Once chlorophyll is destroyed, the green color of the bamboo stalk will fade quickly after cutting. This is because the magnesium ion in the molecule oxidizes and loses its ability to bond with its atoms. If it is replaced by copper ions (such as copper chlorophyll) Magnesium ions, so that it is not affected by oxidation, bamboo surface can remain green. Based on this reasoning, can be treated with surfactant bamboo, put it in 0.5% copper sulfate solution, at a pressure of 0.005 ~ 0.01MPa cans After immersed for 2~3h, dry at atmospheric pressure for 12h and place it in a plastic resin monomer (molecular weight 500~1000) with a small amount of initiator, and dip it in a tank of 0.005~0.01MPa for 1h. Pressure immersion 4h, after removal and then placed at 40 ~ 50 °C for 12h, so that the monomers are completely polymerized. The treated bamboo can not only maintain the green surface of the new felling bamboo, but also durable in nature adverse environment, in addition, with protection It was determined that K-133, copper naphthenate, and copper sulphate combined with strong microwaves to protect bamboos for 3 min. The bamboo's green fastness, durability and weather resistance were greatly improved.
Bamboo and wood furniture due to the special nature of bamboo, coloring will make the product more artistic charm. Bamboo coloring with hot oil coloring, non-burning gas pressure heating coloring, carbonization coloring acid treatment coloring method.
1) Hot oil coloring Put the dried bamboo material into hot oil at 200°C, and take out the bamboo material with a shiny purple red color, and the processing performance is good. It can be used as a craft material, or design blank for bamboo products.
2) Pressurized and heated gasification of non-combustible gas First put bamboo into a pressure vessel, draw out the air inside the vessel, inject inert gas such as argon and helium, and then make any of the non-combustible gases such as sulfur dioxide, nitrogen, and carbon dioxide. It can be a mixture of two or more kinds of non-combustible gas, so that these gases in the pressure vessel account for more than 90%. Then, the vessel is heated to 100 to 150°C, and pressure of 7.06 to 9.80 MPa is applied at the same time, and the pressure can be maintained for more than 30 minutes. All are purple and glossy bamboo.
3) Carbonization coloring When bamboo is immersed in polyhexanol (molecular weight 1500) solution and heated, the bamboo material is brownish red, and the influence of unfavorable factors such as oxidation or cracking of bamboo material is minimized, and the bamboo material is uniform from the surface to the core. Coloring, maintaining good processing performance for the production of higher value handicrafts to provide convenience. Carbonization coloring heating temperature 60 ~ 200 °C, the heating time should be depending on the degree of carbonization coloring, bamboo use purposes, bamboo in the processing tank In the case of immersion, etc., appropriate additions and deletions are made. This treatment section influences the mechanical processing properties of bamboo, is non-toxic, and can maintain a long-term treatment effect.
4) Acid treatment coloring Chemical treatment of bamboo products using strong acid can make the bamboo products appear bronze. This treatment method belongs to the category of chemical dyeing. After this coloring treatment, products made of bamboo and bamboo grains are antique and rich. National flavor. Specific operation: Take 100kg of clear water, 1kg of sulfuric acid or nitric acid, mix the solution in an acid-resistant container, immerse bamboo products such as bamboo razor or bamboo granules in the solution, and lift it after 10 to 15 minutes, then place it in saturated lime solution. In the treatment of 30 ~ 40min, rinse with water after removal, can be used after drying. Product color depth, can be adjusted by the concentration of bamboo products and soaking time to control.