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首页> 外文期刊>Journal of Applied Polymer Science >Interaction of silylated superplasticizers with cementitious materials
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Interaction of silylated superplasticizers with cementitious materials

机译：甲硅烷基化高效减水剂与胶凝材料的相互作用

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Incorporation of silane groups into polycarboxylate superplasticizer (PCE) opens a new technical approach to improve properties of PCE, such as to enhance the adsorption of PCE on cement and hence the dispersing performance, to minimize the retardation effect, and potentially to increase mechanical strength of cement mortars. Silylated PCEs were synthesized using silane monomer via radical copolymerization. Dispersing effect, adsorption behaviors, and influences on mortar strength of these polymers were systematically investigated. Results show that increasing the incorporation of sliane groups in PCE promotes the adsorption of polymer on cement surface and hence leads to good fluidity retention capability. Furthermore, sulfate resistance ability of silylated PCE is superior due to stronger chemical adsorption of polymer on cement surface. The retardation effect of PCE is minimized by the introduction of silane groups. The addition of silylated PCE significantly increases 3days compressive strength without notably affecting the long-term strength. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44161.
机译：将硅烷基团引入聚羧酸类高效减水剂（PCE）中，为改善PCE的性能开辟了一种新的技术途径，例如，增强PCE在水泥上的吸附，从而提高其分散性能，最大程度地降低缓凝效果，并有可能提高其机械强度。水泥砂浆。使用硅烷单体通过自由基共聚合成硅烷化的PCE。系统地研究了这些聚合物的分散效果，吸附行为以及对砂浆强度的影响。结果表明，增加PCE中的sliane基团的掺入量可促进聚合物在水泥表面的吸附，从而导致良好的流动性保持能力。此外，由于聚合物在水泥表面上的较强化学吸附，甲硅烷基化的PCE的抗硫酸盐能力更强。通过引入硅烷基团可将PCE的阻滞作用降至最低。甲硅烷基化PCE的添加可显着提高3天抗压强度，而不会显着影响长期强度。 （c）2016 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，44161。

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