摘要
介绍PTFE泡沫材料的成型工艺。采用悬浮PTFE,稠环芳烃成孔剂,经混合后进行预成型,预成型压力25～40MPa,将预成型产品进行烧结,在烧结起始阶段为干燥,使成孔剂逸出。待成孔剂全部逸出后即可进入烧结阶段。可按不同配比制出不同介电常数的材料以满足使用要求。
Amoulding technology for PTFE foam was described in this paper. Suspension PTFE was mixed with fused ring arene poreforming agent ,and then premoulded, with a moulding pressre of 25—40 MPa. The premoulded product was sintered, the porle—forming agent escaping out at the initial sintering lay drying. The sintering began when all of the pore—forming agent escaping out. PTFE foams with different dielectric constant could be prepared by different formula to meet the need in application.
出处
《塑料工业》
CAS
CSCD
北大核心
1991年第6期30-32,共3页
China Plastics Industry
