PU cushion ua npuas ncauj tshuab nyob rau hauv cov txheej txheem ntawm foaming, npuas vau, khoom tsis txaus, thiab hais txog. Txawm li cas los xij, cov teeb meem no tuaj yeem zam tau zoo los ntawm kev ua kom zoo ntawm cov khoom siv raw, cov txheej txheem tsis zoo thiab tsim pwm. Kev tsom xam tshwj xeeb thiab kev daws teeb meem yog raws li hauv qab no:
I. Cov teeb meem npuas
Yog vim li cas
Raw khoom system: Tus neeg sawv cev foaming tsis tag nrho decomposed los yog siv ntau ntau, ua rau cov roj seem. viscosity txawv txav ntawm cov khoom siv raw (xws li kev txav mus los tsis zoo vim qhov ntsuas kub qis) lossis kev sib kis (xws li kev sib xyaw ntawm cov dej noo thiab impurities).
Cov txheej txheem tsis txaus: nchuav tsis txaus, tsis sib npaug (xws li qias neeg lub taub hau los yog txhaws lub valve), hloov pauv qhov kub thiab txias (xws li evaporation ceev ntawm foaming tus neeg sawv cev vim lub caij ntuj sov sov).
Pwm tsim: lub qhov cua yog thaiv los yog tsis tsim nyog txoj hauj lwm, roj tsis tuaj yeem raug ntiab tawm, tsim ib 'lub hnab cua'.
Kev daws teeb meem
Cov khoom siv raw tswj
Kho tus nqi ntawm lub tshuab tshuab kom paub meej tias qhov decomposition kub thiab lub sijhawm ua tau raws li cov txheej txheem yuav tsum tau ua.
Thaum khaws cia cov ntaub ntawv raw, tswj qhov kub thiab txias (yog tias tsis qis dua 15 degrees Celsius) kom tsis txhob muaj viscosity ntau dhau. Xyuas cov ntaub ntawv raw kom tas sij hawm los yog kis kab mob ua ntej siv.
Txheej txheem optimization
Calibration lub metering twj tso kua mis los xyuas kom meej qhov tseeb ntawm pouring kom muaj nuj nqis; ib txwm ntxuav ntawm nplawm lub taub hau kom ntseeg tau tias sib xyaw ntawm cov khoom xyaw.
Khaws ambient kub kom ruaj khov (xws li . 20-25℃rau cov khoom, 25-30℃rau pwm kub) kom tsis txhob ntxov ntxov evaporation ntawm tshuab tshuab.
Kev txhim kho pwm
Ntxuav cov vents kom ntseeg tau tias cov pa paug zoo. Ua kom zoo tshaj qhov tso tawm qhov tso tawm, tshwj xeeb tshaj yog los ntawm kev ntxiv cov ntsiab lus tso pa tawm hauv cov chaw kaw xws li sab nraub qaum.
II. Teeb meem npuas Collapse
Yog vim li cas
Cov gelation thiab foaming cov tshuaj tiv thaiv tsis sib npaug: ntau dhau gel catalyst tuaj yeem ua rau ua kom ntxov ntxov ua npuas ncauj, thiab lub cell phab ntsa toughness yog heev resilient qhib. Los yog ntau dhau foaming catalyst ua rau cov roj tsim sai heev, ua rau cov phab ntsa membrane tawg.
Ua npuas ncauj stabilizer tsis txaus: Tsis muaj cell stability thiab qhib lub hlwb ua ntej ua npuas ncauj.
Pwm sealing tsis zoo: Cov khoom xau ua rau tsis txaus foaming ntom, uas ua rau foaming vau thaum cog lus.
Kev daws teeb meem
Kev hloov kho catalyst
Ntsuas cov gel catalysts (xws li organotin) thiab foaming catalysts (xws li amine) kom paub tseeb tias cov gel thiab foaming tshwm sim yog synchronized. Piv txwv li, qhov pore kaw tus nqi tuaj yeem txo los ntawm kev txo qis ntawm cov gel catalyst, lossis cov roj tsim hluav taws xob tuaj yeem tswj tau los ntawm kev ua kom cov foaming catalyst.
Stabilizer optimization
Siv ib qho me me ntawm silicone ua npuas ncauj stabilizer kom ruaj khov ntawm tes qhib tom qab ua npuas dej.
Pwm tu
Txheeb xyuas qhov kev ua tau zoo ntawm cov pwm, kho cov npuas dej lossis cov quav ciab uas tseem tshuav rau ntawm qhov chaw molded los tiv thaiv cov khoom to.
III. tsis txaus cov khoom siv
Yog vim li cas
Cov khoom siv tsis txaus: cov khoom siv hauv qab qhov tseem ceeb (piv txwv li "lub hom phiaj ntom x kab noj hniav") lossis ua npuas dej hauv qab tus nqi tsim (xws li tsawg dua 3 feem ntawm cov dej ntxiv rau tag nrho -dej foaming system).
Pwm tsim tsis xws luag: qhov nqaim dhau channel, lub kaum sab xis lossis qhov muag tsis pom qhov tob dhau, cuam tshuam cov khoom siv raw.
Tsis txaus clamping quab yuam: pwm hom nto yog thawb qhib, cov ntaub ntawv raw khoom dhau.
Kev daws teeb meem
Raw khoom ratio
Xam qhov tseeb qhov ntom ntawm cov khoom thiab sib piv nrog tus nqi tsim; npaj cov qauv ua npuas ncauj dawb thiab saib xyuas yog tias qhov ua npuas ncauj qhov siab yog raws li tus qauv.
Xyuas kom meej qhov ua tau zoo ntawm cov neeg ua npuas dej, xws li ntxiv dej txaus rau tag nrho -dej foaming system.
Kev txhim kho pwm
Optimize flow channel thiab ntws lub kaum sab xis tsim, txo cov dej tsis kam, tsis txhob sib sib zog nqus qhov muag tsis pom los yog nce qhov tso pa tawm.
Ua kom clamping quab yuam kom tiv thaiv pwm sib cais- nto nto.
Kev kho cov txheej txheem
Tshawb xyuas cov dej xau ntawm lub ntsuas ntsuas lub twj tso kua mis thiab tsis tshua muaj siab circulating valve kom paub tseeb tias qhov tseeb ntawm cov dej ntau.
IV. Integrated kev tshawb nrhiav logic
Cov Txheej Txheem Ceev Ceev (hauv 1 teev)
Txheeb xyuas qhov hnyav ntawm cov khoom siv raw, nchuav kom muaj nuj nqis, cov vents raug thaiv.
Txheej txheej txheej txheej
Kho qhov ntsuas kub (cov khoom kub, pwm kub) thiab cov tshuab catalytic (xws li ua kom cov foaming catalyst A-1 thiab txo cov gel catalyst siv).
Cov cuab yeej siv thiab kho pwm
Ntxuav pwm hom nto, daws qhov teeb meem sealing, xyuas pwm puag thiab taug qab kev ruaj ntseg, tiv thaiv cov neeg kho tshuab kev co kom ua pwm hloov.