A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
MICROCAPSULE TYPE POLYCARBOXYLATE SUPERPLASTICIZER AND PREPARATION METHOD THEREFOR
A microcapsule type polycarboxylate superplasticizer and a preparation method thereof. The microcapsule type polycarboxylate superplasticizer is a polycarboxylic acid aqueous solution encapsulated by a closed capsule, and the closed capsule is an organic/inorganic composite shell layer of calcium ion gel of sodium alginate or gelatin, and calcium carbonate. The organic/inorganic composite shell layer is obtained through diffusion-interface reaction of sodium alginate or gelatin, calcium salt and urea under the catalysis of urease. The microcapsule type polycarboxylate superplasticizer meets requirement of long-term and stable slump retaining of concrete in some special engineering. The preparation method has simple processes, free of organic solvent, and has high encapsulating efficiency. The microcapsule type polycarboxylate superplasticizer utilizes the protective effect and swelling effect of the capsule shell layer to slowly release the polycarboxylate superplasticizer to supplement adsorption at a later stage, so as to achieve the object of long-term and stable slump retaining.
MICROCAPSULE TYPE POLYCARBOXYLATE SUPERPLASTICIZER AND PREPARATION METHOD THEREFOR
A microcapsule type polycarboxylate superplasticizer and a preparation method thereof. The microcapsule type polycarboxylate superplasticizer is a polycarboxylic acid aqueous solution encapsulated by a closed capsule, and the closed capsule is an organic/inorganic composite shell layer of calcium ion gel of sodium alginate or gelatin, and calcium carbonate. The organic/inorganic composite shell layer is obtained through diffusion-interface reaction of sodium alginate or gelatin, calcium salt and urea under the catalysis of urease. The microcapsule type polycarboxylate superplasticizer meets requirement of long-term and stable slump retaining of concrete in some special engineering. The preparation method has simple processes, free of organic solvent, and has high encapsulating efficiency. The microcapsule type polycarboxylate superplasticizer utilizes the protective effect and swelling effect of the capsule shell layer to slowly release the polycarboxylate superplasticizer to supplement adsorption at a later stage, so as to achieve the object of long-term and stable slump retaining.
MICROCAPSULE TYPE POLYCARBOXYLATE SUPERPLASTICIZER AND PREPARATION METHOD THEREFOR
MIKROKAPSELARTIGER POLYCARBOXYLATSUPERWEICHMACHER UND HERSTELLUNGSVERFAHREN DAFÜR
SUPERPLASTIFIANT À BASE DE POLYCARBOXYLATE DE TYPE MICROCAPSULE ET PROCÉDÉ DE PRÉPARATION S'Y RAPPORTANT
RAN QIANPING (author) / HUANG ZHEN (author) / YANG YONG (author) / SHU XIN (author) / ZHOU DONGLIANG (author) / WANG TAO (author) / YAN HAN (author) / LIU JIAPING (author)
2024-07-31
Patent
Electronic Resource
English
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