Vuyelo bya Cooling Rate eka Thepi ya PTFE

Tanihi muendli wosungula wa tithepi ta mahiselo yale henhla ya PTFE, Jiangsu Aokai New Materials laha yi andlala switandzhaku swa tindlela to kufumeta na mimpimo yo kufumeta eka matirhelo ya tithepi ta mahiselo yale henhla ya PTFE leti horisiweke.

I. Nkoka wa Swihlawulekisi swa PTFE Crystallization na Vulawuri bya Mpimo wa ku Pfuxeta

Substrate ya PTFE ya cured high-temperature tape yi wela eka semi-crystalline polymer, leyi hundzaka eka crystallization ya xihatla hinkarhi wa ku kufumela endzhaku ka sintering. Kahle kahle, cooling rate i core process parameter ku lawula crystallinity ya PTFE high-temperature tape: ku kufumela hiku nonoka swiyisa eka crystallinity yale henhla, kasi ku kufumela hiku hatlisa swi endla leswaku kuva na crystallinity yale hansi.

II. Vuyelo bya Slow Cooling eka Tithepi ta PTFE ta mahiselo yale henhla

Nkucetelo eka Ntshikelelo wa le Ndzeni Ku  kufumela hiku nonoka swinga hunguta kahle ntshikelelo wa mahiselo lawa ya saleke endzeni ka thepi. Loko tape yi titimela hi ntumbuluko endzeni ka furnace, PTFE matrix na glass fibre skeleton swina nkarhi lowu ringaneleke ku lulamisa ku hambana ka shrinkage hiku tirhisa molecular chain relaxation, ku papalata local stress concentration.

Endlelo leri amukeriwaka ngopfu iku kufumeta tape hi ntumbuluko eka furnace kuya eka 150–200°C loko kungase humesiwa leswaku yita kufumetiwa hi moya. Endlelo leri ro kufumela hiku nonoka ri hunguta ntshikelelo wale ndzeni hindlela leyinene naswona ri sivela coating delamination xikan’we naku pandzeka.

Nkucetelo eka Kutshamiseka ka Dimensional  Ku kufumela hiku nonoka swi antswisa swinene kutshamiseka ka dimensional. Hi nkarhi wa ku kufumela hiku nonoka, ti molecular chains ta PTFE ti hlela eka ti crystal lattices ta ntolovelo hindlela leyi ringaneleke, ti endla crystallinity yale henhla xikan’we na ti crystal grains leti hluvukisiweke kahle, leswi tiyisisaka ti dimensions tohetelela leti tiyeke.

Kuhunguteka nyana ka mahiselo swita humelela ehansi ka mahiselo yale henhla eka kutirhisiwa ka xiviri, hikokwalaho switsundzuxiwa ku hlayisa 1%–2% margin hinkarhi wa ku cheriwa. Ku kufumela hiku nonoka swiendla leswaku kuva na kuhunguteka loku tiyeke na deformation leyintsongo ya masalela.

Nkucetelo eka Matirhelo ya Adhesive  Ku kufumela hiku nonoka swi endla switandzhaku swimbirhi eka nhundzu ya adhesion. Hi tlhelo rin’we, swipfumelela leyara yo namarhela ku hetisa cross-linking na stress relaxation hiku hetiseka, ku hlayisa matimba ya bonding lawa ya tiyeke. Hi tlhelo rin’wana, crystallinity yale henhla yi engetela surface rigidity ya PTFE substrate, leswi vangaka ntshikelelo lowu hlanganisiweke eka bonding interface ehansi ka matimba yo peeling.

III. Vuyelo bya Ku Pfuxeta Hi Xihatla eka Tithepi ta PTFE ta mahiselo ya le henhla

     Nkucetelo eka Ntshikelelo wa le Ndzeni  Ku kufumela hi xihatla i xivangelo lexikulu xa ntshikelelo wo tlula mpimo wa le ndzeni. Ku tima hiku kongoma endzhaku ka sintering swiendla ku hambana lokukulu ka mahiselo exikarhi ka PTFE matrix na glass fibre framework, leswi humesaka ntshikelelo wa xihatla wa shrinkage xikan’we naku endla ti fine cracks hiku olova.

Leyara yale henhla yihunguteka no tiya hiku hatlisa loko leyara yale ndzeni yitshama yirikarhi yi andlariwile, leswi endlaka xiyimo xa thermal stress xa outer tension na inner compression, leswi hiku kongoma swivanga tape ku pandzeka.

Nkucetelo eka Dimensional Stability  Ku kufumela hiku hatlisa swi cinca nhlohlorhi ya crystallization kuya eka mahiselo yale hansi naswona swihunguta crystallinity na xivumbeko xa crystal lexinga helelangiki. Thepi yitshama yiri eka xiyimo lexinga ringaniseriwangiki xa ayisi endzhaku ko tima. Secondary crystallization na post-shrinkage swinga humelela ehansi ka ku cinca ka mahiselo loku landzelaka, leswi yisaka eka ku hambuka ka dimensional hakatsongotsongo.

Nkucetelo eka Matirhelo ya Adhesive  Ku kufumela hiku hatlisa swi sivela cross-linking leyi heleleke ya ti adhesive layers. Xinamarheti xi titimela loko xinga se vumba network leyi heleleke ya cross-linked, leswi endlaka leswaku kuhunguteka matimba ya bonding xikan’we naku tiya ka mahiselo.

Ehansi ka ku phindha-phindha ku rhendzeleka ka xirhami na ku hisa, ku hambana ka ku andzisiwa ka mahiselo exikarhi ka PTFE substrate na leyara yo namarhela swi humesa ntshikelelo wa interfacial, ku hatlisisa ku dyuhala ka namarheta na ku debonding, naswona swi tsanisa swinene ku tiya ka viscosity.

IV. Ku pimanisiwa ka Maendlelo yo hambana-hambana yo kufumeta

 

Hiku angarhela, ku kufumela hiku nonoka nakufana i nsinya wa xisekelo wa vutshunguri bya le ndzhaku ka ku horisa ka tithepi ta PTFE ta mahiselo yale henhla. Switsundzuxiwa ku amukela in-furnace natural cooling endzhaku ka sintering, naswona humesa ti tapes ta moya ku kufumela kuya eka mahiselo ya kamara endzhaku kaloko mahiselo ya wile ehansi ka 150–200°C. Ku kufumela lokunga ringaniki hinkarhi wa vuhumelerisi swita endla leswaku kuva na slackness naswona ekuheteleleni swi onha khwalithi ya swihumelerisiwa.

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

Loko u lava ku tiva vuxokoxoko bya tipharamitha, swiyimo swa xikombelo na swintshuxo leswi endleriweke ku tirhisiwa ka switirhisiwa swa hina swa nxaxamelo lowu heleleke ku katsa na lapi ra mahiselo ya le henhla ya PTFE, thepi ya mahiselo ya le henhla ya PTFE, bandhi 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 hi tihlanganisa:

·  Tatana Guo: +86 18944819998

·  Nkulukumba Liu: +86 13705266308

Minkarhi hinkwayo hi seketela nsinya wa vukorhokeri bya vutshila na vutshembeki, naswona hi mbilu hinkwayo hi ku nyika swintshuxo swa xiyimo xin’we na vukorhokeri byo anakanyela.