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Archaeological unearthed non-waterlogged lacquerware humectant and moisturizing treatment method thereof

A humectant, non-saturated technology, applied in the field of lacquer cultural relic protection and restoration, can solve the problems of paint film stress damage, high surface tension, cracks, etc., and achieve the effect of avoiding paint film peeling and preventing paint film embrittlement

Active Publication Date: 2021-11-05
首都博物馆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the northern lacquerware is unearthed, water is often sprayed on the lacquerware to keep it moist. However, due to the relatively high surface tension of water, when the ambient humidity is not up to standard, the method of repeatedly spraying water on the body of the unearthed lacquerware will easily lead to repeated saturation and loss of water to the lacquer. The film will cause serious stress damage, resulting in more serious cracking and warping

Method used

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  • Archaeological unearthed non-waterlogged lacquerware humectant and moisturizing treatment method thereof
  • Archaeological unearthed non-waterlogged lacquerware humectant and moisturizing treatment method thereof
  • Archaeological unearthed non-waterlogged lacquerware humectant and moisturizing treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049]Preparation of paint film simulation samples: filter the red push polish paint with a filter cloth in a fume hood, after filtering out impurities, pour an appropriate amount of it onto a clean polytetrafluoroethylene film, and repeatedly scrape it with a paint scraper until the surface is visually inspected Completely flat, without defects or local unevenness; put the coated paint sheet into a humidity generator equipped with saturated brine (dryer with saturated brine of potassium chloride, T=25°C, RH=85%) to dry One week later, it was taken out and peeled off to obtain a complete paint film sample with a size of 20cm×20cm and a thickness of 100-200μm.

[0050] Moisturizer preparation: 20% by weight of polyethylene glycol 200, 2.5% by weight of sodium lactate, 1% by weight of glucosamine, 4% by weight of sorbitol and the rest of the deionized water;

[0051] Moisturizing method and dosage: Use a watering can to spray moisturizer to moisturize, spray several times, and t...

Embodiment 2

[0069] Moisturizing effect of archaeologically unearthed paint film fragments

[0070] Contrast archaeologically unearthed paint film fragment samples using the disclosed moisturizing agent (30% by weight of polyethylene glycol 200, 3% by weight of sodium lactate, 2% by weight of glucosamine, 3% by weight of sorbitol and the rest of the deionized Water) Before and after moisturizing treatment, before and after wrapping with wrapping materials (raw rice paper, gauze, sponge, polyethylene film), in a normal humidity environment and in a saturated saline humidity generator (dryer equipped with potassium sulfate saturated saline, RH=95%) Place the surface humidity in the environment controlled by the glass desiccator for 4h, 12h, and 24h respectively. Wrap 2 layers of raw rice paper, and the gauze is treated with 1.5% by weight benzalkonium bromide solution and 1.5% by weight insecticide (deltamethrin, diflubenzuron mixed in 1:1) Gauze; the thickness of the sponge is 3cm. Using ...

Embodiment 3

[0076] Actual moisturizing effect of gold-painted lacquer coffins unearthed from Ming tombs

[0077] The unearthed lacquer coffin has been buried deep underground for nearly 500 years. Due to the long-term influence of acid, alkali and salt immersion in the groundwater mixed with soil, plant root growth and other factors, parts of the wooden body and inner coffin boards have decayed, and the paint leather on the surface of the lacquer coffin has blistered, cracked, and curled. sign. The average relative air humidity in Beijing is about 30% in winter and about 50% in summer. The air is dry. During the instantaneous release of moisture from the lacquer coffin, the shrinkage stress of wooden components with different densities and moisture contents will cause the lacquer coffin to deform. When the ambient humidity is not up to the standard, in order to avoid warping of the paint leather, the method of temporarily spraying water on the paint coffin body is used to moisturize the p...

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Abstract

The invention relates to an archaeological unearthed non-waterlogged lacquerware humectant. The humectant is prepared from the following components in percentage by weight: 20 to 40 weight percent of polyethylene glycol 200, 2 to 5 weight percent of sodium lactate, 1 to 3 weight percent of glucosamine, 3 to 6 weight percent of sorbitol and the balance of deionized water. The humectant provided by the invention can effectively prevent the phenomena of dry shrinkage, warping and the like of a paint film caused by rapid loss of water when and after the existing non-waterlogged lacquerware is unearthed.

Description

technical field [0001] The present disclosure relates to the technical field of protection and restoration of lacquer ware cultural relics, in particular, to a moisturizing agent for archaeologically unearthed unsaturated lacquer ware and a moisturizing treatment method thereof. Background technique [0002] Lacquerware refers to utensils painted with natural raw lacquer or refined lacquer on various carcasses (including wooden tires, sandwich tires, pottery tires, etc.), and is an important part of my country's cultural heritage. my country's lacquerware is divided according to the area where the soil was produced, and can be divided into saturated water in the south and wet non-saturated lacquer in the north. According to archaeological records, lacquerware has been unearthed more in southern regions such as Hubei, Hunan, and Anhui, and most of them are in good condition. According to the distribution map of ancient lacquerware drawn in historical documents, from the Qin ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/65C09D7/63
CPCC09D7/65C09D7/63C08L71/02C08K5/098C08K5/17C08K5/053Y02A50/30
Inventor 何秋菊张雪鸽许璇
Owner 首都博物馆