Vim li cas rau cov npuas thaum lub sijhawm do:
Yog vim li cas cov npuas dej thiaj li tshwm sim thaum lub sijhawm sib tov ntawm cov khoom sib xyaw ua keepoxy resinkua nplaum yog tias cov pa roj uas tau nkag los thaum lub sijhawm sib tov ua rau muaj cov npuas. Lwm qhov laj thawj yog "cavitation effect" uas tshwm sim los ntawm cov kua dej uas tau sib tov sai dhau. Muaj ob hom npuas: pom thiab tsis pom. Kev siv lub tshuab nqus tsev degassing tsuas yog tuaj yeem tshem tawm cov npuas uas pom, tab sis nws tsis zoo rau kev tshem tawm cov npuas me me uas tib neeg lub qhov muag tsis pom.
Vim li cas rau cov npuas thaum lub sijhawm kho:
Qhov no yog vim tias epoxy resin raug kho los ntawm polymerization, uas yog ib qho tshuaj lom neeg. Thaum lub sijhawm kho, cov npuas me me hauv epoxy resin system kub thiab nthuav dav, thiab cov roj tsis sib haum nrog epoxy system, thiab tom qab ntawd sib sau ua ke los tsim cov npuas loj dua.
Ua rau epoxy resin foaming:
(1) Cov khoom siv tshuaj tsis ruaj khov
(2) Kev sib tov thaum npaj cov khoom ua kom tuab
(3) Ua npuas ncauj tom qab sau cov khoom tuab
(4) Cov txheej txheem tso tawm slurry
Kev phom sij ntawm epoxy resin foaming thaum sib tov:
(1) Ua npuas ncauj ua rau muaj kev ntws thiab kev siv cov khoom tuab, uas tseem yuav cuam tshuam rau qhov siab ntawm cov kua dej uas pom.
(2) Cov npuas dej uas tshwm sim los ntawm cov tshuaj amines molecular yuav cuam tshuam rau kev ua haujlwm ntawm kev tsim kho.
(3) Qhov muaj "npuas ntub" yuav ua rau VCM roj theem polymerization, uas feem ntau tsim tawm hauv lub lauj kaub nplaum.
(4) Yog tias cov npuas tsis raug tshem tawm tag thaum lub sijhawm tsim kho, cov npuas yuav tsim tom qab kho, thiab yuav muaj ntau lub qhov ntawm qhov chaw tom qab ziab, uas yuav cuam tshuam rau qhov zoo ntawm cov khoom.
Yuav ua li cas tshem tawm cov npuas cua?
Cov khoom siv defoaming feem ntau siv: cov neeg sawv cev silicone defoaming, cov neeg sawv cev tsis yog silicon defoaming, cov neeg sawv cev polyether defoaming, cov neeg sawv cev roj av defoaming, cov neeg sawv cev defoaming cawv siab, thiab lwm yam.
Thaum qhov kub qis, cov yam ntxwv ntawm feem ntau cov kua dej yuav hloov pauv, tshwj xeeb tshaj yog qhov viscosity ntawm cov kua nplaum yuav nce ntxiv thaum qhov kub txo qis.Epoxy resin ab kua nplaum, ua ib yam khoom siv ua kua, muaj qhov nce ntxiv ntawm qhov viscosity vim qhov kub thiab txias txo qis. Yog li ntawd, thaum siv thiab siv, cov npuas nyuaj rau tshem tawm, qhov kev ua kom tiaj tus txo qis, thiab qhov nce ntawm lub sijhawm siv thiab lub sijhawm kho tsis zoo rau kev tsim khoom thiab kev tswj hwm ib txwm muaj. Txawm li cas los xij, los ntawm kev sib sau ua ke ntawm ntau xyoo ntawm kev paub txog kev tsim khoom, peb tau sau qee qhov kev paub pab tau los daws thiab txo cov teeb meem uas tshwm sim los ntawm cov teeb meem saum toj no. Tshwj xeeb, muaj plaub txoj hauv kev hauv qab no:
1. Txoj kev ua kom sov ntawm qhov chaw ua haujlwm:
Thaum qhov kub ntawm qhov chaw ua haujlwm poob qis mus txog 25°C, yuav tsum tau ua kom qhov chaw ua haujlwm sov kom zoo kom nce qhov kub mus rau qhov kub uas tsim nyog rau kev siv kua nplaum (25°C ~ 30°C). Tib lub sijhawm, qhov av noo ntawm qhov chaw ua haujlwm yuav tsum tswj kom nyob ntawm 70%. lossis li ntawd, kom txog thaum qhov kub ntawm cov kua nplaum nws tus kheej zoo ib yam li qhov kub ib puag ncig ua ntej cov kua nplaum tuaj yeem ua haujlwm thiab siv tau zoo.
