Lub hauv paus ntsiab lus ntawmsodium lignosulfonateyog benzyl propane derivative.Cov pab pawg sulfonic acid txiav txim siab tias nws muaj cov dej solubility zoo, tab sis nws yog insoluble hauv ethanol, acetone thiab lwm yam organic solvents.Hom softwood lignosulfonate tuaj yeem qhia tau los ntawm cov tshuaj formula C9H8.5O2.5 (OCH3) 0.55 (SO3H) 0.4.
Cov yam ntxwv ntawm cov qauv thiab qhov hnyav molecular faib ntawm lignosulfonate txiav txim siab tias nws txawv ntawm lwm cov hluavtaws surfactants hauv ntau yam.Nws muaj cov yam ntxwv ntawm lub cev thiab tshuaj lom neeg hauv qab no:
1.Lub nto active lignosulfonate molecule muaj ntau pawg hydrophilic thiab tsis muaj linear alkyl saw, yog li nws cov roj solubility tsis muaj zog heev, nws hydrophilicity muaj zog heev, thiab nws cov pob txha hydrophobic yog spherical, thiab nws tsis tuaj yeem muaj cov theem zoo sib xws zoo li qub. Tsawg molecular surfactants.Yog li ntawd, txawm hais tias nws tuaj yeem txo qhov nro ntawm cov tshuaj, nws muaj kev tswj me ntsis ntawm qhov nro thiab yuav tsis tsim micelles.
2.Qhov viscosity ntawm slurry tuaj yeem raug txo los ntawm kev ntxiv me me ntawm lignosulfonate rau hauv cov kua slurry los ntawm adsorption thiab dispersion;Thaum ntxiv rau lub thinner ncua kev kawm ntawv, qhov teeb meem ceev ntawm tshem tawm hais yuav raug txo.Qhov no yog vim tias lignosulfonate muaj zog hydrophilicity thiab electronegativity.Nws tsim cov anionic pawg hauv cov tshuaj aqueous.Thaum nws yog adsorbed rau ntau yam organic los yog inorganic hais, cov hais muaj ib tug ruaj khov dispersion xeev vim kev sib nrig sib repulsion ntawm anionic pawg.Qee cov kev tshawb fawb kuj qhia tau hais tias cov adsorption thiab dispersion ntawm lignosulfonate yog tshwm sim los ntawm electrostatic repulsion quab yuam thiab lubrication ntawm me npuas npuas, lubrication ntawm micro npuas yog lub ntsiab yog vim li cas rau nws dispersion: cov dispersion nyhuv ntawm lignosulfonate txawv nrog nws molecular hnyav thiab raug ncua. qhov system.Feem ntau, cov feem uas muaj qhov hnyav molecular li ntawm 5000 txog 40,000 muaj kev cuam tshuam zoo dua.
3.chelation lignosulfonate muaj ntau phenol hydroxyl, cawv hydroxyl, carboxyl thiab carbonyl pawg, nyob rau hauv uas cov un sib koom electron khub ntawm cov pa atom tuaj yeem tsim kev sib koom tes nrog hlau ions, ua rau chelation, tsim hlau chelates ntawm lignin, yog li muaj cov yam ntxwv tshiab. .Piv txwv li, chelation ntawm lignosulfonate nrog cov hlau ion, chromium ion, thiab lwm yam tuaj yeem siv los npaj cov roj drilling av nkos, thiab chelation kuj ua rau nws muaj qee yam corrosion thiab scale inhibition teebmeem, uas tuaj yeem siv los ua tus neeg saib xyuas dej.
4.Qhov kev sib txuas ua haujlwm yog nyob rau hauv cov nroj tsuag ntuj.Zoo li cov nplaum nplaum, lignin faib nyob ib ncig ntawm cov fibers thiab nruab nrab ntawm cov fibers me me hauv cov fibers, inlaid nrog fibers thiab me me fibers, ua rau nws muaj zog skeleton qauv.Qhov laj thawj vim li cas cov ntoo tsis tuaj yeem poob rau kaum metres lossis ntau pua metres yog vim qhov adhesion ntawm lignin.Lignosulfonate sib cais los ntawm cov cawv dub tuaj yeem hloov kho kom rov qab ua cov nplaum qub, thiab cov suab thaj thiab nws cov derivatives hauv cov cawv cawv tuaj yeem pab txhim kho lawv cov nplaum nplaum los ntawm kev sib koom ua ke.
5.Foaming kev ua tau zoo Lub foaming kev ua tau zoo ntawm lignosulfonate zoo ib yam li cov polymer surfactants, uas muaj cov yam ntxwv ntawm tsawg foaming muaj peev xwm, tab sis zoo stability ntawm ua npuas ncauj, thiab cov foaming kev ua tau zoo ntawm lignosulfonate yuav muaj tej yam cuam tshuam rau nws daim ntawv thov kev ua tau zoo.Piv txwv li, thaum nws yog siv los ua ib qho kev txo qis dej, ntawm ib sab, vim yog lub lubrication ntawm npuas tsim los ntawm lignosulfonate, lub fluidity ntawm pob zeb yuav nce thiab kev ua haujlwm yuav zoo dua;Ntawm qhov tod tes, cov cuab yeej foaming yuav ua rau kom huab cua nkag thiab txo lub zog ntawm pob zeb.Thaum siv los ua huab cua entraining dej txo tus neeg sawv cev, nws yog qhov zoo los txhim kho Frost tsis kam thiab durability ntawm pob zeb.
Post lub sij hawm: May-08-2023