I-PLA kunye ne-PBAT

Nangona zombini zizixhobo ezinokubola, imithombo yazo yahlukile. I-PLA ivela kwizinto zebhayoloji, ngelixa i-PKAT ivela kwizinto zepetrochemical.

I-PLA's monomer material yi-lactic acid, edla ngokugutywa zizityalo zamakhoba ezifana nombona ukuze kukhutshwe istatshi, emva koko iguqulwe ibe yiglucose engacocwanga.

Emva koko i-glucose ivundiswe ngendlela efanayo kwibhiya okanye utywala, kwaye ekugqibeleni i-lactic acid monomer iyahlanjululwa. Iasidi yeLactic iphinda ifakwe kwilactide ibe yipoly (lactic acid).

I-BAT i-polyterephthalic acid - i-butanediol adipate, ye-petrochemical biodegradable plastic, ukusuka kwi-petrochemical industry, i-monomer ephambili i-terephthalic acid, i-butanediol, i-adipic acid.

Ukuba i-PLA yinkosana encinci kwaye eyomeleleyo, ngoko i-PBAT yinethiwekhi yabasetyhini ebomvu. I-PLA inemodyuli ephezulu, amandla okuqina aphezulu kunye ne-ductility engalunganga, ngelixa i-PKAT inezinga eliphezulu lokukhula kwe-fracture kunye ne-ductility efanelekileyo.

I-PLA ifana ne-PP kwiiplastiki eziqhelekileyo, i-injection molding, i-extrusion, i-blow molding, i-blister inokwenza yonke into, i-PBAT ifana ne-LDPE, ukupakishwa kwefilimu yefilimu kulungile.

I-PLA iluqilima olukhanyayo olutyheli olucacileyo, ukuzinza okuhle kwe-thermal, ubushushu bokulungisa i-170 ~ 230 ℃, inokumelana ne-solvent elungileyo, inokucutshungulwa ngeendlela ezahlukeneyo, ezinje nge-extrusion, ukujikeleza, ukolula kwe-biaxial, isitofu sokubumba isitofu.

Ngokufana ne-PP, ukucaca kufana ne-PS, i-PLA ecocekileyo ayinakusetyenziselwa ukulungiselela ngokuthe ngqo iimveliso, i-PLA inamandla aphezulu kunye nemodyuli yoxinzelelo, kodwa ukuqina kwayo okunzima kunye nokungahambi kakuhle, ukungabikho kokuguquguquka kunye nokuqina, kulula ukugoba i-deformation, impembelelo kunye nokukrazula. Ukuxhathisa kubi.

I-PLA idla ngokusetyenziselwa ukwenza iimveliso ezinokonakala emva kokuguqulwa, ezifana nezixhobo zokutya ezilahlwayo kunye neendiza.

I-PBAT yi-semi-crystalline polymer, ngokuqhelekileyo ubushushu becrystallization bujikeleze i-110℃, kwaye indawo yokunyibilika imalunga ne-130℃, kwaye ubuninzi buphakathi kwe-1.18g/mL kunye ne-1.3g/mL. I-crystallinity ye-PBAT i malunga ne-30%, kwaye ukuqina kwe-Shore kungaphezulu kwe-85. Ukusebenza kokucubungula kwe-PBAT kufana ne-LDPE, kwaye inkqubo efanayo ingasetyenziselwa ukuvuthela ifilimu. Iimpawu ze-Mechanical zazo zombini iimpawu ze-PBA kunye ne-PBT, i-ductility efanelekileyo, i-elongation ngexesha lekhefu, ukumelana nobushushu kunye nokuchasana kwempembelelo. Ngoko ke, iimveliso zokunciphisa ziya kuguqulwa, ngokukodwa ukwenzela ukuhlangabezana neemfuno zokusebenza kweemveliso, kodwa nokunciphisa iindleko.

Nangona i-PLA kunye ne-PBAT zinentsebenzo eyahlukileyo, zinokuncedisana! I-PLA yongezelela ukuqina kwefilimu ye-PBAT, i-PBAT inokuphucula ukuguquguquka kwe-PLA, kwaye idibanise ngokudibeneyo imbangela yokukhusela indalo.

