Ndlela leyi ku hunguteka ka ku hisa ka fiberglass ku khumbaka ha yona ku tiya ka dimensional ya thepi ya PTFE

A Thepi ya PTFE leyi hungutaka, yi goveka, kumbe ku soholota loko yi tirhisiwa i ku tsandzeka loku tolovelekeke ka nsimu. Xivangelo xa rimitsu xitala ku landzelerisa eka parameter yin’we: thermal shrinkage rate ya fiberglass substrate.

Hi nkarhi wa PTFE sintering eka 360-400°C na adhesive curing eka 150-200°C, the lapi ra fiberglass ri hundza eka ku andzisiwa ka mahiselo naswona, xa nkoka swinene, ku hunguteka loku nga hundzukiki kusuka eka ntshikelelo lowu saleke wa ku luka. Loko ntshikelelo lowu wunga herisiwi loko kungase peta, wu hundzuka xihoxo lexi fihliweke – leswi endlaka leswaku tape yihunguteka, yi goveka, kumbe ku delaminate loko yi hisiwa.

Aokai PTFE yi tirhisa ti fiberglass substrates leti vekiweke hiku hisa hiku hetiseka ku herisa xiphiqo lexi. Xihloko lexi xi hlamusela rimitsu ra xivangelo xa ku hunguteka ka mahiselo, ku khumbeka ka kona eka xiteji xin’wana na xin’wana xa ku lulamisa, na xitshunxo xa nkoka: lapi leri vekiweke ka ha ri emahlweni ro hisa leri nga na ku hunguteka ka <0.5% eka 400°C.

Xivangelo xa Rimitsu – Ntshikelelo lowu saleke kusuka eka ku Lukiwa

Kuhunguteka ka mahiselo hi xisekelo swisungula kusuka eka ntshikelelo wa masalela yale ndzeni lowu hlengeletiweke hinkarhi wa ku dirowa ka fibre ya nghilazi xikan’we naku luka malapi. Lapi ra fiberglass leri nga riki na ku vekiwa ka ku hisa loku heleleke ri ta hundza eka ku hunguteka loku nga hundzukiki loko se ri hisiwa ehenhla ka mpimo wa rona wo humesa ntshikelelo (ku hunguteka loku hlamarisaka ku sungula ehenhla ka 300°C).

Ntshikelelo wihi na wihi wa ku hunguteka lowu nga humesiwiki hi ku helela kumbe lowu nga siveleriwangiki wu hundzuka xiphiqo xa nkoka lexi fihliweke lexi vangaka swipimelo swa thepi leswi nga tshamisekangiki. Ntshikelelo lowu wu 'locked' eka xivumbeko xa lapi hinkarhi wa ku luka naswona wu humesiwa ntsena loko wu hisiwa kuya eka mahiselo lawa ya ringaneleke.

Vuyelo Hi Nkarhi Wa PTFE Sintering – Xiyenge xa ​​Nkoka

Mahiselo ya PTFE sintering ya fika eka 360-400°C, ku tlula swinene mahiselo yosungula ya fiberglass thermal shrinkage, leswi endlaka leswaku xiteji lexi xiva xivangelo xa xiboho eka matirhelo ya dimensional.

1. Locked shrinkage stress yi tumbuluxa swihoxo swa dimensional leswi fihliweke

Loko ri endliwa ehansi ka tension yale hansi, lapi ra fiberglass rihunguteka hiku ntshunxeka naswona swinene, leswi endlaka leswaku kuva na swipimelo leswinga ringaniki na ku leha na ku anama. Loko ku endliwa tension yo tlula mpimo ku sivela ku hunguteka, ti fibre ta nghilazi ti lehisiwa hi nkani. Eka kwalomu ka 380°C, PTFE leyi n’okiweke yi nghena naswona yi phutsela ti fibre leti andlariweke; endzhaku ko kufumela naku vumba, latent shrinkage tendency yi pfaleriwile hi laha kunga heriki endzeni ka substrate tani hi massive residual tensile stress. Loko tape yitlhele yi hisiwa eka maendlelo yale ndzhaku, ntshikelelo lowu wa masalela wu hlohletela kuhunguteka ka substrate naswona hiku kongoma wu onha ku tiya ka dimensional.

