Kuki Tape ya PTFE ishobora kugumya gukomera nta kunanirwa mubushyuhe bwo hejuru?

Kanda ya PTFE yubushyuhe bwo hejuru yakozwe na Jiangsu Aokai Ibikoresho bishya ikoresha silicone yumuvuduko ukabije, ishobora gukora neza kuri 250 ° C mugihe kirekire. Impamvu zifatizo ziri mu ngingo eshatu zikurikira:

1. Urunigi nyamukuru rugizwe na Si - O Bonds hamwe nubushyuhe bwo hejuru bwumuriro

Inzira nyamukuru ya molekuline yumuvuduko wa silicone yunvikana muri kaseti ya PTFE yubushyuhe bwo hejuru ifite imiterere ya Si O Si O. Ingufu zububiko bwa Si - O zigera kuri 445 kJ / mol, zisumba cyane umurunga C - C (hafi 348 kJ / mol) cyangwa C - H (hafi 413 kJ / mol) muri polymers zisanzwe nka acrylates na rubber.

Ku bushyuhe bwinshi, C - C ihuza byoroshye kandi bigatera urunigi kwangirika, mugihe imiyoboro ya Si - O isaba imbaraga nyinshi zo guturika. Kubwibyo, urunigi nyamukuru rwa silicone PSA ikomeza kuba ntangere kuri 250 ° C, irinda igihombo cya adhesion iterwa no kwangirika kwubushyuhe bwa okiside.

2. Urusobe rwimiti ihuza imiyoboro irinda koroshya no gutemba mubushyuhe bwinshi

Rubber idacometse kuri silicone reberi ihinduka amazi meza cyane mubushyuhe bwinshi kandi itakaza burundu imbaraga zifatika. Nyamara, silicone PSA muri kaseti ya PTFE yubushyuhe bwo hejuru irahuzwa binyuze kuri peroxide ihuza cyangwa platine-catalizike yongeyeho guhuza, ihuza iminyururu ya molekile y'umurongo mumurongo uhamye wibice bitatu.

Iyi miterere ihujwe ituma urwego rufatika rugumana imyitwarire ikomeye ya elastique kuri 250 ° C idashonga cyangwa itemba nkibikoresho bya termoplastique. Ndetse no kugabanuka gake muri modulus, iracyafite imbaraga zihagije zo kurwanya gukuramo.

3. Ubushyuhe Buke bw'Ibirahure (Tg ~ −120 ° C)

Silicone PSA muri kaseti ya PTFE yubushyuhe bwo hejuru ifite Tg nkeya cyane (hafi −120 ° C), bivuze ko iminyururu ya molekile yayo iguma mumiterere ya elastike cyane hejuru yubushyuhe bwagutse kuva kuri 70 ° C kugeza 300 ° C, aho kuba ibirahure byoroshye.

Rero, ku bushyuhe bwinshi, igiti gifatika ntigikomera gutakaza ubushobozi bwo gutose cyangwa koroshya umuvuduko ukabije. Ikomeza modulus iringaniye (modulus yo kubika G '≈ 10⁴ - 10⁶ Pa), niyo idirishya ryiza ryo gufatana uburemere.

Silicone PSA ubwayo ifite ingufu nke zubutaka (hafi 22 mN / m), ikabasha gutobora ingufu zubutaka-buke nka PTFE na reberi ya silicone neza ndetse no mubushyuhe bwinshi - birinda debonding iterwa ningufu zubutaka zidahuye.

Amakuru yavuzwe haruguru yatanzwe na Jiangsu Aokai Ibikoresho bishya byikoranabuhanga Co, Ltd.

Kubisobanuro birambuye, ibintu byakoreshejwe hamwe nibisubizo byabigenewe byuzuye mubicuruzwa byacu byuzuye - harimo imyenda ya PTFE yubushyuhe bwo hejuru, kaseti ya PTFE yubushyuhe bwo hejuru, umukandara wa meshi wo hejuru wa PTFE, umukandara udafite imashini ya laminating, umwenda wa PTFE uruhande rumwe, imikandara ya convoyeur irwanya ubushyuhe bwinshi hamwe nigitambara cyo hejuru cya fiberglass - nyamuneka twandikire ukoresheje:

·  Umurongo wa telefone: Bwana. Guo 18944819998 Bwana Liu 13705266308

Twisunze filozofiya ya serivisi yubunyamwuga nubunyangamugayo, twiyemeje kuguha ibisubizo bimwe hamwe na serivisi yitonze!