Antiseptic wood is a kind of product which is widely used to make flower racks and flowerpots in modern society. It has good antiseptic effect and is loved by people. At the same time, it is easy to change color in the process of using. Do you know how to deal with it? Let's have a brief look at Jinan antiseptic wood weaving tape
There are many reasons for wood discoloration, which are mainly internal and external factors. The first thing to say is external factors: when the wood is affected by some external environment, the texture on the surface is loose, the texture is rough, and even some adhesive fibers on the surface are lost. Cracks or brittle fragments appear on the surface, which will lead to discoloration
The internal factors that cause wood discoloration are: the wood is composed of cellulose, hemicellulose, lignin and a small amount of extract, which not only includes the chromogenic groups such as carbonyl carboxyl unsaturated double bond and conjugated system, but also includes color supporting groups such as hydroxyl group.
Photochromism: some substances in wood absorb light with wavelength greater than 290 nm, and then form chemical bonds of photochromism, resulting in the change of wood color. The avoidance of photochromism: interval ultraviolet and UV; change the structure of light absorption components in wood, damage the structure of materials involved in discoloration, so as to block oxygen and trap atomic oxygen, and capture free radical extraction solvent
Elimination of photochromism: in order to eliminate the photochromism and recover the original normal wood color, the following two methods can be used: to treat the wood with peroxide or sodium chlorite and other oxidizing bleaching agents to differentiate and damage the hair color structure system of the wood surface. Remove by sanding or planing with sandpaper. The surface of discolored wood can be coated with corresponding dyes or pigments.