I-Solder Creeping Izimbangela Nezixazululo ze-PTFE High-Temperature Tape

Njengomkhiqizi womthombo ochwepheshe we-PTFE indwangu eshisa kakhulu, i-Jiangsu Aokai New Materials yabelana ngomkhakha wobungcweti. ukuqonda.Ku -PCB umoya oshisayo wokulinganisa i-solder, i-golide plating kanye nezinqubo zegolide zokucwiliswa, i-solder enwabuzelayo emaphethelweni avikelayo etheyiphu yokushisa ephezulu ye-PTFE ibangelwa ikakhulukazi umthelela ohlangene wokwehluleka ngokomzimba kwetheyiphu kanye nezindawo zenqubo ezeqisayo.

I. Izimbangela Zezilwane Ezihuquzelayo

I-Edge warping ye-PTFE high-temperature tape ukwakha izikhala Ngesikhathi sokukhiqizwa okuphezulu kwezinga lokushisa, amandla okunamathela we-tape ayancipha njengoba izinga lokushisa likhuphuka. Lapho ukunamathela kunganele ukumelana nokucindezeleka okushisayo, imiphetho ye-tape izojika kancane futhi yenze izikhala ze-capillary, okuvumela i-solder ye-liquid ukuthi ingene ngaphakathi.

Umphumela wokonakala kanye nokunqwabelana kwedamu le-solder I-Solder ivamise ukunyonyoba ibheke ezindaweni ezinokushisa okuphezulu ngokomzimba. Lapho indawo evikelekile isezingeni lokushisa eliphakeme ngokuqhathaniswa, i-solder ewuketshezi ikhuphuka ikhuphukele phezulu eduze kwezikhala zetheyiphu ku-wicking evamile. umphumela.Ngaphezu kwalokho, itheyiphu ye-PTFE ewugqinsi kakhulu izokwakha izinyathelo emaphethelweni, okubangela ukunqwabelana kwe-solder yakhe idamu le-solder, okuqhubekisela phambili ukubhebhetheka kwezilwanyana ezinwabuzelayo.

Ikhwalithi yezinto ezingafani zetheyiphu ye-PTFE yokushisa okuphezulu Ingqimba enamathelayo yetheyiphu ye-PTFE ephansi ijwayele ukugeleza, ukonakala kanye nezinsalela zokunamathela emazingeni okushisa aphezulu. Akukona nje ukulimaza umgoqo wokuvikela, kodwa futhi kungcolisa ama-pads, okwandisa kakhulu ingozi ye-solder creeping.

Izinto ezingcolisayo ezidlula itheyiphu ye-PTFE Ngisho noma itheyiphu iqinile, iyaqhuma futhi ifafaze ubuhlalu be-solder obusele ku-PCB vias, noma izinhlayiya ezincane ze-solder ezikhiqizwe ukuhwamuka kwe-flux ngesikhathi sokuphinda kufakwe i-solder, zingangena noma zeqe indawo eyisivikelo futhi zidale ukungcoliswa.

I-lamination engafanele kanye nokuguquguquka kwenqubo Ukwehluleka ukuhlanza indawo evikelayo noma ukucindezela okunganele ngesikhathi sokufaka isicelo kuzoshiya izikhala zokungena kwe-solder.Ukushisa okuphuthumayo okukhuphuka ngokweqile ngesikhathi sokuthengiswa kwe-reflow kwandisa kakhulu uketshezi lwe-solder, okwenza kube lula ukweqa umngcele we-PTFE tape.

Ukumanzisa okuphezulu kwezindawo ezicwebezelayo zegolide okwenza inkinga ibe ngaphezulu kwegolide egqitshwe ngegolide kanye nokucwiliswa kuveza ukumanzisa kwe-solder okuhle kakhulu. Uma i-solder ithinta indawo yegolide, isakazeka ngokushesha emaphethelweni etheyiphu, okuholela ezinhlobonhlobo ezinwabuzelayo ezinkulu kune-OSP kanye nezinqubo ezijwayelekile zokulinganisa isolder komoya oshisayo. Amaphutha afana nezimbobo zegolide zengqimba kanye nokugqwala kwe-nickel kuzodala ukumanzisa okungavamile kwendawo futhi kuqhubeke kube kubi kakhulu ukukhasa kwe-solder.

