PBAT (polybutylene terephthalate) ndi chidule cha polybutylene terephthalate. The zipangizo yokonza PBAT makamaka adipic asidi (AA), terephthalic acid (PTA), butylene glycol (BDO) monga monomers, malinga ndi gawo lina la esterification kapena transesterification anachita ndi polycondensation anachita synthesize polyadipic asidi/butylene terephthalate. ester, kenako kudzera esterification, polycondensation ndi granulation masitepe atatu kukonzekera chomaliza. PBAT imakhala ndi mphete za benzene, motero imakhala ndi kukhazikika kwamafuta ambiri, koma kutsika kwamphamvu kwa maselo; mamolekyu amatenga malo aakulu ndipo amathandiza kusakanikirana ndi mamolekyu ena; Lili ndi maunyolo amafuta, omwe amatsimikizira kusinthasintha kwabwino kwa maunyolo a molekyulu ndipo motero ductility yabwino.
PBAT ndi polima ya theka-crystalline, nthawi zambiri kutentha kwa crystallization kumakhala pafupifupi 110 ° C, ndipo malo osungunuka ndi pafupifupi 130 ° C, ndipo kachulukidwe kali pakati pa 1.18g/ml ~ 1.3g/ml. Kuwala kwa PBAT kuli pafupi ndi 30%, ndipo kulimba kwa Mphepete mwa nyanja kuli pamwamba pa 85. PBAT ndi copolymer ya magulu a aliphatic ndi onunkhira, omwe amaphatikiza zowonongeka kwambiri za polyester za aliphatic ndi makina abwino a polyesters onunkhira. Kukonzekera kwa PBAT ndikofanana kwambiri ndi LDPE, ndipo filimuyo imatha kuwombedwa ndi zida zopangira LDPE.
PBAT ili ndi biodegradability yabwino, ndipo zopangidwa ndi PBAT zimakhala zosavuta komanso zowonongeka mothandizidwa ndi tizilombo toyambitsa matenda ndi mabakiteriya, zomwe pamapeto pake zimasinthidwa kukhala carbon dioxide ndi madzi. Chifukwa cha ductility wake wabwino, elongation pa yopuma, kukana kutentha ndi katundu zotsatira, PBAT angagwiritsidwe ntchito mu makampani ma CD mapulasitiki, monga matumba kugula, zikwama zinyalala, etc., komanso ntchito tableware, mulch filimu ndi zina.
Nthawi yotumiza: Jan-19-2023