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首页> 外文期刊>Journal of Applied Polymer Science >Water-soluble sulfonated phenolic resins. III. Effects of degree of sulfonation and molecular weight on concrete workability
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Water-soluble sulfonated phenolic resins. III. Effects of degree of sulfonation and molecular weight on concrete workability

机译：水溶性磺化酚醛树脂。三，磺化度和分子量对混凝土工作性能的影响

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摘要

The effects of the degree of sulfonation (DS) and molecular weight (MW) of sulfonated phenolic resins (SPF) on the flow properties of cementitious materials were investigated. SPF resin was prepared from phenol, formaldehyde, and sodium bisulfite through a four-step reaction. It was found that an increase in either DS or MW would enhance the dispersion effects in the system. The results indicate that the fluidity of cement pastes and the workability of concrete increased with higher DS until the resin was fully sulfonated, For resins with sufficient sulfonation, the performance of cementitious materials would increase with increasing MW. Apparently, resins with MW of about 3 x 10(4) are most effective in promoting concrete properties in terms of workability and compressive strength. (C) 2000 John Wiley & Sons, Inc. [References: 16]
机译：研究了磺化酚醛树脂（SPF）的磺化度（DS）和分子量（MW）对胶凝材料流动性能的影响。 SPF树脂由苯酚，甲醛和亚硫酸氢钠通过四步反应制备。发现DS或MW的增加将增强系统中的分散效果。结果表明，直到DS被完全磺化，水泥浆的流动性和混凝土的可加工性都随着DS的增加而增加。对于具有足够磺化的树脂，水泥材料的性能会随着MW的增加而增加。显然，MW约为3 x 10（4）的树脂在可加工性和抗压强度方面最有效地提高了混凝土的性能。 （C）2000 John Wiley＆Sons，Inc. [参考：16]

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