物理发泡FEP的挤出工艺  

Extrusion Process of Physically Foamed FEP

作　　者：杨延安[1] 

机构地区：[1]中国电子科技集团公司第二十三研究所,上海200437

出　　处：《光纤与电缆及其应用技术》2008年第4期19-21,共3页Optical Fiber & Electric Cable and Their Applications

摘　　要：物理发泡聚全氟乙丙烯(FEP)应用到同轴射频电缆中,可以有效降低绝缘的介质损耗和介电常数,从而降低电缆的衰减,提高电缆传输功率。详细分析了物理发泡FEP的材料、挤出设备、挤出模具、挤出温度、氮气注入压力等工艺参数对物理发泡FEP性能的影响。Physically foamed FEP can be used as the insulation of coaxial radio-frequency cables. It offers low dielectric loss and low dielectric constant. Accordingly the cable attenuation can be decreased and the rated power of the cable can be increased. The effect of process parameters, such as the raw materials, extrusion equipment, extrusion tools, extrusion temperature, nitrogen-gas injection pressure, etc. , on the properties of physically foamed FEP are analyzed in detail.

关 键 词：物理发泡 聚全氟乙丙烯 挤出机 挤出模具 挤出温度 

分 类 号：TM24[一般工业技术—材料科学与工程]