Mkulu osalimba polyethylene: ntchito

Low kachulukidwe polyethylene amapangidwa kuchokera ethylene woyeretsedwa, ndipo ngati chothandizira organometallic protrude triethylaluminum ndi titaniyamu tetrachloride. Pakuti polyethylene makampani zoweta amagwiritsa mitundu zamakono angapo amene amasiyana ziwembu mtundu, mphamvu riyakitala, njira kukonza polyethylene pa chothandizira ntchito.

umisiri

Nthawi zambiri inatenga zinthu zitatu zotsatizana la: polymerization wa ethylene, kuyeretsedwa kwake kwa chothandizira ndi chomaliza kuyanika ndondomeko. Pambuyo oyambitsa njira ya triethylaluminum ndi titaniyamu tetrachloride mu cyclohexane akuwonjezeka ndi mafuta. Usavutike 50 C awiri peresenti njira unaperekedwa kwa riyakitala, pamene dongosolo mpweya Nyamulani ya ethylene anawonjezera. Yogwira amalimbikitsa gawo misa ya ethylene kuti polyethylene polymerization.

Kuchotsa chothandizira ku polima chifukwa anali osasankhidwa kuchokera mankhwala kuwonongeka ndi kusungunuka. The polyethylene centrifuge kutsukidwa kwa chothandizira ntchito methanol.

Polyethylene wa mochedwerako pambuyo rinsing ndi wrung kunja, ndipo thereto akuwonjezeka zinthu kwa kuwongolera. Powunikira wa stabilizer ntchito, ethylene glycol ndi sodium wochuluka nitrophosphate, ndi kulipanga kukhala shinier, Sera ntchito.

Pomaliza, polyethylene pansi pa kuyanika ndi granulation. Polyethylene wa mochedwerako amapangidwa mu mawonekedwe a granules ndi ufa.

Mipope zopangidwa otsika kachulukidwe polyethylene

Iwo amagwiritsa ntchito yoika machitidwe gasi, kuchimbudzi ndi madzi.

Mipope chopangidwa ndi njira yothandizira extrusion. Monga zopangira kwa kupanga polyethylene mu granules mutuluka.

Chuma m'mayiko otukuka ntchito mipope ngati pafupifupi kachitidwe.

HDPE mipope sindikufuna kusokoneza khalidwe madzi, chifukwa malinga mkati mwa dzimbiri si zinapangidwa anasonkhana salt mchere.

Low kuthamanga polyethylene wapeza ntchito mu kachitidwe kuchimbudzi, popeza kugonjetsedwa ndi zinthu mwamakani ndi kutentha.

mipope mpweya amadziwikanso osati kuwonongedwa ndi Musataye katundu ntchito kwa nthawi yaitali.

Kwake - mipope kuposa khalidwe ku HDPE. Iwo ali mantha zosagwira, musati kuvunda ndi kusachita dzimbiri, musati osokoneza mchikakamizo cha mkulu ndi otsika kutentha. moyo utumiki wawo ndi zaka zambirimbiri.

Polyethylene kuthamanga ndi zofewa ndi zotanuka. zinthu wake zimakhalanso ochepa dongosolo la tinthu limene kwenikweni zimakhudza kachulukidwe ake. LDPE kubala osiyanasiyana mafilimu. Iwo ndi apamwamba kwambiri quality, ndi ma CD chuma bwino njira mwina angapezeke. Izo zimasunga amasunga ndi mndandanda wa katundu zabwino ngakhale pa kutentha kwa madigiri sikisite. makhalidwe Mkhalidwe wa polyethylene ndi sasintha atamwa mankhwala. Iye amatha molondola wodzipatula mankhwala kwa chinyezi komanso nthunzi.