Method for augmentation of soluble handwriting on paper historical relics

A paper-based cultural relic, water-soluble technology, applied in paper, papermaking, waste paper post-treatment, etc., can solve the problems of paper acidity increase, cumbersome operation process, paper corrosion, etc., to prevent the growth of mold, the reinforcement method is simple, The effect of preventing handwriting from blurring

Inactive Publication Date: 2017-02-01
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the preservation process of these paper archives, they will be affected by the high temperature and high humidity environment, which will make the handwriting faded and blurred; in the process of repairing the paper, they will encounter water, which will cause the handwriting to fade and spread. This disease has long been encountered in the field of archival cultural relic protection big problem
[0003] For the protection of water-soluble handwriting, the current main method is the "Prevention of Blurring Protection Method in the Restoration Process of Red Ink Handwriting Archives" invented by Li Yuhu et al. Phosphotungstic acid, phosphoric acid, acetone, and ethyl orthosilicate. The raw materials of the protective agent used for the second time are mainly ethyl cellulose, barium hydroxide, and methanol. The protective agents are painted in sequence. Although this method can effectively protect the The handwriting is blurred during the mounting process, but the operation process is cumbersome, and organic solvents such as acetone and toluene are used in the protective reagents, which pollute the environment
The previously developed protective agent is an aqueous solution of chitosan dissolved in acetic acid. After the treatment, the acidity of the paper will increase, and the acid will cause serious corrosion of the paper. Therefore, further deacidification treatment is required, and the process is complicated; at the same time, the aqueous solution of chitosan acetic acid When dealing with water-soluble handwriting, the operation requirements are relatively high, and it is necessary to brush it on the paper with a soft brush, which will easily cause the handwriting to spread when it encounters water, and it needs a hair dryer to dry it quickly, and high temperature is not good for the paper

Method used

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  • Method for augmentation of soluble handwriting on paper historical relics
  • Method for augmentation of soluble handwriting on paper historical relics
  • Method for augmentation of soluble handwriting on paper historical relics

Examples

Experimental program
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Embodiment 1

[0017] Chitosan with a number-average molecular weight of 310,000-375,000 and a degree of deacetylation of 91% is placed in a ball mill jar, with zirconia balls with a diameter of 5 mm as the ball mill and absolute ethanol as the ball milling medium. The mass ratio of chitosan is 1:1.5, fully milled with QM-3SP2 ball mill at 401 rpm for 24 hours, separated the zirconia balls, put the milled chitosan in a drying oven at 90°C for 24 hours, and dried with Grind in an agate mortar and pass through a 160-mesh sieve to obtain chitosan with a particle size of less than 30 μm; add 0.02 g of the obtained chitosan to 20 mL of absolute ethanol, and disperse ultrasonically at room temperature for 1 hour to make the chitosan evenly dispersed, and the obtained milky white dispersion The concentration of chitosan in the solution was 1 mg / mL.

[0018] Use water-soluble blue and black ink to write on two pieces of printing paper from the 1950s and 1960s, and then spray the above-mentioned disp...

Embodiment 2

[0021] Chitosan with a number average molecular weight of 310,000 to 375,000 and a deacetylation degree of 91% was placed in a ball mill jar, with zirconia balls with a diameter of 5 mm as the balls and absolute ethanol as the ball milling medium. The mass ratio of chitosan is 1:1.5, fully ball milled with QM-3SP2 ball mill 401 rpm for 24 hours, separate the zirconia balls, put the chitosan in a drying oven at 90°C for 24 hours, and use an agate mortar Grind and pass through a 160-mesh sieve to obtain chitosan with a particle size of less than 30 μm; add 0.21 g of the obtained chitosan to 30 mL of absolute ethanol, and ultrasonically disperse at room temperature for 1 hour to disperse the chitosan evenly. The concentration of the polysaccharide is 7 mg / mL; the water-soluble blue-black ink is evenly coated on the printing paper in the 1950s and 1960s with a brush, and then part of the printing paper is evenly sprayed with the resulting dispersion (experimental group), and the ot...

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Abstract

The invention discloses a method for augmentation of soluble handwriting on paper historical relics. The method applies chitosan water-free ethanol dispersion with an over 300,000 molecular weight, an over 75% deacetylation degree and a less than 80 micrometer particle size to augment the mechanical strength of the handwriting on historical paper relics, the augmentation method is simple, environmental friendly and non-toxic. The method not only can prevent the handwriting from becoming blurry, but also can augment the mechanical strength of the paper relics, prevent the molding of the paper relics; after augmentation the water-free ethanol can evaporate with no heating, thus no secondary damage is inflicted on the paper relics. Moreover the augmented paper relics are not picky on the environmental conditions. Normal temperature and conditions are adequate for storage.

Description

technical field [0001] The invention belongs to the technical field of archival cultural relics protection, and in particular relates to a method for strengthening water-soluble handwriting of paper cultural relics. Background technique [0002] Paper archival cultural relics are precious and carry very important artistic value and historical information. More than 7,800 periodicals, magazines, and newspapers published before 1949, and later archives written with water-soluble ink. These paper documents recorded important historical events in China's past dynasties and the wisdom and achievements of a large number of outstanding writers, thinkers, and scientists. , has extremely high historical value, cultural value, and information value, and is an important part of Chinese cultural and historical heritage. During the preservation process of these paper archives, they will be affected by the high temperature and high humidity environment, which will make the handwriting fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H25/18D21H17/33
CPCD21H25/18D21H17/33
Inventor 邢惠萍党王喆马欧亚
Owner SHAANXI NORMAL UNIV
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