Polycarboxylate Superplasticizer PCEyog tsim los ntawm macromolecular tebchaw nrog sulfonic acid pawg, carboxyl pawg, amino pawg, thiab polyoxyethylene sab chains, thiab lwm yam, nyob rau hauv aqueous tov, los ntawm lub hauv paus ntsiab lus ntawm dawb radical copolymerization synthesis ntawm polymers nrog ib tug zuag qauv Surfactant.

Lub ntsiab raw khoom xav tau rau lub synthesis ntawmKev tsim kho tshuaj Dej reducer Polycarboxylate Superplasticieryog: methacrylic acid, acrylic acid, ethyl acrylate, hydroxyethyl acrylate, sodium allyl sulfonate, methyl methacrylate, 2-acrylamido- 2-Methacrylic acid, methoxy polyoxyethylene methacrylate, ethoxy polyethylene glycol acrylate, thiab lwm yam. nyob rau hauv cov txheej txheem polymerization yog: persulfate-raws li pib, Benzoyl peroxide, azobisisobutyl cyanide; saw hloov cov neeg sawv cev: 3-mercaptopropionic acid, mercaptoacetic acid, thiab lwm yam.

Polycarboxylic acid dej txo tus neeg sawv cev Cov txheej txheem synthesis yog: nyob rau hauv ib puag ncig hauv qab lub khob nruab nrog lub tshuab hluav taws xob, lub ntsuas kub, lub ntsuas hluav taws xob, thiab lub reflux condenser, cov tshuaj polymerization monomer thiab cov tshuaj pib maj mam ntxiv dropwise los ntawm txoj kev cua sov hauv chav da dej. Thaum xaiv cov polymerization monomer , Lub tsev kawm ntawv nrog nws cov kev sib tw yuav tsum tau txiav txim siab tag nrho. Cov tshuaj tiv thaiv kub tuaj yeem txiav txim siab raws li cov tshuaj tiv thaiv monomer hom. Feem ntau, qhov kub ntawm qhov kub ntawm 70 ~ 95 ℃ tuaj yeem xaiv raws li qhov ntsuas kub.

Muab cov tshuaj monomer tso rau hauv ib teev, thiab tom qab ntawd muab tso rau hauv 20 feeb ntxiv cov kev daws teeb meem ntxiv, thiab thaum kawg nce qhov kub ntawm 5 ° C, txuas ntxiv cov tshuaj tiv thaiv rau 1h, thiab tom qab qhov kub thiab txias qis dua 40 ° C, neutralize thiab tso tawm.