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Analyzing and testing method for unearthed ancient lacquer film

A technology for analyzing and testing paint films, applied in the field of paint film analysis and research, it can solve problems such as hindering the progress of paint film research, fragmentation, and immature analysis methods.

Inactive Publication Date: 2015-07-29
秦始皇帝陵博物院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively late rise of paint film research in my country, the analysis methods are not yet mature enough. Most of the existing analysis methods are scattered and lack of system, which hinders the progress of paint film research.

Method used

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  • Analyzing and testing method for unearthed ancient lacquer film
  • Analyzing and testing method for unearthed ancient lacquer film
  • Analyzing and testing method for unearthed ancient lacquer film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Analysis and test of paint film unearthed from Warring States cemetery in Donglidong Village, Yiyuan, Shandong

[0040] The sample is a fragment of a lacquer box unearthed from the cemetery of the Warring States Period in Donglidong Village, Yiyuan, Shandong. The section of the paint film is observed under a microscope. It can be clearly observed that there are five layers of structure, from top to bottom are black paint film layer, paint gray layer, hemp Fiber layer, paint gray layer, red paint film layer.

[0041] Such as figure 1 From the comparison of the three paint films, it can be seen intuitively that the main absorption peaks of the infrared spectra of the ancient paint films and lacquer polymers in paint ash are basically the same as those of modern lacquer. That is to say, in the case of the standard infrared spectrum of raw lacquer, it can be intuitively judged whether the collected sample is a paint sample through the infrared spectrum.

Embodiment 2

[0043] Test and Analysis of Paint Film of Han Dynasty Lacquer Ware Collected in Anhui Wanxi Museum

[0044] Observing the sliced ​​section of the 1# sample under a stereo microscope, it can be clearly observed that the sample is divided into three layers. After identification, the uppermost layer is a red paint layer, which is bright red; the middle layer is a black primer layer, which is orange-yellow; the bottom layer For the paint gray layer. The observation and analysis of the paint film section shows that the beard paint process of the 1# sample is mainly divided into three stages. First, the gray layer is painted, and then the black primer layer is applied, and then the red paint is drawn on the black primer by flat coating and line drawing techniques. Ornamentation. (Through the structure reduction varnish process)

[0045] Observing the sliced ​​section of the paint film of the 2# sample with a biological microscope, the surface of the 2# sample is maroon, showing tw...

Embodiment 3

[0048] Testing and Analysis of Han Dynasty Lacquer Wares Collected in Jingmen Museum, Hubei

[0049] (1) adopt Raman spectrometer to the red pigment of No11 sample respectively (see figure 2 Curve c) and the dark color plot ( figure 2 Curve d), the red pigment of No12 sample ( figure 2 Curve a) and the white particles in the paint ash layer ( figure 2 Curve b) was analyzed. The spectra of curves a and c are almost identical, and there are two sharp peaks around 255.6cm-1 and 346.6cm-1, which belong to the Raman peak of HgS, indicating that the red pigments are all cinnabar (HgS) in color. A Raman peak of 961.5cm-1 appears in curve b, which reflects the information of hydroxyapatite and is P-O stretching vibration. In curve b, only one Raman peak appears due to the fluorescence effect, and it can be considered that the phase of the white particles is hydroxyapatite. Mr. Sun Ji, an expert on cultural relics, found through textual research that in the process of embankme...

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Abstract

The invention discloses an analyzing and testing method for an unearthed ancient lacquer film. Different analyzing methods are adopted for different coatings of the lacquer film; firstly, the overall structure (such as layering as well as the color, the thickness and the content condition of each layer) of the lacquer film is observed by the aid of a microscope, and then plant species identification is performed on a residual matrix and a fiber layer by the aid of the microscope; XRD (x-ray diffraction) analysis is performed on a lacquer ash layer, and main components and chemical structures of the main components can be detected; infrared spectroscopic analysis is performed on a raw lacquer layer, and the lacquer film is identified; the constitution structure of a pigment of a pigment layer is determined with an XRF (X-ray fluorescence) and XRD combined method. Besides, testing means are relatively flexible for analysis of additives in each layer, crystalline substances such as quartz and the like can be analyzed through XRD, non-crystalline substances can be analyzed with the Raman spectrum, a firm foundation is laid for further research on the lacquer film, a theoretical basis is provided for restoration of the ancient lacquer painting technology, and a valuable reference is provided for conservation and renovation work.

Description

technical field [0001] The invention relates to the field of paint film analysis and research, in particular to an analysis and test method for ancient unearthed paint films. Background technique [0002] Lacquerware is a great invention in the history of ancient science and technology in my country and an important part of my country's cultural heritage. Although the ancient lacquer ware was protected by a paint film, it was often poorly preserved due to the influence of the underground burial environment and its own materials, especially in northern regions such as Beijing, Shaanxi, Shanxi, Gansu and other places. The unearthed lacquer ware is rarely complete, and some wood is completely soil. Even if it survives, the paint film on it will have wings, crack or even fall off due to drastic changes in the environment, and it is very brittle and easy to break. Although these severely damaged lacquerware cannot be repaired, they are rare samples for analysis and research. Th...

Claims

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Application Information

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IPC IPC(8): G01N21/84G01N21/3563G01N23/20G01N23/223
Inventor 容波周铁王亮吴玥朱振宇
Owner 秦始皇帝陵博物院
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