Polyurethane binder for lithium-sulfur battery and preparation method of polyurethane binder
A lithium-sulfur battery and polyurethane technology, which is applied to battery electrodes, circuits, electrical components, etc., can solve problems such as weak force, large environmental impact, and poor battery cycle stability, and achieve the effect of improving stability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0019] S1: Preparation of polyurethane prepolymer: 10.45g of 2,4-toluene diisocyanate, 22.37g of polycarbonate diol (PCDL) with a molecular weight of 1000g / mol and 1 drop of dibutyltin dilaurate (DBTDL) were added to the reaction bottle , heat up to 80°C and stir for 60 minutes, add 5.83g of 2,2-hydroxymethylbutyric acid (DMBA) in batches, keep the temperature for 3-4 hours, and add a small amount of acetone to adjust the viscosity of the system during the reaction;
[0020]
[0021] S2: Cool at room temperature after the reaction, add triethylamine drop by drop while stirring for neutralization reaction, continue the reaction for 30 minutes, and then add deionized water dropwise to emulsify;
[0022] S3: After the emulsification is completed, add 1.36g hydroxypropyl acrylate to swell, raise the temperature to 80°C, add 1.19g 2-methylene-1,3-dioxepane, blow nitrogen, and slowly drop persulfate, After the dropwise addition, heat-retain and react for 2 hours, lower the temper...
Embodiment 2
[0028] S1: Preparation of polyurethane prepolymer: 11.29g of xylylene diisocyanate, 22.37g of polycarbonate diol (PCDL) with a molecular weight of 1000g / mol and 2 drops of dibutyltin dilaurate (DBTDL) were added to the reaction bottle , heat up to 80°C and stir for 60 minutes, add 5.83g of 2,2-hydroxymethylbutyric acid (DMBA) in batches, and keep the temperature for 3-4 hours;
[0029] S2: Cool at room temperature after the reaction, add triethylamine drop by drop while stirring for neutralization reaction, continue the reaction for 30 minutes, and then add deionized water dropwise to emulsify;
[0030] S3: After the emulsification is completed, add 1.36g hydroxypropyl acrylate to swell, raise the temperature to 80°C, add 1.19g 2-methylene-1,3-dioxepane, blow nitrogen, and slowly drop persulfate, After the dropwise addition, heat-retain and react for 2 hours, lower the temperature, and discharge the material to obtain the polyurethane binder.
Embodiment 3
[0032] S1: Preparation of polyurethane prepolymer: 12.61g of naphthalene diisocyanate, 22.37g of molecular weight 1000g / mol polycarbonate diol (PCDL) and 2 drops of dibutyltin dilaurate (DBTDL) were added to the reaction flask, and the temperature was raised to Stir at 80°C for 60 minutes, add 5.83g of 2,2-hydroxymethylbutyric acid (DMBA) in batches, and keep the reaction for 3-4 hours;
[0033] S2: Cool at room temperature after the reaction, add triethylamine drop by drop while stirring for neutralization reaction, continue the reaction for 30 minutes, and then add deionized water dropwise to emulsify;
[0034] S3: After the emulsification is completed, add 1.36g hydroxypropyl acrylate to swell, raise the temperature to 80°C, add 1.19g 2-methylene-1,3-dioxepane, blow nitrogen, and slowly drop persulfate, After the dropwise addition, heat-retain and react for 2 hours, lower the temperature, and discharge the material to obtain the polyurethane binder.
[0035] Performance te...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More