Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Early strength type ether polycarboxylate superplasticizer and preparation method thereof
The invention discloses an early strength type ether polycarboxylate superplasticizer and a preparation method thereof, and relates to the technical field of building materials. The superplasticizer is prepared from the following raw materials in parts by weight: 20-30 parts of an isopentenol polyethylene glycol monomethyl ether macromonomer with a polymerization degree of 27, 50-60 parts of an isopentenol polyethylene glycol monomethyl ether macromonomer with a polymerization degree of 113, 6.5-8.6 parts of acrylic acid or a derivative monomer thereof, 0.3-1.5 parts of a chain transfer agent, 0.4-0.6 part of an initiator, 2.5-3.5 parts of 2-acrylamido-2-methyl-1-propane sulfonic acid and 125-135 parts of deionized water. The early strength type ether polycarboxylate superplasticizer disclosed by the invention has the beneficial effects of small doping amount, remarkable early strength effect, high water reduction rate, small slump loss, environmental protection, smaller molecular weight distribution and higher free radical polymerization conversion rate, and the early strength of concrete prepared by a synthetic sample of the early strength type ether polycarboxylate superplasticizer disclosed by the invention is better than that of the concrete using a common superplasticizer.
Early strength type ether polycarboxylate superplasticizer and preparation method thereof
The invention discloses an early strength type ether polycarboxylate superplasticizer and a preparation method thereof, and relates to the technical field of building materials. The superplasticizer is prepared from the following raw materials in parts by weight: 20-30 parts of an isopentenol polyethylene glycol monomethyl ether macromonomer with a polymerization degree of 27, 50-60 parts of an isopentenol polyethylene glycol monomethyl ether macromonomer with a polymerization degree of 113, 6.5-8.6 parts of acrylic acid or a derivative monomer thereof, 0.3-1.5 parts of a chain transfer agent, 0.4-0.6 part of an initiator, 2.5-3.5 parts of 2-acrylamido-2-methyl-1-propane sulfonic acid and 125-135 parts of deionized water. The early strength type ether polycarboxylate superplasticizer disclosed by the invention has the beneficial effects of small doping amount, remarkable early strength effect, high water reduction rate, small slump loss, environmental protection, smaller molecular weight distribution and higher free radical polymerization conversion rate, and the early strength of concrete prepared by a synthetic sample of the early strength type ether polycarboxylate superplasticizer disclosed by the invention is better than that of the concrete using a common superplasticizer.
Early strength type ether polycarboxylate superplasticizer and preparation method thereof
LIU ZHAOYANG (Autor:in) / WANG JINCHUN (Autor:in) / YE ZI (Autor:in) / HE JUNXI (Autor:in) / KANG JING (Autor:in) / YANG XIAOFENG (Autor:in) / DONG SHUQIANG (Autor:in) / LIU JIANGTAO (Autor:in) / WANG LONGFEI (Autor:in)
10.06.2015
Patent
Elektronische Ressource
Englisch
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