Amapulasitiki ebanga lokudla ahlukaniswe: PET (polyethylene terephthalate), HDPE (high density polyethylene), LDPE (low density polyethylene), PP (polypropylene), PS (polystyrene), PC nezinye izigaba

I-PET (i-polyethylene terephthalate)

Ukusetshenziswa okuvamile: amabhodlela amanzi amaminerali, amabhodlela esiphuzo se-carbonated, njll.
Amabhodlela amanzi amaminerali namabhodlela esiphuzo se-carbonated enziwe ngale nto.Amabhodlela eziphuzo awakwazi ukugaywa kabusha ukuze athole amanzi ashisayo, futhi le nto iyakwazi ukumelana nokushisa kufika ku-70°C.Ifanele kuphela iziphuzo ezifudumele noma eziqandisiwe, futhi igogeka kalula uma igcwele uketshezi olunezinga lokushisa eliphezulu noma ishisiwe, nezinto eziyingozi kubantu eziphumayo.Ngaphezu kwalokho, ososayensi bathole ukuthi ngemva kwezinyanga ezingu-10 zokusetshenziswa, lo mkhiqizo wepulasitiki ungase ukhiphe izinto ezibangela umdlavuza ezinobuthi kubantu.

Ngalesi sizathu, amabhodlela eziphuzo kufanele alahlwe lapho eseqedile futhi angasetshenziswa njengezinkomishi noma izitsha zokugcina ezinye izinto ukugwema izinkinga zempilo.
I-PET yaqala ukusetshenziswa njengefayibha yokwenziwa, kanye nasefilimini nakumatheyiphu, futhi ngo-1976 kuphela lapho yasetshenziswa khona emabhodleleni eziphuzo.I-PET yayisetshenziswa njengokugcwalisa kulokho okuvame ukwaziwa ngokuthi 'ibhodlela le-PET'.

Ibhodlela le-PET linobulukhuni nokuqina okuhle kakhulu, lilula (kuphela 1/9 kuya ku-1/15 wesisindo sebhodlela lengilazi), kulula ukulithwala nokulisebenzisa, lidla amandla amancane ekukhiqizeni, futhi alingeneli, aliguquguquki futhi liyamelana. ama-acids nama-alkali.

Eminyakeni yamuva nje, isibe yisitsha esibalulekile sokugcwalisa iziphuzo ze-carbonated, itiye, ijusi yezithelo, amanzi okuphuza ahlanganisiwe, iwayini ne-soy sauce, njll Ngaphezu kwalokho, ama-ejenti okuhlanza, ama-shampoos, amafutha okudla, ama-condiments, ukudla okumnandi, izidakamizwa, izimonyo. , kanye nophuzo oludakayo luye lwasetshenziswa ngobuningi emabhodleleni okupakisha.

I-HDPE(I-High Density Polyethylene)

Ukusetshenziswa okuvamile: imikhiqizo yokuhlanza, imikhiqizo yokugeza, njll.
Iziqukathi zepulasitiki zokuhlanza imikhiqizo, imikhiqizo yokugeza, izikhwama zepulasitiki ezisetshenziswa ezitolo ezinkulu kanye nezitolo ezinkulu zenziwa kakhulu ngale nto, zingamelana nezinga lokushisa eliphakeme elingu-110 ℃, ezimakwe ngezikhwama zepulasitiki zokudla zingasetshenziswa ukubamba ukudla.Iziqukathi zepulasitiki zemikhiqizo yokuhlanza nemikhiqizo yokugeza zingasetshenziswa kabusha ngemva kokuhlanza ngokucophelela, kodwa lezi zitsha ngokuvamile azihlanzwa kahle, zishiya izinsalela zemikhiqizo yokuhlanza yasekuqaleni, ziguqule zibe yindawo yokuzalela amagciwane kanye nokuhlanza okungaphelele, ngakho-ke kungcono kakhulu zisebenzise kabusha.
I-PE iyipulasitiki esetshenziswa kakhulu embonini nasekuphileni, futhi ngokuvamile ihlukaniswe yaba izinhlobo ezimbili: i-polyethylene ephezulu kakhulu (i-HDPE) ne-polyethylene ephansi (LDPE).I-HDPE inezinga eliphezulu lokuncibilika kune-LDPE, ilukhuni futhi imelana kakhulu nokuguguleka koketshezi olubolayo.

I-LDPE itholakala yonke indawo empilweni yesimanje, kodwa hhayi ngenxa yamabhokisi enziwe ngawo, kodwa ngenxa yezikhwama zepulasitiki ongazibona yonke indawo.Iningi lezikhwama zepulasitiki namafilimu enziwe nge-LDPE.

I-LDPE (I-Low Density Polyethylene)

Ukusetshenziswa okuvamile: ifilimu yokudla, njll.
Ifilimu yokudla, ifilimu yepulasitiki, njll. zonke zenziwe ngale nto.Ukumelana nokushisa akunamandla, ngokuvamile, ifilimu yokunamathela ye-PE efanelekayo emazingeni okushisa angaphezu kuka-110 ℃ izovela i-hot melt mkhuba, izoshiya umzimba womuntu othile awukwazi ukubola i-ejenti yepulasitiki.Futhi, lapho ukudla kushisa efilimu yokudla, amafutha ekudleni angahlakaza kalula izinto eziyingozi efilimu.Ngakho-ke, kubalulekile ukususa ukugoqa kwepulasitiki ekudleni okuku-microwave kuqala.

