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A kind of paper deacidification liquid and preparation method thereof

A deacidification and paper technology, which is applied in the post-processing of waste paper, etc., can solve the problems of expensive equipment and a small number of documents for single batch processing, and achieve the effects of simple preparation, reduced surface tension, and avoiding the risk of side reactions

Active Publication Date: 2018-06-19
NAT LIBRARY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of method equipment is expensive, and the number of documents for single batch processing is small

Method used

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  • A kind of paper deacidification liquid and preparation method thereof
  • A kind of paper deacidification liquid and preparation method thereof
  • A kind of paper deacidification liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Preparation of paper deacidification solution

[0046] Under magnetic stirring, add 10 g of fluorononyl ether acetate into 89 g of perfluorooctane solvent, stir evenly, then add 1 g of magnesium oxide, and ultrasonically oscillate at an ultrasonic frequency of 20 kHz for 10 minutes at room temperature to obtain Paper deacidification solution.

[0047] The particle size of magnesium oxide used in this example is 90nm.

[0048] Put the above-mentioned paper deacidification solution in a watering can, spray it evenly on the surface of the paper twice, and let the paper dry naturally at room temperature.

[0049] The paper used in the present embodiment is the single Xuan that quality is 2g, and its quantification is 25g / m 2 .

Embodiment 2

[0051] Preparation of paper deacidification solution

[0052] Under magnetic stirring, add 1500g of fluorodecyl ether methyl ester into 7500g of perfluorooctane solvent three times, stir evenly, then add 375g of calcium oxide, and ultrasonically vibrate at room temperature for 30 minutes at an ultrasonic frequency of 40kHz. Obtain paper deacidification solution.

[0053] The particle size of calcium oxide used in this example is 200nm.

[0054] Put the above-mentioned paper deacidification solution in a watering can, spray evenly twice on the surface of each page of paper in the book, and then carry out vacuum drying.

[0055] Books used in the present embodiment is that quality is 270g, and the number of pages is the paperback book that the hardwood pulp of 200 pages is copied, and the quantification of its paper is 50g / m 2 .

Embodiment 3

[0057] Preparation of paper deacidification solution

[0058]Under magnetic stirring, add 20g of fluoroheptyl ether acetate into 75g of perfluorooctane solvent, stir evenly, then add 5g of magnesium hydroxide, and ultrasonically vibrate at room temperature for 10 minutes at an ultrasonic frequency of 30kHz. Obtain paper deacidification solution.

[0059] The particle size of the magnesium hydroxide used in this example is 100nm.

[0060] Soak the paper in the above-mentioned paper deacidifying solution for 30 minutes, take out the paper, and let it dry naturally at room temperature.

[0061] Paper used in the present embodiment is the bamboo paper that quality is 4g, and its quantification is 20g / m 2 .

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Abstract

The invention discloses a paper deacidifying solution and a preparation method thereof. The preparation method comprises the following steps of slowly adding fluoroalkyl ether carboxylate into a perfluoroalkane solvent, uniformly agitating an obtained first mixture, then adding an alkaline deacidifying substance into the obtained first mixture, agitating an obtained second mixture to uniformly mix all components, and ultrasonically vibrating the obtained second mixture, so that the paper deacidifying solution can be obtained. The paper deacidifying solution is prepared from the alkaline deacidifying substance with the content which is 0.01wt% to 5 wt%, the fluoroalkyl ether carboxylate with the content which is 0.01wt% to 20wt% and the balance of the perfluoroalkane solvent. The paper deacidifying solution is obvious in a deacidifying effect for acidulated paper and good in dispersing performance, can be maintained in a stable disperse state for a long time, has no influences on handwritings written with conventional ink and pen water and by a ball pen and the like, is green and environment-friendly, can be repeatedly recycled, is lower in cost, and can be widely applied to the deacidifying treatment of paper of ancient books and reliable texts, paper of literature during the period of the Republic of China from 1912 to 1949 and paper of modern literature.

Description

technical field [0001] The invention belongs to the field of paper deacidification, and relates to a paper deacidification solution and a preparation method thereof, in particular to an alkaline deacidification substance, a fluoroalkyl ether carboxylate, which uses fluoroalkyl ether carboxylate as a dispersant Deacidification of paper with perfluoroalkane solvents. Background technique [0002] Libraries, archives, and museums house a vast collection of paper documents. Improving the durability of paper to prolong the lifetime of paper documents is an important issue that the industry is concerned about. The main component of paper is cellulose, and the factors that determine the durability of paper include the type of papermaking raw materials, the physical and chemical properties of paper fibers, and the papermaking process. In ancient my country, handmade paper was mostly used. The raw materials of handmade paper are mainly long-fiber hemp, bark and other materials, wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H25/18
CPCD21H25/18
Inventor 田周玲陈红彦张铭任珊珊易晓辉龙堃闫智培
Owner NAT LIBRARY OF CHINA
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