各类氟聚合物性能简单对比 |
In general, the chemical resistance of these materials are superior to most other families of plastic. “This” Chemical inert” characteristic is closely allied to their superior performance in ultra pure environment. The chemical inertness varies between the fluoropolymers. The fully fluorinated resin,sucha as PTFE,FEP,PTA and MFA exhibit chemical inertness to a wilder rang of chemicals the do the partially fluorinated polymers such as CTFE(or PCTFE) and ECTFE.A better property in one or two areas is accompanied by a diminished property in others (for example PTFE properties is better than PVDF in chemical resistance but it has lower mechanical properties at normal ambient temperatures. Fully fluorinated polymers (Perfluoropolymers) such as PTFE, FEP and PFA offer better thermal (higher use temperature) and chemical resistance properties than their partially fluorinated counterparts like ECTFE or PCTFE. However, partially fluorinated resins posses better mechanical properties, such as tensile strength, toughness, abrasion and cut-through resistance at ambient temperatures. |