Dɛn Nti na PTFE Teyp Betumi Akura Ne Ntama a Ɛbata Ho a Ɛrentumi Nni huammɔ wɔ Mmeae a Ɔhyew Kɛse Mu?

PTFE teyp a ɛyɛ hyew kɛse a Jiangsu Aokai New Materials yɛe no de silicone a ɛtumi nkata so, a ɛtumi yɛ adwuma pintinn wɔ 250°C mu kyɛ di dwuma. Nneɛma atitiriw a enti ɛte saa no wɔ nsɛm abiɛsa a edidi so yi mu:

1. Nkɔnsɔnkɔnsɔn Titiriw no yɛ Si–O Nkitahodi a Ɔhyew a Ɛporɔw Ɔhyew a Ɛkorɔn

Molekyule nkɔnsɔnkɔnsɔn titiriw a ɛwɔ silicone nhyɛso-te nka adhesive a ɛwɔ PTFE ɔhyew a ɛkorɔn teyp mu no wɔ Si O Si O nhyehyɛe. Si–O nkitahodi ahoɔden a ɛwɔ nkitahodi mu no bɛyɛ 445 kJ/mol, ɛboro C–C nkitahodi (bɛyɛ 348 kJ/mol) anaa C–H nkitahodi (bɛyɛ 413 kJ/mol) wɔ organic polymers a wɔtaa de di dwuma te sɛ acrylates ne rɔba mu.

Wɔ ɔhyew a ɛkɔ soro mu no, ɛnyɛ den sɛ C–C nkitahodi ahorow no bubu na ɛkanyan nkɔnsɔnkɔnsɔn no sɛe, bere a Si–O nkitahodi ahorow hwehwɛ ahoɔden a ɛkorɔn kɛse na ama atumi apaapae. Enti, silicone PSA no molecule nkɔnsɔnkɔnsɔn titiriw no kɔ so yɛ nea ɛte saa wɔ 250°C, na ɛkwati adhesion a ɛyera a ɛnam ɔhyew-oxidative a ɛsɛe so.

2. Chemical Cross-Linking Network Siw Softening ne Flow ano wɔ Ɔhyew a Ɛkorɔn mu

Silicone rɔba a enni nhama no dan nsu a ɛyɛ nnam wɔ ɔhyew a ɛkɔ soro mu na ɛhwere ahoɔden a ɛka bom koraa. Nanso, wɔde peroxide crosslinking anaa platinum-catalyzed addition crosslinking na ɛbɔ silicone PSA a ɛwɔ PTFE teapɔn a ɛyɛ hyew kɛse mu no, na ɛka linear molecule nkɔnsɔnkɔnsɔn bom ma ɛyɛ afã abiɛsa ntam nkitahodi a ɛyɛ den.

Saa crosslinked structure yi ma adhesive layer no tumi kura solid elastic suban mu wɔ 250°C a ɛnnwene anaasɛ ɛnsen te sɛ thermoplastic nneɛma. Sɛ modulus no so tew kakra mpo a, ɛda so ara kura ahoɔden a ɛdɔɔso a ɛma ɛka bom a ɛbɛma atumi ako atia peeling.

3. Glass Nsakrae Ɔhyew a Ɛba Fam (Tg ~ −120°C) .

Silicone PSA a ɛwɔ PTFE teapɔn a ɛyɛ hyew kɛse mu no wɔ Tg a ɛba fam koraa (bɛyɛ −120°C), a ɛkyerɛ sɛ ne molecule nkɔnsɔnkɔnsɔn no da so ara wɔ tebea a ɛyɛ den kɛse mu wɔ ɔhyew a ɛtrɛw fi −70°C kosi 300°C mu, sen sɛ ɛbɛyɛ ahwehwɛ tebea a ɛyɛ mmerɛw.

Enti, wɔ ɔhyew a ɛkɔ soro mu no, ade a wɔde nkata so no nyɛ den ma ɛhwere tumi a ɛma ɛyɛ nsu na saa ara nso na ɛnyɛ mmerɛw ma ɛsen dodo. Ɛkura modulus a ɛkɔ fam (storage modulus G’ ≈ 104–106 Pa), a ɛyɛ mfɛnsere a eye sen biara ma nhyɛso-a ɛyɛ nkate a ɛbata ho.

Silicone PSA ankasa wɔ ahoɔden a ɛba fam wɔ soro (bɛyɛ 22 mN/m), na ɛma ɛtumi ma nsuo a ɛwɔ soro a ahoɔden sua te sɛ PTFE ne silicone rɔba yɛ nsuo yie wɔ ɔhyew a ɛkɔ soro mpo mu — ɛsiw debonding a ɛnam soro ahoɔden a ɛnyɛ papa a ɛne ne ho nhyia nti.

Nsɛm a ɛwɔ atifi hɔ no yɛ nea Jiangsu Aokai New Materials Technology Co., Ltd. na ɛde mae.

Sɛ wopɛ parameters a ɛkɔ akyiri, application scenarios ne customized solutions of our full product range — a PTFE high-temperature ntama, PTFE high-temperature tape, PTFE high-temperature mesh belt, seamless belt ma laminating mfiri, single-sided PTFE ntama, high-temperature resistant conveyor belts ne high-temperature fiberglass ntama ka ho — yɛsrɛ wo, di yɛn ho nkɔmmɔ via:

·  Ɔsom Hotline:Owura. Guo 18944819998 Owura Liu 13705266308 Ɔde ne nsa kyerɛɛ ne so

Yɛdi ɔsom nyansapɛ a ɛfa adwumayɛ ne nokwaredi ho akyi no, yɛatu yɛn ho ama sɛ yɛde ano aduru a ɛwɔ baabi biako ne ɔsom a wɔde aso tie bɛma wo!