Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Early-strength type polycarboxylate superplasticizer
The invention relates to the field of concrete admixtures and discloses an early-strength type polycarboxylate superplasticizer. The early-strength type polycarboxylate superplasticizer is prepared from the following components in parts by weight: 240 to 300 parts of long side chain polyether monomer with the molecular weight of 4000; 19 to 22.5 parts of unsaturated acid; 1 to 1.2 parts of hydrogen peroxide; 0.3 to 0.5 part of reducing agent; 1 to 1.3 parts of molecular weight regulator; 18 to 23.5 parts of functional monomer; 400 to 500 parts of water; 8-10 parts of self-made early strength functional monomer; 5-7 parts of acrylamide; 1-1.5 parts of 2-acrylamide-2-methallyl sulfonic acid; 4-6 parts of methacryloyloxyethyl trimethyl ammonium chloride. The early-strength type polycarboxylate superplasticizer contains a plurality of functional groups, can significantly improve the early strength of concrete, has no influence on the later strength, is used for reinforced concrete and prefabricated parts, accelerates mold turnover, improves the production efficiency, has a higher water reducing rate than conventional early-strength agents, does not contain sulfate ions, has a low reaction temperature, and is economical and environmentally friendly.
本发明涉及混凝土外加剂领域，公开一种早强型聚羧酸减水剂，以重量份计，本发明的早强型聚羧酸减水剂包括分子量为4000的长侧链聚醚单体240～300份、不饱和酸19～22.5份、双氧水1～1.2份、还原剂0.3～0.5份、分子量调节剂1～1.3份、功能型单体18～23.5份、水400～500份，其中自制早强功能单体8～10份、丙烯酰胺5～7份、2‑丙烯酰胺基‑2‑甲基丙烯磺酸1～1.5份、甲基丙烯酰氧乙基三甲基氯化铵4～6份。本发明的早强型聚羧酸减水剂含有多种功能性官能团，能够显著提高混凝土的早期强度，对后期强度不影响，用于钢筋混凝土及预制构件，加快模具周转，提高生产效率，比常规早强剂具有更高的减水率、不含硫酸根离子、反应温度低、节约环保。
Early-strength type polycarboxylate superplasticizer
The invention relates to the field of concrete admixtures and discloses an early-strength type polycarboxylate superplasticizer. The early-strength type polycarboxylate superplasticizer is prepared from the following components in parts by weight: 240 to 300 parts of long side chain polyether monomer with the molecular weight of 4000; 19 to 22.5 parts of unsaturated acid; 1 to 1.2 parts of hydrogen peroxide; 0.3 to 0.5 part of reducing agent; 1 to 1.3 parts of molecular weight regulator; 18 to 23.5 parts of functional monomer; 400 to 500 parts of water; 8-10 parts of self-made early strength functional monomer; 5-7 parts of acrylamide; 1-1.5 parts of 2-acrylamide-2-methallyl sulfonic acid; 4-6 parts of methacryloyloxyethyl trimethyl ammonium chloride. The early-strength type polycarboxylate superplasticizer contains a plurality of functional groups, can significantly improve the early strength of concrete, has no influence on the later strength, is used for reinforced concrete and prefabricated parts, accelerates mold turnover, improves the production efficiency, has a higher water reducing rate than conventional early-strength agents, does not contain sulfate ions, has a low reaction temperature, and is economical and environmentally friendly.
本发明涉及混凝土外加剂领域，公开一种早强型聚羧酸减水剂，以重量份计，本发明的早强型聚羧酸减水剂包括分子量为4000的长侧链聚醚单体240～300份、不饱和酸19～22.5份、双氧水1～1.2份、还原剂0.3～0.5份、分子量调节剂1～1.3份、功能型单体18～23.5份、水400～500份，其中自制早强功能单体8～10份、丙烯酰胺5～7份、2‑丙烯酰胺基‑2‑甲基丙烯磺酸1～1.5份、甲基丙烯酰氧乙基三甲基氯化铵4～6份。本发明的早强型聚羧酸减水剂含有多种功能性官能团，能够显著提高混凝土的早期强度，对后期强度不影响，用于钢筋混凝土及预制构件，加快模具周转，提高生产效率，比常规早强剂具有更高的减水率、不含硫酸根离子、反应温度低、节约环保。
Early-strength type polycarboxylate superplasticizer
一种早强型聚羧酸减水剂
CHEN JIE (Autor:in) / SUN YOU (Autor:in) / FANG SHICHANG (Autor:in) / TIAN YINGBING (Autor:in)
13.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C07C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
,
Acyclische oder carbocyclische Verbindungen
Novel early-strength polycarboxylate superplasticizer
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