Unlock instant, AI-driven research and patent intelligence for your innovation.

Conductive composite-shell hollow microspheres and preparation method thereof

A hollow microsphere, conductive polymer technology, applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of affecting the electrochemical performance and stability of materials, difficult to control the structure and size of hollow microspheres, and complicated preparation methods. , to achieve the effect of uniform particle size distribution of the emulsion, which is conducive to transmission and reduces pollution problems.

Active Publication Date: 2019-04-02
JIANGNAN UNIV
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems to be solved: for example, the preparation method is too cumbersome, and the structure and size of the hollow microspheres are difficult to control. In addition, due to the rigidity of the conductive polymer chain structure, most of the currently reported conductive polymer hollow microspheres have toughness. Poor problem, microspheres are prone to collapse and breakage during use, which affects the electrochemical performance and stability of the material

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Conductive composite-shell hollow microspheres and preparation method thereof
  • Conductive composite-shell hollow microspheres and preparation method thereof
  • Conductive composite-shell hollow microspheres and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of preparation of conductive composite shell material hollow microspheres:

[0029] (1) First weigh 6g of nano-SiO 2 Disperse in 50mL solvent ethanol, then add 120mg of diphenyldimethoxysilane, add ammonia to adjust the pH to 10, react at 50°C for 8h, and wash with ethanol and ultrapure water alternately to obtain modified nano-SiO 2 ;

[0030] (2) The modified nano-SiO obtained in the step (1) of 180 mg is ultrasonically 2 Disperse evenly in 6mL ultrapure water, and dissolve 0.3mL aniline, 0.6mL glycidyl methacrylate (GMA), 0.6mL 1,6-hexanediol acrylate (HDDA) in 4.5mL oil phase toluene at the same time Add 24mg of polymerization photoinitiator 369, mix the two phases of oil and water, and emulsify for 2min through an 8000rmp emulsifier to form a stable oil-in-water (O / W) emulsion;

[0031] (3) Place the emulsion prepared in step (2) in a UV curing machine for 3 minutes to irradiate the vinyl monomer, and then add 750 mg of ammonium persulfate and 2 mL of aqu...

Embodiment 2

[0035] A kind of preparation of conductive composite shell material hollow microspheres:

[0036] (1) First weigh 6g of nano-SiO 2 Disperse in 50mL solvent ethanol, then add 300mg of 3-methoxyacryloyloxypropyltrimethoxysilane, add ammonia water to adjust the pH to 8, react at 60°C for 12h, and wash alternately with ethanol and ultrapure water after reaction to obtain Modified nano-SiO 2 ;

[0037] (2) The modified nano-SiO obtained in the step (1) of 240 mg is ultrasonically 2Disperse evenly in 6 mL of ultrapure water, and dissolve 0.3 mL of pyrrole, 0.6 mL of dimethylaminoethyl methacrylate (DMAEMA), and 0.3 mL of divinylbenzene (DVB) in 1.8 mL of oil-phase ethyl acetate at the same time Add 36 mg of photoinitiator 1173, mix the oil and water phases, and emulsify with an emulsifier at 10,000 rpm for 5 min to form a stable oil-in-water (O / W) emulsion.

[0038] (3) Place the emulsion prepared in step (2) in a UV curing machine for 4 minutes to irradiate the vinyl monomer, a...

Embodiment 3

[0040] A kind of preparation of conductive composite shell material hollow microspheres:

[0041] (1) 300 mg of commercially available gas-phase SiO 2 Disperse evenly in 6mL ultrapure water, dissolve 0.3mL thiophene, 0.48mL styrene (St), 0.12mL dipropylene glycol diacrylate (DPGDA) in 0.6mL oil phase dichloroethane, and add 30 mg photoinitiator For agent 907, mix the two phases of oil and water, and emulsify with an emulsifier at 12500rmp for 10min to form a stable oil-in-water (O / W) emulsion.

[0042] (2) Place the emulsion prepared in step (2) in a UV curing machine for 5 minutes of light to polymerize vinyl monomers, then add 2 mL of aqueous solution containing 192 mg ferric chloride and 100 μL HCl (1M) dropwise to make Aniline was polymerized, reacted at 20°C for 24 hours without any stirring, washed alternately with water and ethanol and dried to obtain composite shell material microcapsules loaded with active monomers.

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
sizeaaaaaaaaaa
thicknessaaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses conductive composite-shell hollow microspheres, wherein the shell material of the hollow microspheres is composed of a conductive polymer, an olefin polymer and nano SiO2; thesize of the hollow microspheres is 5-100 [mu]m, and the wall thickness of the hollow microspheres is 100 nm to 2 [mu]m. The monomer of the conductive polymer is aniline, pyrrole or thiophene. The monomer of the olefin polymer is a mixture of a monofunctional olefin monomer and a bifunctional olefin monomer. The conductive composite-shell hollow microspheres which adopt the conductive polymer and the olefin polymer as the shell material are prepared by adopting a Pickering emulsion stabilized with the nano SiO2, and adopting a template process, and have advantages that a preparation method is simple and efficient, and the hollow microspheres are controllable in size.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a conductive composite shell material hollow microsphere and a preparation method thereof. Background technique [0002] Conductive polymer is a kind of conductive polymer material with conjugated molecular structure, which has the characteristics of low price, good environmental stability, excellent electrical activity and unique doping and dedoping characteristics. The field has wide application. [0003] Conductive polymer hollow microspheres have a unique three-dimensional hollow structure, which can not only provide a large specific surface area, but also effectively accommodate the volume expansion and contraction of the active material during the intercalation and extraction of electrolyte ions, and relieve the stress caused by the volume change. , thereby improving the cycle stability of electrode materials, and thus has received extensive attention. At presen...

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 Applications(China)
IPC IPC(8): B01J13/14C08F220/32C08F220/20C08G73/02C08F2/30
CPCB01J13/14C08F2/30C08F220/20C08F220/32C08F220/325C08G73/0266
Inventor 罗静董佳豪杨硕刘晓亚
Owner JIANGNAN UNIV