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Method for protecting paper cultural relics containing transition metal

A technology of paper cultural relics and transition metals, which is applied in the post-processing of waste paper, post-processing of printing, printing, etc., can solve the problems that paper cultural relics cannot be preserved effectively for a long time, solve the problem of mechanical strength and polymerization degree decline, and solve the problem of paper severe discoloration effect

Active Publication Date: 2022-01-11
FUDAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a protection method for paper cultural relics containing transition metals, which is used to solve the problem that paper cultural relics containing transition metals cannot be effectively preserved for a long time

Method used

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  • Method for protecting paper cultural relics containing transition metal
  • Method for protecting paper cultural relics containing transition metal
  • Method for protecting paper cultural relics containing transition metal

Examples

Experimental program
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Effect test

Embodiment 1

[0040] In this example, 2,5-hexanediol is used as an alcohol protective agent. Specifically, 80 mL of ultrapure water and 20 mmol 2,5-hexanediol are mixed to form a protective agent solution, wherein the concentration of 2,5-hexanediol is 2.95 wt%. Soak 1.6g of paper samples containing transition metal pigments in the protective agent solution, and add 1.6mmol anhydrous copper sulfate and 16mmol hydrogen peroxide at the same time to simulate the Fenton-like reaction system for the degradation of paper cultural relics containing transition metal pigments. The reaction system was placed in an oven at 90°C for 2, 6, 12, 24 and 48 hours, respectively, to fully simulate the oxidative degradation process of paper cultural relics containing transition metal pigments over a long period of time. After each reaction stage, the paper samples were taken out, washed with ultrapure water and dried naturally. It was found that the paper had no obvious color change and damage after the reacti...

Embodiment 2

[0052] In this embodiment, 2,4-pentanediol is used as an alcohol protective agent. Specifically, 80 mL of ultrapure water and 20 mmol 2,4-pentanediol are mixed to form a protective agent solution, wherein the concentration of 2,4-pentanediol is 2.60 wt%. Soak 1.6g of paper samples containing transition metal pigments in the protective agent solution, and add 1.6mmol anhydrous copper sulfate and 16mmol hydrogen peroxide at the same time to simulate the Fenton-like reaction system for the degradation of paper cultural relics containing transition metal pigments. The reaction system was placed in an oven at 90°C for 2, 6, 12, 24 and 48 hours, respectively, to fully simulate the oxidative degradation process of paper cultural relics containing transition metal pigments over a long period of time. After each reaction stage, the paper samples were taken out, washed with ultrapure water and dried naturally. It was found that the paper had no obvious color change and damage after the ...

Embodiment 3

[0058] In this embodiment, 2-butanol is used as the protective agent for alcohols. Specifically, 80 mL of ultrapure water and 20 mmol 2-butanol are mixed to form a protective agent solution, wherein the concentration of 2-butanol is 3.75 wt%. Soak 1.6g of paper samples containing transition metal pigments in the protective agent solution, and add 1.6mmol anhydrous copper sulfate and 16mmol hydrogen peroxide at the same time to simulate the Fenton-like reaction system for the degradation of paper cultural relics containing transition metal pigments. The reaction system was placed in an oven at 90°C for 2, 6, 12, 24 and 48 hours, respectively, to fully simulate the oxidative degradation process of paper cultural relics containing transition metal pigments over a long period of time. After each reaction stage, the paper samples were taken out, washed with ultrapure water and dried naturally. It was found that the paper had no obvious color change and damage after the reaction.

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Abstract

The invention provides a method for protecting a paper cultural relic containing transition metal, which comprises the following steps: a part needing to be protected in the paper cultural relic is contacted with a solution containing a protective agent, and the protective agent is alkane substituted by at least one hydroxyl group. According to the protection method of the paper cultural relic containing the transition metal ions, the protective agent is in contact with the paper cultural relic containing the transition metal pigment, the protective agent can be attached to the surface of the paper for a long time, and the situation that hydrogen peroxide and hydroxyl free radicals generated on the surface of the paper degrade and destroy a cellulose skeleton of the paper is avoided; therefore, the problems that the mechanical strength and the polymerization degree of the paper are reduced, and the paper is seriously discolored are effectively solved, and long-term protection of paper cultural relics is realized. In addition, the protective agent has the advantages of being simple, easy to obtain, non-toxic, harmless, economical, practical, green, environmentally friendly and the like.

Description

technical field [0001] The invention relates to the technical field of paper cultural relics protection, in particular to a method for protecting paper cultural relics containing transition metals. Background technique [0002] As the witness of human history and civilization, paper cultural relics such as calligraphy and painting are extremely precious wealth of human beings and non-renewable cultural resources. As the carrier of cultural relics, paper is a two-dimensional material mainly composed of cellulose, which is assembled by multi-scale polymer chains. [0003] At present, a large number of paper cultural relics collected by countries around the world have undergone serious deterioration and discoloration during the long-term preservation process. In blue or stone green Chinese paintings, the pigments cause the surrounding paper-based materials to become yellowish or even brittle and damaged. Studies have found that these paper damages are the result of cellulose ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H25/18B41M7/00
CPCD21H25/18B41M7/0063
Inventor 闫玥儿张昊诚姚晶晶唐颐张旭罗婵
Owner FUDAN UNIV
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