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Equipment and method for preparing tetrapod-like zinc oxide whiskers by using modified montmorillonite catalyst

A four-needle zinc oxide and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, single crystal growth, etc., can solve the problem that T-ZnOw is difficult to achieve large-scale production, product purity and quality cannot be effectively guaranteed, Low whisker conversion rate and other problems, to achieve the effect of reducing labor burden, good whisker growth, and uniform whisker size

Pending Publication Date: 2021-05-28
四川祺又飞新材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The preparation methods of the above-mentioned T-ZnOw are all difficult to realize large-scale production, and the purity and quality of the product cannot be effectively guaranteed
In addition, the four-needle zinc oxide whiskers produced by Panasonic Corporation of Japan and Southwest Jiaotong University all have the disadvantages of low whisker conversion rate and low direct yield, which lead to an increase in the cost of the produced product

Method used

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  • Equipment and method for preparing tetrapod-like zinc oxide whiskers by using modified montmorillonite catalyst
  • Equipment and method for preparing tetrapod-like zinc oxide whiskers by using modified montmorillonite catalyst
  • Equipment and method for preparing tetrapod-like zinc oxide whiskers by using modified montmorillonite catalyst

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Effect test

Embodiment 1

[0061] The present invention adopts modified montmorillonite as a catalyst to prepare tetraacicular zinc oxide whiskers, comprising the following steps:

[0062] S1: Put the modified montmorillonite catalyst into the catalyst bin from the catalyst bin mouth, preheat 500°C-1100°C, wherein the mass fraction of montmorillonite is 90.5%;

[0063] S2: Zinc particles are put into the raw material bin, and heated by a heater to make it equal to the temperature of the catalyst bin, and the purity of the zinc particles is 99%;

[0064] S3: The catalyst enters the raw material material bin through the connection hole on the isolation plate in the form of steam, and the zinc vapor is combined in the upper layer of the material bin;

[0065] S4: Use the intelligent frequency conversion system to control the rotation speed of the stirring blade to 5-15 rpm to fully mix the catalyst vapor and zinc vapor, and accelerate the growth of zinc oxide crystals through positive charge ion exchange. ...

Embodiment 2

[0075] The difference between embodiment 2 and embodiment 1 is only that the mass fraction of montmorillonite in the modified smectite catalyst is 78%, and the rest of the steps are the same as in embodiment 1.

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Abstract

The invention discloses equipment and a method for preparing tetrapod-like zinc oxide whiskers by using a modified montmorillonite catalyst. The equipment comprises a reaction furnace, air pressure adjusting equipment, a recovery device, a stirring device and a control system, the air pressure adjusting equipment, the recovery device and the stirring device are respectively connected with the reaction furnace, the control system is connected with the air pressure adjusting equipment, and a reactor with an inverted triangular section is arranged in the reaction furnace; and the reactor comprises a partition plate horizontally arranged in the middle of the reactor, the reactor is divided into a raw material bin and a catalyst bin from top to bottom by the partition plate, a plurality of through connecting holes are formed in the partition plate, independent heaters are arranged in the catalyst bin and the raw material bin, and the heaters are electrically connected with a control system. The tetrapod-like zinc oxide whiskers prepared by the technical scheme of the invention have the advantages of high needle forming rate, good whisker growth, uniform and regular tetrapod-like whisker, and uniform whisker size; furnace pressure and stock bin pressure are intelligently controlled; and the production cost is low.

Description

technical field [0001] The invention relates to the technical field of preparing tetraacicular zinc oxide whiskers, in particular to a device and method for preparing tetraacicular zinc oxide whiskers with a modified montmorillonite catalyst. Background technique [0002] Tetraacicular zinc oxide whisker (T-ZnOw) is a self-activated direct wide bandgap inorganic semiconductor material with lead-zinc ore structure. The core, four needle-like crystals extending from the core radial direction, each needle-like body is a single crystal microfiber, is the only whisker with a three-dimensional structure among all whiskers so far, because of its unique three-dimensional four-needle three-dimensional structure, it is easy to achieve uniform distribution in the matrix material, thereby improving the physical properties of the material isotropically, and at the same time endowing the material with a variety of unique functional properties. It has excellent properties unmatched by ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/16C30B29/62C30B25/00B01J21/16
CPCC30B29/16C30B29/62C30B25/005B01J21/16
Inventor 戴祺又祝云飞吴怡
Owner 四川祺又飞新材料科技有限责任公司
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