Paper deacidification agent composition and deacidification method for acidified paper

A technology of composition and deacidification agent, applied in the post-processing of waste paper, etc., can solve the problems of dangerous operation, reduced mechanical strength of paper, high cost, and achieve the effect of enhancing folding endurance and tensile strength, and prolonging paper life.

Active Publication Date: 2019-02-22
首都博物馆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic base Ca(OH) commonly used in paper deacidification 2 , Mg(HCO 3 ) 2 It can only neutralize the acid on the surface of the paper, but cannot penetrate deeply into the fiber to completely deacidify, and the mechanical strength of the paper will be reduced after treatment
Diolamine, Magnesium Acetate / Trichlorethylene, Ba(OH) 2 / Methanol and other organic solvent deacidification methods are highly toxic and have certain limitations.
Ammonia, cyclohexylamine carbonate, morpholine, diethyl zinc, etc. are used as alkaline gases to deacidify, and there are disadvantages such as high cost and dangerous operation

Method used

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  • Paper deacidification agent composition and deacidification method for acidified paper
  • Paper deacidification agent composition and deacidification method for acidified paper

Examples

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Embodiment 1

[0037] Mix 0.01 parts by weight of scopolamine, 0.02 parts by weight of scopolamine, 0.4 parts by weight of lithium tetraborate (with a particle size of 80 μm) and 99.57 parts by weight of ethanol aqueous solution (50% by volume of ethanol), fully stir and ultrasonically oscillate for 20 minutes, then let stand. Obtain the paper deacidifying agent composition of this embodiment, its pH value is 8.74.

Embodiment 2

[0039] Mix 0.009 parts by weight of scopolamine, 0.018 parts by weight of hyoscyamine, 0.5 parts by weight of lithium tetraborate (with a particle size of 100 μm) and 99.473 parts by weight of methanol aqueous solution (60% by volume of ethanol content), fully stir and ultrasonically oscillate for 20 minutes, then let stand. Obtain the paper deacidifying agent composition of this embodiment, its pH value is 8.63.

Embodiment 3

[0041] Mix 0.01 parts by weight of scopolamine, 0.01 parts by weight of scopolamine, 0.3 parts by weight of lithium tetraborate (with a particle size of 90 μm) and 99.68 parts by weight of n-butanol aqueous solution (50% by volume of n-butanol), fully stir and ultrasonically vibrate for 20 minutes After standing still, the paper deacidifier composition of this embodiment was obtained, and its pH value was 8.45.

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Abstract

The present disclosure relates to a paper deacidification agent composition and a deacidification method for acidified paper. The composition comprises alkaloid, a soluble tetraborate and a solvent, wherein the alkaloid comprises one or more of scopolamine, hyoscyamine, demethylated hyoscyamine and anisodamine. The paper deacidification agent composition can complex with alum in the acidified paper so as to prevent the aluminum ion water from separating out acids, and can form alkali residues on the papers so as to moderate the secondary acidification of the paper; the influences on the appearances and colors of the paper are not great; besides the deacidification, the folding resistance and tensile strength of the paper are strengthened; and the pH values of the paper after the deacidification is 7 to 8.5, thereby effectively prolonging the paper life of paintings and calligraphies.

Description

technical field [0001] The disclosure relates to a paper deacidifying agent composition and a deacidifying method for acidified paper; in particular, it relates to a method for deacidifying ancient books of calligraphy and painting with a paper deacidifying agent composition. Background technique [0002] Calligraphy and painting are the carriers of culture and art, and there are a large number of collections in various comprehensive museums and folks across the country. Most of the paper used for calligraphy and painting is handmade paper. Traditional handmade paper (xuan paper, hemp paper, etc.) is a writing material made of interwoven plant fibers. Although the traditional handmade paper adopts the alkaline papermaking method, and fillers such as lime water and calcium carbonate are added during the papermaking process, in order to improve the water resistance of the paper during use, glue alum water composed of alum and natural rubber is often painted on the surface. In...

Claims

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Application Information

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IPC IPC(8): D21H25/18
CPCD21H25/18
Inventor 何秋菊王菊琳许昆赵瑞廷
Owner 首都博物馆
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