Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High temperature water heat processing method for timber

A technology of high-temperature heat treatment and heat treatment method, applied in wood treatment, wood treatment details, humidity-conditioning wood, etc., can solve problems such as cracking, discoloration, deformation, etc., to improve stability, reduce water absorption, weather resistance and corrosion resistance Enhanced effect

Active Publication Date: 2006-12-13
HUNAN TAOHUAJIANG BAMBOO SCI & TECH CO LTD
View PDF0 Cites 43 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome defects such as deformation, cracking, decay, and discoloration that are prone to occur in the use of wood, and to provide a method that can improve the dimensional stability, corrosion resistance and weather resistance of wood, so that after treatment The wood can be widely used in the high-temperature hydrothermal treatment method of wood in an environment with relatively large changes in humidity and temperature

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Put the wood with a thickness of 20mm and a length of 1000mm in a high-temperature heat treatment furnace, raise the temperature of the high-temperature heat treatment furnace to 130°C, measure the moisture content of the wood to 4.5%, and then raise the temperature to 180°C. After the treatment, reduce the temperature of the high-temperature heat treatment furnace. When the temperature drops to 95°C, treat with steam, adjust the moisture content of the wood to 9%, and reduce the temperature of the high-temperature heat treatment furnace to 40°C. Equilibrate in atmospheric environment for 15 days.

Embodiment 2

[0016] Put a wood with a thickness of 40mm and a length of 1000mm in a high-temperature heat treatment furnace, raise the temperature of the high-temperature heat treatment furnace to 130°C, measure the moisture content of the wood to 4.8%, and then raise the temperature to 240°C. After the treatment, reduce the temperature of the high-temperature heat treatment furnace. When the temperature drops to 95°C, treat with steam, adjust the moisture content of the wood to 9%, and reduce the temperature of the high-temperature heat treatment furnace to 40°C. Equilibrate in atmospheric environment for 15 days.

[0017] The wood that embodiment 1,2 is aimed at is the wood that has dried.

Embodiment 3

[0019] The wood targeted in this embodiment is wood with relatively high humidity (greater than 15%).

[0020] Dry the wood with a thickness of 30 mm and a length of 1000 mm to a moisture content of 14%, place the dried wood in a high-temperature heat treatment furnace, raise the temperature of the high-temperature heat treatment furnace to 140°C, and reduce the moisture content of the wood to 4.8%. Then raise the temperature to 220°C and keep it at this temperature for 6 hours; after the treatment, reduce the temperature of the high-temperature heat treatment furnace. After the temperature of the high-temperature heat treatment furnace reaches 40°C, it is out of the furnace; it is equilibrated in the atmospheric environment for 15 days.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for treating wood at high temperature and with hot water, comprising following steps: (1) putting wood in high temperature furnace; increasing temperature at furnace to 120-150 Deg. C and keeping temperature; (2) increasing temperature to 180-240 Deg .C when the water content of wood reduced to lower than 5%; keeping temperature and the time is 0.5-3 hours according to wood thickness per cm; (3) reducing temperature at furnace, treating wood with steam or hot water when temperature is reduced below 100 Deg. C to reduce wood water content to 7-10%; (4) reducing temperature continuously and getting wood out of furnace when the temperature inside wood is reduced to about 40 Deg. C; (5) balancing at atmosphere for more than 15 days. The invention can increase size stability, rotproofness and weather ability of wood, and the wood can be applied in environment with large change in humidity and temperature.

Description

technical field [0001] The invention relates to a high-temperature hydrothermal treatment process for wood, which is suitable for high-temperature hydrothermal treatment of wood, so as to improve the dimensional stability, weather resistance and corrosion resistance of wood. Background technique [0002] For a long time, whether it is compared in terms of volume or quality, wood has always ranked first among the four major building materials. It has a series of advantages such as renewable, easy processing, and natural beautiful patterns, and is widely used in construction, furniture manufacturing, and interior decoration. But at the same time, as a natural green and environmentally friendly material, wood also has some natural defects, such as wood has anisotropy and poor weather resistance. Therefore, when the wood is used for a long time in an environment with large changes in humidity and temperature, due to the anisotropy of shrinkage, it is easy to cause various defec...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B27K5/04B27K1/00
Inventor 李贤军刘永前
Owner HUNAN TAOHUAJIANG BAMBOO SCI & TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com