Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
一种由酯基封端的不饱和聚醚单体制备的保坍型聚羧酸减水剂及其制备方法
本发明涉及一种由酯基封端的不饱和聚醚单体制备的保坍型聚羧酸减水剂及其制备方法，所述酯基封端的不饱和聚醚单体的结构式如下：#imgabs0#其中，R1和R2为(CH2)n，n为2‑8的整数；R3为C1‑C12的直链或支链饱和烷基，a、b为0‑100整数。本发明所制备的酯基封端的不饱和聚醚单体，分子结构多样，亲水亲油性可调，分子量可控，与传统保坍型聚羧酸减水剂相比，酯基封端聚醚在混凝土中逐步水解，使得制备的减水剂具有更高的保持能力。
The invention relates to a slump-retaining polycarboxylate superplasticizer prepared from an ester-group-terminated unsaturated polyether monomer and a preparation method thereof, the structural formula of the ester-group-terminated unsaturated polyether monomer is shown in the specification, R1 and R2 are (CH2) n, and n is an integer from 2 to 8; r3 is a C1-C12 straight chain or branched chain saturated alkyl group, and a and b are integers from 0 to 100. The ester-terminated unsaturated polyether monomer prepared by the invention has various molecular structures, adjustable hydrophilicity and lipophilicity and controllable molecular weight, and compared with a traditional slump-retaining polycarboxylic acid water reducing agent, ester-terminated polyether is gradually hydrolyzed in concrete, so that the prepared water reducing agent has higher retention capacity.
一种由酯基封端的不饱和聚醚单体制备的保坍型聚羧酸减水剂及其制备方法
本发明涉及一种由酯基封端的不饱和聚醚单体制备的保坍型聚羧酸减水剂及其制备方法，所述酯基封端的不饱和聚醚单体的结构式如下：#imgabs0#其中，R1和R2为(CH2)n，n为2‑8的整数；R3为C1‑C12的直链或支链饱和烷基，a、b为0‑100整数。本发明所制备的酯基封端的不饱和聚醚单体，分子结构多样，亲水亲油性可调，分子量可控，与传统保坍型聚羧酸减水剂相比，酯基封端聚醚在混凝土中逐步水解，使得制备的减水剂具有更高的保持能力。
The invention relates to a slump-retaining polycarboxylate superplasticizer prepared from an ester-group-terminated unsaturated polyether monomer and a preparation method thereof, the structural formula of the ester-group-terminated unsaturated polyether monomer is shown in the specification, R1 and R2 are (CH2) n, and n is an integer from 2 to 8; r3 is a C1-C12 straight chain or branched chain saturated alkyl group, and a and b are integers from 0 to 100. The ester-terminated unsaturated polyether monomer prepared by the invention has various molecular structures, adjustable hydrophilicity and lipophilicity and controllable molecular weight, and compared with a traditional slump-retaining polycarboxylic acid water reducing agent, ester-terminated polyether is gradually hydrolyzed in concrete, so that the prepared water reducing agent has higher retention capacity.
一种由酯基封端的不饱和聚醚单体制备的保坍型聚羧酸减水剂及其制备方法
04.03.2025
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