Kev npaj raw → cov kev coj cov teeb meem cov txheej txheem configuration → cov txheej txheem tswj → Ntim
Cov txheej txheem ntau lawm ntawm defosamer ua raws cov txheej txheem tseem ceeb ntawm cov khoom siv tseem ceeb, tswj cov txheej txheem tseem ceeb, kev siv huv huv thiab cov ntim khoom siv. Cov txheej txheem tshwj xeeb ntawm ntau hom kev tiv thaiv tsis sib txawv.
Cov txheej txheem ntau lawm
Raw Khoom Npaj
Xaiv cov ntaub ntawv yooj yim raws li hom ntawm defoamer: piv txwv li, thulsymy silicone roj, thiab lwm yam roj ntsha li roj ntsha, thiab cov kua qaub ua kom zoo nkauj.
Cov khoom siv raw yuav tsum tau tshuaj ntsuam nruj me ntsis rau kev coj dawb huv. Piv txwv li, cov dej solubility yuav tsum tau tswj cov roj silicone xav tau los ntawm hydroxyl tus nqi, thiab stearic acid yuav tsum tau raws li cov acid project txheem.
Cov tshuaj tiv thaiv kev teeb tsa
Ntxiv cov ntaub ntawv raw rau cov tshuaj reactor hauv kev faib ua feem. Piv txwv li, silicone defoamer xav tau emulsifier kom disicone roj los tsim cov emulsion, thiab stearic acid yuav tsum tsim los ntawm cov tshuaj uas esterification. ethylenebisstearamide.
Qhov ntau ntawm cov kuab tshuaj (xws li roj thiab dawb roj) ntxiv yuav tsum tau ua kom haum rau cov viscosity thiab kev ruaj ntseg ntawm lub system.
Txheej Txheem Tswj
Qhov kub thiab txias thiab siab: Cov tshuaj tiv thaiv ntawm silicone emulsion xav tau kom muaj 16}}}}}}} Cov Esterification xav tau 120 ~ 150 degree.
Lub sij hawm thiab stirring: lub sijhawm kev tawm tsam tau txiav txim siab raws li qhov kawg (xws li pH kev sib cais (ntau dua 3000 rpm) ua kom muaj kev sib cais.
Tus Txheej Txheem Purification
Tshem tawm cov imptities los ntawm kev lim, rov qab cov kuab tshuaj los ntawm distillation, thiab txhim kho cov khoom xim los ntawm tshuaj dawb (hydrogen peroxide kho).
Emulsion hom xav tau centrifugation lossis zoo li stratification nrhiav kom ntseeg tau tias muaj kev ruaj khov (xws li tsis muaj stratification ntawm 3000 rpm \/ 20 feeb).
Ntim thiab Ntim Khoom
Yo kom noo-pov thawj thiab lub teeb pov thawj ntim, kua siv ua kua lossis roj dawb raws li cov cab kuj yuav tsum tau muab khi kom tiv thaiv oxidation.
Cov txheej txheem raug
Organic silicone defoamer: silicone roj thiab emulsifier yog emulsify nyob rau hauv nitrogen inf to → centrifugal → ntim tau.
Stearic Acid EthylenediaMine Hom: Esterification ntawm stearic acid thiab ethylening glycol → Dispersion thiab cua txias hauv cov kua quav av → tiav khoom.
Tswjhwm cov ntsiab lus
Kev sim ntsuas: suav nrog PHICE ({{{2} {} {-5}}. 0% Dilution tsis ua npuas).
Kev Nyab Xeeb Kev Nyab Xeeb: Kev kub siab thiab kev tiv thaiv siab xav tau kev tawg-pov thawj qauv, thiab kev siv cov kuab tshuaj yuav tsum ua raws cov qauv kev nyab xeeb.