CN201489846U

CN201489846U - Conductive elastomer

Info

Publication number: CN201489846U
Application number: CN2009201859750U
Authority: CN
Inventors: 王岩; 陈先锋
Original assignee: LONG YOUNG ELECTRONICS (KUNSHAN) CO Ltd
Current assignee: LONG YOUNG ELECTRONICS (KUNSHAN) CO Ltd
Priority date: 2009-07-21
Filing date: 2009-07-21
Publication date: 2010-05-26
Anticipated expiration: 2019-07-21

Abstract

The utility model discloses a conductive elastomer, which comprises an elastomer body, wherein a plurality of up-and-down through holes are arranged on the elastomer body; a conductive metal layer is plated on the whole outer surface of the elastomer body; the outer surface of the elastomer body comprises an upper surface, a lower surface and a hole inner wall surface of the through holes; therefore, the elastomer body can breakover electric charges horizontally and vertically, thereby greatly improving the shielding effectiveness of the product. The conductive elastomer is formed by plating the conductive metal on the elastomer body, and the conductivity can be directly given to the elastomer body, therefore, the formed elastic compression ratio of the conductive elastomer is high; the conductive elastomer can be made to be thinner, so as to be easy to become small size by die cutting; the conductive elastomer can be applied to the small and light electronic products such as an ultra-thin mobile phone.

Description

A kind of conductive elastomer

Technical field

The utility model relates to a kind of conductive elastomer.

Background technology

When the EMC Design of product, select for use the technical scheme of suitable shielding material to obtain the authentication of product electromagnetic compatibility, be a kind of way that gets twice the result with half the effort, become the current technical scheme of industry.Under all multi-constraint conditions such as cost, efficient even product design requirement, a large amount of conductive shield materials are used in the middle of the consumer electronics.Wherein typical with conducting foam, this conducting foam is formed by conductive fabric parcel polyurethane foam, the electromagnetic wave that conductive fabric produces when being used for shielding circuit working in the electrical equipment on the one hand, also can reduce of the influence of external electromagnetic ripple on the other hand to electrical equipment work itself, and the static that electrical equipment can be produced produces too much static to external world's derivation and pre-anti-electricity device, in order to obtain shield effectiveness preferably, conducting foam need compress use usually, and this just requires to select for use the polyurethane foam of certain density and elasticity ratio.In the electronic product compact outline, slimming, functional diversities, integrated today, the electronic shield material conducting foam that product inside will be used also will adapt to this trend, promptly to satisfy miniaturization, lightness, at this moment, existing conductive fabric foam just is restricted, as being subject to processing the restriction of size, therefore existing conducting foam is difficult for being processed into thin thickness and satisfies elastic compression than the product that requires by the conductive fabric parcel.

Summary of the invention

The purpose of this utility model be to provide a kind of have favorable conductive shielding properties and elastic compression than and be easy to be die-cut to the conductive elastomer of thin thickness.

In order to reach above purpose, the technical solution adopted in the utility model is: a kind of conductive elastomer, comprise the elastic body, offer a plurality of lower through-holes of going up on the described elastic body, all be coated with conductive metal layer on described elastic body's the whole outer surface, described elastic body's outer surface comprises the hole internal face of upper and lower surface and described a plurality of through holes.

Be pasted with the conduction adhesive-bonded fabric by electroconductive binder at least one surperficial conductive metal layer in described elastic body's the upper and lower surface.

Described conductive metal layer comprises three layers, is followed successively by nickel dam, copper layer, nickel dam on described elastic body's outer surface.

Described elastic body is the polyolefin foamed cotton.

Described electroconductive binder is conduction acrylic glue.

Because the utility model has adopted above technical scheme; its advantage is: this conductive elastomer plates conducting metal and forms on the elastic body; by directly giving elastic body itself its conductivity; then the conductive elastomer elastic compression that forms is than high; can accomplish thinner thickness; be easy to be die-cut to small size; this conductive elastomer can be applied to little and light electronic product; on ultra thin handset; on the inner surface of elastic body's upper and lower surface and through hole hole wall, all plate conducting metal; thereby make conductive elastomer in surface and vertical direction; can conduct electricity; then this conductive elastomer has good shielding properties; use this conductive elastomer on protected components and parts the time; be easy to the static of protected components and parts surface sediment is conducted to outside the shielding case, can not cause damage, play good shielding protection effect the contact components and parts.

Description of drawings

Accompanying drawing 1 is a cross-sectional schematic of the present utility model.

Embodiment

Further set forth concrete structure of the present utility model below in conjunction with accompanying drawing.

