Natural polymer modified reinforcing agent and preparation method thereof

A technology of natural macromolecules and enhancers, which is applied in the addition of enhancers, non-polymer organic compounds, and non-fiber pulps, etc., can solve the problems of toxic price of human body and ungreen chemical reagents, and achieve sufficient supply and preparation steps. Easy operation, simple raw material formula effect

Pending Publication Date: 2022-01-28
SHANGHAI CHANGFA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, general patents disclose that starch is grafted with some monomers as reinforcing agents, but these monomers and the chemical reagents involved are not green, toxic to the human body and expensive

Method used

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  • Natural polymer modified reinforcing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Take 200g of hemicellulose and 650g of water in a 2L glass reactor, stir and disperse for 10min, add 15g of sodium hydroxide, and react at 25°C for 30min to obtain material A;

[0040] (2) Add 1 g of manganese dioxide and 10 g of hydrogen peroxide to the material A obtained in step (1) and react at 25° C. for 60 minutes to obtain material B;

[0041] (3) Add 120 g of cornstarch and 20 g of boric acid to the material B prepared in step (2), and stir at 25° C. for 10 min to obtain material C;

[0042] (4) Add 20 g of 10% sulfuric acid and 2 g of sodium bisulfite to the material B obtained in step (2), and stir at 25° C. for 10 min to obtain the product.

Embodiment 2

[0044] (1) Take 200 g of hemicellulose xylanase degradation product and 650 g of water in a 2L glass reactor, stir and disperse for 10 min, add 15 g of potassium hydroxide, and react at 25 ° C for 30 min to obtain material A;

[0045] (2) Add 2 g of ferric chloride and 10 g of hydrogen peroxide to the material A obtained in step (1) and react at 25° C. for 60 minutes to obtain material B;

[0046] (3) Add 150 g of cornstarch and 25 g of boric acid to the material B prepared in step (2), and stir at 25° C. for 10 min to obtain material C;

[0047] (4) Add 20 g of 10% sulfuric acid and 2 g of sodium sulfite to the material B prepared in step (2), and stir at 25° C. for 10 min to obtain the product.

Embodiment 3

[0049] (1) Take 220g of hemicellulose and 700g of water in a 2L glass reactor, stir and disperse for 15min, add 20g of sodium hydroxide, and react at 25°C for 30min to obtain material A;

[0050] (2) Add 2g of lithium chloride, 10g of hydrogen peroxide and 10g of sodium hypochlorite solution to the material A obtained in step (1) and react at 25°C for 90min to obtain material B;

[0051] (3) Add 200 g of potato starch and 20 g of borax to the material B prepared in step (2), and stir for 10 min at 25° C. to obtain material C;

[0052] (4) Add 20 g of 10% oxalic acid and 2 g of sodium thiosulfate to the material B prepared in step (2), and stir at 25° C. for 5 min to obtain the product.

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Abstract

The invention discloses a natural polymer modified reinforcing agent and a preparation method thereof. The natural polymer modified reinforcing agent comprises the following components in parts by weight: 0.17 to 0.22 part of natural polymer and degradation products thereof, 0.1 to 0.2 part of starch, 0.01 to 0.02 part of activating substance, 0.02 to 0.04 part of acidic substance, 0.008 to 0.2 part of oxidizing agent, 0.02 to 0.03 part of cross-linking agent, 0.001 to 0.002 part of catalyst, 0.002 to 0.005 part of reducing substance and 0.6 to 0.7 part of water. According to the natural polymer reinforcing agent prepared by the invention, natural polymers with wide renewable sources are used as main raw materials, so that efficient utilization of resources can be realized, and waste is turned into wealth; the prepared natural polymer is cheap, easy to obtain and sufficient in supply; and the natural polymer reinforcing agent prepared by combining natural polymer with other raw materials has the advantages that the raw material formula is relatively simple, the preparation steps are simple and easy to operate, and the bonding force and the ring crush value can be effectively improved when the natural polymer reinforcing agent is used for spraying paper.

Description

technical field [0001] The invention relates to a natural polymer reinforcing agent, in particular to a papermaking auxiliary agent for increasing the bonding strength between paper fibers. Background technique [0002] As the total amount of non-renewable resources such as petroleum and coal is decreasing day by day, it is becoming an important development trend to obtain new materials, high calorific value energy, chemical raw materials and medicines from agricultural and forestry waste renewable resources, and natural polymer modification It has become an important branch in the research and utilization of agricultural and forestry waste renewable resources. Although natural polymers are widely distributed in plants, further modifications are required to utilize them because their structural complexity limits their industrial applications. [0003] In addition, affected by the solid waste import ban in the past two years, the fiber raw materials of papermaking enterprise...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/18D21H19/10D21H17/24D21H17/28D21H17/07D21H17/64D21H17/65D21H17/14D21H17/63D21H17/06
CPCD21H21/18D21H19/10D21H17/24D21H17/28D21H17/07D21H17/64D21H17/65D21H17/14D21H17/63D21H17/06
Inventor 施晓旦李燕金霞朝
Owner SHANGHAI CHANGFA NEW MATERIAL CO LTD
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