Polyethylene waxyog ib hom polyolefin hluavtaws wax, uas feem ntau yog hais txog homopolyethylene nrog cov txheeb ze molecular hnyav tsawg dua 10000. Nyob rau hauv dav dav, ethylene polymers uas tsis muaj zog thiab toughness thiab tsis tuaj yeem ua tiav raws li ib qho khoom siv tuaj yeem hu ua polyethylene wax.Peb waxNws muaj lub siab softening point, tsawg melting viscosity, zoo tshuaj stability, zoo lubrication thiab fluidity.Raws li kev pabcuam kev ua haujlwm, nws tau siv dav hauv cov kav dej PVC, zaj duab xis, cables thiab lwm yam khoom siv yas thiab roj hmab los txhim kho kev ua haujlwm ntawm cov khoom thiab txhim kho cov tsos ntawm cov khoom tiav.

Txoj kev npaj ntawm polyethylene wax
Muaj peb txoj hauv kev tseem ceeb ntawm pe wax.Thawj yog polyethylene cracking txoj kev, uas lov polyethylene resin rau hauv polyethylene wax nrog tsawg molecular hnyav ntawm kub.Qhov thib ob yog txoj kev los ntawm cov khoom lag luam refining, uas sau cov khoom los ntawm cov khoom hnyav molecular uas ua rau hauv cov txheej txheem ntawm ethylene polymerization thiab purifies lawv kom tau polyethylene wax.Qhov thib peb txoj kev yog ethylene synthesis txoj kev, uas ncaj qha synthesizes polyethylene wax nrog ethylene li raw khoom.Hnub no, Sainuo yuav coj koj mus kawm txog polyethylene wax npaj los ntawm kev sib tsoo thiab txoj kev sib txuas.

(1) Kev npaj ntawm polyethylene wax los ntawm pyrolysis
Txoj kev tawg yog txoj hauv kev tseem ceeb ntawm kev tsim cov khoom siv polyethylene hauv Suav teb.High molecular hnyav ntshiab polyethylene los yog pov tseg polyethylene yas yog tawg mus rau hauv polyethylene ciab ntawm kub.Nws cov khoom zoo thiab cov khoom (xws li hardness, melting point thiab pom tseeb xim) yog heev cuam tshuam los ntawm qhov chaw ntawm cracking raw khoom.Txoj kev tawg yooj yim muaj cov cuab yeej siv yooj yim, nplua nuj ntawm cov khoom siv raw thiab cov nqi ua haujlwm qis.Nws tuaj yeem paub txog kev rov siv cov pov tseg polyethylene nrog cov txiaj ntsig zoo nyiaj txiag.Txawm li cas los xij, cov txheej txheem tawg yog qhov nyuaj rau kev tswj, qhov hnyav molecular faib ntawm cov khoom yog dav, qhov zoo ntawm polyethylene wax yog qhov nyuaj rau kev tswj, thiab ntau qhov chaw dub yog tsim.Nws yog nrov nyob rau hauv nruab nrab thiab qis-kawg daim ntaub ntawv xws li xim masterbatch.
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 yuav tsum tau siv zog ntau.Cov neeg los ntawm Beijing University of chemical technology tau kawm txog kev npaj ntawm polyethylene wax los ntawm kev tawg PE resin ntawm qhov kub thiab txias nyob rau hauv ib qho ntsia hlau extruder.Ib lub rhaub yog ntxiv rau ntawm cov yeeb nkab txuas ntawm extruder thiab lub tank txias kom sov thiab tawg cov khoom.Qhov zoo tshaj plaws cracking kub yog 420 ℃, paub qhov nruam zus tau tej cov PE resin los npaj polyethylene wax.Lwm tus tau kawm txog kev npaj ntawm polyethylene wax los ntawm kev tawg pov tseg polyethylene hauv ib qho autoclave nrog al-mcm-48 ua catalyst.Cov tshuaj tiv thaiv kub yog 360 ~ 380 ℃ thiab lub sijhawm tshuaj tiv thaiv yog 4H.Kev siv cov catalyst txo cov tshuaj tiv thaiv kev ua kom lub zog, qhov kub thiab txias yuav tsum tau siv rau pyrolysis thiab lub zog noj.Wang Lulu thiab lwm tus tau txhim kho cov txiaj ntsig ntawm polyethylene siv quav ciab los ntawm hnyav pab pyrolysis ntawm polyethylene pov tseg plastics.Cov kev cuam tshuam ntawm cov kuab tshuaj sib txawv thiab cov tshuaj tiv thaiv ntawm cov txiaj ntsig thiab cov khoom ntawm cov quav ciab tau tshawb xyuas.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.Thaum siv cov xylene sib xyaw ua cov kuab tshuaj, cov txiaj ntsig tau siab txog 87.88%.Cov kuab tshuaj tsw qab kuj tuaj yeem txhim kho cov khoom zoo rau qee yam thiab tau txais lub teeb daj polyethylene wax.

(2) Synthesis ntawm polyethylene ciab
Polyethylene wax synthesized ncaj qha los ntawm ethylene muaj purity siab, me me txheeb ze molecular hnyav tis, nqaim melting ntau, adjustable khoom ua tau zoo thiab ruaj khov zoo.Nws yog siv los tsim cov khoom zoo thiab muaj ntau hom polyethylene wax.Raws li cov txheej txheem polymerization thiab hom catalysts siv, ethylene synthesis tuaj yeem muab faib ua dawb radical polymerization, Ziegler Natta (ZN) catalytic polymerization, metallocene catalytic polymerization thiab lwm yam.
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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