High-temperature polystrackic acid (PLA) ke e 'ngoe ea lipolasetiki tse senyehang haholo tse senyehang habonolo bakeng sa lipatlisiso le lits'ebetso.Lisebelisoa tsa eona tse tala li tsoa ho likhoele tse nchafalitsoeng tsa semela, poone, lihlahisoa tsa temo, joalo-joalo, tse nang le biodegradability e ntle.PLA e na le thepa e ntle ea mochini mme e tšoana le polasetiki ea polypropylene.E ka nkela polasetiki ea PP le PET libakeng tse ling.Ka nako e ts'oanang, e na le gloss e ntle, pepeneneng, maikutlo, le bacteriostatic e itseng.
1. Boemo ba tlhahiso ea polystraphin PLA e phahameng ea mocheso
Hona joale, ho na le mefuta e 'meli ea litsela tsa ho kopanya tsa PLA.E 'ngoe ke mokhoa o tobileng oa ho kopanya.Asiti ea lactic e haufi le ho ntša metsi le ho honyela ka mocheso o phahameng le khatello e tlase.Ts'ebetso ea tlhahiso e bonolo 'me litšenyehelo li tlaase, empa boleng ba limolek'hule tsa sehlahisoa ha bo lekane mme phello ea sebele ea kopo e futsanehile.E 'ngoe ke hore propylecly polymerization ea Cyrne e molaong, e leng mokhoa o tloaelehileng oa tlhahiso ea hona joale.Mokhoa o tobileng o tjena.
PLA e molaong, e na le ts'ebetso e phahameng ea tlhahiso, boleng bo botle ba sehlahisoa le theko e phahameng.
2. Degradability ea polystraphin PLA e phahameng ea mocheso
PLA e tsitsitse haholoanyane mochesong oa kamore, empa ho bonolo ho senya CO2 ka potlako le metsi sebakeng sa mocheso o phahameng hanyane, acid ho senoelo sa lesale la tšebeletso, le tikoloho ea likokoana-hloko.Ka hona, lihlahisoa tsa PLA li ka sebelisoa ho sebelisa tikoloho le li-filler hore li sebelisoe ka mokhoa o sireletsehileng nakong ea ho nepahala, 'me li ka senyeha ka nako e itseng ka mor'a ho lahloa.
Lintho tse amang ho senyeha ha PLA li kenyelletsa boleng ba limolek'hule, boemo ba kristale, sebopeho se senyenyane, mocheso oa tikoloho le mongobo, boleng ba pH, nako ea leseli le microorganism ea tikoloho.
PLA le lisebelisoa tse ling li kopantsoe le lisebelisoa tse ling tse ka amang lebelo la ho senyeha.Mohlala, PLA e eketsa palo e itseng ea phofo ea lepolanka kapa joang ba poone le fiber ho potlakisa sekhahla sa ho senyeha.
3. ho hanyetsa mocheso o phahameng oa polystrackic acid PLA
Thibelo e bolela bokhoni ba ho thibela mouoane oa khase le metsi ka thepa.Karohano ea thepa e thibelang e bohlokoa haholo bakeng sa lisebelisoa tsa ho paka.Hajoale, mokotla oa polasetiki o atileng haholo 'marakeng ke lisebelisoa tse kopaneng tsa Plapbat.Ho hanyetsa filimi ea PLA ho ka atolosa tšimo ea kopo.
Lintho tse amang ho thibela PLA haholo-holo li kenyelletsa lintlha tsa bona (sebopeho sa limolek'hule le boemo ba kristale) le lintho tse ka ntle (mocheso, mongobo, matla a ka ntle).
1. Ho futhumatsa filimi ea PLA ho tla fokotsa ho thibela ha eona, kahoo PLA ha e tšoanelehe bakeng sa ho paka lijo e le lijo tse hlokang ho futhumala.
2 PLA e otlolohileng ka har'a mefuta e itseng e ka eketsa khanyetso.Ha tekanyo ea tensile e eketseha ho tloha ho 1 ho ea ho 6.5, crystallization ea PLA e ntlafatsoa haholo, kahoo tšitiso e ntlafatsoa.
3. Ho eketsa ho thibela (tse kang letsopa le fiber) ho substrate ea PLA ho ka ntlafatsa ho thibela PLA.Sena ke hobane ho thibela tsela e kobehang ea ho kenella ha metsi kapa khase ea limolek'hule tse nyane.
