Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of modified ether polycarboxylic acid water reducer
The invention discloses a preparation method of a modified ether polycarboxylic acid water reducer, and relates to the technical field of building materials, and the preparation method comprises the following steps: preparing a mixed solution A: mixing acrylic acid AA, TPEG-SAA-SHES and distilled water according to a mass ratio of 1: (6-8): (6-10); preparing a mixed solution B; and synthesizing the modified ether polycarboxylic acid water reducer. TPEG-2400 is modified through SAA and SHES, a novel modified ether polycarboxylic acid water reducing agent monomer TSS is synthesized, a functional monomer with a sulfonic acid group is introduced into PCE, and various properties of the polycarboxylic acid water reducing agent on cement are improved by increasing the density of an ester group. After the prepared water reducing agent is applied to cement, the cement fluidity and the cement particle adsorption capacity are obviously improved; meanwhile, after the TSS monomer is added, the PCE-S can better promote formation of C-S-H gel, more calcium hydroxide products are generated, cement hydration is promoted, cement hydration can be faster promoted, the early strength of the cement is better, and the early strength performance of the cement is improved.
本申请公开一种改性醚类聚羧酸系减水剂的制备方法，涉及建筑材料技术领域，包括：制备混合溶液A:将丙烯酸AA、TPEG‑SAA‑SHES和蒸馏水按照质量比1:6‑8:6‑10混合；制备混合溶液B；合成改性醚类聚羧酸系减水剂。本发明通过SAA和SHES对TPEG‑2400进行改性，合成一种新型的改性醚类聚羧酸减水剂单体TSS，为PCE中引入具有磺酸基团的功能单体，并增加酯基密度来改善聚羧酸减水剂对水泥的各项性。制备的减水剂应用于水泥后，水泥流动性和水泥颗粒的吸附能力得到明显的提高；同时加入TSS单体后，PCE‑S能更好的促进C‑S‑H凝胶的形成，产生更多的氢氧化钙产物，促进的水泥水化，能更快的促进水泥水化，使得水泥早期强度更好，提升水泥的早强性能。
Preparation method of modified ether polycarboxylic acid water reducer
The invention discloses a preparation method of a modified ether polycarboxylic acid water reducer, and relates to the technical field of building materials, and the preparation method comprises the following steps: preparing a mixed solution A: mixing acrylic acid AA, TPEG-SAA-SHES and distilled water according to a mass ratio of 1: (6-8): (6-10); preparing a mixed solution B; and synthesizing the modified ether polycarboxylic acid water reducer. TPEG-2400 is modified through SAA and SHES, a novel modified ether polycarboxylic acid water reducing agent monomer TSS is synthesized, a functional monomer with a sulfonic acid group is introduced into PCE, and various properties of the polycarboxylic acid water reducing agent on cement are improved by increasing the density of an ester group. After the prepared water reducing agent is applied to cement, the cement fluidity and the cement particle adsorption capacity are obviously improved; meanwhile, after the TSS monomer is added, the PCE-S can better promote formation of C-S-H gel, more calcium hydroxide products are generated, cement hydration is promoted, cement hydration can be faster promoted, the early strength of the cement is better, and the early strength performance of the cement is improved.
本申请公开一种改性醚类聚羧酸系减水剂的制备方法，涉及建筑材料技术领域，包括：制备混合溶液A:将丙烯酸AA、TPEG‑SAA‑SHES和蒸馏水按照质量比1:6‑8:6‑10混合；制备混合溶液B；合成改性醚类聚羧酸系减水剂。本发明通过SAA和SHES对TPEG‑2400进行改性，合成一种新型的改性醚类聚羧酸减水剂单体TSS，为PCE中引入具有磺酸基团的功能单体，并增加酯基密度来改善聚羧酸减水剂对水泥的各项性。制备的减水剂应用于水泥后，水泥流动性和水泥颗粒的吸附能力得到明显的提高；同时加入TSS单体后，PCE‑S能更好的促进C‑S‑H凝胶的形成，产生更多的氢氧化钙产物，促进的水泥水化，能更快的促进水泥水化，使得水泥早期强度更好，提升水泥的早强性能。
Preparation method of modified ether polycarboxylic acid water reducer
一种改性醚类聚羧酸系减水剂的制备方法
LAN CHANGSHENG (Autor:in) / PAN HAIWEI (Autor:in) / LI ZHEN (Autor:in) / JIA XUELI (Autor:in) / LI JIAJING (Autor:in)
11.10.2024
Patent
Elektronische Ressource
Chinesisch
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