Dye-based handwriting protectant for written archives

Abstract

The invention discloses a dye-based handwriting protectant for written archives, and the protectant provided by the invention is prepared from the following raw materials in percentage by weight: 0.8-1.6% of chitosan, 0.3-0.6% of glacial acetic acids, and 97.8-98.9% of distilled water. Lab research studies show that the dye-based handwriting protectant for written archives prepared according to the mass ratio disclosed by the invention can be used for effectively preventing dye-based handwritings from diffusion when the dye-based handwritings are contacted with water, so that the mechanical strength of the whole paper is significantly improved, and the mount and repair of archival paper subjected to protection are not affected. The dye-based handwriting protectant for written archives disclosed by the invention can be applied to the protection of easily-diffused dye-based archival handwritings.

Description

technical field [0001] The invention belongs to the field of archives protection and restoration, and in particular relates to a protection reagent for preventing red ink, pure blue ink and other dye handwritings from diffusing in water during the restoration and protection process of written archives. Background technique [0002] As a precious original record of history, archives are the link of cultural inheritance. A large number of paper cultural relics that have been handed down to this day have experienced various changes in the external environment and their own physical and chemical properties. Over time, yellowing, mildew, etc. have generally appeared Change, aging, brittle fracture, damage, pulverization and other diseases. For some paper archival cultural relics that are so diseased that they cannot be read normally, most of them are restored and protected by mounting. The paste used in the mounting of traditional craft archives contains a lot of water, which ca...

AI Technical Summary

Problems solved by technology

[0004] At present, the anti-blooming protection method of archives handwriting, mainly invented by Li Yuhu and others, has applied for a Chinese patent, the patent application number is 201010586407.9, which adopts the secondary protection method, The raw materials of the protective agent used for the first time are mainly 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 brushing method protects the handwriting, which can effectively prevent the handwriting from blurring. Although this method can well prevent the handwriting from red ink from blurring during the mounting process, it needs three kinds of reagents to protect the handwriting in sequence. In addition, organic solvents such as acetone and toluene are used in the protection reagents, which not only makes the protection process of archives cumbersome, but also pollutes the surrounding environment

After the above-mentioned reagents protect the handwriting of the archival dye, due to the hydrophobic effect of ethyl cellulose, the protected paper is water-repellent, so that the archives cannot be fully compatible with the mounting paper during the mounting process. The ethyl cellulose and the second step After the compound application of the precipitation compound in the paper, although the affinity of the paper for file repairing and mounting has been improved, the degree of water seepage affinity between the protected part and the unprotected part in the process of repairing and mounting is obviously different, and the degree of sufficient affinity has not been reached, which affects the repairing. Mounting quality

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