DF1700 and DF1900 Heat Weldable Films
CHEMFILM® DF1700 and DF1900 are heat bondable multilayer cast fluoropolymer films produced using a proprietary process. These films have a PTFE core with a thin layer of FEP or PFA on one surface. Double bondable (DB) films are also available with PFA on either surfaces or FEP on one surface and PFA on the other surface. Laser markable (LM) films are also available. DF1700 is available from 0.5-5.0 mils, and DF1900 is available from 1-4 mils. Colors and slitting are available on request.
| Features | Benefits |
|---|---|
| Cast Film |
|
| Multilayer |
|
| Fluoropolymer |
|
| Typical Properties | Test Method | Value | Units |
|---|---|---|---|
| Mechanical | |||
| Tensile Strength | ASTM D-882 | 29.6 (4,300) | MPa (psi) |
| Elongation | ASTM D-882 | 400 | % |
| Elastic Modulus | ASTM D-882 | 413 (60,000) | MPa (psi) |
| Continuous Service Temp. | - | -188 to 260 | oC |
| (-400 to 500) | (oF) | ||
| Electrical | |||
| Dielectric Constant | ASTM D-150 | 2 | 60-108 Hz |
| Power/Dissipation | ASTM D-150 | <.0001 | |
| Surface Resistivity | ASTM D-257 | 1x1018 | |
| Volume Resistivity | ASTM D-257 | >1015 | |
| Dielectric Strength | ASTM D-149 | 4200 | volts/mil |
| Surface Arc Resistivity | ASTM D-495 | Does not arc | |
