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A platform for research: civil engineering, architecture and urbanism
Efficient mortar plasticizer and preparation method thereof
The invention discloses an efficient mortar plasticizer and a preparation method thereof. The high-efficiency mortar plasticizer comprises the following components in parts by weight: 2-10 parts of sodium gluconate, 2-10 parts of a polycarboxylic acid high-efficiency water reducing agent, 0.5-5 parts of cellulose ether, 0.1-2 parts of an air entraining agent, 0.1-2 parts of starch ether and 71-96parts of water. The polycarboxylate superplasticizer disclosed by the invention can be gradually hydrolyzed in an alkaline environment of concrete to release part of carboxylic acid groups with a dispersion effect, so that the prepared mortar plasticizer has a better plasticity-maintaining effect; besides, acrylamide monomers are introduced through the water reducing agent and have-CN-groups, so that the steric hindrance effect of molecular branched chains of the mortar plasticizer is enhanced, and the mortar plasticizer has a good plastic retaining effect.
本发明公开了一种高效砂浆增塑剂及其制备方法，高效砂浆增塑剂按重量份数包括葡萄糖酸钠2‑10份、聚羧酸高效减水剂2‑10份、纤维素醚0.5‑5份、引气剂0.1‑2份、淀粉醚0.1‑2份、水71‑96份，本发明聚羧酸高效减水剂在混凝土的碱性环境下还会逐渐水解释放出部分具有分散效果的羧酸基团，使得制备砂浆增塑剂具有更好的保塑效果；通过减水剂引入丙烯酰胺类单体，其具有‑CN‑基团，使得砂浆增塑剂分子支链的空间位阻效应得到增强，具有较好的保塑效果。
Efficient mortar plasticizer and preparation method thereof
The invention discloses an efficient mortar plasticizer and a preparation method thereof. The high-efficiency mortar plasticizer comprises the following components in parts by weight: 2-10 parts of sodium gluconate, 2-10 parts of a polycarboxylic acid high-efficiency water reducing agent, 0.5-5 parts of cellulose ether, 0.1-2 parts of an air entraining agent, 0.1-2 parts of starch ether and 71-96parts of water. The polycarboxylate superplasticizer disclosed by the invention can be gradually hydrolyzed in an alkaline environment of concrete to release part of carboxylic acid groups with a dispersion effect, so that the prepared mortar plasticizer has a better plasticity-maintaining effect; besides, acrylamide monomers are introduced through the water reducing agent and have-CN-groups, so that the steric hindrance effect of molecular branched chains of the mortar plasticizer is enhanced, and the mortar plasticizer has a good plastic retaining effect.
本发明公开了一种高效砂浆增塑剂及其制备方法，高效砂浆增塑剂按重量份数包括葡萄糖酸钠2‑10份、聚羧酸高效减水剂2‑10份、纤维素醚0.5‑5份、引气剂0.1‑2份、淀粉醚0.1‑2份、水71‑96份，本发明聚羧酸高效减水剂在混凝土的碱性环境下还会逐渐水解释放出部分具有分散效果的羧酸基团，使得制备砂浆增塑剂具有更好的保塑效果；通过减水剂引入丙烯酰胺类单体，其具有‑CN‑基团，使得砂浆增塑剂分子支链的空间位阻效应得到增强，具有较好的保塑效果。
Efficient mortar plasticizer and preparation method thereof
一种高效砂浆增塑剂及其制备方法
GONG DANDAN (author) / WU YANG (author)
2020-10-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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