Txheej manufacturers hais tias dej-dilutable coatings xa mus rau coatings npaj los ntawm emulsions ua zaj duab xis-tsim cov ntaub ntawv, nyob rau hauv uas hnyav-raws li resins yog yaj nyob rau hauv cov kuab tshuaj organic, thiab tom qab ntawd, nrog kev pab los ntawm emulsifiers, resins yog dispersed nyob rau hauv dej los ntawm cov neeg kho tshuab muaj zog. nplawm kom tsim emulsions, hu ua post-emulsion, tuaj yeem diluted nrog dej thaum tsim kho.
Cov xim npaj los ntawm kev ntxiv me me ntawm emulsion rau cov dej-soluble resin tsis tuaj yeem hu ua latex xim. Hais lus nruj me ntsis, cov xim dej-thinning tsis tuaj yeem hu ua latex xim, tab sis nws kuj tau muab cais ua cov xim latex los ntawm lub rooj sib tham.
Qhov zoo thiab qhov tsis zoo ntawm cov txheej txheem dej
1. Siv dej ua cov kuab tshuaj cawm tau ntau yam kev pab. Tiv thaiv hluav taws kub thaum lub sij hawm tsim kho thiab cov pa phem raug txo. Tsuas yog ib qho me me ntawm cov cawv cawv ether organic hnyav yog siv, uas txhim kho qhov chaw ua haujlwm.
2. Cov organic hnyav ntawm cov xim dej zoo tib yam yog nyob nruab nrab ntawm 10% thiab 15%, tab sis cov xim cathodic electrophoretic tam sim no tau raug txo kom tsawg dua 1.2%, uas muaj cov txiaj ntsig pom tseeb ntawm kev txo cov pa phem thiab txuag cov peev txheej.
3. Lub dispersion stability rau lub zog mechanical quab yuam yog qhov tsis zoo. Thaum cov dej ntws tawm hauv cov raj xa dej sib txawv heev, cov khoom tawg yog compressed rau hauv cov khoom, uas yuav ua rau pitting ntawm txheej zaj duab xis. Nws yog qhov yuav tsum tau ua kom lub raj xa dej xa mus tau zoo thiab cov yeeb nkab phab ntsa tsis muaj qhov tsis xws luag.
4. Nws yog corrosive heev rau txheej khoom. Corrosion-resistant hauv ob sab phlu lossis stainless hlau cov ntaub ntawv yuav tsum tau, thiab cov khoom siv yog tus nqi siab. Corrosion thiab hlau dissolution ntawm lub conveying pipeline yuav ua rau nag lossis daus thiab pitting ntawm dispersed hais nyob rau hauv lub txheej zaj duab xis, yog li ntawd stainless hlau kav kuj siv.
Kev ua tiav daim ntawv thov thiab kev tsim kho ntawm cov xim manufacturers
1. Kho cov xim kom haum rau cov tshuaj tsuag viscosity nrog dej huv, thiab ntsuas qhov viscosity nrog Tu-4 viscometer. Qhov tsim nyog viscosity feem ntau yog 2 mus rau 30 vib nas this. Cov chaw tsim tshuaj pleev xim tau hais tias yog tias tsis muaj viscometer, koj tuaj yeem siv txoj hauv kev pom los do cov xim nrog ib tug pas hlau, do mus rau qhov siab ntawm 20 cm thiab nres los soj ntsuam.
2. Cov cua siab yuav tsum tswj ntawm 0.3-0.4 MPa thiab 3-4 kgf / cm2. Yog tias qhov siab qis dhau lawm, cov xim yuav tsis zoo atomize thiab nto yuav pitted. Yog tias lub siab loj dhau lawm, nws yooj yim rau sag, thiab cov xim pos huab loj heev rau cov ntaub ntawv pov tseg thiab cuam tshuam rau kev noj qab haus huv ntawm cov neeg ua haujlwm tsim kho.
3. Qhov kev ncua deb ntawm lub nozzle thiab qhov saum npoo ntawm cov khoom yog 300-400 mm, thiab nws yooj yim rau sag yog tias nws yog ze heev. Yog tias nws nyob deb dhau, cov xim pos huab yuav tsis sib xws thiab yuav muaj pitting. Thiab yog tias lub nozzle nyob deb ntawm qhov chaw ntawm cov khoom, cov xim pos huab yuav nthuav tawm ntawm txoj kev, ua rau khib nyiab. Cov chaw tsim tshuaj pleev xim tau hais tias qhov kev ncua deb tuaj yeem txiav txim siab raws li hom xim, viscosity thiab huab cua siab.
4. Cov phom txau tuaj yeem txav mus los, sab laug thiab sab xis, thiab tuaj yeem khiav sib npaug ntawm qhov ceev ntawm 10-12 m / min. Nws yuav tsum ncaj thiab ncaj nraim rau saum npoo ntawm cov khoom. Thaum txau rau ntawm ob sab ntawm qhov chaw ntawm qhov khoom, tes uas rub tus txhais tes ntawm rab phom txau yuav tsum tau tso tawm sai sai. Nyob rau, qhov no yuav txo cov xim pos huab.
Post lub sij hawm: Jan-18-2024