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Microencapsulated red phosphorus, and preparation method and application thereof

A technology of microencapsulated red phosphorus and red phosphorus, applied in chemical instruments and methods, fibrous fillers, dyed low-molecular organic compound treatment, etc., can solve the problems of poor compatibility of resin materials, poor flame retardant effect, and flame retardant It is beneficial to large-scale industrial production, low water absorption, and good flame retardant effect.

Active Publication Date: 2016-10-12
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The current method of modifying the surface of red phosphorus has the disadvantages of poor compatibility with resin materials, poor flame retardant effect, large amount of flame retardant, cumbersome process, and high cost.

Method used

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  • Microencapsulated red phosphorus, and preparation method and application thereof
  • Microencapsulated red phosphorus, and preparation method and application thereof
  • Microencapsulated red phosphorus, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Preparation of microcapsule red phosphorus coated with aluminum hypophosphite

[0069] 10 g of red phosphorus, 100 ml of deionized water and 44.77 g of sodium hypophosphite monohydrate were added into the reaction vessel and heated to 95° C., mixed and stirred for 15 minutes. Slowly drip 30.03g of aluminum chloride solution with a mass concentration of 50% into the system for 1.5 hours, adjust the pH value of the system to 2-3 with hydrochloric acid, keep stirring for 2 hours, and coat the aluminum hypophosphite on the On the outside of the red phosphorus particles, a single-layer coated microcapsule red phosphorus is obtained, which is designated as sample 1 # .

Embodiment 2

[0071] Preparation of microcapsule red phosphorus coated with aluminum hypophosphite

[0072] Add 10 g of red phosphorus, 100 ml of deionized water, 44.77 g of sodium hypophosphite monohydrate and 0.05 g of sodium dodecylbenzenesulfonate into a reaction vessel, heat to 95° C., and mix and stir for 15 minutes. Slowly drip 30.03g of aluminum chloride solution with a mass concentration of 50% into the system for 1.5 hours, adjust the pH value of the system to 2-3 with hydrochloric acid, keep stirring for 2 hours, and coat the aluminum hypophosphite on the On the outside of the red phosphorus particles, a single-layer coated microcapsule red phosphorus is obtained, which is designated as sample 2 # .

Embodiment 3

[0074] Preparation of microcapsule red phosphorus coated with aluminum hypophosphite

[0075] Add 10 g of red phosphorus, 50 ml of deionized water, 71.63 g of sodium hypophosphite monohydrate and 0.05 g of sodium dodecylbenzenesulfonate into a reaction vessel, heat to 75° C., and mix and stir for 30 minutes. Slowly drip 48.06g of aluminum chloride solution with a mass concentration of 50% into the system for 2 hours, adjust the pH value of the system to 2-3 with hydrochloric acid, keep stirring for 6 hours, and coat the aluminum hypophosphite on the On the outside of the red phosphorus particles, a single-layer coated microcapsule red phosphorus is obtained, which is recorded as sample 3 # .

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Abstract

The invention provides microencapsulated red phosphorus, and a preparation method and application thereof. The microencapsulated red phosphorus is prepared from red phosphorus and a coating layer outside the red phosphorus; the microencapsulated red phosphorus is characterized in that the coating layer is a coating layer I containing inorganic hypophosphite, optionally, a coating layer II containing an organic compound also wraps the outside of the coating layer I. The microencapsulated red phosphorus provided by the invention is used as a flame retardant, the whitening degree is high, the heat resistance is good, the water absorption is low, the compatibility with high polymer materials is better, and the influence on mechanical performance of the high molecular materials due to the adding of the flame retardant can be reduced.

Description

technical field [0001] The application relates to a microcapsule red phosphorus, its preparation method and its application in the flame retardant of polymer materials, belonging to the technical field of flame retardant modification of polymer materials. Background technique [0002] Polymer materials, also known as polymer materials, have the advantages of low density, good mechanical properties, easy processing, and high economy, and are widely used in daily life. Most of the polymer materials currently used are flammable, which can easily cause fires and cause loss of life and property. Therefore, the flame retardancy of polymer materials has always been a research hotspot. [0003] Among polymer materials, engineering plastics, especially glass fiber reinforced engineering plastics, are often used in the fields of automobiles, machinery industry, electronics and electrical appliances. The "candle wick effect" makes these engineering plastics more flammable, so it is n...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08K3/02C08L77/06C08L77/02C08L67/02C09C1/00C09C3/06C09C3/10C09C3/08
CPCC08K3/02C08K9/10C08K2003/026C08L2201/02C09C1/00C09C3/006C09C3/06C09C3/08C09C3/10C08L77/06C08L77/02C08L67/02
Inventor 姚强许晨祥
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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