New method for dyeing wood chips used as ground coverings of urban landscapes

Abstract

The invention relates to a new method for dyeing wood chips with an environment-friendly effect and an excellent color effect. The method is characterized by adopting a two-step two-bath process and comprising the steps of carrying out bottoming dyeing on wood chips with a small amount of acid dye by a dip dyeing method and then performing surface coloring on the wood chips subjected to bottoming dyeing with red iron powder (iron trioxide), an adhesive and the like by a dip dyeing method. Therefore, the dyed wood chips have uniform color and high color fastness, and even if the red iron powder attached onto the surface of the wood chips falls off when the wood chips are used, the wood chips still have basic color and the landscaping effect is almost not influenced. With the dyeing method, the wood chips are brownish red, and the color is bright and uniform and has high fastness; less organic dye is used, the dyeing process is simple, the production cost is low, and industrial promotion is facilitated; besides, as less organic dye is only used and is coated with the red iron powder and the adhesive, the organic dye is unlikely to fall off and cannot cause environment pollution.

Description

technical field [0001] The invention relates to the field of landscaping, in particular to a dyeing method for an environment-friendly organic covering. Background technique [0002] In recent years, with the rapid development of my country's economy and society and the continuous improvement of urbanization level, people's demand for improving and beautifying the environment has become more and more urgent. There has been an upsurge of urban forest and green space construction in many places, especially in economically developed areas such as Beijing and Shanghai. The investment and construction of urban green space is increasing, and newly-built forest green spaces abound in urban areas and suburban areas. However, a problem that cannot be ignored is that there are generally bare plots in urban green spaces, such as planting pits at the base of urban street trees, the ground surface under the canopy of shrubs or tall trees, and the soil surface between flowers of sparsely p...

AI Technical Summary

Problems solved by technology

When inorganic dyes or paints are used, they are difficult to adhere to the surface of wood chips, resulting in problems such as uneven dyeing and poor fastness, and it is difficult to achieve ideal dyeing results

Moreover, dyes or paints are easy to fall off from the surface of wood chips during use, which affects the beautification effect

When using organic dyes or paints for dyeing, not only the amount of organic dyes or paints is high, but also it is easy to cause serious water and soil pollution during use.

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