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In the course of the study as the main materials to choose oak wood dyeing experiments, deal with to temperature, before ultrasonic oscillations time, microwave drying time as the main factors of orthogonal test, the dyeing process to dye concentration, temperature, dyeing time as the main factors of orthogonal test, the active dyes used to search for the best wood dyeing process. Wood products raw materials from the forest resources .However, because human woodiness product special love, the increasing demand, leading to a global forest resources excessive logging, natural forest resources serious damage. Wood dyeing is dye and wood occur chemical or physical chemical combination, make lumber has certain fast color processing process, is to improve the wood surface quality, improve wood visual characteristics and an important means of improving wood added value can effectively solve the existing ,in the wood dyeing technology of the dyeing depth color fastness (resistance to erosion resistance and light fastness) problem. Materials and methods Materials and equipment Instrument Electric constant temperature water bath, AL204 electronic balance (one over ten thousand), spectrophotometer, etc. Reagent Reactive dye red blue yellow, accelerating agent sodium sulphate Na2SO4·10H20, fixing agent, sodium hydroxide: are chemically pure. Test Materials Oak thickness 3 mm, sample length-width 10 mmx10mm. Reactive dye performance and selected. 1) Reactive dye structure, generally contain sulfonic group (S03Na), because of its water solubility can are quite good, to hard water have higher stability. 2) Reactive dye to fiber with low affinity, high permeability, so levelling performance is good. Because of its molecular is lesser, can quickly into the fiber interior. 3) Reactive dye dyeing, with fiber up chemical integration function, dye fixation after basically has become part of the fiber, so wash rubbing etc fastness are quite good. This paper selected M type reactive dyes on the wood for dyeing. Former processing experiment on the wood dyeing performance influence Dye ratio With black walnut timber for target samples dyeing experiments, the color of the dye matching: blue, red, yellow = 2:2:1, dye concentration is 1% (dye on the wood heavy), bath ratio of 1:20. Dyeing process Preparation→dyeing→ fixation→ stoving. Pretreatment experiment Will test materials into the beaker, bath ratio , sodium hydroxide dosage 8 g/L, dipping time 8 h, respectively according to the above-mentioned experimental factors on 9 group orthogonal experiments, the best dye penetrant depth group. Dyeing conditions: dyeing temperature of 70 ~ 80, dyeing time 8 h, accelerating agent sodium sulphate 40 g/L fixing agent 10 ml. This experiment investigated three factors factors A (temperature) factor B (ultrasonic oscillations time) factors C (microwave drying time). 1423 2nd International Conference on Electronic & Mechanical Engineering and Information Technology (EMEIT-2012) Published by Atlantis Press, Paris, France.

Reactive dyes on the wood veneer dyeing research