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Energy storage wood material using alkylated boron nitride as filler

A boron nitride and alkylation technology, used in wood treatment, wood impregnation, wood impregnation, etc., can solve problems such as poor encapsulation, low thermal conductivity, etc., and achieve improved service life, mild reaction conditions, and high operability. Effect

Inactive Publication Date: 2019-11-05
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides an energy storage wood with alkylated boron nitride as a filler. Preparation method of high-efficiency phase-change energy storage wood

Method used

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  • Energy storage wood material using alkylated boron nitride as filler

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Embodiment 1

[0023] An energy storage wood using alkylated boron nitride as a filler, comprising the following steps:

[0024] (1) Delignified wood: select fast-growing poplar, select mature sapwood above breast height, the specification is 20mm long x 20mm 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 500ml deionized water into the beaker, then add 40gNaOH and 63gNa 2 SO 3 , after heating to 95°C, place 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 submerged 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. .

[0025] (2) Organic solvent: ①Put glycidyl methacrylate through the oxidation pot and p...

Embodiment 2

[0030] An energy storage wood using alkylated boron nitride as a filler, comprising the following steps:

[0031] (1) Delignified wood: Paulownia wood is selected, and mature sapwood above breast height is selected. The specifications are 30mm long x 30mm wide x 20mm thick, without 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, place 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 submerged 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.

[0032] (2) Organic solvent: ①Put glycidyl methacrylate through the oxidation pot to get purified g...

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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

[0001] (1) Technical field [0002] The invention relates to the technical field of energy storage, in particular to an energy storage wood with alkylated boron nitride as a filler and a semi-interpenetrating network regulation method. [0003] (2) Background technology [0004] 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 materials can absorb heat energy through phase changes under heating conditions and release heat energy during cooling, and can store...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/08B27K3/52B27K5/00B27K5/04
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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