Ezitshalweni zamakhemikhali, amapayipi kanye nemikhumbi ibhekana nokuhlaselwa okungapheli okuvela emithonjeni enolaka - ama-asidi aqinile, ama-alkali ashisayo, izinyibilikisi eziphilayo, nesitimu. Itheyiphu ye-PTFE iyisixazululo esivamile sokuvikela ukugqwala, okungeyona induku, nokuvala uphawu. Kodwa ukukhetha itheyipu efanele akulula njengokukhetha izinga lokushisa eliphakeme kakhulu.
I-Aokai PTFE inikeze ngetheyiphu ye-PTFE yezicelo zamakhemikhali amashumi eminyaka. Lo mhlahlandlela uchaza ukwakheka kwezingqimba ezintathu zetheyiphu ye-PTFE, imibandela yokukhetha eyinhloko (izinga lokushisa, imidiya yamakhemikhali, izidingo zemishini), kanye nemihlahlandlela yokwakha ebalulekile.
Isakhiwo Sezendlalelo Ezintathu se-PTFE High-Temperature Tape
Ukusebenza okuphelele kwetheyiphu ye-PTFE yokuhweba kunqunywa izendlalelo ezintathu zesakhiwo:
Isendlalelo Sesakhiwo |
Izinto Ezivamile |
Umthelela Ekukhetheni Umkhiqizo |
Isendlalelo sokusebenza esingaphezulu |
Ifilimu ye-PTFE ehlanzekile / indwangu ye-fiberglass efakwe nge-PTFE |
Ilawula impahla engagxili, ukumelana namakhemikhali, kanye nokumelana nokushisa okuphezulu |
Ukuqinisa i-substrate |
Ayikho (ifilimu ehlanzekile) / Indwangu ye-Fiberglass / Indwangu ye-Aramid |
Inquma amandla emishini, ukumelana nokuqina, nokumelana nokubhoboza |
Isendlalelo sokunamathela |
Silicone PSA, Acrylic PSA, Rubber-based PSA |
Ibeka umkhawulo wokushisa ophezulu kanye nokumelana kwamakhemikhali we-tape yonke; ngokuvamile isixhumanisi sokusebenza esibuthakathaka |
Ukuqonda okubalulekile: Nakuba i-PTFE ngokwayo ingasebenza ngokuzinzile ukusuka ku -190°C kuya ku-260°C isikhathi eside, okunamathelayo kuwukuvimbezela ukusebenza . Khetha okunamathelayo ngokusekelwe endaweni yesevisi yangempela, hhayi nje indawo ye-PTFE.
Imibandela Yokukhetha Eyinhloko kanye Nezimiso Ezihambisanayo
1. Izinga lokushisa elisebenzayo - ukukhetha okunamathelayo kubaluleke kakhulu
Izinga Lokushisa |
I-Adhesive Enconyiwe |
Kungani |
200°C – 260°C (isikhathi eside) |
I-Silicone PSA (iyadingeka) |
Okuwukuphela kwesistimu yokunamathela egcina ukuqina okuzinzile kulobu bubanzi; okusele okuncane ngemuva kokucwecwa |
120°C – 180°C nge-solvent ephakeme nokumelana nowoyela |
High-temperature acrylic PSA |
Ukubopha okuqinile kune-silicone, kodwa kwehluleka ngokushesha ku-260°C |
Ngaphansi kuka-100°C |
I-acrylic evamile noma i-raber-based |
Kwamukelekile, kodwa akuvamile ezindaweni zamakhemikhali |
Inothi le-Aokai PTFE: Ngohlelo lokusebenza ku-200°C+, i-acrylic PSA ayamukelekile - izokwehlisa isithunzi, ithambe, futhi ibangele ukuxebuka kweteyiphu. I-Silicone yiyona kuphela inketho esebenzayo.
Isendlalelo esisebenzayo se-PTFE sihlanganisa cishe ukumelana nokugqwala kwendawo yonke (ngaphandle kwezinsimbi ezincibilikisiwe ze-alkali kanye negesi ye-fluorine enezinga eliphezulu lokushisa eliphezulu). Kodwa-ke, imidiya yamakhemikhali ingena isuka emaphethelweni we-tape futhi igugule ngokuqondile ungqimba olunamathelayo.
