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Energy-storing wood taking carbon black loaded titanium dioxide as heat-conducting filler

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

Inactive Publication Date: 2019-10-15
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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  • Energy-storing wood taking carbon black loaded titanium dioxide as heat-conducting filler

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An energy storage wood uses carbon black-loaded titanium dioxide as a heat-conducting filler, comprising the following steps:

[0023] (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

[0030] An energy storage wood uses carbon black-loaded titanium dioxide as a heat-conducting filler, comprising the following steps:

[0031] (1) Select Chinese fir, and select mature sapwood above breast height, with specifications of 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 ...

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Abstract

The invention discloses an energy-storing wood taking carbon black loaded titanium dioxide as a heat-conducting filler. Carbon black serves as a core and is subjected to cationic modification, titanium dioxide is subjected to anionic modification, the carbon black and the titanium dioxide are blended, the titanium dioxide is deposited on the surface of the carbon black through positive and negative attraction effect, and heat-conducting composite particles with all-optical-section response are prepared. The heat-conducting composite particles serving as the heat-conducting fillers as well as the prepared organic solvent and polyethylene glycol 800 are completely mixed, and wood is dipped with a phase-change material by a vacuum-pressurized full cell method, so that novel phase-change energy-storing wood capable of adjusting room temperature is prepared. The energy-storing wood combines the advantages of ultraviolet catalytic activity, corrosion resistance and stability of the titaniumdioxide as well as high heat conductivity and full-waveband light-absorbing ability of the carbon black, improves the heat-conducting efficiency and the ultraviolet light shielding ability of the phase-change material and is favorable for building low-carbon life.

Description

[0001] (1) Technical field [0002] The invention relates to an energy storage wood, which uses carbon black loaded 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 is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/08B27K3/52B27K3/50B27K5/04B27K3/02B27K3/00C09K5/06
CPCB27K3/007B27K3/0207B27K3/08B27K3/50B27K3/52B27K5/04C09K5/063
Inventor 李彦辰刘毅赵俊淇夏容绮张伟业杨颖妮王蓓蓓方晓阳
Owner BEIJING FORESTRY UNIVERSITY
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