Inqubo yokukhiqiza yepayipi le-PTFE ithi: PTFE, i-extrusion aid → ukuxuba → ukucindezela → ukomisa → sintering → ukupholisa → umkhiqizo
Inqubo yokubumba yamapayipi e-PTFE ihlanganisa indlela yokusunduza, indlela yokukhipha, indlela ye-hydraulic, indlela yokushisela, indlela yokujika, njll., phakathi kwazo indlela yokusunduza iyindlela eyinhloko.Ngokuvamile, i-resin ye-PTFE ehlakazekile enosayizi wezinhlayiyana ongu-500μm kanye nokuminyana okusobala kuka-0.45gml ~0.55gml kuyasetshenziswa.Emapayipini amancane anobubanzi, sebenzisa i-resin enokucindezela okukhulu, futhi kumapayipi amakhulu amakhulu, sebenzisa inhlaka enokucindezela okuncane.Usizo lokukhama ngokuvamile lukhetha ama-mineral spirits angama-200 nama-260.Ukucutshungulwa kwesibili kwePTFE amashubhuingakhiqiza ishubhu eshibilikayo ye-PTFE, ishubhu elivunguzayo le-PTFE, ishubhu le-hydraulic PTFE, njll.
I-Polytetrafluoroethylene tube yenziwe nge-polytetrafluoroethylene ehlakazekile resin ekamelweni lokushisa kusetshenziswa i-solvent ephilayo njenge-extrusion aid, bese yomiswa futhi i-sintered.Ngokusho kobubanzi bepayipi, ingahlukaniswa ngezinhlobo ezimbili: ipayipi evamile kanye nepayipi elincane.I-diameter yangaphakathi yeshubhu evamile ingu-4mm, futhi ububanzi bangaphakathi be-micro tube bungaphansi noma bulingana no-4mm.
Inqubo yokukhiqiza yepayipi le-PTFE ithi: PTFE, aid extrusion → ukuxuba → ukucindezela → ukomisa → sintering → ukupholisa → umkhiqizo.
Amapayipi e-Polytetrafluoroethylene anamandla amahle wemishini.Ama-gaskets ama-gaskets ayisicaba, ama-gaskets amise okwe-V, izindandatho ze-piston, ama-valve gaskets ebhola, njll., ezenziwePTFE izinduku, amashubhu, namapuleti ngokuphenduka ngomshini noma ukusika, amelana nokugqwala , Ukumelana nokungaqhubeki.
1. Amapayipi e-Teflon ngokuvamile asebenzisa indlela yokubumba yokucindezelwa, futhi ukubumba kwe-plunger extrusion nakho kungasetshenziswa.I-resin etholwe indlela ye-dispersion polymerization ingakhiwa ngokunamathisela i-extrusion kanye ne-calendering.
2. I-PTFE inenani le-pH lika-0-14 (ngaphandle kwezinsimbi ze-alkali ezincibilikisiwe kanye ne-fluorine ngaphansi kwezinga lokushisa eliphezulu nokucindezela okuphezulu), okungaba namandla amahle okusebenza phakathi kuka-100°C no-100°C.
3. Izimo zenqubo ethize ukuthi ingcindezi ye-preforming iyahlukahluka ngokuma nobukhulu bomkhiqizo.Kodwa ngokuvamile isetshenziswa.I-Teflon braided packing yi-8-34.3MPa, futhi i-resin ene-filler ingu-29.4-93MPa.Ngoboya obukhulu obunobukhulu obungaba ngu-600mm endaweni yokucindezela, kusekhona isikhathi sokubamba ingcindezi ye-20-30min.Qaphela ukuthi uma izinga lokushisa lingaphansi kuka-185°C.I-Teflon tubing izoba brittle.I-PTFE gasket ehlanzekile iwumkhiqizo wokuvala ohlanzekile ongeke ungcolise noma iyiphi into ehlangana nayo futhi ungasetshenziswa kabanzi ekudleni, emithini nakwezinye izimboni.
Isikhathi sokuthumela: Aug-04-2020