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Application of PMS (potassium methyl silicate) water solution in deacidification and reinforcement of paper

A technology of potassium methyl silicate and aqueous solution, which is applied in the chemical field, can solve the problems of low efficiency, failure to improve the mechanical properties of paper, time-consuming and labor-intensive problems, and achieve obvious deacidification effect, obvious hydrophobicity, acidity and mechanical properties.

Inactive Publication Date: 2014-09-10
RENMIN UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods are all "fixing the symptoms, not the root cause", and cannot really improve the mechanical properties of paper from a chemical point of view.
Moreover, the step-by-step method of deacidifying and then strengthening the paper is time-consuming and laborious, and the efficiency is very low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Prepare 100g of PMS aqueous solution (that is, deacidification agent a) with a concentration of 2.27% by mass, take 1.5g of acid machine-made paper (1986) and immerse it in it, place the device in a water bath at 40°C, heat for 1 hour, and then hang it to dry.

[0034] The comparison of performance parameters before and after deacidification is shown in Table 1:

[0035] Table 1. Comparison of performance parameters of paper before and after deacidification

[0036]

[0037] It can be seen from Table 1 that the surface and internal pH of the paper are greatly improved after deacidification, and the deacidification effect is good. The tensile strength of the paper increases by 31.9%, the folding endurance is 1 (double folding times), and the mechanical properties are significantly improved.

Embodiment 2

[0039] Mix the PMS aqueous solution with a mass percentage concentration of 25% and the alcohol aqueous solution (composed of water and ethanol with a volume ratio of 80:20) at a volume ratio of 1:10 to obtain deacidification agent b100g, take acid machine-made paper (1986) 1.5g Immerse it in it, place the device in a water bath at 40°C, heat it for 1 hour, and then hang it to dry. The comparison of performance parameters before and after deacidification is shown in Table 2:

[0040] Table 2. Comparison of performance parameters of paper before and after deacidification

[0041]

[0042] It can be seen from Table 2 that the surface and internal pH of the paper are greatly improved after deacidification, and the deacidification effect is good. The tensile strength of the paper increased by 33.7%, the folding endurance was 5 (double folding times), and the mechanical properties were significantly improved.

Embodiment 3

[0044] Mix the PMS aqueous solution with a mass percentage concentration of 25% and the alcohol aqueous solution (water:ethanol=50:50) with a volume ratio of 1:10 to obtain deacidification agent b100g, take 1.5g of weakly acidic handmade paper (xuan paper) and immerse it in it. The device was placed in a water bath at 40°C, heated for 1 hour, and then hung to dry. The comparison of performance parameters before and after deacidification and before and after aging is shown in Table 3:

[0045] Table 3. Comparison of performance parameters of paper before and after deacidification

[0046]

[0047]It can be seen from Table 3 that the surface and internal pH of the paper are greatly improved after deacidification, and the deacidification effect is good. The tensile strength of the paper increases by 23.87%, the folding endurance is 8 (double folding times), and the mechanical properties are significantly improved. After aging, the surface and internal pH of the paper ...

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Abstract

The invention discloses application of a PMS (potassium methyl silicate) water solution to deacidification and reinforcement of paper. According to the application, a deacidification and reinforcement method comprises the following steps: soaking the paper in a deacidification agent; treating, hanging and airing to complete the deacidification and the reinforcement, wherein the deacidification agent is any one of the PMS water solution and an alcohol water mixing solution. The paper is treated by using a PMS paper deacidification agent, so that the deacidification effect is obvious, and the mechanical property of the paper is well improved. By improving different solvent ratios and concentration ratios, the acid property and the mechanical property of the paper are improved to different extents. Meanwhile, the paper is obvious in hydrophobic performance. According to the characteristics, the water absorption of paper cellulose can be reduced, so that the damage to swelling, degradation and hydrogen-bonding of fibers caused by water is alleviated. The microbiological corrosion degree of the paper is greatly reduced.

Description

technical field [0001] The invention belongs to the field of chemistry and relates to the deacidification and reinforcement of paper archives, in particular to the application of potassium methyl silicate aqueous solution in the deacidification and reinforcement of paper. Background technique [0002] Ancient books and archives are the precious cultural heritage left to us by our ancestors and the precious spiritual wealth of the Chinese nation. It is the carrier and witness of Chinese historical inheritance, and has important historical value, artistic value, cultural relic value and reference value. However, the situation of the existing ancient books in our country is not optimistic. Due to wars, burning bans, floods and fires in the past dynasties, there are not many ancient books and archives left over, plus the damage of insects, mildew, flocculation, rat bites, embers, paper aging, and acidification. There are even fewer preserved to this day. Therefore, better pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H25/18
Inventor 张小岗张淑娟
Owner RENMIN UNIVERSITY OF CHINA
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