Polymerizable deep eutectic solvent for self-healing material, conductive elastomer and preparation method

Abstract

The invention discloses a polymerizable eutectic solvent for self-healing materials, a conductive elastomer and a preparation method thereof. The polymerizable eutectic solvent is obtained by reacting a hydrogen bond acceptor and a hydrogen bond donor at 60-100°C , the hydrogen bond donor includes double bond-containing carboxylic acid monomers and acrylamide monomers, the molar ratio of the hydrogen bond donor to the hydrogen bond acceptor is not less than 1:1, and the acrylamide The molar ratio of the monomer to the double bond-containing carboxylic acid monomer is not less than 1:1, and the self-healing conductive elastomer includes a polymerizable deep eutectic solvent, a crosslinking agent and an initiator. The self-healing conductive elastomer prepared by using the deep eutectic solvent has a transparent appearance, good electrical conductivity, excellent self-healing performance at -30°C to 60°C, and good environmental stability, and does not need to add conductive nanomaterials during the preparation process.

Description

technical field [0001] The invention relates to the field of ionic liquids, in particular to a polymerizable deep eutectic solvent for self-healing materials, a conductive elastomer and a preparation method thereof. Background technique [0002] Deep eutectic solvents are a subset of ionic liquids. On the basis of inheriting the advantages of ionic liquids such as low vapor pressure, non-aqueous biocompatibility, non-flammability, chemical stability, and high solubility, they also have low cost and low toxicity. , 100% atom utilization and environmental friendliness in the preparation process, and is expected to replace ionic liquids in the future. At present, deep eutectic solvents are mainly used in such aspects as capturing carbon dioxide, dissolving metal oxides, dissolving drugs and purification, catalysts, electrodeposition, material preparation and processing biopolymers. However, there are relatively few reports on polymerizable deep eutectic solvents in the prepara...

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Problems solved by technology

The currently reported self-healing conductive materials are generally prepared using nano-conductive particles (such as polypyrrole, PEDOT:PSS, graphene, carbon nanotubes, etc.) combined with flexible polymers (such as polyurethane (PU), polydimethylsiloxane, etc. PDMS), etc.), but this method has relatively large defects. First, the addition of nano-conductive particles in the preparation process greatly reduces the transparency of self-healing materials, which limits the use of self-healing materials; second, most of the current research focuses on In the exploration of self-healing conductive hydrogels, little has been done on ionogel elastomers that do not contain moisture, and hydrogels are known to have poor mechanical properties and cannot retain their own moisture in the natural environment resulting in performance degradation The third is that the preparation process of self-healing materials is complicated, most of which involve the use of organic solvents, and the cost is high, which limits the development of self-healing materials to a certain extent.

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