Mochini o phoroselang oa polyurethane ke sesebelisoa se ikhethileng bakeng sa infusion le foam ea foam ea polyurethane.Ha feela karolo ea polyurethane lisebelisoa tse tala (karolo ea isocyanate le karolo ea polyether polyol) matšoao a ts'ebetso a fihlela litlhoko tsa foromo.Lihlahisoa tsa foam tse ts'oanang le tse tšoanelehang li ka hlahisoa ka mochini oa polyurethane o phahameng le o tlase oa khatello.E entsoe ka polasetiki e phophomang ka lik'hemik'hale tse phophomang ka polyether polyol le polyisocyanate ka pel'a li-additives tse fapaneng tsa lik'hemik'hale tse kang ho foaming agent, catalyst le emulsifier.
Litlhokomeliso tsa ts'ebetso eapolyurethane foaming mochine
1. Thepolyurethane foaming mochineba tlameha ho roala likhalase tse sireletsang, liaparo tsa mosebetsi le likatiba tsa mosebetsi, le liatlana tsa rabara ha ba sebelisa lisebelisoa tsa motsoako oa polyurethane A le B.Tikoloho ya mosebetsi e tlameha ho ba le moya o hlwekileng le o hlwekileng.Ha mocheso oa tikoloho o phahame, ntho e phophomang ka har'a polyurethane A e tla fetoha mouoane ka mokhoa o itseng ebe e hlahisa khatello, kahoo sekoahelo sa ho qeta se lokela ho buloa pele ho lokolla khatello ea khase, ebe sekoahelo sa moqomo se lokela ho buloa.
2. Ha mochine oa polyurethane foaming o e-na le litlhoko tse thibelang lelakabe bakeng sa foam, mochine oa polyurethane foaming o ka sebelisa sekontiri se eketsang mollo.Palo ea ho eketsoa ha lelakabe le tloaelehileng la lelakabe ke 15-20% ea boima ba thepa e tšoeu, 'me lelakabe la mollo le eketsoa ho thepa ea polyurethane A.E tlameha ho tsosoa ka ho lekana pele ho foam.
3. Nakong ea ts'ebetso ea matsoho ea mochini oa foaming oa polyurethane, lekanya ka nepo lisebelisoa tse kopantsoeng tsa polyurethane A le B ka tekanyo 'me u li tšollele ka har'a setshelo ka nako e le' ngoe.Ka mor'a ho hlohlelletsa metsotsoana e 8 ho isa ho e 10 ka moferefere o fetang 2000 rpm, tšela ka har'a hlobo le foam.Nako ea ho senya e itšetlehile ka litlhoko tsa sehlahisoa, botenya ba foam, joalo-joalo.
4. Ha letlalo le kopana le thepa e kopantsoeng ea polyurethane A, e lokela ho hlatsuoa ka sesepa le metsi.Ha mochine oa polyurethane foaming o sebelisa thepa ea polyurethane B (ho na le ho teneha ho itseng), u se ke ua hema mouoane oa eona 'me u se ke ua o fafatsa letlalong le mahlo.Ha ho tluoa tabeng ea letlalo le mahlo, e tlameha ho hlakoloa ka k'hothone ea bongaka hang-hang, ebe e hlatsoa ka metsi a mangata ka metsotso e 15, ebe e hlatsoa ka sesepa kapa joala.
Tsebo ea ho reka mochini oa polyurethane foaming
1. Utloisisa ka ho feletseng mofuta oa mochine o phophomang maqeba
Molao-motheo oa motheo oa mochini oa polyurethane foaming ke ho kenya khase ka har'a tharollo ea metsi ea ntho e phophomang, empa mefuta e fapaneng ea metjhini e phophomang e hlahisa khase ka litsela tse fapaneng.Ka mohlala, mofuta o fokolang oa lebelo le tlaase o itšetlehile ka li-blades tse potolohang butle-butle ho hlahisa khase, e leng se hlahisang tlhahiso e nyenyane ea bubble le bokhoni bo tlaase ba ho foamisa;mofuta o nang le lebelo le phahameng o itšetlehile ka mochine o potolohang ka lebelo le phahameng ho tsoa mali, boholo ba li-bubble bo ke ke ba laoloa, 'me foam ha e lekane;mefuta ea khatello e phahameng le e mahareng e tlase e hlahisa foam Lebelo le phahameng, ts'ebetso e phahameng, junifomo le li-bubble tse nyane.
2. Mekhahlelo ea mantlha ea mochini o phoroselang oa polyurethane:
1) Kotulo: Kotulo ke palo ea foam e hlahisoang, e lokelang ho ba holimo hanyenyane ho feta palo e hlokahalang ea foam ka 20%.E le hore u tlohe sebaka sa palo ea foam e hlahisoang, moeli o ka tlaase o lokela ho sebelisoa e le motheo oa ho bala le ho bala, 'me moeli o ka holimo o ke ke oa sebelisoa.
2) Bokhoni bo kentsoeng ba mochini oa polyurethane foaming: matla a kentsoeng ke matla a kentsoeng kaofela.Parameter ena ke ea bohlokoa haholo bakeng sa ho bala ho ikamahanya le maemo a potoloho ea motlakase ho kakaretso ea tšebeliso ea matla.
3) Boholo le bophara ba mochini oa polyurethane foaming.
Nako ea poso: Jul-27-2022