2. Ku nga ringani ka substrate flatness swi onha ku fana ka coating

Tihakelo ta kuhunguteka ka mahiselo letinga fambelaniki eka tindzhawu tohambana hambana ta malapi (xikombiso, edge vs. central area) hinkarhi wa sintering ti hlohletela ku cinca cinca kukatsa na makumu ya wavy, margins ya cupped, na surface bulges . Vuandlalo bya substrate lebyi nga ringaniki byi yisa eka ku enta ka adhesive coating lokunga ringaniki eka maendlelo lawa ya landzelaka, hiku olova swivanga ti air bubbles kumbe ku namarhela lokunga kahle hinkarhi wa lamination, naswona hindlela yoka yinga kongomanga swi onha dimensional na functional stability ya ti tapes leti hetiweke.

Ku khumbeka hi nkarhi wa ku horisa hi ku namarhela – Ku hunguta ntshikelelo wa vumbirhi

Maendlelo ya swinamarheti (swinamarheti leswi twaka ntshikelelo wa silicone, swinamarheti swa acrylic, na swin’wana) swi hola eka 150-200°C. Mahiselo lawa yale hansi kutlula sintering range kambe yaringanerile kuva ya endla leswaku residual locked stress yi tirha endzeni ka substrate, leswi tisaka switandzhaku swotala swo biha.

1. Ku hunguteka ka vumbirhi ku vanga swihoxo swa le henhla na ku hambuka ka dimensional

Loko u nghena eka curing oven, residual shrinkage stress endzeni ka substrate ya humesa naswona yivanga tape shrinkage leyi pimiwaka. Leswi swi yisa eka:

• Ku hungutiwa ka ku anama ku tlula mpimo

• Micro-cracks, xivumbeko xa madzovo ya orenji, kumbe ku tsandzeka ka cohesive eka vuandlalo bya namarheta (tani hileswi ku hunguteka ku humelelaka hi nkarhi wun’we na ku horisiwa) .

• Ku cinca cinca ka longitudinal eka vukulu bya adhesive na ku rhurhumela ka ti release liners (hikwalaho ka ku nga fambelani exikarhi ka rivilo ra ku hunguteka ka lapi na coating roller linear velocity) .

2. Thermal curling yi herisa ku kongoma ka ku lulamisa

Substrate layer yi actively contract ehansi ka heated residual stress, kasi fully cured adhesive layer yina coefficient yohambana ya thermal expansion, leswi endlaka leswaku kuva na ku nga fambelani lokukulu ka stress exikarhi ka ti layers timbirhi. Thepi yi goveka hiku hatlisa loko yi tshoveriwile kusuka eka ti release liners kutani yi hlangana na kuhisa hinkarhi wa kutirhisiwa – yi tsandzeka ku veka flat naswona yi lahlekeriwa hi dimensional controllability xikan’we naku tirha.

Ku Humesiwa ka Ntshikelelo loku Yaka emahlweni Hi Nkarhi wa Matirhiselo yo Hetelela – Ku nga tshamiseki ka Nkarhi wo Leha

Ntshikelelo wa shrinkage lowu saleke lowunga herisiwangiki hiku hetiseka hinkarhi wa adhesive curing wutshama wuri kona kuya eka ku cheriwa ka xitirhisiwa lexi hetiweke. Ehansi ka mahiselo yale henhla ya masking, thermal lamination, kumbe swiyimo swa thermal cycling (xikombiso, 260°C powder coating), tape yihunguteka hakatsongotsongo naswona yitshama yirikarhi yitshama.

Switandzhaku:

• Mindzilakano ya masking leyi cinciweke (milayeni ya seal ya famba) .

• Ku tlakuka ka makumu kumbe ku tsandzeka ka ku namarhela

• Ku lahlekeriwa loku heleleke ka ku tshamiseka ka dimensional

Leswi hi swona swiendlaka leswaku ti tape tin’wana ti tsandzeka ensin’wini hambi endzhaku ko hundza eka ku kamberiwa kosungula – ntshikelelo lowu fihliweke wu humesiwa hiku nonoka hiku famba ka nkarhi xikan’we naku hisa.

