Communication Cable Filling Compound
HAFC-80-A communication cable filling compound is specifically designed for filling of oil-filled communication cables.
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
Color stability @ 130°C / 120hrs
Density @ 20°C (g/ml)
Drop point (°C)
ASTM D 566-93
Flash Point COC - °C
ASTM D 92
Cone penetration @ 25°C (dmm)
ASTM D 217
Oil Separation ﹪
IEC 811-5.1 clause5
OIT @ 190°C (min)
Relative permittivity@ 50Hz, 25°C
Dissipation Factor, 1MHz
<1.0 x 10-3
Volume Resistivity @ 20°C (ohms.cm)
Kinematic Viscosity at 120°C - cst
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.
HAFC-80-A communication cable filling compound is designed for hot filling.
30% deposit ,70% balance should be paid before shipment.
20’GP : witnin 7 working days after receiving the deposit.
40’GP : within 10 working days after receiving the deposit.
About communication 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.