PTFE ntama a ɛyɛ hyew kɛse (PTFE-coated fiberglass) wɔ ɔhyew a ɛko tia a ɛkyɛn so wɔ ne dwumadi a ɛyɛ -70°C kosi 260°C mu. Etumi gyina ɔhyew kyinhyia a ɛkɔ ntɛmntɛm ano, s.e., sɛ efi -50°C frigye mu kɔ 260°C afiri a ɛyɛ hyew mu. Premium grades mpo tra ase sɛ onwini mpofirim fi 260°C kɔ 10°C nsu mu. Nanso, sɛ wobɔ ade no ahodwiriw fi ɔhyew a ɛboro 300°C (a ɛbɛn PTFE 327°C melting point) a, ɛbɛma mpaapaemu ne delamination ntɛm ara. Fiberglass substrate no ma dimensional gyina pintinn; PTFE a wɔde kata so no ne ade a ɛto ano hye.

PTFE ntama a ɛyɛ hyew kɛse no yɛ nea wɔde di dwuma kɛse wɔ nnuruyɛ mu ma nnwuma atitiriw ason: flange gaskets ne pipe linings (ɛko tia acid/alkali a emu yɛ den), reactor ne tank linings (siw dade nsɛe ano, ɛnyɛ den sɛ wobɛhohoro), filter bags ma corrosive flue gas (ɛkɔ 260°C), anti-corrosion ntrɛwmu joints ma ducts, anti-adhesion welding pads, gyae ntama ma composite molding, ne anyinam ahoɔden / ɔhyew insulation wraps. FDA ne UL abasobɔde ahorow a ɛwɔ hɔ.

PTFE ntama a ɛyɛ hyew kɛse no gyina hɔ pintinn kodu 300°C, nanso wɔ ogya mu no ɛporɔw na ɛma mframa a awuduru wom kɛse fi adi: hydrogen fluoride (HF) (ɛsɛe, ahurututu mu edema) ne perfluoroisobutylene (PFIB) (ɛnyɛ kɔla, enni huam, awuduru ~10x sen phosgene, enni nnuru a ekum ɔyare mmoawa). Afei nso carbon monoxide, PFOA nkae, ne trace dioxins. Wusiw akataso a wɔtaa de di dwuma no ntumi nyɛ adwuma; fa afiri a wɔde home a ɛwɔ ne ho (SCBA) di dwuma. Ebia yare no ho sɛnkyerɛnne bɛkyɛ.

Nneɛma a wɔde wie soro a wɔde gu fiberglass ntama so ansa na wɔde PTFE akata so no ho hia kɛse ma PTFE ntama a etwa to a ɛyɛ hyew kɛse adwumayɛ. Organosilane coupling agents yɛ molecule bridges wɔ inorganic glass fiber ne organic PTFE ntam, na ɛma peel ahoɔden kɔ soro fi <2 N/cm kosi 4-8+ N/cm. Ayaresa a ɛfata nso ma ɔhyew a ɛko tia (260°C+), dielectric adwumayɛ, ne nnuru a ɛko tia no yɛ kɛse. Ntama a wɔansiesie no ma ɛyɛ delamination, bubbling, na ɛtra hɔ bere tiaa.

Ahotew ne nsiesie a ɛfata ma PTFE ntama a ɛyɛ hyew kɛse no nkwa nna yɛ tenten. Hohoro bere a wode adi dwuma awie ne bere a woayɛ nwini awie no. Fa brɔs a ɛyɛ mmerɛw, nnuru a wɔde hohoro nneɛma a ɛnyɛ hwee, anaa nsa di dwuma ma nkekae. Mfa acid/alkali a ano yɛ den, bleach, anaa dade a wɔde twitwiw nneɛma nni dwuma da. Silicone ngo a wɔde sra no daa no ma ɔsɛe so tew. Di akwankyerɛ ahorow yi akyi na amma nneɛma a wɔde kata so no ansɛe.