Chii chinonzi PET zvinhu? --Kuongorora Kwakakwana kwePolyethylene Terephthalate (PET)
Nhanganyaya: Basic Concepts yePET
Chii chinonzi PET? Uyu mubvunzo unowanzosangana nevanhu vazhinji muhupenyu hwavo hwezuva nezuva. PET, inozivikanwa sePolyethylene Terephthalate, ndeye thermoplastic polyester zvinhu iyo inoshandiswa zvakanyanya mumaindasitiri ekurongedza uye emachira. Nekunaka kwayo kwemuviri uye makemikari zvimiro, yave imwe yezvinhu zvakakosha mukugadzira kwemazuva ano.
Kemikari chimiro uye zvivakwa zvePET
PET inonzi polymer linear, inonyanya kubudiswa ne polycondensation ye terephthalic acid (TPA) uye ethylene glycol (EG) pasi pemamwe mamiriro ezvinhu. Nyaya yacho ine crystallinity yakanaka uye simba remagetsi uye inonyatsojeka.PET ine nzvimbo yekunyunguduka inosvika 250 ° C uye inodzivirira kupisa, kuchengetedza maitiro ayo emagetsi pakupisa kwepamusoro. Iyo zvakare ine yakanakisa makemikari kuramba uye UV kuramba, ichiibvumira kuti irambe yakagadzikana munzvimbo dzakasiyana siyana dzakaomarara.
PET inzvimbo huru dzekushandisa
Kana taziva kuti PET chii, ngatitarisei nzvimbo dzayo dzekushandisa.PET inoshandiswa zvakanyanya mukurongedza zvinhu, kunyanya muindasitiri yemabhodhoro echinwiwa. Nekuda kwekujeka kwayo uye zvipingamupinyi zvivakwa, mabhodhoro ePET anotora chikamu chakakura chemusika mune zvekudya uye zvinwiwa kurongedza. Pamusoro pechikamu chekurongedza, PET inoshandiswawo muindasitiri yemucheka, kunyanya kugadzirwa kwepolyester fibres, iyo inoshandiswa zvakanyanya mukupfeka, machira epamba, nezvimwe.
Ongororo yezvakanakira uye zvakaipira zvePET zvinhu
Zvakanakira zvePET zvinosanganisira kusimba kukuru, kusimba, huremu huremu uye kudzokorora. Hunhu hwayo hwekuvharira hwakanakisa hunobvumira chikafu uye zvinwiwa zviri mukati mepakeji kuti zvirambe zviri zvitsva. Uyezve, zvinhu zvePET zvine 100% zvinogona kushandiswa zvakare, izvo zvakakosha pakuchengetedzwa kwezvakatipoteredza nekuchengetedza zviwanikwa.PET inewo zvimwe zvinokanganisa, senge kugona kwayo kuburitsa huwandu hweethylene glycol kana terephthalic acid monomer kuburitswa pasi pemamwe mamiriro, kunyangwe zvinhu izvi zvine zvishoma zvinokanganisa hutano hwevanhu, zvichiri kuda kuchengetwa panguva yekushandiswa.
Muchidimbu: ramangwana rePET
Mubvunzo wekuti rudzii rwezvinhu zvePET wakapindurwa zvizere. PET zvinhu zvave chikamu chakakosha cheindastiri yemazuva ano nekuda kweakanakisa physicochemical zvimiro uye kuwanda kwetarisiro yekushandisa. Nekuvandudzwa kwekuziva kwezvakatipoteredza uye kuvandudza tekinoroji yekudzokorodza, huwandu hwemashandisirwo ePET hunotarisirwa kuwedzera kuwedzerwa, nepo maitiro ayo ekugadzira uye nzira dzekushandisa dzichiramba dzichiita hunyanzvi. Mune ramangwana, PET icharamba ichiita basa rakakosha mukurongedza, machira uye mamwe maindasitiri, kusimudzira kusimudzira kwakasimba kwemaindasitiri aya.