Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Acetic acid vinyl ester-acrylic ester copolymer basis solid polymer electrolyte and film

A technology of vinyl acetate and solid polymers, applied in the field of polymer electrolyte materials, can solve the problems of mutual promotion of copolymers, no patent application, low vinyl acetate content, etc., and achieve high visible light transmittance , Improve tensile strength, low cost effect

Inactive Publication Date: 2012-11-14
重庆弈派因科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, random copolymers synthesized with vinyl acetate and acrylates, such as MA, EA, BA, etc. as comonomers, and blends of copolymers and second other polymers (such as PMMA, PVdF, etc.) The solid polymer electrolyte has not been reported yet, and there is no patent application
Recently, although it has been reported in the literature that a 9:1 molar ratio of acrylate derivatives—a copolymer of methyl methacrylate MMA and vinyl acetate—is used as a matrix for solid polymer electrolytes, (Lu Lei, Zuo Xiaoxi, Li Weishan, Liu Jiansheng et al., [J]. Acta Chemica Sinica, 2007, 65 (6): 475-480), but, because the vinyl acetate content in the copolymer is too low, can not play the mutual promotion effect between each component of copolymer
And the solid polymer electrolyte based on the copolymer of methyl methacrylate and vinyl acetate and the blend of the copolymer and the second polymer beyond the molar ratio has never been reported in the literature and patent application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] With 80g deionized water dissolving massfraction be that 1% sodium lauryl sulfate joins in the there-necked flask of 250ml behind, magnetic stirring and slowly warming up to 70 ℃, constant temperature; Add 0.4% (wt) dissolved in 20g deionized water %) ammonium persulfate and a mixed solution of 0.4% (wt%) sodium bicarbonate. Stir with nitrogen gas for 20 minutes, add a mixed solution of monomer VAc and MA with a mass fraction of 8% (molar ratio is 1:1); after reacting for 30 minutes, the seeds have basically polymerized completely, and then slowly add the remaining monomer mixed solution dropwise, Control the rate of addition to 0.4ml / min, and complete the addition in 2.5 hours. After the dropwise addition, react for 1 h, stop the reaction and cool to room temperature. The whole reaction was carried out under nitrogen protection. After demulsification with 0.01 mol / L aluminum potassium sulfate, suction filter, wash with deionized water several times, and dry to consta...

Embodiment 2

[0022] Take the P(VAc-MA) random copolymer with a monomer molar ratio of 1:1 and a certain quality of PMMA so that m(PMMA) / m(copolymer)=0.5, and dissolve them in 10 mL of In the solvent tetrahydrofuran, stir well at 40°C, add the following amount of LiClO 4 or LiCF 3 SO 3 . Evaporate the solvent slowly in a dry and well-ventilated environment, and vacuum-dry the polymer electrolyte at 60°C. -4 S cm -1 . The following table is different LiClO 4 The room temperature ionic conductivity data of the polymer electrolyte at the concentration of . The unit of conductivity is S cm -1 .

[0023] Copolymer mass (g) 1.232 2.008 1.204 1.132 0.9308 1.5168 1.62 1.144 PMMA mass (g) 0.616 1.004 0.602 0.566 0.4654 0.7584 0.81 0.572 LiClO 4 / copolymer(wt%) 5 10 15 20 25 30 35 40 LiClO 4 mass (g) 0.0924 0.3012 0.2709 0.3396 0.3491 0.6826 0.8505 0.6864

[0024] Conductivity×10 -4 (S / cm) 0.9815 2.3876 5.6625 8.160...

Embodiment 3

[0026] Take the P(VAc-MA) random copolymer with a monomer molar ratio of 1:1 and a certain quality of PMMA so that m(PMMA) / m(copolymer)=1.0, and dissolve them in 10 mL of Stir well at 40°C in tetrahydrofuran as a solvent, and add LiClO in the following table 4 or LiCF 3 SO 3 . Evaporate the solvent slowly in a dry and well-ventilated environment, and vacuum-dry the polymer electrolyte at 60°C. -4 S cm -1 . The following table is different LiClO 4 The room temperature ionic conductivity data of the polymer electrolyte at the concentration of . The unit of conductivity is S cm -1 .

[0027] Copolymer mass (g) 0.994 1.0144 1.722 1.147 0.854 1.604 1.19 1.534 PMMA mass (g) 0.994 1.0144 1.722 1.147 0.854 1.604 1.19 1.534 LiClO 4 / copolymer(wt%) 5 10 15 20 25 30 35 40 LiClO 4 mass (g) 0.0994 0.2029 0.5166 0.4588 0.4270 0.9624 0.8330 1.2272 Conductivity×10 -4 (S / cm) 0.4855 0.8087 1.8778 2.8439 6.4013 4.9289 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
electrical conductivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a solid polymer electrolyte with same structure and different composite and electrolytic film, which is characterized by the following: setting the electrolytic polymer base as random copolymer of vinyl acetate VAc with feeding mole ratio at 8. 5 : 1. 5-1. 5 : 8. 5 and acrylic ester MA, MMA, EA, BA and so on; and setting as vinyl acetate-acrylic ester polymer and second polymer; setting polymer blending base as PMMA, PVdF and so on; adopting semi-continuous seed emulsion polymeric method synthesis; mixing and stirring synthetic vinyl acetate-acrylic ester random copolymer base, second polymer and Li salt under the function of the solvent evenly; getting mixed solution; casting into die; pressing; fetching film; drying; getting the product. This invention possesses better mechanical force property, hot stability and higher light transmittance ratio, which can be used to twice Li battery.

Description

technical field [0001] The invention relates to a polymer electrolyte material, in particular to a polymer electrolyte material which uses vinyl acetate and acrylate, such as: methyl acrylate MA, methyl methacrylate MMA, ethyl acrylate EA, butyl acrylate BA, etc. as comonomers. Synthetic random copolymers and blends of copolymers with second polymers, such as PMMA, PVdF, etc., are used as solid polymer electrolytes for polymer matrices. The solid polymer electrolyte produced in the present invention is usually used in the form of a polymer electrolyte membrane. The vinyl acetate-acrylate copolymer, the second polymer, the lithium salt and the solvent are mixed and stirred evenly, and then cast to form a film to obtain a solid polymer electrolyte membrane. The solid polymer electrolyte produced by the invention has the characteristics of high ion conductivity, good film-forming property, high light transmittance, excellent mechanical properties, etc., and is expected to be use...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F218/08C08F220/10C08F2/24C08F2/38C08J5/18
CPCY02P20/10
Inventor 傅相锴杨道均龚永锋
Owner 重庆弈派因科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com