Kev nthuav dav Polystyrene (EPS) yog cov npe kev lag luam feem ntau siv rau cov khoom siv tawv dawb ua los ntawm cov hlaws polystyrene. Nws yog qhov sib, tawv, yas ua npuas insulating khoom tsim los ntawm cov hlaws dai ruaj ntawm polystyrene.
EPS hlaws tau nthuav dav thiab thaum kawg ua puab rau hauv cov EPS loj dua uas yog siv rau cov phab ntsa, ru tsev, pem teb, nkag qhov chaw thiab kos duab kos duab.
Nws muab R- Qhov tseem ceeb rau cov thermal rwb thaiv tsev, hloov tau yooj yim hauv kev tsim qauv, qhov ntev ruaj khov, tiv taus ntawm kev ya raws thiab tiv thaiv lub cev tsis zoo. Nws ua pov thawj kom muaj nuj nqis thiab siv cov khoom tsim ua tsev yooj yim.
EPS nquag siv cov ntawv ua npuas dej. Lo lus "styrofoam" feem ntau yog siv rau kev piav qhia ntawm EPS ua npuas ncauj. Nws yog hom lag luam uas siv cov khoom siv txau no. Cov khoom siv ua npuas ntau siv nyob rau hauv lub neej txhua hnub muaj xws li cov thawv txias, cov dej cawv, cov pwm kawg lub kaus mom thiab pob txha taub hau, ntim ntawm cov thawv thiab txawm tias lub khob siv rau ntau qhov chaw rau dej txias.
Nws yog tsim los ntawm styrene monomer. Nws yog qhov feem ntau raug rho tawm ntawm ethylene thiab benzene thiab raug tsim tawm siv cov txheej txheem polymerization uas ua cov txaj kheej kheej ntawm polystyrene. Txhawm rau pab nthuav tawm cov khoom feem ntau tsis tshua muaj kub npau npau hydrocarbon (pentane gas) ntxiv thaum tab tom ua.
Nws tsim tawm nyob rau hauv peb theem
Ua Ntej Kev Tshawb Fawb-Ntawm kev sib cuag nrog lub zog ua ntej tus neeg sawv cev tam sim no nrog polystyrene hlaws pib rwj thiab hlaws nthuav dav li 40 txog 50 npaug dua li lawv lub qub.
Kev Txias Zog-Tom qab cov txheej txheem nthuav dav hlaws dai ntxiv rau lub sijhawm sib law liag kom thiaj muaj qhov sib luag ntawm qhov kub thiab siab.
Moulding-Tom qab ntawd, cov hlaws dai tau muab tso rau sab hauv pwm thiab rov ua pa nrog chav. Cov txheej txheem ua ntej ua npuas ncauj nthuav dav ntxiv kom tiav tiav cov pwm kab noj hniav thiab fuse ua ke.
Ob txheej txheem molding siv hauv kev tsim EPS
Dub Moulding-Nws yog siv los tsim cov khoom loj ntawm EPS uas tuaj yeem txuas ntxiv tau yooj yim txiav thiab rov kho dua raws li cov neeg siv xav tau. Cov block no tau siv ob qho tib si rau kev ntim khoom thiab kev tsim kho.
Hom Moulding-Nws yog siv los tsim cov khoom uas yuav tsum tau tsim cov kev cai tshwj xeeb. Feem ntau, txoj kev no yog siv rau kev ntim khoom hluav taws xob qhov twg cov qauv pwm EPS siv feem ntau
