Uma kuqhathaniswa nezinto ze-PET ne-PP, i-PP izoba ngcono kakhulu ekusebenzeni.
1. Umehluko encazelweni
I-PET(I-Polyethylene terephthalate) igama lesayensi yi-polyethylene terephthalate, eyaziwa ngokuthi i-polyester resin, i-resin material.
PP(i-polypropylene) igama lesayensi yi-polypropylene, okuyi-polymer eyakhiwe ngokuhlanganisa i-polymerization ye-propylene, futhi iyinhlaka yokwenziwa ye-thermoplastic.
2.Kusuka ezicini zomehluko
(1) I-PET
I-①PET i-polymer emhlophe qhwa noma ephuzi ngokukhanyayo enendawo ebushelelezi necwebezelayo.
Izinto ze-②PET zinokumelana nokukhathala okuhle, ukumelana nokuhuzuka nokuzinza kohlangothi, ukuguga okuphansi nobulukhuni obuphezulu, amandla okugoba angu-200MPa, kanye ne-elastic modulus engu-4000MPa.
③Impahla ye-PET inokusebenza okuhle kakhulu kokumelana nokushisa okuphezulu nokuphansi, engasetshenziswa isikhathi eside ebangeni lokushisa elingu-120 °C, futhi ingamelana nezinga lokushisa eliphakeme elingu-150 °C ukuze isetshenziswe isikhathi esifushane kanye nezinga lokushisa eliphansi elingu -70 ° C.
④ I-Ethylene glycol esetshenziswa ekukhiqizeni i-PET inezindleko eziphansi nokusebenza kwezindleko eziphezulu.
⑤Into ye-PET ayinabo ubuthi, inokuzinza okuhle ngokumelene namakhemikhali, futhi imelana nama-asidi abuthakathaka nezincibilikisi eziphilayo, kodwa ayimelani nokucwiliswa emanzini ashisayo ne-alkali.
(2) PP
I-①PP iwumsebenzi we-waxy omhlophe nokubukeka okusobala nokukhanyayo. Iwuhlobo olulula kakhulu lwama-resin asetshenziswa kakhulu.
Izinto ze-②PP zinezici ezinhle kakhulu zemishini nokumelana nokushisa okuhle, futhi izinga lokushisa lokusetshenziswa okuqhubekayo lingafinyelela ku-110-120 °C.
③PP impahla inokuqina okuhle kwamakhemikhali futhi ayihlangani namakhemikhali amaningi ngaphandle kwama-oxidants aqinile.
④PP impahla inezinga lokushisa eliphakeme lokuncibilika namandla aqinile, futhi ukubonakala kwefilimu kuphezulu.
Izinto ze-⑤PP zinokufakwa okuhle kakhulu kukagesi, kodwa kulula ukuguga futhi zinamandla okushaya ngamandla ezingeni lokushisa eliphansi.
3. Umehluko ekusetshenzisweni
I-PET isetshenziswa kabanzi, njengokuphotha ku-polyester fiber, okungukuthi, i-polyester; njengepulasitiki, ingashaywa emabhodleleni ahlukahlukene; njengezingxenye zikagesi, ama-bearings, amagiya, njll.
Izinto ze-PP zisetshenziswa kabanzi ekukhiqizeni umjovoimikhiqizo yokubumba, amafilimu, amapayipi, amapuleti, amafayibha, ama-coatings, njll., kanye nemishini yasendlini, umusi, amakhemikhali, ukwakhiwa, imboni yokukhanya kanye neminye imikhakha.
Isikhathi sokuthumela: Sep-13-2022