Okwangoku, uninzi lwezicelo ezisekwe kwimathiriyeli ye-PBAT kwintengiso ziimveliso zebhegi zemembrane. Izixhobo ezilungisiweyo ze-PBAT zisetyenziswa ikakhulu ukuvuthela ifilim ukwenza iibhegi, ezinjengeengxowa zokuthenga.

Izinto ze-PLA zisetyenziselwa ukubumba inaliti, kwaye izinto eziguquliweyo ze-PLA zisetyenziswa kakhulu kwizixhobo zokutya ezilahlwayo, ezifana neebhokisi zokutya ezonakeleyo, iindiza ezonakeleyo, njl.

Ixesha elide, umthamo we-PLA ungaphantsi kancinane kune-PBAT. Ngenxa ye-bottleneck enkulu yeteknoloji yokuvelisa i-PLA kunye nokungabikho kokuphumelela kwinkqubela phambili ye-lactide, amandla e-PLA e-China awanyukanga kakhulu, kwaye ixabiso lezinto eziluhlaza ze-PLA libiza kakhulu. Amashishini ePLA ali-16 ewonke afakwe kwimveliso, asakhiwa okanye acetywa ukwakhiwa ekhaya nakumazwe angaphandle. Umthamo wemveliso ubekwe kwimveliso yeetoni ezingama-400,000 / ngonyaka, ngakumbi kumazwe angaphandle; Umthamo wokwakha we-490,000 yeetoni/ngonyaka, ingakumbi ekhaya.

Ngokwahlukileyo koko, e-China, izinto ezikrwada zemveliso ye-PBAT kulula ukuzifumana, kwaye iteknoloji yokuvelisa ikhulile. Umthamo we-PBAT kunye nomthamo ophantsi kolwakhiwo mkhulu kakhulu. Nangona kunjalo, umahluko wexesha lokukhutshwa kwamandla e-PBAT linokwandiswa ngenxa yokuguquguquka kwexabiso le-BDO yezinto ekrwada, kwaye ixabiso langoku le-PBAT lisesezantsi kune-PLA.

Njengoko kubonisiwe kule theyibhile ilandelayo, i-PBAT yangoku ephantsi kolwakhiwo + ulwakhiwo olucwangcisiweyo lubalwa ngokusekelwe kumthamo wemveliso yesigaba sokuqala, kunye nomthamo wokuqala wemveliso, kunokubakho i-2.141 yezigidi zeetoni zomthamo wemveliso ngo-2021. Ukuqwalasela inqanaba lokuqala lokwenene imveliso ayikwazi ukufakwa ngempumelelo ekusebenzeni, umthamo wemveliso umalunga ne-1.5 yezigidi zeetoni.

Ixabiso yoqobo PLA iphezulu PBAT, kodwa ngenxa yokuba iimveliso inwebu bag kuqala bachatshazelwa ngumgaqo-nkqubo, nto leyo ebangela ukuba PBAT ukungabikho, kwangaxeshanye, ixabiso PBAT monoma BDO wavuka kabukhali, inethiwekhi ubuhle yangoku ebomvu PBAT. uye wakhawuleza ukubamba ixabiso le-PLA.

Ngelixa i-PLA iseyinkosana encinci ezolileyo, ixabiso lizinzile, ngaphezu kwe-30,000 ye-yuan/toni.

Oku ngasentla kuthelekiso oluqhelekileyo lwezixhobo ezimbini. Xa unxibelelana nabangaphakathi kwishishini malunga nokuba loluphi uhlobo lwezinto ezithandekayo kwixesha elizayo, wonke umntu unezimvo ezahlukeneyo. Abanye abantu bacinga ukuba i-PLA iya kuba yeyona nto iphambili kwixesha elizayo.

Abanye abantu bacinga ukuba i-PBAT iya kuba yinto eqhelekileyo, kuba ngokuqwalasela ukuba i-PLA ubukhulu becala ivela kwingqolowa, ngaba ingxaki yokubonelelwa ngombona ingasonjululwa? Nangona i-PBAT isekelwe kwi-petrochemical, ineenzuzo ezithile kumthombo wezinto ezikrwada kunye nexabiso.

Enyanisweni, bayintsapho, akukho ngxabano eqhelekileyo, isicelo esiguquguqukayo kuphela, bafunde omnye komnye ukuze badlale amandla amakhulu!