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A platform for research: civil engineering, architecture and urbanism
Water-retaining agent for pump concrete and preparation method of water-retaining agent
The invention provides a water-retaining agent for pump concrete and a preparation method of the water-retaining agent, and belongs to the technical field of concrete water-retaining agents. The water-retaining agent for the pump concrete is prepared from the following raw materials in parts by weight: 100 parts of an intermediate, 50-200 parts of epoxy chloropropane, 2-10 parts of a NaOH solution and 10-50 parts of a perchloric acid solution, the intermediate is prepared from the following raw materials in parts by weight: 100 parts of methyl 2, 5-dihydroxybenzoate and 150-450 parts of a monomer, and the monomer is aliphatic monoacid of which the terminal position is substituted by amino. The benzene ring of the prepared water-retaining agent is of a rigid structure, and when concrete is pumped, molecules of the water-retaining agent stretch in the shearing direction due to the rigid structure of the benzene ring under the shearing action, so that the molecules of the water-retaining agent have no influence on the plastic viscosity of the concrete, and the pumpability is better.
本发明提出了一种泵送混凝土用保水剂及其制备方法，属于混凝土保水剂技术领域。制备所述泵送混凝土用保水剂的原料包括：中间体100份、环氧氯丙烷50‑200份、NaOH溶液2‑10份和高氯酸溶液10‑50份，制备所述中间体的原料按重量份数计，包括100份2,5‑二羟基苯甲酸甲酯和150‑450份单体，所述单体为端位氨基取代的脂肪族一元酸。本发明制备的保水剂具有的苯环为刚性结构，当混凝土泵送时，保水剂分子在剪切作用下，由于苯环的刚性结构，分子链朝剪切方向舒展，使得保水剂分子对混凝土的塑性粘度没有影响，可泵性更好。
Water-retaining agent for pump concrete and preparation method of water-retaining agent
The invention provides a water-retaining agent for pump concrete and a preparation method of the water-retaining agent, and belongs to the technical field of concrete water-retaining agents. The water-retaining agent for the pump concrete is prepared from the following raw materials in parts by weight: 100 parts of an intermediate, 50-200 parts of epoxy chloropropane, 2-10 parts of a NaOH solution and 10-50 parts of a perchloric acid solution, the intermediate is prepared from the following raw materials in parts by weight: 100 parts of methyl 2, 5-dihydroxybenzoate and 150-450 parts of a monomer, and the monomer is aliphatic monoacid of which the terminal position is substituted by amino. The benzene ring of the prepared water-retaining agent is of a rigid structure, and when concrete is pumped, molecules of the water-retaining agent stretch in the shearing direction due to the rigid structure of the benzene ring under the shearing action, so that the molecules of the water-retaining agent have no influence on the plastic viscosity of the concrete, and the pumpability is better.
本发明提出了一种泵送混凝土用保水剂及其制备方法，属于混凝土保水剂技术领域。制备所述泵送混凝土用保水剂的原料包括：中间体100份、环氧氯丙烷50‑200份、NaOH溶液2‑10份和高氯酸溶液10‑50份，制备所述中间体的原料按重量份数计，包括100份2,5‑二羟基苯甲酸甲酯和150‑450份单体，所述单体为端位氨基取代的脂肪族一元酸。本发明制备的保水剂具有的苯环为刚性结构，当混凝土泵送时，保水剂分子在剪切作用下，由于苯环的刚性结构，分子链朝剪切方向舒展，使得保水剂分子对混凝土的塑性粘度没有影响，可泵性更好。
Water-retaining agent for pump concrete and preparation method of water-retaining agent
一种泵送混凝土用保水剂及其制备方法
LIU ZHAOYANG (author) / SONG XIN (author) / WU WEI (author) / GONG BIWEI (author) / FU YUN (author) / DENG TAO (author) / KANG JING (author) / NOUBES (author) / ZHU SHILIANG (author)
2024-12-17
Patent
Electronic Resource
Chinese
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