Shafi mara daidaituwa na PTFE yana haifar da streaks, raƙuman ruwa, rawaya, ko rashin daidaituwa mara aiki. Don aikace-aikace kamar bel ɗin rufe zafi, bel ɗin jigilar kaya, da layukan saki, daidaiton sutura yana shafar ingancin samfur da rayuwar sabis kai tsaye.
Me ke haifar da rashin daidaituwa? Amsar ta ta'allaka ne da yankuna hudu: ƙirar shafi, shafi & tsarin sintering, ingancin substrate, da yanayin samarwa.
Aokai PTFE ya inganta waɗannan abubuwan a cikin dubban ayyukan samarwa. Wannan labarin ya bayyana kowane abu da kuma yadda za a sarrafa su don inganci mai kyau, uniform masana'anta mai rufi PTFE.
Rubutun Rubutun - Tushen Dalili na Uniformity
Siffar Ƙirƙira
Madaidaicin Range / Bukatun
Me Yasa Yayi Muhimmanci
Girman barbashi na PTFE
0.15 - 0.35 μm (D50)
Faɗaɗɗen rarrabawa yana lalata shigar substrate da aikin samar da fim
Nauyin kwayoyin halitta & danko
Ma'auni - ba mai girma ko ƙasa ba
Dankowar slurry mara kyau kai tsaye yana hana yaduwa
M abun ciki
60± 2% (na al'ada don impregnation)
Yawan daskararru masu yawa suna haifar da raguwar rashin daidaituwa yayin bushewa
Watsewa
Babu agglomeration
Rarraba dispersibility take kaiwa zuwa gida barbashi gungu da shafi lahani
Abubuwan da ke cika (misali, yumbu foda)
Daidaitawa, da kyau-watse
Yana canza yanayin yanayin ƙasa; filler mara daidaituwa yana haifar da bambancin kauri
Practical tip: Koyaushe gwada kowane tsari na PTFE emulsion ga barbashi size rarraba da danko kafin samar. Canjin 10% na danko na iya canza ɗaukar hoto ta 5-8%.
A dangantaka tsakanin PTFE barbashi size da shafi uniformity ne sau da yawa underestimated. Emulsions tare da D50 da ke ƙasa 0.12 μm yana gudana cikin sauƙi, yana haifar da samuwar ƙwanƙwasa gefuna (mafi kauri a gefuna) yayin bushewa. Emulsions tare da D50 sama da 0.4 μm suna shiga fiberglass mara kyau, wanda ke haifar da porosity na saman da raunin fiber encapsulation. Madaidaicin kewayon (0.18-0.22 μm) yana ba da duka mai kyau shiga da kuma samuwar fim mai santsi. Wani abu mai mahimmanci shine abun ciki na surfactant - da yawa surfactant yana haifar da kumfa yayin da ake tsomawa, haifar da kumfa na iska wanda ya fashe da barin ramuka. Ƙananan surfactant yana kaiwa ga barbashi agglomeration da 'idanun kifi' a cikin shafi na ƙarshe. Don daidaitaccen daidaituwa, yi aiki tare da mai siyar da emulsion guda ɗaya kuma nemi takaddun takaddun tsari wanda ke nuna D50, D90, da kashi na surfactant.
Aokai PTFE yana amfani da emulsion PTFE kawai tare da rarraba girman girman barbashi mai ƙarfi (D50 0.18-0.22 μm, D90 <0.35 μm). Wannan yana tabbatar da daidaitaccen shigar da kuma ƙarewar ƙasa mai santsi a kowane tsari na masana'anta.
Shafi & Tsari Tsari - Matsayin Mahimmanci don Daidaitawa
1. Kwatanta Hanyar Rufi
Hanya
Ka'ida
Matsayin Uniformity
Ribobi
Fursunoni
Dip shafi
Substrate wucewa ta emulsion wanka
Matsakaici
Kyakkyawan gabaɗaya wetting, fiber encapsulation
Dogon tsayin tsayi, gefuna masu kauri, tsakiyar bakin ciki
Ruwan ruwa
Madaidaicin likitan ruwa mita shafi
An fi so - mafi girman daidaituwa
Santsi, mai mai yawa, babu filaye/raguwa
M ga substrate flatness
Fesa shafi
Atomized feshi aikace-aikace
Talakawa
Yana da kyau ga siffofi marasa daidaituwa
Siga-m (nisa, matsa lamba), bai dace da samar da taro ba
Mafi kyawun aiki a cikin masana'antu: Haɗe-haɗen tsari - suturar tsoma + rufin ruwa - an karɓa da yawa. Wannan hadawa m overall wetting na tsoma shafi tare da fice surface flatness na ruwa shafi, daidaita fiber encapsulation ƙarfi da surface daidaici.
2. Yanayi na bushewa da bushewa
Siga
Tasiri akan Uniformity
Yawan bushewa
Rashin daidaituwa (da sauri ko a hankali) yana haifar da rashin daidaiton kauri na fim, tsagewa, ko alamun raguwa.
