Sensitization-free and activation-free chemical silvering method for polyamide base body

A technology of chemical silver plating and nylon, applied in liquid chemical plating, coating, fiber type and other directions, can solve the problems of difficult to control the degree of washing, environmental pollution, cumbersome and other problems, achieve low cost, low environmental pollution, simple process method Effect

Inactive Publication Date: 2014-09-10
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is cumbersome, and the degree of washing is difficult to control, and the waste liquid of washing contains heavy metal ions, which is easy to cause environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Fabric pretreatment, wash the nylon fabric in 20g / L pretreatment solution, take it out after 30 minutes of treatment at 40°C, rinse it with tap water; irradiate the washed nylon fabric with 0.4KW ultraviolet laser 10 minutes.

[0024] (2) prepare mixed solution, containing chitosan massfraction is 1.5%, polyvinyl alcohol massfraction 3%, regulate pH with glacial acetic acid to be 3, drip cross-linking agent glyoxal under stirring state, glyoxal The mass fraction is 0.05%, and stirred for 30 minutes to obtain a chitosan derivative solution.

[0025] (3) Soak the above-mentioned pretreated nylon fabric in the chitosan derivative solution for 30 minutes, and bake at 120° C. for 30 minutes.

[0026] (4) In the configuration silver plating reaction solution, its composition: silver nitrate concentration is 15g / L, and sodium hydroxide concentration is 10g / L, and ammoniacal liquor concentration is 110ml / L, and glucose concentration is 3g / L, and fabric is immersed in elect...

Embodiment 2

[0028] (1) Fabric pretreatment, wash the nylon fabric in 25g / L pretreatment solution, take it out after 30 minutes of treatment at 90°C, rinse it with tap water; irradiate the washed nylon fabric with 0.5KW ultraviolet laser 15 minutes.

[0029] (2) prepare mixed solution, containing chitosan massfraction is 4%, polyvinyl alcohol massfraction 5%, regulate pH with glacial acetic acid to be 4, under stirring state dropwise drop cross-linking agent glutaraldehyde, glutaraldehyde The mass fraction is 0.1%, and stirred for 50 minutes to obtain a chitosan derivative solution.

[0030] (3) Soak the above-mentioned pretreated nylon fabric in the chitosan derivative solution for 6 minutes, and bake at 160° C. for 30 minutes.

[0031] (4) In the silver-plating reaction solution, its composition: the concentration of silver nitrate is 10g / L, the concentration of sodium hydroxide is 7g / L, the concentration of ammonia water is 90ml / L, and the concentration of glucose is 4g / L, and the fabr...

Embodiment 3

[0033] (1) Fabric pretreatment, wash the nylon fabric in 30g / L pretreatment solution, take it out after 20 minutes of treatment at 80°C, rinse it with tap water; irradiate the washed nylon fabric with 0.6KW ultraviolet laser 30 minutes.

[0034] (2) prepare mixed solution, chitosan massfraction is 6.5%, polyvinyl alcohol massfraction 8%, regulate pH with glacial acetic acid and be 5, under stirring state, drop into cross-linking agent salicylaldehyde, salicylaldehyde mass fraction The fraction is 0.3%, and stirred for 60 minutes to obtain a chitosan derivative solution.

[0035] (3) Soak the above-mentioned pretreated nylon fabric in chitosan derivative solution for 6 minutes, and bake at 140°C for 20 minutes.

[0036] (4) In the configuration silver plating reaction solution, its composition: silver nitrate concentration is 13g / L, and sodium hydroxide concentration is 8g / L, and ammoniacal liquor concentration is 100ml / L, and sucrose concentration is 4g / L, and fabric is dippe...

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PUM

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Abstract

The invention relates to a sensitization-free and activation-free chemical silvering method for a polyamide base body. The method comprises the following steps: (1) soaking a polyamide fabric in a pretreatment solution, washing, taking out and cleanly rinsing to obtain the washed polyamide fabric, and performing ultraviolet laser radiation to obtain the treated polyamide fabric; (2) preparing chitosan and polyvinyl alcohol mixing solution, adjusting the pH value by using glacial acetic acid, and dropwise adding a cross-linking agent under a stirring state to obtain a chitosan derivative solution; (3) soaking the treated polyamide fabric obtained in the step (1) in the chitosan derivative solution, and baking to obtain the polyamide fabric modified by chitosan derivatives; and (4) soaking the modified polyamide fabric in a silvering reaction solution, chemically plating, performing vibrating reaction in a vibrating dyeing machine, and then taking out, washing and drying to obtain the polyamide base body. The preparation method is simple and convenient, production conditions and requirements are simple, and according to the method, sensitization-free and activation-free effects are achieved, the production cost is low and the environmental pollution is low.

Description

technical field [0001] The invention belongs to the field of preparation of silver-plated fabrics, in particular to an electroless silver-plating method for sensitization-free activation of nylon substrates. Background technique [0002] At present, the electroless plating substrate has been gradually extended to the non-metallic field. First, an oxide film is formed on the non-metallic surface through sensitization, and then after activation, a redox reaction occurs on the non-metallic surface, so that the non-metallic surface can be formed on the non-metallic surface. Catalytically active noble metal particles. This process is cumbersome, and the degree of washing is difficult to control, and the waste liquid of washing contains heavy metal ions, which is easy to cause environmental pollution. [0003] Therefore, it is necessary to develop a new chemical plating process free of sensitization and activation, which can simplify the production process and reduce costs on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/00D06M15/333D06M15/03D06M11/83D06L1/12C23C18/44C23C18/20D06M101/34
Inventor 刘保江余秋婷赵强强金雅雯张俊胡春艳高品
Owner DONGHUA UNIV
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