Basic Process Flow for Impregnating Fiberglass Fabric with PTFE Emulsion

Jiangsu Aokai New Materials, katswiri wopanga nsalu za PTFE zotentha kwambiri, amapereka chidziwitso chonse. The ndondomeko impregnating fiberglass nsalu ndi PTFE kubalalitsidwa ndi pachimake teknoloji kuti wogawana odula ndi sinter polytetrafluoroethylene pa fiberglass gawo lapansi, n'kupanga gulu zinthu zomwe zili ndi kukana kutentha, kutchinjiriza magetsi ndi ntchito sanali ndodo. Zogulitsa zoterezi zimagwiritsidwa ntchito kwambiri muzitsulo zokhala ndi mkuwa zokhala ndi mkuwa, malamba onyamula osagwira ndodo, zipangizo zamapangidwe ndi madera ena.

Ndondomeko yonseyi ili ndi masitepe asanu ndi awiri monga awa:

1. Fiberglass Fabric Pretreatment (Dewaxing / Desizing)

Ili ndiye gawo lofunikira kwambiri pakulandila chithandizo. Chopangira nsalu (makamaka sera ya parafini, zotumphukira za wowuma) zimakutidwa pamizere ya fiberglass panthawi yoluka; Kuchotsa kosakwanira kudzasokoneza kwambiri mgwirizano wapakati pakati pa PTFE ndi ulusi wagalasi.

· Njira yayikulu yochizira: Nsaluyo imadutsa mosalekeza mung'anjo yotentha kwambiri kuti iwonongeke pa 350 ~ 400 ° C, ikutulutsa oxidizing ndikuwola ma organic sizing agents.

Kusamalira motsatira : Nsalu yothira phula imazizidwa pansi, nthawi zina imachapidwa ndi madzi aukhondo kapena zosungunulira zamankhwala kuti zichotse phulusa lotsala, kenako zowumitsidwa kuti zipeze nsalu zoyera zopanda kanthu zokonzeka kuimitsidwa.

2. PTFE Emulsion Mapangidwe

· Zopangira: Kumwazika kwa PTFE kokhazikika komwe kumakhala kolimba pafupifupi 60%.

Njira Yosakaniza : Chepetsani kumwazikana kwa masheya ndi madzi opangidwa ndi deionized mpaka mulingo womwe mukufuna (40% -55%) potengera kutsitsa kwa utomoni ndi kukhuthala kwa kulowetsedwa. surfactant yoyenera imawonjezedwa kuti ipititse patsogolo ntchito yonyowa pa fiberglass; thickener akhoza kuphatikizidwa kuti asinthe mamasukidwe akayendedwe pakafunika.

3. Kukhala ndi mimba

Cholinga chachikulu ndikulowa kwathunthu kwa PTFE emulsion mu mitolo ya fiber ndi interstices ya nsalu yolukidwa.

1. Dip-Squeeze Method (Ambiri ambiri anatengera): Nsalu motsogozedwa kudzera kumizidwa odzigudubuza mokwanira zilowerere mu thanki emulsion, ndiye amadutsa peyala ya Finyani odzigudubuza. Kulemera kwa ❖ kuyanika kumayendetsedwa ndi kusintha kuthamanga kwa nip kuti mutulutse emulsion yambiri ndikugawa utomoni mofanana.

2. Kupaka kwa Doctor Blade: Emulsion imafalikira pamwamba pa nsalu pogwiritsa ntchito masamba achitsulo, oyenera kufalikira kwamphamvu kwambiri.

4. Kuyanika

Nsalu yothiridwa imalowa mu uvuni wowumitsa wotentha kwambiri womwe umagwira ntchito pa 100 ~ 150 ° C.

• Cholinga: Pang'onopang'ono sungunuke madzi ndi zowonjezera pang'ono, ndikupanga filimu yowuma yopanda phokoso ya tinthu tating'onoting'ono ta PTFE pa fiber.

