Progresses in Synthesis of Polycarboxylate Superplasticizer
The prerequisite to synthesize PCE was to prepare new macromonomers with controlled molecular mass, adjustable hydrophilic-lipophilic groups, long-chain alkyl groups, and large terminal hydroxyl groups as well. Structural modifications in the molecular scale of polycarboxylate superplasticizer (PCE) would lead to changes in properties of dispersion and water retention as well as enhancement in
Research progress on polycarboxylate based superplasticizers
Polycarboxylate ether/ester (PCE) superplasticizers are widely used due to their molecular structural designability, low dosage and high efficiency. However, their high sensitivity and strong interactions with clays in concrete reduce their dispersion and water-reduction capability, which can affect the performance of concrete seriously.
Effect of sulfonation modification of polycarboxylate
Specially, polycarboxylate superplasticizer (PCE) has been widely applied due to its relatively low doping amount, high water reducing rate and environmental friendliness property. In this review, the properties of PCE were systematically investigated based on their different molecular architecture, anchoring groups, various main/side chains
Polycarboxylate Superplasticizer - Kundu Chemicals
Polycarboxylate Superplasticizer, powder pce superplasticiser, is a new generation of polycarboxylate ether polymer, which can be used as a superplasticizer and water-reducing agent for cement-based materials such as high performance concrete, dry mortar, waterproof mortar, self-leveling, grout and polyphenyl thermal mortar.
Inhibitory Mechanism of Sulfonated Lignin on Adsorption
Properties of WPS and traditional naphthalene sulfonated formaldehyde condensates (FDN) were investigated, when water-cement ratio (W/C = 0.29) and the dosage of superplasticizer is 0.6 wt.% of
- How are polycarboxylate superplasticizers synthesized?
- In this work, a series of polycarboxylate superplasticizers (PCEs) were synthesized via copolymerization using a novel macromonomer, ethylene–glycol monovinyl polyethylene glycol (EPEG). The molecular structures were modified by varying the side chain length, carboxylate density and integrating sulfonic group.
- What is polycarboxylate superplasticizer (PCE)?
- As one important auxiliary, superplasticizers have attracted lots of attention in the concrete and building materials field. Specially, polycarboxylate superplasticizer (PCE) has been widely applied due to its relatively low doping amount, high water reducing rate and environmental friendliness property.
- Does polycarboxylate superplasticizer alter dispersion and water-reducing effects?
- Polycarboxylate superplasticizer, synthesized using different methods, may alter dispersion and water-reducing effects. The synthesis of PCE involves creating a novel macromolecular monomer with a controllable molecular mass, adjustable lipophilic, and hydrophilic moieties, as outlined in this study.
- Does polycarboxylate superplasticizer (PCE-P) affect the dispersibility of cement paste?
- polycarboxylate superplasticizer (PCE-P). The study investigated the effects of different PCE types potential of cement paste. PCE-P, synthe- rate in cement to PCE synthesized at high temperatures. PCE-P exhibited an increased slump but had in surface tension, indicating a good dispersibility.
- Why are sulfonate and carboxylate used in PCE adsorption?
- The sulfonate groups, which are strong anionic anchor groups, are always introduced into the backbone of PCEs to increase the fluidity of the mortar in studies . Carboxylic groups play important role in the adsorption of PCEs onto cement grains. The affinity of sulfonate to a positive surface is different as compared to carboxylate.
- Does sulfonate bind to a positive surface compared to carboxylate?
- The affinity of sulfonate to a positive surface is different as compared to carboxylate. Therefore, a proper introduction of sulfonic acid groups into the PCE backbone is conducive to the synergistic effect of the two groups, which then can improve the dispersibility of mortar.