Chemical Media |
I-Adhesive Enconyiwe |
Isexwayiso |
Ama-asidi aqinile angaphili (HCl, H₂SO₄ ≤80%), ama-alkali aqinile (NaOH), amanzi anosawoti, umhwamuko wamanzi |
I-Silicone PSA |
Ukubekezelelana okuhle kakhulu; yakha isivikelo esizinzile |
Izinyibilikisi zemvelo (ama-ketone, ama-esters, i-benzene, i-toluene), amafutha, izinto ezibaswayo, ama-acid oxidizing aqinile (HNO₃, agxilisiwe i-H₂SO₄), i-glacial acetic acid. |
I-Acrylic PSA (ibanga elimelana ne-solvent) |
I-silicone ivuvukala kuma-solvents ephilayo; Kunconywa i-acrylic, kodwa qinisekisa izinga lokushisa (ngokuvamile ≤150°C) |
Isitimu sokushisa okuphezulu + i-asidi ephezulu yokugxila/i-alkali (ukuchayeka kushintshana) |
I-PSA eguquliwe ye-silicone + i-multi-layer winding |
Isimo esibi kakhulu - i-silicone ingase i-hydrolyze; qinisa nge-multi-layer winding |
Emazingeni okushisa angaphezu kuka-150°C anezincibilikisi eziphilayo: Sebenzisa ukulungisa okomshini noma okunganamatheli okushisa-shwabanisa i-PTFE tape/ishubhu.
Izimo Zohlelo Lokusebenza kanye Nokukhethwa Kwe-Substrate Ehambisanayo
Isicelo Scenario |
I-Substrate Enconyiwe |
Isizathu |
Ipayipi elingaphandle lokunqanda ukugqwala kanye ne-anti-stick coating (gwema ukunqwabelana kwempahla ye-splash) |
Indwangu ye-fiberglass ene-PTFE enamandla aphezulu (nsundu/emnyama) |
Ingagugi, imelana nezinyembezi; ukujiya 0.13-0.25mm; ilungele ukusongwa okuphindaphindiwe, ukuhambisana okuhle kakhulu |
Udonga lwangaphakathi lwesitsha kanye ne-flange surface anti-stick liner |
Ifilimu ehlanzekile ye-PTFE esobala |
Indawo engeyona induku ebushelelezi kakhulu, ayikho ingozi ye-fiber wicking; ilungele izindawo eziyisicaba nezinkulu ezigobile |
Hlanganisa i-shaft & roller wrapping |
Indwangu ye-fiberglass ye-PTFE ene-high-tack silicone adhesive |
Isekela i-tension winding; I-fiberglass substrate iletha amandla aqinile, igwema ukuguquguquka ngesikhathi sokujikeleza |
Ukuvala intambo nokushintshwa kwe-gasket |
Itheyiphu yefilimu ye-PTFE eyenziwe ngomshini |
Isebenzisa impahla ye-PTFE yokugeleza okubandayo ukugcwalisa izikhala; i-fiberglass-free tape iyadingeka |
Imigodi kanye nezibuko zamathangi aqinile okugcina i-asidi |
Ifilimu ye-PTFE ehlanzekile / indwangu ye-fiberglass ene-adhesive ye-acrylic engangamakhemikhali |
Ifilimu ehlanzekile ihlukanisa abezindaba ezonakalisayo; Indwangu ye-fiberglass ithuthukisa ukuqina; ama-lap joints adinga ukuqiniswa kwezingqimba eziningi |
Izinkombandlela Zokwakha Nezokuphepha Ezibalulekile
1. Ukwelashwa kwangaphambili kwendawo - isisekelo sokubopha
Ukukhipha amafutha ngokuphelele, ukususwa kokugqwala, nokomisa kuyadingeka. Sula izindawo nge-acetone noma utshwala okulandelwa ukubhakwa komlilo okusheshayo ukuze uphindaphinde amandla okubopha. Lokhu kususa ukungcola futhi kusebenze indawo yensimbi ukuze inamathele kakhulu.
