Acide yubushyuhe bukabije bwa polystrackic (PLA) nimwe mubintu bya plastiki byangirika cyane byangirika kubushakashatsi no kubishyira mu bikorwa.Ibikoresho byayo bibisi biva mumibabi ishobora kuvugururwa, ibigori, ubuhinzi -ibicuruzwa, nibindi, bifite ibinyabuzima byiza.PLA ifite imashini nziza kandi isa na plastiki ya polypropilene.Irashobora gusimbuza PP na PET plastike mubice bimwe.Muri icyo gihe, ifite urumuri rwiza, gukorera mu mucyo, kumva, na bagiteri zimwe na zimwe.
1. Imiterere yumusaruro wo hejuru -ubushyuhe bwa polystraphine PLA
Kugeza ubu, hari ubwoko bubiri bwinzira ya PLA.Bumwe nuburyo butaziguye bwo guteranya.Acide lactique igiye kumazi no kugabanuka kubushyuhe bwinshi n'umuvuduko muke.Igikorwa cyo kubyaza umusaruro kiroroshye kandi ikiguzi ni gito, ariko ibicuruzwa bya molekuline ubuziranenge ntibingana kandi ingaruka zifatika ni mbi.Ikindi nuko polymerisiyonike ya Cyrne yemewe, nuburyo bukoreshwa muburyo bukuru bwo gukora.Inzira yihariye niyi ikurikira.
PLA iremewe, ifite umusaruro mwinshi, ibicuruzwa byiza, nigiciro kinini.
2. De degradabilité ya polistraphine ya PLA yo hejuru
PLA irahagaze neza mubushyuhe bwicyumba, ariko biroroshye kwangiza vuba CO2 namazi mubushuhe buke buke, acide kubikombe bya minisiteri, hamwe na mikorobe.Kubwibyo, ibicuruzwa bya PLA birashobora gukoreshwa mugukoresha ibidukikije nuwuzuza kugirango bikoreshwe neza mugihe cyemewe, kandi birashobora guteshwa agaciro mugihe nyuma yo gutererana.
Ibintu bigira ingaruka mbi ku iyangirika rya PLA harimo ubwiza bwa molekile, imiterere ya kristaline, imiterere ya mikoro, ubushyuhe bw’ibidukikije n’ubushuhe, agaciro ka pH, igihe cyumucyo na mikorobe y’ibidukikije.
PLA nibindi bikoresho bivanze nibindi bikoresho bishobora kugira ingaruka kumuvuduko.Kurugero, PLA yongeramo umubare munini wifu yimbaho cyangwa ibyatsi byibigori na fibre kugirango byihute cyane igipimo cyo kwangirika.
3. kurwanya ubushyuhe bwo hejuru polystrackic aside PLA
Inzitizi bivuga ubushobozi bwo gukumira gaze n'amazi binyuze mu bikoresho.Igabana ryibikoresho byo guhagarika ni ngombwa cyane kubikoresho byo gupakira.Kugeza ubu, igikapu cya plastike gikunze kugaragara ku isoko ni ibikoresho bya Plapbat.Kurwanya firime ya PLA birashobora kwagura ikibanza cyo gusaba.
Ibintu bigira ingaruka ku guhagarika PLA harimo ahanini ibintu byabo (imiterere ya molekile na leta ya kristaline) nibintu byo hanze (ubushyuhe, ubushuhe, imbaraga zo hanze).
1. Gushyushya firime ya PLA bizagabanya guhagarikwa kwayo, bityo PLA ntabwo ikwiriye gupakira ibiryo nkibiryo bigomba gushyuha.
2 PLA irambuye murwego runaka irashobora kongera imbaraga.Iyo igipimo cya tensile cyiyongereye kiva kuri 1 kigera kuri 6.5, kristu ya PLA iratera imbere cyane, bityo inzitizi zikaba nziza.
3. Ongeraho bimwe byo guhagarika (nkibumba na fibre) muri substrate ya PLA birashobora kunoza inzitizi za PLA.Ni ukubera ko guhagarika inzira igoramye y'amazi cyangwa gaze yinjira muri molekile nto.
4. Kuvura ubudodo hejuru ya firime ya PLA birashobora kunoza guhangana.
4. Imikorere ya PLA
PLA ifite imbaraga nziza.Ibikoresho bya mashini bisa na PP, ariko kubura ubukana biroroshye kunama no guhindura, kandi mubisanzwe bigomba gukomera no guhindurwa.Kugirango hamenyekane ibinyabuzima bya PLA, PLA nibindi bikorwa bya plastiki mubisanzwe bivangwa na resin biodegradable.PBAT, PBS, PCL, reberi karemano nibindi bintu birashobora kunoza ubukana bwa PLA.
