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A method for non-destructive and pressure-free identification of textile cultural relic materials based on infrared spectroscopy

A technology of infrared spectroscopy and near-infrared spectroscopy, which is applied in the field of identifying textile cultural relic materials, can solve the problems of destroying integrity, quickly and non-destructively detecting textile cultural relics, and affecting the accuracy of infrared spectroscopy, so as to improve near-infrared light reflectance and material identification. The process is fast and accurate, and the effect of high infrared reflectivity

Inactive Publication Date: 2018-06-15
CHINA NAT SILK MUSEUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many detection methods and data processing methods for the detection of textile cultural relics by infrared spectroscopy, including mid-far infrared and near-infrared spectroscopy. For extremely precious cultural relics, sampling will destroy their integrity, sampling analysis and testing cannot be done, and surface force analysis is not suitable, so a non-destructive and force-free material testing method is needed
[0004] Existing data processing methods for textile fiber detection by near-infrared spectroscopy mainly eliminate the influence of noise and baseline drift on spectral data through differential and multivariate light-scattering correction algorithms, thereby improving the data signal-to-noise ratio. For textile cultural relics, using infrared spectroscopy During detection, due to the requirements of non-destructive and pressure-free detection, the existing methods fail to improve its infrared reflectivity, especially when the number of fabric fibers is small, the infrared reflection signal will be significantly weakened, thus affecting the accuracy of the infrared spectrum of the material

Method used

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  • A method for non-destructive and pressure-free identification of textile cultural relic materials based on infrared spectroscopy
  • A method for non-destructive and pressure-free identification of textile cultural relic materials based on infrared spectroscopy
  • A method for non-destructive and pressure-free identification of textile cultural relic materials based on infrared spectroscopy

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Experimental program
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Effect test

Embodiment 1

[0030] A method for non-destructive and pressure-free identification of textile cultural relic materials based on infrared spectroscopy, comprising the following steps:

[0031] 1) Place a flat reflective sheet on the detection table of the infrared spectrometer, and spread the textile cultural relics to be tested on the reflective sheet. The surface of the reflective sheet is plated with gold, and the thickness of the coating on the reflective sheet is 0.7 mm.

[0032] 2) Adjust the detection probe of the near-infrared spectrometer, control the distance between the detection probe and the textile cultural relics at 0.6mm, control the ambient temperature at 22°C, and control the relative humidity at 55%, and then conduct near-infrared spectral information Collect and obtain the near-infrared spectrum of textile cultural relics.

[0033] 3) The obtained near-infrared spectrum is subjected to S.Golay smoothing filtering by microPHAZIR software, and the smoothness is 1, and then...

Embodiment 2

[0037] A method for non-destructive and pressure-free identification of textile cultural relic materials based on infrared spectroscopy, comprising the following steps:

[0038] 1) Use a brush dipped in ethanol to wet and clean the parts to be tested on the textile cultural relics, then use a brush dipped in acetone to continue wetting the wetted parts of the textile cultural relics, and then place the textile cultural relics at a temperature of Dry for 30 minutes at 25°C and 30% relative humidity. Wherein, the consumption of described ethanol is 1mL / cm 3 , the amount of acetone is 1.5mL / cm 3 .

[0039] A flat reflective sheet is placed on the detection table of the infrared spectrometer, and the textile cultural relic to be tested is flatly spread on the reflective sheet. The surface of the reflective sheet is coated with aluminum oxide. The thickness of the coating on the reflective sheet is 0.6mm.

[0040] 2) Adjust the detection probe of the near-infrared spectrometer...

Embodiment 3

[0045] A method for non-destructive and pressure-free identification of textile cultural relic materials based on infrared spectroscopy, comprising the following steps:

[0046] 1) Use a brush dipped in ethanol to wet and clean the parts to be tested on the textile cultural relics, then use a brush dipped in acetone to continue wetting the wetted parts of the textile cultural relics, and then place the textile cultural relics at a temperature of Dry at 30°C and 40% relative humidity for 15 minutes. Wherein, the consumption of described ethanol is 2mL / cm 3 , the amount of acetone is 2.5mL / cm 3 .

[0047] A flat reflective sheet is placed on the detection table of the infrared spectrometer, and the textile cultural relic to be tested is flatly spread on the reflective sheet. The surface of the reflective sheet is coated with silicon dioxide. The thickness of the coating on the reflective sheet is 0.8mm.

[0048] 2) Adjust the detection probe of the near-infrared spectromete...

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Abstract

The invention relates to the technical field of cultural relics protection, and discloses a method for non-destructive and pressure-free identification of textile cultural relic materials based on infrared spectroscopy, including: 1) placing a reflective sheet on the detection platform of an infrared spectrometer, and laying the textile cultural relics to be tested on the reflective on flakes. 2) Adjust the detection probe of the near-infrared spectrometer, control the distance between the detection probe and the textile cultural relics at 0.2-1mm, collect near-infrared spectral information, and obtain the near-infrared spectral diagram of the textile cultural relics. 3) Perform S.Golay smoothing filtering on the near-infrared spectrum, and then process the second-order derivative spectrum. 4) Compare the processed near-infrared spectrum with the textile near-infrared standard spectrum to identify the material of the textile cultural relics. The method of the invention can improve the near-infrared light reflectance of the sample without destroying or applying pressure to the sample, and can quickly and non-destructively identify the material of the textile cultural relics in combination with a unique data processing method.

Description

technical field [0001] The invention relates to the technical field of cultural relic protection, in particular to a method for identifying the material of textile cultural relics. Background technique [0002] The materials of textile cultural relics are mostly natural animal and plant fibers. Due to the influence of the burial environment and the preservation environment, the materials have undergone aging and degradation to varying degrees, causing the molecular groups of the materials to undergo structural changes. The structural groups that make up the materials are detected by infrared spectroscopy. Spectral results can show different degrees of infrared absorption weakening and characteristic absorption changes, etc. Therefore, the identification of textile cultural relic materials by near-infrared spectral detection methods can better distinguish the ancient textile cultural relic materials. [0003] There are many detection methods and data processing methods for th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3563G01N21/359
Inventor 王淑娟赵丰汪自强周旸刘剑郑海玲杨海亮
Owner CHINA NAT SILK MUSEUM
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