I-PP (i-polypropylene)

Ukusetshenziswa okuvamile: amabhokisi e-microwave lunch
Amabhokisi esidlo sasemini e-microwave enziwe ngale nto, ekwazi ukumelana no-130°C futhi inokungafihli kahle.Leli ukuphela kwebhokisi lepulasitiki elingafakwa kuhhavini ye-microwave futhi lingasetshenziswa kabusha ngemva kokuhlanza ngokucophelela.

Kubalulekile ukuqaphela ukuthi ezinye iziqukathi ze-microwave zenziwe nge-PP 05, kodwa isivalo senziwe nge-PS 06, esinokucaca okuhle kodwa esingamelani nokushisa okuphezulu, ngakho-ke asikwazi ukufakwa ku-microwave kanye nesitsha.Ukuze ube ohlangothini oluphephile, susa isivalo ngaphambi kokufaka isitsha kuhhavini ye-microwave.
I-PP ne-PE kungathiwa izelamani ezimbili, kodwa ezinye izakhiwo zomzimba nezomshini zingcono kune-PE, ngakho-ke abenzi bamabhodlela bavame ukusebenzisa i-PE ukwenza umzimba webhodlela, futhi basebenzise i-PP ngobulukhuni obukhulu namandla ukwenza i-cap nokubamba. .

I-PP inezinga eliphezulu lokuncibilika elingu-167°C futhi iyakwazi ukumelana nokushisa, futhi imikhiqizo yayo ingavalwa inzalo.Amabhodlela avamile enziwe nge-PP ubisi lwe-soy namabhodlela obisi lwelayisi, kanye namabhodlela e-100% yejusi yezithelo ehlanzekile, iyogathi, iziphuzo zejusi, imikhiqizo yobisi (njenge-pudding), njll Iziqukathi ezinkulu, njengamabhakede, imigqomo, osinki bempahla yokuwasha, obhasikidi, obhasikidi, njll., ngokuvamile benziwa nge-PP.

I-PS (i-polystyrene)

Ukusetshenziswa okuvamile: izitsha zamabhokisi ama-noodle, amabhokisi okudla okusheshayo
Izinto ezisetshenziselwa ukwenza izitsha zama-noodle namabhokisi okudla okusheshayo agwebu.Iyakwazi ukumelana nokushisa nokubanda, kodwa ayikwazi ukufakwa kuhhavini we-microwave ukuze kugwenywe ukukhishwa kwamakhemikhali ngenxa yamazinga okushisa aphezulu.Akufanele isetshenziselwe ama-asidi aqinile (isb. ijusi yewolintshi) noma izinto ezine-alkaline, njengoba i-polystyrene, engeyinhle kubantu, ingabola.Ngakho-ke, kufanele ugweme ukupakisha ukudla okushisayo ezitsheni zokudla okusheshayo ngangokunokwenzeka.
I-PS inokumuncwa okuphansi kwamanzi futhi izinzile ngohlangothi, ngakho-ke ingabunjwa ngomjovo, icindezelwe, ikhishwe noma i-thermoform.Ingabunjwa ngomjovo, icindezele ibunjwe, ikhishwe futhi yenziwe i-thermoform.Ivamise ukuhlukaniswa njengenegwebu noma elingenagwebu kuye ngokuthi ike yabhekana yini nenqubo “yokukhihliza amagwebu”.

PCnabanye

Ukusetshenziswa okuvamile: amabhodlela amanzi, izinkomishi, amabhodlela obisi
I-PC iyinto esetshenziswa kabanzi, ikakhulukazi ekwenziweni kwamabhodlela obisi nezinkomishi zasemkhathini, futhi iyimpikiswano ngoba iqukethe i-Bisphenol A. Ochwepheshe baveza ukuthi ngokombono, inqobo nje uma i-BPA ingashintshwa ngo-100% ibe isakhiwo sepulasitiki ngesikhathi sokukhiqizwa kwe PC, kusho ukuthi umkhiqizo awuna-BPA ngokuphelele, ingasaphathwa eyokuthi awukhululwa.Kodwa-ke, uma inani elincane le-BPA lingaguqulwa libe yisakhiwo sepulasitiki se-PC, lingakhishwa libe ukudla noma iziphuzo.Ngakho-ke, ukunakekelwa okwengeziwe kufanele kuthathwe uma usebenzisa lezi zitsha zepulasitiki.
Uma izinga lokushisa le-PC liphakeme, i-BPA ikhishwa futhi ikhishwa ngokushesha.Ngakho-ke, amanzi ashisayo akufanele ahanjiswe emabhodleleni amanzi e-PC.Uma igedlela lakho lingu-07, okulandelayo kunganciphisa ubungozi: Ungalishisi lapho lisetshenziswa futhi ungalibeki elangeni eliqondile.Ungawashi igedlela kumshini wokuwasha izitsha noma kumshini wokuwasha izitsha.

Ngaphambi kokuyisebenzisa okokuqala, yigeze nge-baking soda namanzi afudumele bese uyomisa ngokwemvelo ekamelweni lokushisa.Kutuswa ukuthi uyeke ukusebenzisa isiqukathi uma sinamathonsi noma amakhefu, njengoba imikhiqizo yepulasitiki ingathwala kalula amagciwane uma inomgodi ocolekile.Gwema ukusebenzisa ngokuphindaphindiwe izitsha zepulasitiki ezonakele.