KraussMaffei expandable graphite dosing thev naus laus zis tso cai rau cov khoom siv los ua hluav taws kub retardant, hloov lossis ntxiv rau cov kua sib tov.
Cov kev xav tau rau kev tiv thaiv hluav taws ntawm polyurethane ua npuas ncauj qhov chaw yog nce thoob ntiaj teb, ob qho tib si hauv tsheb thiab kev lag luam, nrog rau cov kev cai tswj hwm. Txhawm rau ua kom tau raws li qhov xav tau no, KraussMaffei (Munich, Lub Tebchaws Yelemees) tshaj tawm tias nws yuav nthuav tawm cov txheej txheem ua tiav rau kev ua haujlwm siab ntawm kev nthuav dav graphite kom ua tiav cov khoom siv siab thiab cov txheej txheem ua haujlwm zoo, thiab Lub Tsev Haujlwm Saib Xyuas Kev Ua Haujlwm yuav muaj nyob rau hauv Düsseldorf, Lub Tebchaws Yelemees txij lub Kaum Hli 16 txog rau 2017 xyoo. 19th ib.
"Expandable graphite yog ib tug nqi-zoo muab tub lim uas muaj qhov zoo meej rau ntau daim ntawv thov automation," piav qhia Nicholas Bale, Thawj Tswj Hwm ntawm Cov Khoom Siv Hluav Taws Xob ntawm KraussMaffei. "Hmoov tsis zoo, cov khoom no yog rhiab heev rau txhua yam kev ntxhov siab thaum ua haujlwm."
KraussMaffei tus tshiab tsim high-pressure mixing taub hau nrog low-pressure bypass thiab ib tug tshwj xeeb pre-mixing chaw nres tsheb rau dosing expanding graphite ua rau nws ib tug tshwj xeeb zoo lwm txoj los yog ntxiv rau cov kua additives raws li ib tug hluav taws kub retardant. Tag nrho cov txheej txheem automated chains txo cov sij hawm lub voj voog thiab ua kom tag nrho cov kev ua haujlwm zoo.
KraussMaffei thov hais tias cov txiaj ntsig ntawm kev kub siab tiv thaiv kev txhaj tshuaj sib xyaw rau kev ua haujlwm siab ntawm cov tshuab polyurethane ua npuas ncauj tuaj yeem siv rau hauv cov ntawv thov uas nthuav dav graphite siv los ua cov muab tub lim. Qhov no tau tshaj tawm ua lub hauv paus rau kev txo lub sij hawm voj voog thiab ua kom cov khoom ua tau zoo. Hauv cov txheej txheem no, tsis zoo li kev ua haujlwm siab, kev ntxuav tus kheej lub taub hau yog hais kom tshem tawm qhov yuav tsum tau yaug dej tom qab txhua qhov kev txhaj tshuaj. KraussMaffei hais tias qhov no txuag cov ntaub ntawv thiab lub sijhawm tsim khoom thiab pab tswj cov khoom lag luam zoo ib yam, thaum tseem tshem tawm cov nqi ntawm kev muab thiab pov tseg cov ntaub ntawv pov tseg. Kev sib xyaw ua ke siab dua kuj ua kom muaj zog sib xyaw ntau dua. Qhov no tuaj yeem siv los txo lub sijhawm voj voog.
Cov tshuab no yog raws li tshwj xeeb expandable graphite mixing hau. Lub taub hau tshiab yog ua raws li KraussMaffei high-pressure mixing head. Lub kaw lus tau nruab nrog lub tshuab hluav taws xob qis qis ntawm kev nce ntu ntu thiab yog tsim los ua cov graphite nthuav dav. Yog li ntawd, cov neeg kho tshuab kev nyuaj siab exerted rau ntawm expanding graphite hais nruab nrab ntawm lub voj voog ntawm successive cycles ntawm them polyol yog minimized. Tsuas yog ua ntej pouring pib, cov khoom circulates los ntawm lub nozzle, tsim siab. Yog li ntawd, tus muab tub lim yog raug rau qhov tsawg kawg nkaus mechanical kev nyuaj siab. Nrog rau cov thev naus laus zis no, cov qib siab filling tuaj yeem ua tau, nyob ntawm qhov yuav tsum tau ua thiab cov khoom siv raw, mus txog ntau dua 30% los ntawm qhov hnyav ntawm polymer. Yog li, nws tuaj yeem ncav cuag qib siab ntawm hluav taws kub UL94-V0.
Raws li KraussMaffei, sib tov ntawm polyol thiab nthuav graphite yog npaj nyob rau hauv ib tug tshwj xeeb pre-mixing chaw nres tsheb. Cov tshuab tshwj xeeb sib npaug sib xyaw ua ke nrog cov khoom xyaw ua kua. Qhov no yog ua nyob rau hauv ib tug maj mam, yog li tswj cov qauv thiab loj ntawm expandable graphite hais. Dosing yog automated thiab polyol hnyav tuaj yeem nce mus txog 80%, kom ntseeg tau tias zoo ib yam. Tsis tas li ntawd, kev tsim khoom ua kom huv thiab ua haujlwm zoo dua li kev tuav tuav, hnyav thiab txhaws cov kauj ruam raug tshem tawm.
Thaum lub sij hawm premixing txheej txheem, qhov sib tov piv ntawm expanding graphite thiab lwm yam khoom yuav siv tau los optimize qhov hnyav thiab ntim ntawm cov khoom yam tsis muaj kev cuam tshuam cov hluav taws kub retardant zog.
Post lub sij hawm: Oct-09-2023