Preparation method of anisotropic heat-conducting phase-change energy-storage wood

A phase-change energy storage, anisotropic technology, applied in the direction of wood impregnation, wood treatment, impregnated wood, etc., can solve the problems of inefficient utilization and qualitative transmission of heat energy, poor high thermal conductivity, etc., to achieve efficient utilization and qualitative The effect of transmission, high thermal conductivity, good compatibility

Pending Publication Date: 2022-05-24
ZHEJIANG FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current phase-change energy storage wood still has the problems of poor thermal energy storage ability of wood, poor anisotropic high thermal conductivity, and inefficient utilization and qualitative transmission of thermal energy.

Method used

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  • Preparation method of anisotropic heat-conducting phase-change energy-storage wood
  • Preparation method of anisotropic heat-conducting phase-change energy-storage wood
  • Preparation method of anisotropic heat-conducting phase-change energy-storage wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: a kind of preparation method of anisotropic thermal conductivity phase change energy storage wood, carry out according to the following steps:

[0034] Step 1. Mix 7g of melamine, 8g of urea, 28g of formaldehyde and 35ml of deionized water by mass, add triethanolamine to adjust pH to 8.5-9, and then heat at 80°C for 35 minutes to obtain a prepolymer;

[0035] Step 2: Dissolve 8g of styrene-maleic anhydride copolymer (SMA) and 2g of NaOH in 90ml of deionized water by mass, and heat at 80° C. for 70 minutes to obtain a yellow and transparent SMA solution;

[0036] Step 3, adding the SMA solution of 10g and the n-octadecane of 8g to the prepolymer in step 2 by mass, and emulsifying for 35 minutes at 6500 rpm to obtain a phase change emulsion;

[0037] Step 4, heating the phase change emulsion at 55°C for 25 minutes, then heating to 75°C for 3 hours to obtain a phase change microcapsule suspension;

[0038] Step 5. Put the wood whose length×width×height is 20...

Embodiment 2

[0041] Embodiment 2: a kind of preparation method of anisotropic thermal conductivity phase change energy storage wood, carry out according to the following steps:

[0042] Step 1. Mix 9g of melamine, 6.5g of urea, 32g of formaldehyde and 28ml of deionized water by mass, add triethanolamine to adjust pH to 8.5-9, then heat at 78 ° C for 35 minutes to obtain a prepolymer ;

[0043] Step 2: Dissolve 12g of styrene-maleic anhydride copolymer (SMA) and 3g of NaOH in 85ml of deionized water by mass, and heat at 82° C. for 65 minutes to obtain a yellow and transparent SMA solution;

[0044] Step 3, adding the SMA solution of 8g and the n-octadecane of 10g to the prepolymer in step 2 by mass, and emulsifying at 5500 rpm for 40 minutes to obtain a phase change emulsion;

[0045] Step 4, heating the phase change emulsion at 50°C for 35 minutes, then heating to 65°C for 2.5 hours to obtain a phase change microcapsule suspension;

[0046] Step 5. Put the wood whose length×width×height ...

Embodiment 3

[0049] Embodiment 3: a kind of preparation method of anisotropic thermal conductivity phase change energy storage wood, carry out according to the following steps:

[0050] Step 1. Mix 7.7g of melamine, 7.4g of urea, 29.9g of formaldehyde and 30ml of deionized water in parts by mass, add triethanolamine to adjust the pH to 8.5-9, and then heat at 80°C for 30 minutes to obtain a aggregate;

[0051] Step 2: Dissolve 10 g of styrene-maleic anhydride copolymer (SMA) and 3 g of NaOH in 87 ml of deionized water by mass, and heat at 80° C. for 60 minutes to obtain a yellow and transparent SMA solution;

[0052] Step 3, add the SMA solution of 9g and the n-octadecane of 8g to the prepolymer in step 2 by mass, and emulsify at 6000 rpm for 30 minutes to obtain a phase change emulsion;

[0053] Step 4, heating the phase change emulsion at 50°C for 30 minutes, then heating to 70°C for 2.5 hours to obtain a phase change microcapsule suspension;

[0054] Step 5. Put the wood whose length×wi...

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Abstract

The invention discloses a preparation method of anisotropic heat-conducting phase-change energy-storage wood, which comprises the following steps: synthesizing a microcapsule wall material by using melamine, urea and formaldehyde as raw materials, preparing a phase-change microcapsule by using n-octadecane as a core material, dipping the phase-change microcapsule into wood, and carrying out vacuum drying and curing to obtain the phase-change energy-storage wood. And then the phase change energy storage wood is soaked in a copper acetate solution, and secondary vacuum soaking is carried out, so that the phase change microcapsules can be successfully soaked into the wood and are mainly distributed in a guide pipe of the wood. According to the method, after a copper complex is reduced in wood, cell cavities of the wood are effectively filled with microcapsules coated with copper, no obvious interface transition area exists between the wood and copper, the wood and the copper have good compatibility, in-situ deposition of copper ions in wood conduits and fibers is achieved, and the copper ions in the wood conduits and the fibers are removed; and wood is endowed with excellent heat and energy storage capacity and anisotropic high heat conduction performance, and efficient utilization and qualitative transmission of heat energy are achieved.

Description

technical field [0001] The invention relates to the application field of novel energy storage materials, in particular to a preparation method of anisotropic heat-conducting phase-change energy storage wood. Background technique [0002] With the increasing depletion of the global energy crisis and the increasingly serious environmental problems such as the greenhouse effect and the hole in the ozone layer caused by the excessive development and use of energy, the development of green and low-carbon building energy-saving materials has gradually attracted people's attention. Phase change energy storage material refers to a substance that changes its physical state with the change of ambient temperature, thereby absorbing or releasing a large amount of latent heat, and its own temperature remains unchanged. It is an excellent green energy-saving material, so it is widely used in energy saving, solar energy development and electronic equipment. According to the phase change s...

Claims

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Application Information

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IPC IPC(8): B27K3/08B27K3/50B27K3/52B27K5/00C09K5/06
CPCB27K3/08B27K3/50B27K3/52B27K5/00C09K5/063Y02E60/14
Inventor 郭玺林贤铣孙伟圣范毜仔翁露陈欣妤
Owner ZHEJIANG FORESTRY UNIVERSITY
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