PLA ndi PBAT

Ngakhale kuti zonsezi ndi zinthu zowonongeka, magwero awo ndi osiyana. PLA imachokera ku zinthu zachilengedwe, pamene PKAT imachokera ku zipangizo za petrochemical.

PLA a monomer zakuthupi ndi lactic acid, amene nthawi zambiri pansi ndi mankhusu mbewu monga chimanga kuchotsa wowuma, ndiyeno n'kukhala unrefined shuga.

Glucose amafufuzidwa mofanana ndi mowa kapena mowa, ndipo pamapeto pake lactic acid monomer imayeretsedwa. Lactic acid imapangidwanso ndi lactide kukhala poly (lactic acid).

BAT polyterephthalic acid - butanediol adipate, ndi ya petrochemical biodegradable pulasitiki, kuchokera ku petrochemical industry, monomer wamkulu ndi terephthalic acid, butanediol, adipic acid.

Ngati PLA ndi kalonga wamng'ono komanso wamphamvu, ndiye kuti PBAT ndi yachifundo chachikazi chofiira. PLA ili ndi ma modulus apamwamba, mphamvu zolimba kwambiri komanso ductility osauka, pamene PKAT ili ndi kukula kwakukulu kwa fracture ndi ductility yabwino.

PLA ali ngati PP mu mapulasitiki ambiri, jekeseni akamaumba, extrusion, kuwomba akamaumba, chithuza akhoza kuchita chirichonse, PBAT ndi monga LDPE, filimu ma CD ma CD ndi bwino.

PLA ndi kuwala chikasu mandala olimba, zabwino matenthedwe bata, processing kutentha 170 ~ 230 ℃, ali zabwino zosungunulira kukana, akhoza kukonzedwa m'njira zosiyanasiyana, monga extrusion, kupota, biaxial kutambasula, jekeseni kuwomba akamaumba.

Zofanana ndi PP, kuwonekera ndikufanana ndi PS, PLA yoyera siyingagwiritsidwe ntchito pokonzekera mwachindunji zinthu, PLA ili ndi mphamvu yayikulu komanso yopondereza modulus, koma kulimba kwake kolimba komanso kosauka, kusowa kusinthasintha komanso kukhazikika, kosavuta kupindika, kukhudzika ndi kung'amba. kukaniza ndi osauka.

PLA nthawi zambiri imagwiritsidwa ntchito popanga zinthu zowonongeka pambuyo pa kusinthidwa, monga ziwiya zodyera zotayidwa ndi udzu.

PBAT ndi polima semi-crystalline, nthawi zambiri kutentha kwa crystallization kumakhala pafupifupi 110 ℃, ndipo malo osungunuka ndi pafupifupi 130 ℃, ndipo kachulukidwe kali pakati pa 1.18g/mL ndi 1.3g/mL. Kuwala kwa PBAT kuli pafupi ndi 30%, ndipo kuuma kwa Shore kuli pamwamba pa 85. Kukonzekera kwa PBAT kumakhala kofanana ndi LDPE, ndipo njira yofanana ingagwiritsidwe ntchito powombera filimu. Amakina amtundu wa PBA ndi PBT, ductility wabwino, kutalika panthawi yopuma, kukana kutentha ndi kukana kwamphamvu. Choncho, zinthu zowonongeka zidzasinthidwanso, makamaka kuti zikwaniritse zofunikira zamagulu, komanso kuchepetsa ndalama.

Ngakhale PLA ndi PBAT ali ndi machitidwe osiyanasiyana, amatha kuthandizana! PLA imawonjezera kuuma kwa filimu ya PBAT, PBAT ikhoza kusintha kusinthasintha kwa PLA, ndikukwaniritsa cholinga choteteza chilengedwe.

Pakadali pano, ntchito zambiri zozikidwa pa PBAT pamsika ndizinthu zamatumba a membrane. Zida zosinthidwa za PBAT zimagwiritsidwa ntchito kwambiri powombera filimu kupanga matumba, monga matumba ogula.

PLA zipangizo zimagwiritsa ntchito jekeseni akamaumba, ndi PLA kusinthidwa zipangizo zambiri ntchito ziwiya zotayidwa Catering, monga mabokosi degradable chakudya, udzu degradable, etc.

Kwa nthawi yayitali, mphamvu ya PLA ndi yocheperako pang'ono kuposa ya PBAT. Chifukwa chachikulu bottleneck wa luso kupanga PLA ndi kupanda yojambula mu patsogolo lactide, mphamvu ya PLA ku China sichinaonjezeke kwambiri, ndipo mtengo wa zipangizo PLA ndi okwera mtengo. Mabizinesi okwana 16 a PLA apangidwa, akumangidwa kapena akukonzekera kumangidwa kunyumba ndi kunja. Kuthekera kopanga kwayikidwa pakupanga matani 400,000/chaka, makamaka m'maiko akunja; Mphamvu yomanga matani 490,000 / chaka, makamaka kunyumba.

Mosiyana ndi izi, ku China, zida zopangira PBAT ndizosavuta kupeza, ndipo ukadaulo wopanga ndi wokhwima. Kuchuluka kwa PBAT ndi mphamvu zomwe zikumangidwa ndizokulirapo. Komabe, kusiyana kwa nthawi yotulutsa mphamvu ya PBAT ikhoza kukhala yayitali chifukwa cha kusinthasintha kwamitengo ya BDO yaiwisi, ndipo mtengo wamakono wa PBAT udakali wotsika mtengo kuposa PLA.

Monga momwe tawonetsera patebulo lotsatirali, PBAT yamakono yomwe ikumangidwa + yokonzedwayo ikuwerengedwa potengera mphamvu yopangira gawo loyamba, kuphatikizapo mphamvu yopangira yoyambirira, pakhoza kukhala matani 2.141 miliyoni a mphamvu zopangira mu 2021. Poganizira za gawo loyamba lenileni. kupanga sangathe bwinobwino anaika ntchito, mphamvu kupanga ndi za matani miliyoni 1.5.

The original mtengo wa PLA ndi apamwamba kuposa PBAT, koma chifukwa mankhwala thumba nembanemba poyamba anakhudzidwa ndi ndondomeko, chifukwa PBAT kusowa, pa nthawi yomweyo, mtengo wa PBAT monoma BDO ananyamuka kwambiri, panopa kukongola maukonde wofiira PBAT. yakhala yachangu kuti ipeze mtengo wa PLA.

Ngakhale PLA akadali kalonga kakang'ono chete, mtengo wake ndi wokhazikika, wopitilira 30,000 yuan/ton.

Zomwe zili pamwambazi ndikufanizira kwazinthu ziwirizi. Mukalankhulana ndi omwe ali mkati mwamakampani kuti ndi zinthu ziti zomwe zili zabwino mtsogolo, aliyense amakhala ndi malingaliro osiyanasiyana. Anthu ena amaganiza kuti PLA idzakhala yodziwika bwino m'tsogolomu.

Anthu ena amaganiza kuti PBAT idzakhala yaikulu, chifukwa poganizira kuti PLA imachokera ku chimanga, kodi vuto la chimanga likhoza kuthetsedwa? Ngakhale PBAT ndi petrochemical yochokera, ili ndi zabwino zina pamagwero azinthu zopangira komanso mtengo.

M'malo mwake, iwo ndi banja, palibe mikangano yayikulu, kugwiritsa ntchito kosinthika kokha, phunzirani kuchokera kwa wina ndi mnzake kuti muthe kusewera mphamvu yayikulu!