Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Rubber conductive particle and preparation method thereof

A technology of conductive particles and rubber, which is applied in the field of electrical conductors, can solve problems such as high cost, high failure rate, and complex structure, and achieve the effects of less pollutants, firm combination, and wide application

Active Publication Date: 2012-08-01
NANTONG MEMTECH TECH
View PDF7 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its structure is complicated, the cost is high, and the failure rate is high

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
  • Rubber conductive particle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The polyurethane rubber substrate 3 sheet is prepared by molding, and the upper surface 2 of the rubber substrate is cleaned with argon plasma in a coating machine, and then, the rubber substrate of this sheet is coated by vacuum sputtering. One layer of 316 stainless steel metal coating with a thickness of 5 μm is sputtered on the upper surface 2 of the material. This polyurethane sheet deposited with one layer of stainless steel metal coating was punched out into small cylindrical particles with a diameter of 3 mm. The surface conductive small particles are used as the conductive contact element of the circuit board of the substrate, and the lower surface 4 of the rubber substrate is compounded with the silicone rubber printed with numbers, so that the keys on the mobile phone can be prepared. The preparation cost of such conductive particles is relatively low.

Embodiment 2

[0033] The butyl rubber substrate 3 sheet is obtained by extrusion molding, and the butyl rubber substrate 3 contains pigments, fillers, antiaging agents, toughening agents, plasticizers, antistatic agents, crosslinking agents or coupling agents. coupling agent; clean the rubber base material upper surface 2 of butyl rubber with corona treatment, and then first plate a copper film with a thickness of 10 μm on the rubber base material upper surface 2 by vacuum evaporation coating, and then A gold film with a thickness of 1 μm was plated by a vacuum ion plating process. This rubber substrate 3 sheet with two layers of metal coating 1 is cut into polygonal granules with a diameter of 6 mm. The surface conductive small particles are used as the conductive contact element of the circuit board of the substrate, and the lower surface 4 of the rubber substrate is compounded with the silicone rubber printed with numbers, so that the buttons on the cordless telephone can be prepared. T...

Embodiment 3

[0035] The silicone rubber substrate 3 sheet is prepared by calendering, and the silicone rubber substrate 3 contains pigments, fillers, antiaging agents, toughening agents, plasticizers, antistatic agents, crosslinking agents or coupling agents; The upper surface 2 of the rubber substrate has a strip-shaped geometric pattern, and the upper surface 2 of the silicone rubber substrate is treated by spraying a coupling agent. An aluminum film with a thickness of 0.05mm is plated on the top, and then a nickel film with a thickness of 0.01mm is plated with an electroless plating process. This rubber substrate 3 sheet with two layers of metal coating 1 is laser cut into small elliptical particles with a diameter of 10 mm. The surface conductive small particles are used as the conductive contact element of the circuit board of the substrate, and the lower surface 4 of the rubber substrate is compounded with the silicone rubber printed with letters, so that the keys of the computer ca...

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
Total thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a rubber conductive particle, comprising a rubber base material and metal plated film on the surface of the particle. The metal plated film can comprise one layer or a plurality of layers, and has a total thickness of 0.05mum to 1mm. The rubber conductive particle has a cylindrical shape or a platform shape, has a cross section of a circular shape, an elliptical shape, or a polygon shape, and has a cross section diameter of 1mm to 10mm. The preparation method of the rubber conductive particle comprises: first preparing a rubber sheet material with moulding, injecting, extruding, or calendering methods; then plating the metal plated film on the surface of the rubber sheet material by employing plating technique; and carrying out punching, shearing or laser cutting on the sheet material to obtain the rubber conductive particle. The rubber conductive particle of the invention is characterized by good conductivity of metal coating, thin thickness of the coating, reduction of raw material consumption, low manufacturing cost, and no pollution basically, and can be used as a conduction contact component of a push-button circuit board.

Description

technical field [0001] The invention relates to a conductor used in conjunction with keys, in particular to a rubber conductive particle coated with a conductive surface layer on a rubber substrate and a preparation method thereof. Background technique [0002] Keypad manufacturing industries such as mobile phones, telephones, and calculators need to prepare conductive rubber products for keypad substrates. One method is to compound the metal sheet and rubber and then punch it into small round particles. This method is not easy to obtain an extremely thin metal layer. products. [0003] Plating a metal film on the plastic surface to have a metallic luster is a common technical product. In the electroplating process of this method, not only waste liquid is generated, but also there are residual chemicals in the electroplating layer that are harmful to the stability of the electrical conductivity. substance. Metallized products on the rubber surface are relatively rare. [...

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
IPC IPC(8): H01H1/04H01H13/10H01H11/04B32B15/06
Inventor 韩辉升张劲松顾建祥管建华黄志宏黄诚
Owner NANTONG MEMTECH TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com