Izinhlobo ezivamile kanye nokwethulwa kwepulasitiki.

Ipulasitiki, okungukuthi, irabha yepulasitiki, i-granule yerabha eyakhiwe yi-polymerization yemikhiqizo yokucwenga i-petroleum kanye nezakhi zamakhemikhali ezithile.Icutshungulwa abakhiqizi ukwenza imikhiqizo yepulasitiki yomumo ohlukahlukene.

1. Ukuhlukaniswa kwamapulasitiki: Ngemva kokucubungula nokushisa, amapulasitiki angahlukaniswa ngezigaba ezimbili: i-thermoplastic ne-thermosetting.Okujwayelekile yilokhu okulandelayo:
1) I-PVC-i-polyvinyl chloride
2) I-PE—i-polyethylene, i-HDPE—i-polyethylene e-high density, i-LDPE—i-polyethylene ephansi
3) PP-Polypropylene
4) I-PS-i-polystyrene
5) Ezinye izinto ezijwayelekile zokuphrinta yiPC, PT, PET, EVA, PU, ​​KOP, Tedolon, njll.

2. Indlela elula yokuhlonza yezinhlobo ezahlukene zamapulasitiki:
Hlukanisa ngokubukeka:
1) Itheyiphu ye-PVC ithambile futhi inokwandiswa okuhle kakhulu.Ngaphezu kwalokho, kukhona nezinye izinto eziqinile noma ezinegwebu, njengamapayipi amanzi, iminyango eshelelayo, njll.
2) I-PS, i-ABS, ukuthungwa okuthambile nokuphukayo, ngokuvamile ukubunjwa komjovo ongaphezulu.
3) I-HDPE ku-PE ilula ngokuthungwa, inhle ngokuqina futhi i-opaque, kuyilapho i-LDPE idonsa kancane.
I-4) I-PP inokungafihli okuthile futhi i-brittle.

Hlukanisa ngokwezakhiwo zamakhemikhali:
1) I-PS, i-PC kanye ne-ABS ingancibilika ku-toluene ukuze kugqwese indawo yayo.
2) I-PVC ayincibiliki nge-benzene, kodwa ingancibilika nge-ketone solvent.
3) I-PP ne-PE inokumelana okuhle kwe-alkali nokumelana okuhle kakhulu kwe-solvent.

Hlukanisa ngokusho kokuvutha:
I-1) Uma i-PVC ishiswa ngomlilo, izobola iphunga le-chlorine, futhi uma umlilo usuhamba, ngeke ushise.
I-2) I-PE izokhiqiza iphunga le-waxy lapho ivutha, ngamaconsi e-waxy, kodwa i-PP ngeke, futhi bobabili bazoqhubeka bevutha ngemva kokushiya umlilo.

3. Izici zamapulasitiki ahlukahlukene
I-1) Izici ze-PP: Nakuba i-PP inokucaca, ukuthungwa kwayo kulula ukuphuka, okungcono ukupakisha ukudla.Izinhlobonhlobo zemikhiqizo ehlukene zingatholakala ngokuthuthukisa amaphutha abo okuphuka.Isibonelo: I-OPP ne-PP zinwetshwa ngokulinganayo ukuze kuthuthukiswe amandla azo, avame ukusetshenziswa emaphaketheni angaphandle amathawula ephepha nezinti.
2) Izici ze-PE: I-PE yenziwe nge-ethylene.Ukuminyana kwe-LDPE cishe ku-0.910 g/cm-0.940 g/cm.Ngenxa yokuqina kwayo okuhle kakhulu kanye nekhono lokuvikela umswakama, ivame ukusetshenziselwa ukupakisha ukudla, ukupakisha izimonyo, njll.;Ukuminyana kwe-HDPE cishe ku-0.941 g/cm noma ngaphezulu.Ngenxa yokuthungwa kwayo okukhanyayo nokumelana nokushisa, kuvame ukusetshenziswa ezikhwameni nasezikhwameni ezihlukahlukene ezilula.