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Wood with high heat conductivity coefficient and preparation method and application thereof

A high thermal conductivity, wood technology, applied in the direction of wood treatment, wood heating, wood impregnation, etc., can solve the problems of increasing the plate processing process and the cost increase, and achieve the low price of raw materials, simple/convenient processing technology, and wide application prospects. Effect

Inactive Publication Date: 2018-08-03
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The change of the floor structure will increase the processing steps of the board, and the cost will increase greatly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This embodiment provides a kind of wood with high thermal conductivity, and its preparation method is specifically as follows:

[0019] Select a 30mm×100mm×100mm poplar wood block and dry it in an oven at 105°C for 10 hours for later use; weigh 150 grams of sodium metaaluminate and dissolve it in 350 grams of deionized water to prepare an aluminum metaaluminate with a sodium metaaluminate content of 30%. Sodium aluminate aqueous solution; place the dried wood block in the 30% sodium metaaluminate solution and soak for 15 hours; put the wood block impregnated with sodium metaaluminate into a closed system, and feed carbon dioxide at room temperature Gas, keep for 22 hours; then under the protection of nitrogen, dry at 150 ℃ for 6 hours, that is. It is 0.26Wm to measure the thermal conductivity of the wood obtained in the present embodiment -1 K -1 .

Embodiment 2

[0021] This embodiment provides a kind of wood with high thermal conductivity, and its preparation method is specifically as follows:

[0022] Select a 30mm×100mm×100mm poplar block and dry it in an oven at 110°C for 3 hours for later use; weigh 150 grams of sodium metaaluminate and dissolve it in 350 grams of deionized water to prepare an aluminum metaaluminate with a sodium metaaluminate content of 30%. sodium metaaluminate aqueous solution; place the dried wood block in the 30% sodium metaaluminate solution and soak for 3 hours; put the wood block impregnated with sodium metaaluminate into a closed system, and introduce carbon dioxide at room temperature Gas, keep for 30 hours; then under the protection of nitrogen, dry at 120 ℃ for 6 hours, that is. It is 0.23Wm to measure the thermal conductivity of the wood obtained in the present embodiment -1 K -1 .

Embodiment 3

[0024] This embodiment provides a kind of wood with high thermal conductivity, and its preparation method is specifically as follows:

[0025] Select a 30mm×100mm×100mm poplar wood block and dry it in an oven at 105°C for 10 hours for later use; weigh 200 grams of sodium metaaluminate and dissolve it in 300 grams of deionized water to prepare an aluminum metaaluminate with a sodium metaaluminate content of 40%. Sodium aluminate aqueous solution; put the dried wood block into the impregnation tank, after vacuuming, inject 40% sodium metaaluminate solution, then increase the pressure to 2MPa, the temperature is 60°C, and impregnate for 10 hours; impregnate The wooden block of sodium permetaaluminate is placed in a closed system, and carbon dioxide gas is passed through at room temperature, and kept for 24 hours; and then dried at 105°C for 5 hours under the protection of nitrogen, and the product is obtained. It is 0.37Wm to measure the thermal conductivity of the wood obtained ...

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Abstract

The invention relates to a method for preparing wood with the high heat conductivity ecoefficiency. The method comprises the steps that dried wood is soaked in a sodium metaaluminate aqueous solution;the soaked wood is subjected to standing in a confined space with acid gas led therein; and then the wood is dried. According to the method provided by the invention, the requirements for energy saving and consumption reducing during using of a heating floor can be effectively met; a treatment technology is simple, convenient and fast, efficient circulation of heat energy in the wood is promotedby effectively filling pores in the wood, and the floor heating efficiency is improved; and through attempts in intercrossed application of subjects including heat transmission science, chemistry, materials science and the like, the wood heat transmission performance is improved, and the method has wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of wood modification, and mainly relates to wood with high thermal conductivity. Background technique [0002] At present, my country's heating system mainly uses ground heating, especially low-temperature hot water ground radiation heating is widely used. Wood flooring is favored for its advantages of warm in winter and cool in summer, moderate softness and hardness of the material surface, good walking feeling, orderly fluctuation of surface texture, beautiful and natural. However, the biggest disadvantages of wooden materials as floors for ground heating are low thermal conductivity, poor thermal conductivity, poor energy regulation, high heating operation costs, and large building energy consumption. Therefore, it is imperative to effectively increase the thermal conductivity of wood materials and improve the heating efficiency of floor heating. [0003] However, the main way to improve the thermal eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/26B27K5/00
CPCB27K3/26B27K5/00B27K5/001
Inventor 张桂兰刘家磊杨鲁伟张振涛李博芦琳
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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