A kind of energy storage wood with alkylated boron nitride as filler

A technology of boron nitride and alkylation, which is applied in the direction of wood impregnation, wood treatment, impregnation of wood, etc., can solve the problems of poor encapsulation and low thermal conductivity, and achieve the advantages of improved service life, mild reaction conditions and high operability Effect

Inactive Publication Date: 2021-03-23
BEIJING FORESTRY UNIVERSITY
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  • Claims
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Problems solved by technology

[0003] The invention provides a preparation method of phase change energy storage wood with alkylated boron nitride as filler, the purpose of which is to overcome the defects of poor encapsulation and low thermal conductivity of phase change energy storage wood, and provide a Preparation method of phase change energy storage wood with good encapsulation and high thermal conductivity

Method used

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  • A kind of energy storage wood with alkylated boron nitride as filler

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Embodiment 1

[0020] A method for preparing phase-change energy storage wood using alkylated boron nitride as a filler, comprising the following steps:

[0021] (1) Delignified wood: select fast-growing poplar, and select mature sapwood above the breast height. The specifications are 20 mm long x 20 mm wide x 20 mm thick, 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 deionized water into the beaker, then add 40gNaOH and 63gNa 2 SO 3 , after heating to 95°C, put the wood in the mixture and cook for 24 hours (the mixture is replaced 3-4 times during the process), and ensure that the wood is immersed in the solution during this period. Finally, place the cooked wood in ethanol boiling liquid at 78°C for 1 hour to replace the moisture in the wood, and store the prepared wood in absolute ethanol.

[0022] (2) Organic solvent: ① pass glycidyl met...

Embodiment 2

[0027] A preparation method of phase change energy storage wood using alkylated boron nitride as a filler, comprising the following steps:

[0028] (1) Delignified wood: Paulownia wood is selected, and mature sapwood above breast height is selected. The specifications are 30 mm long x 30 mm wide x 20 mm thick, 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 deionized water into the beaker, then add 5gNaOH and 2.5gNa 2 SO 3, after heating to 95°C, put the wood in the mixture and cook for 24 hours (the mixture is replaced 3-4 times during the process), and ensure that the wood is immersed in the solution during this period. Finally, place the cooked wood in ethanol boiling liquid at 78°C for 1 hour to replace the moisture in the wood. The prepared wood was kept in absolute ethanol.

[0029] (2) Organic solvent: ① pass glycidyl me...

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Abstract

The invention discloses an energy storage wood material using alkylated boron nitride as a filler. The main steps of the method comprise: (1) carrying out lignin removing treatment on a wood materialto increase energy storage space; (2) copolymerizing glycidyl methacrylate and polyethylene glycol 400, and blending with glycidyl methacrylate to prepare an organic solvent; (3) dispersing boron nitride in a buffer solvent, adding dopamine hydrochloride, carrying out a reaction for a certain time at a room temperature to graft boron nitride onto dopamine, dispersing dopamine-modified boron nitride in N,N-dimethyl formamide, adding octadecyl isocyanate, and grafting boron nitride onto the alkyl chain under the action of a catalyst; (4) blending the alkylated boron nitride, the organic solventand polyethylene glycol 800 to prepare a phase change energy storage material; and (5) immersing the phase change energy storage material in the wood material by using a vacuum pressurizing full cellmethod to obtain a phase change energy storage wood material.

Description

technical field [0001] The invention relates to the technical field of energy storage, in particular to a preparation method of phase-change energy storage wood using alkylated boron nitride as a filler. Background technique [0002] In recent years, the issue of energy conservation and environmental protection has become one of the important factors affecting social and economic development. With the rapid development of industrial society, the demand and dependence of human beings on energy are increasing, and the development of new green energy, the improvement of energy utilization rate, and the research and development of energy-saving technologies and materials are becoming more and more important. In this context, phase change energy storage technology emerged as the times require. Phase change energy storage materials can absorb heat energy through phase changes under heating conditions, and release heat energy during cooling, and can store heat energy according to d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27M1/08B27K3/08B27K3/52B27K5/00B27K5/04C09K5/06
CPCB27K3/08B27K3/52B27K5/0085B27K5/04B27K2240/60
Inventor 刘毅李彦辰张伟业夏容绮方晓阳王蓓蓓赵俊淇杨颖妮
Owner BEIJING FORESTRY UNIVERSITY
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