Lub ntsiab hom ntawm high-efficiency dej txo tus neeg sawv cev

Cov dej txo tus nqi ntawm cov dej-txo cov neeg ua haujlwm siab tuaj yeem ncav cuag ntau dua 20%. Feem ntau yog naphthalene series, melamine series thiab dej-txo cov neeg ua hauj lwm compounded los ntawm lawv, ntawm uas naphthalene series yog lub ntsiab, accounting rau 67%. Tshwj xeeb tshaj yog nyob rau hauv kuv lub teb chaws, feem ntau ntawm cov high-efficiency dej-txo cov neeg ua hauj yog naphthalene-raws li high-efficiency dej-txo cov neeg ua hauj nrog naphthalene ua raw khoom. Naphthalene series superplasticizers tuaj yeem muab faib ua cov khoom siv siab (Na2SO4 cov ntsiab lus<3%), medium-concentration products (Na2SO4 content 3% to 10%) and low-concentration products (Na2SO4 content) according to the Na2SO4 content in their products. Content>10%). Feem ntau cov naphthalene-raws li high-efficiency superplasticizer synthesis nroj tsuag muaj peev xwm tswj tau cov Na2SO4 cov ntsiab lus hauv qab 3%, thiab qee lub tuam txhab tshaj lij tuaj yeem tswj tau qis dua 0.4%.
Naphthalene-raws li dej-txo cov neeg ua haujlwm yog cov khoom siv ntau tshaj plaws thiab siv dav hauv cov dej-txo cov neeg ua haujlwm hauv kuv lub teb chaws (sau ntau dua 70% ntawm cov tshuaj txo cov dej). Lawv yog cov cwj pwm los ntawm kev txo cov dej siab (15% mus rau 25%) thiab tsis muaj cua nkag. , muaj kev cuam tshuam me ntsis rau lub sijhawm teeb tsa, muaj qhov hloov tau zoo rau cov cement, tuaj yeem siv ua ke nrog ntau yam khoom siv ntxiv, thiab kuj pheej yig. Naphthalene-raws li superplasticizers feem ntau yog siv los npaj cov kua dej ntau, lub zog siab, thiab kev ua haujlwm siab. Kev poob qis ntawm cov pob zeb yooj yim sib xyaw nrog naphthalene-based superplasticizer sai dua. Tsis tas li ntawd, kev hloov pauv ntawm naphthalene-raws li dej txo cov neeg ua haujlwm rau qee cov cements yuav tsum tau txhim kho.