Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Water retention type polycarboxylic acid water reducer and preparation method thereof
The invention relates to a water-retaining polycarboxylic acid water reducer, which is prepared from the following raw materials in parts by weight: 300 to 400 parts of polyether macromonomer, 5 to 20 parts of unsaturated water-retaining functional monomer, 25 to 50 parts of unsaturated acid, 2 to 8 parts of oxidizing agent, 0.8 to 2.0 parts of chain transfer agent, 0.1 to 1.0 part of reducing agent, 300 to 760 parts of water and 5 to 20 parts of alkali liquor, the unsaturated water retention type functional monomer is prepared from the following raw materials in parts by weight: 20 to 30 parts of konjac glucomannan, 2 to 20 parts of maleic anhydride, 0.2 to 0.5 part of catalyst and 200 parts of water; the structural general formula of the konjac glucomannan is (C6H10O5) n, wherein n is 2-10. Konjac glucomannan is introduced into a molecular chain of the water-retaining polycarboxylate superplasticizer, so that the prepared water-retaining polycarboxylate superplasticizer is good in water-reducing rate, water-retaining property and mud resistance, and the workability of concrete can be effectively improved.
本发明涉及一种保水型聚羧酸减水剂，按重量份数计，包括以下原料：300～400份聚醚大单体、5～20份不饱和保水型功能单体、25～50份不饱和酸、2～8份氧化剂、0.8～2.0份链转移剂、0.1～1.0份还原剂、300～760份水、以及5～20份碱液；所述不饱和保水型功能单体的原料，按重量份数计，20～30份魔芋葡甘低聚糖、2～20份马来酸酐、0.2～0.5份催化剂、200份水；所述魔芋葡甘低聚糖的结构通式为(C6H10O5)n，n为2～10。本发明的保水型聚羧酸减水剂的分子链中引入魔芋葡甘低聚糖，制备得到的保水型聚羧酸减水剂的减水率、保水性、抗泥性能良好，能有效改善混凝土和易性。
Water retention type polycarboxylic acid water reducer and preparation method thereof
The invention relates to a water-retaining polycarboxylic acid water reducer, which is prepared from the following raw materials in parts by weight: 300 to 400 parts of polyether macromonomer, 5 to 20 parts of unsaturated water-retaining functional monomer, 25 to 50 parts of unsaturated acid, 2 to 8 parts of oxidizing agent, 0.8 to 2.0 parts of chain transfer agent, 0.1 to 1.0 part of reducing agent, 300 to 760 parts of water and 5 to 20 parts of alkali liquor, the unsaturated water retention type functional monomer is prepared from the following raw materials in parts by weight: 20 to 30 parts of konjac glucomannan, 2 to 20 parts of maleic anhydride, 0.2 to 0.5 part of catalyst and 200 parts of water; the structural general formula of the konjac glucomannan is (C6H10O5) n, wherein n is 2-10. Konjac glucomannan is introduced into a molecular chain of the water-retaining polycarboxylate superplasticizer, so that the prepared water-retaining polycarboxylate superplasticizer is good in water-reducing rate, water-retaining property and mud resistance, and the workability of concrete can be effectively improved.
本发明涉及一种保水型聚羧酸减水剂，按重量份数计，包括以下原料：300～400份聚醚大单体、5～20份不饱和保水型功能单体、25～50份不饱和酸、2～8份氧化剂、0.8～2.0份链转移剂、0.1～1.0份还原剂、300～760份水、以及5～20份碱液；所述不饱和保水型功能单体的原料，按重量份数计，20～30份魔芋葡甘低聚糖、2～20份马来酸酐、0.2～0.5份催化剂、200份水；所述魔芋葡甘低聚糖的结构通式为(C6H10O5)n，n为2～10。本发明的保水型聚羧酸减水剂的分子链中引入魔芋葡甘低聚糖，制备得到的保水型聚羧酸减水剂的减水率、保水性、抗泥性能良好，能有效改善混凝土和易性。
Water retention type polycarboxylic acid water reducer and preparation method thereof
一种保水型聚羧酸减水剂及其制备方法
ZHU YANJIAO (Autor:in) / XIONG HAONAN (Autor:in) / SHEN CONGCONG (Autor:in) / ZHU QIAOYONG (Autor:in) / ZHU GEHONG (Autor:in) / JIANG ZHUOJUN (Autor:in) / XU YEQING (Autor:in) / HONG JIAN (Autor:in) / WU CHENGJUN (Autor:in)
05.01.2024
Patent
Elektronische Ressource
Chinesisch
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