Preparation method for melamine cyanurate nanosheet microsphere and application thereof

The technology of melamine cyanurate and melamine is applied in the field of preparation of nano-sheet micro-spherical melamine cyanurate, which can solve the problems of uneven dispersion, bridging of feeding materials, poor fluidity of powder, etc. The effect of preventing feeding bridging and high flame retardant efficiency

Active Publication Date: 2019-10-11
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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  • Preparation method for melamine cyanurate nanosheet microsphere and application thereof
  • Preparation method for melamine cyanurate nanosheet microsphere and application thereof
  • Preparation method for melamine cyanurate nanosheet microsphere and application thereof

Examples

Experimental program
Comparison scheme
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 preparation method for a melamine cyanurate nanosheet microsphere and an application thereof. The preparation method comprises the following steps: performing a mixing reaction on a cyanuric acid, melamine, water and a dispersant in a double-planetary-type mixing machine and preparing melamine cyanurate, adding the dispersant in a reaction process, reducing interface freeenergy, and reducing a hydrogen bond binding force between nanosheets, thereby controlling agglomeration between the nanosheets, and forming 4-6 um of nanosheet microspheres. A product prepared by the preparation method has the advantages of good powder flowability, easy dispersion and high inflaming retarding efficiency, and is easy to feed and process in a PA66 application process. The nanosheet has a very large specific surface area, so the flame retarding effect of the melamine cyanurate is promoted to be developed, and flame retarding efficiency is improved.

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 Applications(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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