Preparation method of solid-liquid phase change type TPU electrolyte

An electrolyte and reaction vessel technology, applied in the field of TPU, can solve problems such as poor interface charge transfer, loss, and accidental accidents, achieve excellent safety and conductivity, prevent battery burning, and avoid deformation.

Pending Publication Date: 2021-10-08
东莞市米儿塑胶原料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, liquid lithium-ion batteries also need to use solvents or other dangerous media, which are prone to accidents and irreparable losses during use, especially in the automotive field
[0003] Obviously, the development of solid-state batteries has become the general direction of future battery development, but solid-state batteries have the disadvantages of relatively low charge density and poor interface charge transfer, which cannot meet the current market requirements for batteries

Method used

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  • Preparation method of solid-liquid phase change type TPU electrolyte
  • Preparation method of solid-liquid phase change type TPU electrolyte
  • Preparation method of solid-liquid phase change type TPU electrolyte

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preparation example Construction

[0036] The invention provides a method for preparing a solid-liquid phase-change type TPU electrolyte, the preparation method comprising:

[0037] In the first stage, special polymer diols are made:

[0038] Step 1. Put the monomer diols into the reaction vessel and raise the temperature to 55-65°C;

[0039] Step 2, put adipic acid into the reaction vessel, heat up to 75-85°C and continue stirring;

[0040] Step 3. Continue stirring after heating up to 100-110°C;

[0041] Step 4. Vacuumize the reaction vessel and raise the temperature to 130-190°C until the acid value of the material is lower than 30mgKOH / g, then raise the temperature to 205-215°C;

[0042] Step 5. Add tetrabutyl titanate, heat up to 223-227°C and continue stirring until the acid value of the material is lower than 1mgKOH / g, then heat up to 235-245°C;

[0043] Step 6, reducing the vacuum degree of the reaction vessel (that is, increasing the internal pressure) until the output value of the monomer glycols r...

Embodiment 1

[0073] This embodiment provides a method for preparing a solid-liquid phase-change type TPU electrolyte, the preparation method comprising:

[0074] In the first stage, special polymer diols are made:

[0075] Prepare ingredients by weight as follows:

[0076] 1,3 butanediol 2.00kg;

[0077] Adipic acid 2.92kg;

[0078] Tetrabutyl titanate 0.01kg;

[0079] Step 1. Put 1,3-butanediol into the reaction vessel and raise the temperature to 60°C;

[0080] Step 2, put adipic acid into the reaction vessel, heat up to 80°C and continue stirring for 2 hours;

[0081] Step 3, after heating up to 105°C, continue stirring for 2 hours;

[0082] Step 4. Vacuumize the reaction vessel with a pressure of 600mmHg, heat up to 140°C and maintain for 1 hour, then heat up to 160°C and maintain for 1 hour, then heat up to 180°C and maintain for 3 hours until the acid value of the material is lower than 30mgKOH / g After that, the temperature was raised to 210°C;

[0083] Step 5. Add tetrabutyl ...

Embodiment 2

[0095] This embodiment provides a method for preparing a solid-liquid phase-change type TPU electrolyte, the preparation method comprising:

[0096] In the first stage, special polymer diols are made:

[0097] Prepare ingredients by weight as follows:

[0098] 1,3 Butanediol 1.985kg;

[0099] Adipic acid 2.29kg;

[0100] Tetrabutyl titanate 0.01kg;

[0101] Step 1. Put 1,3-butanediol into the reaction vessel and raise the temperature to 60°C;

[0102] Step 2, put adipic acid into the reaction vessel, heat up to 80°C and continue stirring for 2 hours;

[0103] Step 3, after heating up to 105°C, continue stirring for 2 hours;

[0104] Step 4. Vacuumize the reaction vessel with a pressure of 600mmHg, heat up to 140°C and maintain for 1 hour, then heat up to 160°C and maintain for 1 hour, then heat up to 180°C and maintain for 3 hours until the acid value of the material is lower than 30mgKOH / g After that, the temperature was raised to 210°C;

[0105] Step 5. Add tetrabutyl...

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Abstract

A preparation method of solid-liquid phase change type TPU electrolyte comprises the following steps of: putting monomer glycols, adipic acid and tetrabutyl titanate into a reaction container for reaction to obtain macromolecular dihydric alcohol; putting polyethylene glycol, polypropylene glycol, polypropylene glycol with three functional groups, the macromolecular dihydric alcohol, a chain extender, isocyanate, lithium salt, graphene, a flame retardant, an antioxidant, an anti-yellowing agent and a catalyst into a reaction container for reaction; baking the product through an oven; and finally put the product into an extruder for granulation to obtain the solid-liquid phase change type TPU electrolyte. The solid-liquid phase change type TPU electrolyte can be subjected to solid-liquid phase change along with the change of temperature, is in a solid state at normal temperature, is in a liquid state during use, and has excellent safety and electrical conductivity.

Description

technical field [0001] The invention relates to the field of TPU, in particular to a preparation method of a solid-liquid phase-change type TPU electrolyte. Background technique [0002] Due to the relatively high charge density of liquid lithium ions, the impedance value is only 5×10 -4 ~5×10 -2 Ω, the interfacial charge transfer ability is strong, so it is often used as the electrolyte of the battery. However, liquid lithium-ion batteries also need to use solvents or other dangerous media, which are prone to accidents and irreparable losses during use, especially in the automotive field. [0003] Obviously, the development of solid-state batteries has become the general direction of battery development in the future, but solid-state batteries have the disadvantages of relatively low charge density and poor interface charge transfer, which cannot meet the current market requirements for batteries. Contents of the invention [0004] The technical solution of the present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32C08K3/04C08K5/3492H01M10/052H01M10/0565H01M10/42
CPCC08G18/6607C08G18/4018C08G18/4804C08G18/4238C08G18/3206C08K3/042C08K5/34928H01M10/052H01M10/0565H01M10/4235H01M2300/0082Y02E60/10
Inventor 贺平
Owner 东莞市米儿塑胶原料有限公司
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