Ukuba usebenzisa isitywini sobushushu ekupakishweni kokutya, fakela itreyi yokubhaka, okanye ugqume ibhanti lokuhambisa ukutya nge Iteyiphu ye-PTFE yobushushu obuphezulu , kufuneka uyazi: ingaba ishushu kangakanani? Ixesha elingakanani? Kwaye xa iqala ingakhuselekanga?
I-PTFE yaziwa ngokumelana nobushushu okugqwesileyo, kodwa 'ukumelana nobushushu' ayithethi 'ingenasiphelo'. Ukugqithisa imilinganiselo yokushisa kunokubangela ukuthotywa kwezinto - kwaye kwiimeko ezimbi kakhulu, ukukhupha imisi eyityhefu engafanele idibane nokutya.
I-Aokai PTFE ibonelele ngeteyiphu ze-PTFE zodidi lokutya iminyaka. Esi sikhokelo sichaza imimandla yokushisa ekhuselekileyo, imida yexesha, kunye neemfuno zokulawula (i-FDA, i-EU) kwizicelo zoqhagamshelwano lokutya.
IMida yoBubushushu-IiNdawo eziBalulekileyo eziNtathu
ICandelo lobushushu |
Ixabiso |
Amanqaku aphambili |
Ubushushu bokusebenza ngokuqhubekayo |
≤ 260°C |
Umda osisiseko. I-tape igcina ukusebenza okuzinzileyo kwinkonzo yexesha elide kulo bushushu. Ilungele ii-oveni zokubhaka, izitywini zobushushu, kunye nezixhobo zokomisa. |
Iqondo lobushushu leXesha elifutshane eliPhakamileyo |
≤ 300°C |
Ivunyelwe kuphela ixesha elifutshane kakhulu (umz., 5-10 imizuzu). Ukubonakaliswa kwexesha elide phakathi kwe-260 ° C kunye ne-300 ° C kukhawuleza ukuguga kwezinto kwaye kuphakamisa ingozi yokhuseleko kakhulu. |
Ubushushu obungavumelekanga |
> 327°C |
I-PTFE iqala ukubola ngaphezu kobu bushushu kwaye inokukhupha imisi eyityhefu (kuquka i-perfluoroisobutylene). Ukusetyenziswa akuvumelekanga ngokungqongqo. Ukudibana ngqo nedangatye kufuneka kuphetshwe ngokupheleleyo. |
Umlinganiselo wobushushu obuphantsi |
≥ -70°C |
I-tape ihlala isetyenziswa kwiindawo ze-cryogenic kodwa iba yi-brittle. Ukugoba kunye nefuthe lomatshini kufuneka kuthintelwe ukuphepha ukuqhekeka. |
I-Aokai PTFE ivelisa iteyiphu yebanga lokutya evavanyiweyo ukumelana no-260°C ngokuqhubekayo. Sicebisa abathengi abanezicelo zomda (umzekelo, i-270-280 ° C ngezikhathi ezithile) ukuba baqhube imephu yobushushu bomphezulu kwisiza kwaye baqwalasele ibakala leteyiphu elishinyeneyo, elibonelela ngobunzima bobushushu obungaphezulu kunye nokuthotywa kancinci.
Imida Yexesha – Ingakanani 'Ekhuselekileyo'?
Okwangoku, imimiselo emikhulu yokhuseleko yamazwe ngamazwe equka i-FDA 21 CFR 177.1550 (USA) kunye ne -EU Regulation No 10/2011 ayilichazanga ixesha elidityanisiweyo loqhagamshelwano elikhuselekileyo kwiiteyiphu ze-PTFE. Imida yexesha ngokuyinhloko inqunywe ngubushushu bokusebenza.
Ubushushu |
Ixesha loQhagamshelwano eliKhuselekileyo |
Ukuqiqa |
≤ 260°C |
Ixesha elongeziweyo (ukuya kwii-200 iintsuku ezichazwe kwezinye izifundo) |
I-PTFE ihlala izinzile; akukho mfuduko unokulinganiswa |
260-300°C |
Imizuzu (imizuzu emi-5 ukuya kwengama-30, kuxhomekeke kubushushu obuchanekileyo) |
Ukuguga okukhawulezileyo; ukuthotywa komphezulu kuqala |
> 300°C |
Ayikhuthazwa; imizuzwana ukuya kwimizuzu embalwa ubuninzi |
Umngcipheko wokubola ukhula ngokukhawuleza |
Imizekelo esebenzayo:
Isonka sokubhaka kwi-200 ° C imizuzu engama-30 - ikhuselekile ngokupheleleyo, ukusetyenziswa ngokuphindaphindiweyo kwiinyanga kulungile.
Ukushisa ukutywinwa kweengxowa ze-polyethylene kwi-180 ° C kwi-1 yesibini - ikhuselekile, izigidi zemijikelezo zinokwenzeka.
Ukucoca i-heat sealer ngokusebenza kwi-280 ° C imizuzu eyi-10 - iyamkeleka ngamaxesha athile, kodwa kungekhona yonke imihla.
Ukusebenzisa i-PTFE tape njenge-grill liner kwi-300 ° C kwiiyure ze-2 - ayikhuselekile; iteyiphu iya kuthoba.
Ukuthotyelwa kwemiGaqo – i-FDA kunye neMigangatho ye-EU
I-FDA 21 CFR 177.1550 - Lo mmiselo uquka iireyini ze-PTFE zoqhagamshelwano lokuphinda lokutya. Ayichazi ixesha elithile elilinganiselweyo kodwa lifuna ukuba inqaku eligqityiweyo (i-tape) kufuneka lenziwe ngokuhambelana ne-Good Manufacturing Practices (GMP) kwaye akufanele ibangele ukuba ukutya kuhlanjululwe.
