Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modified macromonomer and low-shrinkage mud-resistant polycarboxylic acid water reducer
The invention relates to the technical field of concrete admixtures, and particularly discloses a modified macromonomer and a low-shrinkage mud-resistant polycarboxylic acid water reducer. The modified macromonomer is prepared from the following components in parts by weight: 480 to 720 parts of unsaturated polyether macromonomer, 16 to 40 parts of dicarboxylic acid or tricarboxylic acid and 2.1 to 16.0 parts of catalyst; the catalyst is one or more of concentrated sulfuric acid, zinc acetate, p-toluenesulfonic acid and 4-dimethylaminopyridine. The water reducing agent synthesized by the modified macromonomer has excellent mud resistance and low shrinkage reduction.
本申请涉及混凝土外加剂技术领域，具体公开了一种改性大单体及低减缩抗泥型聚羧酸减水剂。所述改性大单体包括以下重量份组分：不饱和聚醚大单体480‑720份、二元羧酸或三元羧酸16‑40份、催化剂2.1‑16.0份；所述催化剂为浓硫酸、乙酸锌、对甲苯磺酸、4‑二甲氨基吡啶中的一种或多种。所述改性大单体合成所得减水剂具有优异的抗泥性和低减缩性。
Modified macromonomer and low-shrinkage mud-resistant polycarboxylic acid water reducer
The invention relates to the technical field of concrete admixtures, and particularly discloses a modified macromonomer and a low-shrinkage mud-resistant polycarboxylic acid water reducer. The modified macromonomer is prepared from the following components in parts by weight: 480 to 720 parts of unsaturated polyether macromonomer, 16 to 40 parts of dicarboxylic acid or tricarboxylic acid and 2.1 to 16.0 parts of catalyst; the catalyst is one or more of concentrated sulfuric acid, zinc acetate, p-toluenesulfonic acid and 4-dimethylaminopyridine. The water reducing agent synthesized by the modified macromonomer has excellent mud resistance and low shrinkage reduction.
本申请涉及混凝土外加剂技术领域，具体公开了一种改性大单体及低减缩抗泥型聚羧酸减水剂。所述改性大单体包括以下重量份组分：不饱和聚醚大单体480‑720份、二元羧酸或三元羧酸16‑40份、催化剂2.1‑16.0份；所述催化剂为浓硫酸、乙酸锌、对甲苯磺酸、4‑二甲氨基吡啶中的一种或多种。所述改性大单体合成所得减水剂具有优异的抗泥性和低减缩性。
Modified macromonomer and low-shrinkage mud-resistant polycarboxylic acid water reducer
一种改性大单体及低减缩抗泥型聚羧酸减水剂
YUAN JUYAN (Autor:in) / WANG FEIYAN (Autor:in) / CUI YINGCHUN (Autor:in)
09.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
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
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2022