Hyperchromic and modified processing method for poplar

Abstract

The invention discloses a hyperchromic and modified processing method for a poplar. According to the processing method, a high-temperature treatment utilizing water vapor prepared from dye is performed, so that dyeing effect is improved due to the fact that cell gaps are opened; a gradient treatment is performed, so that crack of a wood is not prone to be caused; capillary tubes and pit systems ofthe wood are made through through pressure action according to a supercritical treatment method; on the other hand, a melamine urea-formaldehyde resin mixed solution is used as a fluid, so that an anti-loss performance of a dyeing agent is improved; a dyeing technology is greatly simplified after the dyeing and the performance modification are combined and the poplar has relatively high strengthand good decoration performance; and finally a heat-moisture treatment on the wood is carried out, so that a fixation rate is improved. The processing method has the advantages of being small in equipment investment, small in production site, simple in technology and short in processing period. The thickness of the dyed wood is not limited. Wood deformation, cracking, chromatic aberration and thelike are avoided in a producing process and production quality is high. Size stability and corrosion resistance of the dyed wood are improved, and the application prospect is wide.

Description

technical field [0001] The invention relates to the technical field of wood treatment, in particular to a treatment method for color enhancement and modification of poplar. Background technique [0002] With the sharp decline of natural forest resources and the increase in the consumption of timber resources, the contradiction between supply and demand of timber has become increasingly acute. In order to alleviate this contradiction, it is necessary to vigorously develop and efficiently utilize plantation timber resources. my country's plantation area ranks first in the world, and poplar accounts for about 20% of the total plantation area. It is an important industrial material in my country. However, due to the low density, low strength, unstable size, monotonous color, and The shortcomings of unclear patterns and poor decoration greatly limit its application. Wood dyeing is an important aspect to improve the visual characteristics of wood. Wood dyeing refers to the combina...

AI Technical Summary

Problems solved by technology

my country's plantation area ranks first in the world, and poplar accounts for about 20% of the total plantation area. It is an important industrial material in my country. However, due to the low density, low strength, unstable size, monotonous color, and The shortcomings of unclear patterns and poor decoration greatly limit its application. Wood dyeing is an important aspect to improve the visual characteristics of wood. Wood dyeing refers to the combination of wood and stains through physical and chemical methods to produce the desired color and Effect process, it can not only improve the original physical and mechanical properties and chemical properties of wood such as hardness, strength, wear resistance and dimensional stability, but also make the wood obtain a solid color, and make the wood texture more clear and pleasing to the eye, enhancing The original decorative effect of wood improves the physical and mechanical properties and chemical properties, expands the use range of poplar, and increases the added value of products

However, the current wood dyeing method has a poor color rate, and the dyeing procedure is complicated, the cost is high, and the waste produced is harmful to the environment and the human body.