Energy-storage wood taking titanium dioxide loaded rhodamine red as heat conducting filler

A technology of titanium dioxide and thermally conductive fillers, applied in wood treatment, wood impregnation, wood impregnation, etc., can solve the problems of easy leakage, poor thermal stability, and low thermal conductivity during the phase change process, and achieve easy control of reaction conditions and good corrosion resistance , the effect of convenient operation

Inactive Publication Date: 2019-11-08
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when polyethylene glycol is used alone, it also has defects such as low thermal conductivity, poor thermal stability, and easy leakage during the phase transition process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An energy storage wood uses titanium dioxide-loaded rhodamine red as a heat-conducting filler, comprising the following steps:

[0021] (1) Select fast-growing poplar, and select mature sapwood above breast height, with specifications of length 10m×width 10mm×thickness 10mm, without defects such as cracking, decay and discoloration. After weighing, place the wood specimen in deionized water and vacuumize (-0.1MPa, 1h) to discharge the air inside the wood. Pour 500ml of deionized water into the beaker, then add 40g of sodium hydroxide and 63g of sodium sulfite, heat to 95°C and cook the wood in the mixture for 24 hours (the mixture should be replaced 3-4 times during the process). Submerge under solution. Finally, place the cooked wood in ethanol boiling liquid at 78°C for 1 hour to replace the moisture in the wood. Weigh 90ml of ethanol and 10ml of deionized water, add 3.6g of silane coupling agent KH550, drop a small amount of oxalic acid to adjust the pH value to 3,...

Embodiment 2

[0028] An energy storage wood uses titanium dioxide-loaded rhodamine red as a heat-conducting filler, comprising the following steps:

[0029] (1) Select paulownia wood, select mature sapwood above breast height, the specification is 30mm long x 30mm wide x 20mm thick, free from defects such as cracking, decay and discoloration. After weighing, place the wood specimen in deionized water and vacuumize (-0.1MPa, 1h) to discharge the air inside the wood. Pour 1000ml of deionized water into the beaker, then add 80g of sodium hydroxide and 126g of sodium sulfite, heat to 95°C and cook the wood in the mixture for 24 hours (the mixture should be replaced 3-4 times during the process). Submerge under solution. Finally, place the cooked wood in ethanol boiling liquid at 78°C for 1 hour to replace the moisture in the wood. Weigh 90ml of ethanol and 10ml of deionized water, add 3.6g of silane coupling agent KH550, drop a small amount of oxalic acid to adjust the pH value to 3, then hyd...

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PUM

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Abstract

The invention discloses an energy-storage wood taking titanium dioxide loaded rhodamine red as a heat conducting filler. The heat conducting filler is a composite material with a core-shell structure.Nano titanium dioxide particles with average particle diameters of 30-40 are taken as core bodies and rhodamine red deposited on the surface is used as shell bodies to prepare heat-conducting composite nano particles. Then the heat-conducting composite nano particles are used as the heat conducting filter to be fully mixed with a prepared organic solvent and polyethylene glycol 800 to obtain a phase-change material, and a wood is soaked with the phase-change material by adopting a vacuum pressurization full-cell process to prepare the novel phase-change energy-storage wood capable of adjusting the room temperature. According to the invention, the rhodamine red is adsorbed under catalysis of ultraviolet light by utilizing the characteristics of high chemical stability and photocatalytic activity of titanium dioxide, so that the light absorption wavelength of titanium dioxide is expanded from the ultraviolet light region to the visible light region, and photothermal response capabilityis improved. The prepared energy-storage wood can adjust the room temperature and air quality, is beneficial to constructing low-carbon life, and thus has a better application prospect.

Description

[0001] (1) Technical field [0002] The invention relates to an energy storage wood which uses rhodamine red loaded on titanium dioxide as a heat-conducting filler, and belongs to the research field of phase-change energy storage new materials. [0003] (2) Background technology [0004] Due to the continuous reduction of non-renewable resources such as fossils, the development of renewable energy sources such as solar energy, wind energy, and tides is particularly important. In the field of renewable energy, solar energy is closely related to people's lives. Phase change energy storage technology can be used to convert solar energy into heat energy necessary for human life, thereby reducing the consumption of fossil energy. In the field of phase change energy storage technology, solid-liquid phase change is the most widely used. It uses materials with high phase change enthalpy to store and release heat according to changes in ambient temperature. When the external temperature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/02B27K3/08B27K3/20B27K3/36B27K3/38B27K3/50B27K3/52B27K5/04
CPCB27K3/0207B27K3/08B27K3/20B27K3/36B27K3/38B27K3/50B27K3/52B27K5/04
Inventor 李彦辰刘毅张伟业王蓓蓓赵俊淇夏容绮方晓阳杨颖妮
Owner BEIJING FORESTRY UNIVERSITY
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