good quality Polycarboxylate superplasticizer

  • good quality Polycarboxylate superplasticizer
  • good quality Polycarboxylate superplasticizer
  • good quality Polycarboxylate superplasticizer
  • What is polycarboxylate superplasticizer?
  • 1. Introduction The polycarboxylate superplasticizer is characterized by low dosage requirements, a high water-reducing rate, excellent slump retention performance, and strong designability and environmental friendliness during the production process, making them the most widely used admixture in modern concrete , , .
  • Who invented polycarboxylate superplasticizers in 2021?
  • 2021 marks the 40 th year since polycarboxylate superplasticizers (PCEs) have been invented by Nippon Shokubai company in Japan. This invention clearly represents a major breakthrough and milestone in modern concrete technology.
  • 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.
  • What is the difference between naphthalene and polycarboxylate superplasticizer?
  • Compared with naphthalene superplasticizer, polycarboxylate superplasticizer has the characteristics of a low dosage and high water reduction rate. Its moisture reduction rate is 25–35%, with a dosage of about 1.5%, close to saturation, and a moisture reduction rate of 45–48% .
  • What was the first MPEG polycarboxylate (PCE) superplasticizer?
  • Chemical structure of the first MPEG polycarboxylate (PCE) superplasticizer synthesized in 1981 in Japan. In concrete tests it was quickly discovered that the new superplasticizer not only was much more dosage effective than BNS, but also worked well at very low w/c ratios (<0.40) where polycondensates such as BNS or PMS typically failed.
  • Which chain transfer agent is used in polycarboxylate superplasticizer?
  • The selected chain transfer agent is 3-mercaptopropionic acid. Under conditions where the acid-ether ratio is 4.0:1, the reflection temperature is 35°C, the sulfonic acid content is 16.0%, and the initiator dosage is 1.0%, with all other reaction conditions held constant, polycarboxylate superplasticizer were synthesized.

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