to mixture A, and keep it at 50°C for 60 minutes; obtain mixture B;

[0051] 4) Add r-methacryloxypropyltrimethoxysilane to the mixture B, keep it at 50°C for 60 minutes; vacuum evaporate to remove part of the solvent, and make a paste flame retardant of the present invention;

[0052] Among them, the number of moles of zinc sulfate added per 100 grams of phosphide urea is 0.032 moles; the molar ratio of zinc sulphate to ammonia water is 1:0.06; The weight ratio of silane is: 100:3.

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Abstract

The invention discloses a flame retardant and a preparation method thereof. The flame retardant comprises a phosphorus-nitrogen series flame retardant, an inorganic flame retardant and a silane coupling agent, wherein the phosphorus-nitrogen series flame retardant is wrapped by the inorganic flame retardant; the inorganic flame retardant is wrapped by the silane coupling agent; and the weight ratio of the phosphorus-nitrogen series flame retardant to the inorganic flame retardant to the silane coupling agent is 100:1-100:0.01-5. By using the flame retardant, the physicochemical property, the machining performance and the service performance of a plant fiber board cannot be damaged in the flame retarding process of the plant fiber board, the chemical reaction process of the flame retardant and timber cannot be changed at a high temperature and the harm of combustion smoke gas of a flame-retardant wooden material cannot be increased.

Description

technical field [0001] The invention relates to the field of flame retardant, in particular to a flame retardant and a preparation method thereof. Background technique [0002] The Ministry of Public Security and the Ministry of Construction promulgated and implemented the "Code for Fire Protection Design of Building Interior Decoration" in 1992, and the General Administration of Quality Supervision, Inspection and Quarantine issued GB 8624-2006 "Classification of Combustion Performance of Building Materials and Products" and GB / T 20284-2006 in 2006 Five mandatory standards including "Single Combustion Test of Building Materials or Products", GB / T20285-2006 "Classification of Toxicity Hazards for Smoke Production of Materials" and GB20286-2006 "Requirements and Labeling of Flame-Retardant Products and Components in Public Places", Specific provisions have been made on the flame retardant performance of building decoration materials and furniture, requiring that the combustio...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08K9/06C08K9/02C08K3/32C08K5/52C08K5/521C08L1/02C08L5/14
Inventor 罗文圣
Owner 北京盛大华源科技有限公司
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