Polyamide silver-plated fiber and preparation method thereof

A polyamide fiber, silver-plated fiber technology, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve problems such as harm, teratogenicity, carcinogenicity, etc.

Inactive Publication Date: 2017-07-04
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, formaldehyde is very harmful to human health and the environment, and has carcinogenic, teratogenic, mutagenic and other hazards, so it should not be used in large quantities.

Method used

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  • Polyamide silver-plated fiber and preparation method thereof
  • Polyamide silver-plated fiber and preparation method thereof
  • Polyamide silver-plated fiber and preparation method thereof

Examples

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preparation example Construction

[0031] The invention provides the invention provides a kind of preparation method of polyamide silver-plated fiber, comprises the following steps:

[0032] sensitizing polyamide fibers in a sensitizing solution to obtain sensitized fibers;

[0033] dissolving silver ammonia solution and diethyltriaminepentaacetic acid in water, adjusting the pH value of the solution to 9.8-10.2 to obtain a plating solution;

[0034] The sensitized fiber is silver-plated in a mixed solution including plating solution and glucose to obtain polyamide silver-plated fiber.

[0035] The invention sensitizes the polyamide fiber in a sensitizing solution to obtain the sensitized fiber. In the present invention, the polyamide fiber is preferably nylon 6, nylon 66 or nylon 610. In the present invention, there is no special requirement on the source of the polyamide fiber, and the source of the polyamide fiber well-known to those skilled in the art can be used, specifically, the commercially available ...

Embodiment 1

[0052] Cleaning: prepare 500mL of 1wt% NaOH solution, and pour all the solution into a 1L beaker. 20 g of virgin fibers of nylon 6 were immersed in the solution. The solution was heated to 80°C and kept stirring for 1h for alkali washing. Put the alkali-washed fibers into deionized water and wash them with stirring for 3 times, each time for 10 minutes. It is enough to detect that the pH value of the treated water is close to neutral.

[0053] Sensitization: Weigh 4.0 grams of alkali-washed nylon 6 fibers and immerse them in 1% SnCl 4 In absolute ethanol solution, sonicate for 20 minutes in an ultrasonic instrument. After the fiber was taken out, it was washed 3 times with deionized water. Use silver nitrate to detect that there is no white precipitate in the water that has washed the fiber.

[0054] Preparation of plating solution: Weigh 1 g of silver nitrate, add 20 mL of deionized water to dissolve it, and add 27 wt % ammonia water dropwise to the silver nitrate soluti...

Embodiment 2

[0064] Except the change of DTPA concentration in the plating solution, all the other schemes are consistent with embodiment 1, research the influence of DTPA concentration on silver-plated fiber resistance and silver content, the result is as follows figure 1 shown. figure 1 It is the effect of different DTPA concentrations on the resistance and silver content of the silver-plated fiber in Example 2 of the present invention.

[0065] Depend on figure 1 It can be seen that when the concentration of DTPA is 5×10 -4 ~7×10 -4 When mol / L, the silver-plated fiber has the characteristics of low resistance and high silver content, the resistance value is 165-180Ω / 10cm, and the silver content is 14-14.75%.

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Abstract

The invention provides a preparation method for a polyamide silver-plated fiber. The preparation method comprises the steps that a polyamide fiber is sensitized in a sensitizing solution to obtain a sensitized fiber; a silver ammonia solution and a diethyl triamine pentaacetic acid are dissolved into water, and the pH value of the solution is adjusted to be 9.8-10.2 to obtain a plating solution; and silver plating treatment for the sensitized fiber is carried out in the mixed solution comprising the plating solution and glucose to obtain the polyamide silver-plated fiber. According to the preparation method for the polyamide silver-plated fiber, the glucose is used for replacing formaldehyde as a reducing agent for silver plating reaction, and the diethyl triamine pentaacetic acid is added into the plating solution to form a silver plating solution system matched with the plating solution, the reduction rate of silver ions in the plating solution system and the deposition rate of silver elementary substances on the surface of the fiber are adjusted, and therefore the fiber has the good conductivity and shows the good silver plating efficiency. The silver-plated fiber has the characteristics of low resistance and high silver content, wherein the minimum resistance value is about 138 omega/10cm, the highest silver content is 15%, and the silver plating rate can reach 97%.

Description

technical field [0001] The invention relates to the technical field of polymer fibers, in particular to a polyamide silver-plated fiber and a preparation method thereof. Background technique [0002] Silver-plated fibers are coated with a single layer of silver on the fiber substrate by physical or chemical methods, which has a metallic luster of silver. Silver can inhibit the growth and reproduction of various bacteria, and can effectively sterilize bacteria. At the same time, it also has excellent electrical and thermal conductivity, and plays an important role in anti-static and anti-electromagnetic radiation. The silver-plated fiber has the soft, breathable and durable properties of the fiber. At the same time, due to the presence of silver, the silver-plated fiber not only has good bactericidal and antibacterial capabilities, but also regulates body surface heat by reflecting heat radiation from the human body and the external environment, and Properties such as antist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/28C23C18/44
CPCC23C18/285C23C18/44
Inventor 王新平何绪苗左彪
Owner ZHEJIANG SCI-TECH UNIV
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