Ntlhantlho wa Nkoka – Herisa Ku Pfuxetiwa Loko Unga se Sintering

Ku endla ti dimensionally stable PTFE adhesive tapes, ku sindzisiwa ka tension stretching hinkarhi wa ku lulamisiwa aswinga lulamisi timhaka ta shrinkage hi xisekelo. Ku susiwa loku heleleke ka fiberglass shrinkage swifanele ku fikeleriwa eka xihlovo.

1. Ndlela ya Aokai PTFE

1. Tirhisa lapi ra le hansi ra fiberglass leri vekiweke hiku hisa hiku hetiseka (pre-shrunk) – thermal shrinkage rate leyi lawuriwaka swinene ehansi ka 0.5% ehansi ka swiyimo swa xikambelo swa 400°C × 10 wa timinete (swipimelo swo tiya leswi kumekaka eka tigiredi ta premium).

2. Engeta endlelo ra mahiselo yale henhla ya pre-firing loko kungase nghenisiwa PTFE impregnation kumbe ku peta – ku pfumelela lapi ra fiberglass kuva ri hetisisa free shrinkage naswona ri humesa hiku hetiseka ntshikelelo hinkwawo wa le ndzeni loko kungase nghena eka ndzhawu ya sintering.

2. Vuyelo bya kona

Loko fiberglass fabric’s thermal shrinkage rate yihungutiwile, ku hambana ka dimensional hinkarhi wa sintering leyi landzelaka na adhesive curing swita huma ntsena kusuka eka thermal expansion xikan’we naku hunguteka ka resin na adhesive layers – na vukulu lebyintsongo swinene kutlula residual stress-driven shrinkage. Leswi hi xisekelo swi tiyisekisa:

• Ku tshamiseka ka dimension (ku leha na ku anama) .

• Ku rhetela ka vuandlalo

• Ku tiya ka kuhisa xikan’we naku tshembheka ka nkarhi woleha

Aokai PTFE yi hlawula ntsena ti fiberglass substrates leti vekiweke hiku hisa hiku hetiseka letingana ti shrinkage rates leti tsariweke. Hi nga nyika datha ya xikambelo hi swilaveko swa muxavi.

Nkatsakanyo – Nsinya wa nawu wa le mahlweni ka ku hunguteka

Aokai PTFE yi ringanyeta fiberglass leyi vekiweke ka ha ri emahlweni hi ku hisa leyi nga na shrinkage <0.5% eka switirhisiwa hinkwaswo swa dimension-critical. Eka vaxavi lava lavaka ti dimensions ta ultra-stable, hi nyika ti premium grades letingana shrinkage <0.3% eka 400°C.

Nhundzu leyi ya xithekiniki yi nyikiwa hi Jiangsu Aokai Thekinoloji ya Switirhisiwa Leswintshwa Co., Ltd.

Loko u lava swihlawulekisi leswi nga ni vuxokoxoko, swiyimo swa xikombelo ni swintshuxo leswi endleriweke ku tirhisiwa hi ku landza swilaveko swa wena swa layini ya hina leyi heleleke ya swilo ku katsa ni malapi ya mahiselo ya le henhla ya PTFE, tithepi to namarhela ta mahiselo ya le henhla ya PTFE, mabandhi yo fambisa ya mesh ya PTFE, mabandhi ya muchini wo fuwa lama nga riki na swirhabyani, lapi leri funengetiweke hi tlhelo rin’we ra PTFE, mabandhi yo fambisa lama nga hisiki na malapi ya fiberglass ya mahiselo ya le henhla, hi kombela u hi tihlanganisa hi ku tirhisa tichannel leti nga laha hansi:

• Nkulukumba Guo: +86 18944819998

• Nkulukumba Liu: +86 13705266308

Hi seketela mimpimanyeto ya vukorhokeri ya vutshila na vutshembeki, hi tinyiketerile ku ku nyika swintshuxo swa hinkwaswo eka xin’we leswi endleriweke wena na nseketelo wa vukheta endzhaku ka ku xavisiwa!