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 usebenziseke kwakhona. 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 lokusingqongileyo kunye nophuhliso lobugcisa bokurisayikilisha, uluhlu lwezicelo ze-PET kulindeleke ukuba lwandiswe ngakumbi, ngelixa inkqubo yokuvelisa kunye neendlela zokusetyenziswa ziya kuqhubeka zivelisa izinto ezintsha. Kwixesha elizayo, i-PET iya kuqhubeka idlala indima ebalulekileyo ekupakisheni, kwilaphu kunye namanye amashishini, ukukhuthaza uphuhliso oluzinzileyo lwala mashishini.