Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mud-resistant polycarboxylate superplasticizer
The invention discloses a mud-resistant polycarboxylate superplasticizer, which is prepared by the following steps: S1, in a round-bottom flask equipped with an electric stirrer, a thermometer, a liquid dropping device and a reflux condensing tube, adding 200 parts of soft water into the round-bottom flask as bottom water; s2, pouring 60 parts of a polymeric monomer, 3 parts of a polymerization initiator, 5 parts of a molecular weight regulator, 20 parts of a micromolecular anti-mud agent, 10 parts of hydrogen peroxide and 6 parts of a chain transfer agent into a round-bottom flask to obtain an anti-mud polycarboxylic acid water reducer mother solution; s3, 25 parts of an air entraining agent and 15 parts of a retarder are added into the mud-resistant polycarboxylic acid water reducer mother liquor, a proper amount of sodium hydroxide is added, and the PH value of the solution in the whole device is made to be 7; and S4, adding 10 parts of a sacrificial agent, fully reacting, cooling in a water bath, separating out crystals, and discharging. The water reducing agent can adapt to gravel aggregate with the mud content not exceeding 10%, and has good dispersing and water reducing effects under the condition of a proper mixing amount, so that concrete has good workability.
本发明公开了一种抗泥型聚羧酸减水剂，制备步骤如下：S1：在配有电动搅拌器、温度计、滴液装置、以及回流冷凝管的圆底烧瓶中，将200份的软水投入圆底烧瓶作为底水；S2：将60份聚合单体、3份聚合引发剂、5份分子量调节剂、20份小分子抗泥剂、10份过氧化氢和6份链转移剂倒入圆底烧瓶内，得到抗泥型聚羧酸减水剂母液；S3：在抗泥型聚羧酸减水剂母液内加入25份引气剂和15份缓凝剂，加入适量的氢氧化钠，使整体装置内溶液PH值为7；S4：加入10份牺牲剂，使其充分反应，水浴降温，析出晶体，出料。本发明能适应泥含量不超过10％的砂石骨料，在适当掺量下具有良好的分散减水效果，使混凝土具有良好的和易性。
Mud-resistant polycarboxylate superplasticizer
The invention discloses a mud-resistant polycarboxylate superplasticizer, which is prepared by the following steps: S1, in a round-bottom flask equipped with an electric stirrer, a thermometer, a liquid dropping device and a reflux condensing tube, adding 200 parts of soft water into the round-bottom flask as bottom water; s2, pouring 60 parts of a polymeric monomer, 3 parts of a polymerization initiator, 5 parts of a molecular weight regulator, 20 parts of a micromolecular anti-mud agent, 10 parts of hydrogen peroxide and 6 parts of a chain transfer agent into a round-bottom flask to obtain an anti-mud polycarboxylic acid water reducer mother solution; s3, 25 parts of an air entraining agent and 15 parts of a retarder are added into the mud-resistant polycarboxylic acid water reducer mother liquor, a proper amount of sodium hydroxide is added, and the PH value of the solution in the whole device is made to be 7; and S4, adding 10 parts of a sacrificial agent, fully reacting, cooling in a water bath, separating out crystals, and discharging. The water reducing agent can adapt to gravel aggregate with the mud content not exceeding 10%, and has good dispersing and water reducing effects under the condition of a proper mixing amount, so that concrete has good workability.
本发明公开了一种抗泥型聚羧酸减水剂，制备步骤如下：S1：在配有电动搅拌器、温度计、滴液装置、以及回流冷凝管的圆底烧瓶中，将200份的软水投入圆底烧瓶作为底水；S2：将60份聚合单体、3份聚合引发剂、5份分子量调节剂、20份小分子抗泥剂、10份过氧化氢和6份链转移剂倒入圆底烧瓶内，得到抗泥型聚羧酸减水剂母液；S3：在抗泥型聚羧酸减水剂母液内加入25份引气剂和15份缓凝剂，加入适量的氢氧化钠，使整体装置内溶液PH值为7；S4：加入10份牺牲剂，使其充分反应，水浴降温，析出晶体，出料。本发明能适应泥含量不超过10％的砂石骨料，在适当掺量下具有良好的分散减水效果，使混凝土具有良好的和易性。
Mud-resistant polycarboxylate superplasticizer
抗泥型聚羧酸减水剂
LI JIE (Autor:in) / ZHU XINRONG (Autor:in) / ZHANG JIE (Autor:in) / CHANG LILI (Autor:in) / LI XIANWU (Autor:in) / WANG JINSHUI (Autor:in)
17.03.2023
Patent
Elektronische Ressource
Chinesisch
Amphoteric mud-resistant polycarboxylate superplasticizer
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