Method for synthesizing melamine urea formaldehyde resin microsphere

A technology of melamine urea-formaldehyde resin and melamine is applied in the field of synthesizing a kind of polymer microspheres, which can solve the problem of not obtaining urea-formaldehyde resin microspheres and the like, and achieve the effect of uniform particle size distribution

Inactive Publication Date: 2013-06-05
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent does not obtain urea-formaldehyde resin microspheres

Method used

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  • Method for synthesizing melamine urea formaldehyde resin microsphere
  • Method for synthesizing melamine urea formaldehyde resin microsphere
  • Method for synthesizing melamine urea formaldehyde resin microsphere

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0022] Add 0.0225g of melamine into a 100mL beaker containing 40mL of distilled water, add 2.25g of urea to dissolve, then add 6mL of formaldehyde and stir evenly, and finally add 0.2mL of hydrochloric acid. Stand until the solution reacts to form a cloudy white state, continue to react for ten minutes and separate by suction filtration, wash with a small amount of deionized water and ethanol three times respectively to obtain a urea-formaldehyde resin precipitate. The separated urea-formaldehyde resin microspheres were dried at room temperature for 5 hours, and then dried in an oven at 70° C. for 24 hours to obtain urea-formaldehyde resin microspheres such as figure 2 Shown, wherein the addition of melamine is 1%.

Embodiment 2

[0024] Add 0.225g of melamine into a 100mL beaker containing 40mL of distilled water, add 2.25g of urea to dissolve, then add 6mL of formaldehyde and stir evenly, and finally add 0.2mL of hydrochloric acid. Stand until the solution reacts to form a cloudy white state, continue to react for ten minutes and separate by suction filtration, wash with a small amount of deionized water and ethanol three times respectively to obtain a urea-formaldehyde resin precipitate. The separated urea-formaldehyde resin microspheres were dried at room temperature for 5 hours, and then dried in an oven at 70° C. for 24 hours to obtain urea-formaldehyde resin microspheres.

Embodiment 3

[0026] Add 0.675g of melamine into a 100mL beaker containing 40mL of distilled water, add 2.25g of urea to dissolve, then add 6mL of formaldehyde and stir evenly, and finally add 0.2mL of hydrochloric acid. Stand until the solution reacts to form a cloudy white state, continue to react for ten minutes and separate by suction filtration, wash with a small amount of deionized water and ethanol three times respectively to obtain a urea-formaldehyde resin precipitate. The separated urea-formaldehyde resin microspheres were dried at room temperature for 5 hours, and then dried in an oven at 70° C. for 24 hours to obtain urea-formaldehyde resin microspheres such as image 3 Shown, wherein the addition of melamine is 30%.

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Abstract

The invention relates to a method for synthesizing a melamine urea formaldehyde resin microsphere, and belongs to synthesis of macromolecule multifunctional microspheres. The melamine urea formaldehyde resin microsphere is prepared by utilizing melamine modified urea formaldehyde resin microsphere, the melamine urea formaldehyde resin microsphere is even in granularity, and the particle diameter of the melamine urea formaldehyde resin microsphere is distributed between 3 microns to 5 microns. The method can be used in the aspects of chromatographic packing materials, catalyst carriers, bonding agents, super-capacitor materials and absorption metal materials and the like, and is a good formwork for preparing inorganic microspheres. Melamine in different qualities is adopted to be modified and synthesized to the melamine urea formaldehyde resin microsphere which is even in distribution and monodisperse.

Description

technical field [0001] The invention relates to a method for synthesizing a polymer microsphere, in particular to a method for synthesizing a melamine urea-formaldehyde resin microsphere. Background technique [0002] In recent years, the research on organic polymer microspheres has been paid more attention because of its wide application. The main functions are micro-memory, micro-reactor, micro-separator and micro-structural unit. It involves almost all fields such as controlled release of drugs, adsorption of metal particles in environmental pollution water treatment, supercapacitor materials and chromatographic packing, etc. However, the most common melamine urea-formaldehyde resin has been neglected, and the adhesive is only synthesized under alkaline conditions, and the reaction under acidic conditions is rarely studied. The present invention is to synthesize uniform and dispersed melamine urea-formaldehyde resin microspheres under acidic conditions. [0003] US Pat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G12/38C08J3/12C08L61/30
Inventor 郝志显程艺艺王淑珍王乐乐郭玉清
Owner TONGJI UNIV
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