PTFE Tape Adhesion vs Temperature: Ndlela yo Antswisa

Jiangsu Aokai New Materials, muendli wa xihlovo xa xiphurofexinali xa thepi ya mahiselo ya le henhla ya PTFE, u avelana vutivi bya xiphurofexinali eka wena.

Thepi ya mahiselo yale henhla ya PTFE (Teflon) hi xitalo yinga tirhisiwa hiku landzelelana eka mahiselo ya -196°C kuya eka 260°C . Eka switirhisiwa swotala, mpimo wa ku tiya ka mahiselo ya thepi wu siveriwa hi leyara yo namarhela  kutlula substrate ya PTFE. Ku tirha ka yona ku landzela milawu leyi nga erivaleni leyi fambelanaka na mahiselo:

Matirhelo ya adhesive yahunguteka loko mahiselo ya tlakuka  Loko mahiselo ya tlakuka, adhesive yi olova hakatsongotsongo, yi rhendzeleka hambi kuri ku onhaka, leswi endlaka leswaku kuhunguteka matimba ya cohesive. Hi ndlela ya macroscopic, leswi swi vonaka tani hi ku hunguteka ka ku khoma namarhela.

Mpimo wa matirhelo lowu kumiwaka hi muxaka wa xinamarheti  Swinamarheti swohambana hambana swina mahiselo yohambana swinene yo tsandzeka:

 

To improve the high-temperature holding time , optimization yi endliwa ngopfu kusuka eka swiyenge swinharhu: ku endliwa ka adhesive, matirhelo ya substrate, na xivumbeko xa interfacial bonding.

1. Leyara ya Xinamarheti: Ndlandlamuxa Xihlanganisi xo tsana

·  Hlawula sisiteme ya xinamarheti lexi nga tiyangiki hi mahiselo ya le henhla : Rhangisa xinamarheti lexi twaka ntshikelelo wa silicone eka swiyimo swa ntirho swa nkarhi wo leha swa mahiselo ya le henhla.

·  Ku cinca ka fluorocarbon : Cinca xinamarheti xa silicone hi swihlanganisi swa fluorocarbon ku tlakusa mahiselo ya ku cinca ka nghilazi (Tg) kuya eka 230°C. Endzhaku ka 48 wa tiawara ta ku tirhisiwa loku yaka emahlweni eka 260°C, mpimo wa ku khomiwa ka ku namarhela wa ha tlula 85%.

·  Ku nghenisa netiweke ya crosslinking : Aka ti network ta crosslinking ta nano-scale ku ndlandlamuxa swinene matimba yo hlangana na ku tiya ka ku tsemeka ka leyara yo namarhela eka mahiselo yale henhla.

·  Engeta ti thermal stabilizers : Nghenisa hindered phenol na swin’wana swa thermal stabilizers eka formula ku sivela kahle ku onhaka ka oxidative ehansi ka kuhisa lokukulu.

2. Substrate Layer: Tlakusa mpimo wa ku tiya ka mahiselo hinkwawo

·  Ku cinca ka nano-filler : Engeta nano silica, boron nitride nanotubes na ti nanoparticles tin’wana eka substrate ya PTFE ku vumba tindzhawu ta physical crosslinking. Mahiselo ya ku soholotiwa ka kuhisa yanga engeteriwa hi 20–30°C, loko ya hlayisa kutlula 90% wa ku namarhela kosungula eka 260°C.

·  Vutshunguri bya ku hlanganisa timolekhuli : Ku hlanganisa tikhetane ta timolekhuli ta PTFE ku tlakusa mahiselo ya vukorhokeri lebyi yaka emahlweni ku fika eka 300°C.

·  Ku tiyisisiwa ka fibre : Engeta 25% wa fibre ya nghilazi kumbe carbon fibre ku tlakusa ku tiya ka creep hi 300%, leswi endlaka leswaku ku tirhisiwa loku yaka emahlweni kuya fika eka 280°C.

3. Interface & Structural Design: Ku ndlandlamuxa ku tshamiseka ka bonding

·  Vutshunguri bya le henhla ka substrate : Tirhisa vutshunguri bya plasma kumbe etching ya tikhemikhali eka vuandlalo bya PTFE ku engetela ku khwaxa na ntirho wa le henhla, ku tiyisisa ku namarhela ka interfacial na ku papalata delamination eka mahiselo yale henhla.

·  Engetela leyara ya xisirhelelo xa le xikarhi : Nghenisa leyara yo hambanyisa ya polyimide (PI) exikarhi ka substrate ya PTFE na xinamarheti ku sivela ku nghena ka namarheta na ku rhurha ehansi ka mahiselo ya le henhla, ku antswisa ku tiya ka xivumbeko hinkwaxo.

·  Ku antswisa xivumbeko lexi hlanganisiweke : Amukela xivumbeko xa xivumbeko xa swiphemu swo tala: PTFE coating + reinforcing substrate + high-temperature stable layer , ku ringanisela ku lwisana na ku hisa na matirhelo ya namarheta hi ku angarhela.

·  Reserve thermal expansion clearance : Xiringaniso xa ku andzisiwa ka linear xa PTFE xi kwalomu ka khume ra tiphesente ta nsimbi.

Hlayisa xivandla xa 0.15–0.3 mm  eka dizayini ya xivumbeko kuva u humesa ntshikelelo wa mahiselo hindlela leyinene.

Vuxokoxoko bya xithekiniki lebyi nga laha henhla byi nyikiwa hi Jiangsu Aokai Switirhisiwa Leswintshwa Thekinoloji Co., Ltd.

Loko u lava vuxokoxoko byin’wana eka tipharamitha ta xithekiniki, swiyimo swa xikombelo na swintshuxo leswi endleriweke layini ya hina ya swikumiwa leswi heleleke — 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 ra muchini wo fusa leri nga riki na swirhabyani, lapi ra PTFE ra tlhelo rin’we, bandi ra conveyor leri tiyiselaka mahiselo ya le henhla na lapi ra fiberglass leri tiyiselaka mahiselo ya le henhla — hi kombela u ntshunxeka ku hi tihlanganisa:

·  Nomboro ya riqingho: Tatana Guo +86 18944819998

·  Nomboro ya riqingho: Tatana Liu +86 13705266308

Minkarhi hinkwayo hi namarhela filosofi ya bindzu ya vutshila na vutshembeki, naswona hi lwela ku ku nyika swintshuxo swa tiindasitiri swa xiyimo xin’we na vukorhokeri bya le ndzhaku ka ku xavisiwa lebyi anakanyisisiweke.