1.Ukwenza i-TFE
2.Ukumiswa kwePolymerization
3.Ukuhlakazeka kwe-polymerization
Ukwenza i-TFE
1 Abakhiqizi be-PTFE baqala ngokuhlanganisa i-TFE.Izithako ezintathu ze-TFE, i-fluorspar, i-hydrofluoric acid, ne-chloroform zihlanganiswe ekamelweni lokusabela kwamakhemikhali elishiselwe phakathi kuka-1094-1652°F (590-900°C).Igesi eliwumphumela libe selipholiswa, futhi ligaywe ukuze kukhishwe noma yikuphi ukungcola.
Ukumiswa kwePolymerization
2 Igumbi lokusabela ligcwele amanzi ahlanzekile kanye ne-agent ephendulayo noma i-initiator, ikhemikhali ezosusa ukwakheka kwe-polymer.I-TFE ewuketshezi ifakwa ngamapayipi egunjini lokusabela.Njengoba i-TFE ihlangana nomqalisi, iqala ukwenza i-polymerize.I-PTFE ewumphumela yakha izinhlamvu eziqinile ezintanta phezu kwamanzi.Njengoba lokhu kwenzeka, i-reaction chamber iyanyakaziswa ngomshini.Ukusabela kwamakhemikhali ngaphakathi kwegumbi kunikeza ukushisa, ngakho igumbi lipholiswa ukuhamba kwamanzi abandayo noma okunye ukupholisa ejazini elizungeze ingaphandle layo.Izilawuli zivala ngokuzenzakalelayo ukunikezwa kwe-TFE ngemva kokufinyelelwa kwesisindo esithile ngaphakathi kwegumbi.Amanzi akhishelwa ngaphandle kwegumbi, kushiye ingxubevange ye-PTFE enezintambo ezithi zifane nokhukhunathi oshiyiwe.
3 Okulandelayo, i-PTFE iyomiswa futhi idliwe emshinini wokugaya.Isigayo sihlikihla i-PTFE ngezindwani ezizungezisayo, ikhiqize into ehambisana nokuvumelana kukafulawa kakolweni.Le mpushana emihle kunzima ukuyibumba."Inokugeleza okungalungile," okusho ukuthi ayikwazi ukucutshungulwa kalula kumishini ezenzakalelayo.Njengofulawa kakolweni ongahluziwe, ungase ube nazo zombili izigaxa namaphakethe omoya.Ngakho-ke abakhiqizi baguqula le mpushana ecolekileyo ibe ama-granules amakhulu ngenqubo ebizwa ngokuthi i-agglomeration.Lokhu kungenziwa ngezindlela eziningana.Enye indlela ukuxuba i-PTFE powder ne-solvent efana ne-acetone bese uyiphonsa esigubhu esijikelezayo.Izinhlamvu ze-PTFE zinamathelana, zakha ama-pellets amancane.Ama-pellets abe esemiswa kuhhavini.
4 Ama-pellets e-PTFE angabunjwa abe yizingxenye kusetshenziswa amasu ahlukahlukene.Nokho, i-PTFE ingase ithengiswe ngobuningi esivele ibunjwe ngaphambili ibe okuthiwa amabhilidi, okungamasilinda aqinile e-PTFE.Amabhilidi angaba ngu-5 ft (1.5 m) ubude.Lawa angasikwa abe amashidi noma amabhlogo amancane, ukuze aqhubeke nokubumba.Ukwenza i-billet, amapellets e-PTFE athululelwa esikhunjini sensimbi engagqwali eyicylindrical.Isikhunta silayishwa emshinini wokunyathelisa we-hydraulic, into efana nekhabethe elikhulu elifakwe inqama enesisindo.Inqama yehlela phansi esikhunjeni bese isebenzisa amandla ku-PTFE.Ngemva kwesikhathi esithile, isikhunta siyasuswa kwabezindaba bese i-PTFE ingabunjwa.Ivunyelwe ukuphumula, bese ifakwa kuhhavini ngesinyathelo sokugcina esibizwa ngokuthi i-sintering.
5 I-PTFE ebunjiwe ishiswa kuhhavini oshisayo amahora ambalwa, ize ifinyelele kancane kancane ekushiseni okungaba ngu-680°F (360°C).Lokhu kungaphezulu kwendawo yokuncibilika ye-PTFE.Izinhlayiya ze-PTFE ziyahlangana futhi okokusebenza kufana nejeli.Bese i-PTFE ipholiswa kancane kancane.I-billet eqediwe ingathunyelwa kumakhasimende, azoyisika noma ayiphuce ibe yizicucu ezincane, ukuze kuqhutshekwe nokucubungula.
Ukuhlakazeka kwe-polymerization
6 I-Polymerization ye-PTFE ngendlela yokusabalalisa iholela ekubeni yimpushana ecolekile noma into efana ne-paste, ewusizo kakhulu ekuhlanganisweni nasekuqedeni.I-TFE yethulwa kwireactor egcwele amanzi kanye nekhemikhali yokuqala.Esikhundleni sokunyakaziswa ngamandla, njengasenqubweni yokumiswa, ikamelo lokusabela liyanyakaza kuphela ngobumnene.I-PTFE yakha ubuhlalu obuncane.Amanye amanzi ayasuswa, ngokuhlunga noma ngokwengeza amakhemikhali abangela ukuthi ubuhlalu be-PTFE buhlale.Umphumela uba ubisi olubizwa ngokuthi i-PTFE dispersion.Ingasetshenziswa njengoketshezi, ikakhulukazi ekusetshenzisweni okufana nokuqedwa kwendwangu.Noma ingase yomiswe ibe impushana ecolekile esetshenziselwa ukunameka insimbi
Isikhathi sokuthumela: Jan-19-2019