Preparation method of graphene/furfuryl alcohol resin impregnated and modified poplar veneer

A poplar veneer, resin impregnation technology, applied in the direction of impregnating wood, pressure impregnation, wood impregnation, etc., can solve the problems of low density, loose material, lack of wood resources, etc., to improve dispersion, sound insulation performance improvement, production simple craftsmanship

Active Publication Date: 2021-12-14
NANJING FORESTRY UNIV
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Problems solved by technology

Due to the lack of wood resources, people focus on artificial fast-growing forests, but fast-growing wood has problems such as loose material, low density, mechanics and mechanical strength.

Method used

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  • Preparation method of graphene/furfuryl alcohol resin impregnated and modified poplar veneer
  • Preparation method of graphene/furfuryl alcohol resin impregnated and modified poplar veneer
  • Preparation method of graphene/furfuryl alcohol resin impregnated and modified poplar veneer

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Embodiment Construction

[0027] In order to better understand the present invention, the technical solution of the present invention will be described in detail below with specific examples, but the present invention is not limited thereto.

[0028] like figure 1 Shown, this is used for the preparation method of the graphene furfuryl alcohol resin impregnated modified poplar veneer of sound insulation, and its steps comprise:

[0029] 1) Pre-preparation, including delignification pretreatment of poplar veneer and preparation of graphene / furfuryl alcohol resin impregnation solution;

[0030] Poplar veneer delignification pretreatment: the poplar veneer in the present invention is peeled wood, the surface and edge burrs are removed, and the delignification is carried out by sodium chlorite (the mass fraction of sodium chlorite ranges from 5 to 6 %, adding glacial acetic acid to adjust the pH value to the range of 3~4), heating in a water bath at 86°C for 2.5h, soaking in deionized water for 3~5 times u...

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Abstract

The invention provides a preparation method of a graphene/furfuryl alcohol resin impregnated and modified poplar veneer for sound insulation. The preparation method comprises the following steps: 1) preparation, including delignification pretreatment of a poplar veneer and preparation of a graphene/furfuryl alcohol resin impregnation liquid, wherein in the delignification pretreatment of the poplar veneer, the poplar veneer is delignified by adopting a sodium chlorite method; 2) impregnation of the poplar veneer with the graphene/furfuryl alcohol resin: impregnating the poplar veneer into the graphene/furfuryl alcohol resin impregnation liquid, pressing the top by using a heavy object, and carrying out impregnation at normal temperature and normal pressure until the poplar veneer is permeated by the impregnation liquid after vacuum pressurization impregnation; and 3) drying until the weight of the poplar veneer does not change any more to obtain the graphene/furfuryl alcohol resin impregnated and modified poplar veneer. According to a designed preparation process in the invention, the modified poplar veneer with the best sound insulation performance can be obtained, a small amount of graphene oxide is added, and high-frequency-band average sound insulation index can be increased by 10%-50%; and compared with raw materials, the high-frequency-band average sound insulation index is increased by 77% through the designed preparation process.

Description

technical field [0001] The invention relates to a preparation method of graphene furfuryl alcohol resin impregnated modified poplar veneer. Background technique [0002] Noise pollution is currently second only to air pollution and has a huge impact on people's daily life, work and study. Wood is a common material in the field of home decoration, but its sound insulation performance is poor. Common methods to improve the sound insulation performance of wood include super thick sound insulation, compounding with sound-absorbing materials, and sound insulation structure design. Due to the scarcity of wood resources, people focus their attention on artificial fast-growing forests, but fast-growing wood has problems such as loose material, low density, mechanics and mechanical strength. Resin densification impregnation treatment technology is an effective method to improve the properties of fast-growing wood. Since its inception, graphene has been a star filler among nano-func...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/08B27K3/52B27K3/02B27K5/00B27K5/04G10K11/162
CPCB27K3/08B27K3/52B27K3/0207B27K5/001B27K5/04G10K11/162Y02P20/10
Inventor 徐伟吴双双
Owner NANJING FORESTRY UNIV
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