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Melamine-modified lignin coated red phosphorus flame retardant and application thereof in ABS (Acrylonitrile Butadiene Styrene) resin

A melamine-coated red phosphorus technology, which is applied in the field of polymer materials, can solve the problems of easy explosion, limit the application of red phosphorus, increase the difficulty of red phosphorus transportation and storage, and achieve good weather resistance, broad application prospects, and thermal stability. Good results

Inactive Publication Date: 2018-12-21
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when red phosphorus exists in the form of dust, it is easy to explode, and it will react to produce highly toxic phosphine in a high-temperature environment, which increases the difficulty of carrying and storing red phosphorus, and greatly limits the application of red phosphorus.

Method used

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  • Melamine-modified lignin coated red phosphorus flame retardant and application thereof in ABS (Acrylonitrile Butadiene Styrene) resin
  • Melamine-modified lignin coated red phosphorus flame retardant and application thereof in ABS (Acrylonitrile Butadiene Styrene) resin
  • Melamine-modified lignin coated red phosphorus flame retardant and application thereof in ABS (Acrylonitrile Butadiene Styrene) resin

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Weigh 5.6g (0.1mol) potassium hydroxide in a beaker, add deionized water to make a 2wt% potassium hydroxide solution, then add 10g organic lignin to the obtained potassium hydroxide solution, heat and stir to dissolve, then pour Put it into a three-necked flask equipped with an electric stirrer, a thermometer, and a reflux condenser, heat it in an oil bath to 80°C under the stirring condition of 200 rpm, add 0.2mol of formaldehyde, react for 3 hours, then add 12.6g (0.1mol) of melamine, and continue to keep warm After stirring and reacting for 3 hours, pour the reaction product into a beaker, add 6g of red phosphorus and 0.03g of sodium dodecylbenzenesulfonate, stir well to completely disperse the red phosphorus, then slowly add hydrochloric acid to neutralize until the solution is neutral, Then stir the reaction at 80°C and 200 rpm for 2h, age the suspension obtained from the reaction for 12h, vacuum filter, and dry the filtered product in an oven at 80°C for 24h, crush...

Embodiment 2

[0029] Weigh 8g (0.2mol) sodium hydroxide in a beaker, add deionized water to make 4wt% sodium hydroxide solution, then add 10g enzymatic lignin to the obtained sodium hydroxide solution, heat and stir to dissolve, pour Put it into a three-necked flask equipped with an electric stirrer, a thermometer, and a reflux condenser, heat it in an oil bath to 90 °C under the stirring condition of 400 rpm, add 0.3 mol of formaldehyde, react for 2 hours, then add 12.6 g (0.1 mol) of melamine, and continue to keep warm After stirring and reacting for 2 hours, pour the reaction product into a beaker, add 8g of red phosphorus and 0.04g of sodium dodecylbenzenesulfonate, stir well to completely disperse the red phosphorus, then slowly add sulfuric acid to neutralize until the solution is neutral. Then stir the reaction at 90°C and 400 rpm for 1h, age the suspension obtained from the reaction for 18h, vacuum filter, and dry the filtered product in an oven at 90°C for 18h, then crush and sieve ...

Embodiment 3

[0031] Weigh 12g (0.3mol) sodium hydroxide in a beaker, add deionized water to make a 6wt% sodium hydroxide solution, then add 20g of enzymatic lignin to the obtained sodium hydroxide solution, heat and stir to dissolve, pour Put it into a three-necked flask equipped with an electric stirrer, a thermometer, and a reflux condenser, heat it in an oil bath to 100 °C under the stirring condition of 300 rpm, add 0.4 mol of butyraldehyde, react for 1 hour, then add 25.2 g (0.2 mol) of melamine, continue After insulated and stirred for 1 hour, pour the reaction product into a beaker, add 10g of red phosphorus and 0.1g of sodium lauryl sulfate, stir well to completely disperse the red phosphorus, then slowly add hydrochloric acid to neutralize until the solution is neutral, then Stir the reaction at 100°C and 300 rpm for 0.5h, age the suspension obtained from the reaction for 24h, vacuum filter, dry the filtered product in an oven at 100°C for 12h, crush and sieve to obtain melamine-mo...

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Abstract

The invention discloses a melamine-modified lignin coated red phosphorus flame retardant and application thereof in ABS (Acrylonitrile Butadiene Styrene) resin, which belongs to the field of polymer materials. In the invention, lignin, aldehyde, melamine, red phosphorus and dispersant are mainly used as raw materials, and Mannich reaction and a chemical coprecipitation method are used to prepare melamine-modified lignin coated red phosphorus flame retardant. The melamine-modified lignin coated red phosphorus flame retardant disclosed by the invention can significantly improve the surface properties and instability of red phosphorus, and improve the compatibility with the polymer material. The flame retardant has a good flame retardant effect when applied in ABS resin, and the used lignin is a renewable biomass material, which is cheap and easy to obtain.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a preparation method of an organic-coated red phosphorus flame retardant and its application in ABS resin. Background technique [0002] As one of the four major engineering plastics, ABS (acrylonitrile-butadiene-styrene terpolymer) has the advantages of good toughness, impact resistance, and easy processing, and is widely used in various fields. In recent years, with the rapid development of electronics and automobile industries, the demand for ABS resin is increasing day by day. However, ABS resin is extremely flammable, its limiting oxygen index is only 18.4, and its horizontal combustion speed is relatively fast, and it will produce a large amount of black smoke and toxic gases during combustion, which poses a serious threat to the human body and the environment. Therefore, how to improve the flame retardant performance of ABS resin has become an important topic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K3/02C08L55/02C08L97/00C08H7/00
CPCC08H6/00C08K3/02C08K9/10C08K2003/026C08L55/02C08L2201/02C08L2201/08C08L97/005
Inventor 熊雷钟柔潮靳艳巧吕秋丰
Owner FUZHOU UNIV
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