A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation process and application of sodium sulfanilate-sulfonated acetone-formaldehyde condensate superplasticizer
The invention provides a preparation process and application of a sodium p-aminobenzene sulfonate-sulfonated acetone-formaldehyde condensate high-efficiency water reducing agent material, a large number of hydroxyl bad sulfonic acid groups are introduced into the prepared water reducing agent, the cohesiveness of the water reducing agent is enhanced, the water reducing agent has good dispersion and water retention effects, the water retention rate of concrete is increased, and the water-retaining property of the concrete is improved. The water reducing agent possibly has a certain air entraining effect and is beneficial to reducing water evaporation and bleeding, so that the cracking area is reduced; and on the other hand, the molecular structure of the sodium sulfanilate-sulfonated acetone-formaldehyde condensate superplasticizer is changed to form a relatively large steric hindrance effect, so that the dispersing performance of the superplasticizer on cement is enhanced, relatively small gel patterns formed by a hydration reaction of cement particles cannot be mutually gathered, and in the time period, the cement particles can be effectively dispersed in the cement particles. The hydration reaction enables the rigid structure of the mixture to be further formed, the plastic deformation of the concrete is effectively controlled, the plastic tensile strength of the concrete is enhanced, and the plastic resistance is facilitated.
本发明提供了一种对氨基苯磺酸钠－磺化丙酮－甲醛缩合物高效减水剂材料制备工艺及其应用，其中本发明所制备的减水剂中引入了大量的羟基坏人磺酸基团，减水剂的粘聚性增强，具有良好的分散保水作用，提高了混凝土的保水率，并且减水剂可能有一定的引气作用，有利于降低水分蒸发和泌水，故开裂面积减少；另一方面，由于对氨基苯磺酸钠－磺化丙酮－甲醛缩合物高效减水剂分子结构发生改变，形成较大的空间位阻效应，使其对水泥的分散性能增强，水泥颗粒水化反应形成的较小凝胶图案不能互相聚集，且在这一时间段内，水化反应使拌合物刚性结构进一步形成，混凝土塑性变形得到了有效控制，增强了混凝土的塑性抗拉强度，对抵抗塑性有利。
Preparation process and application of sodium sulfanilate-sulfonated acetone-formaldehyde condensate superplasticizer
The invention provides a preparation process and application of a sodium p-aminobenzene sulfonate-sulfonated acetone-formaldehyde condensate high-efficiency water reducing agent material, a large number of hydroxyl bad sulfonic acid groups are introduced into the prepared water reducing agent, the cohesiveness of the water reducing agent is enhanced, the water reducing agent has good dispersion and water retention effects, the water retention rate of concrete is increased, and the water-retaining property of the concrete is improved. The water reducing agent possibly has a certain air entraining effect and is beneficial to reducing water evaporation and bleeding, so that the cracking area is reduced; and on the other hand, the molecular structure of the sodium sulfanilate-sulfonated acetone-formaldehyde condensate superplasticizer is changed to form a relatively large steric hindrance effect, so that the dispersing performance of the superplasticizer on cement is enhanced, relatively small gel patterns formed by a hydration reaction of cement particles cannot be mutually gathered, and in the time period, the cement particles can be effectively dispersed in the cement particles. The hydration reaction enables the rigid structure of the mixture to be further formed, the plastic deformation of the concrete is effectively controlled, the plastic tensile strength of the concrete is enhanced, and the plastic resistance is facilitated.
本发明提供了一种对氨基苯磺酸钠－磺化丙酮－甲醛缩合物高效减水剂材料制备工艺及其应用，其中本发明所制备的减水剂中引入了大量的羟基坏人磺酸基团，减水剂的粘聚性增强，具有良好的分散保水作用，提高了混凝土的保水率，并且减水剂可能有一定的引气作用，有利于降低水分蒸发和泌水，故开裂面积减少；另一方面，由于对氨基苯磺酸钠－磺化丙酮－甲醛缩合物高效减水剂分子结构发生改变，形成较大的空间位阻效应，使其对水泥的分散性能增强，水泥颗粒水化反应形成的较小凝胶图案不能互相聚集，且在这一时间段内，水化反应使拌合物刚性结构进一步形成，混凝土塑性变形得到了有效控制，增强了混凝土的塑性抗拉强度，对抵抗塑性有利。
Preparation process and application of sodium sulfanilate-sulfonated acetone-formaldehyde condensate superplasticizer
一种对氨基苯磺酸钠－磺化丙酮－甲醛缩合物高效减水剂制备工艺及其应用
2023-12-01
Patent
Electronic Resource
Chinese
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