Preparation method of nano-silicon dioxide composite material

A technology of nano-silica and composite materials, applied in the field of preparation of nano-silica composite materials, which can solve the problems of large surface energy, influence on dispersion, and easy agglomeration, etc., and achieve easy operation, simple process, and great promotion and application value Effect

Inactive Publication Date: 2018-02-27
SHAANXI SHENGMAI PETROLEUM
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the size of nanoparticles is small, the surface energy is large, and it is easy to agglomerate, which affects its dispersion in polymers.

Method used

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Examples

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Embodiment Construction

[0012] A method for preparing a nano-silica composite material, characterized in that it comprises the steps of:

[0013] (1) Add 15g RNS-A and 15mL methyl acrylate to a 250mL flask, use 100mL methanol as a solvent, and stir the reaction with magnetic force. After the reaction is completed, wash with methanol and filter, and dry to obtain half-generation SiO 2 Anchored PAMAM-type dendrimers;

[0014] (2) Add 10g half-generation SiO to a 250mL flask 2 and 10mL of ethylenediamine, using 100mL of methanol as a solvent, magnetic stirring reaction, synthesis of SiO 2 Anchored PAMAM-type dendrimers;

[0015] (3) Lauryl lactam, dendritic SiO 2 , water and phosphoric acid mixed into the polymerization kettle, with CO 2 Replace the air in the kettle, raise the temperature and pressurize for 2 hours, then slowly release the air to normal pressure within 1.5 hours, react at 270°C under normal pressure for 1.5 hours, discharge the material after charging, and pelletize the material a...

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Abstract

The invention discloses a method for preparing a nano silicon dioxide composite material, which belongs to the field of material preparation. It is characterized in that it comprises the following steps: adding RNS-A and methyl acrylate in a flask, using methanol as a solvent, washing with methanol after magnetic stirring reaction and filtering, and obtaining half-generation SiO2 dendrimers after drying; in the flask Add half-generation SiO2 and ethylenediamine, and use methanol as a solvent for magnetic stirring reaction to synthesize SiO2 dendrimers; mix laurolactam, dendritic SiO2, water and phosphoric acid into the polymerization kettle, and replace the air in the kettle with carbon dioxide. Raise the temperature and increase the pressure, then react and pressurize under normal pressure, and then discharge the material. After the material is cooled by water, it is cut into pellets to obtain a nano-SiO2 composite material. Through the improvement of the original preparation process, the amine-type dendritic macromolecule is prepared by repeating the Michael addition reaction of amine groups and methyl acrylate. The preparation method of the nano-silica composite material described in this method is simple and easy. operation, has great promotion and application value.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a method for preparing a nano-silica composite material. Background technique [0002] With the continuous development of science and technology, new material technology has also been popularized and applied in a large range, among which nanotechnology has been applied to many fields such as aerospace, household appliances, and clothing. Due to the small size effect, quantum effect, interface effect and quantum tunnel effect, nanomaterials have many novel characteristics. However, nanoparticles have small particle size and large surface energy, so they are prone to agglomeration, which affects their dispersion in polymers. Contents of the invention [0003] The present invention aims to solve the above problems, and provides a method for preparing a nano-silica composite material. [0004] A method for preparing a nano-silica composite material, characterized i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/16C08K9/04C08K3/36
CPCC08G69/16C08K3/36C08K9/04C08K2201/011
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM
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