Polyurethane foaming tshuab yog cov cuab yeej tshwj xeeb rau kev txhaj tshuaj thiab foaming ntawm polyurethane ua npuas ncauj.Ntev npaum li cov khoom siv polyurethane raw khoom (isocyanate tivthaiv thiab polyether polyol tivthaiv) kev ua tau zoo raws li cov qauv kev cai.Uniform thiab tsim nyog cov khoom ua npuas ncauj tuaj yeem tsim los ntawm polyurethane siab thiab qis tshuab.Nws yog ua los ntawm foamed yas los ntawm cov tshuaj tiv thaiv foaming ntawm polyether polyol thiab polyisocyanate nyob rau hauv lub xub ntiag ntawm ntau yam tshuaj additives xws li foaming agent, catalyst thiab emulsifier.
Kev ceev faj rau kev ua haujlwm ntawmpolyurethane foaming tshuab
1. Covpolyurethane foaming tshuabyuav tsum hnav tsom iav tiv thaiv, khaub ncaws ua haujlwm thiab lub kaus mom ua haujlwm, thiab cov hnab looj tes roj hmab thaum ua haujlwm ntawm cov khoom siv polyurethane A thiab B ua ke.Qhov chaw ua haujlwm yuav tsum muaj qhov cua zoo thiab huv si.Thaum lub ambient kub siab, tus neeg sawv cev foaming nyob rau hauv lub polyurethane A cov ntaub ntawv yuav ib nrab vaporize thiab ua kom lub siab, yog li ntawd lub hau npog yuav tsum tau qhib ua ntej tso cov roj siab, thiab ces lub chim cover yuav tsum tau qhib.
2. Thaum lub tshuab ua npuas ncauj polyurethane muaj cov nplaim hluav taws kub nyhiab rau cov npuas dej, lub tshuab ua npuas ncauj polyurethane tuaj yeem siv cov nplaim hluav taws kub retardant ntxiv.Qhov sib ntxiv ntawm cov nplaim hluav taws kub yog 15-20% ntawm qhov hnyav ntawm cov khoom siv dawb, thiab cov nplaim hluav taws xob ntxiv rau cov khoom siv polyurethane A.Nws yuav tsum tau stirred tusyees ua ntej foaming.
3. Thaum lub sij hawm phau ntawv foaming ua hauj lwm ntawm lub tshuab ua npuas ncauj polyurethane, ua kom hnyav cov ntaub ntawv polyurethane A thiab B sib xyaw ua ke thiab muab tso rau hauv lub thawv tib lub sijhawm.Tom qab stirring rau 8 mus rau 10 vib nas this nrog ib tug stirrer ntawm ntau tshaj 2000 rpm, ncuav rau hauv pwm thiab ua npuas ncauj.Lub sij hawm demoulding nyob ntawm cov khoom xav tau, ua npuas ncauj thickness, thiab lwm yam.
4. Thaum daim tawv nqaij los rau hauv kev sib cuag nrog cov khoom sib xyaw polyurethane A, nws yuav tsum tau ntxuav nrog xab npum thiab dej.Thaum lub tshuab ua npuas ncauj polyurethane ua haujlwm cov khoom siv polyurethane B (muaj qee yam khaus), tsis txhob nqus nws cov pa thiab tsis txhob txaws rau ntawm daim tawv nqaij thiab qhov muag.Thaum nws tuaj txog ntawm daim tawv nqaij thiab qhov muag, nws yuav tsum tau so nrog cov paj rwb kho mob tam sim ntawd, tom qab ntawd yaug nrog dej ntau rau 15 feeb, thiab tom qab ntawd yaug nrog xab npum lossis cawv.
Kev yuav khoom ntawm polyurethane foaming tshuab
1. Nkag siab txog hom foaming tshuab
Lub hauv paus ntsiab lus ntawm polyurethane foaming tshuab yog ua kom paub cov roj rau hauv cov kua dej ntawm tus neeg sawv cev foaming, tab sis ntau hom foaming tshuab qhia roj hauv ntau txoj kev.Piv txwv li, qhov qis-ceev stirring hom cia siab rau qeeb-ceev rotating hniav los qhia cov roj, uas ua rau cov npuas me me thiab tsis muaj foaming efficiency;hom kev kub ceev impeller tso siab rau kev kub ceev tig impeller kom los ntshav, qhov loj ntawm cov npuas tsis tuaj yeem tswj tau, thiab cov npuas dej tsis sib xws;high-pressure thiab nruab nrab-tsawg siab hom tsim ua npuas ncauj Kev kub ceev, kev ua haujlwm siab, zoo ib yam thiab me npuas.
2. Cov yam ntxwv tseem ceeb ntawm polyurethane foaming tshuab:
1) Yield: Yield yog tus nqi ntawm npuas tsim, uas yuav tsum yog me ntsis siab dua li qhov yuav tsum tau ua npuas ncauj los ntawm 20%.Txhawm rau kom tawm hauv chav rau cov khoom ua npuas dej, qhov kev txwv qis yuav tsum tau siv los ua lub hauv paus rau kev suav thiab suav, thiab qhov txwv sab saud siv tsis tau.
2) Lub peev xwm nruab ntawm lub tshuab polyurethane foaming: lub peev xwm ntsia tau yog tag nrho lub zog ntsia.Qhov kev ntsuas no tseem ceeb heev rau kev suav cov adaptability ntawm hluav taws xob Circuit Court rau tag nrho cov hwj huam noj.
3) Qhov loj thiab txoj kab uas hla ntawm polyurethane foaming tshuab.
Post lub sij hawm: Lub Xya hli ntuj-27-2022