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A kind of hydrophobic element book paper and preparation method thereof

A meta-book paper and hydrophobic technology, which is applied in the field of papermaking, can solve the problems of high moisture absorption, mildew of artworks, and large demand for product differentiation, so as to improve the bonding force between fibers, prevent moisture absorption and mildew, and prolong storage the effect of time

Active Publication Date: 2022-02-22
杭州富阳大竹元竹纸有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The fiber raw material used in Yuanshu paper is generally bamboo pulp, which has short fibers, good miscellaneous cells, and poor fiber bonding strength. Therefore, the fiber tension of Yuanshu paper is not strong enough, and it is not resistant to pulling or tearing. It is easy to break during display and cause loss
[0005] 2. Water absorption and ink absorption of Yuanshu paper
[0006] The production process of the existing Yuanshu paper is single, and its water absorption and ink absorption are also relatively single
Generally, the water absorption and ink absorption are controlled by sizing in the pulp. This method often has poor uniformity and unstable sizing effect; in addition, after chemical sizing, the expressiveness of Yuanshu paper will deteriorate, which is difficult for artists or art lovers. In pursuit of individuality and microscopic expressiveness, readers require that the water absorption and ink absorption of Yuanshu paper vary greatly, and the demand for product differences is very large; it is difficult to achieve precise differential adjustment by sizing
[0007] 3. Moisture-proof and mildew-proof problems of Yuanshu paper
[0008] Yuanshu paper, as a kind of art paper, often records valuable artistic content, but as a material made of bamboo pulp fiber, it has high moisture absorption and is prone to mold, especially in the south where it is relatively humid, which will cause artistic Mildew and loss of works

Method used

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  • A kind of hydrophobic element book paper and preparation method thereof
  • A kind of hydrophobic element book paper and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A kind of preparation method of hydrophobic element book paper of the present embodiment, described method comprises the steps:

[0041](1) Prepare the purchased oxidized nanocellulose (that is, cotton pulp nanocellulose prepared by TEMPO oxidation-high pressure homogenization) into a nanocellulose aqueous suspension with a concentration of 1%; Concentration of 1.0% nanocellulose water suspension is evaporated to make the suspension gel-like; then in another reactor, the dispersant N-N-dimethylformamide and gel-like nanocellulose are mixed according to the ratio Evenly, heat up to 85°C and keep stirring for 4 hours, continue to add n-heptanoic anhydride and 4-dimethylaminopyridine, disperse at high speed (800 rpm) for 15 minutes, and heat up to 100°C, react for 2 hours, cool for 15 minutes, and then use methanol and Washing with deionized water to obtain anhydride-modified nanocellulose; wherein: the mass ratio of nanocellulose, n-heptanoic anhydride, and 4-dimethylamin...

Embodiment 2

[0045] A kind of preparation method of hydrophobic element book paper of the present embodiment, described method comprises the steps:

[0046] (1) Prepare the purchased oxidized nanocellulose (that is, cotton pulp nanocellulose prepared by TEMPO oxidation-high pressure homogenization) into a nanocellulose aqueous suspension with a concentration of 0.8%; Concentration of 1.0% nanocellulose water suspension is evaporated to make the suspension gel-like; then in another reactor, the dispersant N-N-dimethylformamide and gel-like nanocellulose are mixed according to the ratio Evenly, heat up to 80°C and keep stirring for 8 hours, continue to add n-heptanoic anhydride and 4-dimethylaminopyridine, disperse at high speed (1000 rpm) for 20 minutes, and heat up to 100°C, react for 4 hours, cool for 20 minutes, and then use methanol and Washing with deionized water to obtain anhydride-modified nanocellulose; wherein: the mass ratio of nanocellulose, n-heptanoic anhydride, and 4-dimethyl...

Embodiment 3

[0050] A kind of preparation method of hydrophobic element book paper of the present embodiment, described method comprises the steps:

[0051] (1) Prepare the purchased oxidized nanocellulose (that is, cotton pulp nanocellulose prepared by TEMPO oxidation-high pressure homogenization) into a nanocellulose aqueous suspension with a concentration of 1.2%; Concentration of 1.0% nanocellulose water suspension is evaporated to make the suspension gel-like; then in another reactor, the dispersant N-N-dimethylformamide and gel-like nanocellulose are mixed according to the ratio Evenly, heat up to 80°C and keep stirring for 6 hours, continue to add n-heptanoic anhydride and 4-dimethylaminopyridine, disperse at high speed (2000 rpm) for 10 minutes, and heat up to 100°C, react for 3 hours and cool for 15 minutes, then use methanol and Washing with deionized water to obtain anhydride-modified nanocellulose; wherein: the mass ratio of nanocellulose, n-heptanoic anhydride, and 4-dimethyla...

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Abstract

The invention discloses a hydrophobic meta-book paper and a preparation method thereof. The hydrophobic meta-book paper comprises bamboo fiber and hydrophobically modified nano-cellulose, and the weight of the hydrophobic meta-book paper is 24-30g / m 2 , the water absorption is 12‑15mm / 60min, and the transverse tear index is 18.5‑20mN m 2 / g, the longitudinal tensile strength is 1.2-1.5KN / m; wherein: the mass ratio of the bamboo fiber of the yuanshu paper to the hydrophobically modified nanocellulose is 1:0.005-0.01. In the present invention, the modified nanocellulose is added to the Yuanshu paper, which improves the hydrophobicity of the Yuanshu paper, and effectively prevents moisture and mildew, so that it is not easy to absorb moisture and become moldy when the ambient humidity is high, thereby prolonging its life. save time. In addition, the hydrophobically modified nano-cellulose added in the present invention can be closely combined with pulp fibers, which improves the binding force between fibers and can significantly improve the strength performance of Yuanshu paper.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a hydrophobic element book paper and a preparation method thereof. Background technique [0002] Yuanshu paper is a kind of Yuanshu paper made of bamboo as the main raw material, after a series of treatments, and made by hand-made papermaking method. It is a traditional art paper. Won the favorite of calligraphy and painting lovers. However, the water absorption and ink moistening properties of Yuanshu paper are single, and there is also a lack of serialized products with different properties; in addition, the strength of Yuanshu paper is poor, and it is easy to be damaged during use; it has high moisture absorption and is easy to mildew; therefore, Yuanshu paper The differential water absorption and ink absorption of book paper and the proper improvement of its strength performance have become one of the key links in production. The technical problem to be solv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21H11/12D21H11/18D21H11/20D21F13/02C08B15/06
CPCD21H27/00D21H11/12D21H11/18D21H11/20D21F13/02C08B15/06
Inventor 李文德李松娟
Owner 杭州富阳大竹元竹纸有限公司
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