Dab tsi ntawm cov dej ua haujlwm siab txo cov neeg ua haujlwm muaj? Muaj ntau ntau hom kev ua haujlwm siab dej-txo cov neeg ua haujlwm. Cov khoom siv feem ntau yog naphthalene-raws li dej-txo cov neeg ua haujlwm, melamine-based thiab hloov kho melamine-raws li dej-txo cov neeg ua haujlwm, sulfamate-raws li dej-txo cov neeg ua haujlwm, aliphatic dej-txo cov neeg ua haujlwm, thiab cov tshuaj anthracene-raws li dej-txo. Tus neeg saib xyuas thiab ntxuav cov roj yog cov dej txo cov neeg ua haujlwm. Cia peb saib seb hom dej ua kom muaj txiaj ntsig zoo li cas thiaj li muaj!
High-efficiency dej-txo cov neeg ua hauj lwm txawv los ntawm cov dej-txo cov neeg sawv cev nyob rau hauv uas lawv muaj ib tug ntau dua dej-txo tus nqi thiab qis cua entrainment peev xwm. Cov hom tseem ceeb ntawm cov dej ua haujlwm siab txo cov neeg ua haujlwm tam sim no muaj xws li hauv qab no:
1. Naphthalene series high-efficiency dej txo tus neeg sawv cev
Naphthalene-raws li dej txo cov neeg ua haujlwm tuaj yeem muab faib ua cov khoom siv siab (Na2SO4 cov ntsiab lus tsawg dua 3%), cov khoom nruab nrab cov ntsiab lus (Na2SO4 cov ntsiab lus 3% ~ 10%) thiab cov khoom qis qis (Na2SO4 cov ntsiab lus ntau dua 10%) raws li rau Na2SO4 cov ntsiab lus hauv cov khoom. Naphthalene-raws li dej-txo admixture yog cov khoom siv ntau tshaj plaws thiab siv dav siv cov dej-txo cov neeg ua haujlwm siab hauv kuv lub teb chaws (sau npe rau ntau tshaj 70% ntawm cov neeg siv cov dej txo qis). Nws yog tus cwj pwm los ntawm kev txo qis dej siab (15% mus rau 25%), tsis muaj cua nkag, cuam tshuam me ntsis ntawm lub sijhawm teem, zoo yoog rau cov cement, tuaj yeem siv ua ke nrog ntau yam khoom sib xyaw, thiab pheej yig heev.
2. Melamine series thiab hloov melamine series high-efficiency dej txo tus neeg sawv cev
Nws yog ib yam khoom ntawm condensation ntawm melamine nrog formaldehyde tom qab sulfonation nrog sulfuric acid, yog li cov tshuaj lub npe yog sulfonated melamine formaldehyde resin, uas yog anionic surfactant. Hom dej-txo tus neeg sawv cev zoo li cov hmoov dawb, yog yooj yim soluble hauv dej, muaj kev sib cais zoo hauv cov khoom siv hmoov, muaj cov dej txo qis, thiab muaj cov dej zoo thiab kho tus kheej.
3. Sulfamate series high-efficiency dej txo tus neeg sawv cev
Sulfamate high-efficiency dej-txo tus neeg saib xyuas yog monocyclic aromatic hydrocarbon high-efficiency dej-txo tus neeg saib xyuas. Nws yog tsim los ntawm p-aminobenzenesulfonic acid, monocyclic aromatic hydrocarbon derivatives phenolic tebchaw thiab formaldehyde, uas yog rhuab thiab condensed nyob rau hauv acidic los yog alkaline tej yam kev mob. Cov qauv molecular ntawm sulfamic acid dej-txo tus neeg saib xyuas yog qhov nyuaj, thiab cov monomers sib txawv yuav muaj cov qauv molecular sib txawv. Cov saw tseem ceeb ntawm sulfamic acid superplasticizer yog sib txuas los ntawm phenyl thiab methylene pawg. Cov saw tseem ceeb muaj coob tus ceg saw nrog hydrophilic functional pawg xws li sulfonic acid pawg, amino pawg, thiab hydroxyl pawg.
4. Aliphatic (aldehyde thiab ketone condensate) cov dej ua kom muaj txiaj ntsig zoo
Aliphatic high-efficiency dej txo tus neeg sawv cev yog carbonyl pyroaldehyde synthesized los ntawm sulfonation ntawm polymers, thiab cov saw tseem ceeb ntawm pawg hydrophobic yog aliphatic hydrocarbons. Cov dej-txo cov neeg ua haujlwm siab no tau siv dav rau cov cement, muaj qhov pom tseeb txhawb zog ntawm cov pob zeb, thiab muaj qhov poob qis me me. Me me, tsis muaj sodium sulfate crystallization ntawm qhov kub thiab txias. Nws yog dav siv nyob rau hauv kev npaj ntawm ntau tus kheej cov dej-txo cov neeg ua hauj lwm xws li twj tso kua mis, retardants, thaum ntxov lub zog, antifreeze agents, air-entraining agents, thiab lwm yam. , amino dej-txo tus neeg saib xyuas, thiab polycarboxylate dej-txo tus neeg saib xyuas.
5. Anthracene-based high-efficiency dej-txo tus neeg sawv cev
Cov tan hmoov tau los ntawm sulfonation, hydrolysis condensation, neutralization thiab atomization ziab ntawm crude anthracene yog non-toxic, odorless thiab tsis muaj chloride ions. Nws muaj cov yam ntxwv ntawm cov dej txo qis, qis cua nkag ntim, thiab kev txhawb zog siab thaum lub sij hawm sib xyaw ua ke. Cov pob zeb sib xyaw muaj kev tsim kho tau zoo, tsis yooj yim los ntshav thiab cais tawm, thiab haum rau cov pob zeb nrog C10 ~ C60 lub zog.
6. Roj-ntxuav dej-txo cov neeg ua haujlwm siab
Siv cov roj coking ntxuav, lwm cov khoom los ntawm cov thee coking, raws li cov khoom siv raw, peb siv cov txheej txheem ntau lawm zoo ib yam li cov naphthalene-raws li dej-txo cov neeg ua hauj lwm los tsim polycyclic aromatic hydrocarbon sulfonate formaldehyde condensate, uas nws cov kev ua tau zoo ib yam li cov naphthalene. - raws li dej-txo cov neeg sawv cev. Nws yog cov dej-txo cov neeg ua haujlwm siab nrog ntau qhov chaw ntawm cov khoom siv raw, tus nqi qis thiab kev lag luam zoo.