Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of microcomposite preparation method of superfine casio3 conductive powder

A technology of conductive powder and ultra-fine powder, which is used in cable/conductor manufacturing, circuits, electrical components, etc., can solve the problems of poor conductivity of metal oxide powder, uneven mixing and dispersion of metal fibers, and orientation.

Active Publication Date: 2016-04-06
PETROCHINA CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the price of metal powder is relatively expensive, and it is easy to oxidize to reduce the conductivity; the metal fiber is unevenly mixed and dispersed, and it is easy to fold out and orientation during processing, so it is only used in occasions such as electromagnetic wave shielding that requires excellent conductivity; graphite needs to be added A large amount (30%) makes the product brittle; carbon fiber is expensive; metal oxide powder has poor electrical conductivity
The most practical application is carbon black. Although it can endow the material with excellent electrical conductivity, its single color and poor coloring property make it difficult to meet the requirements of different fields and users.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of microcomposite preparation method of superfine casio3 conductive powder
  • A kind of microcomposite preparation method of superfine casio3 conductive powder
  • A kind of microcomposite preparation method of superfine casio3 conductive powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Use ethanol as the reaction medium, keep the temperature at 50°C, weigh 100g of calcium nitrate and put it into a beaker of absolute ethanol, the concentration of calcium nitrate solution is 0.2mol L -1 , and the molar ratio of ethyl orthosilicate is 1:1. Mix the calcium nitrate-absolute ethanol solution with the tetraethyl orthosilicate-ethanol solution, stir thoroughly with a magnetic stirrer, and the stirring speed is 50r / min. Aqueous ammonia (5%) was added dropwise to adjust to pH=9. Add 2ml0.5mol·L at the same time -1 Silver nitrate solution, add 5% ammonia water drop by drop under shaking, and brown precipitate will appear in the solution at the beginning, continue to add ammonia water dropwise until the precipitate just dissolves, and a clear and transparent solution (pH≤11) is obtained. After the ammonia water and the mixed solution are fully mixed, stop stirring, and after standing still for 2 to 3 hours, make the solution change into a sol phase, and continu...

Embodiment 2

[0036] Use ethanol as the reaction medium, keep the temperature at 60°C, weigh 100g of calcium nitrate and put it into a beaker of absolute ethanol, the concentration of calcium nitrate solution is 0.2mol L -1 , and the molar ratio of methyl orthosilicate is 1:1. Mix the calcium nitrate-absolute ethanol solution with the methyl orthosilicate-ethanol solution, and stir thoroughly with a magnetic stirrer at a stirring speed of 40r / min. Ammonia water (6%) was added dropwise to adjust to pH=9. Add 2ml0.5mol·L at the same time -1 Silver nitrate solution, add 5% ammonia water drop by drop under shaking, and brown precipitate will appear in the solution at the beginning, continue to add ammonia water dropwise until the precipitate just dissolves, and a clear and transparent solution (pH≤11) is obtained. After the ammonia water and the mixed solution are fully mixed, stop stirring, and after standing still for 2 to 3 hours, make the solution change into a sol phase, and continue to ...

Embodiment 3

[0038] Use ethanol as the reaction medium, keep the temperature at 20°C, weigh 100g of calcium nitrate and put it into a beaker of absolute ethanol, the concentration of calcium nitrate solution is 0.2mol L -1 , and the molar ratio of propyl orthosilicate is 1:1. Mix calcium nitrate-absolute ethanol solution with propyl orthosilicate / methyl orthosilicate-ethanol solution, the molar ratio of propyl orthosilicate / methyl orthosilicate is 1:1, fully stir with a magnetic stirrer, The stirring speed is 50r / min. Aqueous ammonia (5%) was added dropwise to adjust to pH=9. Add 2ml1mol·L at the same time -1 Silver nitrate solution, add 10% ammonia water drop by drop under shaking, and brown precipitate will appear in the solution at the beginning, continue to add ammonia water dropwise until the precipitate just dissolves, and a clear and transparent solution (pH≤11) is obtained. After the ammonia water and the mixed solution are fully mixed, stop stirring, and after standing still fo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
electrical resistivityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing superfine CaSiO3 conductive powder in a micro-composite mode. The method comprises the steps that alcohol serves as a reaction medium, at the temperature ranging from 10 DEG C to 100 DEG C, soluble calcium salt and orthosilicate ester are added according to the mole ratio of 1:1 so that CaSiO3 superfine powder can be prepared; the use amount of the alcohol is 1 to 10 times that of the soluble calcium salt according the mole ratio; ammonium hydroxide with the mass percent concentration smaller than or equal to 10% is gradually dripped in a silver nitrate solution with the concentration smaller than or equal to 6mol / L, so that a clear and transparent silver ammonia solution is obtained; at the temperature ranging from 10 DEG C to 100 DEG C, a mixed solution is prepared through the silver ammonia solution and an aldehyde solution according to the volume ratio of 1:1 and the CaSiO3 conductive powder is prepared through the mixed solution and the CaSiO3 superfine powder according to the mole ratio of 1:1. The conductive powder is even in particle diameter, small in volume resistivity and good in conductive performance; the technology process is simple and easy to control, pollution does not exist, the product quality is stable, purity is high and cost is low; the conductive powder can be used in conductive filler, conductive adhesives and conductive auxiliaries.

Description

Technical field: [0001] The invention relates to an ultrafine (≤50μm) CaSiO 3 Micro-composite preparation method of conductive powder, superfine CaSiO 3 Conductive powder has high whiteness, good conductivity, high heat resistance and weather resistance, and is mainly used in electronic technology, plastics, metallurgy, building materials, environmental protection, etc. Background technique: [0002] CaSiO 3 (Wollastonite) is a new type of mineral raw material developed and utilized in recent years, mainly used in plastics, rubber, polymers, coatings, ceramics, metallurgy, building materials, environmental protection and as a substitute for asbestos. With the development of powder technology and modification technology, CaSiO 3 The application field of powder is constantly expanding. After being metallized by electroless plating, inorganic powder has good electrical conductivity, and has broad application prospects in the fields of electromagnetic shielding, antistatic, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00C01B33/24C23C18/44
Inventor 杨国兴黄庆东王登飞郭峰邹恩广高宇新邱丽萍赵兴龙吕红丽李瑞国海峰孙彬彬肖波郝志军赵贵乔王刚王斯晗姜进宪马建英刘丽君杜威刘冬梅
Owner PETROCHINA CO LTD