PBAT (polybutylene terephthalate) waa soo gaabinta polybutylene terephthalate.Qalabka ceeriin ee loogu talagalay diyaarinta PBAT waa inta badan adipic acid (AA), terephthalic acid (PTA), butylene glycol (BDO) sida monomers, marka loo eego qayb gaar ah oo ka mid ah falcelinta esterification ama falcelinta transesterification iyo falcelinta polycondensation si loo soo saaro polyadipic acid / butylene terephthalate. ester, ka dibna iyada oo loo marayo esterification, polycondensation iyo granulation saddex tallaabo si loo diyaariyo alaabta kama dambaysta ah.PBAT waxay ka kooban tahay siddooyin benzene ah, sidaas darteed waxay leedahay xasilloonida kuleylka molecular oo sarreeya, laakiin heerka hoos u dhaca molecular;molecules waxay haysteen meel wayn waxayna ku haboon yihiin inay ku qasmaan unugyadu kale;Waxay leedahay silsilado dufan ah, kuwaas oo dammaanad qaadaya dabacsanaanta wanaagsan ee silsiladaha molecular iyo sidaas darteed ductility wanaagsan.
PBAT waa polymer semi-crystalline ah, inta badan heerkulka crystallization waa ku dhawaad 110 ° C, barta dhalaalina waa qiyaastii 130 °C, cufnaantana waxay u dhaxaysaa 1.18g/ml ~ 1.3g/ml.Kristalinity ee PBAT waa qiyaastii 30%, iyo adkaanta Shore waa ka sarreeyaa 85. PBAT waa copolymer ah kooxaha aliphatic iyo caraf udgoon, kaas oo isku daraa sifooyinka nabaad guurka wanaagsan ee polyesters aliphatic iyo sifooyinka farsamo wanaagsan ee polyesters udgoon.Waxqabadka farsamaynta ee PBAT wuxuu aad ugu eg yahay LDPE, filimkana waxaa lagu afuufi karaa qalabka wax lagu sameeyo ee LDPE.
PBAT waxay leedahay biodegradability wanaagsan, iyo alaabooyinka lagu sameeyay PBAT si fudud oo gebi ahaanba u xumaaday iyadoo la kaashanayo microorganisms dabiiciga ah iyo bakteeriyada, ugu dambeyntii waxay isu rogaan kaarboon laba ogsaydh iyo biyo.Sababtoo ah ductility wanaagsan, dhererka nasashada, caabbinta kulaylka iyo guryaha saamaynta, PBAT waxaa loo isticmaali karaa warshadaha baakadaha caagga ah, sida bacaha wax iibsiga, bacaha qashinka, iwm, iyo sidoo kale loo isticmaalo alaabta miiska, filimka mulch iyo beeraha kale.
Waqtiga boostada: Jan-19-2023