A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Water-reducing cement grinding aid as well as preparation method and application thereof
The invention discloses a water-reducing cement grinding aid as well as a preparation method and application thereof. The water-reducing cement grinding aid takes hydrogen peroxide as a chain initiator and mercaptopropionic acid and/or ascorbic acid as a chain transfer agent, and polyether macromonomers (isopentenol polyoxyethylene ether) and acrylic acid are synthesized into comb-shaped polycarboxylic acid with excellent performance at a low temperature of 20-40 DEG C; and a certain amount of cross-linking monomer is added into the synthesized comb-shaped polycarboxylic acid according to a molecular structure design principle, the molecular structure of the polycarboxylic acid is changed, andthe micro-crosslinking polycarboxylic acid water-reducing cement grinding aid with better grinding aid, water reducing property and dispersity and higher early and later strength of cement is synthesized.
本发明公开了一种减水型水泥助磨剂及其制备方法和应用，该减水型水泥助磨剂以双氧水为链引发剂，巯基丙酸和/或抗坏血酸为链转移剂，将聚醚大单体（异戊烯醇聚氧乙烯醚）和丙烯酸在低温20‑40℃下合成性能优异的梳形聚羧酸，然后根据分子结构设计原理，在合成的梳形聚羧酸中加入一定量交联单体，改变聚羧酸的分子结构，合成出助磨性、减水性、分散性更好的使水泥早、后期强度更高的微交联聚羧酸减水型水泥助磨剂。
Water-reducing cement grinding aid as well as preparation method and application thereof
The invention discloses a water-reducing cement grinding aid as well as a preparation method and application thereof. The water-reducing cement grinding aid takes hydrogen peroxide as a chain initiator and mercaptopropionic acid and/or ascorbic acid as a chain transfer agent, and polyether macromonomers (isopentenol polyoxyethylene ether) and acrylic acid are synthesized into comb-shaped polycarboxylic acid with excellent performance at a low temperature of 20-40 DEG C; and a certain amount of cross-linking monomer is added into the synthesized comb-shaped polycarboxylic acid according to a molecular structure design principle, the molecular structure of the polycarboxylic acid is changed, andthe micro-crosslinking polycarboxylic acid water-reducing cement grinding aid with better grinding aid, water reducing property and dispersity and higher early and later strength of cement is synthesized.
本发明公开了一种减水型水泥助磨剂及其制备方法和应用，该减水型水泥助磨剂以双氧水为链引发剂，巯基丙酸和/或抗坏血酸为链转移剂，将聚醚大单体（异戊烯醇聚氧乙烯醚）和丙烯酸在低温20‑40℃下合成性能优异的梳形聚羧酸，然后根据分子结构设计原理，在合成的梳形聚羧酸中加入一定量交联单体，改变聚羧酸的分子结构，合成出助磨性、减水性、分散性更好的使水泥早、后期强度更高的微交联聚羧酸减水型水泥助磨剂。
Water-reducing cement grinding aid as well as preparation method and application thereof
一种减水型水泥助磨剂及其制备方法和应用
LI XIAOJING (author) / XIE HAO (author) / SUN BO (author) / LIU GUOHUA (author)
2021-04-06
Patent
Electronic Resource
Chinese
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
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
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