Emikhiqizweni ye-PTFE, egcwalisiweImikhiqizo ye-PTFEzingumkhiqizo omkhulu kunayo yonke, emazweni angaphandle agcwalisiwe i-PTFE ivamise ukuqedwa yi-PTFE resin production plant, njenge-Germany Hoechst HosTaflonTF4000 series, HosTaflonTF3000 series and HosTaflon2000 series.E-China, njengoba ubuchwepheshe bokukhiqiza inhlaka ye-PTFE busala ngemuva kobuchwepheshe bokucubungula, ubuchwepheshe bokugcwalisa i-PTFE benziwa endaweni yokucubungula umkhiqizo.Ngokungeza izihlungi ezihlukene ezifana ne-inorganic, insimbi kanye ne-polymer ku-PTFE resin ukuthuthukisa ukumelana nokucindezela, ukumelana nokugqoka, ukumelana nokugeleza okubandayo, ukumelana nokushisa, ukuzinza kwe-PTFE.Imikhiqizo egcwele uma kuqhathaniswa ne-PTFE ehlanzekile, ukumelana nokucindezela kukhuphuke izikhathi ezingu-5 kuya kwezingu-10, ukumelana nokugqoka kukhuphuke izikhathi ezingu-1000, i-coefficient of linear expansion yehliswe ngo-80%, ukuqhutshwa kwe-thermal kukhuphuke izikhathi ezingu-5, futhi kunciphisa ukumelana nevolumu nokumelana nendawo, ikakhulukazi. esetshenziswa embonini yemishini kumabheringi angenawo uwoyela okugcoba, ama-bushings, amasongo e-piston, iziqondiso zamathuluzi omshini, njll. Eminyakeni yamuva nje, amakhemikhali angaphandle aphikisana nokugqwala, agcwele i-PTFE njengepayipi, ama-valve, amaphampu, njll. i-lining ikhula ngokushesha, okuyindawo entsha yesicelo ye-PTFE egcwalisiwe.
Ngokwalezi zidingo ezivame ukusetshenziswa ama-fillers yilezi: i-glass fiber, i-carbon fiber, i-graphite, isihlabathi se-quartz, i-molybdenum disulfide, i-amorphous carbon, i-calcium fluoride, i-bronze powder, i-ceramics, i-polyimide, i-polyphenylene, i-poly-p-hydroxyformate nokunye.
Imikhiqizo ye-PTFE egcwele ivamise ukubunjwa: ikhwalithi yokugcwaliswaImikhiqizo ye-PTFEkuncike ekukhethweni kokugcwalisa i-resin, ukwakheka kwefomula, izinga le-homogeneity yokuxubana kwezinto kanye nezinye izici.Njengamanje kunezindlela ezintathu zokuxuba ezisetshenziselwa ukugcwalisa i-PTFE: (1) inqubo yokuxuba okomile idinga idivayisi yokuxuba esheshayo, efanayo ngaphandle kwendawo efile, esebenza ezidingweni ezijwayelekile zomkhiqizo.(2) ukuxuba kwe-solvent, i-solvent i-acetone noma i-methanol, ye-PTFE egcwele ingilazi.(3) ukuxuba okumanzi: ukusetshenziswa kwale nqubo yokubumba imikhiqizo enamandla amakhulu emishini, ukugqoka okuphansi, ukumelana nokugqwala okuhle.Ingcindezi yokubumba yemikhiqizo ye-PTFE egcwele incike esilinganisweni sevolumu yokugcwalisa ku-PTFE, njengalokhu: ngengcindezi yokubumba yokugcwalisa engu-5% yebha engu-250;nge-6% kuya ku-10% ingcindezi yokubumba i-filler ye-350 bar;nge-12% kuya ku-25% ingcindezi yokubumba i-filler ye-500 bar;ngengcindezi yokubumba yokugcwalisa engaphezulu kuka-25% yebha engu-700.Inqubo ye-sintering yemikhiqizo egcwalisiwe iyafana neye-PTFE emsulwa.Kodwa imikhiqizo egcwele equkethe i-MoS2 idinga ukucwiliswa endaweni yomoya engu-360 ℃, noma ukucwiliswa endaweni ye-nitrogen ku-380℃.Imikhiqizo egcwele equkethe i-glass fiber ifanele ukucwiliswa ku-nitrogen medium.
Isikhathi sokuthumela: Feb-11-2022