Sulfamate Series Superplasticizer
Oct 25, 2022
Sulfamate series superplasticizer
--Los ntawm Baidu Encyclopedia
Lub npe tshuaj yog aromatic sulfamate polymer, thiab nws yog tsim nrog sodium p-aminobenzenesulfonate thiab phenol ua raw cov ntaub ntawv. Tom qab qhov sib ntxiv thiab cov tshuaj tiv thaiv polycondensation, ib qho loj polymer nrog ib qho kev kawm ntawm polymerization thaum kawg tsim, thiab nws cov dej txo qis tuaj yeem ncav cuag 30 feem pua. Tus nqi yog siab, thiab nws yooj yim los ntshav. Nws yog feem ntau siv ua ke nrog naphthalene-based superplasticizers, uas tuaj yeem daws qhov teeb meem ntawm kev sib raug zoo ntawm naphthalene-based superplasticizers thiab cement.
Sulfamate superplasticizer yog monocyclic aromatic hydrocarbon superplasticizer, feem ntau yog tsim los ntawm p-aminobenzenesulfonic acid, monocyclic aromatic hydrocarbon derivatives.
Phenolic tebchaw thiab formaldehyde yog rhuab thiab condensed nyob rau hauv acidic los yog alkaline tej yam kev mob. Cov qauv molecular ntawm sulfamic acid superplasticizer yog qhov nyuaj, thiab cov monomers sib txawv yuav muaj cov qauv molecular sib txawv.
Txoj kev npaj: Cov txheej txheem synthesis yog hloov kho cov sulfamate dej reducer los ntawm polycondensation ntawm sulfamate dej txo tus neeg sawv cev thiab polyoxyolefin tebchaw los yog catalytic grafting nrog rau lwm cov tebchaw, xws li lignosulfonate, thiab lwm yam. Cov sulfamate dej-txo tus neeg saib xyuas hloov los ntawm polycondensation nrog polyoxyolefin tebchaw sib xyaw ua ke. Qhov zoo ntawm ob hom dej-txo cov neeg ua haujlwm ntawm polycarboxylic acid thiab sulfamic acid, thiab muaj kev ua haujlwm zoo thiab muaj zog thaum ntxov, tab sis tus nqi ntawm cov khoom siv raw yog siab heev. Tus nqi kim thiab ntau lawm.
Kev hloov pauv hloov pauv ntawm lignosulfonate thiab sulfamic acid-based superplasticizer tuaj yeem txo cov nqi tsim khoom thiab txhim kho kev sib cais thiab los ntshav tshwm sim ntawm sulfamic acid-based superplasticizer. Xws li: Yang Dongjie et al. nqa tawm graft copolymerization nrog sulfamic acid-raws li superplasticizer thiab lignosulfonate, thiab synthesized hloov kho sulfamic acid-based superplasticizer ASM, uas txo cov sulfamic acid-based superplasticizer. Nyob rau tib lub sijhawm, nrog tib koob tshuaj sulfamic acid superplasticizer, cov ntshav los txo qis thiab cov dej txo qis tau zoo dua. Cov pob zeb sib xyaw nrog SAM tau mus txog qhov muaj zog ua vaj tse nyob rau hauv cov nqe lus ntawm slump poob thiab compressive zog. kev xav tau.