TY - JOUR
T1 - Relationships between processing parameters and the foaming performances of polyethylene for coaxial cable insulation
AU - Kim, Young Ho
AU - Jeon, Byung Joo
AU - Cha, Sung Woon
AU - Nam, Gi Joon
AU - Park, Chan Yong
AU - Lee, Gun Joo
N1 - Funding Information:
This work was financially supported by LS Cable Ltd., South Korea.
PY - 2008
Y1 - 2008
N2 - Coaxial cable is cable that transmits electrical energy and signal from the receiver devices to the antenna in the base station. Nowadays, as the telecommunication technology develops, demand for a high signal quality is required in the coaxial cable. In this cable, the electromagnetic signal passes through the insulation, which is usually composed of foamed high-density polyethylene (HDPE)/low-density polyethylene (LDPE) blend. To improve the dielectric properties of insulation and reduce the signal power loss (attenuation), it is necessary to increase the foaming rate of insulation. In this study, two types of foaming experiments were performed: batch type foaming and continuous extrusion foaming. The relationship between the foaming rate and the electrical properties of insulation was investigated in the batch type foaming process. Also, the effects of processing conditions, such as resin composition, die temperature, screw speed, and pressure drop rate of die on the foaming performances were studied in the continuous foaming extrusion for coaxial cable insulation.
AB - Coaxial cable is cable that transmits electrical energy and signal from the receiver devices to the antenna in the base station. Nowadays, as the telecommunication technology develops, demand for a high signal quality is required in the coaxial cable. In this cable, the electromagnetic signal passes through the insulation, which is usually composed of foamed high-density polyethylene (HDPE)/low-density polyethylene (LDPE) blend. To improve the dielectric properties of insulation and reduce the signal power loss (attenuation), it is necessary to increase the foaming rate of insulation. In this study, two types of foaming experiments were performed: batch type foaming and continuous extrusion foaming. The relationship between the foaming rate and the electrical properties of insulation was investigated in the batch type foaming process. Also, the effects of processing conditions, such as resin composition, die temperature, screw speed, and pressure drop rate of die on the foaming performances were studied in the continuous foaming extrusion for coaxial cable insulation.
KW - Batch foaming process
KW - Coaxial cable insulation
KW - Extrusion foaming process
KW - Foaming rate
KW - Polyethylene
UR - http://www.scopus.com/inward/record.url?scp=57249105369&partnerID=8YFLogxK
U2 - 10.1080/03602550802497925
DO - 10.1080/03602550802497925
M3 - Article
AN - SCOPUS:57249105369
SN - 0360-2559
VL - 47
SP - 1283
EP - 1288
JO - Polymer - Plastics Technology and Engineering
JF - Polymer - Plastics Technology and Engineering
IS - 12
ER -