Polypropylene glycol (PPG)ke polymer e seng ea ionic e fumanoang ka polymerization ea propylene oxide e bulang selikalikoe. E na le thepa ea mantlha e kang ho qhibiliha ha metsi ho fetoloang, mefuta e mengata ea viscosity, botsitso bo matla ba lik'hemik'hale, le chefo e tlase. Ts'ebeliso ea eona e akaretsa liindasteri tse ngata, ho kenyeletsoa lik'hemik'hale, meriana, lik'hemik'hale tsa letsatsi le letsatsi, lijo le tlhahiso ea indasteri. Li-PPG tsa boima bo fapaneng ba limolek'hule (hangata li tloha ho 200 ho isa ho tse fetang 10,000) li bontša liphapang tse kholo tsa ts'ebetso. Li-PPG tse boima bo tlase ba limolek'hule (joalo ka PPG-200 le 400) li qhibiliha haholoanyane metsing 'me li sebelisoa hangata e le li-solvents le li-plasticizer. Li-PPG tse boima bo mahareng le bo phahameng ba limolek'hule (joalo ka PPG-1000 le 2000) li qhibiliha haholoanyane ka oli kapa li tiile hanyane 'me li sebelisoa haholo-holo ho emulsification le synthesis ea elastomer. Se latelang ke tlhahlobo e qaqileng ea libaka tsa eona tsa mantlha tsa ts'ebeliso:
1. Indasteri ea Polyurethane (PU): E 'ngoe ea Lisebelisoa tse Tala tsa Bohlokoa
PPG ke thepa ea bohlokoa ea polyol bakeng sa tlhahiso ea thepa ea polyurethane. Ka ho sebetsana le li-isocyanate (tse kang MDI le TDI) le ho li kopanya le li-extender tsa ketane, e ka hlahisa mefuta e fapaneng ea lihlahisoa tsa PU, e akaretsang mefuta eohle ea lihlopha tsa foam e bonolo ho isa ho e thata:
Li-elastomer tsa polyurethane: PPG-1000-4000 li sebelisoa hangata ho lokisoeng ha polyurethane ea thermoplastic (TPU) le li-elastomer tsa polyurethane tse entsoeng ka cast (CPU). Li-elastomer tsena li sebelisoa liphatleng tsa lieta (joalo ka liphatleng tse bohareng tsa lieta tsa lipapali), litiiso tsa mechini, mabanta a conveyor, le li-catheter tsa bongaka (tse nang le biocompatibility e ntle). Li fana ka ho hanyetsa ho khohlela, ho hanyetsa ho taboha le ho tenyetseha.
Liaparo/likhomaretsi tsa polyurethane: PPG e ntlafatsa ho tenyetseha, ho hanyetsa metsi, le ho khomarela ha liaparo 'me e sebelisoa penteng ea OEM ea likoloi, penteng ea indasteri e thibelang ho bola, le liaparo tsa lehong. Likhomaretsing, e eketsa matla a tlamahano le ho hanyetsa boemo ba leholimo, e leng se etsang hore e lokele litšepe tsa tlamahano, polasetiki, letlalo le thepa e 'ngoe.
2. Lik'hemik'hale tsa Letsatsi le Letsatsi le Tlhokomelo ea Botho: Lisebelisoa tse Sebetsang
PPG, ka lebaka la bonolo ba eona, thepa ea eona ea ho etsa emulsifying, le thepa ea eona ea ho nolofatsa letlalo, e sebelisoa haholo tlhokomelong ea letlalo, litlolong, sesepa le lihlahisoa tse ling. Lihlahisoa tse fapaneng tsa boima ba limolek'hule li na le mesebetsi e fapaneng:
Li-Emulsifier le Li-Solubilizer: PPG e boima bo mahareng ba limolek'hule (joalo ka PPG-600 le PPG-1000) hangata e kopanngoa le mafura a acid le li-ester e le emulsifier e seng ea ionic ka har'a litlolo, litlolo, li-shampoo le mekhoa e meng, e tsitsisa litsamaiso tsa metsi a oli le ho thibela karohano. PPG e boima bo tlase ba limolek'hule (joalo ka PPG-200) e ka sebelisoa e le sesebelisoa sa ho qhibiliha, e thusang ho qhala metsoako e qhibilihang ka oli joalo ka monko o monate le oli ea bohlokoa ka har'a metsoako ea metsi.
