Electroconductive paste composition and the method of producing the same
A technology of electrical conductivity and composition, applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., can solve problems such as fire and explosion, and achieve low contact resistance, good conductivity, and good adhesive effect
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Example Embodiment
[0131] (Example 1)
[0132] 10% silver oxide treated silver powder with an average particle size of 400nm 50g
[0133] (Manufactured by Mitsui Metals, FHD, crystallite diameter less than 10nm)
[0134] 10% by mass aqueous solution of cocoamine acetate 5g
[0135] (Alkylamine salt type cationic surfactant)
[0136] 10% by mass aqueous solution of polyoxyethylene coconut oil alkyl amine ether 0.5 g
[0137] (Non-ionic surfactant of alkylamine type)
[0138] Water 50g
[0139] The above materials and 400 g of 2 mm diameter zirconia beads were put into a 250 ml polyethylene bottle, mixed, and mixed using a rotating machine (ball mill) for 4 hours to obtain a dispersion liquid (a) of silver particles.
[0140] 100 g of the silver powder dispersion (a1) was transferred to a flat tray with a bottom dimension of 200 mm long x 150 mm wide, and after preliminarily freeze-drying, it was vacuum freeze-dried using "DFM-05AS" manufactured by Nippon Vacuum Co., Ltd. The pre-frozen silver powder dispersio...
Example Embodiment
[0188] (Example 2)
[0189] Except that the fluororesin "VITON A-500" (manufactured by DuPont) with a fluorine content of 66% was used instead of DYNEON FC-2211 in Example 1 as the fluororesin, the same method as in Example 1 was used to obtain a silver paste (B2 ). By screen printing on PET, printing can be repeated without blur or uneven color. The volume resistivity is 2.08×10 -5 Ω·cm. By screen printing using a mask film formed with a printing pattern and a silver paste (B2), printing was repeated on the ITO-deposited glass plate in the same manner as in Example 1, to obtain a rectangular printed coating film and printing pattern . No printing defects were observed. The average thickness of the rectangular printed coating film was 11.9 μm. Determine the volume resistivity, the average is 2.08×10 -5 Ω·cm. In addition, the contact resistance was measured by the TLM method, and the result was 0.411Ω. The coating film was immersed in saturated saline at room temperature fo...
Example Embodiment
[0224] (Example 3)
[0225] 33g of silver powder (TC-38S, manufactured by Deli Chemical Co., Ltd.) with a volume average particle size of 1.26μm and 7g of fluororesin (DYNEONFC-2211, manufactured by Sumitomo 3M) with a fluorine content of 65.9% by mass were dissolved in butyl cellosolve acetic acid 11.5g of a 50:50 mixed solution of ester and 2,2,4-trimethyl-1,3-pentanediol diisobutyrate to form a varnish solution, and 400g of 2mm diameter zirconia beads They were put into a 250 cc polyethylene bottle and mixed and stirred with a shaker for 4 hours to obtain a silver paste.
[0226] The silver paste was applied on a PET having a thickness of 50 μm with an applicator, and the formed coating film was fired at 230° C. for 30 minutes, and the film thickness and volume resistivity were measured.
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