Synthesis thiab kev kawm tshawb fawb ntawm high-efficiency naphthalene-based superplasticizer rau thee-dej slurry dispersant

Synthesis thiab kev kawm tshawb fawb ntawm high-efficiency naphthalene-based superplasticizer rau thee-dej slurry dispersant

Synthesis thiab kev kawm tshawb fawb ntawm high-efficiency naphthalene-based superplasticizer rau thee-dej slurry dispersant
Coal dej slurry yog ib hom tshiab ntawm cov roj huv huv uas tsim los sai heev thaum muaj kev kub ntxhov roj hauv xyoo 1970s. CWS dispersant yog tus yuam sij los npaj siab concentration thiab siab stability CWS. -Naphthalene sulfonate sodium formaldehyde condensate muaj qhov zoo ntawm qhov zoo dispersibility, ruaj khov slurry, dav qhov chaw ntawm raw khoom thiab tus nqi qis, thiab tau dhau los ua tus nyiam dispersant hauv kuv lub teb chaws cov thee-dej slurry pulping kev lag luam. Lub dispersibility ntawm -naphthalenesulfonate sodium formaldehyde condensate muaj feem xyuam rau nws qhov hnyav molecular, nrog rau qhov nce ntawm molecular hnyav, qhov zoo dua nws dispersibility. Nyob rau hauv daim ntawv no, muaj naphthalene, concentrated sulfuric acid, thiab formaldehyde yog siv raws li raw cov ntaub ntawv, thiab ib tug high-efficiency naphthalene-raws li coal-water slurry dispersant - naphthalenesulfonate sodium formaldehyde condensate anionic surfactant yog synthesized los ntawm cov kauj ruam ntawm sulfonation, hydrolysis, condensation, thiab neutralization. Los ntawm kev hloov cov dej siv rau hydrolysis, hydrolysis lub sij hawm, hydrolysis kub thiab acidity tom qab hydrolysis, thiab qhov ratio ntawm naphthylaldehyde, condensation kub thiab condensation lub sij hawm thaum lub condensation txheej txheem, lub zog ntawm lub degree ntawm polymerization ntawm lub condensate yog soj ntsuam. Cov qauv ntawm cov khoom npaj 18 tau txiav txim siab los ntawm infrared spectroscopy, thiab qhov hnyav molecular ntawm cov khoom tau txiav txim siab los ntawm viscometry. Cov txiaj ntsig tau pom tias naphthalene: dej (qhov sib piv loj) {{10}}}: 0.25, lub sijhawm hydrolysis yog 60min, hydrolysis kub yog 115 degree, acidity tom qab hydrolysis yog 30 feem pua, naphthalene: formaldehyde (molar ratio) { {16}}: 0.7, condensation kub yog 100 degree -110 degree ,