Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Water reducing agent and preparation method thereof
The invention relates to the field of preparation of water reducing agents, in particular to a water reducing agent and a preparation method thereof. The preparation method of the water reducing agent comprises the following steps: (a) heating and melting naphthalene; (b) adding concentrated sulfuric acid into the molten naphthalene, and reacting to generate naphthalene sulfonic acid; (c) adding water into the generated naphthalene sulfonic acid to hydrolyze naphthalene sulfonic acid; (d) after the hydrolysis reaction is finished, dropwise adding formaldehyde into hydrolyzed naphthalene sulfonic acid to generate a naphthalene sulfonated formaldehyde condensate; and (e) dropwise adding liquid caustic soda to adjust the pH value to 7 to prepare the water reducing agent. The preparation method of the water reducing agent further relates to a water reducing agent preparation device, which comprises a circular plate, long grooves and triangular blocks. The two long grooves are oppositely formed in the circular plate, the triangular blocks are arranged at the two long grooves, and electric heating wires are arranged in the triangular blocks.
本发明涉及减水剂的制备领域，更具体的说是一种减水剂及其制备方法。一种减水剂的制备方法，包括以下步骤：(a)将萘进行加热融化。(b)在熔化后的萘中加入浓硫酸，反应产生萘磺酸；(c)向产生的萘磺酸中加水将萘磺酸进行水解；(d)待水解反应结束之后向水解后的萘磺酸中滴加甲醛，生成萘系磺化甲醛缩合物；(e)滴加液碱调整PH至七后制成减水剂。所述减水剂的制备方法中还涉及一种减水剂制备装置，包括圆板、长槽和三角块，圆板上相对设置有两个长槽，两个长槽处均设置有三角块，三角块内设置有电热丝。
Water reducing agent and preparation method thereof
The invention relates to the field of preparation of water reducing agents, in particular to a water reducing agent and a preparation method thereof. The preparation method of the water reducing agent comprises the following steps: (a) heating and melting naphthalene; (b) adding concentrated sulfuric acid into the molten naphthalene, and reacting to generate naphthalene sulfonic acid; (c) adding water into the generated naphthalene sulfonic acid to hydrolyze naphthalene sulfonic acid; (d) after the hydrolysis reaction is finished, dropwise adding formaldehyde into hydrolyzed naphthalene sulfonic acid to generate a naphthalene sulfonated formaldehyde condensate; and (e) dropwise adding liquid caustic soda to adjust the pH value to 7 to prepare the water reducing agent. The preparation method of the water reducing agent further relates to a water reducing agent preparation device, which comprises a circular plate, long grooves and triangular blocks. The two long grooves are oppositely formed in the circular plate, the triangular blocks are arranged at the two long grooves, and electric heating wires are arranged in the triangular blocks.
本发明涉及减水剂的制备领域，更具体的说是一种减水剂及其制备方法。一种减水剂的制备方法，包括以下步骤：(a)将萘进行加热融化。(b)在熔化后的萘中加入浓硫酸，反应产生萘磺酸；(c)向产生的萘磺酸中加水将萘磺酸进行水解；(d)待水解反应结束之后向水解后的萘磺酸中滴加甲醛，生成萘系磺化甲醛缩合物；(e)滴加液碱调整PH至七后制成减水剂。所述减水剂的制备方法中还涉及一种减水剂制备装置，包括圆板、长槽和三角块，圆板上相对设置有两个长槽，两个长槽处均设置有三角块，三角块内设置有电热丝。
Water reducing agent and preparation method thereof
一种减水剂及其制备方法
LUO XIAOQUAN (Autor:in)
09.07.2021
Patent
Elektronische Ressource
Chinesisch
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