II. Izixazululo: Uhlelo Lokusebenza Oluhlelekile Lwetheyiphu Yekhwalithi Ephezulu ye-PTFE

Khetha imikhiqizo efanelekayo futhi ulinganise ukusebenza kwe-lamination Yamukela itheyiphu yezinga eliphezulu ye-PTFE yokushisa ephezulu ngokukhethekile eyenzelwe izinqubo ze-PCB ezisezingeni eliphezulu, enokumelana nezinga lokushisa okungu-250~260 ℃ ukuze uhlangabezane nezidingo zokukhiqiza ezingenamthofu.Hlanza indawo evikelayo kahle nge-isopropanol ngaphambi kokufaka isicelo ukuze uqinisekise ukufaneleka okugcwele ngaphandle kokungqubuzana onqenqemeni noma izikhala. Gqoka amagilavu ​​ngesikhathi sokusebenza ukuze ugweme ukungcoliswa kwamafutha.

Vimbela ukuchaphazeka kobuhlalu ukuze kungabhodloki isivikelo Sebenzisa ifomula yokunamathisela yesoda ecwebezelayo futhi ulungiselele ijika lokushisa lokugeleza kabusha. Ukushisa kwangaphambi kwesikhathi okwanele kugwema ukuhwamuka kwe-solvent enodlame futhi kunciphisa ingcuphe yokuthi ubuhlalu obuncane be-solder bugqekeze isivikelo setheyiphu.

Qinisa ukulawulwa kokuphrinta nokuhlanza okokusebenza Hlanza i-stencil ngemva kokuphrinta njalo kuma-PCB angu-2-3, futhi usebenzise imodi yokuhlanza okomile + i-vacuum yokuhlanza ukuze uvimbele ukunamathisela kwe-solder ukuchaphazela endaweni yetheyiphu.Susa njalo impushana ye-solder esele emshinini wokunyathelisa, amathrekhi okufaka ama-mounter kanye nezinto ezilungiswayo ukuze uqede ukungcoliswa kwesibili.

Ukulawulwa kwekhwalithi okuqinile okungenayo futhi kucutshungulwe ukwenza ukulinganiselwa kwezinto ezibonakalayo Kudinga abahlinzeki be-PCB ukuba banikeze izitifiketi zekhwalithi zokuxhuma ezifanelekayo ukuze kuqinisekiswe i-vias egcwele ngokugcwele futhi kuvimbele ubuhlalu be-solder obufihliwe ukuthi bungeqi i-tape yokuvikela.Hlela ukuhlolwa okungahleliwe kokuthengiselana kwamabhodi anegolide. Uma izinkinga ezifana nongqimba lwegolide elincanyana kanye nokugqwala kwe-nickel kutholakele, vimba imikhiqizo enesici ukugwema ukunwabuleka okunamandla okubangelwa ukusabalala kwe-solder okungavamile.

Yamukela ezinye izinqubo zokunciphisa ukuncika kwetheyiphu Uma umklamo womkhiqizo uvuma, sebenzisa ukwelashwa okukhethiwe kwendawo, okufana nokucwecwa kwegolide kwendawo kuphela kumaphedi kanye nokucutshungulwa kweminwe yegolide. Lokhu kuqeda isidingo sokuvikela onqenqemeni ngetheyiphu ye-PTFE futhi kuxazulule ngokuyisisekelo inkinga ye-solder creeping.

Ukukhetha okunengqondo, i-lamination ejwayelekile kanye nokulawula okugcwele kwenqubo yokuhlanganyela ye-PTFE itheyiphu yokushisa okuphezulu yizihluthulelo eziyinhloko zokuqeda izilwanyana ezinwabuzelayo. Ukuthuthukisa imininingwane yohlelo lokusebenza kungathuthukisa ngempumelelo isivuno sokukhiqiza futhi kwehlise izindleko zokuphinda kusetshenzwe kabusha.

Okuqukethwe okungenhla kobuchwepheshe kunikezwa i- Jiangsu Aokai New Materials Technology Co., Ltd.

Uma udinga imingcele enemininingwane, amakesi ohlelo lokusebenza nezixazululo ezenziwe ngokwezifiso zendwangu ye-PTFE ephezulu lokushisa, itheyiphu ye-PTFE ephezulu, ibhande le-PTFE elinenetha, ibhande lomshini wokuhlanganisa elingenamthungo, indwangu eboshwe ye-PTFE enohlangothi olulodwa, ibhande lokuhambisa elimelana nokushisa okuphezulu nendwangu ye-fiberglass, sicela usithinte:

·  UMnu Guo: +86 18944819998

·  UMnu. Liu: +86 13705266308

Sibambelela kufilosofi yebhizinisi yobungcweti nobuqotho, futhi sinikeza izixazululo ezisekela izimboni ezisebenza endaweni eyodwa kanye nesevisi ecabangelayo yangemva kokuthengisa kumakhasimende omhlaba.