Polyurethane txau yog cov khoom siv siab siab polyurethane txau.Yog vim li cas cov khoom ntawm lubhigh-pressure sprayer khoomyog slammed rau hauv ib lub me me sib tov chamber thiab spun vigorously ntawm kev kub ceev, sib tov yog zoo heev.Cov khoom txav ntawm kev kub ceev ua cov pos huab zoo ntawm lub nozzle ntawm lubrab phomthiab txau lawv tusyees ntawm qhov chaw ntawm qhov khoom.Foamed polyurethane txau yog tsuas yog siv rau kev txuag hluav taws xob thiab sealing hauv kev txuag hluav taws xob thiab tub yees.Nws yog siv rau txheej txheej ntawm thermal rwb thaiv tsev cov ntaub ntawv xws li loj spherical cia tso tsheb hlau luam, loj-inch tshwj xeeb-zoo li tus yeeb nkab fittings, thiab txias cia phab ntsa, thiab muaj peev xwm paub txog ntawm qhov chaw foaming.
Ntau qhov teeb meem feem ntau ntsib hauv kev tsim kho ntawm polyurethane txau, yog li cov teeb meem no yog dab tsi?Qhov no tshwm sim li cas?
Qhov no feem ntau yog qhov teeb meem kev ua haujlwm, uas tau piav qhia hauv qab no:
| Common uaProblem | Rlub caij | Qhia |
| Rough thiab irregular ua npuas ncauj nto | Tsis zoo atomization, tshwj xeeb tshaj yog muaj ntau nrog tsev neeg cua-sib tov sprayers | Lub nraub qaum ntawm lub tshuab cua compressor thiab qhov kev ncua deb ntawm lub hauv paus phaj tuaj yeem hloov kho kom haum.Yog tias ua tau, ua kom ntev thiab txo cov cua sib xyaw nozzle.Me bor.Polyurethane high-pressure sprayer tuaj yeem khaws cia kom deb ntawm lub substrate. |
| Foaming lub sij hawm sai heev thiab viscosity ntawm dub thiab dawb | ||
| Ua npuas ncauj yog mos heev | Polyether ntau dhau | Nws raug nquahu kom ua qhov kev kuaj dawb foaming ntawm qhov tseeb piv.Yog tias nws tseem mos, koj tuaj yeem nce qhov kev faib ua feem ntawmisocyanatel tsim nyog.Yog tias nws tseem mos, nws yuav tsum tau kuaj xyuas seb puas yuav tsum tau siv ethylenediamine, tsim nyog nce cov khoom siv hauv cov khoom siv dawb. |
| ua npuas ncauj yog nkig
| Cov dej ntau dhau hauv qhov system | Yog hais tias tsuas yog qhov saum npoo yog nkig, xav txog seb qhov sib txawv ntawm cov khoom siv kub thiab qhov kub ntawm qhov nruab nrab yog qhov loj heev, yog tias cov khoom kub siab, thiab qhov kub ntawm qhov nruab nrab yog tsawg.Lwm qhov laj thawj yog tias muaj qhov sib txawv ntau dhau ntawm viscosity ntawm polyether thiab Isocyanate thiab ntau duaisocyanate. |
| Qhov sib txawv ntawm viscosity ntawm polyetherthiabIsocyanateloj dhau lawm | ||
| Tsawg tev lub zog ntawm npuas thiab substrate | Qhov saum npoo ntawm lub substrate tsis huv, nrog cov hmoov av ntab lossis roj stains | Tsis muaj kev nkag mus ntawm lub substrate, thiab noo noo ntawm lub interface yog pom los ntawm tev.Tsis tas li ntawd, qhov kub ntawm lub substrate yog tsawg heev, thiab lub foaming ceev ceev heev."Txaus" (xws li txau cov txheej txheej nyias sai sai), tab sis cov tshuaj tsuag tuab kuj tuaj yeem ua rau muaj kev nruj thiab tev. |
| npuas tawg
| Vim qhov qis qis ntawm cov ceg thiab kev ua haujlwm ntawm polyether siv hauv cov txheej txheem foaming | Sucrose, mannitol tuaj yeem muab ntxiv ua polyether oob khab raws li qhov tsim nyog.Tsis tas li ntawd, tsim nyog nce cov tshuaj tsuag txheej thaum lub sij hawm tsim kho kom tsis txhob rov tshwm sim |
| cais
| Lub sij hawm ua npuas ncauj nrawm dhau los yog qeeb dhau | Ua tib zoo saib xyuas cov foaming ceev |
| Ntau dhau ntawm silicone roj surfactant yog ntxiv rau lub foaming system |
Post lub sij hawm: Jun-29-2022