Intshayelelo:
Umbhobho wePolytetrafluoroethylene (PTFE) yimveliso eguquguqukayo kakhulu enokubonelela ngeendlela ezahlukeneyo zokusetyenziswa kumashishini amaninzi ahlukeneyo. Wenziwa kusetyenziswa indlela yokukhupha intlama. Umbhobho wePTFE owenziwe yintlama yokukhupha intlama uguquguqukayo. Unokwenza imibhobho yePTFE enobubanzi obungaphakathi obuyi-0.3 mm ukuya kutsho kwi-100 mm kunye nobukhulu bodonga obuyi-0.1 mm ukuya kwi-2 mm.Umbhobho we-PTFEIzinzile kakhulu kwiikhemikhali, inokumelana nazo zonke ii-asidi ezinamandla, ii-alkali ezinamandla, ii-oxidants ezinamandla, kwaye ayisebenzisi izinyibilikisi ezahlukeneyo ze-organic. Ingasetyenziswa ngokuqhelekileyo ngaphakathi kwe--60℃～+260℃, inokumelana nokugqwala okuthembekileyo nokugqwesileyo. Ingathutha igesi enamandla egqwala kunye nolwelo kubushushu obuphezulu. Ukongeza, emva kokuba iphathwe kubushushu obuphezulu be-260℃ kangange-1000h, iipropati zayo zoomatshini azinatshintsho lukhulu. I-PTFE inendawo yokugqwala ephantsi kakhulu, sisixhobo esihle sokulwa nokugqwala, esizithambisa ngokwaso, i-static friction coefficient yayo ingaphantsi kwe-dynamic friction coefficient, ngoko ke i-bearing eyenziwe kuyo ineengenelo zokuxhathisa okuphantsi kokuqala kunye nokusebenza okuzinzileyo. Ngenxa yokuba i-PTFE ayi-polar, ayitshisi ubushushu kwaye ayifunxi. Ikwanayo nokumelana okuhle kokwaluphala, ukunganamatheli kwaye ayitshisi. Oku akunakuthathelwa indawo ngamanye amapayipi.
Le ntshayelelo ilandelayo yindlela esetyenziswa ngayo ipayipi ye-PTFE kumashishini ahlukeneyo:
1. Ishishini leekhemikhali
Ngenxa yokuba zinokumelana okuphezulu kweekhemikhali phantse kuzo zonke iikhemikhali,Imibhobho ye-PTFElukhetho olufanelekileyo kwishishini leekhemikhali. Kubandakanya ishishini le-semiconductor. Inkqubo yanamhlanje yokuvelisa i-semiconductor ifuna ukulinganiswa okukhuselekileyo kunye nokuthuthwa kolwelo olubolayo (ii-asidi kunye ne-alkalis). Ezi ziya konakalisa kakhulu umbhobho wokuhambisa ngexesha elifutshane.
2. Ishishini lezonyango
Iimpawu ezikhethekileyo zeepayipi zePTFE ziquka nolwakhiwo lomphezulu olulula ukuwucoca. Kwiminyaka elishumi edlulileyo, iipayipi zePTFE bezisetyenziswa kakhulu kwizixhobo zonyango. Ngenxa yokungalingani okuphantsi kwetyhubhu yePTFE, oku kuthetha ukuba umphezulu wayo uthambile kakhulu kwaye awuyi kufihla okanye uncede iintsholongwane zikhule. Phakathi kwazo, iipayipi zisetyenziselwa ukufunxa, ii-catheters, ii-pipettes kunye nee-endoscopes. Ikwavelisa izixhobo ezahlukeneyo kunye nezixhobo, ezifana neepayipi zokukhupha amanzi, ii-ventilators, amacici, irabha yeapile, iiglavu kunye nezinye izicubu ezenziweyo. Ukongeza, izixhobo ezininzi ezisebenzayo ezisetyenziswa ngoogqirha kuhlalutyo lwebhayoloji yomntu nazo zenziwe ngezinto zePTFE.
3. Ishishini leenqwelo-moya
Iipayipi ze-PTFE azitshisi ii-fluoropolymers. I-coefficient yazo ephantsi yokungqubana ivumela ukuba zisebenze phantsi kobushushu obuphezulu kunye noxinzelelo. Yiyo loo nto ezi tyhubhu zisetyenziswa lishishini leenqwelo-moya ukusonga iingcingo kunye neentambo.
