Molecular composite trimeric cyanamide cyanurate fire retarder and its preparation method and application

A technology for compounding melamine cyanurate and melamine, which is applied in the field of molecular compound melamine cyanurate flame retardant and its preparation, can solve the problems of easy blooming on the surface, limit the scope of application, affect the flame retardant performance, etc., and achieve improvement Effects of melt fluidity, shortened reaction time, and improved processability

Active Publication Date: 2004-07-28
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because MCA is directly sublimated and decomposed by heating without melting process, MCA prepared by traditional methods is dispersed in the resin matrix in a rigid particle state during the process of melt blending with polymers, and its dispersion state has a great influence on the initial particle size of flame retardant particles. The size of the MCA flame retardant prepared by the traditional method is large in the resin, and the dispersion is uneven, which seriously affects its flame retardant performance.
In addition, the flame retardant efficiency of the currently commercialized MCA to reinforced or filled polymers, espe

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment

[0029] 1. Dissolve 1kg of glycerol in 30kg of water in the reaction kettle, then add 4kg of melamine and 4.08kg of cyanuric acid into the reaction kettle, stir and react for 30 minutes at a temperature of 90°C, and obtain a viscous paste. The solids are filtered, dried and pulverized to obtain a powder product with an average particle diameter of 3 μm.

[0030] 2. Dissolve 1kg of pentaerythritol in 20kg of water in a reaction kettle, then add 0.1kg of flame retardant synergist phosphotungstic acid, 6kg of melamine and 6.12kg of cyanuric acid in sequence, stir and react at 110°C for 10 minutes to obtain a viscous paste Add water 3kg 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 0.5kg of water-soluble starch and 0.5kg of pentaerythritol in 2kg of water in a reaction kettle, then add 0.5kg of melamine and 0.51kg of cyanuric acid, and ...

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PUM

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Abstract

The present invention relates to a molecular compounded trimeric cyanamide cyanurate fire-retarding agent, its preparation method and application. Its preparation includes the folloiwng steps: adding 10-300 portions of recombiner and 100-2000 portions of water in the reactor still with stirrer and thermometer, making them be completely dissolved at 50-130 deg.C, then successively adding 0-300 portions of fire-retarding synergist, 50-100 portions of trimeric cyanamide and 50-110 portions of cyanuric acid, stirring and reacting for 5 min-2 hr, at 50-150 deg.C, in the course of reaction can more adding 100-1000 portions of water so as to obtain the white emulsion or viscous paste-like material of molecular compounded trimeric cyanamide cyanurate.

Description

1. Technical field [0001] The invention relates to a molecular composite melamine cyanurate flame retardant and a preparation method thereof, belonging to the field of preparation of flame retardant polymer materials. 2. Background technology [0002] Melamine cyanurate (MCA) is a multifunctional fine chemical developed by Japan in the early 1980s. Its molecular structure is a triazine ring molecular complex composed of melamine and cyanuric acid through secondary bonds. Its appearance is slippery. Sensitive white crystalline powder, non-toxic, tasteless, insoluble in water and common organic solvents. It is stable below 300°C, and begins to sublimate at 400°C and decomposes into melamine and cyanuric acid at the same time. MCA has the characteristics of flame retardancy, lubrication and matting, and can be used in the fields of plastic flame retardancy, mechanical lubrication, paint matting, cosmetics and printing and dyeing. In recent years, with the development of the g...

Claims

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Application Information

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IPC IPC(8): C08K5/3495
Inventor 王琪刘渊陈英红卢灿辉华正坤
Owner SICHUAN UNIV
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