The increase of the transliteration rate first increases and then decreases. When the amount of sodium hydroxide is 20%, the transliteration rate is the highest (93.8%). This is mainly because the excessive amount of sodium hydroxide in the catalyst (greater than 2.0%) causes the agglomeration of the catalyst to be aggravated, the effective catalyst active center is reduced, and the sodium hydroxide as a catalyst also has high re-usability. Polycarboxylate water reducer PC-2, initial flow of cement paste in the case of low dosage (2) As the molar ratio of acid to alcohol increases, the transliteration rate first increases and then stabilizes. The optimum acid to alcohol molar ratio is 3:1 3) As the reaction time increases, the transliteration rate first increases and then decreases, which is Sex and plasticity. This is mainly due to the fact that the large monomer MPEGMA is based on the relative fraction, the concentration of the reactants is continuously decreased, and the reaction product Two kinds of MPEG complexes with sub-mass of 1200 and 2200 are transesterified. The MPEGMA concentration is gradually increased and the by-products are formed. (4) Synthetic MPEGMA with methacrylic acid, 2-acrylamide-2-methyl Plasticity retention: a polycarboxylate superplasticizer monomer PC-2 prepared by copolymerization of a main chain with a COOH and SOH-based propionic carbonate (AMPS). The monomer of the group makes it have better dispersion. Compared with PC-1, which is sold by our company, it has better dispersion and plasticity.