· Chidziwitso chowongolera kutentha: Kutentha kwambiri kumapangitsa filimu yowundana kwambiri, ndikutsekera chinyezi chamkati chomwe chimatuluka nthunzi ndikupanga mapini ndi matuza.

5. Sintering (Thermal Curing)

Nsalu zouma nthawi yomweyo zimadyetsedwa mu ng'anjo yotentha kwambiri yotenthetsera kutentha kwa 360 ~ 390 ° C (mpaka 400 ° C kwa magiredi ena).

· Njira: PTFE ndi polima thermoplastic. Pa kutentha pamwamba pa malo ake osungunuka (327 ° C), PTFE particles amasungunuka, kutuluka ndi kutuluka kuti apange filimu yosalekeza, kukwaniritsa makina osakanikirana ndi kumamatira ndi magalasi a fiberglass.

· Gawo la magawo: Gawo la sintering limagawidwa m'magawo otenthetsera, kutentha kosalekeza ndi magawo ozizira kuti zitsimikizire kusakanikirana kwa tinthu popanda kuwonongeka kwa kutentha.

6. Mipikisano Cycle Impregnation & Sintering

Kuzungulira kumodzi kwa impregnation-sintering kumangopanga zokutira zoonda kwambiri zomwe zimakhala ndi vuto la mapini. Kuti mufikire makulidwe a ❖ kuyanika ndi utomoni wokhutira (mwachitsanzo, 45% -65% kukweza kwa utomoni pazigawo zazikulu zazitsulo zokhala ndi mkuwa), ndondomeko yonse ya impregnation → kuyanika → sintering  imabwerezedwa 2 mpaka 4 kapena kuposerapo. Kuzungulira kulikonse kumadzaza mipata ya ulusi ndikuwonjezera makulidwe ake, kenako ndikupanga pepala lowundana lopanda mapiko.

7. Pambuyo pa Chithandizo & Kupukuta

1. Kusintha kwapamtunda: Pambuyo podutsa sintering yomaliza, chithandizo cha corona kapena mankhwala a sodium-naphthalene etching angagwiritsidwe ntchito kuti apititse patsogolo kumamatira pamwamba popanda kuwononga gawo lapansi, ndikupangitsanso kuphimba kwa mkuwa kapena kuyanika kwachiwiri.

2. Kudula m'mphepete & kupiringa: M'mphepete mwa nsalu amakonzedwa mowongoka, kenako nsalu yomalizidwayo imavulazidwa bwino ndi makina onyamula.

3. Kuyang'anira Ubwino: Kuyesa kwathunthu kwazinthu zomwe zamalizidwa kuphatikiza kulemera kwake, makulidwe, kulimba kwamphamvu, mphamvu ya peel, ma dielectric osasunthika komanso zolakwika zowonekera.

Core Process Control Points

Zofunikira zomwe zimayang'anira mtundu wazinthu zomwe zamalizidwa ndi izi: kutulutsa kwathunthu / kunyowetsa, kunyowetsa emulsion, kuyanika pang'onopang'ono kutentha, kukhazikika kwa kutentha kwa sintering, komanso kachulukidwe wa zokutira pambuyo pa kachulukidwe kambiri.

Zomwe zili pamwambapa zaukadaulo zimaperekedwa ndi Malingaliro a kampani Jiangsu Aokai New Materials Technology Co., Ltd.

Ngati mukufuna kudziwa mwatsatanetsatane, zochitika ntchito ndi mayankho makonda athu zonse katundu katundu kuphatikizapo PTFE mkulu-kutentha nsalu, PTFE mkulu kutentha zomatira tepi, PTFE mkulu-kutentha mauna lamba, chosakanizika kutentha atolankhani lamba, single-mbali PTFE nsalu, apamwamba kutentha zosagwira magalasi, kukhudzana ndi magalasi zosamva kutentha, chonde kukhudzana ndi magalasi osamva kutentha ndi conveyor.

· Mafoni a Utumiki: Bambo Guo +86 18944819998

· Nambala yafoni yautumiki: Bambo Liu +86 13705266308

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