1.What yog cov ntsiab cai thiab cov qauv rau cov pa dej vapor permeability kuaj?
Lub hauv paus ntsiab lus: siv "txoj kev khob" (qhov hnyav) lossis "cov dej el electrolytic dhau los ntawm cov txheej txheem ntawm ib lub sijhawm, hauv chav ntawm G / M²CH 6H.
Kuaj Tus Qauv: Xa mus rau Astm E96 (qhov hnyav txheej txheem) lossis ISO 15106-3 (electrolytic txoj kev).
Cov kauj ruam hauv kev ua haujlwm: Foob cov xim-txheej coil qauv ntawm lub khob dej noo (xws li huab cua sov 3%), thiab hnyav nws tsis tu ncua los laij cov dej vapor permication.
Kev Txhais Lus:
Zoo heev ntom ntom txheej (xws li PVDF Fluorocarbon txheej): dej vapor permeability feem ntau yog<5g/m²・24h (molecular structure contains fluorine, low polarity, and water vapor is difficult to penetrate).
Nruab Nrab Dense txheej (xws li Silicon-hloov Polyester SMP): permeability 5-15g / m²CECE.
Coatings with poor density (such as ordinary acrylic acid): permeability>15G / m · 24h - LEAS ROJ NQI CROSS-sib txuas cov lej thiab cov molecular loj loj).
2.What cov ntsiab cai ntawm kev xeem papyagility portingbility thiab yuav ua li cas los txhais cov txiaj ntsig?
Lub hauv paus ntsiab lus: tus nqi ntawm cov roj av xws li oxygen thiab carbon dioxide nyob rau hauv txheej yog ntsuas los ntawm cov roj roj ntsuas kom muaj peev xwm thaiv roj.
Qhov tshwm sim sib txawv:
Cov pa oxygen perveability ntawm fluorocarbon (PVDF) txheej yog tsawg dua 10cm³ yog qhov tsim nyog rau cov xwm txheej siab;
Cov pa oxygen permeability ntawm dog dig polyester (PE) txheej tuaj yeem ncav cuag 30-50cmling tuaj yeem ncav cuag 30-50cmt · 24- thiab roj tau yooj yim.
3.Qhov yog cov ntsiab cai thiab cov xwm txheej thov kev ua kua (xws li ntsev dej) nkag mus kuaj?
Lub hauv paus ntsiab lus: ib sab ntawm txheej qauv yog nthuav tawm cov kev daws teeb meem, thiab lwm sab yog muaj cov kua nkag, thiab cov kua nkag mus.
Application scenario: Evaluate the ability of color-coated coils to resist corrosion medium penetration in a high salt spray environment. A penetration time of >1000h tau zoo heev.
4.How mus soj ntsuam txheej hla kev uas siv scanning Electron tsom iav (sua)?
Kev ua haujlwm: Txiav cov xim-coated coil qauv thiab ua kub txau. Siv Sem nyem kom pom cov qauv sab hauv ntawm cov txheej:
Ntsis txheej: Tsis muaj qhov pom tseeb nyob rau hauv cov cross ntu cross. Lub cob thiab cov xim rhawv tau nruj nreem ua ke tsis muaj qhov khoob;
Cov xoob xoob: Cov tawv nqaij tawv lossis cov khoom me me tsim los ntawm cov xim agglomeration tuaj yeem pom hauv seem hla. Xws li tsis xws luag yog "channels" rau nruab nrab nkag.
5.Qhov yog cov txheej txheej pinhot kuaj pom thiab cov qauv yuav tsum tau ua?
Txoj kev: Siv ib lub tshuab hluav taws xob "hluav taws xob sprover" (hluav taws xob yuav tawg rau ntawm cov khoom sib txawv, thiab sau cov lej ntawm cov pinholes (chav ua haujlwm: / m²).
Cov Qauv Yuav Tsum Tau: Tus lej ntawm pinholes: Yuav tsum muaj tsawg dua li ntawm 1 / m², txwv tsis pub nws yooj yim los ua ib qho kev kawm rau kev tawm tsam.