Sintering inhanho yakakosha apo PTFE zvimedu zvinonyunguduka, kuyerera, uye fuse kuita inoenderera, yakakora firimu inobatana kune fiberglass substrate. Kana nguva yekubata ipfupi, chifukidzo chinoramba chiri porous uye chisina simba. Kana yakarebesa, iyo PTFE inodzikisira, kuburitsa magasi ane muchetura uye kutendeuka brittle.
Iyo yakakosha parameter inobata nguva - iyo nguva mushure mekunge iyo yakawanda yekuputira inosvika pakupisa sintering (kazhinji 370-400 ° C). Iyi haisi nguva chete iyo choto chiri patembiricha; ndiyo nguva jira pacharo riri pamusoro pekunyungudika.
Aokai PTFE yakagadziridza sintering paramita pamitsetse yakawanda yechigadzirwa. Gwaro iri rinobata nguva yekubata zvinodiwa zvemhando dzakasiyana dzechoto, core pesence factor, uye hurema kubva kune isina kufanira nguva.
Basic Principles - Zvinorevei 'Kubata Nguva' Chaizvoizvo
1. Chinangwa chikuru
Kubvumira PTFE particles kunyatsonyunguduka, kuyerera, uye fuse pamusoro penzvimbo yavo yakanyunguduka (inenge 327 ° C ), ichigadzira firimu rinoramba riripo uye dense rinowana kupindirana kwakaoma kwemagetsi ne fiberglass substrate.
2. Musiyano unokosha
Kubata nguva inoreva nguva yakamira mushure mekunge kuwanda kwekuputira kwasvika pakupisa tembiricha (kazhinji 370-400 ° C), pane kungotora nguva iyo tembiricha yechoto inoramba iripo.
Izvo zvakakosha kuti uve nechokwadi chekuzara kwejira refiberglass (kusanganisira resin yakavharirwa pakati pemukati fiber bundles) inosvika pakunyunguduka tembiricha uye inobata kwenguva yakakwana. Kupisa kwepamusoro chete hakuna kukwana - zvikamu zvemukati zvinofanirawo kunyunguduka.
Reference Ranges for Typical Processes
1. Kuenderera mberi sintering choto
Kugadzika tembiricha yevira: Multi-zone kudziyisa pamwe nepamusoro-tembiricha zone yakaiswa ku380-400°C (kusvika 410°C kune mamwe magadzirirwo akagadzirwa).
Inoshanda nguva yekugara (nguva yekubata) munzvimbo yekupisa kwepamusoro:
Fabric Kukora |
Yakakurudzirwa Kubata Nguva |
Jira rakatetepa (0.08–0.15 mm) |
30 - 90 masekondi |
Jira riri pakati nepakati (0.15–0.30 mm) |
90 - 180 seconds (1.5 - 3 min) |
Jira gobvu rinorema (0.30–0.50 mm+) |
3 - 5 maminitsi kana kupfuura |
Kugadzirisa kunoshanda: Tune mutsara kumhanya kunoenderana nehurefu hwechoto - kuderedza jira rekufamba kumhanya kuti uwedzere kutonhora kwekugara nguva.
2. Batch (bhokisi-mhando) sintering choto
Bata tembiricha isingaperi pa 380-390 ° C mushure mekupisa:
Material Type |
Yakakurudzirwa Kubata Nguva |
Single-coated fiberglass jira |
5 - 15 maminetsi (yakagadzirirwa kubva panguva iyo jira rejira rinorova tembiricha yakatarwa) |
Multi-impregnated kana laminated zvinhu |
15 - 30 maminetsi (kuvimbisa yunifomu yemukati uye tembiricha yepamusoro) |
Yeuchidzo: Mabhokisi evira anotambura kusaenzana kwekushisa kwekugovera. High-velocity inotenderera mhepo inodiwa, uye nguva yekubata ichawedzerwa zvakakodzera kudzivirira pasi-sintering yemukati maturusi.
Core Zvinhu Kusarudza Kubata Nguva
Zvinhu zvishanu zvakakosha zvinopindirana kuona nguva yakakwana yekubata chero chigadzirwa.
1. Fiberglass jira ukobvu uye uremu
Machira akakora, anorema anoratidza kushomeka kwemafuta uye anoda nguva yakareba yekubata kuti kupisa kupinde pakati.
2. Kuvhara kunopfuura uye PTFE kurodha
Multiple coating layers anogadzira akakora resin mafirimu anoda yakawedzera kudziyisa kuti anyungudise zvizere pasi. Single yakaonda coatings inobvumira kupfupika kubata nguva.
3. PTFE emulsion giredhi
Yakachena PTFE emulsions - inoda yakakwirira sintering tembiricha uye yakakwana nguva yekugara
Yakagadziridzwa masanganiswa (akasanganiswa nePFA kana FEP) - ratidza kunyungudika kwepamusoro uye kubvumidza kuderedzwa kwenguva yekubata
4. Sintering tembiricha
Kupisa kwepamusoro-soro (semuenzaniso, 400 ° C) - kupfupisa nguva inodiwa yekubata
Tembiricha dziri padyo nemuganho wakaderera (370°C) - inoda kupisa kwenguva refu
Iyo 380-390 ° C hwindo inoyera kugadzirwa kwekuita uye PTFE njodzi yekushatisa
5. Furnace design uye kupisa kwemhepo velocity
Mafura ane high-speed yemhepo inopisa kutenderera kana infrared kupinza - inoshanda kutamisa kupisa, ipfupi kubata nguva.
