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Composite reinforcing agent and preparation method thereof, and reinforcing method of aged paper

A technology of reinforcing agent and paper, which is applied in the direction of adding anti-aging agent for paper, textiles and papermaking, papermaking, etc. It can solve the problems of mechanical strength reduction, mechanical strength reduction, paper discoloration, etc., and achieve mechanical properties. Enhanced mechanical properties, raw materials sufficient effect

Active Publication Date: 2017-12-22
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the paper protection technology disclosed in the prior art is not perfect. The survey shows that more than 60% of modern documents and books in most libraries and archives in my country have serious acidification and mechanical strength decline; and a large amount of paper Severe discoloration, ink stains are blurred and difficult to read, mechanical strength is greatly reduced or even broken at the touch of a finger

Method used

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  • Composite reinforcing agent and preparation method thereof, and reinforcing method of aged paper
  • Composite reinforcing agent and preparation method thereof, and reinforcing method of aged paper
  • Composite reinforcing agent and preparation method thereof, and reinforcing method of aged paper

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preparation example Construction

[0053]The present invention also provides a preparation method of the composite reinforcing agent described in the above technical solution, comprising the following steps:

[0054] A) cationic starch is mixed with the solvent of the first amount to obtain a cationic starch solution;

[0055] b) cationic guar gum, the solvent of the second consumption and cosolvent are mixed to obtain cationic guar gum solution;

[0056] c) adding the cationic guar gum solution to the cationic starch solution and mixing to obtain a composite reinforcing agent.

[0057] In the present invention, the cationic starch is first mixed with the first amount of solvent to obtain a cationic starch solution. In the present invention, the cationic starch is the same as that described in the above technical solutions, and details are not repeated here. In the present invention, the solvent in the first amount is a part of the solvent in the above technical solution. In the present invention, the mass r...

Embodiment 1

[0075] (1) Accurately measure 49.75g of absolute ethanol and 49.75g of distilled water into a beaker, then add 0.5g of cationic starch, fully stir and mix to obtain a cationic starch solution, and place it in a sealed container to prevent volatilization from exposure to the air; then , accurately measure 44.75g of absolute ethanol, 44.75g of distilled water and 10g of betaine into a beaker, then add 0.5g of cationic guar gum, fully stir and mix to obtain a cationic guar gum solution; then pour the above cationic guar gum solution into into the previously prepared cationic starch solution, fully stirring and mixing to obtain a composite reinforcing agent.

[0076] (2) Put the composite reinforcing agent obtained in step (1) in a sealed container, directly apply a brush to the paper to be treated, and apply repeatedly at 25°C (after each application of the composite reinforcing agent volatilizes, the number of applications is 4 times) After 13 minutes, the paper coated with the ...

Embodiment 2

[0083] (1) Accurately measure 49.625g of absolute ethanol and 49.625g of distilled water into a beaker, then add 0.75g of cationic starch, fully stir and mix to obtain a cationic starch solution, and place it in a sealed container to prevent volatilization from exposure to the air; then , accurately measure 44.625g of absolute ethanol, 44.625g of distilled water and 10g of betaine into a beaker, then add 0.75g of cationic guar gum, fully stir and mix to obtain a cationic guar gum solution; then pour the above cationic guar gum solution into into the previously prepared cationic starch solution, fully stirring and mixing to obtain a composite reinforcing agent.

[0084] (2) Put the composite reinforcing agent obtained in step (1) in a sealed container, directly apply a brush to the paper to be treated, and apply repeatedly at 25°C (after each application of the composite reinforcing agent volatilizes, the number of applications is 4 times) After 12 minutes, the paper coated wit...

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Abstract

The invention provides a composite reinforcing agent and a preparation method thereof, and a reinforcing method of aged paper. The composite reinforcing agent is prepared from raw materials comprising the following components in parts by weight: 0.5 to 2.5 parts of cationic starch, 0.5 to 2.5 parts of cationic guar gum, 50 to 2000 parts of a solvent, and 8 to 12 parts of a cosolvent. Compared with the prior art, the composite reinforcing agent provided by the invention has the advantages that during reinforcement protection on paper, not only the handwriting of the paper is hardly influenced, but also the mechanical property and the ageing resistance thereof can be improved. An experiment result shows that on the basis of little influence on the color and pH value of the paper treated by using the composite reinforcing agent provided by the invention, the mechanical property thereof is increased by about 45 percent; moreover, after ageing is accelerated in a wet-hot environment, the reinforcement effect can be maintained to be 99.5 percent or more, and the ageing resistance is better.

Description

technical field [0001] The invention relates to the technical field of paper protection, and more particularly, to a composite reinforcing agent and a preparation method thereof, and a reinforcing method for aged paper. Background technique [0002] Chinese culture has a long history, and the Chinese civilization is full of stars. As one of my country's four great inventions, papermaking has gone through thousands of years of history and has been fully utilized and carried forward. Since ancient times, my country has attached great importance to literature and education, and the literati have been good at writing and ink, leaving many masterpieces handed down from time to time. my country's dynasties and generations have paid attention to recording historical facts and compiling geographical and physical records. Therefore, my country still retains a large number of books, archives and calligraphy and painting and other paper cultural relics. These paper materials are the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/14D21H25/18D21H21/14D21H21/18D21H25/06
CPCD21H19/14D21H21/143D21H21/18D21H25/06D21H25/18
Inventor 潘晨倩吴婷张圣洁穆巧文高恒志陈志鹏方岩雄谭伟蔡晓兰
Owner GUANGDONG UNIV OF TECH
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