Kana iwe ukashandisa chinovhara kupisa pakurongedza chikafu, isa tireyi yekubikira, kana kuvhara bhandi rekutakura chikafu ne PTFE high-temperature tepi
PTFE inozivikanwa nekunaka kwayo kwekudzivirira kupisa, asi 'kusapisa kupisa' hazvirevi 'zvisingagumi'. Kupfuura tembiricha miganho inogona kukonzera kuparara kwezvinhu - uye muzviitiko zvakaipisisa, kuburitsa utsi hune muchetura husingafanire kubata chikafu.
Aokai PTFE yakapa chikafu-giredhi PTFE matepi kwemakore. Gwaro iri rinotsanangura nzvimbo dzakachengeteka dzetembiricha, miganho yenguva, uye zvinodikanwa zvekutonga (FDA, EU) zvekushandisa zvekudya.
Temperature Limits - Iwo Matatu Akakosha Zone
Temperature Category
Value
Key Notes
Kuramba Kushanda Temperature
≤ 260°C
Primary limit. Iyo tepi inochengetedza kuita kwakagadzikana kwesevhisi yenguva refu pane iyi tembiricha. Inokodzera mahovhoni ekubikisa, maheat sealers, uye midziyo yekuomesa.
Short-Term Peak Temperature
≤ 300°C
Inobvumidzwa chete kwenguva pfupi pfupi (semuenzaniso, 5-10 maminetsi). Kuratidzwa kwenguva refu pakati pe260°C ne300°C kunomhanyisa kuchembera kwezvinhu uye kunosimudza njodzi dzekuchengetedza zvakanyanya.
Prohibited Temperature
> 327°C
PTFE inotanga kuora pamusoro petembiricha iyi uye inogona kuburitsa utsi hunokachidza (kusanganisira perfluoroisobutylene). Kushandisa kunorambidzwa zvachose. Direct murazvo kusangana kunofanira kudzivirirwa zvachose.
Low-Temperature Limit
≥ -70°C
Iyo tepi inoramba ichishandiswa munzvimbo dze cryogenic asi inova brittle. Kupeta uye mashandiro emuchina anofanirwa kudzivirirwa kudzivirira kutsemuka.
Aokai PTFE inogadzira tepi yegiredhi-yekudya yakaedzwa kuti ishingirire 260°C inoenderera. Isu tinopa zano vatengi vane muganhu wekushandisa (semuenzaniso, 270-280 ° C inopindirana) kuti iite pane-saiti pamusoro tembiricha mepu uye funga gobvu tepi giredhi, iyo inopa huwandu hwekupisa uye kudzikira zvishoma.
Nguva Yenguva - Yakareba Sei 'Yakachengeteka'?
Parizvino, mirau mikuru yekuchengetedzwa kwenyika inosanganisira FDA 21 CFR 177.1550 (USA) uye EU Regulation No 10/2011 haina kutara nguva yakabatana yakachengeteka yekubata matepi ePTFE. Miganho yenguva inonyanya kutsanangurwa nekushanda tembiricha.
Tembiricha
Safe Contact Duration
Kurangarira
≤ 260°C
Yakawedzerwa nguva (kusvika kumazuva 200 anotaurwa mune zvimwe zvidzidzo)
PTFE inoramba yakagadzikana; hapana kuyerwa kutama
260-300°C
Maminitsi (kazhinji 5-30 maminitsi, zvichienderana nekushisa chaiko)
Kukurumidza kukwegura; kushatiswa kwepamusoro kunotanga
> 300°C
Hazvikurudzirwi; masekonzi kusvika maminitsi mashoma
Ngozi yekuora inowedzera nekukurumidza
Mienzaniso inoshanda:
Kubika chingwa pa 200 ° C kwemaminitsi makumi matatu - zvakachengeteka zvachose, kushandiswa zvakare kwemwedzi zvakanaka.
Kupisa kuvhara polyethylene mabhegi pa 180 ° C kwesekondi 1 - yakachengeteka, mamiriyoni emagetsi anogoneka.
Kuchenesa kupisa sealer kuburikidza nekushanda pa 280 ° C kwemaminitsi gumi - inogamuchirwa nguva nenguva, asi kwete zuva nezuva.
Kushandisa PTFE tepi segrill liner pa 300 ° C kwemaawa maviri - kwete kuchengeteka; tepi inoshatisa.
Regulatory Compliance - FDA & EU Mitemo
FDA 21 CFR 177.1550 - Uyu mutemo unovhara PTFE resin yekudzokorora kubata chikafu. Izvo hazvitsanangure nguva yakatarwa asi inoda kuti chinyorwa chakapedzwa (tepi) chigadzirwe maererano neGood Manufacturing Practices (GMP) uye haifanire kukonzera kuti chikafu chive chakashata.
