CN103247368A

CN103247368A - Foaming wire material

Info

Publication number: CN103247368A
Application number: CN2012100243288A
Authority: CN
Inventors: 陈钧
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2012-02-03
Filing date: 2012-02-03
Publication date: 2013-08-14

Abstract

The invention discloses a foaming wire material (1), which comprises a conductor (2), a fiber layer (3) and an outer protective covering (4), wherein the conductor is coated with the fiber layer (3); the fiber layer is coated with the outer protective covering (4); the fiber layer is composed of a plurality of strands of fiber (31, 31'); and a plurality of gaps (32, 32') are arranged in the fiber layer.

Description

The foaming wire rod

[technical field]

The present invention relates to a kind of foaming wire rod, refer to a kind of its interior equally distributed fiber foam wire rod of bubble especially.

[background technology]

Traditional wire rod foam process comprises physical blowing and chemical blowing, no matter be that physical blowing or chemical blowing physical blowing are to utilize in the plastics extrusion directly injecting gas or liquid gas to realize that the foamed insulation chemical blowing is to adopt chemical reaction to produce gas, reduces dielectric constant with this.The manufacture method of physical blowing is to adopt the gas that does not produce loss neat with foaming, so eliminated the drawback of chemical foaming agent, the residue or the moisture content that namely do not have the generation of chemical blowing method in the insulation, the dielectric loss of insulation is descended significantly, physical blowing can be eliminated many processes restrictions of chemical blowing, and it is small to be easy to make abscess, the premium insulation of uniform in foaming, particularly can make foaming up to 80% insulation, and the foam degrees of chemical blowing insulation only about 40%.Therefore physical blowing is than chemical blowing foam degrees height, and dielectric constant is littler.

Final physical blowing or the chemical blowing selected, principle is to see the product that is manufactured with what performance requirement, such as the general data cable satisfies the foam degrees demand substantially with chemical blowing.Chemical blowing foam degrees theory is the highest by 50%, and physical blowing can be up to 80%, and dielectric loss is smaller certainly.It is relatively good that physical blowing is used in the wire rod of general high-frequency transmission, and the uniform in foaming loss is little relatively.

But the continuous lifting along with signal transmission rate in the cable, be 10Gbps as present development trend for the right transmission rate of each signal transmission, 20Gbps and 40Gbps, traditional physical foaming technology or chemical foaming technology all can't satisfy its corresponding high frequency performance requirement.

Be with, need a kind of new foaming wire rod overcome the deficiencies in the prior art.

[summary of the invention]

The object of the present invention is to provide the low and stable foaming wire rod of a kind of constant that economizes on electricity.

To achieve these goals, the present invention adopts following technical scheme: a kind of foaming wire rod, it comprises: conductor, be coated on the outer fibrage of conductor and be coated on the outer outer jacket of fibrage, described fibrage is fibrous by some strands, has some spaces in the described fibrage.

Compared with prior art, the foam advantage of wire rod of the present invention is: because the space in the foaming wire rod fibrage is many, size basically identical and being evenly distributed, so the dielectric constant of the wire rod that foams is little and stable, make the signal transmission rate height of foaming wire rod, satisfied the requirement of industry to foaming wire rod high frequency performance.

[description of drawings]

Fig. 1 is the foam cutaway view of wire rod first execution mode of the present invention.

Fig. 2 is the foam cutaway view of wire rod second execution mode of the present invention.

Fig. 3 is the schematic diagram of fiber shape in the foaming wire rod shown in Fig. 1 or Fig. 2.

Fig. 4 is the schematic diagram of fiber shape in the foaming wire rod shown in Fig. 1 or Fig. 2.

[embodiment]

See also Fig. 1 and in conjunction with Fig. 3 and Fig. 4, the foam structure of wire rod 1 first execution mode of the present invention comprises conductor 2, fibrage 3 and outer jacket 4 from inside to outside.Conductor 2 is used for transmitting high-frequency signal.Fibrage 3 is coated on outside the conductor 2, and fibrage 3 can be formed by 31 braidings of some strands of fibers.In addition, fibrage 3 also can by some strands of fibers 31 be arranged in parallel and heat merge into an organic whole.Between adjacent two strands of fibers 31 space 32 is arranged, therefore have several spaces 32 in the whole fibrage 3, space 32 also can be called as bubble.Above-mentioned bubble 32 quantity are many and be uniformly distributed in the fibrage 3.Per share fiber 31 is provided with the some fibers that are held together 33, and the shape of fiber 33 can be helical form or linearity.

See also Fig. 2, the foam structure of wire rod 1 ' second execution mode of the present invention also comprises conductor 2 ', fibrage 3 ' and outer jacket 4 ' from inside to outside.Conductor 2 ' also is used for transmitting high-frequency signal.Fibrage 3 ' is coated on outside the conductor 2 ', and fibrage 3 ' can be formed by the 31 ' braiding of some strands of fibers.In addition, fibrage 3 ' also can by some strands of fibers 31 ' be arranged in parallel and heat merge into an organic whole.Between adjacent two strands of fibers 31 ' space 32 ' is arranged, therefore have several spaces 32 ' in the whole fibrage 3 ', space 32 ' also can be called as bubble.Per share fiber 31 ' is hollow form, namely in the per share fiber 31 ' space 32 ' is arranged also.Above-mentioned bubble 32 ' quantity is many and be uniformly distributed in the fibrage 3 '.In addition, per share fiber 31 ' is also formed by some fiber 33 bindings, and the shape of fiber 33 can be helical form or linearity.

Because the space in the foaming wire rod fibrage is many, big or small basically identical and being evenly distributed, the dielectric constant of the wire rod that therefore foams is little and stable, makes the signal transmission rate height of foaming wire rod, has satisfied industry to the requirement of foaming wire rod high frequency performance.

Claims

1. foaming wire rod, it comprises: conductor, be coated on the outer fibrage of conductor and be coated on the outer outer jacket of fibrage, it is characterized in that: described fibrage is fibrous by some strands, has some spaces in the described fibrage.

2. foaming wire rod as claimed in claim 1, it is characterized in that: described fibrage is formed by some bursts of fibrages.

3. foaming wire rod as claimed in claim 1 is characterized in that: described fibrage is arranged in parallel by some strands of fibres and heat is merged into an organic whole.

4. foaming wire rod as claimed in claim 1 is characterized in that: between described adjacent two strands of fibers the space is arranged.

5. foaming wire rod as claimed in claim 2, it is characterized in that: described per share fiber is fibrous by some.

6. foaming wire rod as claimed in claim 1, it is characterized in that: described per share fiber is hollow form.

7. foaming wire rod as claimed in claim 1, it is characterized in that: described per share fiber is fibrous by some.

8. foaming wire rod as claimed in claim 1, it is characterized in that: described some spaces are uniformly distributed in the fibrage.