Kupaka Powder Thermosetting Kwa Kupopera Kwa Electrostatic
Kufotokozera mwachidule za zokutira ufa
Mawonekedwe a zokutira ufa kwa electrostatic kupopera luso luso ndi osiyana kwambiri zokutira yachibadwa ndipo alipo mu boma ufa wabwino. Chifukwa palibe zosungunulira, amatchedwa zokutira ufa. Makhalidwe akuluakulu a zokutira ufa ndi: zopanda vuto, zogwira mtima, zopulumutsa zinthu komanso zachilengedwe.
Thermosetting ufa ndi mtundu womwe umagwiritsidwa ntchito kwambiri wa electrostatic kupopera ufa ndi imodzi mwazoyamba kupangidwa ndikugwiritsidwa ntchito. Ili ndi kuuma kwakukulu, kukana kwambiri kwamankhwala komanso kukana kutentha kwambiri, ndipo imagwiritsidwa ntchito kwambiri pakupangira mafakitale, kupanga, zomangamanga ndi zina. Nthawi zambiri amagwiritsidwa ntchito popanga ma thermosetting powders monga epoxy, polyester, acrylate ndi polyether.
Chiwonetsero cha Zamalonda
Magulu abwinobwino
Zopaka za electrostatic kupopera mbewu mankhwalawa nthawi zambiri zimagawidwa m'magulu awiri: zokutira za ufa wa thermoplastic ndi zokutira za ufa wa thermosetting.
1. Thermoplastic ufa wokutira
Thermoplastic powder yokutira imakhala ndi thermoplastic, pigment, filler, binder ndi stabilizer. Thermoplastic ufa zokutira monga: polyethylene, polypropylene, poliyesitala, PVC, chlorinated polyether, polyamide, mapadi, poliyesitala ndi zina zotero.
2. zokutira za ufa wa thermosetting
Kupaka kwa ufa wa thermosetting kumakhala ndi utomoni wa thermosetting, wochiritsa, pigment, filler ndi zowonjezera. Thermosetting ufa zokutira monga: epoxy utomoni, epoxy polyester, poliyesitala, polyurethane, akiliriki utomoni ndi zina zotero.
Ubwino wake
Pulasitiki ufa akhoza kugawidwa mu thermoplastic ufa ndi thermosetting ufa; ufa wakunja ndi ufa wamkati; ufa wosamva kutentha kwambiri komanso ufa wochepa kutentha.
1. Ubwino wa ufa wa pulasitiki wa thermoplastic ndi kulimba, kupindika bwino, kukana mankhwala, ndipo angagwiritsidwe ntchito popaka filimu yophimba wandiweyani.
2. Ubwino wa ufa wamkati ndikuti ntchitoyo ndi yofooka kuposa ufa wakunja, ukhoza kugwiritsidwa ntchito popaka mkati mwa workpiece, mtengo wake ndi wotsika mtengo.
3. Kutentha kwakukulu kwa ufa kumatha kupirira kutentha kwa madigiri a 200 kwa nthawi yaitali ndipo chophimba sichimasintha mtundu, thupi ndi makina amtundu wovomerezeka.
4. Thermosetting ufa pa firiji si kufewetsa ndi agglomeration, zabwino makina kubalalitsidwa, zosavuta kupanga lathyathyathya ❖ kuyanika filimu.
5. Panja ufa ndi woyenera kupaka workpiece panja, ndi antioxidant, anti-ultraviolet ray, anti-asidi ndi alkali chifunga ndi mvula, kuwonjezereka kwabwino kwa kutentha ndi ntchito yochepetsera.
6. Ufa wotentha wochepa umatha kuyika filimu yokutira pa madigiri 80-150 Celsius, ndipo ungagwiritsidwe ntchito pamatabwa ndi pulasitiki.