An enhanced self-healing ion-conducting gel
By copolymerizing the matrix and phosphate ester monomers, and adding cationic and nylon fibers, an enhanced self-healing ionic conductive gel is formed, which solves the problem of insufficient mechanical properties of existing gels and achieves high strength, toughness and self-healing ability, making it suitable for smart wearable devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HENAN UNIV OF URBAN CONSTR
- Filing Date
- 2026-05-08
- Publication Date
- 2026-06-26
AI Technical Summary
Existing ion-conductive gels have poor mechanical properties, making it difficult to meet the requirements of high mechanical performance applications such as smart wearable devices.
By copolymerizing the matrix and phosphate ester monomers, and adding cationic and nylon fibers, an enhanced self-healing ionic conductive gel is formed. The mechanical properties and self-healing ability of the gel are improved by utilizing the covalent bonds of the olefin monomers, the hydrogen bonds between functional groups and the electrostatic interactions, as well as the interactions of the nylon fibers.
Enhanced self-healing ionic conductive gels possess high strength, toughness, and self-repair capabilities, improving the stability and safety of flexible electronic devices and meeting their electrochemical performance requirements.
Abstract
Description
Technical Field
[0001] This invention belongs to the field of conductive gel technology, and particularly relates to an enhanced self-healing ionic conductive gel. Background Technology
[0002] Ion-conducting hydrogels are water-based gel materials formed by adding substances with ionic conductivity. They possess excellent conductivity and biocompatibility, making them widely applicable in medicine, biosensing, and electronic engineering. In electronic engineering, ion-conducting hydrogels can be used to fabricate flexible circuits and electrodes. In biosensing, they can be used to create various biosensors, such as pH sensors, conductivity sensors, and bioelectric sensors. In the energy sector, they can be used to fabricate flexible batteries and supercapacitors, providing stable power output due to their excellent conductivity and mechanical properties. In optoelectronic devices, they can be used to fabricate photodiodes and solar cells; their biocompatibility and plasticity allow them to integrate well with biological tissues, enabling biosensing and energy conversion. In environmental monitoring, they can be used to create chemical and biological sensors, enabling real-time environmental monitoring by detecting chemical substances and biomolecules. In electronic skin, they can be used to create electronic skin; their excellent conductivity and flexibility allow for close adhesion to human skin, enabling health monitoring and other applications.
[0003] However, most ion-conducting gels have poor mechanical properties. Therefore, they are currently mainly used in applications that do not require high mechanical strength, such as sensors. If the mechanical properties of ion-conducting gels can be improved, their application scope will be broadened. If ion-conducting hydrogels achieve excellent mechanical properties, such as high toughness, excellent tensile properties, and good resilience, they will have wide applications in the field of smart wearable devices. Summary of the Invention
[0004] The purpose of this invention is to provide an enhanced self-healing ionic conductive gel, which aims to solve the problem that the existing ionic conductive gels have poor mechanical properties and cannot meet the requirements of high mechanical performance applications such as smart wearable devices.
[0005] The present invention is achieved as follows: an enhanced self-healing ionic conductive gel, wherein the enhanced self-healing ionic conductive gel is obtained by copolymerization of a matrix and phosphate ester monomers, and the enhanced self-healing ionic conductive gel also contains cations. in: The matrix is one of the monomers of tributylhexadecenylphosphonium bromide, tributyl-n-octenephosphonium bromide, triphenylhexenephosphonium bromide, tributylhexadecenylphosphonium chloride, tributyl-n-octenephosphonium chloride, and triphenylhexenephosphonium chloride; The phosphate ester monomers are one of the following: potassium salt of dodecenyl phosphate, potassium salt of hexadecenyl phosphate, potassium salt of octadecenyl phosphate, and potassium salt of octenyl phosphate; The total molar concentration of the matrix and phosphate ester monomers is 0.05~5 mol / L.
[0006] Preferably, the cation is one or more of lithium ions, potassium ions, sodium ions, calcium ions, and aluminum ions.
[0007] Preferably, the concentration of the cation is 0.1~5 mol / L.
[0008] Preferably, the enhanced self-healing ionic conductive gel further includes nylon fibers, the type of which is one of nylon 610, nylon 1414, nylon 12T and nylon 66.
[0009] Preferably, the diameter of the nylon fiber is 10-50 micrometers, and the amount added is 0.001-10% of the mass of water in the gel.
[0010] The enhanced self-healing ionic conductive gel provided by this invention has high strength and toughness and self-healing ability, which can effectively improve the stability and safety of flexible electronic devices; at the same time, the gel electrolyte has good electrochemical performance, which can meet the requirements of flexible electronic devices. Detailed Implementation
[0011] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0012] An enhanced self-healing ionic conductive gel, wherein the enhanced self-healing ionic conductive gel is obtained by copolymerization of a matrix and phosphate ester monomers, and wherein the enhanced self-healing ionic conductive gel also contains cations. in: The matrix is one of the monomers of tributylhexadecenylphosphonium bromide, tributyl-n-octenephosphonium bromide, triphenylhexenephosphonium bromide, tributylhexadecenylphosphonium chloride, tributyl-n-octenephosphonium chloride, and triphenylhexenephosphonium chloride; The phosphate ester monomers are one of the following: potassium salt of dodecenyl phosphate, potassium salt of hexadecenyl phosphate, potassium salt of octadecenyl phosphate, and potassium salt of octenyl phosphate; The total molar concentration of the matrix and phosphate ester monomers is 0.05~5 mol / L.
[0013] In this embodiment, nylon fibers, one of the following types of nylon: 610, 1414, 12T, and 66, with a diameter of 10-50 micrometers, are added to the enhanced self-healing ionic conductive gel at a rate of 0.001-10% of the mass of water in the gel. The cations in the enhanced self-healing ionic conductive gel are one or more of lithium ions, potassium ions, sodium ions, calcium ions, and aluminum ions, with a concentration of 0.1~5 mol / L.