5. Imikorere ya PLA
PLA ifite umucyo udasanzwe hamwe nuburabyo bwibindi bikoresho bya pulasitiki byangirika, bihwanye nimpapuro zikirahure na PET, cyane cyane bikwiriye gukoreshwa (gupakira amashusho, ingaruka nziza zo gushushanya. Mubisanzwe, gukorera mu mucyo n’umucyo bya PLA ntibikeneye kunozwa. Bikwiye menya ko ibindi mubindi biri mubindi.Ntugabanye gukorera mu mucyo uko bishoboka kwose kugirango urebe neza ibyo bipfunyika biboneka no gushushanya.
Agasanduku ko gupakira mu mucyo
6. Imikorere yubushyuhe bwa PLA
Ubushyuhe bwumuriro bwibikoresho bya PLA bihwanye na PVC, ariko munsi ya PP, PE na PS.Ubushyuhe bwo gutunganya bugenzurwa hagati ya 170 ~ 230 ° C. Birakwiriye gutera inshinge, kurambura, gusohora, guhuha, gukubita 3D, nibindi.
Ibikoresho bya PLA
Mubikorwa nyabyo, igipimo cya kristu ya PLA kiratinda kandi mubisanzwe bisaba guhinduka.Bitewe nigipimo gito kandi gito cyo korohereza ibintu, ubushyuhe bwo guhindura ubushyuhe bwa PLA buri hasi, bugabanya imikoreshereze yabyo mugupakira ibicuruzwa byuzuye ubushyuhe cyangwa ibicuruzwa biva mu kirere.
Kugirango tunoze igipimo cya kristu ya PIA hamwe na kristu, ubuziranenge bwa PLA burashobora kunozwa bishoboka mugihe cyo gukora.Kuvura Antuction nuburyo bwo kunoza PA kristu.Byongeye kandi, irashobora kongerwamo ibikoresho bya kirimbuzi kugirango itezimbere imyitwarire ya kristu, itezimbere ububobere bwayo, bityo izamura ubushyuhe bwimiterere yubushyuhe, kandi izamura ubushyuhe bwayo.
Ubushyuhe bwo hejuru 3D icapa PLA
7. Imikorere ya antibacterial ya PLA
PLA irashobora gukora ibidukikije bidafite aside irike hejuru yibicuruzwa, bifite ingaruka za bacteriostatike na mildew.Niba imiti ifasha antibacterial ikoreshwa kugirango igere hejuru ya 90% yikigereranyo cya antibacterial, irashobora gukoreshwa mugupakira antibacterial ibicuruzwa.
PLA yumutima nimiyoboro yimitsi, antibacterial PLA ikoreshwa mubuvuzi
Imiti ikoreshwa cyane ya antibacterial antibacterial ni ifeza, umuringa, zinc nibindi byuma.Indwara ya bagiteri ikoreshwa cyane ya Hango irimo ibinyabuzima bya vanadal cyangwa Ethyl vanadal.Umutekano wibiryo byizindi miti igabanya ubukana ugomba kwigwa.Mubisanzwe kama antibacterial agent irakennye kandi igihe cyemewe ni gito.
8. Imikorere y'amashanyarazi ya PLA
PLA irashobora gutegura ibice bitwara ibintu nka karubone yumukara (CB), carbone nanotube (CNTS), fibre karubone (CFS), cyangwa ringne yamabuye.Ibikoresho byifashishwa bya polymer bikoreshwa cyane muri plastiki irwanya anti-static, ibikoresho byo gukingira amashanyarazi, ibikoresho-byo kugenzura ubushyuhe -ibikoresho byubushyuhe, ibikoresho byiza byubushyuhe, nibikoresho byangiza ibidukikije.
CPCS, ishingiye kuri PLA, nayo ifite iyangirika na biocompatibilité.Irashobora gukoreshwa muburyo budasanzwe bwo kurwanya anti-static, gupakira amashanyarazi ya electromagnetic, hamwe nububiko bwubwenge.Kurugero, polymer shingiro ya PLA irashobora gukoreshwa kuri gaze cyangwa ibyuma byamazi kugirango umenye amakuru meza yibiribwa.
Igihe cyo kohereza: Ukwakira-08-2022