Uyini umehluko phakathi kwengcindezi ephezulu ye-polyethylene ne-polyethylene ephansi?

I-Polyethylene iyi-resin ye-thermoplastic eyenziwe nge-polymerization ye-ethylene, ingenye evame kakhulu Amapulasitiki nemikhiqizo , ukukhiqizwa kwaminyaka yonke kwamathani angaphezu kwezigidi eziyi-100 we-polyethylene resin, accounting ama-34% emakethe yepulasitiki ephelele. Amanye amapulasitiki ajwayelekile afaka isilwane (i-polyethylene terephthalate) .pvc (polyvinyl chloride) .pp (Polypropylene) .pps (Polyphopylene Sulfide) nokunye.

I-PETYMAR ejwayelekile ye-Crystalline Polymer, iphuzu elincibilikayo le-130 ℃ ~ 145 ℃, eliphawulwa ngokunganambitha, okungenamqondo, okungelona ubuthi, okungabonakali, izinhlayiya ezinobuthi, ezingezona ezinobuthi, izinhlayiya ezimhlophe ze-waxy.

I-Polyethylene ephezulu (LDPE), igama eliphelele le-High-density Polyethylene, evame ukubizwa ngokuthi "ingcindezi ephezulu" embonini; I-Polyethylene (HDPE) ephansi (HDPE), igama eligcwele lengcindezi ephezulu ye-polyethylene, okubizwa ngokuthi "ingcindezi ephansi".

Ingcindezi ephansi: Ukuhlanzeka okuphezulu kwe-ethylene njengokuqukethwe okuluhlaza, i-propylene noma i-1-butene njenge-comonomonomomer, i-alkane njenge-solvent, esebenzisa amazinga okushisa aphezulu (65-85) nengcindezi (0.1-0.7MPA) Isixazululo I-polymerization yenziwa, ilandelwa ukwahlukana, ukomisa, ukudedelwa kanye nokuthambekela.

I-Polyethylene yengcindezi ephansi: Isetshenziselwa kakhulu ukubumba okushayayo, ukukhiqiza amabhodlela ahlukahlukene, amathini, imigqomo kanye neziqukathi zokubumba, amathiphu okubumba amapayipi ahlukahlukene, ifilimu, ukukhishwa kwesikhwama, i-bagrew wire, Monofilament, njll.

Kunezicelo eziningi ze-HDPE: umdwebo (okungukuthi, i-wireg eyisikhwama elukiwe), ukubumba okuhlukahlukene (izidingo zansuku zonke), ifilimu elihlanganisiwe (okungukuthi, ukubumba amafilimu), okungekho (okubumba amabhodlela afana namanye amabhodlela.