Isugi ya PLA isigara, ikabikwa kandi ikumishwa kugeza kuri 400-ppm yubushyuhe mbere yo kuva muruganda.PLA ifata ubuhehere bwibidukikije byihuse, irashobora kwinjiza hafi 2000 ppm yubushyuhe bwicyumba kandi ibyinshi mubibazo byagaragaye kuri PLA bituruka kumisha idahagije.PLA isabwa gukama neza mbere yo kuyitunganya.Kuberako ari polymer ya kondegene, kuba hari nubushuhe buke cyane mugihe cyo gutunganya gushonga bitera kwangirika kwiminyururu ya polymer no gutakaza uburemere bwa molekile hamwe nubukanishi.PLA ikeneye impamyabumenyi zitandukanye zo gukama bitewe n amanota nuburyo izakoreshwa.Munsi ya 200 PPM nibyiza kuko viscosity izaba ihamye kandi ikemeza ubuziranenge bwibicuruzwa.
Kimwe na PET, isugi PLA itangwa mbere-kristu.Niba idashizwemo, PLA izahinduka kandi igahinduka igihe ubushyuhe bwayo bugera kuri 60 ℃.Ubu ni ubushyuhe bwa PLA bwibirahure (Tg);ingingo aho amorphous itangira koroshya..Niba PLA ikozwe neza yinjiye muburyo bwo kumisha kandi ihura nubushyuhe hejuru ya 140 F, bizateranya kandi bitume ibiza bikomera mubwato.Kubwibyo, kristu ikoreshwa kugirango yemere PLA kunyura muri Tg mugihe arimo gukangurwa.
Noneho PLA ikenera Kuma na kristu
1. Sisitemu yo kumisha bisanzwe --- yumisha (desiccant)
Amanota ya Amorphous akoreshwa mubushuhe bwa firime muri firime yumishwa kuri 60 ℃ mumasaha 4.Impamyabumenyi ya Crystallized ikoreshwa mugukuramo urupapuro na firime byumye kuri 80 ℃ kumasaha 4.Inzira hamwe nigihe kirekire cyo gutura cyangwa ubushyuhe burenze nka fibre izunguruka ikenera cyane, kugeza munsi ya 50 PPM yubushuhe.
Mubyongeyeho, Infrared kristal yumye --- IR Kuma yerekanwe kwerekana neza neza Ingeo biopolymer mugihe cyo kumisha.ukoresheje Infrared yumye (IR).Bitewe numuvuduko mwinshi wo guhererekanya ingufu hamwe nubushyuhe bwa IR hamwe nuburebure bwihariye bwakoreshejwe, ibiciro byingufu birashobora kugabanuka cyane, hamwe nubunini.Ikizamini cya mbere cyerekanye ko isugi Ingeo biopolymer ishobora gukama hanyuma flake ya amorphous ikabikwa hanyuma ikuma mugihe cyiminota 15 gusa
Infrared kristal yumye --- Igishushanyo cya ODE
1. Hamwe no gutunganya Kuma no korohereza icyarimwe
2. Igihe cyo kumisha ni 15-20mins (Igihe cyo kumisha nacyo kirashobora guhinduka nkuko abakiriya babisabwa kubikoresho byumye)
3. Ubushyuhe bwumye burashobora guhinduka (Urutonde kuva 0-500 ℃)
4. Ubushuhe bwa nyuma: 30-50ppm
5. Igiciro cyingufu uzigame hafi 45-50% ugereranije na Desiccant yumye & crystallizer
6.Kuzigama umwanya: kugeza 300%
7. Sisitemu yose igenzurwa na Siemens PLC, byoroshye gukora
8. Byihuse gutangira
9. Guhindura vuba-igihe no guhagarika
Ubusanzwe PLA (aside polylactique) ikoreshwa ni
Gukuramo fibre: imifuka yicyayi, imyenda.
Gutera inshinge: imanza za zahabu.
Ibicuruzwa: hamwe nimbaho, PMMA.
Thermoforming: clamshells, ibisuguti bya kuki, ibikombe, ikawa.
Gukubita ibicu: amacupa y'amazi (adafite karubone), imitobe mishya, amacupa yo kwisiga.
Igihe cyo kohereza: Gashyantare-24-2022