Ummiselo we-EU 10/2011 - Lo mmiselo uquka izinto zeplastiki ezijoliswe ekudibaneni nokutya. I-PTFE idweliswe njengento egunyazisiweyo. Imida yokufuduka iyonke iyasebenza (ngokubanzi ≤10 mg/dm²).
Indlela eqinisekiswa ngayo ukuthotyelwa: Ukuthobela kuyahluka ngokwemeko yesicelo kwaye kufuneka kuqinisekiswe ngovavanyo lokufuduka . Uvavanyo olunjalo luyilwe ngokusekwe kwindibaniselwano eqatha yeqondo lobushushu kunye nobude bexesha lokunxibelelana kwiimeko zokwenyani zokusebenza.
Uhlobo loVavanyo |
Iimeko eziqhelekileyo |
Injongo |
Ukuzaliswa okutshisayo / ukunyanyiswa |
≤100 ° C kwiiyure ze-2 |
Qinisekisa ukuba akukho khemikhali ifudukela kukutya okunamanzi okanye okunamafutha |
Ukubhaka kwi-oveni |
200-250 ° C imizuzu 30-60 |
Ukulinganisa iimeko zokubhaka |
Ubushushu bexesha elifutshane |
260 ° C imizuzu eyi-15 |
Eyona nto imbi kakhulu kwizicelo zokutywinwa kobushushu |
Yenza:
✓ Sebenzisa iteyiphu ye-PTFE ngaphakathi kwe -260°C ngokuqhubekayo ukubhaka, ukutywina, kunye nokuhambisa
✓ Kwimijikelezo emfutshane yokucoca kwi- 280-300 ° C , nciphisa ixesha ukuya kwi -5-10 imizuzu kwaye uvumele ukupholisa.
✓ Faka enye endaweni yeteyiphu xa umphezulu uba rhabaxa, ujike umbala, okanye umsebenzi ongancamatheliyo uyehla
✓ Gcina itheyiphu kwindawo ecocekileyo, neyomileyo ngokwemigaqo yomenzi
Musa:
✗ Ungaze udlule kwi -327°C – i-PTFE iyabola kwaye ikhuphe umsi oyityhefu
✗ Ungaze ufake idangatye elithe ngqo kwiteyiphu ye-PTFE
✗ Musa ukusebenzisa iteyiphu ye-PTFE ngaphezulu kwe-260°C ukudibana nokutya ixesha elide (umz., ukubhaka imini yonke nge-270°C)
✗ Sukuzihoya iimpawu zokuguga – ukuba tyheli, ukubhitya, okanye ukuqhekeka komphezulu
Xa ungathandabuzi: Yenza uvavanyo lokufuduka kwelona qondo lobushushu libi kakhulu kunye nobude, okanye udibane nomenzi weteyiphu ngedatha yesicelo esithile.
Isishwankathelo , i-PTFE i-high-temperature tape ikhuselekile kuqhagamshelwano lokutya xa isetyenziswe ngaphakathi kwemida yayo echaziweyo: ≤260 ° C ukusetyenziswa okuqhubekayo, ≤300 ° C kwiincopho ezimfutshane (imizuzu kuphela) , kwaye ingaze ibe ngaphezu kwe-327 ° C. I-FDA kunye nemithetho ye-EU ayibeki umda wexesha jikelele - ubude boqhagamshelwano olukhuselekileyo buxhomekeke kubushushu kwaye kufuneka buqinisekiswe ngovavanyo lokufuduka olulinganisa iimeko zokwenyani.
Kwiinkqubo ezininzi zokutya eziqhelekileyo - ukubhaka, ukutywinwa kobushushu, kunye ne-non-stick liners - tape ye-PTFE iphakathi kweeparamitha ezikhuselekileyo. Kodwa soloko ulinganisa ubushushu bomphezulu wokwenyani, buyisela iteyiphu yakudala ngokukhawuleza, kwaye ujonge amaxwebhu okuthotyelwa kwezicelo ezilawulwayo.
Ngaba ufuna iteyiphu yenqanaba lokutya le-PTFE lobushushu obuthile kunye nobude? I-Aokai PTFE inikezela ngeeteyiphu ezihambelana ne-FDA ezinoluhlu olubhaliweyo olukhuselekileyo lokusebenza. Qhagamshelana nathi kumaphepha edatha yobugcisa kunye nenkxaso yovavanyo lokufuduka.
Lo mxholo unikwe nguJiangsu Aokai New Materials Technology Co., Ltd.
Ukufumana iinkcukacha ezicacileyo, isikhokelo sesicelo, kunye nezisombululo ezilungiselelwe umgca wemveliso yethu epheleleyo, kubandakanywa i-PTFE i-high-temperature tapes, i-PTFE high-temperature tapes, iibhanti ze-mesh ze-PTFE, amabhanti omatshini wokudibanisa angenamthungo, i-PTFE enecala elinye elityatyekwe ngelaphu, amabhanti okuhambisa ubushushu obuphezulu kunye nobushushu obuphezulu be-fiberglass , nceda uzive ukhululekile kwilaphu:
Siphakamisa imigaqo yobungcali kunye nemfezeko, kwaye sizame ukuhambisa izisombululo ezithembekileyo kunye neenkonzo ezicingayo kubo bonke abathengi.
