Fiberglass ntama a wɔatrɛw mu (ntama a wɔde asaawa ayɛ a ɛdɔɔso) yɛ soronko koraa wɔ ntama a wɔde fiberglass ayɛ a wɔtaa de di dwuma ho wɔ asaawa nhyehyɛe mu. Ɛdenam mframa a ano yɛ den a wɔde yɛ adwuma so no, wɔtetew ahwehwɛ nhama a ɛkɔ so no mu, twitwiw, na wɔde hyɛ asaawa a ɛyɛ kɛse te sɛ kotoku mu. Eyi ma ntama a ɛyɛ den, ɛyɛ mmerɛw a ɛwɔ ɔhyew a ɛkorɔn (mframa a wɔakyekyere), ɛyɛ nea ɛne ne ho hyia yiye, filtration efficiency a ɛkorɔn, ne tear/flex resistance a ɛkɔ anim – a ɛho ka yɛ tensile ahoɔden a ɛba fam kakra. Wɔde yɛ gasket a ɛyɛ hyew kɛse, paipu wraps, filter bags, ne oven seals.

Raw material ahotew yɛ fapem a PTFE a ɛkorɔn-ɔhyew ntama adwumayɛ. PTFE emulsion a ɛho tew kɛse (dade ions biara nni hɔ, nkae a emu duru sua biara nni mu) hwɛ hu sɛ ɔhyew a ɛko tia (ɛnyɛ kɔkɔɔ a ɛkɔ soro kodu 260°C), ɛnyɛ nea ɛbata ho a ɛyɛ den, na dielectric ahoɔden a ɛkorɔn. Wɔ fiberglass ho no, E-glass a alkali nnim (Na2O <0.8%) kura ahoɔden ne nea ɛbɔ ho ban wɔ ɔhyew a ɛkɔ soro mu; medium/high-alkali glass ma nneɛma sɛe. Sɛ woyi nneɛma a wɔde nwene kɛse fi hɔ koraa a, esiw carbonization ne delamination ano. Ahotew ka ɔsom nkwa, aduan-grade a wodi so, ne anyinam ahoɔden ahotoso so nkɛntɛnso tẽẽ.

Fiberglass ntama a wɔde di kan ma ɛyow yiye no ho hia kɛse ma PTFE a wɔde kata so akyiri yi, resin a wɔde bɛhyɛ mu, anaa lamination. Ayaresa atitiriw abiɛsa: nsu a woyi fi hɔ wɔ 105-120°C (simma 10-30 a egyina emu duru so), dewaxing/thermal cleaning wɔ 300-450°C (LOI <0.1%, kwati>500°C), ne preheating wɔ 60-100°C ansa na wɔde akata so. Di fononoo mu hyew a ɛyɛ pɛ (±5°C) so, hyɛ sɛ wɔma nsu fi mu, na bɔ ntama a wɔde silane ayɛ ho ban wɔ 110°C ase. Fa ntama a ayow sie nkotoku a wɔatoto mu anaa adan a ɛyɛ nwunu (<30°C, <40% RH).

PTFE teyp a ɛyɛ hyew kɛse no wɔ nkyene a wɔde petepete so yiye, nanso nea ɛyɛ mmerɛw ne ade a wɔde nkata so ne fiberglass substrate no anoano. Akwan a wɔfa so yɛ nhwehwɛmu: 1000h neutral salt spray (NSS) sɔhwɛ, susuw peel ahoɔden a ɛkora so (≥80% a ɛho hia), aniwa mu sintɔ (ma so, blistering), ne dade substrate corrosion. Sɛ wopɛ po ne mmeae a nkyene nsuonwini pii wɔ mu a: fa silicone PSA (ɛnyɛ acrylic), PTFE substrate a wɔde ahyɛ mu ma koraa di dwuma, fa sealant a ɛko tia wim tebea kata anoano, na fa primer gu dade so.

Ɛkame ayɛ sɛ PTFE ntama a ɛyɛ hyew kɛse (PTFE-coated fiberglass) yɛ nea nnuru ntumi nyɛ adwuma, nanso nneɛma bi ma nsɛe wɔ tebea pɔtee bi mu. PTFE ntua tẽẽ ba wɔ alkali dade a wɔanwene (sodium, potassium), nneɛma a ɛyɛ den a ɛma fluorinating (F2, ClF3) wɔ ɔhyew a ɛkorɔn mu, ne alkali a ano yɛ den a wɔanwene a ɛboro 300°C so. Nsɛe a ɛnteɛ ba bere a hydrofluoric acid (HF), alkalis a ɛyɛ hyew a wɔahyɛ no den, anaa phosphoric acid a ɛyɛ hyew hyɛn nneɛma a wɔde kata so no mu sintɔ ahorow mu na ɛtow hyɛ fiberglass substrate no so no. Sɛ wopɛ nnuru a ɛtra so a, fa PTFE sini a ɛho tew a fiberglass nni mu di dwuma.

PTFE teyp a ɛyɛ hyew kɛse hwere nea ɛbata ho bere a wɔde adi dwuma mpɛn pii akyi esiane efĩ a ɛwɔ soro (mfutuma, silicone ngo), adhesive cohesive huammɔdi (nkae), anaasɛ substrate bonding a ɛyɛ mmerɛw nti. Ano aduru: silicone PSA a ɛwɔ crosslink kɛse (tukɔ a ɛba fam, tack/kura tumi a ɛkari pɛ), primer ayaresa wɔ PTFE substrate no so, fiberglass a ɛyɛ den akyi, ne sɛnea wɔde di dwuma yiye (nneɛma a ɛho tew, peel a ɛyɛ nwini, 180° angle). Dodow mu sɔhwɛ ma nkɔso a aba no yɛ nokware.

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 ntɛmntɛm ano, s.e., 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 ano 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 teapɔn a ɛyɛ hyew a ɛkorɔn a wɔde sie wɔ tebea horow a wɔakyerɛ mu (10-25°C, 40-70% RH, a ɛwɔ akyirikyiri fi UV/nhyɛso a emu yɛ duru ho) wɔ nkwa nna a wɔahyɛ da ayɛ a ɛyɛ asram 3-6 (premium grades kosi asram 12). Nneɛma titiriw a ɛma nneɛma sɛe: ɛnsɛ sɛ ahoɔden a wɔde peel no kɔ fam sen 70% wɔ bo a edi kan no mu; nkae biara nni hɔ a wɔde nkata so bere a wɔayi ɔhyew a ɛkɔ soro afi hɔ akyi; carbonization anaasɛ mpaapaemu biara nni hɔ wɔ ɔhyew a wɔahyɛ mu. Nhwehwɛmu ntɛmntɛm: nsaano unwinding te nka, 260 ° C nkae sɔhwɛ, ne lamination shrinkage sɔhwɛ.

PTFE ntama a ɛyɛ hyew kɛse (PTFE-coated fiberglass) de mfaso atitiriw anan ma sɛ anti-corrosion lining: nnuru a ɛnyɛ adwuma (ɛko tia aqua regia, alkalis a ɛyɛ den, solvents), ɔhyew a ɛtrɛw (-70°C kosi 260°C kɔ so, 350°C peak), dimensional stability (<0.5% elongation), ne non-stick surface (ɛnyɛ den ahotew, siw nneɛma a ɛbɛboaboa ano ano). Wɔde di dwuma wɔ nnuru a wɔde fa nsu mu, abantenten a wɔde yi sulfur fi mu, nsukorabea a wɔde nsu gu mu, ne nnuan/nnuruyɛ mfiri mu. FDA abasobɔde ahorow a ɛwɔ hɔ.