Kev tsim cov txheej txheem ntawm Expandable Polystyrene (EPS)
Expandable Polystyrene (EPS) yog cov khoom siv ntau yam siv dav hauv ntau lub lag luam vim nws lub teeb yuag, insulating, thiab cushioning zog. Nws cov khoom tsim muaj ob peb kauj ruam, los ntawm kev npaj cov khoom siv raw mus rau molding cov khoom kawg. Wb delve rau hauv cov txheej txheem intricate ntawm yuav ua li cas EPS yog tsim.
Raw Khoom Npaj:Lub ntsiab raw khoom rau EPS yog styrene, hydrocarbon muab los ntawm roj av. Thaum pib, styrene monomer tau dhau los ua cov txheej txheem hu ua polymerization, qhov twg nws hloov mus ua polystyrene resin. Cov resin no ces sib xyaw nrog ib qho me me ntawm cov tshuab tshuab, feem ntau yog hydrocarbon xws li pentane, uas ua rau nthuav dav ntawm cov khoom thaum lub sijhawm tsim khoom.
Kev nthuav dav ua ntej:Cov theem ua ntej nthuav dav suav nrog cua sov cov hlaws polystyrene uas muaj tus neeg sawv cev tshuab hauv lub nkoj uas muaj cov pa, hu ua pre-expander. Lub tshav kub ua rau lub tshuab nqus tsev vaporize thiab nthuav, tsim me me, kaw-cell ua npuas ncauj hlaws. Cov txheej txheem nthuav dav yog ua tib zoo tswj kom ua tiav qhov xav tau ceev thiab qhov loj me me rau cov ntawv thov tshwj xeeb ntawm EPS.
Kev loj hlob:Tom qab kev nthuav dav ua ntej, cov hlaws nthuav dav yog sab laug kom paub tab rau lub sijhawm. Thaum lub sij hawm no maturation theem, cov hlaws nthuav dav txias thiab stabilize, tso cai rau lawv kom ua tiav qhov ntom ntom thiab loj. Cov kauj ruam no yog qhov tseem ceeb rau kev ua kom muaj kev sib luag hauv cov khoom kawg ntawm cov khoom.
Kev laus thiab ziab:Cov hlaws matured undergo ntxiv ziab kom tshem tawm cov dej seem seem. Cov kauj ruam no yog qhov tseem ceeb los tiv thaiv qhov tsis xws luag hauv cov khoom kawg thiab ua kom pom kev ua haujlwm zoo. Cov hlaws yog feem ntau tumbled nyob rau hauv ib lub nruas rotating los yog raug cua kub kom qhuav kom ua tiav cov ntsiab lus noo noo xav tau.
Moulding:Cov hlaws qhuav thiab muaj hnub nyoog yog tom qab ntawd molded rau hauv cov duab uas xav tau siv pwm los yog cov ntawv. Cov txheej txheem molding no tuaj yeem ua tau siv ntau yam txuj ci xws li thaiv molding, puab molding, los yog kev cai molding, nyob ntawm seb cov kev cai tshwj xeeb ntawm daim ntawv thov. Hauv block molding, cov hlaws nthuav dav tau muab tso rau hauv pwm thiab chav txhaj tshuaj, ua rau lawv nthuav thiab fuse ua ke los tsim cov blocks loj. Puab molding koom nrog siv cov pwm ua ntej txiav los tsim cov khoom EPS nrog cov duab tshwj xeeb thiab cov duab.
Txias thiab txiav:Thaum molded, cov khoom EPS raug tso cai kom txias thiab khov rau hauv cov pwm. Tom qab txias, cov khoom molded raug tshem tawm ntawm cov pwm thiab txiav los yog txiav mus rau qhov ntev uas yuav tsum tau siv cov cuab yeej txiav tshuab. Cov kauj ruam no ua kom qhov tseeb thiab sib xws hauv cov khoom kawg qhov loj thiab cov duab.
Cov txheej txheem ntxiv (yeem):Nyob ntawm daim ntawv thov npaj, cov khoom lag luam EPS molded tuaj yeem ua cov txheej txheem ntxiv xws li kev ua tiav, lamination, lossis txheej. Cov txheej txheem no txhim khu kev ua tau zoo, durability, thiab zoo nkauj ntawm cov khoom kawg, ua rau lawv haum rau ntau yam kev siv.
Kev Tswj Xyuas Zoo:Thoob plaws hauv cov txheej txheem tsim khoom, cov kev tswj xyuas nruj nruj tau siv los xyuas kom meej tias cov khoom EPS ua tau raws li cov qauv thiab cov kev qhia tshwj xeeb. Kev kuaj xyuas zoo yuav suav nrog kev tshuaj xyuas qhov loj me, ntsuas qhov ntom ntom, ntsuas cov cuab yeej siv tshuab, thiab tshuaj xyuas qhov muag txhawm rau txheeb xyuas qhov teeb meem lossis qhov tsis zoo.
Kev tsim cov polystyrene nthuav dav (EPS) feem ntau yuav tsum muaj cov organic peroxides ua cov khoom ua npuas dej. Organic peroxides ua raws li catalysts thaum lub sij hawm EPS ntau lawm txheej txheem, txhawb lub decomposition ntawm cov polymer los tsim roj, yog li ua tiav cov khoom foaming. Feem ntau siv cov organic peroxides muaj xws li:
Benzoyl Peroxide (Ntxiv piv yog 0.5% rau 4%)
tert-Butyl Perbenzoate (Ntxiv piv yog 0.2% rau 0.5%)
Cov peroxides no tau ntxiv rau polystyrene resin thaum lub sij hawm EPS ntau lawm thiab raug ntxias kom decompose los ntawm tshav kub los yog lwm yam txhais tau tias, ua rau cov roj tsim thiab EPS expansion thiab foaming.
Hauv kev xaus, kev tsim khoom ntawm Expandable Polystyrene (EPS) yog txheej txheem ntau kauj ruam uas koom nrog kev ua tib zoo tswj cov khoom siv raw thiab kev tswj xyuas meej ntawm ntau yam tsis ua tiav kom ua tiav cov khoom xav tau hauv cov khoom kawg. Los ntawm kev npaj cov khoom siv raw mus rau molding thiab ua tiav, txhua kauj ruam ua lub luag haujlwm tseem ceeb hauv kev tsim cov khoom zoo EPS raws li kev xav tau ntawm kev lag luam thoob ntiaj teb.https://www.kz-opchem.com/organic-peroxides/dibenzoyl-peroxide.html