Conductive gold-coated polyimide fiber and preparation method thereof
A polyimide fiber and coating technology, which is applied in the field of conductive gold-coated polyimide fiber and its preparation, can solve the problems of no polyimide fiber gold plating, limited use, etc. The effect of maintaining mechanical properties, wide operating temperature range, and obvious attenuation of mechanical properties
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[0044] The present invention provides a method for preparing conductive gold-coated polyimide fiber according to the above technical scheme, which includes the following steps:
[0045] Step A: The polyimide fiber is subjected to alkaline treatment and cleaning to obtain a polyimide fiber containing carboxylate on the surface;
[0046] Step B: Place the fiber obtained in Step A in a solution of a pyridine derivative or a quinoline derivative to react and wash to obtain an ester-bonded polyimide fiber with a pyridine derivative or a quinoline derivative on the surface;
[0047] Step C: Place the fiber obtained in Step A or Step B in a palladium salt solution for palladium ion exchange or complexation, and wash, to obtain a polyimide fiber containing palladium ions on the surface;
[0048] Step D: reducing and cleaning the polyimide fiber containing palladium ions on the surface to obtain a polyimide fiber with a palladium metal particle layer on the surface;
[0049] Step E: electrolessl...
Example Embodiment
[0058] Preliminary Example 1
[0059] Dissolve 2-aminopyridine (47.0g, 0.5mol) and triethylamine (104.2mL, 0.75mol) in dichloromethane (300.0mL), control the reaction temperature and add 2-chloroacetyl chloride dropwise at 0℃~20℃ (62.1g, 0.55mol), react at room temperature for 3h after dripping. Add water (100.0mL) and continue stirring for 1h, separate the aqueous phase, wash the organic phase with saturated sodium bicarbonate aqueous solution (100.0mL), dry the organic phase with anhydrous sodium sulfate, filter out the desiccant, distill off dichloromethane, and dry in vacuum A reddish solid (76.8 g, yield: 90%), which is a pyridine derivative represented by the structure of formula 102, was obtained. 1 H NMR(400MHz, CDCl 3 ): δ4.20(s,2H),7.10-7.09(m,1H),7.77-7.72(m,1H), 8.20(d,1H,J=4.4Hz),8.32-8.31(m,2H), 8.93(s, 1H).
Example Embodiment
[0060] Preliminary Example 2
[0061] Using 3-aminopyridine as the reaction raw material, the preparation process is the same as that of Preliminary Example 1. The product is a white solid, that is, the pyridine derivative represented by the structure of Formula 103, the yield: 80.2 g, and the yield: 94%. 1 H NMR(400MHz, D 2 O): δ9.16(d,J=3Hz,1H), 8.42(d,1H,J=6Hz), 8.40(d,1H,J=9Hz), 7.90(dd,1H,J=9Hz,6Hz) , 4.25 (s, 2H).
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