Preparation method of nickel-plated and silver-plated aromatic polyamide conductive fibers

Abstract

The invention relates to a preparation method of nickel-plated and silver-plated aromatic polyamide conductive fibers, which comprises the following concrete steps of: a. washing and oil removal; b. coarsening: increasing the surface roughness and the surface wettability of fibers; c. sensitizing: soaking the fibers by adopting an aqueous solution formed by stannous chloride and hydrochloric acid; d. activation: soaking the fibers by adopting an aqueous solution formed by palladium chloride and hydrochloric acid; e. chemical nickel plating; f. sensitizing; g. activation; h. chemical silver plating; and i. coating protection. The prepared high performance nickel-plated and silver-plated aromatic polyamide conductive fibers have good electric conductivity, characteristics of heat resistance, flame retardance, light weight and high strength and functions of eliminating static electricity, conducting electricity and transmitting electrical signals. Therefore, the prepared nickel-plated and silver-plated aromatic polyamide conductive fibers can be widely applied to special departments of aviation, space flight, war industry, communication and the like and can also satisfy the clothing and equipment requirements of staffs engaging radars, television relaying and the like.

Description

technical field [0001] The invention provides a method for preparing a high-performance nickel-plated silver-plated aromatic polyamide conductive fiber. Background technique [0002] Aramid fiber (referred to as aramid fiber) is a high-performance organic fiber, mainly a linear polymer composed of amide bonds (-CO-NH-) and aromatic rings, with high strength and high modulus , low density, heat-resistant and flame-retardant, non-melting in case of open flame, good chemical stability and other excellent properties, it is widely used in military industry, personal protection fields, special industrial fields and composite material reinforcements, etc. [0003] Plating conductive metal on the surface of aramid fibers makes the surface of the fibers metallized, which can eliminate static electricity, conduct electricity, and transmit electrical signals, and is lighter and softer than metal wires. However, aramid fibers have a smooth surface, lack of active groups, low surface en...

AI Technical Summary

Problems solved by technology

However, aramid fibers have a smooth surface, lack of active groups, low surface energy, and low reactivity, which makes it difficult for electroless metal plating to deposit directly on the fiber surface, and the bonding force between the fiber and the metal coating is poor, and the metal coating is easy to fall off, thereby affecting the conductivity of the fiber. and durability

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