Li-moisturizer le Li-Emollients: PPG-400 le PPG-600 li fana ka phello e itekanetseng ea ho nolofatsa le maikutlo a khathollang, a sa ruruheng. Li ka nkela glycerin e itseng sebaka ka har'a li-toners le li-serum, li ntlafatsa ho thella ha sehlahisoa. Li-conditioner, li ka fokotsa motlakase o sa fetoheng le ho ntlafatsa boreleli ba moriri. Lisebelisoa tsa ho Hloekisa Lihlahisoa: Li-gel tsa ho hlapela le sesepa sa matsoho, PPG e ka fetola viscosity ea formula, ea ntlafatsa botsitso ba foam, le ho fokotsa ho teneha ha li-surfactants. Ho sesepa sa meno, e sebetsa e le humectant le thickener, e thibela peista ho oma le ho petsoha.
3. Litšebeliso tsa Meriana le tsa Bongaka: Litšebeliso tsa Polokeho e Phahameng
Ka lebaka la chefo ea eona e tlase le ho lumellana ha eona hantle (ho latela USP, EP, le litekanyetso tse ling tsa meriana), PPG e sebelisoa haholo mefuteng ea meriana le lisebelisoa tsa bongaka.
Dijari tsa Meriana le Dihlahiswa: PPG e boima bo tlase ba dimolek'hule (jwalo ka PPG-200 le PPG-400) ke sehlahiswa se setle haholo bakeng sa meriana e sa qhibiliheng hantle mme e ka sebediswa ho di-suspension tsa molomo le dienteng (tse hlokang taolo e tiileng ya bohloeki le ho tloswa ha ditshila tse sa bonahaleng), ho ntlafatsa ho qhibiliha ha meriana le ho fumaneha ha yona. Ho feta moo, PPG e ka sebediswa e le motheo wa sehlahiswa ho ntlafatsa ho lokollwa ha meriana.
Phetoho ea Thepa ea Bongaka: Linthong tsa polyurethane tsa bongaka (tse kang methapo ea mali ea maiketsetso, li-valve tsa pelo le li-catheter tsa moroto), PPG e ka fetola ho feto-fetoha ha metsi le ho lumellana ha lintho tse phelang, ea fokotsa karabelo ea 'mele ea ho itšireletsa mafung ha ka nako e ts'oanang e ntlafatsa ho tenyetseha ha thepa le ho hanyetsa ho bola ha mali. Lintho tse thusang meriana: PPG e ka sebelisoa e le karolo ea motheo litlolong le litlolong ho ntlafatsa ho kenella ha meriana letlalong 'me e loketse meriana ea letlalo (joalo ka litlolo tse thibelang likokoana-hloko le tsa steroid).
4. Setlolo sa Liindasteri le Mechine: Setlolo sa Ts'ebetso e Phahameng
PPG e fana ka mafura a matle haholo, thepa ea ho thibela ho tsofala, le ho hanyetsa mocheso o phahameng le o tlase. E boetse e lumellana hantle le oli ea diminerale le lintho tse ling tse eketsang, e leng se etsang hore e be thepa ea bohlokoa bakeng sa mafura a maiketsetso.
Oli ea Haeteroliki le ea Lisebelisoa: Li-PPG tse boima bo mahareng le bo phahameng ba limolek'hule (tse kang PPG-1000 le 2000) li ka sebelisoa ho etsa maro a haeteroliki a thibelang ho roaloa a loketseng litsamaiso tsa haeteroliki tse nang le khatello e phahameng mechineng ea kaho le lisebelisoa tsa mechini. Li boloka mokelikeli o motle haholo esita le mochesong o tlase. Lioling tsa li-gear, li ntlafatsa thepa ea ho thibela ho tsubella le ho thibela ho roaloa, li eketsa bophelo ba li-gear.
