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Preparation method of melamine glyoxal microsphere in child-mother shape

A technology of melamine glyoxal and sub-mother morphology is applied in the field of preparation of melamine glyoxal microspheres, and can solve the problems of complex processing technology, poor thermal stability of resin microspheres, low specific surface area and the like

Inactive Publication Date: 2014-07-16
HEILONGJIANG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of complex processing technology in the existing preparation method of resin microspheres, poor thermal stability and low specific surface area of ​​the prepared resin microspheres, and provide a kind of melamine glyoxal microspheres with mother-in-child morphology. Ball Preparation Method

Method used

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  • Preparation method of melamine glyoxal microsphere in child-mother shape
  • Preparation method of melamine glyoxal microsphere in child-mother shape
  • Preparation method of melamine glyoxal microsphere in child-mother shape

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specific Embodiment approach 1

[0012] Specific embodiment one: this embodiment is a kind of preparation method of the melamine glyoxal microsphere with mother-in-law appearance, specifically is finished according to the following steps: 1, glyoxal and melamine are added in deionized water, in oil Stir at a bath temperature of 60°C until evenly mixed, then raise the temperature to 180°C to 220°C within 1h to 1.5h, condense and reflux at a temperature of 180°C to 220°C for 20 to 26h, stop heating and naturally cool to room temperature to obtain melamine B Dialdehyde reaction solution; 2. Ultrasonic disperse the melamine glyoxal reaction solution obtained in step 1 until uniform, then wash it with deionized water for 2 to 3 times, wash it with ethanol for 1 to 2 times, and then wash it at 5000~8000r / min Centrifuge down, remove the supernatant, take the lower precipitate and place it in an oven at 60-90° C. to dry for 8-12 hours to obtain melamine glyoxal microspheres with the shape of mother and child.

[0013...

specific Embodiment approach 2

[0017] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the glyoxal described in step 1 is an aqueous solution of glyoxal with a mass fraction of 40%. Others are the same as the first embodiment.

specific Embodiment approach 3

[0018] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the volume ratio of glyoxal to deionized water in step 1 is (10-20):30. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a preparation method of a melamine glyoxal microsphere in a child-mother shape, relating to a preparation method of the melamine glyoxal microsphere and aiming at solving the problems of complex processing process and poor heat stability and small specific area of a prepared resin microsphere of the preparation method of the traditional resin microsphere. The preparation method comprises the following steps of: 1, adding glyoxal and melamine to deionized water, stirring and uniformly mixing under the condition of oil bath, then carrying out condensation reflux reaction, and cooling to room temperature to obtain melamine glyoxal reaction liquid; 2, ultrasonically dispersing, washing, centrifugalizing and drying the melamine glyoxal reaction liquid to obtain the melamine glyoxal microsphere in the child-mother shape. The preparation method disclosed by the invention is in the child-mother shape, prevents the aspects of complex synthesis process, poor heat stability and the like of the traditional resin sphere, overcomes the defect of small specific area of the microsphere and is mainly used for preparing the melamine glyoxal microsphere in the child-mother shape.

Description

technical field [0001] The invention relates to a preparation method of melamine glyoxal microspheres. Background technique [0002] With the economic globalization and the urgent demand of human beings for energy storage materials, carbon materials, as a leader, are also developing more rapidly. This has been confirmed by the development of carbon nanotubes to graphene to spherical carbon materials. However, as a precursor for the synthesis of carbon materials, the development of various resin microspheres has also become an important aspect. The research on various resin balls at home and abroad mainly includes phenolic resin microspheres, urea-formaldehyde resin microspheres, melamine-formaldehyde resin microspheres, etc. Although these microspheres have extremely high chemical stability, monodispersity and good electrochemical properties, their poor thermal stability and insufficient specific surface area still limit their application in some aspects. Contents of the...

Claims

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Application Information

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IPC IPC(8): C08G12/32
Inventor 孙立国白英玮邢维干张艳红汪成
Owner HEILONGJIANG UNIV
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