Uyini umehluko phakathi kwezikhwama zokudla kanye nezikhwama zepulasitiki ezijwayelekile?

1. I-polyethylene: Ingxenye eyinhloko yi-polyethylene resin, futhi inani elincane lokuthambisa, i-agent eguga nezinye izithasiselo zengezwa.I-polyethylene iyi-waxy engenaphunga, engenabuthi, eqinile enobisi.I-HDPE ihlukaniswe nge-polyethylene ephezulu-density, i-polyethylene ephansi futhi i-linear low density polyethylene ngokuya nge-morphology, okuqukethwe kanye nesakhiwo seketanga le-polymer.
Ipulasitiki ye-polyethylene ivame ukubizwa ngokuthi i-HDPE yengcindezi ephansi.Uma kuqhathaniswa ne-polyethylene esezingeni eliphansi ne-LLDPE, amapulasitiki e-polyethylene anokumelana nokushisa okuphezulu, ukumelana nokuhushulwa, i-hydrophilicity yomhwamuko wamanzi kanye nokumelana nokuqhekeka kwengcindezi ezindaweni zemvelo.Ngaphezu kwalokho, ipulasitiki ye-polyethylene inamandla amahle kakhulu we-dielectric, ukumelana nomthelela kanye nokumelana nokubanda.Ilungele imikhiqizo engenalutho (njengamabhodlela engilazi, amabhodlela okuhlanza), ukubumba umjovo, ukubumba umjovo nezinye izimboni.
I-linear low-density polyethylene (LINEARLOWDENSYPOYETHYLENE, LLDPE) i-polymer ekhiqizwa i-polymerization ye-ethylene kanye nenani elincane lama-olefin athuthukisiwe phambi kwe-catalyst.Ukubukeka kwayo kufana nokwe-polyethylene ephansi, kodwa isicwebezelisi saso silungile, ngokuphakama okuphansi kwezinga lokushisa kanye neModulus ephezulu, ukumelana nokugoba, ukumelana nokuqhekeka kokucindezeleka komhlaba, umthelela ophansi wokushisa amandla okucindezela nezinye izinzuzo.
Ngokuyinhloko isetshenziselwa ukubumba umjovo, ukukhishwa, ukubunjwa kokushaywa kanye nezinye izindlela zokubumba ukukhiqiza amafilimu, izidingo zansuku zonke, amapayipi, izintambo kanye nezintambo.
2. I-Polypropylene: Ingxenye eyinhloko yi-polypropylene resin, ene-gloss ephezulu kanye nokudluliswa kokukhanya.Ukusebenza kokuvalwa kokushisa kubi kune-PE, kodwa kungcono kunezinye izinto zepulasitiki.
1. Ukusebenza kwe-Barrier kungcono kune-PE, amandla ayo, ubulukhuni kanye nokuqina kungcono kune-PE;
2. Impilo nokuphepha kuphakeme kunezemidlalo
3. Inokumelana nokushisa okuhle kakhulu futhi ingasetshenziswa isikhathi eside ekushiseni kuka-100 degrees Celsius, kodwa ukumelana kwayo okubandayo kuthuthukisa ukusebenza kwe-HDPE futhi iba brittle ku--17 degrees Celsius.
Isikhwama sokupakisha esenziwe ngefilimu yepulasitiki siphakeme kune-platinum, izinto zokusetshenziswa ezisobala nezinto ezimelana nezinyembezi ngokumelana nokugqoka kanye nokumelana nomswakama, kodwa umphumela wokupakisha wokupakisha umpofu futhi izindleko ziphansi.Ingasetshenziselwa ukupakisha okubuyisela emuva ama-lollipops nokudla okulula.Ingenziwa ibe yifilimu yokupakisha enciphayo eshisisa ukudla, efana nezikhwama zokudla kanye nezikhwama zokufaka zepulasitiki nezinye eziyinhlanganisela.
3. I-Polystyrene: I-polymer ene-styrene monomer njengengxenye eyinhloko.Lesi sici sisobala futhi siyacwebezela.
1. Ukumelana nomswakama kubi kune-PE, ukuzinza kwamakhemikhali kuvamile, ukuqina kuphezulu, kodwa i-brittleness inkulu.
2. Ukumelana okuhle kwezinga lokushisa eliphansi, kodwa ukumelana nezinga lokushisa eliphansi, akukwazi ukudlula ku-60≤80℃.
3. Isici esihle sokuphepha.