Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Quick-hardening early-strength polycarboxylate superplasticizer and preparation method thereof
The invention relates to a quick-hardening early-strength type polycarboxylate superplasticizer. The polymer comprises a monomer A, a monomer B, a monomer C, a monomer D, a monomer E and a monomer F,and the molar ratio is 1:(4.0-5.0):(0.01-0.2):(0.05-0.1):(0.01-0.05):(0.02-0.04), an initiator, a chain transfer agent and a low-temperature excitant are added into an aqueous solution, and a free radical copolymerization reaction is carried out to synthesize a polymer with the molecular weight of 100000-120000. The quick-hardening early-strength polycarboxylate superplasticizer provided by the invention is high in water reducing rate, can promote early hydration reaction of cement, shortens concrete setting time, greatly improves early strength of concrete, and meets the production requirements of precast concrete components on high early strength.
本发明涉及一种快硬早强型聚羧酸减水剂，包括单体A、单体B、单体C、单体D、单体E、单体F，按摩尔比为1:(4.0～5.0):(0.01～0.2):(0.05～0.1):(0.01～0.05):(0.02～0.04)，在水溶液中，加入引发剂、链转移剂和低温激发剂，利用自由基共聚反应合成分子量为100000～120000的聚合物。本发明提供的快硬早强型聚羧酸减水剂减水率高，可促进水泥早期水化反应，缩短混凝土凝结时间，大幅提高混凝土的早期强度，满足混凝土预制构件对早期强度要求高的生产需求。
Quick-hardening early-strength polycarboxylate superplasticizer and preparation method thereof
The invention relates to a quick-hardening early-strength type polycarboxylate superplasticizer. The polymer comprises a monomer A, a monomer B, a monomer C, a monomer D, a monomer E and a monomer F,and the molar ratio is 1:(4.0-5.0):(0.01-0.2):(0.05-0.1):(0.01-0.05):(0.02-0.04), an initiator, a chain transfer agent and a low-temperature excitant are added into an aqueous solution, and a free radical copolymerization reaction is carried out to synthesize a polymer with the molecular weight of 100000-120000. The quick-hardening early-strength polycarboxylate superplasticizer provided by the invention is high in water reducing rate, can promote early hydration reaction of cement, shortens concrete setting time, greatly improves early strength of concrete, and meets the production requirements of precast concrete components on high early strength.
本发明涉及一种快硬早强型聚羧酸减水剂，包括单体A、单体B、单体C、单体D、单体E、单体F，按摩尔比为1:(4.0～5.0):(0.01～0.2):(0.05～0.1):(0.01～0.05):(0.02～0.04)，在水溶液中，加入引发剂、链转移剂和低温激发剂，利用自由基共聚反应合成分子量为100000～120000的聚合物。本发明提供的快硬早强型聚羧酸减水剂减水率高，可促进水泥早期水化反应，缩短混凝土凝结时间，大幅提高混凝土的早期强度，满足混凝土预制构件对早期强度要求高的生产需求。
Quick-hardening early-strength polycarboxylate superplasticizer and preparation method thereof
一种快硬早强型聚羧酸减水剂及其制备方法
LI ZHIKUN (Autor:in) / WU SHIMEI (Autor:in) / DENG HANCANG (Autor:in)
17.04.2020
Patent
Elektronische Ressource
Chinesisch
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