3D printing porous membrane and preparation method thereof, cross-linking agent, lithium battery and printing system
A 3D printing and 3D printer technology, applied in the direction of lithium batteries, battery pack parts, non-aqueous electrolyte batteries, etc., can solve the problems of poor flexibility of porous membranes, brittle cracks, and inability to apply lithium batteries, etc., to achieve the effect of enhancing flexibility
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0020] In order to solve the application problem of PET porous film in lithium battery, see figure 1 , the present invention provides a method for preparing a 3D printed high temperature resistant ultra-soft porous film, comprising: printing PET particles through a 3D printer to form a PET porous film; coating the surface of the PET porous film with a cross-linked film containing flexible groups agent; catalyze the crosslinking reaction, that is, the crosslinking agent introduces flexible groups into the surface of the PET porous film; and winding.
[0021] Specifically, the chemical formula of the crosslinking reaction is:
[0022]
[0023] Under the catalysis of light, etc., the cross-linking reaction occurs between the PET molecules through the cross-linking agent, and the flexible group is introduced into the surface of the PET porous film.
[0024] As an optional implementation of printing PET porous membrane.
[0025] See figure 1 , the PET particles are printed by...
Embodiment 1
[0038] First melt the PET particles with a relative molecular weight of 200,000 on the 3D printer; set the thickness of the required PET porous film on the 3D printer to 16 μm, the pore diameter to 40 nm, and the shape of the hole to be circular; pass the melted PET particles through the nozzle of the 3D printer Print on the cooling roller according to the set parameters to form a PET porous film; spray a layer of cross-linking agent with improved polymer flexibility on the surface of the PET porous film, wherein the flexible group R of the cross-linking agent is nitrile rubber ; Then through the action of light, the surface of the PET porous film undergoes a cross-linking reaction, and the cross-linking agent introduces flexible groups into the surface of the PET porous film; finally, the winding operation is performed to make a 3D printed high-temperature-resistant ultra-soft porous film.
Embodiment 2
[0040] First melt the PET particles with a relative molecular weight of 10,000 on the 3D printer; set the thickness of the required PET porous film on the 3D printer to 1 μm, the pore diameter to 1 nm and the shape of the hole to be circular; pass the melted PET particles through the nozzle of the 3D printer Print on the cooling roller according to the set parameters to form a PET porous film; spray a layer of cross-linking agent with improved polymer flexibility on the surface of the PET porous film, wherein the flexible group R of the cross-linking agent is polyvinyl alcohol Formal; then through the action of light, the surface of the porous PET film undergoes a cross-linking reaction, and the cross-linking agent introduces flexible groups into the surface of the porous PET film; finally, the winding operation is performed to make a 3D printed high-temperature-resistant ultra-soft porous film .
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| elongation at break | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More