Low-temperature-setting block touch screen silver paste and preparation method thereof
A touch screen, black technology, applied in the direction of cable/conductor manufacturing, input/output process of data processing, conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problem of high toxicity of paste, unstable printing quality, curing temperature Advanced problems, achieve the effect of low synthesis cost, good color opacity performance, and simple operation
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Embodiment 1
[0025] A black touch screen silver paste cured at low temperature, comprising the following components by weight: 60g of silver powder, 7.8g of pyrrolidine, 12g of polyester resin, 20g of dimethyl malonate, and 0.2g of ferric chloride.
[0026] The preparation method of the black touch screen silver paste cured at low temperature in the present embodiment comprises the following steps:
[0027] a. Add 12 g of polyester resin to 20 g of dimethyl malonate, heat and stir at 75° C. for 2 hours until the polyester resin is completely dissolved, filter and filter with a 300-mesh filter to remove insoluble matter, and obtain an organic vehicle;
[0028] b. Take 60g of silver powder with a particle size of 0.8-5 μm, add it to the organic carrier in step a, and disperse it evenly with a planetary disperser at 30°C to obtain a dispersed slurry;
[0029] c. Add 7.8g of freshly steamed anhydrous pyrrolidine and 0.2g of ferric chloride to the dispersed slurry in step b, roll it for 10 pass...
Embodiment 2
[0031] A black touch screen silver paste cured at low temperature, comprising the following components by weight: 55g of silver powder, 12.8g of pyrrolidine, 12g of polyurethane resin, 20g of carbitol, and 0.2g of trifluoroacetic acid.
[0032] The preparation method of the black touch screen silver paste cured at low temperature in the present embodiment comprises the following steps:
[0033] a. Add 12 g of polyurethane resin to 20 g of carbitol, heat and stir at 80° C. for 1.5 h until the polyurethane resin is completely dissolved, and filter with a 350-mesh filter to remove insoluble matter to obtain an organic carrier;
[0034] b. Take 55g of silver powder with a particle size of 0.8-5 μm, add it to the organic carrier in step a, and disperse it evenly with a planetary disperser at 35°C to obtain a dispersed slurry;
[0035] c. Add 12.8g freshly steamed anhydrous pyrrolidine and 0.2g trifluoroacetic acid into the dispersed slurry in step b. After rolling 10 passes with a ...
Embodiment 3
[0037] A black touch screen silver paste cured at low temperature, comprising the following components by weight: 50g of silver powder, 17.8g of pyrrolidine, 14g of polyethylene-vinyl alcohol resin, 25g of carbitol ether, and 0.1g of boron trifluoride ether.
[0038] The preparation method of the black touch screen silver paste cured at low temperature in the present embodiment comprises the following steps:
[0039] a. Take 14g of polyethylene-vinyl alcohol resin and add it to 25g of carbitol ether, heat and stir at 70°C for 2.5h until the polyethylene-vinyl alcohol resin is completely dissolved, and filter with a 250-mesh filter to remove insoluble matter to obtain organic carrier;
[0040] b. Take 50 g of silver powder with a particle size of 0.8-5 μm, add it to the organic carrier in step a, and disperse it evenly with a planetary disperser at 25° C. to obtain a dispersed slurry;
[0041] c. Add 17.8g of freshly steamed anhydrous pyrrolidine and 0.1g of boron trifluoride ...
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Abstract
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