I-Polylactic acid (PLA) iwuhlobo olusha lwe-bio-based and renewable biodegradable material, olwenziwa ngezinto ezingavuthiwe zesitashi ezihlongozwe izinsiza zezitshalo ezivuselelekayo (njengommbila, umdumbula, njll.). Isitashi impahla eluhlaza is saccharified ukuze kutholwe glucose, bese imvubelo glucose kanye amagciwane athile ukukhiqiza high-purity lactic acid, bese indlela chemical synthesis isetshenziswa synthesis polylactic acid nge isisindo samangqamuzana ethile. Ine-biodegradability enhle, futhi ingacekelwa phansi ngokuphelele ama-microorganisms emvelweni ngaphansi kwezimo ezithile ngemva kokusetshenziswa, ekugcineni ikhiqize i-carbon dioxide namanzi, ngaphandle kokungcolisa imvelo, okuzuzisa kakhulu ukuvikela imvelo futhi kuqashelwa njengento ehambisana nemvelo.
I-Polylactic acid inokuqina okuhle kwe-thermal, izinga lokushisa lokucubungula lingu-170 ~ 230 ℃, futhi inokumelana okuhle kwe-solvent. Ingacutshungulwa ngezindlela ezahlukahlukene, njenge-extrusion, ukuphotha, ukunwebeka kwe-biaxial, kanye nokubumba kokushaywa komjovo. Ngaphandle kokuthi i-biodegradable, imikhiqizo eyenziwe nge-polylactic acid ine-biocompatibility enhle, isicwebezelisi, obala, ukuzwa kwesandla nokumelana nokushisa, kanye nokumelana nama-bacterium athile, ukuvinjelwa komlilo kanye nokumelana ne-UV, ngakho-ke ziwusizo kakhulu. Isetshenziswa kakhulu njengezinto zokupakisha, amafayibha kanye nama-nonwovens, njll., okwamanje asetshenziswa kakhulu ezingutsheni (zangaphansi, izingubo zangaphandle), imboni (ezokwakha, ezolimo, ezamahlathi, ukwenza amaphepha) kanye nezinkambu zezokwelapha nezempilo.
Isikhathi sokuthumela: Sep-19-2022