Mafura anotsamira chete pakudziya kwakachena - yakawedzerwa nguva yekugara inodiwa
Kukanganisa Kunokonzerwa Nekutadza Kubata Nguva
1. Nguva isina kukwana yekubata (under-sintering)
Symptom |
Root Chikonzero |
Coating inoshandura opaque white, grainy, rough surface |
Zvimedu hazvina kunyatsonyungudutswa uye kusanganiswa |
Kusasanamira zvakanaka - kupepeta mushure mekukwesha kana kupeta |
Kubatana kusina simba kune fiberglass |
Yakaderedzwa dielectric simba, yakakwirira mhepo permeability |
Porous, isina kukwana firimu chimiro |
Yakaderedzwa mvura / mafuta ekudzinga |
Musoro hauna kuzara |
Substandard mechanical simba |
Kubatana kusina simba kwe-inter-particle |
Kuona: Kuongorora kwekuona (opaque chena, zviyo), tepi yekukwevera bvunzo (kupepeta), kuyambuka-chikamu chekuongorora (chena isina kunyungudika zvidimbu mukati).
2. Kurebesa kubata nguva (over-sintering)
Symptom |
Root Chikonzero |
PTFE inotanga kuora kwekupisa |
Kuratidzwa kwenguva refu pa380-400°C (yakanyanya pamusoro pe415°C) |
Coating inoshanduka yero, brittle, brown/black scorch spots |
Kuparara kwemafuta |
Toxic fluoride gasi kuburitswa (HF, PFIB) |
PTFE kuora |
Fiberglass inorasikirwa nekusimba simba |
High-temperature oxidation kukuvara |
Mapini uye mabubbles pane coating surface |
Gasi kushanduka kubva pakuora |
Kuona: Kuongorora kunoonekwa (yellow, scorch spots), brittleness test (kutsemuka kana kwakakotama), kuona kunhuwa (acrid kunhuwa kunoratidza kuora).
Inoshanda Yekuongorora Maitiro uye Maitiro Ekugadzirisa Mazano
1. Gadzira tembiricha-nguva curves
Shandisa tembiricha yekudziya tembiricha kurekodha tembiricha yejira chaiyo-nguva uye kuona kunyungudika kunoshanda kunopfuura 370°C. Iyi ndiyo nzira yakavimbika yekusimbisa chaiyo kubata nguva.
2. Kuongororwa kwekukura kwekuona
Yakazara sintered PTFE machira aripo:
Uniform semi-pachena kuti inyatso kujeka kutaridzika (inosiyana nekukora)
Hapana chalky unmelted particles
Flexible kubata (kwete kuoma kana brittle)
3. Adhesion test
Hapana kupenengura kana kusara kwehupfu mushure metepi kudhonza bvunzo kana kudzokororwa kukotama (peta / kuvhura 5-10 nguva).
4. Muchinjikwa-chikamu chinoparadza chekuongorora
Cheka jira rakachinjika-zvikamu zvinoratidza:
5. Matanho ekuchengetedza uye kumanikidzwa kutonhora
Chengetedza mhepo ine simba yekupedza simba kudzivirira kuunganidzwa kwechepfu byproducts (perfluoroisobutylene, HF) kubva mukuora kwePTFE.
Strictly cap maximum tembiricha uye kubata nguva
Pakarepo dyisa jira munzvimbo yekumanikidzirwa yekutonhodza mushure mechikamu chepamusoro-tembiricha kuti chitonhorere pasi pe300 ° C nekukurumidza - kutonhora nekukurumidza kunobatsira kukiya mune yakasanganiswa microstructure.
Pfupiso – Quick Reference Holding Time Guide
Furnace Type |
Fabric Kukora |
Yakakurudzirwa Bata Nguva |
Inoenderera (multi-zone) |
Mutete (0.08-0.15 mm) |
30 - 90 masekondi |
Inoenderera (multi-zone) |
Pakati (0.15-0.30 mm) |
90 - 180 masekondi |
Inoenderera (multi-zone) |
Huremu (>0.30 mm) |
3 - 5+ maminitsi |
Batch (bhokisi-rudzi) |
Bhachi rimwe chete |
5 - 15 maminitsi |
Batch (bhokisi-rudzi) |
Multi-jasi / laminated |
15 - 30 maminitsi |
General mutemo: Tora iyo shoma inogamuchirwa yekubata nguva inovimbisa kunyungudika kwakazara kwekunyungudika, kuenzana, uye zero isina kunyungudika yemukati macores - kudzikamisa kupisa kwekupisa njodzi.
Aokai PTFE inopa sintering process tsigiro inosanganisira yekutevera tembiricha, kuyambuka-chikamu chekuongorora, uye parameter optimization. Bata isu kuti uwane rubatsiro rwehunyanzvi.
Iyo yepamusoro data data inopihwa ne Jiangsu Aokai New Materials Technology Co., Ltd.
Kana iwe uchida kuwana yakadzama yakatarwa, mamiriro ekushandisa uye zvigadziriso zvakagadziridzwa zvemutsetse wedu wakazara wechigadzirwa unosanganisira PTFE yakakwirira-tembiricha jira, PTFE yakakwirira-temperature adhesive tepi, PTFE yakakwirira-temperature mesh bhandi, seamless kupisa kudzvanya bhandi, single-sided PTFE jira, yakakwirira-tembiricha inodzivirira inodzivirira girazi, tapota taura nesu pazasi girasi resipiritsi, faibha inodzivirira, tapota taura nesu pazasi.
Isu tinoomerera kune hunyanzvi zviyero uye kutendeseka, yakatsaurirwa kukupa iwe imwe-yekumira maindasitiri mhinduro uye anofunga sevhisi yevatengi!
