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De-acidification reinforcement protective agent and preparation method and applications thereof

A technology of strengthening protective agent and deacidification, which is applied in the field of restoration and protection of paper cultural relics. It can solve the problems of unfriendly environment, fading handwriting, and difficult process control, etc., and achieves simple and easy control of the operation process, uniform dispersion of the solvent system, and improved The effect of mechanical strength

Active Publication Date: 2020-03-27
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to literature reports, the currently commonly used deacidification methods are aqueous deacidification method, organic solvent deacidification method and gas phase deacidification method. Paper is prone to deformation and adhesion; the paper after organic solvent deacidification method dries quickly and is not easy to wrinkle, but the deacidification effect is not ideal, which may easily cause handwriting to fade and paper to have peculiar smell
Moreover, non-aqueous organic solvents are toxic and flammable, unfriendly to the environment and have great potential safety hazards; the gas phase deacidification method has the advantages of strong diffusivity, but there are hidden dangers of explosion, the process is difficult to control, and the deacidification equipment conditions are harsh and cannot be effective. Disadvantages such as the formation of alkali residues

Method used

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  • De-acidification reinforcement protective agent and preparation method and applications thereof
  • De-acidification reinforcement protective agent and preparation method and applications thereof
  • De-acidification reinforcement protective agent and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 1 g of γ-aminopropyltriethoxysilane and add it to 1000 g of ultrapure water, fully stir and mix it under the assistance of 30KHz ultrasonic power and 60r / min mechanical stirring to obtain solution 1, and slowly add 1 g of nano-magnesium carbonate to solution 1. Power 30KHz ultrasonic and 60r / min mechanical stirring to obtain solution 2, slowly add 50g of toluene diisocyanate to solution 2, power 30KHz ultrasonic and 60r / min mechanical stirring to obtain solution 3, slowly add polyethylene wax emulsion 1g to solution 3 , fully stirred at 18°C ​​and ultrasonicated for 10 minutes to obtain a deacidification strengthening and protecting agent.

[0031] Soak 6-11 sheets of paper at room temperature and treat them with 800-1000g of the above-mentioned deacidification strengthening and protecting agent for 15 minutes, and then put them in a constant temperature and humidity environment to hang samples for drying for 24 hours, test the pH and mechanical properties of the pa...

Embodiment 2

[0033] Take 3g of N-(2-aminoethyl)-3-aminopropyltriethoxysilane and add it to 1000g ultrapure water, fully stir and mix under the power of 45KHz ultrasonic wave and 70r / min mechanical stirring to obtain solution 1, in Slowly add 5g of nano-calcium carbonate to solution 1 and mix it with 45KHz ultrasonic power and 70r / min mechanical stirring to obtain solution 2. Slowly add 80g of toluene diisocyanate to solution 2 and mix with 45KHz ultrasonic power and 70r / min mechanical stirring to obtain solution 3. Slowly add 2 g of polyethylene wax emulsion to solution 3, stir well at 30°C and perform ultrasonication for 12 minutes to obtain a deacidification strengthening and protecting agent.

[0034] Soak 6-11 sheets of paper at room temperature and treat with 800-1000g of the above-mentioned deacidification strengthening and protecting agent for 15 minutes, then put them in a constant temperature and humidity environment to hang samples for drying for 30 hours, test the pH and mechanic...

Embodiment 3

[0036] Take 5g of N-β-(aminoethyl)-γaminopropylmethyldimethoxysilane and add it into 1000g of ultrapure water, fully stir and mix with the power of 60KHz ultrasonic wave and 80r / min mechanical stirring to obtain solution 1, In solution 1, slowly add mixed nano-magnesium carbonate 10g and nano-calcium carbonate 5g at a power of 60KHz ultrasonic and 80r / min mechanical stirring to obtain solution 2, slowly add diphenylmethane diisocyanate (MDI) 150g in solution 2 at a power of 60KHz Ultrasound and 80r / min mechanical stirring were mixed to obtain solution 3, and 3 g of polyethylene wax emulsion was slowly added to solution 3, fully stirred at 40°C and ultrasonically performed for 15 minutes to obtain a deacidification strengthening and protecting agent.

[0037]Soak 6-11 sheets of paper at room temperature and treat them with 800-1000g of the above-mentioned deacidification strengthening and protecting agent for 15 minutes, and then put them in a constant temperature and humidity e...

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Abstract

The invention discloses a de-acidification reinforcement protective agent and a preparation method and applications thereof. The de-acidification reinforcement protective agent is prepared from following components in percentage by weight: 0.1 to 1% of an amino silane coupling agent, 5 to 20% of polycarbamate, 0.1 to 3% of nano metal carbonate, 0.1 to 0.5% of polyethylene wax emulsion, and the balance being ultrapure water. The prepared protective agent has the advantages of strong permeability, good dispersibility, safety, and environmental friendliness, and is nontoxic and harmless to the environment and paper. The operation is simple and convenient. The protective agent has a good de-acidification reinforcement protective effect, processed paper is weakly alkaline and is resistant to aging, the service life of paper is prolonged, moreover, after the protection treatment, the color of the paper surface does not change, and the old paper is restored as the old.

Description

technical field [0001] The invention provides a deacidification reinforcing and protecting agent and its preparation method and application, belonging to the technical field of repairing and protecting paper cultural relics. Background technique [0002] For many centuries, paper documents have been the most important carrier of written information, such as written documents, books, archives, newspapers and paintings, as precious products that record human history and continue cultural essence, and are an important category of non-renewable history Cultural heritage has very important artistic and cultural value and historical and cultural value. However, with the passage of time, affected by various factors, a large number of paper documents are facing a series of problems such as aging, yellowing and even pulverization to varying degrees due to acidification and other reasons, which greatly reduces their usability and quality. Storage life. At present, at least 1 / 3 of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H25/18
CPCD21H25/18
Inventor 沈彬张云凤
Owner SOUTHEAST UNIV
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