Lub hom phiaj ntawm kev tsim khoom tam sim no yog los muab ib txoj hauv kev los txhim kho kev ua tau zoo thiab cov khoom siv lub neej ntawmmelamine molding hmoovcov khoom, txuag cov peev txheej, ua kom cov xim ntawm cov khoom molded, thiab txhim kho cov khoom sib txawv ntawm cov khoom molded.
Txoj kev npaj muaj xws li A tivthaiv kev npaj, B tivthaiv kev npaj thiab tiav cov khoom tiav.
Ib kauj ruam npaj
1. Cov tshuaj tiv thaiv: Nyob rau hauv lub reactor, cov formaldehyde resin yog ua los ntawm 38% formaldehyde tov nyob rau hauv proportions, thiab pH tus nqi yog hloov mus rau 8.5 nyob rau hauv lub reactor, thiab ces melamine yog ntxiv nyob rau hauv proportions rau react.Kub rau 90 ° C mus rau qhov kawg taw tes;
2. Kneading: Tom qab txias rau 70 ° C, muab cov reactant rau hauv lub kneader, thiab ntxiv ntoo pulp fiber thiab pigment A raws li qhov sib piv kneading.
3. Qhuav: Tom qab kneading, nkag mus rau hauv lub qhov cub kom qhuav.Lub qhov cub siv lub mesh siv cua kub qhov cub, uas yog qhuav nyob rau hauv cov cua kub ntawm 85 ° C, thiab cov ya raws yog tswj hauv qab no 3.5% kom tau cov ntaub ntawv qhuav.
4. Pob milling: xa cov ntaub ntawv qhuav mus rau lub pob zeb, ntxiv cov roj nplua nyeem, kho tus neeg sawv cev, titanium dioxide thiab pigment A additives nyob rau hauv kev faib ua feem, thiab ua kom tiav cov densification thiab xim txuam los ntawm pob milling hauv 9 teev;
Kev npaj cov kauj ruam ntawm ntu B
Cov xim ntawm cov khoom B sib txawv ntawm cov khoom A, tab sis cov txheej txheem npaj yog tib yam.
Kev npaj cov khoom tiav: sib tov sib xyaw A thiab cov khoom Bmelamine hmoov, thiab ces ntim lawv rau hauv ib lub hnab ntawv lined nrog ib zaj duab xis.Cov hmoov ua tiav yuav tsum muab khaws cia rau hauv qhov chaw qis dua 25 ° C.
Post lub sij hawm: Nov-25-2020