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Surface sizing agent used for corrugated paper as well as preparation method and application thereof

A surface sizing agent and corrugated paper technology, which is applied in paper, papermaking, water repellent addition, etc., can solve the problems of high cost, large amount of sizing agent, failure to significantly improve the ring compressive strength of corrugated paper, etc., and achieve an increase in ring pressure The effect of strength, accelerated curing speed, and reduced Cobb value

Active Publication Date: 2016-12-21
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although most of the existing surface sizing agents on the market can improve the ring crush strength of corrugated paper to a certain extent, they often have the problem of large amount of sizing agent and high cost.
[0008] In the prior art, such as a sizing agent disclosed in Chinese patent CN102660899A, although the curing speed is fast and does not return to moisture, it fails to significantly improve the ring crush strength of corrugated paper

Method used

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  • Surface sizing agent used for corrugated paper as well as preparation method and application thereof

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preparation example Construction

[0042] In a first aspect, a method for preparing a surface sizing agent for corrugated paper is provided, comprising the following steps:

[0043] Mix the surface sizing agent base material for corrugated paper and cationic additives evenly to obtain the surface sizing agent for corrugated paper; wherein, the usage amount of the surface sizing agent base material for corrugated paper is 100 parts by weight, and the cationic The usage amount of additive is 5~50 parts by weight;

[0044] Wherein, the preparation method of the corrugated paper surface sizing agent base material comprises the following steps:

[0045] Add cationic monomer, zirconium salt, (meth)acrylic acid ester monomer, (methyl)styrene, initiator, acetic acid and water into the reaction vessel to carry out free radical polymerization reaction to generate the corrugated paper surface coating Adhesive base;

[0046]Wherein, the preparation method of described cationic additive comprises the steps:

[0047] The ...

Embodiment 1

[0068] (1) Preparation of surface sizing agent base material for corrugated paper:

[0069] A) Add 100g of styrene, 20g of n-butyl acrylate, 20g of N,N-dimethylaminoethyl acrylate, and 0.3g of dibenzoyl peroxide into a container and mix well to obtain a mixed monomer for later use ;

[0070] B) Warm up 161.47g of deionized water to 80°C and set aside;

[0071] C) In a four-neck flask equipped with a condenser, dropping device, stirrer, and thermometer, first add 10% of the mixed monomer obtained in step A), raise the temperature to 80°C, stir for 10 minutes and then add step A dropwise ) for the remaining mixed monomers obtained, the dropwise addition time is 5 hours, and after the dropwise addition, continue to keep warm at 80°C for 1 hour, then add 10g of acetic acid, stir and react at 80°C for 1 hour, then add the hot water in step B), continue Stir the reaction for 1 hour, cool to 25°C, add 1g of zirconium carbonate, stir evenly, pH=2.10. Filter through a 100-mesh filte...

Embodiment 2

[0079] (1) Preparation of surface sizing agent base material for corrugated paper:

[0080] A) Add 100g of methyl styrene, 100g of isooctyl acrylate, 100g of methacrylamidopropyl dimethylamine, and 5g of tert-butyl peroxybenzoate into the container and mix well to obtain a mixed monomer for later use ;

[0081] B) Warm up 1783g of deionized water to 100°C and set aside;

[0082] C) In a four-neck flask equipped with a condenser, dropping device, stirrer, and thermometer, first add 20% of the mixed monomer obtained in step A), raise the temperature to 140°C, stir for 10 minutes and then add step A dropwise ) for the remaining mixed monomer obtained, dropwise for 1 hour, after the dropwise addition, continue to keep warm at 140°C for 0.5 hour, then add 2g of acetic acid, stir and react at 140°C for 20 minutes, then add the hot water in step B), and cool down Stir and react at 95°C for half an hour, then cool to 25°C, add 10g of zirconium carbonate, stir evenly, pH=5.87. Filte...

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Abstract

The invention provides a surface sizing agent used for corrugated paper as well as a preparation method and application thereof. The surface sizing agent used for corrugated paper is prepared by uniformly mixing a base material of the surface sizing agent used for corrugated paper and a cationic additive, wherein a preparation method of the base material of the surface sizing agent used for corrugated paper comprises the following steps of: adding cationic monomers, zircon salts, acrylate (methacrylate) monomers, styrene (methyl styrene), initiators, acetic acid and water to a reaction vessel to carry out free radical polymerization reaction, thus generating the base material of the surface sizing agent used for corrugated paper; a preparation method of the cationic additive comprises the following steps of: adding an alkyl ketene dimer to a water solution of cationic emulsifiers and fully stirring the materials to carry out emulsion dispersion, thus obtaining the cationic additive. The surface sizing agent prepared by the method provided by the invention not only can conduce to substantially reducing the Cobb value and can be rapidly cured and be basically cured immediately after coming off a machine but also can achieve the effect of substantially improving the ring crush strength of the corrugated paper under the condition that the dosage of the sizing agent is invariable.

Description

technical field [0001] The invention belongs to the field of papermaking chemicals production, and in particular relates to a preparation method of a surface sizing agent for corrugated paper, a product prepared by the preparation method, and an application of the product. Background technique [0002] Corrugated paper is a plate made of liner paper and corrugated corrugated paper formed by processing corrugated sticks. It is generally divided into two types: single corrugated board and double corrugated board. According to the size of the corrugated board, it is divided into: A, B, C , E, F five types. The invention and application of corrugated paper has a history of more than 100 years. It has the advantages of low cost, light weight, easy processing, high strength, excellent printing adaptability, and convenient storage and transportation. More than 80% of corrugated paper can be recycled. It can be used as packaging for food or digital products, which is relatively env...

Claims

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Application Information

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IPC IPC(8): D21H21/16D21H17/44
CPCD21H17/44D21H21/16
Inventor 施晓旦尹东华
Owner SHANGHAI DONGSHENG NEW MATERIALS
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