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Particle embedded type paper deacidification protection method

A particle and paper technology, applied in the field of deacidification protection of cultural relics, can solve the problems of paper surface whitening, peeling, paper yellowing, etc., to achieve the effect of reducing peeling, avoiding whitening, and mild deacidification process

Inactive Publication Date: 2021-06-08
HANGZHOU ZHONGCAI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the former uses alkaline earth metal aqueous solution to deacidify the acidified paper, due to the chemical properties of the alkaline earth metal aqueous solution are relatively active, it is easy to cause the paper to turn yellow after deacidification, and there are problems such as uneven deacidification on the surface of the paper, which affects the deacidification process level. For the latter, the organic solvent cannot swell the cellulose molecular chain, and the nano-alkaline earth metal oxide particles are easy to agglomerate into large particles, so most of the alkali-residual particles stay on the paper surface after deacidification, making the paper surface pan White, covering the writing on the surface of the paper, and the particles are easy to form plaques and fall off

Method used

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  • Particle embedded type paper deacidification protection method
  • Particle embedded type paper deacidification protection method
  • Particle embedded type paper deacidification protection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 1% mass fraction of polyethylene glycol to water as a surfactant, and then add 1% mass fraction of nano magnesium oxide particles to obtain a water-based suspension deacidification agent. Then put the water-based suspension deacidification agent into the ultrasonic atomizer for atomization, and pass the atomized deacidification agent into the deacidification chamber. The atomization time is 3 minutes. During the atomization deacidification process, the paper is controlled The humidification rate is 10-20%. After the surface of the paper to be deacidified in the deacidification chamber is soaked by the atomized deacidification agent, the paper is taken out and allowed to dry naturally in the air, and the deacidification process is completed.

[0035] Performance Testing:

[0036] Such as figure 1 As shown, there is no yellowing on the surface of the paper treated in Example 1, no whitening on the surface of the paper, and no problems such as agglomerated plaques. ...

Embodiment 2

[0055] The alkaline earth metal oxide in Example 1 was adjusted to 0.8% by mass fraction of nano-calcium oxide particles, and the rest of the operation steps were the same as in Example 1. The final deacidification effect is substantially the same as in Example 1.

Embodiment 3

[0057] The surfactant in Example 1 is adjusted to 1% by mass fraction of polyvinyl alcohol, and the rest are the same as in Example 1. The final deacidification effect is substantially the same as in Example 1.

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Abstract

The invention provides a particle embedded type paper deacidification protection method which comprises the following steps: 1) adding particles and a surfactant into water to prepare a water-based suspension deacidification agent, wherein the particles are nano alkaline earth metal oxide particles; 2) applying the water-based suspension deacidification agent to the surface of the paper to be deacidified in an atomization manner; and 3) drying the atomized paper to be deacidified. According to the method, on the premise that the surface appearance and structure of the paper are not affected, the nano-particles are embedded and solidified in the cellulose fibers, and deacidification and continuous protection of the paper are achieved.

Description

technical field [0001] The present application relates to the field of deacidification protection of cultural relics, in particular to a method for deacidification protection of paper with embedded particles. Background technique [0002] Since the main component of paper is cellulose, the cellulose molecular chain will be hydrolyzed under the catalysis of acidic substances, and the long-term acidification of paper will accelerate the aging process of paper, resulting in a decrease in paper strength, brittleness, cracking, and yellowing Brittle and unusable. Therefore, timely deacidification protection of acidified paper is an effective method to prolong its life. [0003] At present, the methods for deacidification of paper can be mainly divided into two types. One is to use aqueous solutions of alkaline earth metals, such as calcium hydroxide, magnesium hydroxide, barium hydroxide aqueous solutions, etc., and apply these solutions to the paper by soaking or spraying. On ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H25/02D21H25/18
CPCD21H25/02D21H25/18
Inventor 张溪文陈炳铨施文正徐绍艳
Owner HANGZHOU ZHONGCAI TECH CO LTD
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