Hobaneng ha Teipi ea PTFE e ka Boloka Momahano oa Eona Ntle le ho Se hloleha Libakeng tse Mocheso o Phahameng?

Theipi ea mocheso o phahameng oa PTFE e hlahisoang ke Jiangsu Aokai New Materials e sebelisa sekhomaretsi sa silicone se nang le khatello, se ka sebetsang ka mokhoa o tsitsitseng ho 250 ° C ka nako e telele. Mabaka a mantlha a ipapisitse le lintlha tse tharo tse latelang:

1. Ketane e ka Sehloohong e na le Li-Bond tsa Si–O tse nang le Mocheso o Phahameng oa ho Oa ha Thermal

Ketane e kholo ea limolek'hule ea sekhomaretsi sa silicone se nang le khatello ea maikutlo ho PTFE tepi e phahameng ea mocheso e na le sebopeho sa Si O Si O. Matla a bond a Si-O bond a batla a le 445 kJ/mol, a phahame haholo ho feta a C–C bond (hoo e ka bang 348 kJ/mol) kapa C–H bond (hoo e ka bang 413 kJ/mol) ka lipolymer tse tloaelehileng tse kang li-acrylate le liraba.

Ha lithempereichara tse phahameng, li-bond tsa C-C li robeha habonolo le ho baka ho senyeha ha ketane, athe Si-O li-bond li hloka matla a mangata haholo hore li qhome. Ka hona, ketane e kholo ea limolek'hule ea silicone PSA e lula e tiile ho 250 ° C, e qoba tahlehelo ea ho khomarela e bakoang ke ho senyeha ha mocheso oa mocheso.

2. Chemical Cross-Linking Network e Thibela ho Kolofala le ho Phalla ka Mocheso o Phahameng

Rabara ea silicone e sa amaneng e fetoha mokelikeli oa viscous mochesong o phahameng mme e lahleheloa ke matla a momahano ka botlalo. Leha ho le joalo, Silicone PSA ka PTFE theipi phahameng-thempereichara e crosslinked ka peroxide crosslinking kapa platinum-catalyzed tlatsetso crosslinking, hokela linear diketane limolek'hule ka netweke e tsitsitseng mahlakore a mararo.

Sebopeho sena se kopantsoeng se lumella lera la sekhomaretsi hore le boloke boitšoaro bo tiileng ba 250 ° C ntle le ho qhibiliha kapa ho phalla joaloka lisebelisoa tsa thermoplastic. Le ha modulus e fokotsehile hanyane, e ntse e boloka matla a momahano a lekaneng ho hanela peeling.

3. Mocheso o Tlase oa Phetoho ea Khalase (Tg ~ −120°C)

Silicone PSA ka PTFE theipi e phahameng ea mocheso e na le Tg e tlaase haholo (hoo e ka bang -120 ° C), e bolelang hore liketane tsa eona tsa molek'hule li lula li le boemong bo tsitsitseng haholo ho pholletsa le mocheso o pharaletseng ho tloha ho -70 ° C ho ea ho 300 ° C, ho e-na le boemo ba khalase e brittle.

Kahoo, lithempereicharang tse phahameng, lera la sekhomaretsi ha le thatafale ho lahleheloa ke matla a ho kolobisa kapa hona ho nolofatsa ho phalla ho feteletseng. E boloka modulus e itekanetseng (modulus ea polokelo G' ≈ 10⁴–10⁶ Pa), e leng fensetere e loketseng bakeng sa ho khomarela khatello.

Silicone PSA ka boeona e na le matla a tlase a holim'a metsi (e ka bang 22 mN/m), e e nolofalletsang ho kolobisa li-substrates tse tlase-tlase tse kang PTFE le rabara ea silicone hantle esita le ka mocheso o phahameng - ho thibela ho arohana ho bakoang ke ho lumellana ha matla a holim'a metsi.

Lintlha tse ka holimo li fanoe ke Jiangsu Aokai New Materials Technology Co., Ltd.

Bakeng sa lintlha tse qaqileng, maemo a ts'ebeliso le litharollo tse ikhethileng tsa lihlahisoa tsa rona tse felletseng - ho kenyeletsoa lesela la mocheso o phahameng oa PTFE, tepi ea mocheso o phahameng oa PTFE, lebanta le nang le mocheso o phahameng oa mocheso oa PTFE, lebanta le se nang mochini bakeng sa mechini e laminang, lesela le nang le lehlakore le le leng la PTFE, lesela le nang le mocheso o phahameng oa mocheso o phahameng le lesela le nang le mocheso o phahameng ka kopo -

·  Mohala oa Ts'ebeletso: Mong. Guo 18944819998 Monghali Liu 13705266308

Ho latela filosofi ea ts'ebeletso ea botsebi le bots'epehi, re ikemiselitse ho u fa litharollo tsa sebaka se le seng le ts'ebeletso e hlokolosi!