Polyethylene wax yog polyethylene uas tsis muaj qhov hnyav molecular (<1000), thiab yog ib qho kev pabcuam hauv kev lag luam yas.Kev siv polyethylene wax nyob rau hauv cov yas extrusion molding tuaj yeem txhim kho cov ntaub ntawv fluidity, nce ntau lawm, thiab tso cai rau cov neeg muab tub lim ntau dua.

Peb waxyog dav siv nyob rau hauv cov xim masterbatch ua.Lub hom phiaj ntawm kev ntxiv polyethylene wax tsis yog tsuas yog los hloov cov kev ua tau zoo ntawm cov xim masterbatch, tab sis kuj txhawb cov dispersion ntawm pigments hauv xim masterbatch.Lub dispersion ntawm cov xim yog qhov tseem ceeb heev rau xim masterbatch, thiab qhov zoo ntawm cov xim masterbatch feem ntau yog nyob ntawm dispersion ntawm pigment.Zoo dispersion ntawm pigments, siab xim lub zog ntawm cov xim masterbatch, xim zoo ntawm cov khoom, thiab tus nqi qis.Polyethylene wax tuaj yeem txhim kho qhov sib txawv ntawm cov xim rau qee yam, thiab yog ib qho kev sib txawv hauv kev tsim cov xim masterbatch.Vim muaj ntau txoj kev tsim khoom, polyethylene wax tuaj yeem muab faib ua ob hom: hom polymerization thiab pyrolysis hom.Lub qub yog ib yam khoom los ntawm high-pressure polyethylene polymerization, thiab tom kawg yog tsim los ntawm polyethylene thermal cracking.Vim tias polyethylene wax nrog cov qauv molecular sib txawv tuaj yeem muab faib ua qhov siab thiab qis, uas zoo ib yam li polyethylene.Vim qhov sib txawv ntawm kev tsim qauv, qhov ntom ntom, qhov hnyav molecular, qhov hnyav molecular faib thiab cov qauv molecular ntawm polyethylene wax, nws daim ntawv thov kev ua tau zoo hauv cov xim masterbatch kuj txawv.

Kev npaj ntawm polyethylene wax los ntawm pyrolysis
Pyrolysis yog txoj hauv kev tseem ceeb ntawm kev tsim cov khoom siv polyethylene hauv Suav teb.Lub siab molecular hnyav ntshiab polyethylene los yog pov tseg polyethylene yas yog pyrolysed rau hauv polyethylene wax ntawm kub.Nws cov khoom zoo thiab cov khoom (xws li hardness, melting point, pom xim, thiab lwm yam) cuam tshuam zoo heev los ntawm cov khoom siv raw khoom tawg.Cov txheej txheem ntawm pyrolysis yog qhov yooj yim, qhov chaw ntawm cov ntaub ntawv raw yog nplua nuj, thiab cov nqi khiav lag luam tsawg.Nws tuaj yeem paub txog kev rov siv cov khoom pov tseg polyethylene, nrog cov txiaj ntsig zoo nyiaj txiag.

Cov txheej txheem cracking uas twb muaj lawm muaj xws li thermal cracking, hnyav-pab cracking thiab catalytic cracking.Ntawm lawv, thermal cracking yog qhov yooj yim tshaj plaws.Polyethylene wax khoom tuaj yeem npaj los ntawm kev tswj cov tshuaj tiv thaiv kub thiab lub sijhawm, tab sis nws yuav tsum tau siv zog ntau.

Xue Ping thiab lwm tus los ntawm Beijing University of Chemical Technology tau ua cov kev tshawb fawb txog kev npaj ntawm polyethylene wax los ntawm pyrolysis ntawm PE resin ntawm qhov kub thiab txias hauv ib leeg-ntsia hlau extruder.Lub tshuab rhaub tau ntxiv rau ntawm cov yeeb nkab txuas ntawm extruder thiab lub tank txias kom sov cov khoom hauv nws, thiab qhov zoo tshaj plaws tawg kub yog 420 ℃, paub txog qhov nruam zus ntawm polyethylene wax los ntawm pyrolysis ntawm PE resin.

Zhang Jianyu thiab lwm tus tau kawm siv Al-MCM-48 ua catalyst rau catalyze decomposition ntawm pov tseg polyethylene los npaj polyethylene wax nyob rau hauv autoclave, nrog cov tshuaj tiv thaiv kub ntawm 360 ~ 380 ℃ thiab cov tshuaj tiv thaiv lub sij hawm ntawm 4 h.Kev siv cov catalyst txo cov tshuaj tiv thaiv ua kom lub zog, qhov kub thiab txias yuav tsum tau tawg thiab siv zog.Wang Lulu thiab lwm tus tau txhim kho cov txiaj ntsig ntawm polyethylene wax los ntawm hnyav-pab pyrolysis ntawm polyethylene pov tseg plastics, thiab tshawb xyuas qhov cuam tshuam ntawm cov kuab tshuaj sib txawv thiab cov tshuaj tiv thaiv ntawm cov txiaj ntsig thiab kev ua haujlwm ntawm cov khoom siv quav ciab.Qhov kev sim qhia tau hais tias cov txiaj ntsig ntawm polyethylene wax tuaj yeem txhim kho los ntawm kev siv cov kuab tshuaj tsw qab, thiab cov txiaj ntsig tuaj yeem ncav cuag 87.88% thaum siv cov xylene sib xyaw ua cov kuab tshuaj.Cov kuab tshuaj tsw qab kuj tuaj yeem txhim kho cov khoom zoo rau qee qhov, thiab lub teeb daj polyethylene tuaj yeem tau txais.
Qingdao Sainuo Chemical Co., Ltd.Peb yog cov chaw tsim khoom rau PE ciab, PP ciab, OPE ciab, EVA ciab, PEMA, EBS, Zinc / Calcium Stearate ....Peb cov khoom tau dhau REACH, ROHS, PAHS, FDA kuaj.
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