Early-strength polycarboxylate superplasticizer with MOF structure and preparation method thereof

A preparation method of an early-strength polycarboxylate superplasticizer with a MOF structure, comprising the following steps:

• 1) preparation of a halogen-containing atom transfer radical polymerization (ATRP) initiator:
• performing an amidation reaction on amine-containing nanocrystalline MOFs and a halogen acyl halide organic molecule at 0-25° C. for 30-90 min, to form the halogen-containing ATRP initiator;
• wherein a molar ratio of the amine-containing nanocrystalline MOFs to the halogen acyl halide organic molecule is 1:
• (1-5);
• 2) preparation of the early-strength polycarboxylate superplasticizer with the MOF structure:
• performing an ATRP reaction on the halogen-containing ATRP initiator prepared in step 1), an unsaturated ester monomer, an unsaturated polyether macromonomer and a transition metal complex at 60-80° C. for 30-90 min, to obtain the early-strength polycarboxylate superplasticizer with the MOF structure;
• wherein a molar ratio of the halogen-containing ATRP initiator, the unsaturated ester monomer, the unsaturated polyether macromonomer and the transition metal complex is 1:
• (0.3-6):
• (0.1-1):
• (0.001-0.01).