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Preparation methods and applications for diaminebenzoxazole and copolyamide electrolyte of diaminebenzoxazole

A technology of copolyamide and aminobenzoxazole, which is applied in the field of synthesis of new benzoxazole diamine compounds and their copolyamides, can solve the problems of low mechanical properties and electrical conductivity of PEO polymer electrolytes, and achieve improved mechanical properties , high thermal stability, and the effect of improving electrical conductivity

Active Publication Date: 2015-11-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide the preparation method and application of benzoxazole diamine and its copolyamide electrolyte in order to solve the problem of low mechanical properties and electrical conductivity of the existing PEO polymer electrolyte

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  • Preparation methods and applications for diaminebenzoxazole and copolyamide electrolyte of diaminebenzoxazole
  • Preparation methods and applications for diaminebenzoxazole and copolyamide electrolyte of diaminebenzoxazole
  • Preparation methods and applications for diaminebenzoxazole and copolyamide electrolyte of diaminebenzoxazole

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specific Embodiment approach 1

[0027] Specific embodiment 1: The preparation method of 2,2'-butylenebis[5-aminobenzoxazole] in this embodiment is realized according to the following steps:

[0028] 1. Under the protective atmosphere of inert gas, phosphoric acid and P 2 o 5 Mix well to form polyphosphoric acid solution;

[0029] 2. Weigh 2,4-diaminophenol hydrochloride and adipic acid as reaction raw materials in a molar ratio of (2.05 to 2.2): 1, and add SnCl to the polyphosphoric acid solution obtained in step 1. 2 As a reducing agent, add the reaction raw materials 2,4-diaminophenol hydrochloride and adipic acid under the condition of controlling the temperature at 140-160°C, then raise the temperature to 160-210°C, and react for 5-8 hours to obtain the reaction product;

[0030] 3. The reaction product is neutralized by sodium carbonate or sodium hydroxide, then washed with water and dried to obtain the initial product;

[0031] 4. Extract the initial product with absolute ethanol, and finally dry it...

specific Embodiment approach 2

[0034] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in step one polyphosphoric acid solution, P 2 o 5 The mass concentration is 80% to 86%. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the reaction raw material in step 2 accounts for 13% to 16% of the mass of the polyphosphoric acid solution. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides preparation methods and applications for diaminebenzoxazole and a copolyamide electrolyte of the diaminebenzoxazole. The invention relates to synthetic methods for a novel diaminebenzoxazole compound and copolyamide of the novel diaminebenzoxazole compound. The invention is to solve the problem of low mechanical property and electrical conductivity of a conventional PEO polymer electrolyte. According to the invention, 2,2'-butylidenedi[5-amidobenzoxazole] is prepared with 2,4-diaminophenol hydrochloride and hexanedioic acid as raw materials and polyphosphoric acid as a solvent; the 2,2'-butylidenedi[5-amidobenzoxazole] respectively reacts with polyethyleneglycol dicarboxylic acid, and sulfonic lithium (sodium)-contained dicarboxylic acid or sulfonic lithium (sodium)-contained diamine so as to prepare a copolyamide I and a copolyamide II; meanwhile, the copolyamide is applied as an electrolyte of a solid lithium-ion battery. According to the invention, by introducing 2,2'-butylidenedi[5-amidobenzoxazole] into a polyamide structure, electrical conductivity and mechanical property of a polymer thin film are improved.

Description

technical field [0001] The invention relates to a novel benzoxazole diamine compound and a method for synthesizing its copolyamide, in particular to 2,2'-butylene bis[5-aminobenzoxazole] and the synthesis of two kinds of copolyamides using it as a reactant The method of amide, and relates to the application in the all-solid-state polymer lithium-ion battery. Background technique [0002] All-solid-state polymer lithium-ion battery is a new generation of high-energy battery system developed on the basis of liquid lithium-ion batteries. It is a lithium-ion battery that uses polymer electrolytes as electrolyte materials. This type of battery not only has the characteristics of high voltage, long life, and clean and pollution-free of liquid lithium-ion batteries, but also overcomes the safety problems of liquid electrolyte batteries such as easy leakage, and has high energy density and unlimited processing shapes, which can be widely used Used in mobile devices, electric vehicl...

Claims

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Application Information

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IPC IPC(8): C07D263/56C08G69/26C08G69/32C08J5/18H01M10/0565
CPCC07D263/56C08G69/265C08G69/32C08J5/18H01M10/0565Y02E60/10
Inventor 陈向群孙秋时哲梁世麟
Owner HARBIN INST OF TECH
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