Gulu la Polyethylene

Gulu la Polyethylene

Gulu la polyethylene

Polyethylene lagawidwa mkulu kachulukidwe polyethylene (HDPE), otsika kachulukidwe polyethylene (LDPE) ndi liniya otsika osalimba polyethylene (LLDPE) malinga ndi njira polymerization, maselo kulemera ndi unyolo dongosolo.

LDPE

Katundu: zosakoma, zopanda fungo, zopanda poizoni, zopanda pake, tinthu tating'ono ta tinthu tating'ono ta mkaka toyera, kachulukidwe pafupifupi 0.920 g/cm3, malo osungunuka 130℃~145℃. Insoluble m'madzi, sungunuka pang'ono mu ma hydrocarbons, etc. Imatha kupirira kukokoloka kwa ma acid ambiri ndi ma alkalis, imakhala ndi mayamwidwe otsika, imatha kukhalabe yosinthika pamatenthedwe otsika, ndipo imakhala ndi kutchinjiriza kwamagetsi.

Njira Yopanga:

Pali makamaka mitundu iwiri ya njira yothamanga kwambiri ya chubu ndi ketulo. Pofuna kuchepetsa anachita kutentha ndi kuthamanga, tubular ndondomeko jinirally amatenga otsika kutentha mkulu-ntchito kuyambitsa dongosolo polymerization, mkulu-kuyera ethylene ntchito monga waukulu zopangira, propylene, propane, etc. ntchito ngati kachulukidwe zosintha. The polymerization inachitika pansi pa 330 ° C ndi 150-300MPa. Polima wosungunuka kuti amayambitsa polymerization mu riyakitala ayenera utakhazikika ndi kupatukana pa kuthamanga, sing'anga kuthamanga ndi otsika kuthamanga. Pambuyo pa kupatukana, imatumizidwa ku cholowera chapamwamba kwambiri (30 MPa) kompresa, pomwe mpweya wozungulira wocheperako umakhazikika ndikulekanitsidwa ndikutumizidwa ku compressor yotsika (0.5 MPa) kuti ibwezeretsenso, pomwe polyethylene yosungunuka. imatumizidwa ku granulator pambuyo pa kupatukana kwakukulu ndi kutsika kwapakati. Kwa granulation m'madzi, panthawi ya granulation, mabizinesi amatha kuwonjezera zowonjezera molingana ndi magawo osiyanasiyana ogwiritsira ntchito, ndipo ma granules amapakidwa ndikutumizidwa.

Gwiritsani ntchito:

Njira zopangira monga jekeseni, kuumba kwa extrusion, ndi kuwomba kungagwiritsidwe ntchito. Amagwiritsidwa ntchito makamaka ngati agricultural filimu, filimu yonyamula mafakitale, filimu yopangira mankhwala ndi chakudya, zida zamakina, zofunikira zatsiku ndi tsiku, zomangira, waya, kutsekereza chingwe, zokutira ndi mapepala opangira.

LLDPE

Katundu: Chifukwa mamolekyu a LLDPE ndi LDPE mwachiwonekere ndi osiyana, katundu wake ndi wosiyana. Poyerekeza ndi LDPE, LLDPE ili ndi mphamvu yabwino kwambiri yolimbana ndi kupsinjika kwa chilengedwe komanso kutsekemera kwamagetsi, kukana kutentha kwakukulu, kukana kwamphamvu komanso kukana kubowola.

Njira Yopanga:

Utoto wa LLDPE umapangidwa makamaka ndi zida zonse za polyethylene, ndipo njira zopangira zoyimira ndi Innovene process ndi UCC's Unipol process.

Gwiritsani ntchito:

Kudzera jekeseni akamaumba, extrusion, kuwomba akamaumba ndi njira zina akamaumba, kupanga mafilimu, zofunika tsiku ndi tsiku, mapaipi, mawaya ndi zingwe, etc.

HDPE

Katundu: Natural, cylindrical kapena oblate particles, yosalala particles, tinthu kukula ayenera kukhala 2 mm ~ 5 mm mbali iliyonse, palibe zonyansa makina, Thermoplastic. Ufa ndi ufa woyera, ndipo mankhwala oyenerera amaloledwa kukhala ndi chikasu pang'ono mtundu. Ndiwosungulumwa mu zosungunulira wamba pa kutentha kwa chipinda, koma amatha kutupa mu aliphatic hydrocarbons, ma hydrocarbon onunkhira ndi ma halogenated hydrocarbons akakumana nawo kwa nthawi yayitali, ndipo amasungunuka pang'ono mu toluene ndi asidi acetic pa kutentha kopitilira 70 °C. Oxidation imachitika mukatenthedwa mumlengalenga komanso chifukwa cha kuwala kwa dzuwa. Kugonjetsedwa ndi kukokoloka kwa asidi ambiri ndi alkali. Imakhala ndi mayamwidwe amadzi otsika, imatha kukhalabe yosinthika pakatentha pang'ono, ndipo imakhala ndi magetsi ambiri.

Njira Yopanga:

Njira ziwiri zopangira zimatengedwa: njira ya gasi ndi njira ya slurry.

Gwiritsani ntchito:

Kugwiritsa ntchito jekeseni akamaumba, nkhonya akamaumba, extrusion akamaumba, rotomolding ndi njira akamaumba kupanga zinthu filimu, zofunika tsiku ndi tsiku ndi mafakitale ntchito zosiyanasiyana zotengera dzenje, mapaipi, matepi calendering ndi tayi matepi ma CD, zingwe, maukonde nsomba ndi ulusi woluka, Waya ndi chingwe etc.

Gulu la Polyethylene

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