Abstract:

Copper clad laminates(CCLs)with high performance based on modified polytetrafluoroethylene(PTFE) were prepared by using blended tetrafluoroethylene and hexafluoropopylene(FEP)as the modification resin.The compatibility of the two resins was then analyzed by means of DSC and SEM.Moreover,the efects of coupling agent,resin content and glass cloth content on the main properties of CCLs were investigated.Th e micro-structure of the cross-sections of CCLs based on the PTFE with or without modification were finally explored．Th e results show that there is excellent compatibility between PTFE and FEP,and that,after the modification by blending,the peeling strength of CCLs increases from 1.8 kN/m to 2.26 kN/m,and the flexural strength increases from 100 MPa to 134 MPa.while the dielectric dissipation factor decreases from 8×10^-4 to 7×10^-4

Key words: polytetrafluoroethylene, copper clad laminate, blending, modification, peeling strength, flexural strength