2. Izendlalelo ezigoqekayo nezimazombezombe
okungenani izendlalelo ezimazombezombe ezingu-2-3 ukuze kuvikelwe amakhemikhali ngokugqagqana okungama-50% indilinga ngayinye. Kudingeka Iziphetho zetheyiphu kufanele ziqiniswe ngetheyiphu ye-PTFE efanayo noma izibopho zekhebula lensimbi engagqwali ukuze kuvinjelwe ukuxebuka okugcwele ngemva kokungena kokunamathelayo ngabezindaba.
3. Umkhawulo wokuphepha - nini ukugwema i-PTFE tape ngokuphelele
Kwimidiya elandelayo eyeqisayo, wonke amatheyipu anezinto ezinamathelayo aziphephile :
Okunye: Shintshela kulayini ogcwele we-PTFE noma izimbotshana ezingaguquki ezishiselwe (akukho okunamathelayo).
4. Izinyathelo zokulwa ne-static kanye nezingaqhumi
Uma ipayipi lidlulisa izinto ezivuthayo futhi ukunqwabelana okumile kungase kwenzeke, khetha itheyiphu ye-PTFE engaguquguquki (imvamisa emnyama mnyama ene-carbon filler, ukumelana nendawo engu-10⁶-10⁹ Ω) ukuze uhlakaze ukushajwa okumile ngokuphephile.
Isifinyezo – Umhlahlandlela osheshayo wokukhetha i-PTFE Tape for Chemical Applications
Uma imvelo yakho i... |
Khetha... |
Gwema... |
200-260°C, ama-asidi/ama-alkali/umusi |
I-Silicone PSA + i-fiberglass substrate |
I-Acrylic PSA (izokwehlisa) |
120-150 ° C, izinyibilikisi eziphilayo |
I-Acrylic PSA (i-solvent-resistant) |
I-Silicone PSA (ivuvukala kuma-solvents) |
>150°C, izinyibilikisi eziphilayo |
Ifilimu ye-PTFE ehlanzekile + ukulungiswa komshini |
Noma iyiphi itheyiphu yokunamathela |
HF, abilayo >80% alkali, ClF₃ |
I-PTFE-only lining (akukho okunamathelayo) |
Noma iyiphi itheyiphu ene-organic adhesive |
Izinto ezivuthayo, ingozi emile |
Itheyiphu ye-PTFE ye-Anti-static (egcwele i-carbon). |
Itheyiphu evamile engaqhubeki |
Ukuvalwa kwentambo, ukuvala igebe |
Weqe itheyipu yefilimu ye-PTFE emsulwa |
I-tape eqiniswe nge-Fiberglass |
I-Aokai PTFE inikezela ngobubanzi obugcwele bamateyipu e-PTFE okusetshenziswa kwamakhemikhali – i-silicone PSA yesevisi ye-acid/alkali yezinga eliphezulu, i-acrylic PSA yokumelana nezinyibilikisi, kanye namamaki aphikisana ne-static. Xhumana nathi ngemidiya yakho yamakhemikhali, izinga lokushisa, nezimfuneko zemishini ukuze ukhethe okufanelayo.
Okuqukethwe okungenhla kwezobuchwepheshe kunikezwa ngu I-Jiangsu Aokai New Materials Technology Co., Ltd.
Uma udinga imininingwane eningiliziwe, amakesi ohlelo lokusebenza nezixazululo ezenziwe ngokwezifiso zohlu oluphelele lomkhiqizo wethu ohlanganisa i-PTFE indwangu yokushisa ephezulu, i-PTFE high-temperature adhesive tape, PTFE high-temperature mesh belt, ibhande lokucindezela ukushisa elingenamthungo, indwangu ye-PTFE enohlangothi olulodwa, ibhande lokuhambisa elikwazi ukumelana nokushisa okuphezulu kanye ne-fiber engavimbeli ukushisa, sicela usithinte nge-fiberglass ngezansi.
Sihlala sinamathela kufilosofi yesevisi egxile ekuqeqesheni nasekuthembekeni, sinikeza ngenhliziyo yonke izixazululo zezimboni kanye nenkonzo yamakhasimende ecabangelayo kubo bonke ozakwethu!
