PBAT (polybutylene terephthalate) yog lub npe luv rau polybutylene terephthalate. Cov khoom siv raw rau kev npaj ntawm PBAT feem ntau yog adipic acid (AA), terephthalic acid (PTA), butylene glycol (BDO) raws li monomers, raws li ib feem ntawm esterification los yog transesterification cov tshuaj tiv thaiv thiab polycondensation cov tshuaj tiv thaiv rau synthesize polyadipic acid / butylene terephthalate. ester, thiab tom qab ntawd los ntawm esterification, polycondensation thiab granulation peb kauj ruam los npaj cov khoom kawg. PBAT muaj benzene rings, yog li nws muaj siab molecular thermal stability, tab sis tsawg molecular degradation tus nqi; molecules nyob ib qhov chaw loj thiab muaj kev sib xyaw nrog lwm cov molecules; Nws muaj roj chains, uas guarantees zoo saj zawg zog ntawm molecular chains thiab yog li zoo ductility.
PBAT yog ib tug semi-crystalline polymer, feem ntau lub crystallization kub yog nyob ib ncig ntawm 110 ° C, thiab lub melting point yog hais txog 130 ° C, thiab qhov ceev yog nruab nrab ntawm 1.18g / ml ~ 1.3g / ml. Lub crystallinity ntawm PBAT yog hais txog 30%, thiab Shore hardness yog siab tshaj 85. PBAT yog ib tug copolymer ntawm aliphatic thiab aromatic pawg, uas combines cov zoo heev degradation zog ntawm aliphatic polyesters thiab cov zoo mechanical zog ntawm aromatic polyesters. Kev ua tau zoo ntawm PBAT zoo ib yam li LDPE, thiab cov yeeb yaj kiab tuaj yeem raug tshuab nrog LDPE cov cuab yeej ua haujlwm.
PBAT muaj biodegradability zoo, thiab cov khoom tsim nrog PBAT yog yooj yim thiab degraded tag nrog kev pab los ntawm tej yam ntuj tso microorganisms thiab kab mob, nws thiaj li hloov mus rau carbon dioxide thiab dej. Vim nws cov ductility zoo, elongation ntawm kev tawg, kub tsis kam thiab cuam tshuam cov khoom, PBAT tuaj yeem siv rau hauv kev lag luam ntim yas, xws li cov hnab ntim khoom, hnab khib nyiab, thiab lwm yam, thiab tseem siv rau hauv tableware, mulch film thiab lwm yam teb.
Post lub sij hawm: Jan-19-2023