Ukuthi Isilinganiso Sokunyakaziswa Kwe-Solvent Siyithinta Kanjani Ikhwalithi Ye-PTFE Yokumboza Tape

Ekukhiqizeni kwe Itheyiphu ye-PTFE yokushisa okuphezulu , okunamathelayo okuzwela ukucindezela kwe-silicone kusetshenziswa njengesixazululo esisekelwe ku-solvent. Njengoba itheyiphu eboshwe ihamba kuhhavini womisa, i-solvent iyahwamuka, ishiye ungqimba oluqinile lokunamathela. Izinga okwenzeka ngalo lokhu - izinga lokuncibilika kwe-solvent - liyipharamitha yenqubo eyinhloko enquma ukuthi indawo yokugcina yokunamathela ibushelelezi, ayinasici, futhi iwugqinsi ngokuqhubekayo, noma imbozwe kumaphinifa, ama-craters, nemigqa.

I-Aokai PTFE inezinqubo zokumboza ezithuthukisiwe kuzo zonke izinkulungwane zokugijima kokukhiqiza. Lo mhlahlandlela uchaza ukuthi izinga lokuguquguquka likuthinta kanjani izinga, ukwakheka kwephinifa, kanye nokukhubazeka kwe-crater - nokuthi ungayilawula kanjani ngeteyipu yekhwalithi ephezulu ye-PTFE.

Ukuthi Izinga Lokuguquguquka Likuthinta Kanjani Ukulinganisa - I-Viscosity Trade-Off

Ukulinganisa ikhono lefilimu enamathelayo emanzi ukuze kuqedwe imigqa yokumboza, imigqa enqamulayo, nokuthungwa kwekhasi eliwolintshi, okwenza indawo ebushelelezi. Amandla okushayela ukushuba kwendawo; ukumelana yi-viscosity.

1. Ngokusheshisa kakhulu - ukucwecwa kwesikhumba kuyeka ukukhuphuka

Uma i-solvent ihwamuka ngokushesha kakhulu, ukugxila kwe-solvent endaweni yehla ngokushesha. I-Silicone PSA (isixazululo se-polysiloxane enesisindo esikhulu samangqamuzana) izwela kakhulu ukugxilisa ingqondo. I-viscosity ye-surface layer ikhuphuka ngokuqhubekayo - ize yakhe 'isikhumba' esiphezulu 'sesikhumba' cishe ngaso leso sikhathi.

Lesi sikhumba sivala ingcina engaphansi engakapholi. I-adhesive ngeke isakwazi ukugeleza ukuze ikhiphe imigqa noma izimpawu ze-blade. Ukuthungwa okungajwayelekile okukhiqizwa ngesikhathi sokumboza kulungiswe unomphela.

2. Ukunensa kakhulu - ukuwohloka nokumanzisa

Uma i-solvent ishintshashintsha kancane kakhulu, ungqimba olunamathelayo luhlala luwuketshezi olune-viscosity ephansi isikhathi eside kakhulu. Nakuba lokhu kuvumela isikhathi sokulinganisa, amandla adonsela phansi abangela:

• I-Sagging (i-adhesive igijima iye phansi ezindaweni eziqondile)

• Imiphetho ewugqinsi (amachibi anamathelayo emaphethelweni wendawo eboshwe)

• Ukumanzisa – kuma-substrate e-PTFE anamandla aphansi (i-critical surface tension kuphela 18-20 mN/m), ukumanzisa isikhathi eside empeleni kungabangela okunamathelayo ukuthi inciphe futhi isuke ku-substrate, konakalise ukushelela kwendawo.

Ukuthi Izinga Lokushintshashintsha Libanga Kanjani Ama-Pinholes

Ama-Pinholes ayizimbobo ezincane ngongqimba olunamathelayo. Akheka lapho i-solvent noma amabhamuza omoya evaleleka futhi eqhuma endaweni eqinile ngaphambi kokuba okunamathelayo kuphinde kugeleze.