[0014] The enhanced self-healing ionic conductive gel disclosed in this invention exhibits multiple interactions. First, there are covalent bonds formed by the free radical copolymerization of olefin monomers; second, there are hydrogen bonds and electrostatic interactions between functional groups. Furthermore, nylon fibers with amide groups are incorporated, which connect different macromolecular chains through interactions with the molecular chains. These interactions work synergistically to provide the gel with excellent mechanical properties. Moreover, the hydrogen bonds and electrostatic interactions are reversible; when the gel material is damaged, it can spontaneously repair itself by re-establishing these interactions.
[0015] The following are specific examples:
[0016] Example 1: 0.05 mol of tributylhexadecenylphosphonium bromide, 0.05 mol of potassium octenyl phosphate, 0.1 mol of potassium chloride, and 0.0005 mol of 2-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone were weighed and added sequentially to 100 mL of water. The mixture was stirred for 1 h to obtain a homogeneous solution. 1.2 g of nylon 610 fiber with a diameter of 20 μm was added, and the mixture was stirred for 0.5 h before being poured into a mold. The mixture was then irradiated under a UV lamp (365 nm) for 12 h to carry out a photopolymerization reaction, yielding an ion-conducting gel.
[0017] The obtained ion-conductive gel has a tensile strength of 0.88 MPa, an elongation at break of 863%, an electrical conductivity of 2.1 S / m, and an electrical conductivity of 1.3 S / m after being repeatedly cut and self-healed at the same location 5 times.
[0018] Example 2: 0.01 mol of tributyl-n-octene phosphonium bromide, 0.01 mol of potassium octenyl phosphate, 0.3 mol of sodium sulfate, and 0.0002 mol of 2-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone were weighed and added sequentially to 100 mL of water. The mixture was stirred for 1 h to obtain a homogeneous solution. 1.5 g of nylon 66 fiber with a diameter of 30 μm was added, and the mixture was stirred for 0.5 h before being poured into a mold. The mixture was then irradiated under a UV lamp (365 nm) for 10 h to carry out a photopolymerization reaction, yielding an ion-conducting gel.
[0019] The obtained ion-conductive gel has a tensile strength of 1.05 MPa, an elongation at break of 792%, an electrical conductivity of 3.7 S / m, and an electrical conductivity of 2.26 S / m after being repeatedly cut and self-healed 5 times at the same location.
[0020] Example 3: 0.015 mol of tributyl-n-octene phosphorus chloride, 0.015 mol of potassium octadecenyl phosphate, 0.25 mol of aluminum chloride, and 0.00045 mol of 2-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone were sequentially added to 100 mL of water and stirred for 1 h to obtain a homogeneous solution. 1 g of nylon 12T fiber with a diameter of 40 μm was added, and after stirring for 0.5 h, the solution was poured into a mold and irradiated under a UV lamp (365 nm) for 12 h to carry out a photopolymerization reaction, yielding an ion-conducting gel.
[0021] The obtained ion-conductive gel has a tensile strength of 1.42 MPa, an elongation at break of 637%, an electrical conductivity of 2.8 S / m, and an electrical conductivity of 2.03 S / m after being repeatedly cut and self-healed 5 times at the same location.
[0022] Example 4: 0.05 mol of tributyl-n-octene phosphonium bromide, 0.05 mol of potassium dodecenyl phosphate, 0.5 mol of lithium chloride, and 0.0005 mol of 2-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone were sequentially added to 100 mL of water and stirred for 1 h to obtain a homogeneous solution. 2 g of nylon 1414 fiber with a diameter of 20 μm was added, and after stirring for 1 h, the solution was poured into a mold and irradiated under a UV lamp (365 nm) for 15 h to carry out a photopolymerization reaction, yielding an ion-conducting gel.
[0023] The obtained ion-conductive gel has a tensile strength of 1.63 MPa, an elongation at break of 609%, an electrical conductivity of 2.6 S / m, and an electrical conductivity of 1.89 S / m after being repeatedly cut and self-healed 5 times at the same location.
[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A self-healing ionic conductive gel, characterized in that, The enhanced self-healing ionic conductive gel is obtained by copolymerization of a matrix and phosphate ester monomers, and the enhanced self-healing ionic conductive gel also contains cations. in: The matrix is one of the monomers of tributylhexadecenylphosphonium bromide, tributyl-n-octenephosphonium bromide, triphenylhexenephosphonium bromide, tributylhexadecenylphosphonium chloride, tributyl-n-octenephosphonium chloride, and triphenylhexenephosphonium chloride; The phosphate ester monomers are one of the following: potassium salt of dodecenyl phosphate, potassium salt of hexadecenyl phosphate, potassium salt of octadecenyl phosphate, and potassium salt of octenyl phosphate; The total molar concentration of the matrix and phosphate ester monomers is 0.05~5 mol / L.
2. The enhanced self-healing ionic conductive gel according to claim 1, characterized in that, The cation is one or more of lithium ions, potassium ions, sodium ions, calcium ions, and aluminum ions.
3. The enhanced self-healing ionic conductive gel according to claim 2, characterized in that, The concentration of the cation is 0.1~5 mol / L.
4. The enhanced self-healing ionic conductive gel according to claim 1, characterized in that, The enhanced self-healing ionic conductive gel also includes nylon fibers, one of which is nylon 610, nylon 1414, nylon 12T and nylon 66.
5. The enhanced self-healing ionic conductive gel according to claim 4, characterized in that, The nylon fibers have a diameter of 10-50 micrometers and are added at a rate of 0.001-10% of the mass of water in the gel.