Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mud-resistant dry-mixed mortar admixture and preparation method thereof
The invention belongs to the technical field of building material admixtures, and particularly relates to a mud-resistant dry-mixed mortar admixture and a preparation method thereof.The mud-resistant dry-mixed mortar admixture is prepared from, by weight, 20%-40% of sulfonated chitosan, 5%-15% of air entraining agents, 20%-40% of powdery polycarboxylic acid water reducing agents and 10%-25% of thickening time control agents, a preparation method of the sulfonated chitosan comprises the following steps: firstly, dissolving 50 parts of chitosan with the average molecular weight of 10000-30000 in 100 parts of 2 wt% acetic acid solution, heating to 40 DEG C, stirring and dissolving, adding 0.45 part of ammonium persulfate, stirring until dissolving, and starting to dropwise add a material A and a material B, the material A is a sodium p-styrenesulfonate solution and consists of 60 parts of sodium p-styrenesulfonate and 45 parts of water, the material B is a vitamin C aqueous solution, and the material C is a water solution and consists of 50 parts of sodium p-styrenesulfonate and 45 parts of water. The dry-mixed mortar admixture is composed of 0.2 part of vitamin C and 40 parts of water, the dropwise adding time of the material A and the material B is 2 hours, and the dry-mixed mortar admixture has good dispersity and water-retaining property and can meet the working requirements of dry-mixed mortar.
本发明属于建筑材料外加剂技术领域，具体涉及一种抗泥型干混砂浆外加剂及其制备方法，该抗泥型干混砂浆外加剂，由以下百分比材料构成：磺化壳聚糖：20％‑40％、引气剂：5％‑15％、粉体聚羧酸减水剂：20％‑40％、调凝剂：10‑25％，所述磺化壳聚糖的制备方法为：先将平均分子量为10000至30000的壳聚糖50份溶解于100份、2wt％醋酸溶液中，加热至40℃并搅拌溶解，加入过硫酸铵0.45份，搅拌至溶解，开始滴加A、B料，A料为对苯乙烯磺酸钠溶液，由60份对苯乙烯磺酸钠与45份水组成，B料为维生素C水溶液，由0.2份维生素C与40份水组成，A、B料的滴加时间为2小时，该干混砂浆外加剂具有较好的分散性、保水性，可满足干混砂浆的工作要求。
Mud-resistant dry-mixed mortar admixture and preparation method thereof
The invention belongs to the technical field of building material admixtures, and particularly relates to a mud-resistant dry-mixed mortar admixture and a preparation method thereof.The mud-resistant dry-mixed mortar admixture is prepared from, by weight, 20%-40% of sulfonated chitosan, 5%-15% of air entraining agents, 20%-40% of powdery polycarboxylic acid water reducing agents and 10%-25% of thickening time control agents, a preparation method of the sulfonated chitosan comprises the following steps: firstly, dissolving 50 parts of chitosan with the average molecular weight of 10000-30000 in 100 parts of 2 wt% acetic acid solution, heating to 40 DEG C, stirring and dissolving, adding 0.45 part of ammonium persulfate, stirring until dissolving, and starting to dropwise add a material A and a material B, the material A is a sodium p-styrenesulfonate solution and consists of 60 parts of sodium p-styrenesulfonate and 45 parts of water, the material B is a vitamin C aqueous solution, and the material C is a water solution and consists of 50 parts of sodium p-styrenesulfonate and 45 parts of water. The dry-mixed mortar admixture is composed of 0.2 part of vitamin C and 40 parts of water, the dropwise adding time of the material A and the material B is 2 hours, and the dry-mixed mortar admixture has good dispersity and water-retaining property and can meet the working requirements of dry-mixed mortar.
本发明属于建筑材料外加剂技术领域，具体涉及一种抗泥型干混砂浆外加剂及其制备方法，该抗泥型干混砂浆外加剂，由以下百分比材料构成：磺化壳聚糖：20％‑40％、引气剂：5％‑15％、粉体聚羧酸减水剂：20％‑40％、调凝剂：10‑25％，所述磺化壳聚糖的制备方法为：先将平均分子量为10000至30000的壳聚糖50份溶解于100份、2wt％醋酸溶液中，加热至40℃并搅拌溶解，加入过硫酸铵0.45份，搅拌至溶解，开始滴加A、B料，A料为对苯乙烯磺酸钠溶液，由60份对苯乙烯磺酸钠与45份水组成，B料为维生素C水溶液，由0.2份维生素C与40份水组成，A、B料的滴加时间为2小时，该干混砂浆外加剂具有较好的分散性、保水性，可满足干混砂浆的工作要求。
Mud-resistant dry-mixed mortar admixture and preparation method thereof
一种抗泥型干混砂浆外加剂及其制备方法
HUANG LUN (Autor:in) / LI CAI (Autor:in) / WU XIAOBO (Autor:in) / ZHONG SHEN (Autor:in) / QIAN SHANSHAN (Autor:in) / GUO XIANGJIN (Autor:in) / LIANG YANHUA (Autor:in)
02.02.2024
Patent
Elektronische Ressource
Chinesisch
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