Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of anhydrous polycarboxylic acid solid water reducer
The invention provides a preparation method of an anhydrous polycarboxylic acid solid water reducing agent, and belongs to the technical field of water reducing agents. According to the technical scheme, an alcohol compound, a cross-linking agent and acrylic acid are mixed to obtain a dripping material A, and hydroxyethyl ester is used as a dripping material B; and on the basis, heating and melting a 6-carbon functional monomer VOPG, adding a polymerizing agent, stirring, dropwise adding the dropwise adding material A and the dropwise adding material B, reacting at 60-70 DEG C, neutralizing the pH value to 5-7 to obtain a liquid product, and spraying, freezing, collecting and dry-mixing the liquid product to obtain the anhydrous polycarboxylic acid powdery solid water reducer product. The finished product prepared by the preparation method disclosed by the invention has the advantages that the water reducing performance and the collapse-retaining and slow-release effects can meet the technical requirements, and the finished product does not contain water, and is low in transportation cost and long in storage life. Meanwhile, the paint does not contain formaldehyde, is low in alkali, does not discharge three wastes, and is green and environment-friendly. According to the invention, the defects of large labor demand and long time in freeze-drying and crushing processes are overcome, the production period of products is accelerated, the production efficiency is improved, the energy consumption is saved, and the cost is reduced.
本发明提供了一种无水聚羧酸固体减水剂的制备方法，属于减水剂技术领域。该技术方案将醇类化合物、交联剂、丙烯酸混合得到滴加料A，并以羟乙酯为滴加料B；在此基础上，将6碳功能性单体VOPG升温融化后，加入聚合剂，搅拌后滴加滴加料A和滴加料B，在60‑70℃下反应，中和pH值至5‑7得液体产品，液体产品经喷雾、冷冻、收集、干混后得到无水聚羧酸粉状固体减水剂产品。本发明制备的成品，其减水性能和保塌缓释效果均能满足技术要求，而且不含水分、运输成本低、储存期长。同时，本发明不含甲醛，低碱，无三废排放，绿色环保。本发明解决了冷冻干燥、粉碎工艺中的劳动力需求大、时间长的缺点，加快了产品的生产周期，提高了生产效率，节约能耗，降低成本。
Preparation method of anhydrous polycarboxylic acid solid water reducer
The invention provides a preparation method of an anhydrous polycarboxylic acid solid water reducing agent, and belongs to the technical field of water reducing agents. According to the technical scheme, an alcohol compound, a cross-linking agent and acrylic acid are mixed to obtain a dripping material A, and hydroxyethyl ester is used as a dripping material B; and on the basis, heating and melting a 6-carbon functional monomer VOPG, adding a polymerizing agent, stirring, dropwise adding the dropwise adding material A and the dropwise adding material B, reacting at 60-70 DEG C, neutralizing the pH value to 5-7 to obtain a liquid product, and spraying, freezing, collecting and dry-mixing the liquid product to obtain the anhydrous polycarboxylic acid powdery solid water reducer product. The finished product prepared by the preparation method disclosed by the invention has the advantages that the water reducing performance and the collapse-retaining and slow-release effects can meet the technical requirements, and the finished product does not contain water, and is low in transportation cost and long in storage life. Meanwhile, the paint does not contain formaldehyde, is low in alkali, does not discharge three wastes, and is green and environment-friendly. According to the invention, the defects of large labor demand and long time in freeze-drying and crushing processes are overcome, the production period of products is accelerated, the production efficiency is improved, the energy consumption is saved, and the cost is reduced.
本发明提供了一种无水聚羧酸固体减水剂的制备方法，属于减水剂技术领域。该技术方案将醇类化合物、交联剂、丙烯酸混合得到滴加料A，并以羟乙酯为滴加料B；在此基础上，将6碳功能性单体VOPG升温融化后，加入聚合剂，搅拌后滴加滴加料A和滴加料B，在60‑70℃下反应，中和pH值至5‑7得液体产品，液体产品经喷雾、冷冻、收集、干混后得到无水聚羧酸粉状固体减水剂产品。本发明制备的成品，其减水性能和保塌缓释效果均能满足技术要求，而且不含水分、运输成本低、储存期长。同时，本发明不含甲醛，低碱，无三废排放，绿色环保。本发明解决了冷冻干燥、粉碎工艺中的劳动力需求大、时间长的缺点，加快了产品的生产周期，提高了生产效率，节约能耗，降低成本。
Preparation method of anhydrous polycarboxylic acid solid water reducer
一种无水聚羧酸固体减水剂的制备方法
SONG JUN (Autor:in) / ZHENG ZHAOTIAN (Autor:in) / LI LE (Autor:in) / KONG WENHAO (Autor:in) / WANG QINGCAI (Autor:in) / WANG HE (Autor:in)
09.05.2023
Patent
Elektronische Ressource
Chinesisch
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