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Surface chemical plating treatment process for hollow glass microsphere, plated metal hollow glass microsphere and application thereof

A technology of hollow glass microspheres and surface chemistry, which is applied to the surface chemical plating process of hollow glass microspheres and the field of metal-coated hollow glass microspheres, which can solve problems such as cumbersome process, toxic use, and environmental pollution, and reduce environmental pollution , cost reduction effect

Active Publication Date: 2013-05-01
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of conventional hollow glass microsphere surface electroless plating treatment process which is cumbersome, uses toxic and expensive reagents, pollutes the environment, and causes damage to hollow glass microspheres, and provides a hollow glass microsphere surface electroless plating treatment process , this process greatly simplifies the traditional cumbersome pretreatment process steps of cleaning, roughening, activation, and sensitization, avoids the use of expensive and toxic reagents, reduces production costs, reduces environmental pollution, and avoids hot lye The damage of hollow glass microspheres caused by heating and soaking for too long during the activation treatment can more effectively play a role in surface hydroxylation than the hot lye activation method

Method used

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  • Surface chemical plating treatment process for hollow glass microsphere, plated metal hollow glass microsphere and application thereof
  • Surface chemical plating treatment process for hollow glass microsphere, plated metal hollow glass microsphere and application thereof
  • Surface chemical plating treatment process for hollow glass microsphere, plated metal hollow glass microsphere and application thereof

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Experimental program
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Effect test

Embodiment 1

[0051] The first step, cleaning: Weigh 2.0g of hollow glass microspheres and put them into NaOH solution with a concentration of 28g / L, stir and wash them at room temperature for 15 minutes, then filter, and wash the hollow glass microspheres with deionized water to the filtrate is neutral;

[0052] The second step, activation: prepare hydrogen peroxide alkaline solution, measure 10mL hydrogen peroxide solution (containing H 2 o 2 30%) and 10mL ammonia water (mass fraction 25.0% ~ 28.0%, with NH 3 meter), add 200 mL of deionized water to dilute. This hydrogen peroxide alkaline solution contains H 2 o 2 1.5%, with NH 3 1.1%; the hollow glass microspheres treated in the first step are added therein, heated to 82° C., and continuously stirred, and the treatment time is 30 minutes to obtain activated hollow glass microspheres;

[0053] The third step, preparation of plating solution and reducing solution:

[0054] Plating solution: weigh 2.2g AgNO 3 , dissolved in 400 mL ...

Embodiment 2

[0061] The first step, cleaning: Weigh 2.0g of hollow glass microspheres and put them into a NaOH solution with a concentration of 41g / L, stir and wash at room temperature for 15 minutes, then filter, and wash the hollow glass microspheres with deionized water to the filtrate is neutral;

[0062] The second step, activation: prepare hydrogen peroxide alkaline solution, measure 10mL hydrogen peroxide solution (containing H 2 o 2 30%) and 10mL ammonia water (mass fraction 25.0% ~ 28.0%, with NH 3 meter), add 200 mL of deionized water to dilute. This hydrogen peroxide alkaline solution contains H 2 o 2 1.5%, with NH 3 1.1%; the hollow glass microspheres treated in the first step are added therein, heated to 87° C., and continuously stirred for 20 minutes to obtain activated hollow glass microspheres;

[0063] The third step, preparation of plating solution and reducing solution:

[0064] Plating solution: weigh 1.3g AgNO 3 , dissolved in 400 mL of deionized water to prep...

Embodiment 3

[0071] The first step, cleaning: Weigh 2.0g of hollow glass microspheres and put them into a NaOH solution with a concentration of 15.5g / L, stir and wash them at room temperature for 20 minutes, then filter, and wash the hollow glass microspheres with deionized water until they are filtered out liquid is neutral;

[0072] The second step, activation: prepare hydrogen peroxide acidic solution, measure 10mL hydrogen peroxide solution (containing H 2 o 2 30%) and 10 mL of concentrated hydrochloric acid (mass fraction 36% to 38%), add 200 mL of deionized water to dilute. This hydrogen peroxide acidic solution contains H 2 o 2 1.5%, containing 2.0% HCl; add the hollow glass microspheres treated in the first step, heat to 77°C, and keep stirring for 20 minutes to obtain activated hollow glass microspheres;

[0073] The third step, preparation of plating solution and reducing solution:

[0074] Plating solution: weigh 0.7g AgNO 3 , dissolved in 400 mL of deionized water to prep...

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Abstract

The invention relates to the technical field of a composite material with a core shell structure and provides a surface chemical plating treatment process for hollow glass microspheres. The surface chemical plating treatment process comprises the following steps: carrying out alkaline wash and hydrogen peroxide wash before plating to coarsen and hydroxylate the surface of the hollow glass microsphere; and carrying out chemical plating on the processed hollow glass microsphere to obtain a metal-plated hollow glass microsphere. In the method, complex preprocessing technology, such as sensitization, activation and the like in the existing method, can be simplified, and the use of expensive stannous chloride and palladium chloride which are not environmentally-friendly is avoided. Compared with the existing hot alkaline liquor processing method, the process provided by the invention has the advantages that possible microsphere fracture caused by the long-time soaking in the alkaline liquor can be avoided, and the surface hydroxylation efficiency of the hollow glass microsphere can be greatly increased by using hydrogen peroxide. The hollow glass microsphere processed with the method is easy to plate. The obtained metal-plated hollow glass microsphere has the advantages of a complete metal layer, light weight, good electrical conductivity and the like. When the obtained metal-plated hollow glass is used as a filler, material density can be lowered, cost is lowered, mechanical property is enhanced, and the plated metal hollow glass microsphere is applied to the aspects of staticelectricity coating, electromagnetic wave interference coating, wave adsorption coating and the like.

Description

technical field [0001] The invention relates to the technical field of core-shell structure composite materials, in particular to a surface electroless plating treatment process of hollow glass microspheres, metal-plated hollow glass microspheres and applications thereof. Background technique [0002] Metallic conductive fillers have excellent electrical conductivity and are currently the most commonly used fillers in electromagnetic shielding materials and conductive coatings. However, they have the disadvantages of high density, poor dispersion, and easy sedimentation, which affect the storage and use of electromagnetic shielding materials and conductive coatings. . If a cheap and light core material is used, one or several layers of conductive substances (such as silver, nickel, copper, etc.) with good chemical stability, strong corrosion resistance and high conductivity are coated on the surface, which can reduce the cost. , and can reduce the specific gravity of the ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/10
Inventor 张敬杰谢虓安振国严开祺杨岩峰
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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