Synthesis of polycarboxylic ether superplasticizers based on the high
Generally, polycarboxylic ether superplasticizer (PCEs) have excellent properties of high water reduction and high slump retention capacity, and they are widely used in engineering [1], [2], [3], [4]. In the synthesis of PCEs, the types of macromonomers are extremely important.
Synthesis and Properties of a Polycarboxylate Superplasticizer with a
Polycarboxylate superplasticizers (PCEs) emerged as one of the most important superplasticizers for concrete due to their superior performance. (1,2) Compared to other products like polycondensates, they fluidize cement even at low water to cement ratios, require relatively low dosages, and exhibit a long slump retention capability. (35) The
Effect of Functional Polycarboxylic Acid Superplasticizers on
Modern engineering practices require that polycarboxylic acid high-performance superplasticizers have good adaptability to various environments and materials, which indicates the importance of...
Synthesis and Performance of Polycarboxylic Acid Superplasticizer with
Abstract A new type of polycarboxylic acid superplasticizer (G18-PCEs) containing crosslinked linkage was synthesized by the method of the first esterification and then polymerization. Its monomer and polymer structure were confirmed by 1H nuclear magnetic resonance (NMR) spectroscopy and High-performance liquid chromatography.
HV6128 - Institute of Physics
polycarboxylate superplasticizer continues to grow. Polycarboxylate superplasticizer is a kind of surfactant containing carboxyl grafted copolymer in molecules, and its unique molecular structure makes it have many unique advantages, such as low dosage, high water reduction rate, significant early strength growth, satisfactory keeping slump, no
- What is polycarboxylic acid superplasticizer?
- Among them, polycarboxylic acid superplasticizer accounts for the largest proportion. Polycarboxylic superplasticizer (PCE) is a high efficient water reducing agent made by copolymerization of carboxylated unsaturated monomers with other monomers, and polycarboxylate superplasticizer was firstly developed by Catalyst Company in Japan in 1982.
- 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 polycarboxylic superplasticizer affect dispersion and water retention?
- The molecular-scale structural changes in polycarboxylic superplasticizer (PCE) can influence dispersion and water retention. Polycarboxylate superplasticizer, synthesized using different methods, may alter dispersion and water-reducing effects.
- Is star-shaped polycarboxylate a new-type superplasticizer?
- 4. Conclusions The star-shaped polycarboxylate superplasticizer, which can be considered as a new-type superplasticizer, was successfully developed by first “core” then “arm” method (esterification + polymerization) to achieve chemical structure diversity of PCE.
- Do Polycarboxylate ether/ester superplasticizers affect concrete performance?
- 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.
- How to determine the polymerization principle of polycarboxylic superplasticizers?
- According to the polymerization principle of polycarboxylic superplasticizers, the quantity ratio (acid ether ratio) of AA and TPEG-2400 should be determined first to obtain the superplasticizer molecules with a certain side chain density and molecular weight.
