Pulp composite repair method and repair pulp

A technology of paper cultural relics and pulp, applied in non-woody plant/crop pulp, papermaking, post-processing of waste paper, etc., can solve the problems of handwriting, pigment smearing, cracking, unsuitable for repairing contemporary paper art, etc. Achieve the effects of increasing opacity, repairing stability, promoting suspension and dispersion

Active Publication Date: 2021-07-27
FUDAN UNIV
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AI Technical Summary

Problems solved by technology

Pulp manual dripping method has been used in China since 2009, but the method used relies on bamboo curtains as the carrier, and repairing paper cultural relics on bamboo curtains will produce obvious curtain lines at the repaired places, which is not suitable for repairing Many documents from the period of the Republic of China without curtain patterns, and contemporary paper artworks without curtain patterns
In addition, the current domestic pulp dripping method only uses gravity to remove water. When the water in the pulp moves and diffuses on the plane of the paper cultural relics, it will easily cause handwriting and pigments to smudge.
The current pulp dripping method only forms a layer of patch paper after repairing and drying, and the cultural relics are very easy to crack at the repaired place when they are read and used.

Method used

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  • Pulp composite repair method and repair pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 30. The program lists for concerts in the period of the Republic of China are all made of machine-made paper without curtains. The paper is severely damaged, acidified, browned, and brittle, and needs to be repaired.

[0036] figure 1 It is a flowchart of the method for repairing fragile water-fearing paper cultural relics according to Embodiment 1-7 of the present invention.

[0037] Such as figure 1 As shown, the process flow of the repair method in this embodiment is as follows:

[0038] Step 1, use 3% sodium carboxymethylcellulose aqueous solution to bond a layer with a thickness of 0.02mm and a weight of 5g / m on the damaged edge of the paper cultural relic 2 Samsuma tissue paper;

[0039] Step 2, turn the paper cultural relics over so that the Sanya thin paper is located under the damaged part, place it on the polyester cloth, and put the polyester cloth and the paper cultural relics flat on the suction table;

[0040] Step 3, use plastic film to seal all areas...

Embodiment 2

[0056] In January 1950, the late Republic of China document "The Melting Pot of the Great Era: An Introduction to East China Military and Political University" was published by the Political Department of East China Military and Political University. Use the method and material provided in Example 1 and use similar domestic traditional methods (only fill with pulp, not stick ultra-thin paper, but add the use of suction workbench) to repair respectively, and then respectively according to ISO 1924-2: 1994Paper and board-Determination of tensile properties-Part 2:Constant rate of elongation method and ISO 5626:1993Paper-Determination of Folding Endurance determine its tensile strength and folding endurance. The width of the test strip is 15mm, and the repaired part of the test strip is a square of 15mm x 15mm; the distance between the samples used for the tensile strength is 100mm, and the tensile speed is 10mm / min. After measuring the value of the test strip, take the average v...

Embodiment 3

[0061] "English Yitong" issued by Shanghai Commercial Press in May 1933 was printed on machine-made paper with a thickness of 0.11mm and no curtain grain. Its pH was 3.4 and its average tensile strength was 6.9N.

[0062] Respectively use the method provided by Example 1, materials and use similar traditional methods (only fill with pulp, do not stick ultra-thin paper, but carry out on the negative pressure of the suction workbench) to carry out repair, and then use as example 2 tensile strength and folding endurance test method for the determination of mechanical strength.

[0063] The test results are as follows:

[0064] When repaired with the traditional pulp dripping method in China, the average tensile strength of 20 test strips is only 4.7N-5.4N, and 18 test strips are broken from the edge of the repaired part (that is, the joint), showing that the repair strength is insufficient . When using the method of Example 1 to repair, the transverse average tensile strength o...

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Abstract

The invention provides a pulp repair method for fragile water-resistant paper cultural relics and the repairing pulp, belonging to the field of cultural relic restoration and protection. The restoration pulp provided by the invention comprises the following components: inorganic matter powder, not more than 0.9%; suspending agent, not more than 0.6%; original pulp, the rest. The pulp repair method for fragile water-resistant paper cultural relics provided by the present invention comprises the steps of: S1, adhering a layer of thin paper on the damaged edge of the paper cultural relics; S2, turning the thin paper over so that the thin paper is placed on the lining under the damaged part, Place the whole on the suction table; S3, close all areas on the suction table except paper cultural relics; S4, turn on the negative pressure device to generate negative pressure under the suction table; S5, absorb the pulp for cultural relics restoration, and repeatedly drip the paper Damaged parts and damaged edges of quality cultural relics; S6, dry. Because the invention adopts a new restoration technique and new paper pulp, the risk of handwriting and pigments being smudged by water can be reduced, the pulp fibers in the repaired place are more evenly distributed, and the restored cultural relics have higher mechanical strength.

Description

technical field [0001] The invention specifically relates to a pulp repair method for fragile water-resistant paper cultural relics and repaired pulp, and belongs to the field of cultural relic restoration and protection. Background technique [0002] The methods of repairing damaged paper cultural relics with pulp can be divided into two categories: pulp repairing machine method and pulp manual dripping method. Pulp manual dripping method has been used in China since 2009, but the method used relies on bamboo curtains as the carrier, and repairing paper cultural relics on bamboo curtains will produce obvious curtain patterns at the repaired places, which is not suitable for repairing Many documents from the period of the Republic of China without curtain patterns, and contemporary paper artworks without curtain patterns. In addition, the current domestic pulp dripping method only uses gravity to remove water. When the water in the pulp moves and diffuses on the plane of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H25/18D21H11/12D21H17/67D21H21/14
CPCD21H11/12D21H17/67D21H17/675D21H21/14D21H25/18
Inventor 谢守斌
Owner FUDAN UNIV
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