1. Indlela 1 – isincibilikisi esibilayo sivaleleke ngaphansi kwesikhumba

Lapho itheyiphu eboshiwe ingena kuhhavini wokomisa, ukukhuphuka kwezinga lokushisa okubukhali kuhlanganiswe nokushintshashintsha kwe-solvent esheshayo kwelapha ifilimu kuqala. I-solvent evaleleke ngaphakathi kwesendlalelo ihwamuka ngamandla, yenze amabhamuza. Uma ukucindezela kwebhamuza kwangaphakathi kwephula isikhumba esingaphezulu esiqinile, ifilimu ewuketshezi edabukile ayikwazi ukugeleza futhi iphole - ishiya amaphinifa ahlala njalo noma imigodi efana nentaba-mlilo.

2. Indlela 2 - amabhamuza awakwazi ukuphunyuka

Amabhamuza omoya amancane ahlala egxilile ngesikhathi sokumboza kanye nokudla okunamathelayo. Zidinga isikhathi esanele sokuntanta phezulu, ukuphuka, nokuphulukisa ku-viscosity ephansi. Uma ingaphezulu likhuphuka ngokushesha ngenxa yokoma ngokushesha, amabhamuza awakwazi ukuphunyuka futhi agxiliswe njengezimbobo zokuphina.

3. Indlela 3 – ukungeniswa kahle kwemigodi emincane

I-volatilization yangaphambi kwesikhathi i-spikes i-adhesive viscosity ngokucijile, ivimbela isisombululo sekhono lokugcwalisa kancane kancane imigodi emincane nokuxosha umoya ophakathi kobuso. Lokhu kubangela ukulimala okuminyene kokumanzisa okufana nembobo ngemva kokomiswa.

Ukuthi Izinga Lokushintshashintsha Liyibangela Kanjani Ama-craters (ama-Dimples)

Ama-craters amancane, ama-depressions ayindilinga endaweni enamathelayo, ahlukile kumaphinifa. Zibangelwa ukungalingani kwengcindezi yendawo.

1. Indlela 1 – amaconsi amanzi ajiyile

Ukushiswa kwe-solvent okusheshayo kudonsa ukushisa okukhulu kokuhwamuka, kupholise kakhulu ifilimu emanzi nendawo engaphansi. Uma izinga lokushisa lehla ngaphansi kwendawo ezungezile yamazolo, umhwamuko wamanzi osemoyeni ujiya ube amaconsi amancane efilimu emanzi.

• Ukuqina kwamanzi ebusweni: ~ 72 mN/m

• Ukuqina kobuso bokunamathela kwe-silicone: 20-25 mN/m

Lo mehluko omkhulu udala i-gradient ye-top tension gradient edonsa okunamathelayo okuzungezile ukuthi kunciphe kumaconsi, kushiye ama-craters ngemva kokoma.

2. Indlela 2 - ama-craters abangelwa ukungcola

Ukungcola okunomfutho ophansi (amaconsi amancane e-silicone, amafutha) akhona ngokungenakugwenywa kokunamathelayo noma endaweni yokusebenza. Lokhu kungcola kwakha izikhungo ze-low-surface-tension kwifilimu emanzi. Ngaphansi komphumela we-Marangoni, ukunamathela kugeleza ngaphandle kusuka kulezi zikhungo, kudala ukucindezelwa.

• I-volatilization emaphakathi ivumela ama-depressions ukuthi azipholise ngokwawo nge-adhesive backflow.

• Ukuvuthwa okushesha kakhulu kuncisha uketshezi olumanzi ngaphambi kokuphola - ama-craters akhiywa unomphela.

