Preparation method for MOF/nylon 6 composite material

Abstract

The invention relates to modified nylon 6 resin, and a preparation method and an application thereof. The modified nylon 6 resin provided by the invention is prepared by addition of metal-organic framework (MOF) nanoparticles. The preparation method comprises the following steps: (1) dissolving a metal salt and an organic ligand used as MOF precursors, and a polymer monomer namely caprolactam intoa mixed solution composed of water and a polar organic solvent, and carrying out a reaction under heating at a certain temperature for a period of time so as to obtain a nanometer MOF dispersion; (2)carrying out evaporation so as to remove the polar organic solvent in the nanometer MOF dispersion obtained in the step (1), adding 6-aminocaproic acid into residues, and carrying out a polymerization reaction so as to obtain MOF nanoparticle modified nylon 6 resin masterbatches; and (3) subjecting the modified nylon 6 resin masterbatches obtained in the step (2) and nylon 6 (a market product) tomelt blending so as to obtain MOF nanoparticle modified nylon 6 resin. According to the invention, the MOF nanoparticles are used as a modifying agent in the process of polymerization, and the modifying agent can significantly improve crystallization properties of the modified nylon 6 resin provided by the invention.

Description

technical field [0001] The invention relates to a preparation method of a composite material containing polycaprolactam (nylon 6), in particular to a preparation method of a nanometer MOF / nylon 6 composite material. Background technique [0002] Metal-organic framework (MOF) materials are porous coordination polymers formed by the self-assembly of metal ions or ion clusters and multifunctional organic ligands. And the large specific surface area shows broad application prospects in many scientific fields, such as chemical catalysis, drug sustained release, gas adsorption and separation, hydrogen storage, and biomedicine. In order to extend the application range of MOF materials, more and more MOF composite materials have been developed. [0003] The interaction between metal ions and polymer polar groups provides new opportunities to improve the performance of polymers, and has become a hot spot in the research of polymer blend modification. A large number of studies have ...

AI Technical Summary

Problems solved by technology

However, when nylon is used as an engineering plastic, there are always problems such as slow crystallization rate, high injection mold temperature, and long molding cycle during the molding process, which affects the molding processing efficiency of nylon materials.

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