4. Pailoring kalafo holim'a filimi ea PLA e ka ntlafatsa ho hanyetsa.
4. Ts'ebetso ea mochini oa PLA
PLA e na le matla a matle.Thepa ea mochini e tšoana le PP, empa ho haella ha boima ho bonolo ho kobeha le ho holofala, 'me hangata e hloka ho thatafatsoa le ho fetoloa.Bakeng sa ho etsa bonnete ba hore PLA, PLA le ts'ebetso e 'ngoe ea polasetiki hangata li tsoakoa le resin e ka senyehang.PBAT, PBS, PCL, rabara ea tlhaho le lintho tse ling li ka ntlafatsa ho tiea ha PLA.
5. Ts'ebetso ea optical ea PLA
PLA e na le ponahalo e sa tloaelehang le khanya ea polasetiki e 'ngoe e senyehang, e lekanang le pampiri ea khalase le PET, haholo-holo e loketseng ho sebelisoa (sephutheloana sa pono, phello e ntle ea mokhabiso. Ka kakaretso, ponaletso le bobebe ba PLA ha li hloke ho ntlafatsoa. Se ke oa fokotsa ponahalo ea eona e ntle ka hohle kamoo ho ka khonehang ho netefatsa ponahalo ea eona le phello ea mokhabiso.
Lebokose la ho paka la PLA le pepeneneng
6. Ts'ebetso ea mocheso ea PLA
Botsitso ba mocheso oa thepa ea PLA bo lekana le PVC, empa bo tlase ho feta PP, PE le PS.Mocheso oa ho sebetsa ka kakaretso o laoloa pakeng tsa 170 ~ 230 ° C. E loketse ente, ho otlolla, extrusion, ho foka, ho otla ha 3D, joalo-joalo Essence.
Lisebelisoa tsa PLA
Ts'ebetsong ea 'nete, sekhahla sa crystallization ea PLA se lieha 'me ka kakaretso se hloka phetoho.Ka lebaka la lebelo le liehang le le tlaase la crystallization, mocheso oa mocheso oa mocheso oa PLA o tlaase, o fokotsang tšebeliso ea oona ka ho paka lihlahisoa tse tletseng mocheso kapa mocheso oa sterilization.
E le ho ntlafatsa sekhahla sa kristale ea PIA le crystallinity, PLA ea optical purity e ka ntlafatsoa ka hohle kamoo ho ka khonehang nakong ea tlhahiso.Kalafo ea Antuction hape ke mokhoa oa ho ntlafatsa PA crystallinity.Ntle le moo, e ka eketsoa le lisebelisoa tsa nyutlelie ho ntlafatsa boitšoaro ba kristale, ho ntlafatsa khanya ea eona, ka hona ho ntlafatsa mocheso oa mocheso oa mocheso, le ho ntlafatsa ho hanyetsa mocheso.
Mocheso o phahameng oa khatiso oa 3D PLA
7. Ts'ebetso ea antibacterial ea PLA
PLA e ka theha tikoloho e fokolang ea acidic holim'a sehlahisoa, se nang le liphello tsa bacteriostatic le hlobo.Haeba sehlahisoa se thusang sa antibacteria se sebelisoa ho fihla ho feta 90% ea sekhahla sa antibacteria, se ka sebelisoa bakeng sa ho paka sehlahisoa sa antibacterial.
PLA cardiovascular stent, antibacterial PLA e atisa ho sebelisoa lefapheng la bongaka
Hangata li-antibacterial agents tse sebelisoang ka tlhaho ke silevera, koporo, zinki le litšepe tse ling.Libaktheria tsa Hango tse sebelisoang hangata li kenyelletsa metsoako ea vanadal kapa ethyl vanadal formation.Tšireletseho ea lijo tsa li-antibacterial tse ling li hloka ho ithutoa.Ka kakaretso organic The antibacterial agent e futsanehile 'me nako ea ho sebetsa e khutšoanyane.
8. Ts'ebetso ea motlakase ea PLA
PLA e ka lokisa likaroloana tsa conductive tse kang carbon black (CB), carbon nanotubes (CNTS), carbon fiber (CFS), kapa ringne ea majoe.Lisebelisoa tse kopaneng tsa polymer li sebelisoa haholo ka polasetiking ea anti-static, lisebelisoa tse sireletsang motlakase oa motlakase, mocheso oa boithaopo - lisebelisoa tsa mocheso, lisebelisoa tse lekaneng tsa mocheso, le lisebelisoa tse hlokomelang tikoloho.
CPCS, e thehiloeng ho PLA, e boetse e na le ho senyeha le ho lumellana ha lintho.E ka sebelisoa bakeng sa liphutheloana tse khethehileng tsa anti-static, liphutheloana tsa tšireletso ea motlakase, le liphutheloana tse bohlale.Mohlala, PLA base conductive polymer e ka sebelisoa bakeng sa lisensara tsa khase kapa tsa metsi ho bona tlhaiso-leseling ea boleng ba lijo.
Nako ea poso: Oct-08-2022