A kind of preparation method and application of melamine cyanurate nano sheet microsphere

A technology of melamine cyanurate and melamine, which is applied in the field of preparation of nano-sheet microspherical melamine cyanurate, can solve the problems of poor powder fluidity, uneven dispersion, feeding bridging, etc., and overcome high viscosity, The powder has good fluidity and the effect of preventing feeding bridging

Active Publication Date: 2022-04-08
JINAN TAIXING FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the size of nano-MCA is too small and the fluidity of the powder is poor. In practical applications, there are often problems of feeding bridging and uneven dispersion.

Method used

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  • A kind of preparation method and application of melamine cyanurate nano sheet microsphere
  • A kind of preparation method and application of melamine cyanurate nano sheet microsphere
  • A kind of preparation method and application of melamine cyanurate nano sheet microsphere

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Experimental program
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Effect test

Embodiment 1

[0040] Add 20kg cyanuric acid (purity 98.5%) and 19.2kg melamine (purity 99.5%) in 50L reactor, after stirring and mixing evenly, add 23.5kg water, heat up to 90~95 ℃. After 1 hour, 31.36 g of sodium alkylphenol phenyl ester disulfonate was added, and the reaction was continued for 2 hours. Dry to obtain melamine cyanurate nanosheet microspheres with an average particle diameter of 4.8 μm.

[0041] figure 1 Shown is the SEM collection of illustrative plates of the melamine cyanurate nano sheet microsphere prepared by the present embodiment, by figure 1 It can be seen that the microsphere is composed of nanosheets with a thickness of about 30 nm and a width of about 200 nm.

Embodiment 2

[0043] Add 39.2 g of sodium alkylphenol phenyl ester disulfonate after heating up to 90-95°C for 1 hour. The rest are the same as embodiment 1.

Embodiment 3

[0045] Add 31.6g fatty alcohol polyoxyethylene 30 ether methyl silane after heating up to 90-95°C for 0.5h. The rest are the same as embodiment 1.

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Abstract

The invention discloses a method for preparing melamine cyanurate nanosheet microspheres and its application. In the invention, cyanuric acid, melamine, water and a dispersant are mixed and reacted in a double planetary mixer to prepare melamine cyanurate. A dispersant is added during the reaction to reduce the interfacial free energy and the hydrogen bonding force between the nanosheets, thereby controlling the agglomeration between the nanosheets and forming 4-6 μm nanosheet microspheres. The product of the present invention has the advantages of good powder fluidity, easy dispersion, and high flame retardant efficiency; it is easy to cut and process PA66 in the application process; the nanosheet has a very large specific surface area, which promotes the flame retardant effect of melamine cyanurate The play, improve the flame retardant efficiency.

Description

technical field [0001] The invention relates to a preparation method of nanosheet microspherical melamine cyanurate, which belongs to the technical field of chemical material preparation. Background technique [0002] Melamine cyanurate (MCA) is a typical representative of nitrogen-based halogen-free flame retardants. Its flame-retardant element nitrogen content is 49.4%, which can endow polymer materials with excellent flame-retardant properties. It is widely used in substrates such as butanediol diformate, polyurethane, polypropylene, and epoxy resin, and has the characteristics of halogen-free, low toxicity, and environmental protection. [0003] At present, the production method of MCA in the industry is still dominated by the cyanuric acid method, that is, water is used as the reaction medium, and cyanuric acid and melamine are mixed and reacted under certain process conditions, and MCA is obtained through filtration, washing, drying and other processes. With the incre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D251/56C07D251/32C08L77/06C08K7/16C08K5/3492
CPCC07D251/56C07D251/32C08K7/16C08K5/34924C08L2201/02C08K2201/011C08K2201/003C08L77/06
Inventor 孙晓丽姜艳岭白振华肖学文赵全念徐亮隋东升段金凤王艳辉索伟
Owner JINAN TAIXING FINE CHEM
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