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Modified superfine zinc oxide and its prepn

A zinc oxide and modification technology, applied in the direction of zinc oxide/zinc hydroxide, fibrous fillers, etc., can solve the problems of large specific surface area and surface energy, hindering the performance of ultrafine powder, and small particle size of ultrafine powder. , to achieve the effect of good dispersion, strong functionality and good performance

Inactive Publication Date: 2003-02-26
骆天荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small particle size of ultrafine powder, the specific surface area and surface energy are very large, it is easy to agglomerate during use, and the existence of agglomeration will greatly hinder the full performance of ultrafine powder. Therefore, research on ultrafine powder The dispersion and stability of the body will be the premise and basis for further improving the performance of the material

Method used

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  • Modified superfine zinc oxide and its prepn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] ①Preparation method of modified nanoscale and submicron ultrafine zinc oxide:

[0021] In this example, the modified ultrafine zinc oxide is prepared by a wet method: with C 16-18 Ammonium stearate, or alkylbenzene sulfonate, or alkyl ether phosphate, or alcohol ether carboxylate, and prepare them to 0.1mol / L, or 0.5mol / L, or 0.8mol / L , or the modifier of 1mol / L, the zinc-ammonia complex solution in the ammonia distillation equipment is added into the modified solvent, and its content is 0.5%, or 5%, or 15%, or 20% (weight) of the zinc oxide content %) of ammonium stearate, or alkyl benzene sulfonate, or alkyl ether phosphate, or alcohol ether carboxylate, add a modified solvent and start stirring, heating up, when the temperature rises to 80-90 ° C Ammonia distillation at constant temperature, when the content of ammonia is less than 5% (percentage by weight), the ammonia distillation is completed, and after precipitation, impurity removal, purification, drying and ca...

Embodiment 2

[0025] ①Preparation method of modified nanoscale and submicron ultrafine zinc oxide:

[0026] In this example, the modified ultrafine zinc oxide is prepared by a wet method: polyethylene glycol (M=400) or fatty alcohol polyoxyethylene ether is dissolved in a certain amount of deionized water to prepare 0.2mol / L, or 0.5 mol / L, 0.7mol / L added solution. Take by weighing the polyethylene glycol solution of 2%, or 4%, or 10%, or 18% (percentage by weight) relative to the zinc oxide content in the zinc ammonia complex solution, or the fatty alcohol polyoxyethylene ether solution is added to In the zinc-ammonia complex solution in the ammonia distillation equipment, the rest of the preparation steps are the same as in Example 1 to obtain the modified ultrafine zinc oxide powder.

[0027] ②Modified nanoscale and submicron ultrafine zinc oxide:

[0028] Add polyethylene glycol or aliphatic alcohol polyoxyethylene ether with non-ionic surface modification solvent to modify ultrafine z...

Embodiment 3

[0030] ①Preparation method of modified nanoscale and submicron ultrafine zinc oxide:

[0031] In this example, the modified ultrafine zinc oxide is prepared by a wet method: water-soluble titanate, or silane, or aluminate ester coupling agent is dissolved in a certain amount of ionized water, and the preparation ratio is by weight: titanate ( or silane, or aluminate): water = 1:10 (or 1:1, or 1:5, or 1:20), prepared into a certain concentration of titanate (or silane, or aluminate) water solvent . Get 0.1%, or 2%, or 6%, or 10%, or 20% (percentage by weight) of titanate, or silane, or aluminate ester solvent relative to the content of zinc oxide in the zinc-ammonia complex solution, add into the zinc-ammonia complex solution in the ammonia distillation equipment, and the rest of the preparation steps are the same as in Example 1 to obtain the modified ultrafine zinc oxide powder.

[0032] ②Modified nanoscale and submicron ultrafine zinc oxide:

[0033] Water-soluble titanat...

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Abstract

The present invention belongs to the field of nanometer material producing technology. Modified nanometer and subnanometer class superfine zinc oxide powder is produced with zinc oxide in the ammonia distillation process through adding surface modifier, or superdispersing polymer, or amphoteric structure coupling agent or other modifying solvent, and using the proper modifying process specification and method. The present invention utilizes the space steric effect to control the particles size and obtain the modified superfine zinc oxide with high dispersivity and powerful functions. The modified superfine zinc oxide powder may be used widely in rubber, ceramic, textile and daily-use chemical industries.

Description

1. Technical field [0001] Nanoscale and submicron-scale modified ultrafine zinc oxide and its preparation method disclosed by the present invention belong to the technical field of nanomaterial production, and its technical gist is to use some modified solvents to modify ultrafine zinc oxide to obtain High-performance, highly dispersed modified ultra-fine zinc oxide, and also introduced the preparation method of this modified ultra-fine zinc oxide. 2. Background technology [0002] Ultrafine zinc oxide powder refers to the powder with a particle size of less than 1 μm, which can be widely used in industries such as rubber, ceramics, textiles, and daily chemicals. As the particle size decreases, the specific surface area gradually increases, gradually showing the active effect that conventional powders do not have, especially when the particle size is less than 100nm, that is, when nanoparticles are formed, due to the quantum size effect, surface effect and small size Effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02C04B35/453C04B35/632C08K3/22C09C1/04
Inventor 骆天荣赵永红郭建平乔爱平蒋素萍
Owner 骆天荣
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