How does the wood bleach?
When certain wood or wood products are to be light-colored and transparent, the natural uneven color of the wood and the stain caused by other causes must be removed by bleaching. Bleaching methods are mostly applied with chemical drugs on the wood surface. The bleaching process can be carried out on the entire surface of wood or wood products. More in the local color depth of the wood surface. Bleaching Method The following drugs can be used to bleach wood with a bleach solution.
Second, sodium bisulfite, first with the following two solutions. 1, the sodium bisulfite dubbed saturated solution. 2, in 1000 ml of water dissolved 6.3 grams of crystalline potassium permanganate. When used, first potassium permanganate solution coated on the wood surface, about 5 minutes, slightly dry, and then coated sodium bisulfite solution, repeat the above operation until the wood white. [PAGE] Third, bleaching powder, it has the following two methods of use. 1, the first dubbed 5% potassium carbonate and sodium carbonate (1: 1) 1 liter of aqueous solution, then add 50 grams of bleaching powder, with this solution brush the surface of wood, to be bleached with 2% soapy water or dilute hydrochloric acid solution clear...
Hydrogen peroxide, also known as hydrogen peroxide, which is the application of more bleaching effect of a better bleach. Commonly used concentration of 15-30%, it will be applied to the surface of the wood can release a strong force of oxygen, decomposition of wood pigment, so that white, in order to accelerate the release of oxygen, hydrogen peroxide can be mixed with ammonia, with this Bleaching agent wet the surface of the wood, after ten minutes, with cold water to bleach off on it. Ammonia can not be added too much, under normal circumstances, 25% of the amount of ammonia added about 5-10% of hydrogen peroxide.
