Ha Yini Thepi Ya PTFE Yi Nga Hlayisa Ku Namarhela Ka Yona Handle Ka Ku Hluleka Eka Tindhawu Ta Mahiselo Ya Le Henhla?

Thepi ya PTFE ya mahiselo yale henhla leyi humesiweke hi Jiangsu Aokai New Materials yitirhisa silicone pressure-sensitive adhesive, leyinga tirha hiku tiya eka 250°C kuringana nkarhi woleha. Swivangelo swa xisekelo swi le ka tinhla tinharhu leti landzelaka:

1. Main Chain Yi Vumbiwa hi Si–O Bonds leyingana Mahiselo yale henhla ya Thermal Decomposition

Molecular main chain ya silicone pressure-sensitive adhesive eka PTFE high-temperature tape yina xivumbeko xa Si O Si O. Enerji ya bond ya Si–O bond yi kwalomu ka 445 kJ/mol, yale henhla swinene kutlula C–C bond (kwalomu ka 348 kJ/mol) kumbe C–H bond (kwalomu ka 413 kJ/mol) eka ti organic polymers leti tolovelekeke tofana na ti acrylates nati rhaba.

Eka mahiselo yale henhla, ti C–C bonds ti tshoveka hiku olova naswona ti hlohletela ku onhaka ka chain, kasi ti Si–O bonds ti lava matimba yale henhla swinene kuva ti phatluka. Hikokwalaho, molecular main chain ya silicone PSA yitshama yiri kona eka 250°C, ku papalata ku lahlekeriwa hi adhesion leswi vangiwaka hiku onhaka ka thermal-oxidative.

2. Chemical Cross-Linking Network Yi Sivela Ku Olovisa na ku Famba eka Mahiselo ya le Henhla

Rhaba ya silicone leyi nga hlanganisiwangiki yi hundzuka mati yo tsindziyela eka mahiselo yale henhla naswona yi lahlekeriwa hi matimba yo hlangana hiku hetiseka. Hambiswiritano, silicone PSA eka thepi ya mahiselo yale henhla ya PTFE yi hlanganisiwa hiku tirhisa peroxide crosslinking kumbe platinum-catalyzed addition crosslinking, ku hlanganisa ti linear molecular chains eka netiweke ya swiphemu swinharhu leyi tiyeke.

Xivumbeko lexi xa crosslinked xipfumelela adhesive layer kuva yi hlayisa mahanyelo ya solid elastic eka 250°C handle ko n’oka kumbe ku khuluka kufana na switirhisiwa swa thermoplastic. Hambi leswi modulus yihungutekeke nyana, yahari na matimba yoringanela ya cohesive kuva yi lwisana na ku tshoveka.

3. Mahiselo ya le hansi ya ku cinca ka nghilazi (Tg ~ −120°C) .

Silicone PSA eka PTFE high-temperature tape yina Tg yale hansi swinene (kwalomu ka −120°C), leswivulaka leswaku ti molecular chains ta yona titshama eka xiyimo xa elastic swinene eka mahiselo yo anama kusuka eka −70°C kuya eka 300°C, kutlula xiyimo xa brittle glassy.

Xisweswo, eka mahiselo yale henhla, leyara leyi namarhelaka ayi nonoki leswaku yita lahlekeriwa hi vuswikoti byo tsakamisa naswona ayi oloviki kuya eka ku khuluka ngopfu. Yi hlayisa modulus yo ringanela (storage modulus G’ ≈ 104–106 Pa), leyi kunga fasitere lerinene ra ku namarhela loku twaka ntshikelelo.

Silicone PSA hi yoxe yina eneji yale hansi yale henhla (kwalomu ka 22 mN/m), leswi endlaka leswaku yi kota ku tsakamisa ti substrates ta eneji yale hansi yale henhla yofana na PTFE na silicone rubber kahle hambi kuri eka mahiselo yale henhla — leswi sivelaka debonding leyi vangiwaka hiku fambelanisa kahle ka eneji yale henhla.

Rungula leri nga laha henhla ri nyikiwile hi Jiangsu Aokai New Materials Technology Co., Ltd.

Ku kuma vuxokoxoko bya tipharamitha, swiyimo swa xikombelo na swintshuxo leswi endleriweke wena swa nxaxamelo wa hina hinkwawo wa swikumiwa — ku katsa na lapi ra mahiselo ya le henhla ya PTFE, thepi ya mahiselo ya le henhla ya PTFE, bandi ra mesh ra mahiselo ya le henhla ya PTFE, bandi leri nga riki na swirhabyani ra michini yo laminating, lapi ra PTFE ra tlhelo rin’we, mabandhi yo fambisa lama nga ni mahiselo ya le henhla lama lwisanaka na lapi ra fiberglass ya mahiselo ya le henhla — hi kombela u hi tihlanganisa hi ku tirhisa:

·  Nomboro ya Vukorhokeri:Mr. Guo 18944819998 Nkulukumba Liu 13705266308

Hi ku namarhela filosofi ya vukorhokeri ya vutshila na vutshembeki, hi tinyiketerile ku ku nyika swintshuxo swa xiyimo xin’we na vukorhokeri lebyi nga na vukheta!