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A deacidification method and deacidification device

A deacidification method and deacidification technology, applied in the field of deacidification, can solve the problems of relatively stringent requirements for instruments and equipment, limitations in industrial application, and inconspicuous deacidification effect, and achieve sample deformation, uniform deacidification effect, and enhanced mechanical properties Effect

Inactive Publication Date: 2017-08-01
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Currently widely used deacidification technologies mainly include solution method and gas phase method, but both have significant defects
The solution method needs to soak the sample to be treated in a deacidifying agent to neutralize the acidic substances in the sample and form an alkaline buffer. This process will cause defects such as deformation, wrinkling, and fading of the pigment on the paper sample, and it can only be operated on a single page. less efficient
Therefore, the method is limited in practical application
[0010] Gas-phase deacidification is a fast deacidification method with a wide range of applications. The commonly used deacidification agent is ammonia gas or amine-containing compounds such as cyclohexylamine carbonate, 1,4-oxazidine, etc., and Inflammable and explosive diethyl zinc, but due to the inconspicuous deacidification effect, poor durability, strong irritation, and needs to be carried out under high vacuum conditions, the requirements for instruments and equipment are relatively strict, resulting in its industrial application. extremely restrictive

Method used

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  • A deacidification method and deacidification device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Spread the paper to be deacidified on the movable table;

[0057] (2) Inject Mg(HCO pH=8.2) into the deacidification agent supply device 3 ) 2 Aqueous solution, and atomization treatment, spray the deacidification agent after atomization on the paper to be deacidified at a flow rate of 100mL / h, and the spraying time is 30s;

[0058] (3) Turn on the pulse power supply, adjust the current to 0.1A, and adjust the voltage to 75V to form a stable blue-violet linear filamentous plasma, and use the plasma to perform a full-range moving scan on the paper, and the scan time is 1min to complete the stripping process. Acid treatment.

[0059] The pH value and tensile strength of the deacidified paper were tested according to standard procedures to quantify the deacidification effect and determine the effect of deacidification on paper properties.

[0060] After deacidification treatment, the acidified paper was converted from acid (pH=6.0) to alkaline (pH=7.9), and the tens...

Embodiment 2

[0062] (1) Spread the paper to be deacidified on the movable table;

[0063] (2) Inject Mg(HCO pH=8.2) into the deacidification agent supply device 3 ) 2 Aqueous solution, and atomization treatment, spray the deacidification agent after atomization on the paper to be deacidified at a flow rate of 100mL / h, and the spraying time is 45s;

[0064] (3) Turn on the pulse power supply, adjust the current to 0.15A, and adjust the voltage to 75V to form a stable blue-violet linear filamentous plasma, and use the plasma to perform a full-range moving scan on the paper, the scan time is 1min, and the removal of the paper is completed. Acid treatment.

[0065] The pH value and tensile strength of the deacidified paper were tested according to standard procedures to quantify the deacidification effect and determine the effect of deacidification on paper properties.

[0066] After deacidification, the acidified paper was converted from acid (pH=6.2) to alkaline (pH=7.5), and the tensile ...

Embodiment 3

[0068] (1) Spread the paper to be deacidified on the movable table;

[0069] (2) Inject Mg(HCO pH=8.2) into the deacidification agent supply device 3 ) 2 Aqueous solution, and atomization treatment, spray the deacidification agent after atomization on the paper to be deacidified at a flow rate of 100mL / h, and the spraying time is 1min;

[0070] (3) Turn on the pulse power supply, adjust the current to 0.25A, and adjust the voltage to 70V to form a stable blue-violet linear filamentous plasma, and use the plasma to perform a full-range moving scan on the paper, the scan time is 1min, and the stripping is completed. Acid treatment.

[0071] The pH value and tensile strength of the deacidified paper were tested according to standard procedures to quantify the deacidification effect and determine the effect of deacidification on paper properties.

[0072] After deacidification, the acidified paper was converted from acid (pH=6.6) to alkaline (pH=8.1), and the tensile strength w...

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PUM

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Abstract

The invention discloses a deacidification method and a deacidification device, wherein the deacidification method comprises the following steps: (1) placing the sample to be deacidified in an atomized deacidification agent atmosphere; The sample to be deacidified by the deacidifying agent is processed. The sample to be deacidified is a single layer or a multi-layer stacked layer. The thickness of the sample to be deacidified is not more than 2mm. Step (1) and step (2) are carried out under normal temperature and pressure and air atmosphere. The deacidification method and deacidification device provided by the invention have wide application range, mild conditions, complete deacidification, and no damage to the morphology and structure of the sample to be deacidified.

Description

technical field [0001] The invention relates to the technical field of deacidification, in particular to a deacidification method and a deacidification device with a wide application range. Background technique [0002] There are many kinds of plant fiber products, among which paper is the most common. All kinds of documents, files, books, contracts, banknotes, scriptures, ancient calligraphy and paintings are all based on paper. Compared with other human cultural heritage, this kind of paper is the carrier The products are particularly fragile, not only vulnerable, but also prone to aging. [0003] In the splendid civilization history of the Chinese nation for 5,000 years, paper has been playing an important role in recording history, transmitting information, and continuing the essence of culture since its appearance, providing rich materials for people to study the changes of the times and historical development. [0004] As an important carrier of historical and cultura...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H25/18
Inventor 张溪文王庆莉徐绍艳
Owner ZHEJIANG UNIV
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