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Communication Cable Filling Compound

Communication Cable Filling Compound

Communication Cable Filling Compound Application HAFC-80-A communication cable filling compound is specifically designed for filling of oil-filled communication cables. Feature It has excellent water resistance and electrical performance.It is a kind of hot melt complex with water resistance. It...
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Communication Cable Filling Compound

 

Application

HAFC-80-A communication cable filling compound is specifically designed for filling of oil-filled communication cables.

 

Feature

It has excellent water resistance and electrical performance.It is a kind of hot melt complex with water resistance. It shows extremely small shrinkage and excellent stability at high temperature. It is soft and adhesion.

 

Main Technical Parameters

Parameter

Typical Value

Test Method

Appearance

White

Visual inspection

Color stability @ 130°C / 120hrs

<2.5

ASTM D127

Density @ 20°C (g/ml)

0.86±0.01

ASTM D1475

Drop point (°C)

≧90

ASTM D 566-93

Flash Point COC - °C

>230

ASTM D 92

Cone penetration @ 25°C (dmm)

70±20

ASTM D 217

Oil Separation ﹪

Zero

IEC 811-5.1 clause5

OIT @ 190°C (min)

>10

ASTM D3895

Relative permittivity@ 50Hz, 25°C

≦2.3

GB1409

Dissipation Factor, 1MHz

<1.0 x 10-3

GB1409

Volume Resistivity @ 20°C (ohms.cm)

>1.0x1012

GB1410

Oxidation resistance

≥2000ppm


Kinematic Viscosity at 120°C -    cst

100±20

ASTM D445

 

Compatibility

HAFC-80-A communication cable filling compound is  well compatible with high polymer material,steel and aluminum . But we recommend that the  compatibility test should be made before polymer materials are in contact with this compound.

 

Manufacturability

HAFC-80-A communication cable filling compound is designed for hot filling.

 

Other                                                 

1.Payment :TT/LC

30% deposit ,70% balance should be paid before shipment.

2.Delivery date

20’GP : witnin 7 working days after receiving the deposit.

40’GP : within 10 working days after receiving the deposit.

 

About communication cable

image002.jpg


Coaxial cable

A communication circuit (coaxial pairs) is formed by two mutually insulated concentric inner and outer conductors, and is formed by one or more coaxial pairs. Coaxial cables are mostly used as trunk lines for long-distance communication, and they provide multi-carrier communications or television programs, and are also used for efficient data transmission.

The coaxial two conductors are completely concentric and there is no electromagnetic field outside the outer conductor (Figure 4). Therefore, the attenuation of transmission signals and the mutual interference between coaxial pairs are small, and the performance against external interference is also higher than that of symmetrical cables. Its transmission frequency can reach 10 ~ 100 MHz or more. The model of the coaxial communication cable is divided according to the size of the coaxial pair, there are micro coaxial cable inner conductor diameter n/ outer conductor diameter D is 0.6mm/2mm, 0.9mm/3.2mm, etc.), small coaxial cable (n/D =1.2mm/4.4mm, etc.), medium coaxial cable (n/D = 2.6mm/9.5mm, etc.), large coaxial cable (n/D = 5mm/18mm, 11mm/41mm, etc.).

The inner conductor of the coaxial pair in the coaxial communication cable is copper, and the section is cylindrical and solid. In order to increase the mechanical strength (for example, when used as a submarine cable), there are also bimetal inner conductors using a steel core copper outer layer. Outer conductors are generally made of copper tape. Commonly used forms include corrugated, indented, and lock-type. The outer conductor needs good flexibility, high stability and simple processing technology. The insulation of the coaxial inner and outer conductors should have a low dielectric constant and a low dielectric loss, and should also have a certain mechanical strength to support the outer conductor so that it is concentric with the inner conductor. In order to eliminate inconsistencies between coaxial pairs and interference between coaxial pairs


The development of communication cables:

In 1850, across the English Channel, connecting the United Kingdom and France, laying a single heart submarine cable cable.

In 1858, cable telegraphed across the Atlantic was laid.

In 1876, the telephone was invented. Several pairs of copper cables have emerged.

In 1900, Americans invented cable plus technology. Communication cables are developed in both directions: multi-logarithmic city cables and long-distance logarithmic long-distance cables.

In 1918, carrier telephones appeared.

In 1941, the United States opened 480 coaxial cables. Later it developed to more than 10,000 roads.

Then introduce the development history of the new China communication cable:

In 1949, China developed its own paper insulated lead sheath in the city.

In 1957, 37 sets of the following star-twisted low-frequency long-distance symmetrical cables and 7 sets of high-frequency long-distance symmetrical cables were produced.

In 1963, four sets of polystyrene string insulated lead sheath cables capable of transmitting 120 carrier waves were prototyped.

In 1974, eight integrated coaxial cables were developed.


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    Add: A Building,No.114 Xiangxi Xinwei, Songyuanxia Community, Guanlan Street, Longhua New District, Shenzhen
    Tel: +86-755-23779082
    Fax:+86-755-23063739
    Mob:+86-18928450189
    E-mail: sales@gl-polygel.com
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