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High-elasticity, repairable, super-durable and harmlessly treatable ionic conductor membrane and preparation method thereof

A technology of harmless treatment and ionic conductors, applied in the field of stretchable ionic conductors, can solve the problems that ionic conductors have not been prepared, and achieve stable and reliable electrical properties, excellent elasticity and fatigue resistance, and good durability.

Inactive Publication Date: 2021-09-07
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no harmless ionic conductors have been prepared so far.

Method used

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  • High-elasticity, repairable, super-durable and harmlessly treatable ionic conductor membrane and preparation method thereof
  • High-elasticity, repairable, super-durable and harmlessly treatable ionic conductor membrane and preparation method thereof
  • High-elasticity, repairable, super-durable and harmlessly treatable ionic conductor membrane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Example 1: A method for preparing an ion conductor with high elasticity, repairability, ultra-durability and harmless treatment

[0027] Dissolve 5g of PVA (hydrolysis degree above 99%, molecular weight 146k ~ 186k) in 70ml DMSO at 90°C, then add 1M hydrochloric acid (3.3mL, hydrochloric acid 0.12g), and then add 3.45g of B-vanilla to the solution Aldehyde modifier (the molar percentage of grafting is 40%, and the modifier accounts for the repeating structural unit of PVA (ie-C2 h 4 The molar percentage of O-) is 20%); Wherein, the massfraction of PVA is 5.6%, the massfraction of vanillin (modifier) ​​is 3.9%, the massfraction of hydrochloric acid (catalyst) is 0.14%; And at 80 ℃ Stirring and reacting for 8h under the conditions, so that the modifier is covalently grafted onto the polymer to obtain a polymer matrix solution (obtaining 88.87g of a polymer matrix solution, wherein the mass of the polymer matrix is ​​8.04g, and the mass fraction is 9.0%, Because 1 mole of...

Embodiment 2

[0029] Example 2: A method for preparing an ion conductor with high elasticity, repairability, ultra-durability and harmless treatment

[0030] Dissolve 5g of PVA (hydrolysis degree above 99%, molecular weight 146k~186k) into 70ml of organic solvent DMSO at 90°C, then add 1M hydrochloric acid (3.3mL, 0.12g of hydrochloric acid), and then add modifier to the solution 3.88g B-vanillin (grafting molar percentage is 45%, modifier accounts for the repeating structural unit of PVA (being-C 2 h 4 The molar percentage of O-) is 22.5%), wherein, the massfraction of PVA is 5.6%, the massfraction of vanillin (modifier) ​​is 4.3%, the massfraction of hydrochloric acid (catalyst) is 0.13%; And at 80 ℃ Stirring and reacting for 8h under the condition, thereby the modifying agent is covalently grafted onto the polymer to obtain a polymer matrix solution (obtaining 89.3g of a polymer matrix solution, wherein the mass of the polymer matrix is ​​8.42g, and the mass fraction is 9.4%, Because 1...

Embodiment 3

[0032] Example 3: A method for preparing an ion conductor with high elasticity, repairability, ultra-durability and harmless treatment

[0033] Dissolve 5g of PVA (hydrolysis degree above 99%, molecular weight 146k~186k) into 70ml of organic solvent DMSO at 90°C, then add 1M hydrochloric acid (3.3mL, 0.12g of hydrochloric acid), and then add modifier to the solution 3.02g B-vanillin (grafting molar percentage is 35%, modifier accounts for the repeating structural unit of PVA (being-C 2 h 4 The molar percentage of O-) is 16.5%), wherein, the massfraction of PVA is 5.7%, the massfraction of vanillin (modifier) ​​is 3.4%, the massfraction of hydrochloric acid (catalyst) is 0.14%; And at 80 ℃ Stirring and reacting for 8h under the condition, thereby modifier covalently grafted on the polymer, obtain polymer matrix solution (obtain polymer matrix solution 88.44g, wherein the quality of polymer matrix is ​​7.66g, mass fraction is 8.7%, Because 1 mole of vanillin and 1 mole of wate...

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Abstract

The invention discloses a high-elasticity, repairable, super-durable and harmlessly-treatable ionic conductor membrane and a preparation method thereof, and belongs to the technical field of stretchable ionic conductors. The preparation method comprises the following steps: covalently grafting a modifier onto a polymer under the catalysis of a catalyst to obtain a polymer matrix; heating and concentrating the polymer matrix solution at 25-70 DEG C, and uniformly mixing with the ionic liquid according to a certain mass ratio; and pouring the composite solution on a glass sheet to form a film by pouring, drying for 12-72 hours under the vacuum condition of 50-90 DEG C, and finally drying for 1-6 hours under the vacuum condition of 50-70 DEG C, thereby obtaining the ion conductor film which has excellent elasticity, is repairable, is super-durable and can be harmlessly treated. The preparation method is simple, the elasticity of the stretchable ionic conductor is greatly improved, the service life of the stretchable ionic conductor is greatly prolonged, and a new thought is provided for preparing the super-durable ionic conductor with the harmless discarding capacity.

Description

technical field [0001] The invention belongs to the technical field of stretchable ion conductors, and specifically relates to a highly elastic, repairable, ultra-durable and harmless ion conductor membrane and a preparation method thereof. Background technique [0002] Ionic conductors refer to a class of conductors that rely on the directional migration of ions to achieve current transmission. Stretchable ionic conductors have great application value in the fields of flexible batteries, sensors and soft robots because of their high electrical conductivity, excellent flexibility and transparency. In order to meet the growing demand for flexible electronic products, ionic conductors need to have high stretchability, good elasticity, and maintain high conductivity in the stretched state. At the same time, ionic conductors also need to have excellent anti-fatigue properties and self-healing properties to improve their durability during long-term use. In actual use, ionic con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L29/14C08K5/3445
CPCC08J5/18C08J2329/14C08K5/3445
Inventor 孙俊奇李思衡
Owner JILIN UNIV
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