High temperature durable, oxidation resistant and lead nickel free conductor pulp and preparing method thereof

An anti-oxidation, nickel conductor technology, used in cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, conductive coatings, etc., can solve the problem of difficult to meet the high reliability and stability requirements of conductor paste The composition and preparation of conductor paste, the harm of acute toxicity to the environment and the human body, etc., achieve good high-temperature oxidation resistance, low production cost, and improve the effect of oxidation resistance.

Inactive Publication Date: 2008-10-22
HUAZHONG UNIV OF SCI & TECH
View PDF5 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In Japanese Patent 5-121204, in order to improve the heat resistance and oxidation resistance of the Ni electrode, 2-15% (atomic ratio) of Pt or Pd is introduced into the inner electrode slurry, resulting in an increase in product cost
Chinese patent document 02145520.1 (CN1188544C) discloses a production method of a high-temperature-resistant and anti-oxidation base silver-coated nickel powder composition, which uses a chemical method to make the surface of Ni fine powder directly be formed by the affinity of Ag molecules in the liquid to form a protective film, thereby Protect it from being oxidized at high temperature, the patent document does not involve the composition and preparation of conductive paste
However, due to the high toxicity of lead and its compounds, which cause great harm to the environment and human body, many countries in the world have successively issued many relevant laws and regulations to restrict and prohibit lead-containing products in recent years.
The use of lead-containing glass powder to make conductive paste can no longer meet people's requirements for environmental protection. It is necessary to realize the lead-free transformation of conductive paste and ensure its original functions under the premise of meeting ecological, environmental protection and green manufacturing. reproduction of
The current lead-free glass powder has a high softening temperature, which makes it difficult to meet the high reliability and stability requirements of conductive paste

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) 13% B by weight 2 o 3 , 2% SiO 2 , 75% Bi 2 o 3 , 3% ZnO, 5% V 2 o 5 and 2% Li 2 O Mix the raw materials of each component evenly, where Li 2 O is introduced in the form of carbonate, and other components are introduced in the form of respective oxides. Heating to 1200°C for high-temperature melting, quenching, ball milling, filtering, and drying to obtain lead-free glass powder;

[0037] (2) 70% terpineol, 10% turpentine, 10% ethyl cellulose, 5% dibutyl phthalate, 2% tetraethyl silicate and 3% benzyl silicone oil are mixed by weight percentage, Heating to 120°C completely dissolves to obtain an organic carrier;

[0038] (3) Weigh 70kg of nickel powder, 1kg of boron powder, 5kg of lead-free glass powder and 24kg of organic carrier, mix and stir well, and fully grind until the particle size is 10 μm and the viscosity is 70Pa·s, which is the finished product.

[0039] When the obtained slurry is sintered under atmospheric conditions, the anti-oxidation tempe...

Embodiment 2

[0041] (1) 18% B by weight 2 o 3 , 3% SiO 2 , 75% Bi 2 o 3 , 1%TiO 2 , 1% V 2 o 5 and 2% Li 2 O Mix the raw materials of each component evenly, where Li 2 O is introduced in the form of carbonate, and other components are introduced in the form of respective oxides. Heating to 1100°C for high-temperature melting, quenching, ball milling, filtering, and drying to obtain lead-free glass powder;

[0042] (2) Mix 85% diethylene glycol butyl ether, 10% polyvinyl butyral, 2% tetraethyl silicate and 3% benzyl silicone oil by weight percentage, and heat to 100°C to dissolve them all to obtain organic carrier;

[0043] (3) Weigh 70kg of nickel powder, 3kg of boron powder, 1kg of chromium powder, 11kg of lead-free glass powder and 15kg of organic carrier, mix and stir, fully grind until the particle size is 15 μm and the viscosity is 75Pa·s, which is the finished product.

[0044] When the obtained slurry is sintered under atmospheric conditions, the anti-oxidation temperature ...

Embodiment 3

[0046] (1) 10% B by weight 2 o 3 , 10% SiO 2 , 70% Bi 2 o 3 , 4% CaO, 2% ZnO, 1% P 2 o 5 , 1% Li 2 O, 1% Na 2 O and 1%K 2 O Mix the raw materials of each component evenly, among which CaO, Li 2 O, Na 2 O and K 2 O is introduced in the form of carbonate, and other components are introduced in the form of respective oxides. Heating to 1180°C for high-temperature melting, quenching, ball milling, filtering, and drying to obtain lead-free glass powder;

[0047] (2) By weight percentage, 65% terpineol, 15% carboxymethyl cellulose, 5% polyvinyl acetate, 6% dibutyl phthalate, 3% tetraethyl silicate and 6% benzyl Mix base silicone oil and heat to 120°C to completely dissolve to obtain an organic vehicle;

[0048] (3) Weigh 60kg of nickel powder, 1kg of boron powder, 2kg of chromium powder, 1kg of yttrium powder, 10kg of lead-free glass powder and 26kg of organic carrier, mix and stir well, and fully grind until the particle size is 12 μm and the viscosity is 65Pa·s, which...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
softening pointaaaaaaaaaa
Login to view more

Abstract

The invention discloses high temperature-resisting antioxidative leadless nickel conductor slurry. The compositions in percentage by weight of the slurry are: 50 to 70 percent of nickel powder, 1 to 5 percent of antioxidative protective agent, 5 to 15 percent of inorganic agglomerant and 15 to 30 percent of organic carrier. The compositions are evenly mixed and ground to obtain leadless nickel conductor slurry product with granularity less than 15mu m and viscosity of between 65 and 75 Pa.s, wherein the nickel powder is selected from spherical nickel powder with the mean diameter of between 0.1 and 2.0 mu m; the antioxidative protective agent is selected from one sort or more than one sort of B, Cr and Y which are spherical micropowder with the mean diameter less than 1mu m; and the inorganic agglomerant is leadless glass powder. The slurry product has excellent high temperature-resisting antioxidative performance and is suitable for sintering under atmospheric condition with the antioxidative temperature adjusted between 800 and 900 DEG C. Moreover, the slurry has simple preparation process, low production cost and energy conservation and is propitious to environmental protection.

Description

technical field [0001] The invention belongs to the technical field of electronic components and materials, and in particular relates to a high-temperature and anti-oxidation lead-free nickel conductor slurry, which is suitable for use as an electrode material for electronic ceramic components. Background technique [0002] In recent years, the development of electronic equipment and surface assembly technology has been very rapid, and higher requirements have been put forward for electronic ceramic components in terms of miniaturization, high performance, low cost, and environmental protection. Electronic ceramic technology is moving toward multilayer, electrode Development in the direction of base metallization and lead-free. [0003] Conductive paste is widely used in the manufacture of electrodes for electronic ceramic components. It is generally composed of three parts: conductive phase, inorganic binder and organic carrier. Through the coordination and matching of the ...

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 Applications(China)
IPC IPC(8): H01B1/22H01B13/00C09D5/24
Inventor 周东祥龚树萍刘欢傅邱云胡云香郑志平赵俊
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap