A kind of nano metal wire transparent conductive film and preparation method thereof
A technology of transparent conductive film and nano metal wire, applied in cable/conductor manufacturing, conductive layer on insulating carrier, circuit, etc., can solve problems such as performance deterioration, reduction of film transmittance and flexibility, and decrease in electrical conductivity, etc. To achieve the effect of improving stability, enhancing anti-oxidation and corrosion resistance, and enhancing adhesion performance
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Embodiment 1
[0035] The preparation of embodiment 1 nano-silver wire-transparent substrate conductive structure:
[0036] In this case, nano-silver wires were coated on a hydrophilic treated glass substrate by Meyer rod-and-stick coating to form a uniform conductive network;
[0037] The nano-silver wires used have an average diameter of 34nm and a length of 18 m, silver nanowires dispersed in ethanol solution, the concentration is 10mg / ml. The nano-silver wire dispersion was mixed with anhydrous isopropanol at a mass ratio of 1:4, and was shaken uniformly by ultrasonication for 10 minutes to disperse. The glass substrate used was treated with UV-ozone for 1 minute, and its contact angle was reduced to 0°.
[0038] In this case, the maximum coating capacity of 12 m Meyer rod, the coating speed is 3cm / s. The wet film thickness after coating is about 10 m. To evaporate the solvent, the substrate was transferred to a hot plate at 80°C and baked for about 2 minutes.
Embodiment 2
[0039] Embodiment 2 glass substrate-nano-silver wire hydrophobization treatment:
[0040] In this case, the selective hydrophobization treatment of the glass substrate-silver nanowires is carried out, the purpose is to make the glass substrate hydrophobized, which is beneficial to the subsequent stripping process.
[0041] A preferred hydrophobizing treatment material is hexamethyldisilane (HMDS). The mechanism is that the imino groups of HMDS react with the hydroxyl groups on the UV-treated glass substrate in Example 1, thereby grafting trimethylsiloxane groups on the glass substrate. The process is:
[0042] First, draw 2ml of hexamethyldisilane solution, drop it into a petri dish, and place it in a closed oven with the temperature set at 70°C;
[0043] Next, place the side of the ordered silver nano wire-glass transparent film coated with the silver nano wire above the solution. For sufficient reaction, the deposition time was set at 20 minutes. Pure silver nanowires do...
Embodiment 3
[0045] Coating, curing and stripping of embodiment 3 cured glue:
[0046] In this case, the curing glue is pre-coated on the PET film, and then cured and peeled off after bonding with the hydrophobic glass-nano-silver wire to form an orderly PET curing glue composite substrate-nano-silver wire structure. At this time, the nano-silver wire Partially embedded inside the cured glue.
[0047] The preferred curing adhesive is an epoxy ultraviolet (UV) curing adhesive, use #6 m's Meyer rods were coated on the target substrate PET. Then, the PET coated with cured glue is bonded to the ordered nano-silver wire-glass that has undergone selective hydrophilic and hydrophobic treatment.
[0048] After coating, expose to a UV lamp with an optical power density of 15mW / cm2 for 1min to crosslink and cure the epoxy resin, and then bake it on a 100° hot plate for 5 minutes until the cured glue is completely cured.
[0049] The last is the stripping process. The cured film structure is PET...
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Abstract
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