图片名称

The effect of surface plasma treatment equipment treatment process on bamboo surface wettability

Keywords:

plasma,treatment,equipment

Published on:

14 Aug,2021

The effect of surface plasma treatment equipment treatment process on bamboo surface wettability:
plasma treatment equipmentAt present, my country's forest resources are severely lacking, and the per capita forest area and forest accumulation are only 1/4 and 1/7 of the world per capita level, respectively. The bamboo resources in my country are very rich. The bamboo forests are planted in a wide area and there are many varieties in the country, which is known as the "Bamboo Kingdom". Bamboo grows fast, has a short yield cycle, is green, environmentally friendly, renewable, and has excellent material properties. Many uses can replace wood. "Substituting bamboo for wood" can effectively alleviate the contradiction between wood supply and demand. However, due to the different properties of each part of the bamboo wall, there are still shortcomings. For example, the glue, paint, preservative, and flame retardant impregnation of bamboo green and bamboo yellow have poor effects, and they are often removed in actual production, which greatly reduces The utilization rate of bamboo material seriously restricts the industrialized production of bamboo material.
  In order to improve the wettability of each part of the bamboo wall, and make the bamboo material (especially bamboo green and bamboo yellow) to be efficiently used, the cold plasma treatment technology of surface plasma treatment equipment is introduced to modify the bamboo material. Surface plasma treatment equipment Plasma is a particle with energy. When it contacts or collides with the surface of the bamboo material, it will transfer its energy to the molecules and atoms on the surface of the bamboo material, and then produce some physical and chemical reactions on the surface of the bamboo material, thereby changing the The surface properties of bamboo including wettability.
  The wettability characterizes the difficulty and effect of the liquid wetting, spreading and adhering on the surface of the bamboo when the liquid contacts the bamboo. The research on the modification of bamboo wettability is of great significance to the post-processing of bamboo gluing, surface finishing, anti-corrosion, and flame retardant.
Plasma technology of surface plasma treatment equipment can significantly improve the wettability of bamboo green and bamboo yellow and the strength of bamboo products, increase the utilization rate of bamboo, and effectively protect forest resources. It is important for the processing and utilization of bamboo wood-based panels and other bamboo products. The theoretical significance and practical application value.
Oxygen, nitrogen and argon are used as plasma treatment gases, which can significantly reduce the equilibrium contact angle of bamboo. The order of influence is oxygen>nitrogen>argon. This is because when oxygen is used as a treatment gas, it is easy to attract people on the surface of bamboo_ Oxygen-containing polar functional groups such as OH and -COOH can promote the wetting, spreading and permeation of the phenolic resin glue on the surface of the bamboo. As an inert gas, the plasma treatment is mainly performed by etching the surface of the bamboo to improve the phenolic resin glue. The spreading and penetration rate.
The equilibrium contact angle of bamboo green bamboo meat and bamboo yellow surface will gradually decrease with the prolongation of plasma treatment time of surface plasma treatment equipment, and then become stable. This is due to the etching (surface material The removal of the polymer and the scission of the polymer molecular chain) and the increase of active groups occur simultaneously.
   Proper plasma treatment time of surface plasma treatment equipment can enable active groups to be implanted on the surface of bamboo, and the degree of etching is small, which improves the wettability of the bamboo surface.

Hot Products

Related articles