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Composite hollow microsphere and preparation method and application thereof

A technology of hollow microspheres and hollow glass microspheres, which is applied in the direction of microsphere preparation, microcapsule preparation, chemical instruments and methods, etc., and can solve the problem of weak core-shell adhesion of composite hollow microspheres, which is difficult to meet the requirements of industrialization, and preparation methods Problems such as complex process, to achieve the effect of low crushing rate, low cost and simple process

Active Publication Date: 2014-03-26
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, patents CN02112272.5 and CN201010250770.3 all adopt the sedimentation and covering method to prepare zeolite / mullite composite hollow microspheres and ferric oxide / polyaniline composite hollow microspheres, but the composite hollow microspheres prepared by this method adhere to the core-shell Weak, low strength
Patents CN200910048261.X and CN200910032145.9 both use organic surface polymerization to prepare styrene / silicon dioxide composite hollow microspheres and chitosan / silicon dioxide composite hollow microspheres, but the preparation method is complex and unfavorable for large-scale production. Difficult to meet the requirements of industrialization

Method used

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  • Composite hollow microsphere and preparation method and application thereof
  • Composite hollow microsphere and preparation method and application thereof
  • Composite hollow microsphere and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0043] (1) Add 200g of water-soluble phenolic resin and 200g of water into the container, and start mechanical stirring to completely dissolve the water-soluble phenolic resin to obtain a uniformly dispersed slurry. The liquid phase viscosity of the slurry is 7.9mPa.s. The weight ratio is 1:1;

[0044] (2) Add 1000g of hollow glass microspheres to the above slurry at a stirring speed of 1200 rpm, and continue stirring for 16 hours to serve as the slurry; the weight ratio of phenolic resin to hollow glass microspheres in the slurry is 1 :5.

[0045] (3) Start the spray dryer, set the inlet temperature parameter to 250°C, the outlet temperature parameter to 120°C, and the frequency of the main frequency to 50Hz, so that the temperature field of the equipment is stable and uniform, and the airflow is stable; the rate of the volume pump is adjusted to 10ml / min , the slurry in step (2) is evenly sprayed under the working chamber, and the phenolic resin slurry is dried and coated o...

Embodiment 2

[0047] (1) Add 200g of water-soluble phenolic resin and 2000g of water into the container, and start mechanical stirring to completely dissolve the water-soluble phenolic resin to obtain a uniformly dispersed slurry; the liquid phase viscosity of the slurry is 3.4mPa.s, and the water-soluble phenolic resin and water The weight ratio is 1:10;

[0048] (2) Add 40g of hollow glass microspheres to the above slurry at a stirring speed of 1200 rpm, and continue to stir the suspension for 16 hours as a slurry; the weight ratio of phenolic resin to hollow glass microspheres in the slurry is 5 :1.

[0049] (3) Start the spray dryer, set the inlet temperature parameter to 270°C, the outlet temperature parameter to 160°C, and the frequency of the main frequency to 50Hz, so that the temperature field of the equipment is constant and uniform, and the airflow is stable; the rate of the volume pump is adjusted to 30ml / min , the slurry in step (2) is evenly sprayed under the working chamber,...

Embodiment 3

[0051] (1) Add 200g of water-soluble phenolic resin and 2000g of water into the container, and start mechanical stirring to completely dissolve the water-soluble phenolic resin to obtain a uniformly dispersed slurry; the liquid phase viscosity of the slurry is 3.4mPa.s, and the water-soluble phenolic resin and water The weight ratio is 1:10;

[0052] (2) Add 100g of hollow glass microspheres to the above slurry at a stirring speed of 1200 rpm, and continue to stir for 16 hours to serve as the slurry; the weight ratio of phenolic resin to hollow glass microspheres in the slurry is 2 :1.

[0053] (3) Start the spray dryer, set the inlet temperature parameter to 290°C, the outlet temperature parameter to 175°C, and the frequency of the main frequency to 50Hz, so that the temperature field of the equipment is constant and uniform, and the airflow is stable; the rate of the volume pump is adjusted to 60ml / min , the slurry in step (2) is evenly sprayed under the working chamber, an...

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Abstract

The invention provides a composite hollow microsphere and a preparation method and application thereof. The composite hollow microsphere comprises an inner core and a housing, wherein the inner core is a hollow glass bead; the housing is phenolic resin, and the particle size range is 15-100 microns; the average weight ratio of the phenolic resin to the hollow glass bead is (0.14-3.5):1. The composite hollow microsphere is prepared by the following steps: forming uniform slurry by dissolving water-soluble phenolic resin in water; fully mixing the slurry with the hollow glass bead to evenly disperse, and then carrying out spray drying, so as to obtain the composite hollow microsphere. The composite hollow microsphere disclosed by the invention is tiny in particle, and controllable in grain size; the hollow microsphere also has certain toughness and deformability when high-temperature resistance and compressive capacity are met, is low in breakage rate under a dynamic grinding environment, simple in preparation, short in time and easy to industrialize, meets wider operating requirements, and can be well applied to the fields such as oil drilling liquid, cosmetics, coatings and the like.

Description

technical field [0001] The invention relates to the field of composite processing of organic and inorganic materials, and furthermore, relates to a novel composite hollow microsphere and its preparation method and application. Background technique [0002] Hollow microsphere materials have unique chemical and physical properties due to their special hollow structure. In recent years, they have attracted more and more attention and become a research hotspot in the field of materials. So far, inorganic materials, polymer materials, metal oxide materials and semiconductor materials (gallium oxide, gallium nitride), etc. have been tried to be prepared into hollow microsphere materials by researchers at home and abroad. These materials show corresponding Different special features for solid materials. These hollow microsphere materials with special characteristics are expected to be used in microreactors, drug delivery, controlled release, photocatalysis, enzyme coating, photoni...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08K7/28B01J13/02C09K8/03
Inventor 石秉忠范俊梅陈铖赵素丽林永学袁方利
Owner CHINA PETROLEUM & CHEM CORP
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