Kedu ihe kpatara teepu PTFE nwere ike jigide nchikota ya na-enweghị ọdịda na gburugburu ebe okpomọkụ dị elu?

Teepu okpomọkụ dị elu nke PTFE nke Jiangsu Aokai New Materials mepụtara na-eji nrapado nrụgide silicone, nke nwere ike ịrụ ọrụ nke ọma na 250 ° C ogologo oge. Isi ihe kpatara ya dabere na isi ihe atọ ndị a:

1. Isi Chain mejupụtara Si-O Bonds na High Thermal Decomposition Temperature

The molekụla isi yinye nke silicone mgbali-enwe mmetụta nrapado na PTFE elu-okpomọkụ teepu nwere a Si O Si O Ọdịdị. Ike njikọ nke njikọ Si-O dị ihe dịka 445 kJ / mol, dị elu karịa njikọ C-C (ihe dịka 348 kJ / mol) ma ọ bụ C-H bond (ihe dịka 413 kJ / mol) na polymer organic nkịtị dị ka acrylates na rubbers.

N'ebe okpomọkụ dị elu, njikọ C-C na-agbaji ngwa ngwa ma na-ebute mmebi nke yinye, ebe njikọ Si-O chọrọ ike dị elu ka ọ gbawaa. Ya mere, agbụ mkpụrụ ndụ ihe nketa nke silicone PSA na-anọgide na 250ºC, na-ezere mfu adhesion nke mmebi nke thermal-oxidative kpatara.

2. Chemical Cross-Linking Network na-egbochi ime ka ọ dị nro ma na-asọba na okpomọkụ dị elu

rọba silicone enweghị njikọ na-atụgharị ghọọ mmiri mmiri viscous na oke okpomọkụ na-efunarị ike njikọta kpamkpam. Otú ọ dị, a na-ejikọta silicone PSA na teepu okpomọkụ dị elu nke PTFE site na iji peroxide crosslinking ma ọ bụ platinum-catalyzed mgbakwunye crosslinking, na-ejikọta eriri molecular linear n'ime netwọk kwụsiri ike nke akụkụ atọ.

Nhazi a jikọtara ọnụ na-enye ohere ka oyi akwa nrapado nọgide na-enwe àgwà ngbanwe siri ike na 250 Celsius na-enweghị agbaze ma ọ bụ na-asọ dị ka ihe thermoplastic. Ọbụlagodi na mbelata nke modulus dị ntakịrị, ọ ka na-ejigide ike njikọta zuru oke iji guzogide bee.

3. Okpomọkụ mgbanwe iko dị ala (Tg ~ -120°C)

PSA silicone dị na teepu okpomọkụ dị elu nke PTFE nwere Tg dị ala (ihe dị ka -120 Celsius C), nke pụtara na ụdọ molekụla ya na-anọgide na ọnọdụ na-agbanwe nke ukwuu n'ofe oke okpomọkụ sitere na -70 ° C ruo 300 ° C, kama ịbụ steeti enyo na-egbuke egbuke.

Ya mere, n'oge okpomọkụ dị elu, oyi akwa nrapado adịghị esi ike ka ọ ghara inwe ike iwe mmiri ma ọ bụ mee ka ọ dị nro na oke mmiri. Ọ na-ejigide modulus na-agafeghị oke (nchekwa modulus G'≈ 10⁴–10⁶ Pa), nke bụ windo kacha mma maka nrapagide na-enwe mmetụta.

Silicone PSA n'onwe ya nwere ike elu ala (gburugburu 22 mN / m), na-enyere ya aka ime ka mmiri dị ala dị ka PTFE na silicone roba nke ọma ọbụna na okpomọkụ dị elu - na-egbochi debonding na-akpata site na ndakọrịta ike na-adịghị mma.

Ozi dị n'elu bụ Jiangsu Aokai New Materials Technology Co., Ltd.

Maka nkọwa zuru ezu, ọnọdụ ngwa na ngwọta ahaziri nke ngwaahịa anyị zuru oke - gụnyere akwa akwa okpomọkụ dị elu PTFE, teepu okpomọkụ dị elu PTFE, eriri igwe na-ekpo ọkụ PTFE, eriri na-enweghị ihe ọ bụla maka igwe laminating, akwa PTFE nwere otu akụkụ, akwa ọkụ na-eguzogide ọgwụ na-ebufe eriri na okpomọkụ dị elu site na eriri akwa - biko kpọtụrụ anyị.

·  Igwe ọkụ ọrụ: Mr. Guo 18944819998 Mazị Liu 13705266308

N'ịgbaso nkà ihe ọmụma ọrụ nke ọkachamara na iguzosi ike n'ezi ihe, anyị raara onwe anyị nye inye gị ngwọta nkwụsịtụ na ọrụ nlebara anya!