Composite conducting microball and its preparing method

A composite conductive and microsphere technology, applied in the direction of microsphere preparation, microcapsule preparation, etc., can solve the problems of poor conductivity, poor conductivity, and low cost of metal oxides, and achieve simple and easy preparation process and good perception ability , can be designed strong effect

Inactive Publication Date: 2007-03-28
YANTAI SHUODE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphite and carbon black in carbon materials have low cost, low relative density, good dispersion, but poor conductivity, and are only used for shielding and anti-static products
Gold (Au), silver (Ag), copper (Cu), aluminum (Al), nickel (Ni) and other metal powders have low resistivity, among which gold powder has excellent electrical conductivity and chemical stability, and is the most ideal conductive particle. But expensive, mainly used in military and aerospace
Silver powder has excellent electrical conductivity and chemical stability. It oxidizes very slowly in the air. Even if it is oxidized, the oxide produced still has a certain electrical conductivity. It is widely used in electrical devices that require high electrical reliability, but the price is high. , high relative density, easy to precipitate, electromigration phenomenon in humid environment
Copper, aluminum, and nickel are cheap and have good conductivity, but when the temperature rises, they are easily oxidized in the air, making the conductivity worse, and the use temperature is limited, so they are only used for products that do not require high stability and reliability.
Metal oxides have poor electrical conductivity
[0003] Conductive polymers also have disadvantages such as low conductivity, high cost, complicated preparation process, and difficulty in secondary processing and molding, so the overall performance of the material is not ideal.

Method used

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  • Composite conducting microball and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Preparation of nickel-phosphorus alloy polymer conductive microspheres

[0018] Weigh 3.0g of polymer microspheres and add water to fully ultrasonically disperse them evenly, then soak them in alkaline solution, wash them with acid solution, and then thoroughly wash them with pure water to make a 10% aqueous solution, put them into a 1L three-necked flask, and heat to 60 ℃, add 100m10.1% PdCl2 aqueous solution 200 / rpm and stir for 20 minutes, then filter with suction and wash with pure water until the effluent is clean.

[0019] Disperse the above-washed polymer microspheres with 200ml of pure water and add them to a 1L three-necked flask, heat to 60°C, add 100ml, 1.0% sodium hypophosphite aqueous solution under stirring at 200 rpm, react for 15 minutes, and then Suction filter and wash with water.

[0020] Fully disperse the above polymer microspheres activated with palladium into the following chemical plating solution, put them into a 10L reactor, and rea...

Embodiment 2

[0030] Example 2: Preparation of nickel-boron alloy polymer conductive microspheres

[0031] Weigh 3.0g of polymer microspheres and add water to fully ultrasonically disperse them evenly, then soak them in lye, wash them with acid solution, wash them thoroughly with pure water, and make a 10% aqueous solution, put them into a 1L three-necked flask, and heat to 60 ℃, add 100m, 10.1% colloidal palladium solution, stir and react at 200 / rpm for 20 minutes, and then wash with pure water until clean.

[0032] Disperse the above-washed polymer microspheres with 200ml of pure water and add them to a 1L three-neck flask, heat to 60°C, add 100ml of dilute HCl (1:9) solution under stirring at 200 rpm and stir for 1 minute, then Suction filter and wash with pure water.

[0033] Fully disperse the above polymer microspheres activated with palladium into the following electroless nickel plating solution, put them into a 10L reactor, and react for 30-120 minutes under stirring at 300 rpm, t...

Embodiment 3

[0043] Example 3: Preparation of gold-coated polymer conductive microspheres

[0044] Weigh 3.0g of polymer microspheres and add water to fully ultrasonically disperse them evenly, then soak them in lye, wash them thoroughly with pure water, and make a 10% aqueous solution, put them into a 1L three-necked flask, heat to 60°C, and add 100ml , 0.1% PdCl2 aqueous solution, stirred and reacted at 200 rpm for 20 minutes, then suction filtered and washed with pure water until the effluent was clean.

[0045] Disperse the above-washed polymer microspheres with 200ml of pure water and add them to a 1L three-necked flask, heat to 60°C, add 100ml of 1.0% sodium hypophosphite aqueous solution to react for 15 minutes while stirring at 200 rpm, and then pump Filter and wash with water.

[0046] Fully disperse the above polymer microspheres activated with palladium into the following chemical deposition gold plating solution, put them into a 10L reactor, stir and react at 300 rpm for 30-12...

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Abstract

The invention relates to a new type composite conductive micro-balloon and the manufacturing method that is made up of high polymer micro-balloon core material and external conductive metal carcass material that is achieved by chemical coating method. It has the advantages of strong designability, good conductivity and wonderful sensitivity to temperature and pressure, and it is simple technology and low cost.

Description

technical field [0001] The invention relates to a composite conductive microsphere and a preparation method thereof, belonging to a new type of conductive polymer composite material and a preparation method thereof. Background technique [0002] In recent years, there have been many studies on conductive materials, generally including carbon, metals, metal oxides, conductive polymers, and some composite materials. Graphite and carbon black in carbon materials are low in cost, low in relative density, good in dispersion, but poor in conductivity, and are only used in shielding and antistatic products. Gold (Au), silver (Ag), copper (Cu), aluminum (Al), nickel (Ni) and other metal powders have low resistivity, among which gold powder has excellent electrical conductivity and chemical stability, and is the most ideal conductive particle. But the price is expensive, mainly used in military and aerospace. Silver powder has excellent electrical conductivity and chemical stabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/20C23C18/31B01J13/22
Inventor 周小平吴阳李兴存纪克兵豆帆朱洪维
Owner YANTAI SHUODE NEW MATERIAL
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