Octadecyl Acrylate yog xim tsis muaj xim thiab pob tshab
Octadecyl acrylate yog ib yam tshuaj uas muaj cov mis molecular ntawm C21H40O2 thiab molecular hnyav ntawm 324.54, manifested raws li ib tug colorless pob tshab kua. Hauv kev faib cov tshuaj, cov tshuaj no belongs rau cov tshuaj irritant, uas tuaj yeem ua rau muaj kev phom sij loj rau lub qhov muag thiab tuaj yeem ua rau rhiab heev thaum sib cuag nrog daim tawv nqaij. Nws yuav tsum tsis txhob raug tshav ntuj lossis qhov kub thiab txias rau lub sijhawm ntev. Cov ntaub ntawv ib feem ntawm lub cev ntawm cov ntaub ntawv no yog raws li nram no: ceev 0.868, melting point 32-34 degree, flash point 153.1 degree C, boiling point 400.2 degree C ntawm 760 mmHg. Octadecyl acrylate yog insoluble nyob rau hauv dej thiab soluble nyob rau hauv tsawg polarity organic solvents. Nws muaj qhov yooj yooj yim, dej tsis kam, huab cua tsis kam, tsis tshua muaj hluav taws xob, thiab qis shrinkage.
Raws li physicochemical thaj chaw ntawm octadecyl acrylate, qhov sib xyaw no tuaj yeem siv los ua tus neeg sawv cev diluent thiab crosslinking tus neeg sawv cev hauv cov kab hluav taws xob tua hluav taws xob, nrog rau cov khoom siv hluav taws xob sib txuas thiab cov hloov kho rau cov khoom siv polymer xws li yas, roj hmab, thiab polyurethane [1] . Piv txwv li, dej-borne polyurethane (WPU) lotion nrog ob daim ntawv cog lus yog tsim los ntawm toluene diisocyanate (TDI), hydroxypropyl terminated silicone roj, trimethylolpropane (TMP), N-methyldiethanolamine (N-MDEA), hydroxyethyl acrylate (HEA), thiab lwm yam. Los ntawm kev hloov kho waterborne polyurethane nrog octadecyl acrylate, waterborne polyurethane nrog ib tug ntev saw hydrophobic alkyl qauv yuav tau, thiab nws cov dej repellent zog tuaj yeem tswj tau los ntawm kev hloov cov ntsiab lus ntawm octadecyl acrylate. Nrog rau qhov nce ntawm octadecyl acrylate cov ntsiab lus, cov dej nqus tus nqi ntawm WPU zaj duab xis yog zoo txo mus rau 4.25%, thiab cov dej sib cuag lub kaum sab xis ntawm cov ntaub coated yog zoo heev. Ntxiv mus, thaum cov ntsiab lus octadecyl acrylate yog 40%, cov dej tawm ntawm polyurethane ntawm chav tsev kub tuaj yeem ncav cuag tus nqi zoo ntawm 80+ cov ntsiab lus.
Octadecyl acrylate tuaj yeem siv los ua lub ncuav qab zib rau cov khoom siv roj. Ntxiv cov ncuav qab zib rau cov tshuaj hloov kho thiab kev thauj mus los ntawm cov roj av nkos yog ib txoj hauv kev zoo hauv daim ntawv thov xws li kev sib sau lossis kev thauj mus los ntev. Txawm li cas los xij, tseem muaj ntau yam teeb meem ntawm daim ntawv thov nrog cov tsoos polymer raws li cov ntsiab lus depressants, xws li qhov tsis txaus siab ntawm qhov dej thiab qhov viscosity txo qhov cuam tshuam rau qee cov roj crude, lub sijhawm tsis zoo, thiab tsis zoo rau kev txiav thiab rov ua cua sov. Yog li ntawd, nws yog ib qho tseem ceeb los tsim cov tshiab pour point depressants thiab ua qhov kev tshawb fawb tob txog cov kev cai lij choj thiab cov txheej txheem ntawm ncuav point depressants. Organic hloov kho ntawm ntuj inorganic nanoclay tau nqa tawm siv cationic surfactant octadecyltrimethylammonium chloride los ntawm ion intercalation pauv. Siv cov toluene ua cov kuab tshuaj, polyacrylic acid octadecyl ester (POA) / hloov kho av nplaum nanocomposite pour point depressant tau npaj los ntawm kev daws cov txheej txheem sib txawv ntawm qhov sib txawv, qhov kub thiab txias, thiab kev sib xyaw ua ke. Cov qauv ntawm nanocomposite pour point depressant yog tus cwj pwm siv cov txheej txheem cuam tshuam, Cov txiaj ntsig tau pom tias nanocomposite pour point depressant muaj cov khoom siv sib xyaw ua ke thiab exfoliated, thiab tuaj yeem sib txawv hauv cov roj theem system. Ib qho roj av zoo li qub, Changqing crude roj, raug xaiv los ua cov qauv roj rau kev tshawb fawb. Cov txiaj ntsig tau pom tias piv rau cov ntshiab POA nchuav cov ntsiab lus depressants nyob rau hauv tib yam kev mob ntxiv, cov khoom sib xyaw ua ke ntawm cov ntsiab lus depressants tuaj yeem ua rau cov wax nag lossis daus taw tes ntawm cov roj crude, ntxiv txo cov gel point, viscosity, thiab cov qauv tsim tawm tus nqi ntawm cov roj crude. Qhov kub-kub microscopic wax siv lead ua qauv ntawm cov qauv roj yog ua tiav thiab compact, thiab kev sib nrig sib flocculation muaj peev xwm tsis muaj zog [2]. Tsis tas li ntawd, octadecyl acrylate kuj tuaj yeem siv los ua tus neeg sawv cev rau cov txheej txheem, txheej txheej, thiab xim.