Method for making light tye composite hollow metal microball

A hollow metal microsphere, light-weight technology, applied in metal material coating process, liquid chemical plating, coating, etc., can solve the problems of iron being easily oxidized, metal micropowder, cobalt and nickel are expensive, etc., to achieve The effect of function matching and reducing specific gravity

Inactive Publication Date: 2002-01-30
SOUTHEAST UNIV
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  • Abstract
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Problems solved by technology

However, the specificity of metal fine powder is large, iron is easily oxidized in the air, cobalt and nickel are more expensive; although the recently popular nano metal powder has excellent performance, there are still many practical problems in mass production, storage and stability.

Method used

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Examples

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Embodiment Construction

[0014] Take the preparation of hollow nickel metal microspheres as an example: (1) screen the hollow ceramic balls with the required particle size according to the needs; binding site; (3) carry out sensitization treatment with stannous chloride colloid again, then put into colloidal palladium activation solution and activate treatment, obtain the active initiation layer of one layer of evenly distributed palladium on the ceramic ball surface; (4) place The activated hollow ceramic balls are evenly dispersed in the electroless nickel plating solution through electromagnetic stirring and dispersion, and are coated with electroless plating under corresponding process conditions to obtain light nickel metal microspheres with hollow ceramic balls as the core template; (5) By adjusting the specific process parameters of electroless plating such as the addition of plating time, plating solution concentration, hollow ceramic balls, etc., the thickness of the metal clad layer is also d...

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Abstract

The preparation method of a new-type functional material-light compound hollow metal microsphere, belonging to the field of electromagnetic wave absorbing material manufacture technology, includes the following steps: 1. screening out hollow ceramic microsphere with required grain size; 2. making a series of surface treatment to make said microsphere possess excellent metal binding site; 3. making sensitization treatment and making activating treatment to make surface of said ceramic microsphere obtain a layer of uniformly-distributed active initiating layer; 4. making the hollow ceramic microspheres which are treated by means of activation uniformly disperse in chemical plating solution under the condition of electromagnetic stirring, and making chemical plating so as to obtain the invented light compound hollow metal microsphere using hollow ceramic microsphere as core template.

Description

1. Technical field [0001] The invention is a novel method for preparing functional materials, which belongs to the technical field of manufacturing electromagnetic wave absorbing materials. 2. Background technology [0002] With the rapid development of the telecommunications industry, there has been an unprecedented increase in the number and types of electromagnetic equipment used for national defense and personal, industrial and commercial purposes. Electromagnetic radiation has become a major pollution source that cannot be ignored today. Electromagnetic radiation acts on the nervous system of the human body, affects metabolism and brain currents, causes changes in human behavior and related organs, and further affects the human body's circulatory system, immunity, reproductive and metabolic functions, and even induces cancer. The interference of electromagnetic radiation to equipment causes the interruption of electric wave transmission, and the malfunction of computer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/88C23C18/18C23C18/32
Inventor 顾宁徐丽娜周凯常徐鸿飞沈浩瀛
Owner SOUTHEAST UNIV
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