Yintoni imathiriyeli yePET? --Uhlalutyo oluBanzi lwePolyethylene Terephthalate (PET)
Intshayelelo: Iingcamango ezisisiseko zePET
Yintoni i-PET? Lo ngumbuzo abantu abaninzi abadla ngokudibana nawo kubomi babo bemihla ngemihla. I-PET, eyaziwa ngokuba yi-Polyethylene Terephthalate, yimathiriyeli ye-thermoplastic polyester esetyenziswa kakhulu kumashishini okupakisha kunye nempahla yelaphu. Ngeempawu zayo ezibalaseleyo zomzimba kunye neekhemikhali, iye yaba yenye yezinto eziyimfuneko kwimveliso yanamhlanje.
Ubume beKhemikhali kunye neempawu zePET
I-PET i-polymer yomgca, eyenziwa ngokukodwa nge-polycondensation ye-terephthalic acid (TPA) kunye ne-ethylene glycol (EG) phantsi kweemeko ezithile. Izinto eziphathekayo zine-crystallinity elungileyo kunye namandla omatshini kwaye zicacile kakhulu.PET inendawo yokunyibilika malunga ne-250 ° C kwaye iyakwazi ukumelana nobushushu, igcina iimpawu zayo zomatshini kumaqondo aphezulu aphezulu. Ikwanayo nokumelana neekhemikhali okugqwesileyo kunye nokuxhathisa kwe-UV, ukuyivumela ukuba ihlale izinzile kwiindawo ezahlukeneyo ezinzima.
Iindawo eziphambili ze-PET zesicelo
Emva kokuba siyazi ukuba yiyiphi i-PET, makhe sijonge kwiindawo zayo zesicelo.PET isetyenziswa ngokubanzi kwizinto zokupakisha, ngakumbi kwishishini lebhotile yesiselo. Ngenxa yokusekuhleni kwayo okugqwesileyo kunye nezithintelo, iibhotile ze-PET zithatha isabelo esikhulu semarike ekupakishweni kokutya nesiselo. Ukongeza kwicandelo lokupakisha, i-PET iphinda isetyenziswe kumashishini e-textile, ngokukodwa ukuveliswa kweefayili ze-polyester, ezisetyenziswa kakhulu kwiimpahla, iingubo zasekhaya, njl.
Uhlalutyo lweenzuzo kunye nokungalunganga kwezinto ze-PET
Iingenelo ze-PET ziquka amandla aphezulu, ukuqina, ubunzima obulula kunye nokuphinda kusetyenziswe. Iimpawu zayo ezigqwesileyo zomqobo zivumela ukutya kunye neziselo ngaphakathi kwepakethe ukuba zihlale zintsha. Ngaphezu koko, izinto ze-PET zi-100% ziphinda zisetyenziswe, nto leyo ibalulekile ekukhuselweni kwendalo kunye nokugcinwa kwezixhobo.PET nayo ineziphene ezithile, ezinjengokukwazi ukuvelisa amanani omkhondo we-ethylene glycol okanye i-terephthalic acid monomer ukukhululwa phantsi kweemeko ezithile, nangona ezi zinto zinempembelelo encinci kwimpilo yabantu, zisafuna ukunakekelwa ngexesha lokusetyenziswa.
Isishwankathelo: ikamva le-PET
Umbuzo wokuba luhlobo luni lwezinto eziphathekayo iPET uye waphendulwa ngokubanzi. Izixhobo ze-PET ziye zaba yinxalenye ebalulekileyo yoshishino lwangoku ngenxa yeempawu zazo ze-physicochemical ezigqwesileyo kunye noluhlu olubanzi lwamathemba okusetyenziswa. Ngokwandiswa kolwazi ngokusingqongileyo kunye nophuhliso lobuchwepheshe bokurisayikilisha, uluhlu lwezicelo zePET kulindeleke ukuba lwandiswe ngakumbi, ngelixa inkqubo yokuvelisa kunye neendlela zokusetyenziswa ziya kuqhubeka zivelisa izinto ezintsha. Kwixesha elizayo, i-PET iya kuqhubeka idlala indima ebalulekileyo ekupakishweni, kwilaphu kunye namanye amashishini, ukukhuthaza uphuhliso oluzinzileyo lwala mashishini.