Method for carrying out colourimetry on castanopsis hystrix timber

A red vertebral wood, color measurement technology, applied in the field of red vertebral wood color measurement, can solve the problems of different color sensitivity, large error in colorimetric results, increased difficulty in material selection, etc., to achieve low color sensitivity requirements, simple and practical operation, The effect of stable color measurement results

Inactive Publication Date: 2019-04-05
中国林业科学研究院热带林业实验中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the color of Hongzhui wood varies greatly, from reddish brown to reddish brown, which increases the difficulty of selecting materials for Hongzhui high-end home furnishing and wooden decorations, and also affects the appearance and market value of Hongzhui wooden furniture and decorations.
[0003] For a long time, the visual colorimetry method has been used for the color of red vertebra wood, that ...

Method used

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  • Method for carrying out colourimetry on castanopsis hystrix timber
  • Method for carrying out colourimetry on castanopsis hystrix timber
  • Method for carrying out colourimetry on castanopsis hystrix timber

Examples

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Embodiment 1

[0021] A method for color measurement of red vertebra wood, comprising the following steps:

[0022] (1) Sampling: Use a chainsaw to take a 2 cm thick quarter-cut disc as a color measurement sample, marked as sp39-6-2. After peeling off the bark, use a brush to clean it repeatedly to remove attached stains, mold and insect eggs. Put the color measurement sample in a ventilated place indoors, and let it dry in natural air until it reaches constant weight. During the air-drying process, the natural air-drying of red cone diameter-cut discs is the best choice, as it dries quickly, and the wood loses water too quickly and is easy to crack. The wood is not completely dry, and the water content is high, which will affect the wood color measurement results, and it is easy to breed mold and induce wood discoloration.

[0023] (2) Color measuring board: Use an electric saw to cut the color measuring sample longitudinally into a 5cm×2cm×2cm color measuring board, take 5 color measurin...

Embodiment 2

[0038] A method for color measurement of red vertebra wood, comprising the following steps:

[0039] (1) Sampling: Use a chainsaw to take a 2 cm thick quarter-cut disk as a color measurement sample, marked as sp3-2. After peeling off the bark, use a brush to clean it repeatedly to remove attached stains, mold and insect eggs. Put the color measurement sample in a ventilated place indoors, and let it dry in natural air until it reaches constant weight. During the air-drying process, the natural air-drying of red cone diameter-cut discs is the best choice, as it dries quickly, and the wood loses water too quickly and is easy to crack. The wood is not completely dry, and the water content is high, which will affect the wood color measurement results, and it is easy to breed mold and induce wood discoloration.

[0040] (2) Color measuring board: Use an electric saw to cut the color measuring sample longitudinally into a 5cm×2cm×2cm color measuring board, take 5 color measuring b...

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Abstract

The invention discloses a method for carrying out colourimetry on castanopsis hystrix wood, which comprises the following steps of: (1) sampling: cutting out wood discs to form colourimetry samples, and air-drying to a constant weight state; (2) preparation of colourimetry boards: carrying out longitudinal chord cutting on the colourimetry samples to form colourimetry boards with a certain specification, and respectively taking a plurality of colourimetry boards from heartwood and sapwood; (3) preprocessing: polishing the colourimetry boards to make the surfaces of the colourimetry boards smooth; (4) color measurement: measuring Hunter indexes brightness 1*, chromaticity a* and chromaticity b* of wood colors of the colourimetry boards by a colourimetry color difference meter, and taking aplurality of points of each colourimetry board to carry out multi-point testing; and (5) wood color determination: determining an average value of Hunter indexes brightness 1*, chromaticity a* and chromaticity b* of wood colors of colourimetry points in each colourimetry board as a colourimetry board wood color, and determining an average value of the Hunter indexes brightness 1*, chromaticity a*and chromaticity b* of the wood colors of the colourimetry boards as a colourimetry sample wood color. The method disclosed by the invention is simple and practical to operate and low in requirement for color sensitivity of colourimetry personnel; and the colourimetry method is easy to master, stable in colourimetry result and small in error.

Description

technical field [0001] The invention relates to the field of wood color measurement, in particular to a method for color measurement of red vertebra wood. Background technique [0002] Against the background of vigorously developing strategic timber reserve bases, precious broad-leaved timber species characterized by rich colors and beautiful textures have become priority tree species resources for the development of southern provinces / autonomous regions in my country. Hongzhui is the first batch of rare and excellent native timber tree species included in the national strategic timber reserve base. Its timber is bright and round, and is suitable for making high-end home furnishing and wooden decorations. Therefore, South China is vigorously developing red vertebra plantation forests. At present, the area of ​​pure red vertebra forests and needle vertebra mixed forests in Guangdong and Guangxi has reached 5000hm 2 . However, the color of Hongzhui wood varies greatly, rangi...

Claims

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Application Information

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IPC IPC(8): G01J3/46
CPCG01J3/46
Inventor 刘光金贾宏炎
Owner 中国林业科学研究院热带林业实验中心
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