Melamine cyanuric acid red phosphorous-based microcapsule and its preparation method and use

A technology of melamine cyanuric acid and microcapsule red phosphorus, which is applied in the field of melamine cyanurate microcapsule red phosphorus and its preparation, can solve the problems of reduced mass transfer and heat transfer efficiency and difficulty in stirring, and achieves easy operation and simple process Effect

Inactive Publication Date: 2005-06-29
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of flame-retardant melamine cyanurate is generally made of melamine and cyanuric acid as raw materials, and water is used as the dispersion medium. Continuously rising, the state of the material changes from a flowable slurry to a non-flowable paste. The self-thickening effect during the preparation of melamine cyanurate will make stirring difficult, and the efficiency of mass and heat transfer will be reduced. Generally, water should be added. / reactant ratio to overcome

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] 1. Dissolve 1kg of dicyandiamide in 30kg of water in the reaction kettle, add 20kg of red phosphorus micropowder, stir to make it evenly dispersed, then add 50kg of melamine and 50kg of cyanuric acid into the reaction kettle, and stir for 1 hour at a temperature of 95°C , Obtained viscous paste, which is filtered, dried, and pulverized to obtain a powder product with an average grain size of 3 μm.

[0030] 2. Dissolve 10kg of flame retardant synergist triethanolamine and 5kg of phosphotungstic acid in 200kg of water in the reaction kettle, add 30kg of red phosphorus micropowder, stir to make it evenly dispersed, then add 60kg of melamine and 60kg of cyanuric acid in turn, at a temperature of 110 Stir and react at ℃ for 30 minutes to obtain a viscous paste, add 50 kg of water and continue to react for 20 minutes, and the obtained emulsion is centrifuged, dried and pulverized to obtain a powder product with an average particle diameter of 10 μm.

[0031] 3. Dissolve 3kg o...

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PUM

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Abstract

Disclosed are melamine and its preparing method and application, with the characteristics that add 10-300 portions of red phosphorus powder, 100-1000portions of water into reactor with agitator and thermometer, make them to be dispersion in 50-130deg.C, the add into 0-300portions of antiflaming synergistic agent, 50-100 portions of melamine and 50-200 portions of cyanuric acid (emulsion or cream of ), which are stirred for 5 minutes to 2 hours in 50-150deg.C, in the course, can add into 100-1000 portions of water, generate the emulsion or cream of cyanuric acid which are filtered, are centrifugal separated, dried and scattered to be 0.01-500um powder product. The product can be used as flame retardant of polymer or method with other flame retardant.

Description

1. Technical field [0001] The invention relates to melamine cyanurate microcapsule red phosphorus and a preparation method thereof, belonging to the field of flame retardant preparation. 2. Background technology [0002] Red phosphorus is an amorphous inorganic polymer. Its appearance is dark red particles. It has strong hygroscopicity and is easy to burn and explode. Its ignition point temperature is 250°C. Red phosphorus is oxidized by heating to form phosphorus oxide. In the combustion environment of high polymers generated by water , quickly converted into metaphosphoric acid, phosphoric acid and polyphosphoric acid to cover the surface of the combustible, which plays a protective and shielding role. Mixed phosphoric acid has a strong dehydration and carbonization effect on high polymers at higher temperatures, and can A stable glass carbonization layer is formed to further enhance the flame retardant effect of the condensed phase of the material. In addition, the PO fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K21/10
Inventor 王琪刘渊陈英红华正坤
Owner SICHUAN UNIV
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