Industrial continuous preparation equipment and process for graphene powder capable of being directly dispersed in organic system
An organic system and graphene powder technology, applied in mixers, chemical instruments and methods, chemical/physical processes, etc., to achieve large-scale batch production, simple preparation equipment, and good transferability
Active Publication Date: 2022-05-27
ZHONGBEI UNIV +1
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Aiming at the problem existing in the prior art that it is difficult to prepare graphene powders that can be directly dispersed in organic systems in batches, the present invention provides an industrialized continuous preparation equipment and process for graphene powders that can be directly dispersed in organic systems
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0068] An industrial continuous preparation process of graphene powder that can be directly dispersed in an organic system, comprising the following steps:
[0069] S1. The 4Kg graphene oxide aqueous dispersion, 20g sodium lauryl sulfate and 200g methyl methacrylate are added to the preemulsification kettle 1 in turn, the pH of the adjustment system is 8, at room temperature, open the first mechanical stirring device 101, set the speed to 200r / min, open the ultrasonic probe 102, set the power to 200W, disperse 30min, to obtain a preemulsification dispersion.
[0070] S2. Open the control valve at the bottom of the preemulsification kettle 1, so that the preemulsion dispersion liquid flows into the emulsion polymerization kettle 2, open the second mechanical stirring device 201 of the emulsion polymerization kettle 201, set the speed to 200r / min, open the heating device 202, to be raised to 70 ° C after adding 2g of initiator potassium persulfate to trigger emulsion polymerizat...
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
Login to View More Abstract
The invention belongs to the field of graphene preparation, and particularly relates to an industrial continuous preparation device and process for graphene powder capable of being directly dispersed in an organic system, and the graphene powder capable of being directly dispersed in the organic system is composed of reduced graphene oxide and oil-soluble polymer micro-nano particles tightly wrapping the reduced graphene oxide. Wherein a part of the oil-soluble polymer micro-nano particles are tightly combined with hexagonal honeycomb lattices formed by sp2 hybrid orbits in the reduced graphene oxide through a pi-pi conjugation effect, and the other part of the oil-soluble polymer micro-nano particles are combined with oxygen-containing functional groups in the reduced graphene oxide through a covalent effect. On one hand, the surface of the reduced graphene oxide can be tightly coated with the oil-soluble polymer micro-nano particles, so that agglomeration of the reduced graphene oxide in the spray drying process is effectively prevented. On the other hand, the dried graphene powder can be easily dispersed after being transferred into an organic system, and the dispersion stability can be kept for a long time.
Description
Technical field [0001] The present invention belongs to the field of graphene preparation, specifically an industrial continuous preparation equipment and process of graphene powder that can be directly dispersed in an organic system. Background [0002] Graphene is a type of sp 2 Hybridly connected carbon atoms are tightly stacked into a single-layer two-dimensional honeycomb-like lattice structure of the new material, with excellent optical, electrical, mechanical properties, in the materials, micro-nano processing, energy, biomedical and drug delivery and other fields have important application prospects, is considered to be a future revolutionary material. However, the large specific surface area of the graphene sheet layer and the intermolecular forces between the layers make graphene easy to agglomerate, limiting its functional application. [0003] At present, industrialized graphene is basically stored and used with water as a dispersed medium. However, many use cases req...
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
Login to View More IPC IPC(8): B01F33/82B01F23/80B01J19/18C08F120/14C08F2/26
CPCB01J19/18C08F120/14C08F2/26C08K3/042C08J3/122C08J3/2053C08J2333/12
Inventor 刘亚青向阳赵晓倩龚明山赵贵哲
Owner ZHONGBEI UNIV