A kind of conductive elastomer, comprise elastic body 1, this elastic body 1 can select the polyolefin foam for use, offer a plurality of lower through-holes 2 of going up on the elastic body 1, all be coated with conductive metal layer 3 on elastic body 1 the whole outer surface, elastic body 1 outer surface comprises upper and lower surface 7 and 4 and the hole internal face 5 of a plurality of through hole 2, in Fig. 1, elastic body 1 is the polyolefin foamed cotton, and conductive metal layer 3 comprises three layers, is followed successively by nickel dam 31, copper layer 32, nickel dam 31 on elastic body 1 outer surface.When this conductive elastomer of processing, utilize mechanical means at the fine through hole 2 of elastic body's 1 upper punch One's name is legion earlier, to have a plurality of elastic bodies 1 that go up lower through-hole 2 then and place the electroless plating groove, configuration can strengthen the reinforcing agent of melts combine degree, as urethane, claim urethanes again, urethane can be used for strengthening conducting metal and elastic body's 1 conjugation, electroplates layer of metal nickel 31 on elastic body 1 whole outer surface earlier, dry, the spray reinforcing agent, re-plating layer of copper 32 is dried, spray reinforcing agent again, re-plating layer of metal nickel 31, after drying, coating electroconductive binder 8 on the nickel dam 31 of elastic body's 1 lower surface 4, acrylic glue as conduction, above the adhesive-bonded fabric 6 that will conduct electricity is fitted in, after the pressurization cooling, form conductive elastomer.Brought infringement for the tear resistance of product owing in manufacturing process, use mechanical means punching, make elastic body 1 in use be torn easily, the one deck of then on elastic body 1 outer surface, fitting again conduction adhesive-bonded fabric 6, thus the conductive elastomer of tear-proof formed with the tear resistance that strengthens product integral body.

The utility model product is compared as shown in the table with the performance of common conducting foam on the market:

This conductive elastomer plates conducting metal and forms on elastic body 1; specifically; on the inner surface of elastic body 1 upper and lower surface and through hole hole wall, all plate conducting metal; thereby make conductive elastomer in surface and vertical direction; can conduct electricity; then this conductive elastomer has good shielding properties; and by directly giving elastic body itself its conductivity; then elastic body 1 adds the conductive elastomer elastic compression ratio height that the coat of metal forms; can accomplish thinner thickness; be easy to be die-cut to small size; in actual the use; difference according to designing requirement; this conductive elastomer can be made into different shapes; be suitable for being applied in the electronic product of light and thin type; as ultra thin handset; the online notebook; palmtop computer product etc.; the utility model after the processing is placed or is fixed on the way of gum the parts place of needs shielding; effectively electromagnetic wave shielding is to the interference of parts; the electrostatic charge that also the parts periphery can be piled up exports to the casing outside simultaneously, has protected the serviceability of miscellaneous part effectively.

In the present embodiment, with the polyolefin foamed cotton is the elastic body, at polyolefin foam upper punch minute aperture, give its conductivity with the electro-plating method of no electrolysis then, make the hole inwall also be electroplated and go up conducting metal, there is electroplated conductive layer on the surface of polyolefin foamed cotton after electroplating, and also there is one deck electroplated conductive layer the inside of polyolefin elastomer hole wall, can conduct electricity thereby form surface and vertical direction, the shielding properties of product gets a promotion.Polyolefin elastomer is with respect to polyurethane foam good springiness, light weight, and moulding is fine, also is easy to processing, meets design requirement fully.Simultaneously product has also used chemical reagent to promote metal and elastic body's conjugation, has guaranteed the quality stability of product, makes the chemically-resistant of the utility model conductive elastomer and resistance to elevated temperatures get a promotion.Have elastomeric one side that level and vertical direction all conduct electricity one deck conduction adhesive-bonded fabric of having fitted again, promoting the performance of the tear-proof of product.

Claims

1. conductive elastomer, comprise the elastic body, it is characterized in that: offer a plurality of lower through-holes of going up on the described elastic body, all be coated with conductive metal layer on described elastic body's the whole outer surface, described elastic body's outer surface comprises the hole internal face of upper and lower surface and described a plurality of through holes.

2. a kind of conductive elastomer according to claim 1 is characterized in that: be pasted with the conduction adhesive-bonded fabric by electroconductive binder at least one surperficial conductive metal layer in described elastic body's the upper and lower surface.

3. a kind of conductive elastomer according to claim 1 is characterized in that: described conductive metal layer comprises three layers, is followed successively by nickel dam, copper layer, nickel dam on described elastic body's outer surface.

4. a kind of conductive elastomer according to claim 1 is characterized in that: described elastic body is the polyolefin foamed cotton.

5. a kind of conductive elastomer according to claim 2 is characterized in that: described electroconductive binder is conduction acrylic glue.