4. Ishishini leemoto
Kwiinjini zeemoto, imibhobho yeoyile esemgangathweni ophezulu eyenziwe nge-PTFE isetyenziselwa ukufudumeza amafutha kunye neereyile zepetroli. Okwangoku, iipayipi zebrake ezithengiswayo ziindawo zokuhlanganisa iipayipi zebrake ezineejoyinti. Ngokweentlobo ezahlukeneyo zeebhuleki zemoto, yahlulwe yaba ziipayipi zebrake zehydraulic, iipayipi zebrake zepneumatic kunye neepayipi zebrake zevacuum. Ngokwezinto ezisetyenzisiweyo, yahlulwe yaba yipayipi yebrake ye-PTFE, ipayipi yebrake yerabha kunye nepayipi yebrake yenylon. Ipayipi yebrake yerabha ineengenelo zokuqina okuqinileyo kunye nokufakelwa okulula, kodwa ingxaki kukuba umphezulu ulungele ukuguga emva kokusetyenziswa ixesha elide. Kwimeko yobushushu obuphantsi, amandla okuxinana kwepayipi yebrake yenylon ayabuthathaka, ukuba ichatshazelwa ngamandla angaphandle, kulula ukuphuka. Nangona kunjalo,Ityhubhu ye-PTFE kaBesteflonineempawu zokumelana nobushushu obuphezulu kunye nobushushu obuphantsi, ukumelana noxinzelelo oluphezulu, ukumelana nokukrweleka, kunye nokumelana nokugqwala, okwenza ukuba ibe nobomi obude benkonzo kwaye ayidingi ukutshintshwa rhoqo. Ingalungisa ukusilela kwezinye izinto ezimbini
5. Ishishini lombane
Iipayipi ze-PTFE zineempawu zombane ezibalaseleyo. Zineempawu eziphezulu ze-dielectric constant kunye ne-low loss factor kuluhlu olubanzi kakhulu lwee-frequency. Ke ngoko, iipayipi ze-PTFE zisetyenziswa njengezinto zokukhusela ubushushu obuphezulu, ezikumgangatho ophezulu kwiintambo kunye neentambo, kunye nezinto zokufudumeza zombane kunye nee-sensors zobushushu. Kwishishini lombane, ukuze kugqunywe iintambo kunye neentambo, kusetyenziswa iipayipi ze-PTFE ezikumgangatho ophezulu, ezinokumelana nobushushu obuphezulu kwaye zikhusele iintambo kuyo nayiphi na into yokusikwa. Ukongeza, ezi payipi ziza ngemibala eyahlukeneyo ukunceda ukuchonga iintambo ekhaya okanye eofisini.
6. Ishishini lokutya
Ngenxa yeempawu zayo ezilula ukuzicoca nokunganamatheli, iipayipi ze-PTFE polytetrafluoroethylene zingasetyenziswa kwishishini lokutya. Ngokukodwa, iityhubhu ezenziwe nge-PTFE engazaliswanga zifanelekile ngenxa yokungathathi cala kwazo ngokwasemzimbeni kwaye zihambelana nezikhokelo ze-US Food and Drug Administration. Ke ngoko, kuye kwangqinwa ukuba ayinabungozi xa idibana neplastiki kunye naluphi na uhlobo lokutya. Ke ngoko, iityhubhu ze-PTFE zihlala zisetyenziswa kwiimashini zekofu zemveli. Ukongeza, kusetyenziswa iityhubhu zespaghetti ezibizwa ngokuba zii-single-chamber okanye ii-multi-chamber design kunye neetyhubhu ezincitshiswayo. Iimveliso ze-PTFE zinokucocwa kusetyenziswa zonke iindlela eziqhelekileyo.
7. Ishishini leempahla
Ukudluliselwa kweekhemikhali kwiipayipi ezisetyenziswa kwishishini lempahla kunokubangela ukugqwala. Ke ngoko, ukuze kuthintelwe le ngxaki, kusetyenziswa ityhubhu ye-TPFE, kwaye kufakwa i-PTFE coating kwi-rolle yempahla.
Ishishini lokuPrinta le-8.3D
Kwiprinta ye-3D, i-filament kufuneka idluliselwe kwi-nozzle yokuprinta ekufuneka yenziwe kubushushu obuphezulu. Ekubeni i-PTFE tube ine-coefficient yobushushu obuphezulu kunye neempawu ezinganamatheliyo, inceda ukushelela ngokulula izinto kwi-nozzle, ngoko ke yeyona polymer ifunekayo kwishishini lokuprinta le-3D.
Indlela i-PTFE engenazo i-alkaline ivumela ukuba isetyenziswe kwishishini leekhemikhali, apho ukudluliselwa kolwelo olunobuthathaka kakhulu kuyinto eqhelekileyo. I-Zhongxin Fluorine plastic Industry Co., Ltd. Igxile ekuveliseni iipayipi ze-PTFE ezikumgangatho ophezulu kangangeminyaka eli-16.
Uphendlo olunxulumene nepayipi ye-ptfe:
Ixesha lokuthumela: Epreli-07-2021