Biological micro-fluidic chip 3D printing electrode material, 3D printing electrode and preparation method of 3D printing electrode
A microfluidic chip, 3D printing technology, applied in conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc. Alkenyl, prone to agglomeration and other problems
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[0063] The preparation method of the biological microfluidic chip 3D printing electrode material of the present invention, the specific process is as follows figure 1 shown, including the following steps:
[0064] (1) Preparation of graphene oxide gel
[0065] Graphene oxide is dissolved in a solvent to obtain a graphene oxide gel;
[0066] (2) Preparation of 3D printing electrode materials
[0067] (2-1) Add oligomers, active monomers, degradation agents, conductive particles, defoamers, polymerization inhibitors, dispersants and sintering aids to the graphene oxide gel, mix them by ball milling, and collect slurry;
[0068] (2-2) Vacuumize and stir the slurry collected after the ball mill is evenly mixed to eliminate air bubbles; then add a photoinitiator and disperse evenly by electric stirring to obtain the 3D printing electrode material for the biological microfluidic chip.
[0069] In the preparation of the biological microfluidic chip 3D printing electrode material ...
Embodiment 1
[0073] The preparation of the biological microfluidic chip 3D printing electrode material in this embodiment, the specific steps are as follows:
[0074] (1) Preparation of graphene oxide gel:
[0075] Take 8.7g of analytically pure single-layer graphene oxide powder (sheet diameter 2-5μm) into a beaker, then add 650ml of N,N-dimethylformamide, place the beaker in an ultrasonic oscillator and disperse it ultrasonically for 30min with a power of 180W , to obtain graphene oxide gel with fully exfoliated sheets.
[0076] (2) Preparation of 3D printing electrode materials
[0077] Add 180 g of difunctional aliphatic urethane acrylate to the graphene oxide gel in step (1), place the beaker on an electric stirring device and stir the mixture at a speed of 150 r / min for 20 minutes to obtain a uniformly mixed liquid.
[0078] Pour the liquid into the ball mill tank, add 120g active monomer TMPTA, 5g polyurethane wetting and dispersing agent, 0.5g sintering aid NaCl, 2.5g degradation...
Embodiment 2
[0090] The preparation of the bio-microfluidic chip 3D printing electrode material in this example is the same as that in Example 1. Further, during the ball milling process, 50 g of spherical silver powder (0.5 micron particle diameter) was added.
[0091] The preparation of the 3D printing electrode is made by using the 3D printing electrode material prepared in this example, and the specific preparation steps are the same as in Example 1. The prepared 3D printed electrode has a honeycomb structure with a complete molding shape. The electrical conductivity of the prepared 3D printed electrode was tested, and the resistivity was 214mΩ·cm, which has better electrical conductivity than the 3D printed electrode prepared in Example 1.
[0092] The microstructure of the 3D printing electrodes prepared in Example 1 and Example 2 was observed, and the microstructure diagrams of the 3D printing electrodes prepared in Example 1 and Example 2 were as follows: Figure 6 and Figure 7...
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