EU Regulation 10/2011 - Uyu mutemo unovhara zvinhu zvepurasitiki zvakagadzirirwa kusangana nechikafu. PTFE yakanyorwa sechinhu chakabvumidzwa. Yese miganho yekutama inoshanda (kazhinji ≤10 mg/dm²).
Kuti kutevedza kunosimbiswa sei: Kutevedza kunosiyana nemamiriro ekushandisa uye kunofanirwa kusimbiswa kuburikidza nebvunzo dzekutama . Maedzo akadai akagadzirwa zvichibva pamubatanidzwa wakaomarara wetembiricha uye nguva yekubata mumamiriro chaiwo ekushanda.
Test Type
Typical Conditions
Chinangwa
Kuzadza kupisa / pasteurization
≤100 ° C kwemaawa maviri
Ita shuwa kuti hapana kutama kwemakemikari mune zvekudya zvine aqueous kana mafuta
Kubika muovheni
200-250 ° C kwemaminitsi 30-60
Tevedzera mamiriro ekubheka
High-tembiricha pfupi-nguva
260 ° C kwemaminitsi gumi nemashanu
Yakaipisisa-kesi yekupisa sealing application
Kuita:
✓ Shandisa PTFE tepi mukati me260°C inoenderera mberi yekubika, kuisa chisimbiso, uye kutumira.
✓ Kwenguva pfupi yekuchenesa pa280-300 ° C , gadzirisa nguva kusvika ku5-10 maminetsi uye bvumira kutonhora.
✓ Tsiva tepi kana pamusoro paita kushata, kushanduka ruvara, kana kuti kusabatira tepi kwadzikira
✓ Chengetedza tepi munzvimbo dzakachena, dzakaoma maererano nezvinodiwa nemugadziri
Usadaro:
✗ Usambopfuura 327°C - PTFE inoora uye inoburitsa utsi hune muchetura
✗ Usambofa wakaisa moto wakananga kuPTFE tepi
✗ Usashandise tepi yePTFE inopfuura 260 ° C yekubata chikafu kwenguva refu (semuenzaniso, kubheka kwezuva rose pa270 ° C)
✗ Usafuratira zviratidzo zvinoonekwa zvekuchembera - kutsvuka, brittleness, kana kutsemuka kwepamusoro
Paunenge uchipokana: Ita bvunzo yekutama pane yako yakanyanya kupisa tembiricha uye nguva, kana bvunza mugadziri wematepi kune chaiyo application data.
Muchidimbu , PTFE yakakwirira-tembiricha tepi yakachengeteka pakubata kwechikafu kana ichishandiswa mukati memiganhu yayo yakatsanangurwa: ≤260 ° C kuti irambe ichishandiswa, ≤300 ° C kwepamusoro peaks (maminetsi chete) , uye isingambopfuuri 327 ° C . FDA neEU mirau haise muganho wepasirese wenguva - nguva yakachengeteka yekubata inoenderana nekupisa uye inofanirwa kusimbiswa nemiedzo yekufambisa inoteedzera mamiriro chaiwo.
Kune akawanda akajairika echikafu maapplication - kubheka, kupisa chisimbiso, uye non-stick liner - PTFE tepi iri mukati mekuchengetedza ma paramita. Asi gara uchiyera tembiricha chaiyo yepasi, chinja tepi yakura nekukasira, uye bvunza zvinyorwa zvekuteerera kune zvikumbiro zvinodzorwa.
Unoda chikafu-giredhi PTFE tepi kune yakatarwa tembiricha uye nguva? Aokai PTFE inopa FDA-inoenderana matepi ane akanyorwa akachengeteka anoshanda maseru. Bata isu kune technical data sheets uye migration test rutsigiro.
Izvi zvirimo zvinopihwa neJiangsu Aokai New Materials Technology Co., Ltd.
Kuti uwane ruzivo rwakadzama, kutungamira kwekushandisa, uye zvigadziriso zvakagadziridzwa zvemutsara wezvigadzirwa zvedu, zvinosanganisira PTFE high-temperature tepi, PTFE high-temperature matepi, PTFE mesh mabhandi, seamless fusing machine mabhandi, single-sided PTFE yakavharwa jira, high-temperature conveyor mabhandi uye yakakwirira-tembiricha fiberglass inzwa wakasununguka kutibata.
Isu tinosimudzira misimboti yehunyanzvi uye kuvimbika, uye tinoyedza kuendesa yakavimbika-yekumira mhinduro uye masevhisi ane pfungwa kune vese vatengi.