3. Indlela 3 – ukumanzisa ama-craters kusuka ekumanziseni okunganele

Ama-substrates e-PTFE anokucindezeleka okuphezulu okungaphezulu kuka-18–20 mN/m kuphela – khona kanye embundwini wokumanzisa okunokwenzeka. I-adhesive ye-silicone idinga iwindi elanele eline-viscosity ephansi ukuze isakaze futhi imanzise ingaphezulu nge-thermodynamically. Uma isincibilikisi sishibilika ngokushesha kakhulu, ingcina ilahlekelwa uketshezi ngaphambi kokumanzisa ngokuphelele. Ngesikhathi somiswa, ukuncipha kwevolumu kanye nokungezwani kwendawo kuphoqa ukunamathela ukuthi kunciphe, kushiye ama-micro-craters ezindaweni ezimanziswe kabi - abonakale njengendawo ephawulwe uphawu.

Izixazululo - Ungalawula Kanjani Ukuguquguquka Kwezingubo Ezingenasici

Isu elifanele le-solvent volatilization lisebenzisa ibhalansi yegradient :

1. Indlela yokomisa enezigaba ezimbili

2. Izinhlelo ze-solvent ezixubile

Sebenzisa inhlanganisela yezincibilikisi ezinamaphoyinti abilayo ahlukene:

• Izinyibilikisi ezinhle ezibilayo, ezihwamuka kancane (i-toluene, ixylene, noma ama-aromatics/esters abilayo) - ingxenye eyinhloko - iqinisekisa ukuncibilika kanye nesikhathi esanele sokukala.

• Inani elincane lezincibilikisi ezomisa ngokushesha ezimaphakathi/eziphansi - zihlanganiswe ukuze kulungiswe isivinini sokumisa sisonke.

3. Ukulawula izinga lokushisa kwe-gradient kuhhavini omisiwe

• Izinga lokushisa eliphansi ekungeneni - ukuvuthwa kancane kokuqala kokulinganisa.

• Izinga lokushisa eliphakathi nendawo emaphakathi - ukomiswa okulawulwayo.

• Izinga lokushisa eliphakeme ekuphumeni - ukubunjwa okusheshayo kokugcina.

Gwema ukushisa okucijile endaweni yokungena - lokhu kubangela ukukhishwa kwesikhumba ngokushesha.

4. Izinyathelo ezisizayo

• Lawula umswakama we-ambient - vimbela ukufiphala kwamanzi kufilimu emanzi.

• Ukwelashwa kwe-corona eku-inthanethi kwe-substrate ye-PTFE - kuphakamisa amandla angaphezulu, kuthuthukisa ukumanzisa, kunciphisa ama-craters okumanzisa.

Isifinyezo - Amaphuzu Abalulekile Okulawula Ikhwalithi Yokumboza

I-Aokai PTFE ilungiselela amapharamitha wokunameka – inhlanganisela ye-solvent, iphrofayili yokomisa, nokwelashwa kwe-substrate kusengaphambili – ukukhiqiza itheyiphu ye-PTFE enezendlalelo ezinamathelayo ezibushelelezi, ezingenasici. Xhumana nathi ukuze uthole ukusekelwa kwenqubo noma ukucaciswa kokugqoka okungokwezifiso.

Okuqukethwe okungenhla kunikezwa ngu I-Jiangsu Aokai New Materials Technology Co., Ltd.

Uma ufisa ukufunda kabanzi mayelana nokucaciswa okuningiliziwe, izimo zohlelo lokusebenza nezixazululo ezenziwe ngokwezifiso zohlu oluphelele lomkhiqizo wethu, okuhlanganisa izindwangu ze-PTFE ezishisa kakhulu, amakhasethi e-PTFE, amabhande anezikhala we-PTFE, amabhande omshini wokubopha angenamthungo, indwangu ye-PTFE enohlangothi olulodwa, amabhande angamelana nokushisa okuphezulu, namabhande avikela ingilazi aphezulu:

• UMnu. Guo: +86 18944819998

• UMnu. Liu: +86 13705266308

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