A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Early-strength polycarboxylate superplasticizer and preparation method thereof
The invention discloses an early-strength polycarboxylate superplasticizer, which belongs to the field of polycarboxylate superplasticizers and is prepared from the following raw materials in parts by mass: 100 parts of unsaturated polyether, 4 to 12 parts of super-early-strength functional monomer ester, 400 to 420 parts of monomer A, 0.5 to 1.5 parts of monomer B, 1.5 to 5.0 parts of monomer C, 4.0 to 4.5 parts of initiator, 5.0 to 5.5 parts of a reducing agent and 0.7 to 1.0 part of a chain transfer agent, wherein the chain transfer agent is sodium ammonium hypophosphite, the self-prepared super-early-strength functional monomer ester is introduced into a molecular chain, so that the early strength of the concrete can be improved. According to the early-strength polycarboxylic acid superplasticizer provided by the invention, the super-early-strength functional monomer ester is prepared by taking methanol and tartaric acid as base materials, and the super-early-strength functional monomer ester is applied to a polyacrylic acid superplasticizer and is used for modifying the superplasticizer, so that the setting time of cement minerals can be effectively shortened, and the initial hydration environment of cement is improved; and the end of the cement hydration induction period is accelerated.
本发明公开了一种早强聚羧酸减水剂，属于聚羧酸减水剂领域，其由原料制得，所述原料包括下述质量份数的组分：100份不饱和聚醚，4～12份超早强功能单体酯，400～420份单体A，0.5～1.5份单体B，1.5～5.0份单体C，4.0～4.5份引发剂，5.0～5.5份还原剂，0.7～1.0份链转移剂，其中链转移剂采用次磷酸铵钠，在分子链中引入自制超早强功能单体酯能够提高混凝土的早期强度。本发明提供一种早强聚羧酸减水剂，该减水剂采用甲醇和酒石酸为基础材料制备出超早强功能单体酯，其应用于聚丙烯酸酸系减水剂中并对减水剂改性，能够有效地胶水水泥矿物的凝结时间，改善水泥初期的水化环境，加快了水泥水化诱导期的结束。
Early-strength polycarboxylate superplasticizer and preparation method thereof
The invention discloses an early-strength polycarboxylate superplasticizer, which belongs to the field of polycarboxylate superplasticizers and is prepared from the following raw materials in parts by mass: 100 parts of unsaturated polyether, 4 to 12 parts of super-early-strength functional monomer ester, 400 to 420 parts of monomer A, 0.5 to 1.5 parts of monomer B, 1.5 to 5.0 parts of monomer C, 4.0 to 4.5 parts of initiator, 5.0 to 5.5 parts of a reducing agent and 0.7 to 1.0 part of a chain transfer agent, wherein the chain transfer agent is sodium ammonium hypophosphite, the self-prepared super-early-strength functional monomer ester is introduced into a molecular chain, so that the early strength of the concrete can be improved. According to the early-strength polycarboxylic acid superplasticizer provided by the invention, the super-early-strength functional monomer ester is prepared by taking methanol and tartaric acid as base materials, and the super-early-strength functional monomer ester is applied to a polyacrylic acid superplasticizer and is used for modifying the superplasticizer, so that the setting time of cement minerals can be effectively shortened, and the initial hydration environment of cement is improved; and the end of the cement hydration induction period is accelerated.
本发明公开了一种早强聚羧酸减水剂，属于聚羧酸减水剂领域，其由原料制得，所述原料包括下述质量份数的组分：100份不饱和聚醚，4～12份超早强功能单体酯，400～420份单体A，0.5～1.5份单体B，1.5～5.0份单体C，4.0～4.5份引发剂，5.0～5.5份还原剂，0.7～1.0份链转移剂，其中链转移剂采用次磷酸铵钠，在分子链中引入自制超早强功能单体酯能够提高混凝土的早期强度。本发明提供一种早强聚羧酸减水剂，该减水剂采用甲醇和酒石酸为基础材料制备出超早强功能单体酯，其应用于聚丙烯酸酸系减水剂中并对减水剂改性，能够有效地胶水水泥矿物的凝结时间，改善水泥初期的水化环境，加快了水泥水化诱导期的结束。
Early-strength polycarboxylate superplasticizer and preparation method thereof
一种早强聚羧酸减水剂及其制备方法
XIAO YANFEI (author) / ZHOU YOUBIN (author) / ZHOU YUBING (author) / PEI SHUNWEN (author)
2022-01-21
Patent
Electronic Resource
Chinese
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