Kev ceeb toom sov so: Txoj kev no yog txoj kev zoo tshaj plaws, tab sis tus nqi khiav lag luam yuav kim heev, thov ua tib zoo saib xyuas kev suav tus nqi.
2. Txoj kev ua kom dej npau:
Kev txias yuav ncaj qha txo qhov viscosity ntawmepoxy resinkua nplaum ab thiab ua rau nws nce ntxiv ntau heev. Ua kom nws sov ua ntej siv cov kua nplaum yuav ua rau nws qhov kub nce ntxiv thiab txo qhov viscosity, ua rau nws yooj yim siv. Txoj kev tshwj xeeb yog muab tag nrho lub thoob lossis lub raj mis kua nplaum rau hauv dej npau thiab ua kom sov li 2 teev ua ntej siv cov kua nplaum, kom qhov kub ntawm cov kua nplaum nce mus txog li 30 ℃, tom qab ntawd coj nws tawm, co nws ob zaug, thiab tom qab ntawd khaws cov kua nplaum A ntawm qhov kub tsis tsawg dua 30 ℃ hauv dej sov thiab siv thaum ua kom sov. Thaum siv, tshem cov kua nplaum tawm thiab co nws txhua ib nrab teev kom khaws qhov kub thiab cov khoom sib npaug ntawm cov kua nplaum. Tab sis ceev faj tshwj xeeb kom tsis txhob cia cov kua nplaum hauv lub thoob lossis lub raj mis lo rau dej, txwv tsis pub nws yuav ua rau muaj qhov tsis zoo lossis loj heev.
Lus ceeb toom sov siab: Txoj kev no yooj yim, pheej yig thiab siv tau, thiab tus nqi thiab cov ntaub ntawv yooj yim heev. Txawm li cas los xij, muaj tej yam txaus ntshai zais cia, uas yuav tsum tau them sai sai.
3. Txoj kev ua kom sov hauv qhov cub:
Cov neeg siv uas muaj cov mob no siv tau epoxy resin ab los ua kom cov kua nplaum kub hauv qhov cub ua ntej siv cov kua nplaum kom tsis txhob muaj kev sib cuag nrog dej. Nws yooj yim heev. Txoj kev tshwj xeeb yog kho qhov kub ntawm qhov cub kom txog 60 ° C, tom qab ntawd muab tag nrho lub thoob lossis lub raj mis ntawm cov kua nplaum A rau hauv qhov cub kom ua ntej cua sov, kom qhov kub ntawm cov kua nplaum nws tus kheej ncav cuag 30 ° C, tom qab ntawd muab cov kua nplaum tawm thiab co nws ob zaug, thiab tom qab ntawd muab cov kua nplaum ntawm qhov kub ntawm Kho kom txog 30 ° C hauv nruab nrab ntawm qhov cub siv cov npoo uas tau ua ntej, tab sis ceev faj kom muab cov kua nplaum tawm thiab co nws li ib teev kom cov kua nplaum ib txwm tswj qhov kub sib npaug nrog cov khoom xyaw.
Kev ceeb toom sov so: Txoj kev no kuj tseem yuav ua rau tus nqi nce me ntsis, tab sis nws yooj yim thiab ua tau zoo.
4. Txoj kev pab cuam rau tus neeg sawv cev defoaming:
Yuav kom ua kom cov npuas dej tawm sai dua, koj tuaj yeem yuav cov tshuaj tua npuas tshwj xeeb rau cov kua nplaum epoxy resin ab-ntxiv, thiab ntxiv cov kua nplaum A nrog qhov sib piv ntawm 3‰ sab hauv, txoj kev tshwj xeeb; ncaj qha ntxiv tsis pub ntau tshaj 3% ntawm cov kua nplaum rau cov kua nplaum A uas tau cua sov los ntawm txoj kev saum toj no. Cov tshuaj tua npuas tshwj xeeb rauepoxy resin AB kua nplaum, ces do kom sib npaug thiab sib tov nrog B kua nplaum rau kev siv.
Shanghai Orisen Cov Khoom Siv Tshiab Technology Co., Ltd.
M: +86 18683776368 (thiab whatsapp)
Xov tooj: +86 08383990499
Email: grahamjin@jhcomposites.com
Chaw Nyob: NO.398 Txoj Kev Ntsuab Tshiab Xinbang Town Songjiang District, Shanghai
Lub sijhawm tshaj tawm: Lub Ib Hlis-07-2025