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Preparation of curved transparent wood

A wood and curved surface technology, applied in the field of preparation of curved surface transparent wood, to achieve good mechanical properties, increase added value, and good social value

Active Publication Date: 2019-05-03
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the few researches on transparent wood at present, there is no curved transparent wood, that is, to realize the flexible design of transparent wood.

Method used

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  • Preparation of curved transparent wood
  • Preparation of curved transparent wood
  • Preparation of curved transparent wood

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Embodiment Construction

[0028] The present invention is further described below in conjunction with the examples, but the present invention is not limited to the following examples.

[0029] A kind of preparation of curved surface transparent wood is characterized in that, comprises the following steps:

[0030] 1) Fully wet the sample (fast-growing poplar, size 3cm×3cm×0.2cm) first;

[0031] 2) Put the wetted sample into 6% sodium hydroxide solution for pretreatment, the treatment temperature is 65°C, react for 1h, and then rinse with dedistilled water until neutral;

[0032] 3) The sample was then treated with 7% sodium chlorite under acidic conditions (pH 4) for 3 hours to obtain a complete delignified wood substrate sample;

[0033] 4) Replace the complete delignified wood substrate sample with distilled water to neutral, then take it out and freeze it in the freezer for 3 hours;

[0034] 6) Dry the frozen samples in a freeze dryer for 5 hours to obtain a soft delignified wood substrate. The ph...

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Abstract

The invention relates to preparation of curved transparent wood. A sample is placed in a sodium hydroxide solution to be pretreated and is washed to be neutral; the sample is treated through a sodiumchlorite solution under the acid condition, and a complete delignification wood substrate sample is obtained; then freezing, drying and bending molding are carried out, and a curved delignification wood substrate is obtained; the curved delignification wood substrate is dipped into a high-light-transmittance polymer with the refractive index close to that of fibers, curing and polymerization are carried out, and the curved transparent wood is obtained. The prepared curved transparent wood is excellent in mechanical performance and high in curvature, the light transmittance reaches 85% or above, and high market application value is achieved.

Description

technical field [0001] The invention belongs to the technical field of wood technology development and modification, and in particular relates to the preparation of curved transparent wood. Background technique [0002] In theory, if the colored substances such as lignin, pigment, tannin and resin in the wood are removed by physical and / or chemical methods, and then the material with the same refractive index is uniformly filled in the wood, so that the light does not occur or break when it passes through the wood. The purpose of transparency can be achieved with less refraction, reflection and scattering. In order to obtain high light transmittance of wood, it is necessary to remove lignin and other chromogenic substances as much as possible. However, when the removal rate of the chromogenic substance is high, the wood is very easy to disperse, and it is more difficult to further bend the wood with high curvature. Therefore, in the few studies on transparent wood at prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27M1/08B27H1/00B27K3/00B27K3/20B27K5/00B27K5/04B27K3/50B27K3/38B27K3/08
Inventor 殷学风田杏欢林涛段敏张希娟范晶李静袁枚田赵欢
Owner SHAANXI UNIV OF SCI & TECH