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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

Active Publication Date: 2019-08-20
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As high-performance organic fibers, copper-plated, nickel-plated and silver-plated polyimide fibers have been developed (CN101446037B, CN101775670B, CN107313249A, CN106702356A), which can meet the requirements of shielding performance, but are limited in use in some corrosive environments
[0003] Gold-plated surface treatment technology has good corrosion resistance and anti-oxidation performance, so the development of gold-plated polyimide fibers has a good application prospect, but there is no relevant report on gold-plated polyimide fibers

Method used

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  • Conductive gold-coated polyimide fiber and preparation method thereof
  • Conductive gold-coated polyimide fiber and preparation method thereof
  • Conductive gold-coated polyimide fiber and preparation method thereof

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preparation example Construction

[0044] The present invention provides a method for preparing conductive gold-coated polyimide fibers described in the above technical solution, comprising the following steps:

[0045] Step A: Alkaline treatment and cleaning of polyimide fibers to obtain polyimide fibers with carboxylate on the surface;

[0046] Step B: placing the fibers obtained in step A in a solution of pyridine derivatives or quinoline derivatives to react, and washing to obtain ester-bonded polyimide fibers containing pyridine derivatives or quinoline derivatives on the surface;

[0047] Step C: placing the fibers obtained in step A or step B in a palladium salt solution for palladium ion exchange or complexation, and cleaning to obtain polyimide fibers 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: chemically go...

Embodiment 1

[0059] Dissolve 2-aminopyridine (47.0g, 0.5mol) and triethylamine (104.2mL, 0.75mol) in dichloromethane (300.0mL), control the reaction temperature at 0℃~20℃ and add 2-chloroacetyl chloride dropwise (62.1g, 0.55mol), react at room temperature for 3h after dropping. Add water (100.0 mL) and continue stirring for 1 h, separate the water phase, wash the organic phase with saturated aqueous sodium bicarbonate (100.0 mL), dry the organic phase with anhydrous sodium sulfate, filter off the desiccant, distill off dichloromethane, and dry in vacuo A reddish solid (76.8 g, yield: 90%), the 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).

Embodiment 2

[0061] Using 3-aminopyridine as the reaction raw material, the preparation process is the same as that in Preliminary Example 1. The product is a white solid, that is, the pyridine derivative shown in the structure of formula 103. The yield: 80.2 g, 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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Abstract

The invention provides a conductive gold-coated polyimide fiber and a preparation method thereof. The conductive gold-coated polyimide fiber comprises a modified polyimide fiber as well as a palladiumparticle layer and a gold layer which are composited on the surface of the modified polyimide fiber in sequence; the modified polyimide fiber is a polyimide fiber containing carboxylate on the surface or a polyimide fiber which is bonded by ester linkage and contains a pyridine derivative or a quinoline derivative on the surface. The fiber adopts the polyimide fiber as a base fiber and is modified with carboxylate or the pyridine derivative or quinoline derivative bonded by the ester linkage, so that the thermal shock resistance of the gold-coated fiber is improved. The conductive gold-coatedpolyimide fiber is higher in electric conductivity and has excellent corrosion resistance and oxidation resistance and wide using temperature range. The fiber has good thermal shock resistance at subzero 180 DEG C-200 DEG C, and avoids metal falling after 10 times of cycle; the electric conductivity is 4.53*10<3>-1.87*10<4> S / cm; electric conductivity and mechanical property of the fiber in the corrosive environment and oxidizing environment can be maintained.

Description

technical field [0001] The invention belongs to the technical field of polyimide, and in particular relates to a conductive gold-coated polyimide fiber and a preparation method thereof. Background technique [0002] Today is the era of electronics, high-energy rays used in medicine, military, and electronics, and electromagnetic radiation brought about by electronic equipment used in daily life will inevitably harm human health, and various electromagnetic shielding products have emerged as the times require. . Conductive fiber textiles are increasingly used as shielding raw materials. As high-performance organic fibers, copper-plated, nickel-plated and silver-plated polyimide fibers have been developed (CN101446037B, CN101775670B, CN107313249A, CN106702356A), which can meet the requirements of shielding performance, but are limited in use in some corrosive environments. [0003] Gold-plated surface treatment technology has good corrosion resistance and anti-oxidation perf...

Claims

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Application Information

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IPC IPC(8): D06M11/83D06M13/355D06M13/402D06M101/30
CPCD06M11/83D06M13/355D06M13/402D06M2101/30
Inventor 杜志军邱雪鹏矫龙代学民姚海波
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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