Traditional Culture Encyclopedia - Traditional virtues - Polycarboxylic acid high-performance water reducing agent production with large monomers have what
Polycarboxylic acid high-performance water reducing agent production with large monomers have what
HPEG, TPEG, APEG, MPEG.
For sale: macromonomers: HPEG - TPEG; water reducing agent mother liquor (aliphatic/polycarboxylic acid) acrylic acid, mercaptoethyl, mercapto-propyl, VC, hydrogen peroxide; sodium sulfite 75-80; 85-90; 93, formaldehyde; sodium gluconate, citric acid, air-entraining agent. .
The monomer's double bond activity is high, *** polymerization chain growth reaction is easier to carry out, can significantly shorten the acrylic acid titration time, only need to titrate 30min to complete all the reaction. The monomer can be reacted by one-pot method, the prepared drop-addition solution can be added into the reaction system at one time, and the reaction can be completed by stirring for 30~40min, and the synthesized water-reducing agent has the same excellent performance, and it can greatly simplify the production process of polycarboxylic acid water-reducing agent.
Advantages and disadvantages
In many concrete projects, naphthalene system and other traditional high-efficiency concrete can't meet the needs of the project more and more due to the limitation of technical performance. In the domestic and foreign attention of a new generation of water reducing agent, polycarboxylic acid system of high-performance water reducing agent, due to the real based on the dispersion of cement action mechanism to design an effective molecular structure;
has a super-dispersed type, can prevent the loss of slump of the concrete without causing a significant retardation of coagulation, low dosage of the play a high plasticizing effect, fluidity to maintain a good cement to adapt to a wide range of molecular structure of the large degree of freedom, more synthetic technology, and high performance of a large margin. The cement can be used in a wide range of molecular structure, freedom, synthesis technology, high performance of the margin is very large, the concrete enhancement effect is significant, can reduce the shrinkage of concrete, the content of hazardous substances is very low and other technical performance characteristics.
Reference: Baidu Encyclopedia-Polycarboxylic Acid Water Reducer
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