styrene siv nyob rau hauv polymers

Styrene yog ib qho ntshiab organic kua hydrocarbon uas yog tsim los ntawm cov khoom siv roj av tom qab cov txheej txheem ntawm fractional distillation kom rho tawm cov olefins thiab aromatics tsim nyog rau cov khoom siv tshuaj los tsim Styrene.Feem ntau cov nroj tsuag tshuaj petrochemical zoo ib yam li daim duab ntawm sab xis.Pom cov kab ntsug loj uas hu ua fractional distillation kem.Qhov no yog qhov chaw ntawm cov roj av tau rhuab mus rau qhov kub thiab txias vim hais tias txhua yam ntawm cov tshuaj tseem ceeb muaj cov ntsiab lus kub sib txawv yog li cais lawv kom raug.

Styrene yog dab tsi paub nyob rau hauv chemistry voj voog raws li ib tug monomer.Cov tshuaj tiv thaiv ntawm monomers tsim "chains" thiab muaj peev xwm txuas nrog lwm cov molecules yog qhov tseem ceeb hauv kev tsim cov Polystyrene.Styrene molecules kuj muaj ib pawg vinyl (ethenyl) uas qhia cov electrons hauv cov tshuaj tiv thaiv hu ua covalent bonding, qhov no tso cai rau nws los tsim cov yas.Feem ntau, Styrene yog tsim nyob rau hauv ob kauj ruam txheej txheem.Ua ntej, alkylation ntawm benzene (ib qho tsis muaj hydrocarbon) nrog ethylene los tsim ethylbenzene.Aluminium chloride catalyzed alkylation tseem siv nyob rau hauv ntau EB (ethylbenzene) nroj tsuag thoob ntiaj teb.Thaum ua tiav, EB tau muab tso rau los ntawm cov txheej txheem dehydrogenation meej heev los ntawm kev dhau EB thiab ua kom lub zog ntawm cov khoom siv xws li hlau oxide, aluminium chloride, lossis tsis ntev los no, lub txaj ruaj khov zeolite catalyst kom tau txais daim ntawv ntshiab ntawm Styrene.Yuav luag tag nrho cov ethylbenzene uas tsim nyob ib ncig ntawm lub ntiaj teb no yog siv rau styrene manufacturing.Kev nce qib tsis ntev los no hauv Styrene ntau lawm tau nce txoj hauv kev uas Styrene tuaj yeem tsim tau.Ib txoj hauv kev tshwj xeeb yog siv Toluene thiab Methanol hloov EB.Muaj peev xwm siv cov khoom noj sib txawv ua rau Styrene muaj peev xwm muaj peev xwm sib tw.

Petroleum Refining - luv thiab qab zib

• Cov roj crude yog rhuab thiab tig mus rau hauv vapor.
• Qhov kub vapor nce mus rau sab fractionating.
• Kem yog kub rau hauv qab thiab tau txias rau saum.
• Raws li txhua qhov hydrocarbon vapor nce thiab txias rau nws qhov kub kub nws condenses thiab tsim cov kua.
• Cov kua feem ntau (paub pawg ntawm hydrocarbons nrog cov ntsiab lus kub zoo sib xws) raug kaw rau hauv cov tais thiab raug xa mus

Styrene kuj yog ib qho tseem ceeb monomer hauv cov Polymers:

• Polystyrene
• EPS (Expandable Polystyrene)
• SAN (Styrene Acrylonitrile Resins)
• SB LAB
• ABS (Acrylonitrile Butadiene Styrene Resins)
• SB Rubber (Styrene-butadiene txij thaum 1940's)
• Thermoplastic Elastomers (thermoplastic roj hmab)
• MBS (Methacrylate Butadiene Styrene Resins)