A kind of preparation method of low percolation value high mechanical property polypropylene conductive film
A technology of conductive film and percolation value, applied in the field of polymer material processing, can solve the problems that restrict the preparation and application of high-performance conductive composite materials, conductive particles are prone to agglomeration, and the amount of conductive fillers is large. Effects requiring low, low percolation values
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Embodiment 1
[0021] The preparation method of the low percolation value and high mechanical properties polypropylene (PP) conductive film of this embodiment, the steps are as follows:
[0022] (1) Put the PP pellets in the melt-blown machine at 180°C to prepare a PP fiber web with a thickness of about 60 μm and a fiber diameter of 3-7 μm;
[0023] (2) Weigh a certain mass of MWCNTs and disperse them in 40 mL of xylene solvent for 10 minutes of ultrasonic oscillation, and prepare solutions with MWCNTs concentrations of 1, 0.5, 0.25, 0.1, 0.05, 0.025, and 0.01 mg / mL;
[0024] (3) Place the PP fiber web prepared in step (1) in the xylene solution of carbon nanotubes prepared in step (2) and ultrasonically vibrate for 2 min, take out the PP fiber web, wash with absolute ethanol, and dry naturally , to obtain a conductive fiber mesh;
[0025] (4) Lay two layers of the dried conductive fiber mesh on the press template, and place a certain quality of PP pellets in the middle of the upper and low...
Embodiment 2
[0029] The preparation method of the low percolation value and high mechanical properties polypropylene (PP) conductive film of this embodiment, the steps are as follows:
[0030] (1) Put the PP pellets in the melt-blown machine at 185°C to prepare a PP fiber web with a thickness of about 60 µm and a fiber diameter of 3-7 µm;
[0031] (2) Weigh a certain mass of MWCNTs and disperse them in 40 mL of xylene solvent for 10 minutes of ultrasonic oscillation, and prepare solutions with MWCNTs concentrations of 1, 0.5, 0.25, 0.1, 0.05, 0.025, and 0.01 mg / mL;
[0032] (3) Place the PP fiber web prepared in step (1) in the xylene solution of carbon nanotubes prepared in step (2) and ultrasonically vibrate for 2 min, take out the PP fiber web, wash with absolute ethanol, and dry naturally , to obtain a conductive fiber mesh;
[0033] (4) Lay two layers of the dried conductive fiber mesh on the press template, and place a certain quality of PP pellets in the middle of the upper and low...
Embodiment 3
[0035] The preparation method of the low percolation value and high mechanical properties polypropylene (PP) conductive film of this embodiment, the steps are as follows:
[0036] (1) Put the PP pellets in the melt-blown machine at 185°C to prepare a PP fiber web with a thickness of about 60 µm and a fiber diameter of 3-7 µm;
[0037] (2) Weigh a certain mass of MWCNTs and disperse them in 40 mL of xylene solvent for 10 minutes of ultrasonic oscillation, and prepare solutions with MWCNTs concentrations of 1, 0.5, 0.25, 0.1, 0.05, 0.025, and 0.01 mg / mL;
[0038] (3) Place the PP fiber web prepared in step (1) in the xylene solution of carbon nanotubes prepared in step (2) and ultrasonically vibrate for 5 minutes, take out the PP fiber web, wash with absolute ethanol, and dry naturally. Obtain conductive fiber net;
[0039] (4) Lay two layers of the dried conductive fiber mesh on the press template, and place a certain quality of PP pellets in the middle of the upper and lower ...
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