PLA ni iki?
Acide Polylactique, izwi kandi nka PLA (Acide Polylactique), ni monomer ya termoplastique ikomoka ku masoko y’ibinyabuzima ashobora kuvugururwa nka krahisi y'ibigori cyangwa ibisheke cyangwa ifu ya beterave.
Nubwo ari kimwe na plastiki zabanjirije iyi, imitungo yayo yabaye umutungo ushobora kuvugururwa, bituma iba iyindi nzira isanzwe y’ibicanwa.
PLA iracyafite aho ibogamiye ya karubone, iribwa, kandi ishobora kwangirika, bivuze ko ishobora kubora rwose mubidukikije aho kumeneka mikorobe yangiza.
Bitewe nubushobozi bwayo bwo kubora, isanzwe ikoreshwa nkibikoresho byo gupakira imifuka ya pulasitiki ibora, ibyatsi, ibikombe, amasahani, nibikoresho byo kumeza.
Uburyo bwo gutesha agaciro PLA
PLA ihura n’ibinyabuzima binyujijwe mu buryo butatu:
Hydrolysis: Amatsinda ya ester mumurongo wingenzi aravunika, bigatuma kugabanuka kwibiro bya molekile.
Kubora k'ubushyuhe: ibintu bigoye bivamo gushiraho ibice bitandukanye, nka molekile zoroheje, umurongo wa oligomeri n'umurongo wa sikeli ufite uburemere butandukanye bwa molekile, na lactide.
Photodegradation: Imirasire ya Ultraviolet irashobora gutera kwangirika. Nicyo kintu nyamukuru kigaragaza aside polylactique kumurasire yizuba muri plastiki, ibikoresho bipakira, hamwe na firime.
Hydrolysis reaction ni:
-COO- + H 2 O → -COOH + -OH
Igipimo cyo kwangirika kiratinda cyane kubushyuhe bwibidukikije. Ubushakashatsi bwakozwe mu 2017 bwerekanye ko PLA itigeze igira igihombo cyiza mu gihe cy’umwaka umwe mu mazi yo mu nyanja kuri 25 ° C (77 ° F), ariko ubushakashatsi ntabwo bwapimye kubora cyangwa kwinjiza amazi y’iminyururu ya polymer.
Ni ubuhe buryo bukoreshwa muri PLA?
1. Ibicuruzwa byabaguzi
PLA ikoreshwa mubicuruzwa bitandukanye byabaguzi, nkibikoresho byo kumeza, imifuka yo kugura supermarket, ibikoresho byo mu gikoni, hamwe na mudasobwa zigendanwa hamwe nibikoresho byabigenewe.
2. Ubuhinzi
PLA ikoreshwa muburyo bwa fibre kumurongo umwe wo kuroba hamwe ninshundura kubimera no kurwanya nyakatsi. Ikoreshwa mumifuka yumucanga, inkono yindabyo, guhambira imishumi, nu mugozi.
3. Kuvura
PLA irashobora kwangirika muri acide ya lactique itagira ingaruka, bigatuma ikoreshwa nkibikoresho byubuvuzi muburyo bwa ankeri, imigozi, amasahani, pin, inkoni, ninshundura.
Ibintu bine bikunze kugaragara gusiba ibintu
1. Gusubiramo:
Irashobora kuba imiti ikoreshwa neza cyangwa gutunganya imashini. Mu Bubiligi, Galaxy yatangije uruganda rwa mbere rw’icyitegererezo mu gutunganya imiti ya PLA (Loopla). Bitandukanye no gutunganya imashini, imyanda irashobora kuba irimo imyanda itandukanye. Acide polylactique irashobora kugarurwa muburyo bwa chimique nka monomers binyuze mumashanyarazi ya hydrolysis cyangwa hydrolysis. Nyuma yo kwezwa, monomers irashobora gukoreshwa mugukora PLA mbisi idatakaje imitungo yumwimerere.
2. Ifumbire mvaruganda:
PLA irashobora kwangirika mubihe byifumbire mvaruganda, mbere ikoresheje hydrolysis ya chimique, hanyuma ikanywa na mikorobe, hanyuma ikangirika. Mugihe ifumbire mvaruganda (58 ° C (136 ° F)), PLA irashobora kubora igice (hafi kimwe cya kabiri) kubora mumazi na dioxyde de carbone mugihe cyiminsi 60, igice gisigaye kikangirika gahoro gahoro nyuma yacyo, bitewe na kristu yibikoresho. Mubidukikije bidafite ibihe nkenerwa, kubora bizatinda cyane, bisa na plastiki idafite ibinyabuzima, bitazabora burundu mumyaka magana cyangwa ibihumbi.
3. Gutwika:
PLA irashobora gutwikwa idatanga chlorine irimo imiti cyangwa ibyuma biremereye, kuko irimo gusa karubone, ogisijeni, na atome ya hydrogen. Gutwika PLA yakuweho bizatanga 19.5 MJ / kg (8368 btu / lb) yingufu zidasize ibisigisigi. Igisubizo, hamwe nibindi byagaragaye, byerekana ko gutwika ari uburyo bwangiza ibidukikije bwo kuvura aside polylactique.
4. Imyanda:
Nubwo PLA ishobora kwinjira mu myanda, ni amahitamo make yangiza ibidukikije kubera ko ibintu bigenda byangirika buhoro buhoro ku bushyuhe bw’ibidukikije, ubusanzwe buhoro buhoro nk’ibindi bikoresho bya plastiki bitangirika.
Igihe cyo kohereza: Ugushyingo-20-2024