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Protective agent for aged paper sheet and protection method of aged paper sheet

A protective agent and paper technology, which is applied in papermaking, waste paper post-processing, textiles and papermaking, etc., can solve the problems that cannot be further popularized, high requirements, complicated process, etc., achieve good repair and removal effect, high protection efficiency, The effect of sufficient raw materials

Active Publication Date: 2018-07-06
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these paper protection methods still have constraints such as complex process, high requirements and high cost, and cannot be further popularized.

Method used

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  • Protective agent for aged paper sheet and protection method of aged paper sheet
  • Protective agent for aged paper sheet and protection method of aged paper sheet
  • Protective agent for aged paper sheet and protection method of aged paper sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Accurately measure 49.75g of absolute ethanol and 49.75g of ionic liquid into a beaker, then add 0.5g of nanocellulose, put it in a sealed container, heat up to 90°C to dissolve, stir and mix well, put it in a sealed container and use it directly on four sides Apply the paper to be treated with the applicator, brush back and forth at 25°C for 10-15mins; put the treated paper in a vacuum drying oven at 75°C for 3 hours, take it out to room temperature, wash it with ethanol, at 25°C, 50% Dry naturally under low humidity.

[0096] Characterization of old aged paper prior to treatment in the present invention.

[0097] see figure 1 , figure 1 It is the SEM scanning electron micrograph of the whole picture of the paper fiber before the old aging paper is unprotected.

[0098] see figure 2 , figure 2 It is the SEM scanning electron microscope picture of the paper fiber section of the old aging paper before protection.

[0099] Characterize the old and aged paper treat...

Embodiment 2

[0108] Accurately measure 49.625g of absolute ethanol and 49.625g of ionic liquid into a beaker, then add 0.75g of nanocellulose, stir and mix thoroughly, place in a sealed container, heat up to 90°C to dissolve, stir and mix thoroughly Evenly, put it in a sealed container and directly apply the paper to be treated with a four-sided applicator, brush back and forth at 25°C for 10-15mins; put the treated paper in a vacuum drying oven at 75°C for 3 hours, take it out and cool it to room temperature, and use Wash with ethanol and dry naturally at 25°C and 50% humidity.

[0109] The properties and indexes of the old aged paper after treatment in Example 2 of the present invention are compared with those before treatment.

[0110] Referring to Table 2, Table 2 shows the properties and indexes of the paper before and after treatment in Example 2.

[0111] Table 2

[0112]

Embodiment 3

[0114] Accurately measure 49.5g of anhydrous ethanol and 49.5g of ionic liquid into a beaker, add 1.00g of nanocellulose, put it in a sealed container, heat up to 90°C to dissolve, stir and mix evenly, put it in a sealed container and directly use four-sided coating Apply the cloth to the paper to be treated, brush back and forth at 25°C for 10-15mins; put the treated paper in a vacuum drying oven at 75°C for 3 hours, take it out to room temperature, wash it with ethanol, at 25°C, 50% Dry naturally under humidity.

[0115] The properties and indexes of the old aged paper after treatment in Example 3 of the present invention are compared with those before treatment.

[0116] Referring to Table 3, Table 3 shows the properties and indexes of the paper before and after treatment in Example 3.

[0117] table 3

[0118]

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Abstract

The invention provides a protective agent for an aged paper sheet. The protective agent is prepared from a nanocellulose solution, wherein the nanocellulose solution is obtained by dissolving nanocellulose in a solvent. The protective agent, in the form of the nanocellulose solution, is used as the protecting agent for the aged paper sheet; the nanocellulose can be used for dissolving and regenerating the fiber of a paper sheet; external cellulose is combined with the self fiber of the paper sheet; not only can the mechanical strength of the paper sheet be enhanced, but also the influences onthe chrominance and pH (potential of Hydrogen) value of the paper sheet do not basically exist; the purpose of protecting the aged paper is achieved. The protective agent provided by the invention canbe used for realizing favorable restoration and removal effects on the aged paper sheet, moreover, cannot have obvious influences on the surface and pH value of the paper sheet, cannot also have a great influence on the chrominance of the paper sheet, helps to store the paper sheet, moreover, is high in protection efficiency and sufficient in raw material, is nontoxic, harmless, economical, practical, green and environment-friendly, is simple in protection method and short in treatment time, is easy to implement, is high in generalization performance, and has important significance on propelling the protection progress of the aged paper sheet.

Description

technical field [0001] The invention belongs to the technical field of paper protection, and relates to a protective agent for aged paper and a protection method for aged paper, in particular to a nano-cellulose protective agent for aged paper and a protection method for aged paper. Background technique [0002] Chinese culture has a long history, and Chinese civilization has a long river of stars. As one of the four great inventions of our country, papermaking has gone through the history of our country for thousands of years and has been fully utilized and developed. Since ancient times, our country has been advocating culture and education, and literati are good at writing and ink, leaving many excellent works handed down from generation to generation. All dynasties and dynasties in our country have paid attention to recording historical facts and compiling geographical and physical records. Therefore, our country still retains a large number of paper cultural relics suc...

Claims

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Application Information

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IPC IPC(8): D21H19/34D21H25/18D21H21/14
CPCD21H19/34D21H21/14D21H25/18
Inventor 潘晨倩方岩雄谭伟蔡晓兰
Owner GUANGDONG UNIV OF TECH
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