Polyethylene wakisi ndeye polyethylene ine yakaderera molecular huremu (<1000), uye inowanzoitika mubatsiri muindasitiri yekugadzira mapurasitiki.Kushandiswa kwepolyethylene wakisi mupurasitiki extrusion molding inogona kuvandudza kuyerera kwezvinhu, kuwedzera kugadzirwa, uye kubvumidza yakakwira mafirita.

Pe waxinoshandiswa zvakanyanya muvara masterbatch processing.Chinangwa chekuwedzera polyethylene wax haisi kungoshandura mashandiro eruvara masterbatch system, asiwo kukurudzira kupararira kwepigment muvara masterbatch.Kupararira kwe pigment kwakakosha kwazvo kune colorbatch, uye kunaka kwemavara masterbatch kunonyanya kuenderana nekupararira kwe pigment.Kupararira kwakanaka kwe pigment, simba repamusoro remavara eruvara masterbatch, kunaka kwemavara emhando yezvigadzirwa, uye mutengo wakaderera.Polyethylene wakisi inogona kuvandudza mwero wekupararira kwe pigment kune imwe nhanho, uye inowanzopararira mukugadzirwa kwemavara masterbatch.Nekuda kwemaitiro akasiyana ekugadzira, polyethylene wakisi inogona kukamurwa kuita mhando mbiri: polymerization mhando uye pyrolysis mhando.Iyo yekutanga ndeye-chigadzirwa che-high-pressure polyethylene polymerization, uye iyo yekupedzisira inoumbwa ne polyethylene thermal cracking.Nekuti polyethylene wakisi ine akasiyana molecular chimiro inogona kukamurwa kuita yakakwirira uye yakaderera density, iyo yakafanana ne polyethylene.Nekuda kwekusiyana kwenzira yekugadzira, density, huremu hwemamorekuru, kugovera huremu hwemamorekuru uye chimiro chemomecular ye polyethylene wax, kushanda kwayo kwemavara masterbatch kwakasiyanawo.

Kugadzirira kwe polyethylene wax ne pyrolysis
Pyrolysis ndiyo nzira huru yekugadzira polyethylene wakisi muChina.Iyo yakakwira molecular huremu yakachena polyethylene kana tsvina polyethylene purasitiki inoiswa pyrolysed kuita polyethylene wakisi pakupisa kwepamusoro.Hunhu hwayo hwechigadzirwa uye zvivakwa (zvakadai sekuoma, kunyungudika, ruvara rwunooneka, nezvimwewo) zvinokanganiswa zvakanyanya nekwakabva kutsemuka mbishi zvinhu.Maitiro epyrolysis ari nyore, kunobva zvigadzirwa zvakapfuma, uye mutengo wekushandisa wakaderera.Inogona kuona kushandiswazve kwemarara polyethylene, ine zvakanaka zvehupfumi.

Izvo zviripo zvekupwanya maitiro anosanganisira kupisa kwemafuta, kuputika-kubatsirwa nesolvent uye catalytic cracking.Pakati pavo, kupisa kwemafuta ndiko kuri nyore.Polyethylene wakisi zvigadzirwa zvinogona kugadzirwa nekudzora kuita tembiricha uye nguva, asi zvinoda simba rekushandisa.

Xue Ping nevamwe vanobva kuBeijing University yeChemical Technology vakaita tsvakiridzo yekugadzirwa kwepolyethylene wax nepyrolysis yePE resin pakupisa kwakanyanya mune imwe-screw extruder.Hita yakawedzerwa papombi yekubatanidza pakati peextruder netangi yekutonhodza kupisa zvinhu zvirimo, uye tembiricha yekutsemuka yakanakisa yaive 420 ℃, ichiziva kuenderera mberi kwekugadzirwa kwepolyethylene wax nepyrolysis yePE resin.

Zhang Jianyu nevamwe vakadzidza vachishandisa Al-MCM-48 secatalyst yekukonzeresa kuparara kwemarara polyethylene kugadzirira polyethylene wax mu autoclave, ine reaction tembiricha ye360 ~ 380 ℃ uye reaction nguva ye4 h.Iko kushandiswa kwecatalyst kunoderedza kuita activation simba, tembiricha inodiwa pakupwanya uye kushandiswa kwesimba.Wang Lulu nevamwe vakavandudza goho re polyethylene wax ne solvent-assisted pyrolysis ye polyethylene tsvina mapurasitiki, uye vakaongorora migumisiro yezvakasiyana-siyana zvinonyungudutsa uye maitiro ekuita pagoho nekushanda kwezvigadzirwa zvewakisi.Muedzo unoratidza kuti goho repolyethylene wakisi rinogona kuvandudzwa nekushandisa zvinonyungudutsa zvinonhuhwirira, uye goho rinogona kusvika pa87.88% kana uchishandisa xylene yakasanganiswa se solvent.Zvinonhuhwirira zvinonyungudutsa zvinogonawo kuvandudza mhando yechigadzirwa kusvika kumwero wakati, uye yakareruka yero polyethylene wax inogona kuwanikwa.
Qingdao Sainuo Chemical Co., Ltd.Isu tiri kugadzira PE wakisi, PP wax, OPE wax, EVA wax, PEMA, EBS, Zinc/Calcium Stearate….Zvigadzirwa zvedu zvakapfuura REACH, ROHS, PAHS, FDA yekuongorora.
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