Amino resin-containing flame retardant and preparation method thereof

An amino resin and flame retardant technology, which is applied in the field of flame retardant, can solve the problems of increasing smoke hazard, unable to meet processing and use requirements, and increasing carbon monoxide concentration, and achieve the effect of reducing the concentration and toxicity of combustion smoke

Inactive Publication Date: 2011-05-25
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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  • Amino resin-containing flame retardant and preparation method thereof
  • Amino resin-containing flame retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method of a flame retardant containing amino resin, comprising the steps of:

[0041] 1) While stirring, add melamine pyrophosphate to water to form a suspension;

[0042] 2) Add aluminum sulfate aqueous solution to the suspension and keep it at 25°C for 120 minutes to obtain mixture A;

[0043] 3) Add ammonia solution to mixture A and keep at 25°C for 5 minutes to obtain mixture B;

[0044] 4) Add melamine formaldehyde resin to mixture B, adjust the pH to 5.0±0.5 with phosphoric acid, keep it at 25°C-30°C for 30 minutes, filter to make a paste flame retardant;

[0045] Among them, the number of moles 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; the weight ratio of melamine pyrophosphate to amino resin is: 100:6.

Embodiment 2

[0047] A preparation method of a flame retardant containing amino resin, comprising the steps of:

[0048] 1) While stirring, add melamine phosphate to ethanol to make a suspension;

[0049] 2) Add magnesium chloride aqueous solution to the suspension and keep it at 95°C for 5 minutes to obtain mixture A;

[0050] 3) Add aqueous sodium hydroxide solution to mixture A and keep at 95°C for 5 minutes to obtain mixture B;

[0051] 4) Add melamine formaldehyde resin to mixture B, adjust pH to 5.0±0.5 with phosphoric acid, keep at 100°C for 30 minutes, and rotary evaporate to remove all solvents to make powdered flame retardant products;

[0052] Among them, the number of moles of magnesium chloride per 100 grams of melamine phosphate is 1.71 moles; the molar ratio of magnesium chloride to sodium hydroxide is 1:8.0; the weight ratio of melamine phosphate to amino resin is 100:8.

Embodiment 3

[0054] A preparation method of a flame retardant containing amino resin, comprising the steps of:

[0055] 1) While stirring, add aminourea phosphate to toluene to form a suspension;

[0056] 2) Add zinc sulfate aqueous solution to the suspension and keep it at 50°C for 60 minutes to obtain mixture A;

[0057] 3) Add ammonia solution to mixture A and keep at 50°C for 60 minutes to obtain mixture B;

[0058] 4) Add melamine-modified urea-formaldehyde resin to mixture B, adjust the pH to 5.0±0.5 with phosphoric acid, keep it at 95°C for 60 minutes, evaporate in vacuum to remove part of the solvent, and make a paste flame retardant of the present invention;

[0059] Among them, the molar number of zinc sulfate added to every 100 grams of aminourea phosphate is 0.032 moles; the molar ratio of zinc sulfate ammonia water is 1:0.06; the weight ratio of aminourea phosphate to amino resin is 100:4.

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Abstract

The invention discloses an amino resin-containing flame retardant and a preparation method thereof. The flame retardant comprises a phosphorus-nitrogen series flame retardant, an inorganic flame retardant and amino resin, wherein the phosphorus-nitrogen series flame retardant is covered by the inorganic flame retardant; the inorganic flame retardant is covered by the amino resin; and the weight percentage ratio of the phosphorus-nitrogen series flame retardant to the inorganic flame retardant to the amino resin is 100:(1-100):(1-30). The flame retardant is applied to the flame retarding process of a plant fiber board, the physical and chemical properties, the processability and the service performance of the plant fiber board cannot be damaged, and the combustion smoke concentration and the toxicity of flame-retardant wooden materials in a fire disaster can be reduced.

Description

technical field [0001] The invention relates to the field of flame retardancy, in particular to a flame retardant containing amino resin 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. Five mandatory standards including 2006 "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" , made specific regulations on the flame retardant performance of building decoration materials and furniture, requiring that the combustion performance of materials used in public buildings and high-rise civil buildings should not be lower than the C grade of GB8624-2006 or the B1 grade of GB8624-1997. [0003] Plant fibe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K21/12C09K21/04C09K21/02
Inventor 罗文圣
Owner 北京盛大华源科技有限公司
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