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Waterproof agent for file cover and preparation method of waterproof agent

A technology of waterproofing agent and archive bag, applied in textile and papermaking, fiber raw material processing, paper coating, etc., can solve the problems of yellowing of archives, moisture absorption of archives, affecting the life of archives, etc., so as to prolong the service life and achieve good waterproof effect. Effect

Inactive Publication Date: 2016-06-15
山东省实验动物中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As a precious original record of history, archives are the link of cultural inheritance. A large number of paper cultural relics that have been handed down to this day have undergone various changes in the external environment and their own physical and chemical properties. Over time, archival paper is vulnerable to moisture in the air. The impact of yellowing, mildew, aging, brittleness, damage and other diseases will seriously affect the life of the archives, and it is easy to cause serious losses to the archives with great protection value
At present, archives are generally stored in kraft paper file bags, and then put into filing cabinets for storage, but the existing kraft paper file bags do not have waterproof effect, and it is easy to make the files in the bag absorb water and get wet, which is not conducive to long-term storage; in addition, kraft paper file bags It is easy to fluff, damage and become thinner due to friction and folding, which is not conducive to the maintenance of paper files

Method used

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  • Waterproof agent for file cover and preparation method of waterproof agent
  • Waterproof agent for file cover and preparation method of waterproof agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] a. Accurately weigh 10g of propolis, 3g of beeswax and 2g of olive oil;

[0027] b. Follow the steps below to prepare a waterproofing agent for portfolios:

[0028] Step 1. Freeze the propolis at -4°C for 24 hours, and crush it into 40-mesh particles;

[0029] Step 2. Put the granules in step 1 into the solution mixed with 100g of absolute ethanol and petroleum ether according to the volume ratio: 1:1, and extract at a temperature of 70°C for 4 hours to obtain the extract, which is plant gum extraction liquid;

[0030] Step 3, add activated carbon to the extract in step 2 and stir for 10 minutes to decolorize to obtain 93ml of decolorized extract;

[0031] Step 4. Take 90ml of the decolorized extract in step 3 and concentrate it to 30ml by rotary evaporation at 50°C to obtain a concentrated solution;

[0032] Step 5: Heat the concentrated liquid in a water bath to 80°C, add beeswax and olive oil, dissolve evenly, and keep the temperature at 55°C to obtain the product...

Embodiment 2

[0034] a. Accurately weigh 12g of poplar gum, 4g of beeswax, and 0.5g of olive oil;

[0035] b. Follow the steps below to prepare a waterproofing agent for portfolios:

[0036] Step 1. Put the poplar gum at -4°C and freeze it for 24 hours, and crush it into 40-mesh particles;

[0037] Step 2. Put the granules in step 1 in the solution mixed with 100g of absolute ethanol and petroleum ether according to the volume ratio: 2:1, and extract at a temperature of 80°C for 2 hours to obtain the extract, which is vegetable gum extraction liquid;

[0038] Step 3, add activated carbon to the extract in step 2 and stir for 10 minutes to decolorize to obtain 94ml of decolorized extract;

[0039] Step 4. Take 90ml of the decolorized extract in step 3 and concentrate it to 30ml by rotary evaporation at 50°C to obtain a concentrated solution;

[0040] Step 5: Heat the concentrated solution in a water bath to 70°C, add beeswax and olive oil, dissolve evenly, and keep the temperature at 60°C...

Embodiment 3

[0041] Embodiment 3 effect detection

[0042] Waterproof test: dip a brush into the heat-preserving waterproofing agent of Example 1 and apply it evenly on the surface of the file bag, and then conduct a water repellency test after it is naturally air-dried. The "effect" is obvious, and the water droplets turn into rolling water droplets one by one, without wetting the paper.

[0043] Water absorption test: according to the national standard GB / T1540-1989, the water absorption of the kraft paper coated with the waterproofing agent of Example 1 and the kraft paper base paper were tested, and the detected values ​​were respectively 26g / m 2 and 190g / m 2 . It shows that the paper coated with the waterproofing agent of Example 1 has remarkable waterproofing effect.

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Abstract

The invention discloses a waterproof agent for archive bags and a preparation method thereof, and relates to the technical field of archive protection. The waterproof agent of the invention comprises the following components in parts by weight: 85-95 parts of vegetable gum extract, 2-4 parts of beeswax, olive 0.5-3 parts of oil are mixed, the vegetable gum is gum or propolis, and the extraction is a mixed extraction of ethanol and petroleum ether. The waterproof agent for file bag of the present invention has good waterproof effect, and in addition, it can make the file bag not easy to fluff and become thin due to repeated taking and folding, and prolongs the service life of the file bag.

Description

technical field [0001] The invention belongs to the technical field of file protection, and in particular relates to a water-repellent agent for file bags and a preparation method thereof. Background technique [0002] Archives are directly formed historical records. "Directly formed" means that archives have inherited the originality of documents, and "historical records" means that archives have not only inherited the originality of documents, but also inherited the record of documents, and are original documents that reproduce the true appearance of history. It is precisely because archives inherit the original record of documents and have historical reproducibility, so archives have the important attribute of credential value, which is different from library information materials and cultural relics. [0003] As a precious original record of history, archives are the link of cultural inheritance. A large number of paper cultural relics that have been handed down to this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/14D21H19/18D21H19/14
CPCD21H21/14D21H19/14D21H19/18
Inventor 江东张思坚马守芹马宁
Owner 山东省实验动物中心
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