本文選題：三聚氰胺減水劑　切入點(diǎn)：改性　出處：《新型建筑材料》2017年09期

【摘要】：根據(jù)三聚氰胺減水劑合成機(jī)理,以三聚氰胺、甲醛、氫氧化鈉、濃硫酸、乙二醇為原料,合成WS-SM型三聚氰胺減水劑。試驗(yàn)結(jié)果表明,當(dāng)n(磺酸基)∶n(三聚氰胺)∶n(甲醛)=2.0∶1.0∶3.5,磺化溫度穩(wěn)定在90℃,p H值控制在12;縮合溫度控制在60℃,p H值控制在5左右時(shí),合成的三聚氰胺減水劑分散性最佳。此工藝合成的三聚氰胺減水劑在減水率、存放時(shí)間、相容性、性能的穩(wěn)定性優(yōu)于市售同類減水劑。
[Abstract]:According to the synthesis mechanism of melamine water reducer, WS-SM melamine water reducer was synthesized from melamine, formaldehyde, sodium hydroxide, concentrated sulfuric acid and ethylene glycol.The experimental results show that when n (sulfonic acid): n (formaldehyde 2.0: 1.0: 3.5), the sulfonation temperature is stabilized at 90 鈩，

本文編號：1728628