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Composite conducting strip

A composite conductive and sheet technology, applied in the direction of circuits, electric switches, electrical components, etc., can solve the problems of inconvenient selection and manufacture, easy powder falling off, unbalanced conductivity, etc. Good performance and high composite strength

Inactive Publication Date: 2013-08-14
NANTONG MEMTECH ELECTRONIC INDUSTRY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing conductive rubber is made by mixing metal powder or carbon black with rubber. Because the metal powder or carbon black is in a chaotic state, the powder is easy to fall off, the conductive performance is uneven, the conductive effect is not good, and the sensitivity of the key trigger is not high. , which is not conducive to the application of products in the high-end market
[0003] The patent application No. 200920057627.5 discloses a kind of ultra-thin conductive particles for buttons, which uses metal conductive mesh instead of traditional metal powder. The metal conductive mesh is not specified as any metal, and the size of the metal conductive mesh and metal contacts is unknown. It is not easy to select and manufacture; and there is no auxiliary agent such as coupling agent in the rubber matrix or the metal conductive mesh is not properly pretreated, and the bonding strength between the metal conductive mesh and the rubber matrix is ​​not high

Method used

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  • Composite conducting strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Select the silicone rubber raw material of the polymer matrix 1, the crosslinking agent of the silicone rubber, and one or several additives in the flame retardant, anti-aging agent, toughening agent, antioxidant, and water-repellent agent, and use nickel foil as the lower layer metal foil3. The thickness of the nickel foil is 10 μm. The nickel foil contains a plurality of protruding contacts 5 with a distance of 0.2 mm and a height H8 of 100 μm. The nickel foil also contains holes with a diameter D7 of 0.1 mm. For a plurality of holes 4 with a hole spacing W6 of ˜2 mm and a hole spacing W6 of 0.2 mm˜2.5 mm, the diameter D7 of some holes may be different, and the size of the hole spacing W6 of some holes may be different. Combine the raw materials of silicone rubber, crosslinking agent, various additives and nickel foil on a suitable machine and mold, and the raw materials of silicone rubber, crosslinking agent and additives are cured into the polymer matrix of silicone...

Embodiment 2

[0019] Select the raw materials of the rubber and plastic materials for the polymer matrix 1, the crosslinking agent for the rubber and plastic materials, and one or several additives among flame retardants, anti-aging agents, toughening agents, antioxidants, and water-repellent agents. The braided mesh of copper wires is used as the upper layer metal foil 2 and the lower layer metal foil 3 . The surface of the braided mesh of copper wire is uneven, the thickness of the braided mesh of copper wire is 1 mm, and the braided mesh of copper wire contains a plurality of protruding contacts with a distance of 2 mm and a height H8 of 5 mm. Point 5 includes a plurality of holes 4 with a hole diameter D7 ranging from 0.1mm to 2mm and a hole spacing W6 ranging from 0.2mm to 2.5mm. The size of the hole diameter D7 can be different, and the size of the hole spacing W6 can be different. Combine the raw materials of rubber and plastic materials, cross-linking agents, auxiliary agents and tw...

Embodiment 3

[0023] Choose one or several kinds of thermoplastic raw materials for manufacturing polymer matrix 1 and thermoplastic flame retardants, anti-aging agents, toughening agents, antioxidants, and water-repellent agents, and use gold-plated stainless steel foil as the lower layer metal foil3. The thickness of the gold-plated stainless steel foil is 0.5 mm. The gold-plated stainless steel foil contains a plurality of protruding contacts 5 with a distance of 2 mm and a height H8 of 0.8 mm. It also contains a hole with an aperture D7 of For a plurality of holes 4 of 0.1 mm to 2 mm and a hole spacing W6 of 0.2 mm to 2.5 mm, the size of the hole diameter D7 can be different, and the size of the hole spacing W6 can be different. The thermoplastic raw material and the gold-plated stainless steel foil are combined on a suitable machine and mold, the thermoplastic raw material is solidified into a thermoplastic polymer matrix 1, and the upper metal foil 2 of the gold-plated stainless steel...

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Abstract

The invention provides a composite conducting strip which comprises a high-polymer matrix and one or two or more than two layers of communicated metal foils composited therein; and the total thickness of the composite conducting strip is 0.3-3mm. The surfaces of the metal foils are uneven and have protruding contacts which are exposed to one surface of the high-polymer matrix. The high-polymer matrix includes silicon rubber, nitrile rubber, ethylene propylene rubber, natural rubber, rubber and plastic materials, thermoplastic plastics, thermosetting plastics, fiber reinforced plastics and thelike and can contain 0.1-5% of coupling agent and other auxiliaries. The metal foils are nickel foils, copper foils, aluminum foils, stainless steel foils, gold foils, silver foils with holes or meshgrids. The composite conducting strip has the advantages of being high in composite strength, good in corrosion resistance and good in current conduction performance, can be divided into random shapes and specifications and can be widely used for manufacturing the conductive base materials of various buttons in an electronic industry.

Description

technical field [0001] The invention relates to a conductive material under the keys of a mobile phone and the like, in particular to a composite conductive sheet. Background technique [0002] Traditional keypads such as mobile phones and computers are composed of keycaps and conductive rubber. The conductive rubber is used to contact the circuit board to conduct or separate and disconnect the circuit. The existing conductive rubber is made by mixing metal powder or carbon black with rubber. Because the metal powder or carbon black is in a chaotic state, the powder is easy to fall off, the conductive performance is uneven, the conductive effect is not good, and the sensitivity of the key trigger is not high. , It is not conducive to the application of products in the high-end market. [0003] The patent application No. 200920057627.5 discloses a kind of ultra-thin conductive particles for buttons, which uses metal conductive mesh instead of traditional metal powder. The me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H1/04H01H13/02B32B15/04
Inventor 韩辉升张劲松张红梅董亚东刘小平顾建祥
Owner NANTONG MEMTECH ELECTRONIC INDUSTRY CO LTD
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