Treatment method for controlling heat expansion and cold contraction coefficient of wood

Abstract

The invention discloses a treatment method for controlling a heat expansion and cold contraction coefficient of wood. The method comprises the following steps: S1, stacking the wood according to a principle of first heavy and then light, first thick and then thin, and placing spacers between adjacent woods; S2, putting the stacked wood into a closed wood stabilizing apparatus, wherein a temperature in the wood stabilizing apparatus is set to 190 DEG C-215 DEG C, and closing the whole circulatory system after keeping for about 2-3 h; S3, closing the whole circulatory system when a temperature and a water content in the wood stabilizing apparatus are kept standards and unchanged, naturally cooling the wood for 24 h to normal temperature in the stabilizing apparatus, and then opening the treated wood; and S4, putting the wood subjected to stabilizing treatment into a production line for waiting for production. The treatment method can reduce hydroxyl groups in the wood by 95%-99% or more, reduces the thermal expansion and cold contraction coefficient of the wood, and greatly improves stability and a service life of wood products.

Description

Technical field [0001] The invention relates to a device and a processing method for controlling the coefficient of thermal expansion and contraction of wood. Background technique [0002] Wood products are widely used in many fields such as daily life, building materials, and artworks. From the place of production to the process of processing, the internal porous structure of wood has always been changed, such as cell cavities, pores, fiber gaps and other large and small pores, and the special hydrophilic genes of wood make it easy for wood in environmental scenes. Affected by temperature and humidity, some internal structural forms are combined with external things, causing changes in pores, thereby changing the shape and performance of the wood's internal and external appearances. Accompanied by changes in temperature and humidity, the gaps between the gaps will expand unevenly. , It is easy to cause wood thermal expansion and contraction, surface cracking, deformation, warpi...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect that wood furniture is easy to crack and deform under the action of thermal expansion and contraction in the prior art, and to provide a device and treatment method for controlling the coefficient of thermal expansion and contraction of wood

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