A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Water reducing agent and preparation method thereof
The invention relates to a water reducing agent, which is prepared from the following raw materials in parts by weight: 150 to 180 parts of polyether monomer; 5-10 parts of a mud sensitive monomer; 15 to 20 parts of unsaturated acid monomer; and 1-1.5 parts of an initiator. The mud-sensitive monomer is introduced into the water reducer, and a cationic active group (phosphate group) on a side chain of the mud-sensitive monomer can inhibit expansion of clay impurities, so that the intercalation distance of the clay impurities is reduced, and an intercalation space cannot be provided for a PEO side chain in the water reducer, so that the water reducer cannot enter clay and cannot preferentially adsorb the clay; therefore, the dispersing performance of the water reducing agent is greatly improved, and the problem that the water reducing agent is sensitive to the mud content is solved.
本发明涉及一种减水剂，以重量份数计，减水剂的制备原料包括：聚醚单150‑180份；泥敏性单体5‑10份；不饱和酸单体15‑20份；引发剂1‑1.5份。本发明在减水剂中引入泥敏性单体，由于泥敏性单体侧链上的阳离子活性基团(磷酸基团)会抑制黏土杂质的膨胀，使得黏土杂质插层的间距变小，不足以为减水剂中的PEO侧链提供插层空间，因此减水剂无法进入黏土内部，无法对黏土优先吸附，从而吸附在水泥颗粒表面，大大提高了减水剂的分散性能，解决了减水剂对含泥量敏感的问题。
Water reducing agent and preparation method thereof
The invention relates to a water reducing agent, which is prepared from the following raw materials in parts by weight: 150 to 180 parts of polyether monomer; 5-10 parts of a mud sensitive monomer; 15 to 20 parts of unsaturated acid monomer; and 1-1.5 parts of an initiator. The mud-sensitive monomer is introduced into the water reducer, and a cationic active group (phosphate group) on a side chain of the mud-sensitive monomer can inhibit expansion of clay impurities, so that the intercalation distance of the clay impurities is reduced, and an intercalation space cannot be provided for a PEO side chain in the water reducer, so that the water reducer cannot enter clay and cannot preferentially adsorb the clay; therefore, the dispersing performance of the water reducing agent is greatly improved, and the problem that the water reducing agent is sensitive to the mud content is solved.
本发明涉及一种减水剂，以重量份数计，减水剂的制备原料包括：聚醚单150‑180份；泥敏性单体5‑10份；不饱和酸单体15‑20份；引发剂1‑1.5份。本发明在减水剂中引入泥敏性单体，由于泥敏性单体侧链上的阳离子活性基团(磷酸基团)会抑制黏土杂质的膨胀，使得黏土杂质插层的间距变小，不足以为减水剂中的PEO侧链提供插层空间，因此减水剂无法进入黏土内部，无法对黏土优先吸附，从而吸附在水泥颗粒表面，大大提高了减水剂的分散性能，解决了减水剂对含泥量敏感的问题。
Water reducing agent and preparation method thereof
一种减水剂及其制备方法
LIN YANMEI (author) / FANG YUNHUI (author) / ZHU SHAOHONG (author) / CHEN ZHANHUA (author) / ZHANG XIAOFANG (author) / LIN ZHIJUN (author)
2022-11-29
Patent
Electronic Resource
Chinese
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