Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for delaying aging and yellowing of paper and aging and discoloring of dyes and pigments on the paper

A technology for aging and discoloration of paper, which is applied in the field of delaying the aging and yellowing of paper and the aging and discoloration of dyes and pigments on paper. It can solve the problems of no effective and large-scale treatment methods, achieve a high degree of scale, prolong the life of paper, The effect of delaying the color reaction

Pending Publication Date: 2020-09-25
SHAANXI NORMAL UNIV
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is very little research on this in the existing archives and cultural relics protection technology, and there is no effective and large-scale processing method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for delaying aging and yellowing of paper and aging and discoloring of dyes and pigments on the paper
  • Method for delaying aging and yellowing of paper and aging and discoloring of dyes and pigments on the paper
  • Method for delaying aging and yellowing of paper and aging and discoloring of dyes and pigments on the paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Put the books that need to be processed into the airtight box as a whole, and keep a 5mm gap between each book so that the gas can penetrate better. After vacuuming, fill it with argon, control the temperature in the box to 30°C, and the relative humidity to 65%. After 48 hours of treatment, evacuate to a pressure lower than 10mmHg; then mix argon and ethylene oxide at a volume ratio of 1:9, and fill the box at a rate of 1mmHg / min to normal pressure (760mmHg), and then keep 10h for gas treatment. After the treatment, use the water ring vacuum pump to pump out the gas in the box and fully contact with water, and then fully degrade it through ultraviolet light and then discharge it. After the pressure in the box is lower than 100mmHg, turn off the vacuum pump and fill it with nitrogen. Repeat this process twice and then turn it on. Box for taking out processed books.

Embodiment 2

[0033] Put the books to be processed into a closed box as a whole, and keep a 5mm gap between each book so that the gas can penetrate better. After vacuuming, fill it with argon gas. After 48 hours of treatment, evacuate to a pressure lower than 10mmHg; then mix argon and ethylene oxide with a volume ratio of 3:7, and fill the box at a rate of 2mmHg / min to normal pressure, and then keep it for 10h for gas deal with. After the treatment, use the water ring vacuum pump to pump out the gas in the box and fully contact with water, and then fully degrade it by ultraviolet light and then discharge it. After the pressure in the box is lower than 100mmHg, turn off the vacuum pump and fill it with nitrogen. Repeat this process twice and then turn it on. Box for taking out processed books.

Embodiment 3

[0035] Put the paper files that need to be processed into the airtight box as a whole, and keep a 5mm gap between each file so that the gas can penetrate better. After vacuuming, fill it with argon, and control the temperature in the box to 50°C and relative humidity to 90%. , after pretreatment for 48 hours, evacuate to a pressure lower than 10mmHg; then mix argon and ethylene oxide at a volume ratio of 5:5, and fill the box at a rate of 10mmHg / min to normal pressure, and then maintain it for 10h Perform gas treatment. After the treatment, use the water ring vacuum pump to pump out the gas in the box and fully contact with water, and then fully degrade it through ultraviolet light and then discharge it. After the pressure in the box is lower than 100mmHg, turn off the vacuum pump and fill it with nitrogen. Repeat this process twice and then turn it on. Box for taking out processed books.

[0036] In order to prove the beneficial effects of the present invention, the inventor...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for delaying aging and yellowing of paper and aging and discoloring of dyes and pigments on the paper. The method includes steps of: directly putting files, books, ancient calligraphies and paintings and other samples to be processed integrally into a closed box body; vacuumizing the box body and then introducing inert gas for pretreatment; and then vacuumizing until the pressure is lower than 10 mmHg, filling mixed gas of inert gas and ethylene oxide to normal pressure, and carrying out gas treatment, so that paper yellowing of files, books, ancient calligraphies and paintings and the like in long-term storage can be delayed, and aging, discoloration and fading of file writing, color printing ink and calligraphy and painting pigments are prevented. The method is easy to operate; an accelerated aging test proves that yellowing and blackening of paper can be effectively delayed after treatment, aging and fading of various archive writings, printing ink and calligraphy and painting pigments are prevented, archives, books and ancient calligraphies and paintings are not deformed, the original appearance is kept, and the mechanical strength of the paperis not affected.

Description

technical field [0001] The invention belongs to the technical field of archives and cultural relics protection, and in particular relates to a method for delaying the aging and yellowing of paper and the aging and discoloration of dyes and pigments on paper. Background technique [0002] Yellowing of paper is often considered one of the early signs of aging and deterioration. According to the nature and storage conditions of the paper, when the paper ages to a later stage, the yellow color may turn to brown, and the paper may become brittle, which seriously affects the acquisition of information recorded in books and archives, as well as the artistic value of ancient calligraphy and paintings. However, there are very few international and domestic studies on the change of paper color over time, and there is no literature report on the research on preventing paper discoloration. In addition, during the long-term preservation of archives, books, and ancient calligraphy and pa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D21H25/18D21H25/04A61L2/20
CPCD21H25/18D21H25/04A61L2/206
Inventor 李玉虎祁赟鹏周亚军赵光涛贾智慧汪泳
Owner SHAANXI NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com