Ipulasitiki yinto esivame ukuyisebenzisa ezimpilweni zethu zansuku zonke. Zincane njengezikhwama zepulasitiki, amabhodlela ezingane, amabhodlela eziphuzo, amabhokisi okudla kwasemini, ukugoqwa kwepulasitiki, kukhulu njengefilimu yezolimo, ifenisha, izinto zikagesi, ukuphrinta kwe-3D, kanye namarokhethi nemicibisholo, amapulasitiki akhona.
Ipulasitiki igatsha elibalulekile lezinto eziphilayo ze-polymer, nezinhlobonhlobo eziningi, isivuno esikhulu nokusetshenziswa okubanzi. Ngezinhlobonhlobo zepulasitiki, zingahlukaniswa ngokulandelayo:
1. Ngokwendlela yokuziphatha lapho kushushubezwa, amapulasitiki angahlukaniswa abe yisayensi ye-thermoplastics kanye neye-thermosetting ngokuya ngokuziphatha kwayo lapho kufuthelana;
2. Ngokuya ngohlobo lokuphendula ngesikhathi sokuhlanganiswa kwe-resin epulasitiki, i-resin ingahlukaniswa ngamaplastikhi ama-polymer kanye nama-plastiki anepulangwe;
3. Ngokuya ngesimo se-resin macromolecule, amapulasitiki angahlukaniswa abe yizinhlobo ezimbili: ama-plastiki amorphous nama-crystalline plastiki;
4. Ngokwesilinganiso sokusebenza nokusetshenziswa, amapulasitiki angahlukaniswa abe amapulasitiki ajwayelekile, amapulasitiki wobunjiniyela, kanye namapulasitiki akhethekile.
Phakathi kwazo, amapulasitiki enhloso ejwayelekile asetshenziswa kakhulu ezimpilweni zethu zansuku zonke. Amapulasitiki enhloso ejwayelekile abhekisele kuplastikhi ngevolumu enkulu yokukhiqiza, ukunikezwa okubanzi, intengo ephansi futhi ifanele izicelo ezinkulu. Amapulasitiki ejwayelekile-jikelele anokusebenza okuhle kokubumba, futhi angabunjwa abe yimikhiqizo yezinhloso ezahlukahlukene ngezinqubo ezahlukahlukene. Amapulasitiki enhloso ejwayelekile afaka i-polyethylene (PE), i-polypropylene (PP), i-polyvinyl chloride (i-PVC), i-polystyrene (PS), i-acrylonitrile / butadiene / i-styrene (i-ABS).
Ngalesi sikhathi ngizokhuluma kakhulu ngezakhiwo ezisemqoka nokusetshenziswa kwe-polyethylene (PE). I-Polyethylene (PE) inezindawo ezinhle kakhulu zokucubungula nokusetshenziswa, iyinhlobonhlobo esetshenziswa kakhulu kuma-resins wokwenziwa, futhi amandla ayo okukhiqiza kudala abekwa kuqala kuzo zonke izinhlobo zepulasitiki. Izinhlaka ze-polyethylene ikakhulukazi zifaka i-polyethylene (LDPE) esezingeni eliphansi, i-polyethylene (LLDPE) eqondile, kanye ne-high-density polyethylene (HDPE).
I-Polyethylene isetshenziswa kabanzi emazweni ahlukahlukene, futhi ifilimu ingumsebenzisi wayo omkhulu kunayo yonke. Isebenzisa cishe i-77% ye-polyethylene esezingeni eliphansi kanye ne-18% ye-polyethylene ephakeme kakhulu. Ngaphezu kwalokho, imikhiqizo ebunjiwe yomjovo, izintambo nezintambo, imikhiqizo engenalutho, njll. Konke kuhlala kwisakhiwo sokusetshenziswa kwayo Inani elikhulu. Phakathi kwama-resin amahlanu enhloso ejwayelekile, ukusetshenziswa kwe-PE kuqala. I-Polyethylene ingabunjwa ngegalelo ukwenza amabhodlela ahlukahlukene, amathini, amathangi ezimboni, imigqomo nezinye iziqukathi; umjovo obunjiwe ukwenza izimbiza ezahlukahlukene, imiphongolo, obhasikidi, obhasikidi, obhasikidi nezinye iziqukathi zansuku zonke, amasundries ansuku zonke nefenisha, njll .; i-extrusion molding Yenza zonke izinhlobo zamapayipi, imichilo, imicu, ama-monofilaments, njll. Ngaphezu kwalokho, ingasetshenziswa futhi ekwenzeni izinto zokwakha izintambo nezintambo kanye nephepha lokwenziwa. Phakathi kwezicelo eziningi, izindawo ezimbili eziyinhloko zabathengi be-polyethylene ngamapayipi namafilimu. Ngokuthuthukiswa kokwakhiwa kwamadolobha, ifilimu yezolimo kanye nezimboni ezahlukahlukene zokudla, izindwangu nezimboni, ukuthuthukiswa kwale mikhakha yomibili sekubanzi kakhulu.
