amakuru

Polyolefine ni iki?

Polyolefine ni umuryango wa polyethylene na polipropilen thermoplastique.Bikorerwa ahanini muri peteroli na gaze gasanzwe hakoreshejwe uburyo bwa polymerisation ya Ethylene na propylene.Ubwinshi bwabo bwabagize imwe muri plastiki zizwi cyane zikoreshwa muri iki gihe.

Ibyiza bya polyolefine

Hariho ubwoko bune bwa polyolefine:

• LDPE (polyethylene nkeya): LDPE isobanurwa nuburinganire bwa 0,910–0.940 g / cm3.Irashobora kwihanganira ubushyuhe bwa 80 ° C ubudahwema na 95 ° C mugihe gito.Byakozwe muburyo butandukanye cyangwa butagaragara, biroroshye guhinduka kandi birakomeye.
• LLDPE.LLDPE ifite imbaraga zingutu ningaruka zikomeye hamwe no kurwanya puncture kurusha LDPE.Nibihinduka cyane kandi birebire mugihe uhangayitse.Irashobora gukoreshwa mugukora firime yoroheje kandi ifite imbaraga zo kurwanya imiti.Ifite ibikoresho byiza byamashanyarazi.Ariko, ntabwo byoroshye gutunganya nka LDPE.
• HDPE (polyethylene yuzuye): HDPE izwiho imbaraga nini-zingana.Ubucucike bwa HDPE burashobora kuva kuri 0,93 kugeza 0,97 g / cm3 cyangwa 970 kg / m3.Nubwo ubucucike bwa HDPE buri hejuru cyane ugereranije nubwa polyethylene nkeya, HDPE ifite amashami make, ikayiha imbaraga zingirakamaro hamwe nimbaraga zikomeye kuruta LDPE.Birakomeye kandi birasobanutse kandi birashobora kwihanganira ubushyuhe buri hejuru (120 ° C mugihe gito).
• PP (polypropilene): Ubucucike bwa PP buri hagati ya 0.895 na 0,92 g / cm³.Kubwibyo, PP ni plastike yibicuruzwa bifite ubucucike buke.Ugereranije na polyethylene (PE) ifite imiterere yubukanishi irenze kandi irwanya ubushyuhe, ariko irwanya imiti mike.PP mubisanzwe birakomeye kandi byoroshye, cyane cyane iyo bigizwe na Ethylene.

Porogaramu ya polyolefine

Imico yihariye yubwoko butandukanye bwa polyolefine itanga uburyo butandukanye, nka:

• LDPE: firime ifata, imifuka yabatwara, firime yubuhinzi, amakarito y’amata, gutwika insinga z'amashanyarazi, imifuka yinganda zikomeye.
• LLDPE: kurambura firime, firime yo gupakira inganda, ibikoresho bikikijwe n'inkuta, hamwe ninshingano ziremereye, imifuka mito nini.
• HDPE: ibisanduku n'amasanduku, amacupa (kubicuruzwa byibiribwa, ibikoresho byo kwisiga, kwisiga), ibikoresho byokurya, ibikinisho, ibigega bya peteroli, gupfunyika inganda na firime, imiyoboro nibikoresho byo munzu.
• PP: gupakira ibiryo, harimo yogurt, inkono ya margarine, ibipfunyika byiza hamwe nudukoryo, ibikoresho bitarimo microwave, fibre ya tapi, ibikoresho byo mu busitani, ibikoresho byo kwa muganga nibikoresho, imizigo, ibikoresho byo mu gikoni, hamwe nu miyoboro.