Txoj kev synthesis ntawmnaphthalene high efficiency dej txo tus neeg sawv cev:

(1).Naphthalene yog sulfonated ntawm qhov kub thiab txias (160 ~ 165 ℃), feem ntau tsim β-naphthalene sulfonic acid, tab sis kuj muaj me me ntawm lwm cov naphthalene sulfonic acid;

(2).Ntxiv dej kom α-naphthalene sulfonic acid hydrolyze tawm, ua rau β-naphthalene sulfonic acid cov ntsiab lus nce;

(3).β-naphthalene sulfonic acid thiab formaldehyde condensation;

(4) Neutralization.

Kev siv technology ntawmnaphthalene high efficiency dej txo tus neeg sawv cev:

1.Lub zog thaum ntxov thiab siab zog pob zeb yog npaj.Thaum sib tov 0.5% ~ 1%naphthalene high efficiency dej txo tus neeg sawv cevRaws li qhov hnyav ntawm cov cement, cov dej tuaj yeem raug txo los ntawm 16% ~ 25%, thiab cov pob zeb sib xyaw ua ke tuaj yeem nce los ntawm 20% ~ 50% (lub zog thaum ntxov ntawm cov pob zeb yog nce ntxiv).
2.Qhov kev npaj ntawm cov dej ntws loj, thaum lubnaphthalene high efficiency dej txo tus neeg sawv cevrau cov cement ntau npaum li cas ntawm 0.2% ~ 0.5%, lub zog ntawm cov pob zeb tseem tsis hloov pauv, tuaj yeem nce qhov poob ntawm cov pob zeb mus rau 10 ~ 25cm, siv rau grouting grouting, siv cov pob zeb, tuaj yeem txhim kho kev tsim kho, txhim kho kev tsim kho kom zoo.
3.ave cement, nyob rau hauv cov xwm txheej ntawm kev tuav lub zog ntawm pob zeb tsis poob, ntxiv txog 0.5%naphthalene dej txo tus neeg saib xyuastuaj yeem txuag cement li 20%.