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Boron-nitrogen composite flame retardant and preparation method thereof

A composite flame retardant, boron nitrogen technology, applied in the direction of flame retardant fibers, textiles, papermaking, fiber treatment, etc., can solve problems such as hydrolysis instability, achieve the effect of low cost, simple preparation method, and mild conditions

Inactive Publication Date: 2020-06-02
ZIBO WUWEI INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic boron flame retardant has very good flame retardant performance, but there are problems such as hydrolysis instability

Method used

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  • Boron-nitrogen composite flame retardant and preparation method thereof
  • Boron-nitrogen composite flame retardant and preparation method thereof
  • Boron-nitrogen composite flame retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1, add 18.4g (0.1mol) of cyanuric chloride and 276mL water to the flask and stir, slowly add 80% 23.4g (0.5mol) of hydrazine hydrate solution dropwise to the above-mentioned flask, reflux and stir for 2h, and the reaction ends Afterwards, cool to room temperature, suction filter and wash with water to obtain melamine salt, white product 15.2g, yield 89.41%;

[0025] Step 2, weigh 15.2g (1eq) of melamine salt and 18.1g (3.3eq) of boric acid obtained in step 1, put them into a 250mL round bottom flask, add 50mL of absolute ethanol and stir at 70°C for 6h, use a rotary evaporator to remove the ethanol, A boron-nitrogen composite flame retardant is obtained. The infrared spectrum of the flame retardant is as follows figure 1 As shown, the thermogravimetric analysis spectrum is as image 3 shown.

Embodiment 2

[0027] Step 1, take 7.4g of cyanuric chloride, add 40mL of acetone, stir until dissolved, add 36g of ethylenediamine and 16g of sodium carbonate into deionized water at a temperature of 80°C, stir until completely dissolved, and put the The aqueous solution of ethylenediamine and sodium carbonate is added dropwise to the acetone solution of cyanuric chloride, stirred at room temperature for 7 hours, after the reaction is completed, vacuum filtration is carried out, and the solid powder is washed with deionized water for 3 times for purification to obtain melamine Salt 5.1g, yield 49.85%;

[0028] Step 2, weigh 5.1g (1eq) of melamine salt obtained in step 1, and 4.1g (3.3eq) of boric acid, put them into a 250mL round bottom flask, add 20mL of absolute ethanol and stir at 70°C for 6h, use a rotary evaporator to remove the ethanol, A boron-nitrogen composite flame retardant is obtained. The infrared spectrum of the flame retardant is as follows figure 2 As shown, the thermogra...

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Abstract

The invention provides a boron-nitrogen composite flame retardant and a preparation method thereof. The preparation method comprises the following steps that 1, dissolving cyanuric chloride in a solvent, adding organic amine, controlling the temperature to range from 20 DEG C to 100 DEG C, and carrying out constant-temperature stirring for 2-7 h to obtain melamine salt; and 2, mixing the melaminesalt obtained in the step 1 with boric acid, adding an organic solvent for dissolving, carrying out heating to 50-75 DEG C, carrying out stirring for 4-6 hours at a constant temperature, and after thereaction is finished, carrying out rotary evaporation to remove the organic solvent, thereby obtaining the boron-nitrogen composite flame retardant. The preparation method of the boron-nitrogen composite flame retardant is simple, convenient and safe to operate, low in cost, mild in condition and high in yield. The flame retardant has the advantages of potential smoke suppression effect and low toxicity, and is beneficial to environmental protection.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis, and in particular relates to a boron-nitrogen composite flame retardant and a preparation method thereof. Background technique [0002] Most polymer materials are flammable and prone to fire during use, so it is of great significance to research and develop new and efficient flame retardants. Flame retardants can improve the combustion performance of polymer materials. The polymer materials modified by flame retardants can effectively prevent, delay or terminate the spread of flames when attacked by external fire sources, so as to achieve the effect of flame retardancy. . [0003] Boron-based flame retardants are a class of flame retardants that are widely used, including inorganic boron flame retardants and organic boron flame retardants. Boron-based flame retardants have the advantages of good thermal stability, low toxicity, and smoke suppression, and have good compounding effects ...

Claims

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Application Information

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IPC IPC(8): C08K5/3492C08K3/38D06M11/82D06M13/364D06M101/06
CPCC08K3/38C08K5/34928D06M11/82D06M13/364D06M2101/06D06M2200/30
Inventor 冯永成王晓辉刘茂海
Owner ZIBO WUWEI INDAL
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