Yanayin zafin jiki
PTFE dole ne ya narke cikin fim mai ci gaba a 360-420 ° C. Yanayin zafin jiki mara daidaituwa yana haifar da narkewa mara daidaituwa da daidaitawa
Tsawon lokaci mai tsayi
Rashin isasshen lokaci → rashin cikar samuwar fim; wuce gona da iri → yellowing ko thermal lalata
Daidaiton yanayin zafi a cikin tanda
Wuraren zafi/sanyi na gida suna haifar da karkacewar launi (misali, rawaya a wasu wurare)
A tsoma + ruwa hade tsari ne na masana'antu misali ga high-karshen PTFE high-zazzabi yadudduka. Ga dalilin da ya sa: tsoma sutura kadai yana haifar da 'meniscus sakamako' - rufin ya fi girma a gefuna kuma ya fi girma a tsakiya saboda tashin hankali na emulsion yayin da masana'anta ke fita daga wanka. Wannan bambancin gefen-zuwa-tsakiyar na iya zama 15-20% na jimlar kauri. Blade shafi kadai, yayin da samar da lebur surface, kokawa tare da shigar azzakari cikin farji - da PTFE zauna a kan surface ba tare da cikakken encapsulating da fiberglass zaruruwa, haifar da matalauta abrasion juriya. Tsarin da aka haɗa: tsoma don shiga ciki, sannan nan da nan wuce ƙarƙashin ruwan likita don cire wuce haddi da daidaita yanayin. Don sakamako mafi kyau, ya kamata a saita ratar ruwa zuwa 120-150% na kauri na ƙarshe da ake so, yana lissafin raguwa yayin bushewa. Yanayin zafin jiki a cikin tanda yana da mahimmanci kuma yana da mahimmanci - madaidaicin digiri 10 a fadin faɗin zai iya haifar da ganuwa.
Saura paraffin, man shafawa daga zane/saƙa suna hana ko da yaɗuwar PTFE da haifar da lahani.
Ƙunƙarar saman
Rashin daidaiton rashin daidaituwa yana haifar da tarin suturar da ba ta dace ba (mai kauri a wuraren da ba su da kyau, bakin ciki a wurare masu santsi)
Shawarwari: Domin high-uniformity aikace-aikace (misali, zafi sealing kaset), yi amfani da satin saƙa fiberglass masana'anta tare da zafi tsaftacewa cire duk Organic sharan kafin PTFE shafi.
Muhalli na samarwa - Garanti don Babban Uniformity
Halin Muhalli
Mafi kyawun yanayi
Me yasa
Zazzabi
20-25 ° C
Yanayin zafin da bai cancanta ba yana raunana aikin matakin shafi
Dangi zafi
<60% (manufa: 40-55%)
Babban zafi yana haifar da gurɓataccen ruwa a cikin emulsion, yana haifar da pinholes
Tsaftar iska
Mara kura (an bada shawarar tace HEPA)
Kurar iska tana shiga cikin rufi, tana haifar da lahani
Gunadan iska
Sarrafa, babu zayyana kai tsaye
Rashin daidaituwar kwararar iska yana haifar da rashin daidaituwa na rates bushewa a fadin masana'anta
Bayanin Aiki: A lokacin damina ko kwanakin zafi mai zafi, yi la'akari da gudanar da na'urar cire humidifier a cikin ɗakin rufi. Danshi sama da 70% yana ƙaruwa da lahani sosai.
Summary - Haɗa Duka Tare
Factor
Mafi Muhimman Wurin Kulawa
Madaidaicin Daraja/Range
Tsarin tsari
Rarraba girman barbashi
D50 0.18-0.22 μm, D90 <0.35 μm
Tsarin tsari
M abun ciki
60± 2%
Tsari
Hanyar sutura
Dip + ruwa hade
Tsari
Sintering zafin jiki uniformity
± 5°C fadin tanda
Substrate
Tsarin saƙa
Sakin Satin don ƙa'idodi masu mahimmanci
Substrate
Kafin magani
Tsaftace zafi, babu saura
Muhalli
Zazzabi & zafi
20-25°C, RH <60%
A taƙaice , suturar daidaituwar masana'anta mai zafin jiki na PTFE ya dogara da abubuwa huɗu masu haɗin gwiwa. Tsarin sutura (girman barbashi, danko, m abun ciki) shine tushen dalilin. Tsarin shafa da ɓacin rai - musamman ta amfani da tsoma + ruwa a hade - shine matakin yanke hukunci. Substrate ingancin da pre-jiyya samar da tushe. Yanayin samarwa yana tabbatar da daidaito.
Don aikace-aikacen buƙatun da ke buƙatar babban daidaituwa (misali, kaset ɗin rufe zafi, saƙon layi don samfuran m), tsarin tsoma + ruwan wukake shine ma'aunin gwal na masana'antu. Saka idanu kowane siga akai-akai, kiyaye yanayin muhalli karko, kuma gwada emulsions masu shigowa don rarraba girman barbashi.
Kuna buƙatar taimako don cimma daidaiton sutura don masana'anta na PTFE? Aokai PTFE yana ba da sabis na shafi na al'ada da shawarwarin tsari. Tuntuɓe mu tare da ƙayyadaddun ƙayyadaddun manufa da ƙarar samarwa.
Idan kuna son ƙarin sani game da cikakkun bayanai dalla-dalla, yanayin aikace-aikacen, da mafita na musamman don cikakkun samfuran samfuranmu, gami da yadudduka masu zafin jiki na PTFE, kaset ɗin zafin jiki na PTFE, PTFE high-zazzabi raga bel, m fusing inji bel, guda-gefe PTFE masana'anta, high-resistant fiber masana'anta high-resistant fiberglass masana'anta, high-resistant fiber bel. , da fatan za a iya tuntuɓar mu:
