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Composite early-strength polycarboxylate superplasticizer and preparation method thereof
The invention relates to the field of materials for concrete preparation, and discloses a composite early-strength polycarboxylate superplasticizer which comprises the following components in parts by mass: 30-60 parts of an isobutenyl polyethylene glycol ether monomer, 2-5 parts of thiohydracrylic acid, 5-8 parts of acrylic acid, 5-10 parts of ammonium persulfate, 2-6 parts of caustic soda flakes, 2-15 parts of an early-strength component, 2-15 parts of a retarding component and 200-500 parts of soft water. The preparation method comprises the following steps: firstly, mixing ammonium persulfate and water to form a material A, mixing mercaptopropionic acid, acrylic acid and water to form a material B, then pumping the isobutenyl polyethylene glycol ether monomer and water into a reaction kettle for dissolving, simultaneously dropwise adding the material A and the material B, carrying out heat-preservation polymerization, then adding water and caustic soda flakes for neutralization, and finally detecting and compounding to form a finished product. The composite early-strength polycarboxylate superplasticizer is composed of the isobutenyl polyglycol ether monomer, mercaptopropionic acid, acrylic acid and ammonium persulfate, the stability of the polycarboxylate superplasticizer is improved, the production process is strictly controlled, and the quality of a finished product is guaranteed.
本发明涉及混凝土制备用材料领域，且公开了复合早强型聚羧酸减水剂，包括以下质量份的各个组份：30‑60份异丁烯基聚乙二醇醚单体、2‑5份巯基丙酸、5‑8份丙烯酸、5‑10份过硫酸铵、2‑6份片碱、2‑15份早强组份和2‑15份缓凝组份，200‑500份软水；且制备方法为先将过硫酸铵和水混合成A料，将巯基丙酸、丙烯酸和水混合成B料，之后将异丁烯基聚乙二醇醚单体和水抽入到反应釜溶解并同时滴加A料和B料，进行保温聚合，之后加入水和片碱进行中和，最后进行检测复配成成品；该复合早强型聚羧酸减水剂由异丁烯基聚乙二醇醚单体、巯基丙酸、丙烯酸和过硫酸铵组成，提高了该聚羧酸减水剂的稳定性，且严格把控生产工艺，保证成品质量。
Composite early-strength polycarboxylate superplasticizer and preparation method thereof
The invention relates to the field of materials for concrete preparation, and discloses a composite early-strength polycarboxylate superplasticizer which comprises the following components in parts by mass: 30-60 parts of an isobutenyl polyethylene glycol ether monomer, 2-5 parts of thiohydracrylic acid, 5-8 parts of acrylic acid, 5-10 parts of ammonium persulfate, 2-6 parts of caustic soda flakes, 2-15 parts of an early-strength component, 2-15 parts of a retarding component and 200-500 parts of soft water. The preparation method comprises the following steps: firstly, mixing ammonium persulfate and water to form a material A, mixing mercaptopropionic acid, acrylic acid and water to form a material B, then pumping the isobutenyl polyethylene glycol ether monomer and water into a reaction kettle for dissolving, simultaneously dropwise adding the material A and the material B, carrying out heat-preservation polymerization, then adding water and caustic soda flakes for neutralization, and finally detecting and compounding to form a finished product. The composite early-strength polycarboxylate superplasticizer is composed of the isobutenyl polyglycol ether monomer, mercaptopropionic acid, acrylic acid and ammonium persulfate, the stability of the polycarboxylate superplasticizer is improved, the production process is strictly controlled, and the quality of a finished product is guaranteed.
本发明涉及混凝土制备用材料领域，且公开了复合早强型聚羧酸减水剂，包括以下质量份的各个组份：30‑60份异丁烯基聚乙二醇醚单体、2‑5份巯基丙酸、5‑8份丙烯酸、5‑10份过硫酸铵、2‑6份片碱、2‑15份早强组份和2‑15份缓凝组份，200‑500份软水；且制备方法为先将过硫酸铵和水混合成A料，将巯基丙酸、丙烯酸和水混合成B料，之后将异丁烯基聚乙二醇醚单体和水抽入到反应釜溶解并同时滴加A料和B料，进行保温聚合，之后加入水和片碱进行中和，最后进行检测复配成成品；该复合早强型聚羧酸减水剂由异丁烯基聚乙二醇醚单体、巯基丙酸、丙烯酸和过硫酸铵组成，提高了该聚羧酸减水剂的稳定性，且严格把控生产工艺，保证成品质量。
Composite early-strength polycarboxylate superplasticizer and preparation method thereof
复合早强型聚羧酸减水剂及其制备方法
JIA XIAOWEI (author) / SU LEI (author) / SUN SIYU (author)
2023-08-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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