Metsi a ho Sebetsa ka Tšepe: PPG e ka sebelisoa e le tlatsetso ho maro a ho sebetsa ka tšepe le ho sila, e fana ka setlolo, ho pholisa le thibelo ea mafome, ho fokotsa ho senyeha ha lisebelisoa le ho ntlafatsa ho nepahala ha mechini. E boetse e ka bola (li-PPG tse ling tse fetotsoeng li fihlela tlhoko ea maro a ho seha a sireletsang tikoloho). Litlolo tse Ikhethang: Litlolo tse sebelisoang mecheng e nang le mocheso o phahameng, khatello e phahameng, kapa e khethehileng (joalo ka libaka tse nang le asiti le alkaline), joalo ka lisebelisoa tsa lifofane le lipompo tsa lik'hemik'hale le li-valve, li ka nkela oli ea liminerale tsa setso sebaka le ho ntlafatsa ts'epo ea lisebelisoa.
5. Tsamaiso ea Lijo: Litlatsetso tsa Maemo a Lijo
PPG ea sehlopha sa lijo (e lumellanang le FDA) e sebelisoa haholo-holo bakeng sa ho kopanya, ho hloekisa le ho nolofatsa lijo ts'ebetsong ea lijo:
Ho kopanya le ho tsitsisa: Lihlahisoa tsa lebese (tse kang ice cream le tranelate) le linthong tse besitsoeng (tse kang likuku le bohobe), PPG e sebetsa e le emulsifier ho thibela karohano ea oli le ho ntlafatsa ho tšoana ha sebopeho sa sehlahisoa le tatso. Linong, e tsitsisa litatso le mebala ho thibela karohano.
Defoamer: Mekhoeng ea ho belisa lijo (joalo ka ho etsa biri le soya sauce) le ts'ebetsong ea lero, PPG e sebetsa e le defoamer ho thibela ho foamela le ho ntlafatsa katleho ea tlhahiso ntle le ho ama tatso.
Setlolo se ntshang mongobo: Li-pastry le lipompong, PPG e sebetsa e le setlolo se nolofatsang mongobo ho thibela ho oma le ho petsoha, e leng se eketsang nako ea ho boloka.
6. Libaka tse ling: Phetoho ea Ts'ebetso le Litšebeliso tse Thusang
Likobo le Enke: Ntle le likobo tsa polyurethane, PPG e ka sebelisoa e le sesebelisoa sa ho fetola li-resin tsa alkyd le epoxy, ho ntlafatsa ho tenyetseha ha tsona, ho leka-lekana le ho hanyetsa metsi. Li-enkeng, e ka fetola viscosity le ho ntlafatsa ho hatisoa (mohlala, enke ea offset le gravure).
Lisebelisoa tsa Lesela: E sebelisoa e le qetello e thibelang ho sisinyeha le ho nolofatsa masela, e fokotsa ho bokellana ha 'mele le ho ntlafatsa bonolo. Ha e daea le ho qeta, e ka sebelisoa e le sesebelisoa sa ho leka-lekanya ho ntlafatsa ho hasana ha 'mala le ho ntlafatsa ho tšoana ha 'mala.
Di-Defoamer le Di-Demulsifier: Tlhahisong ya dikhemikhale (mohlala, ho etsa pampiri le kalafo ya metsi a ditshila), PPG e ka sebediswa e le sethibela-mafu ho thibela ho foamela nakong ya tlhahiso. Tlhahisong ya oli, e ka sebediswa e le sethibela-mafu ho thusa ho arola oli e tala ho metsi, ka hona ho eketsa pholiso ya oli. Dintlha tsa Bohlokwa tsa Tshebediso: Tshebediso ya PPG e hloka ho nahanelwa ka hloko boima ba dimolek'hule (mohlala, boima bo tlase ba dimolek'hule bo shebane le di-solvent le mongobo, ha boima bo mahareng le bo hodimo ba dimolek'hule bo shebane le emulsification le lubrication) le boemo ba bohloeki (dihlahiswa tse nang le bohloeki bo hodimo di kgethwa diindastering tsa dijo le meriana, ha maemo a tlwaelehileng a ka kgethwa ho latela ditlhoko tsa diindasteri). Ditshebediso tse ding di boetse di hloka phetoho (mohlala, ho kopanya kapa ho kopanya) ho ntlafatsa tshebetso (mohlala, ho eketsa ho hanyetsa mocheso le ho kgaotsa ha malakabe). Ka ditlhoko tse ntseng di eketseha tsa tshireletso ya tikoloho le tshebetso e hodimo, dibaka tsa tshebediso tsa PPG e fetotsweng (mohlala, PPG e thehilweng ho bio le PPG e ka bolang) di ntse di a hola.
Nako ea poso: Mphalane-29-2025