磺化三聚氰胺脲醛树脂合成工艺的研究

磺化三聚氰胺脲醛树脂合成工艺的研究

TQ323.3; 研究了引入尿素含量较高的条件下,磺化三聚氰胺脲醛树脂(SMUF)的合成工艺影响因素及作为混凝土超塑化剂的应用性能.结果表明SMUF的优化合成条件为:n(甲醛)∶n(硫酸)∶n(三聚氰胺)∶n(尿素) =6∶2∶1∶1, 羟甲基化、磺化、酸段缩合、碱性重整4个阶段的反应温度均为80℃,酸段缩聚反应阶段pH为4.5,时间为90 min.合成的SMUF树脂在用量0.5%时,混凝土的减水率可达20%.该工艺与SMF树脂合成相比,原料成本降低35%....

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Veröffentlicht in:现代化工 2002, Vol.22 (6), p.24-27
Hauptverfasser: 邱学青, 易聪华, 杨东杰, 欧阳新平
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container_end_page 27
container_issue 6
container_start_page 24
container_title 现代化工
container_volume 22
creator 邱学青
易聪华
杨东杰
欧阳新平
description TQ323.3; 研究了引入尿素含量较高的条件下,磺化三聚氰胺脲醛树脂(SMUF)的合成工艺影响因素及作为混凝土超塑化剂的应用性能.结果表明SMUF的优化合成条件为:n(甲醛)∶n(硫酸)∶n(三聚氰胺)∶n(尿素) =6∶2∶1∶1, 羟甲基化、磺化、酸段缩合、碱性重整4个阶段的反应温度均为80℃,酸段缩聚反应阶段pH为4.5,时间为90 min.合成的SMUF树脂在用量0.5%时,混凝土的减水率可达20%.该工艺与SMF树脂合成相比,原料成本降低35%.
doi_str_mv 10.3321/j.issn:0253-4320.2002.06.006
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title 磺化三聚氰胺脲醛树脂合成工艺的研究
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