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Activation technique for lumber chemical nickel plating

A technology of electroless nickel plating and wood, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve problems such as strength reduction, and achieve the effects of low price, cost reduction, and simple preparation

Inactive Publication Date: 2008-09-24
INNER MONGOLIA AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above two activation processes are not suitable for the chemical nickel plating process of wood, because when the wood is placed in air or oxygen medium and heated to 180-200 ° C, the chemical components of the wood begin to decompose and generate gas, which makes the strength of the wood itself reduce

Method used

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  • Activation technique for lumber chemical nickel plating
  • Activation technique for lumber chemical nickel plating

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Embodiment 1

[0018] First use a sander to smooth the burrs and burrs of the wood, then immerse the polished wood in water at 90°C, boil for 10 minutes, and dry at 100±2°C for 2 hours. Nickel sulfate is dissolved in the distilled water that has added hydrochloric acid (concentration is 37%), is mixed with the acid solution of nickel sulfate, is A liquid, and the weight ratio of nickel sulfate, hydrochloric acid, distilled water is: 0.004: 0.005: 1; Sodium is dissolved in distilled water added with sodium hydroxide to prepare an alkaline solution of sodium borohydride, ie liquid B. The weight ratio of sodium borohydride, sodium hydroxide and distilled water is: 0.016:0.005:1. Immerse the pretreated wood in liquid A for 5 minutes, take it out and dry it until there is no droplet on the surface, and then spray the liquid B in the atomizer evenly on the surface of the wood soaked in liquid A to complete the activation of the wood. After activation After the wood is rinsed with distilled water, ...

Embodiment 2

[0020] First use a sander to smooth the burrs and burrs of the wood, then immerse the polished wood in water at 80°C, boil for 15 minutes, and dry at 100±2°C for 2 hours. Dissolve nickel sulfate in distilled water that has added hydrochloric acid (concentration is 37%), be mixed with the acid solution of nickel sulfate, i.e. liquid A, the weight ratio of nickel sulfate, hydrochloric acid, distilled water is 0.012: 0.004: 1; Add sodium borohydride Dissolved in distilled water added with sodium hydroxide to prepare an alkaline solution of sodium borohydride, ie liquid B, the weight ratio of sodium borohydride, sodium hydroxide and distilled water is 0.008:0.004:1. Immerse the pretreated wood in liquid A for 3 minutes, take it out and dry it until there is no droplet on the surface, then spray the liquid B in the atomizer evenly on the surface of the wood soaked in liquid A to complete the activation of the wood. After activation After the wood is rinsed with distilled water, the...

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Abstract

The invention discloses an activation technology for the chemical nickel plating of wood. Activation liquid consists of A liquid and B liquid. Nickel vitriol is dissolved in the distilled water added with hydrochloric acid to prepare nickel vitriol liquid, namely the A liquid; sodium borohydride is dissolved in the distilled water added with sodium hydroxide to prepare the alkaline liquid of the sodium borohydride, namely the liquid B. The wood is immerge in the A liquid and is taken out to be dried, the liquid B is sprayed uniformly on the surface of the wood to activate the wood. The activated wood after being rinsed by distilled water can be treated by the chemical nickel plating technology on the surface; after being plated, the wood after being washed for a plurality of times is arranged in a drying box for drying. The material of the activation liquid of the activation technology has lower price, is simple to be prepared, can not lose effect after a long assembly time; besides, the activation technology can replace the activation technology of a noble metal Pd. The activation technology omits the working procedure of using an organic solvent to treat the surface of the wood, thus being able to further reduce the cost of chemical nickel plating of wood. The invention is extremely suitable for the chemical nickel plating of large wood product, is easy to realize the production line manufacture of a factory and can also be used for the activation of chemical nickel plating of other non-metal materials.

Description

technical field [0001] The invention relates to an electroless nickel plating method for non-metallic materials, in particular to an activation process for wood electroless nickel plating. Background technique [0002] In recent years, many scholars have studied the electroless nickel plating of wood. Wood is a non-metallic material, and its surface does not have self-catalytic properties. Therefore, electroless nickel plating on the surface of wood requires surface pretreatment like other non-metallic materials. One of the most critical is the activation process. The activated wood can deposit the activation center of catalytic electroless nickel plating on its surface, and then the electroless nickel plating can be carried out. The traditional wood electroless nickel plating activation process generally adopts the precious metal palladium activation process. For example, Huang Jintian (Preparation of wood electroless nickel plating and wood electromagnetic shielding mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/30C23C18/32
Inventor 黄金田高岗强
Owner INNER MONGOLIA AGRICULTURAL UNIVERSITY
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