Preparation technique of nanoparticle composite material film for welding
A technology of composite material film and nanoparticle, which is applied in the field of preparation process of nanoparticle composite material film for welding, can solve the problems such as the preparation process of nanoparticle composite material film for welding, and achieve uniform and long-lasting dispersion effect, reliable High performance and excellent processability
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Embodiment 1
[0031] A preparation process of a nanoparticle composite material film for welding, which adopts a casting method, mainly includes the following steps:
[0032] (1) Material mixing: first mix 8g of nano-silver powder (average particle size of 20nm) with 30g of ethanol (solvent), then add 0.2g of dopamine (corrosion inhibitor), 0.1g of rosin (flux), and polyethyleneimine in sequence (dispersant) 0.1g, polyvinyl alcohol (film former) 1.2g, propylene glycol (plasticizer) 0.1g and methyl acrylate (viscosity modifier) 0.3g, each composition needs to be added at a power of 300W Stir in the ultrasonic wave for 60min until a uniform slurry is formed.
[0033] (2) Vacuum defoaming: place the slurry at a vacuum degree of -0.04MPa for defoaming for 30 minutes.
[0034] (3) Casting film formation: Spread the slurry evenly into a wet film of a certain thickness with a casting machine, the casting height is 0.10 mm, and the casting speed is 0.20 m / min.
[0035] (4) Drying and curing: dr...
Embodiment 2
[0039] A preparation process of a nanoparticle composite material film for welding, which adopts a casting method, mainly includes the following steps:
[0040] (1) Material mixing: first mix 8g of nano-silver powder (average particle size of 20nm) with 50g of acetone (solvent), then add 0.2g of dopamine (corrosion inhibitor), 0.1g of rosin (flux), and polyethyleneimine in sequence (dispersant) 0.1g, polyvinyl alcohol (film former) 1.2g, propylene glycol (plasticizer) 0.1g and methyl acrylate (viscosity modifier) 0.3g, each composition needs to be added at a power of 600W Stir in the ultrasonic wave for 30min until a uniform slurry is formed;
[0041] (2) Vacuum defoaming: place the slurry at a vacuum degree of -0.08MPa for defoaming for 20 minutes.
[0042] (3) Casting film formation: the slurry is uniformly spread into a wet film of a certain thickness with a casting machine, the casting height is 0.80 mm, and the casting speed is 0.50 m / min.
[0043] (4) Drying and curi...
Embodiment 3
[0047] A preparation process of a nanoparticle composite material film for welding, which adopts a casting method, mainly includes the following steps:
[0048] (1) Material mixing: first mix 8g of nano-silver powder (average particle size of 20nm) with 80g of ethyl acetate (solvent), then add 0.2g of dopamine (corrosion inhibitor), 0.1g of rosin (flux), polyethylene Imine (dispersant) 0.1g, polyvinyl alcohol (film forming agent) 1.2g, propylene glycol (plasticizer) 0.1g and methyl acrylate (viscosity modifier) 0.3g, after each composition is added, it needs to be Stir in a 1000W ultrasonic wave for 5 minutes until a uniform slurry is formed;
[0049] (2) Vacuum defoaming: place the slurry under the condition of vacuum degree of -0.1 MPa for defoaming for 5 minutes.
[0050] (3) Casting film formation: the slurry is uniformly spread into a wet film of a certain thickness with a casting machine, the casting height is 2.0 mm, and the casting speed is 1.0 m / min.
[0051] (4) ...
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