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Retarding composite water reducing agent for silica fume-free refractory self-flowing castable and preparation method of retarding composite water reducing agent
The invention discloses a retarding composite water reducing agent for a silica fume-free refractory self-flowing castable, wherein the retarding composite water reducing agent is prepared from a melamine water reducing agent, a naphthalene water reducing agent, a polycarboxylic acid water reducing agent and citric acid as raw materials, wherein the mass ratio of the melamine water reducing agentto the naphthalene water reducing agent to the polycarboxylic acid water reducing agent to citric acid is 3:3:(2-3):(0.2-1). Compared with a single melamine water reducing agent or naphthalene water reducing agent or polycarboxylic acid water reducing agent, the composite water reducing agent has the advantages that the water reducing efficiency is obviously improved; meanwhile, with introductionof anhydrous citric acid, the dispersing performance of the composite water reducing agent is improved, the water reducing agent has good dispersity, and moreover, the system is more stable and the retarder performance is better; and the anhydrous citric acid has a water reducing effect, and through compounding of the anhydrous citric acid, the melamine water reducing agent, the naphthalene waterreducing agent and the polycarboxylic acid water reducing agent, the double requirements of high water reducing efficiency and high-temperature (30 DEG C-50 DEG C) retarding of the silica fume-free refractory self-flowing castable are met.
本发明公开了一种无硅灰耐火自流浇注料用缓凝型复合减水剂，以三聚氰胺类减水剂、萘系减水剂、聚羧酸系减水剂和柠檬酸为原料制成，三聚氰胺类减水剂、萘系减水剂、聚羧酸系减水剂和柠檬酸的质量比为3:3:2～3:0.2～1。相比于单一三聚氰胺减水剂或萘系减水剂或聚羧酸减水剂减水剂，本发明复合减水剂明显提升了减水效率，同时引入无水柠檬酸，不仅改善了复合减水剂的分散性能，使减水剂具备良好的分散性，而且使得体系更加稳定、缓凝性能更优，同时无水柠檬酸也具备减水作用，通过无水柠檬酸和三聚氰胺类减水剂、萘系减水剂和聚羧酸系减水剂的复配，满足了无硅灰耐火自流浇注料的高减水效率和高温(30℃～50℃)缓凝的双重要求。
Retarding composite water reducing agent for silica fume-free refractory self-flowing castable and preparation method of retarding composite water reducing agent
The invention discloses a retarding composite water reducing agent for a silica fume-free refractory self-flowing castable, wherein the retarding composite water reducing agent is prepared from a melamine water reducing agent, a naphthalene water reducing agent, a polycarboxylic acid water reducing agent and citric acid as raw materials, wherein the mass ratio of the melamine water reducing agentto the naphthalene water reducing agent to the polycarboxylic acid water reducing agent to citric acid is 3:3:(2-3):(0.2-1). Compared with a single melamine water reducing agent or naphthalene water reducing agent or polycarboxylic acid water reducing agent, the composite water reducing agent has the advantages that the water reducing efficiency is obviously improved; meanwhile, with introductionof anhydrous citric acid, the dispersing performance of the composite water reducing agent is improved, the water reducing agent has good dispersity, and moreover, the system is more stable and the retarder performance is better; and the anhydrous citric acid has a water reducing effect, and through compounding of the anhydrous citric acid, the melamine water reducing agent, the naphthalene waterreducing agent and the polycarboxylic acid water reducing agent, the double requirements of high water reducing efficiency and high-temperature (30 DEG C-50 DEG C) retarding of the silica fume-free refractory self-flowing castable are met.
本发明公开了一种无硅灰耐火自流浇注料用缓凝型复合减水剂，以三聚氰胺类减水剂、萘系减水剂、聚羧酸系减水剂和柠檬酸为原料制成，三聚氰胺类减水剂、萘系减水剂、聚羧酸系减水剂和柠檬酸的质量比为3:3:2～3:0.2～1。相比于单一三聚氰胺减水剂或萘系减水剂或聚羧酸减水剂减水剂，本发明复合减水剂明显提升了减水效率，同时引入无水柠檬酸，不仅改善了复合减水剂的分散性能，使减水剂具备良好的分散性，而且使得体系更加稳定、缓凝性能更优，同时无水柠檬酸也具备减水作用，通过无水柠檬酸和三聚氰胺类减水剂、萘系减水剂和聚羧酸系减水剂的复配，满足了无硅灰耐火自流浇注料的高减水效率和高温(30℃～50℃)缓凝的双重要求。
Retarding composite water reducing agent for silica fume-free refractory self-flowing castable and preparation method of retarding composite water reducing agent
无硅灰耐火自流浇注料用缓凝型复合减水剂及其制备方法
ZHANG JU (Autor:in) / ZHANG LANYIN (Autor:in)
04.08.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Composite retarding and water reducing agent and preparation method thereof
| Europäisches Patentamt | 2020
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