Preparation method of thermally induced flexible phase change energy storage wood

A phase change energy storage and thermal induction technology, applied in wood treatment, wood impregnation, wood impregnation, etc., can solve the problems of easy leakage, poor material flexibility, low thermal conductivity, etc., achieving low cost, long service life, and improved thermal conductivity. The effect of coefficients

Active Publication Date: 2021-08-31
ZHEJIANG FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the construction industry, phase change energy storage materials are organically combined with wood to prepare phase change energy storage wood with heat storage and heat release capabilities, which are applied to interior decoration materials such as wooden floors, wooden doors, and wooden ceilings to achieve energy saving and environmental protection. However, the existing phase change energy storage materials generally have problems such as easy leakage, poor material flexibility and low thermal conductivity.

Method used

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  • Preparation method of thermally induced flexible phase change energy storage wood
  • Preparation method of thermally induced flexible phase change energy storage wood
  • Preparation method of thermally induced flexible phase change energy storage wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: A kind of preparation method of heat-induced flexible phase change energy storage wood, balsa wood with a thickness of 2mm is processed, cut into length×width 40mm×20mm wood chips for later use, and proceed according to the following steps:

[0024] a, with N,N dimethylformamide as solvent, configure 0.08mol / L triethanolamine solution 53g and 0.3mol / L triphenylmethane triisocyanate solution 45g;

[0025] b. Add the triethanolamine solution in step a to the triphenylmethane triisocyanate solution, and stir at 75°C for 12 hours to obtain a prepolymer;

[0026] c. Add 13 g of polyethylene glycol-1500 to the prepolymer, and stir at 75° C. for 28 hours to obtain a solid-solid phase change material;

[0027] d. Put the delignified wood into the solid-solid phase change material, vacuum impregnate (0.1MPa) for 25 minutes, and then dry to obtain the finished product.

Embodiment 2

[0028] Embodiment 2: A kind of preparation method of heat-induced flexible phase change energy storage wood, balsa wood with a thickness of 2mm is processed, cut into length×width 40mm×20mm wood chips for later use, and proceed according to the following steps:

[0029] a, with N,N dimethylformamide as solvent, configure 0.15mol / L triethanolamine solution 65g and 0.2mol / L triphenylmethane triisocyanate solution 55g;

[0030] b. Add the triethanolamine solution in step a to the triphenylmethane triisocyanate solution, and stir at 65°C for 15 hours to obtain a prepolymer;

[0031] c. Add 18 g of polyethylene glycol-1500 to the prepolymer, and stir at 65° C. for 25 hours to obtain a solid-solid phase change material;

[0032] d. Put the delignified wood into the solid-solid phase change material, vacuum impregnate (0.1MPa) for 35 minutes, and then dry to obtain the finished product.

Embodiment 3

[0033] Embodiment 3: A kind of preparation method of heat-induced flexible phase change energy storage wood, balsa wood with a thickness of 2mm is processed, cut into length×width 40mm×20mm wood chips for later use, and proceed according to the following steps:

[0034] a, with N,N dimethylformamide as solvent, configure 0.1mol / L triethanolamine solution 58g and 0.27mol / L triphenylmethane triisocyanate solution 48g;

[0035] b. Add the triethanolamine solution in step a to the triphenylmethane triisocyanate solution, and stir at 70°C for 12 hours to obtain a prepolymer;

[0036] c. Add 15 g of polyethylene glycol-1500 to the prepolymer, and stir at 70° C. for 24 hours to obtain a solid-solid phase change material;

[0037] d. Put the delignified wood into the solid-solid phase change material, vacuum impregnate (0.1MPa) for 30 minutes, and then dry to obtain the finished product.

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Abstract

The invention discloses a preparation method of thermally induced flexible phase change energy storage wood, which comprises the following steps of: a, preparing 50 to 70 parts of 0.05 to 0.2 mol / L triethanolamine solution and 40 to 60 parts of 0.1 to 0.4 mol / L triphenylmethane triisocyanate solution by taking N,N-dimethylformamide as a solvent; b, adding the triethanolamine solution in the step a into the triphenylmethane triisocyanate solution, and conducting stirring at 60-80 DEG C for 10-15 hours to obtain a prepolymer; c, adding 10-20 parts of polyethylene glycol-1500 into the prepolymer, and conducting stirring for 20-30 hours at the temperature of 60-80 DEG C to obtain a solid-solid phase change material; and d, putting the delignified wood into the solid-solid phase change material, carrying out vacuum impregnation for 20-40 minutes, and then conducting drying to obtain a finished product. The prepared phase change energy storage wood has the heat and energy storage capacity and is good in flexibility.

Description

technical field [0001] The invention relates to the technical field of phase change materials and wood processing, in particular to a preparation method of thermally induced flexible phase change energy storage wood. Background technique [0002] With the gradual depletion of the three traditional energy sources of oil, coal and natural gas around the world, and the increasingly serious environmental problems such as the greenhouse effect and the destruction of the ozone layer, green and low-carbon has become a hot research direction in the field of global building materials, especially in European and American countries. considerable development has been achieved. In my country, building energy consumption accounts for 30% of the country's total energy consumption, and building carbon emissions account for 50% of the total emissions, which has caused a huge burden on my country's national economy and seriously polluted the environment, while the research on green and low-ca...

Claims

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Application Information

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IPC IPC(8): B27K3/08B27K3/02B27K3/20B27K3/32B27K3/36B27K3/52C09K5/06
CPCB27K3/08B27K3/02B27K3/20B27K3/32B27K3/36B27K3/52C09K5/063B27K2240/10B27K2240/00Y02A30/244
Inventor 孙伟圣林贤铣郭玺
Owner ZHEJIANG FORESTRY UNIVERSITY
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