Kev pom dav dav ntawm yas masterbatch
Yas masterbatchtuaj yeem pom zoo li polymersmasterbatch.Polymers tuaj yeem tsim los ntawm ntau hom 'mers' uas sawv cev rau cov tshuaj lom neeg.Feem ntau cov tshuaj yog los ntawm cov roj los yog lwm yam hydrocarbons.Hydrocarbons zoo li lawv tshwm sim, ua los ntawm hydrogen thiab carbon.Yog li, cov yas yog tsim los ntawm (feem ntau) hydrogen thiab carbon uas tau sib sau ua ke los ua mers (xws li ethylene lossis propylene) thiab tom qab ntawd cov mers txuas mus rau cov saw hlau thiab thaum cov chains ntev txaus los ua 'poly' feem ntau thaum tsawg kawg. 100 ntawm mers tau txuas ua ke, peb tau txais cov khoom siv yas / polymeric.
Yas masterbatchyog ntawm tsev neeg thermoplastic yog tsim los ntawm cov saw ntev molecules uas muaj cov carbon thiab hydrogen hu ua polymers.Lo lus ua ke "poly" xa mus rau ntau thiab "mer" xa mus rau ib tus neeg molecular rov ua haujlwm uas tau txuas ua ke.Lub mer Cheebtsam ntawm ntau hom yas, lub zog ntawm cov molecular bonds uas tuav cov mers rau ib leeg thiab qhov ntev ntawm cov saw hlau polymer yog thawj txiav txim siab ntawm cov khoom yas.Qee cov plastics hloov ntau dua ib hom mer units.
Cov yasmasterbatchntawm tsev neeg thermoset thaum zoo ib yam li cov uas tau piav saum toj no muaj qhov sib txawv ntawm kev sib txuas ntawm mers nrog rau cov kev sib txuas sib txuas uas muab cov khoom sib txawv xws li tuaj yeem muaj peev xwm kub thiab tsis muaj peev xwm yaj ua ntej decomposing raws li qhov kub thiab txias.
Txhaum cov yas masterbatch
Ntau ntauyas masterbatchyog tawg nyob rau hauv crackers!
Chav crackers nyob rau hauv lub ntsiab.Tab sis tsis yog tshwj xeeb.
Muaj ntau pawg ntawm cov thermoplastics uas tau los ntawm cov khoom siv raw hu ua ethylene.Thiab ethylene yog tsim nyob rau hauv ntau txoj kev, feem ntau yog los ntawm cov roj los yog roj feedstock.
Ib txoj hauv kev nrov heev yog muab cov khoom noj rau hauv chav ua noj thiab cov txiaj ntsig ethylene, ntxiv rau qee yam khoom thiab.Tom qab ntawd cov ethylene yog polymerized rau hauv polyethylene los yog polypropylene feem ntau tab sis tsis tsuas yog.PVC, PS, PET, butadiene kuj tau ua.
Ntawm no yog ib qho excerpt los ntawm ib tsab xov xwm piav qhia tiasyas masterbatchzoo dua:
"Ethylene yog qhov pib ntawm plaub yam khoom kawg uas paub tab: polyethylene (peb hom: LDPE, LLDPE, thiab HDPE), ethylene oxide, ethylene dichloride (tus ua ntej rau vinyl chloride monomer), thiab ethylbenzene (lub precursor rau styrene).Cov khoom me me, cov khoom tshwj xeeb muaj xws li linear α-olefins, vinyl acetate monomer, thiab hluavtaws ethanol, thiab lwm yam. "
Hauv qab no yog cov npe ntawm qee qhov nrov ethylenemasterbatchcov khoom:
| PVA Poly (vinyl acetate), poly (vinyl cawv) | PET Poly (ethylene terephthalate) |
| PVC Poly (vinyl chloride) | PS Polystyrene |
| LLDPE Linear low-density polyethylene | PEG Poly (ethylene glycol) |
| LDPE Tsawg-density polyethylene | HDPE High-density polyethylene |
Txog tam sim no txoj kev tsim khoom lag luam tseem ceeb tshaj plaws rau ethylene yog chav tawg gaseous feedstocks (ethane, propane, los yog butane) los yog kua feedstocks (naphtha los yog roj roj).Ntawm qhov kub siab heev uas los ntawm 850 Celsius degree lossis ntau dua, cov txheej txheem ntawm cov tshuab ua haujlwm tsis yog-catalytic tawg tau khiav.Ethylene yog cov khoom npaj;tab sis lwm yam tseem ceeb hauv tsev-thaiv molecules, xws li propylene, butadiene, thiab benzene, yog sib koom ua ke.
Cov txiaj ntsig ntawm txhua tus coproduct feem ntau yog kev ua haujlwm ntawm cov khoom noj siv.Cracking ethane muab yuav luag tsis muaj coproducts;tab sis tawg naphtha muab ntau npaum li cas ntawm propylene, butadiene, thiab benzene.Raws li pom nyob rau hauv lub ntiaj teb no, lub steaming cracking yuav pom raws li ib tug ntawm cov tseem ceeb tshaj plaws kev pab cuam ntawm butadiene, propylene thiab subordinate ua cov peev txheej ntawm benzene.Cov duab hauv qab no qhia txog cov schematic ntawm cov txheej txheem ntawm kev siv tshuab ua kom tawg tawg hauv txoj kev yooj yim tshaj plaws.
Post lub sij hawm: Apr-07-2022