Flexible liquid metal pattern based on laser activation selective metallization and preparation method thereof

[0052] Tin dioxide is mixed with SEPS in an amount of 5wt.%, adopts twin-screw extruder to melt and blend extrude (temperature 210 ℃), granulate, and the pellet injection molding (temperature 260 ℃) of gained is made polymer / Laser absorber flexible composite material standard sample. A planar near-infrared pulsed laser (wavelength 1064nm) was used to irradiate the surface of the polymer / laser absorber flexible composite standard sample for laser activation. The laser power was 4W, the laser scanning speed was 1000mm / s, and the laser frequency was 40kHz. The polymer / laser absorber flexible composite material standard sample after laser irradiation was immersed in the electroless copper plating solution, and copper was plated at 50°C for 10 minutes to prepare a conductive copper pattern. In a 0.01mol / L hydriodic acid solution, the gallium element was dropped onto the copper-plated polymer / laser absorber flexible composite material standard sample, and a nylon brush was

[0054] The liquid metal used is gallium indium alloy, the acidic solution is a 0.5 mol / L acrylic acid solution, and other conditions are consistent with Example 1.

[0056] The liquid metal used is a gallium-tin alloy, the acidic solution is a 1mol / L citric acid solution, and other conditions are the same as in Example 1.