PBAT (polybutylene terephthalate) chidimbu chepolybutylene terephthalate. Zvigadzirwa zvekugadzirira kwePBAT zvakanyanya adipic acid (AA), terephthalic acid (PTA), butylene glycol (BDO) semamonomers, zvichienderana nechimwe chikamu che esterification kana transesterification reaction uye polycondensation reaction kuti igadzire polyadipic acid/butylene terephthalate. ester, uyezve kuburikidza ne esterification, polycondensation uye granulation matanho matatu ekugadzirira chigadzirwa chekupedzisira. PBAT ine zvindori zvebenzene, saka ine yakakwira molecular thermal kugadzikana, asi yakaderera molecular degradation rate; mamorekuru anotora nzvimbo yakakura uye anokodzera kusanganiswa nemamwe mamorekuru; Iine maketani emafuta, ayo anovimbisa kuchinjika kwakanaka kwemaketani emamorekuru uye nokudaro yakanaka ductility.
PBAT inonzi semi-crystalline polymer, kazhinji tembiricha yecrystallization inosvika 110 °C, uye panonyungudika inenge 130 °C, uye density iri pakati pe1.18g/ml~1.3g/ml. Iyo crystallinity yePBAT inenge 30%, uye Shore yakaoma iri pamusoro pe85. PBAT icopolymer yealiphatic uye inonhuhwirira mapoka, iyo inobatanidza yakanakisa degradation properties yealiphatic polyesters uye yakanaka mechanical properties yeanonhuwirira polyesters. Kugadziriswa kwePBAT kwakafanana neLDPE, uye iyo firimu inogona kupeperetswa neLDPE yekugadzirisa michina.
PBAT ine biodegradability yakanaka, uye zvigadzirwa zvakagadzirwa nePBAT zviri nyore uye zvachose zvakasvibiswa nerubatsiro rwezvisikwa zvipenyu uye mabhakitiriya, zvinopedzisira zvashandurwa kuita carbon dioxide nemvura. Nekuda kwekunaka kwayo ductility, kureba panguva yekuzorora, kupisa kupisa uye kukanganisa zvivakwa, PBAT inogona kushandiswa muindasitiri yepurasitiki yekurongedza, senge mabhegi ekutenga, mabhegi emarara, nezvimwewo, uye zvakare inoshandiswa mutafuraware, mulch firimu uye mamwe minda.
Nguva yekutumira: Jan-19-2023