Preparation method of recombined bamboo with oil heat treatment for outdoor use

Abstract

The invention provides a preparing method for outdoor oil heat treatment recombined bamboo wood. The mechanical performance of the recombined bamboo wood prepared through the method is obviously improved, and the recombined bamboo wood prepared through the method has very good corrosion resisting and mold preventing properties and is good in size stability and suitable for outdoor usage. The preparing method comprises the steps that oil heat treatment is conducted, a bamboo wood sheet with the thickness ranging from 7 mm to 9 mm is immersed below the liquid level of a heat treatment tank with methylsilicone oil, the heat treatment tank is heated, the temperature of the methylsilicone oil is made to range from 145 DEG C to 200 DEG C, and insulating is conducted for 1 h-3 h; after 10 min-15 min, the methylsilicone oil in the heat treatment tank is discharged, and the sheet is taken out; grinding and fiber splitting are conducted, the sheet is ground into a bamboo bundle with the thickness ranging from 2 mm to 3 mm, the fiber of the bamboo bundle is continuous in the longitudinal direction and loose in the transverse direction to be connected in a staggered manner, and meanwhile the function of primary oil removing can be achieved; oil removing is conducted, and the bamboo bundle is subjected to further oil removing through a non-ionic surface active agent; and glue dipping, assembly and hot press are conducted, and after the bamboo bundle is immersed in glue and dried, assembly is conducted along texture, hot press is conducted, and the recombined bamboo wood is formed.

Description

technical field [0001] The invention relates to a method for preparing recombined bamboo, in particular to a method for preparing recombined bamboo with oil heat treatment for outdoor use. The recombined bamboo prepared by the method has excellent mechanical properties, good corrosion and mildew resistance, and high dimensional stability. Background technique [0002] China's bamboo forest area ranks first in the world. Abundant bamboo resources provide a reliable raw material basis for my country's processing and utilization, and my country's bamboo processing and utilization level has always been in the leading position in the world. Bamboo woven plywood, bamboo curtain plywood, bamboo laminate, bamboo plywood, bamboo floor, bamboo wood composite board and other products have been developed successively, which are widely used in construction, vehicles, packaging, decoration, furniture and other fields. [0003] However, at present, this bamboo product is prone to deformat...

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Problems solved by technology

[0003] However, at present, this kind of bamboo products are prone to deformation and mildew when used outdoors under the sun and rain.

[0004] ZL2014102465484 discloses a modified treatment method for wood and bamboo. However, after oil heat treatment of bamboo, although the anti-mold performance has been improved, due to the limitation of the hot pressing process, the degree of improvement in mechanical properties is limited.

In addition, this method uses vegetable oil for oil heat treatment. Due to the low viscosity and easy flow of vegetable oil, the oil will overflow at high temperature outdoors (the ground temperature in summer can reach 60°C-80°C), which will cause trouble for later maintenance and cause environmental damage. Pollution

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