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Cationic rosin size sizing agent and preparation method thereof

A technology of cationic rosin glue and cationic rosin, which is applied in the direction of water-repellent addition, etc., can solve the problems of restricting the use of paper, poor stability of sizing agent, and low ring compressive strength of paper, and achieve the goal of improving ring compressive strength and good stability Effect

Active Publication Date: 2014-06-18
SUZHOU HENGKANG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem to be solved: the stability of conventional sizing agents is poor, and the ring pressure strength of the prepared paper is too low, which limits the use of paper

Method used

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  • Cationic rosin size sizing agent and preparation method thereof

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Effect test

Embodiment 1

[0012] A method for preparing a cationic rosin size sizing agent, the preparation method comprising the following steps: (1) heating the temperature of the stainless steel reactor to 45°C, and adding 6 kg of cationic rosin size and 12 kg of vinyl acetate to the reactor after the temperature is constant , polyacrylonitrile is 2kg, tetradecyl methacrylate is 5kg, carry out sufficient mechanical stirring, stir until mixing evenly; (2) add polyoxyethylene sorbitan tristearate to stainless steel reaction kettle again and be 12kg 1. Deionized water is 240kg. Use a mechanical stirring paddle to fully stir and emulsify until the mixed solution becomes an emulsion. After becoming an emulsion, continue to stir for 30 minutes; (3) Add 4kg of alum to the stainless steel reaction kettle, and stir to fully react. The stirring time 2h; (4) After the reaction is over, cool the prepared sizing agent slowly to room temperature.

Embodiment 2

[0014] A method for preparing a cationic rosin size sizing agent, the preparation method comprising the following steps: (1) heating the temperature of the stainless steel reactor to 45°C, and adding 7 kg of cationic rosin size and 10 kg of vinyl acetate to the reactor after the temperature is constant , polyacrylonitrile is 3kg, tetradecyl methacrylate is 5kg, carry out sufficient mechanical stirring, stir until mixing evenly; (2) add polyoxyethylene sorbitan tristearate to stainless steel reaction kettle again and be 13kg 1. Deionized water is 260kg. Use a mechanical stirring paddle to fully stir and emulsify until the mixed solution becomes an emulsion. After becoming an emulsion, continue to stir for 30 minutes; (3) Add 3kg of alum to the stainless steel reaction kettle, and stir to fully react. The stirring time 2h; (4) After the reaction is over, cool the prepared sizing agent slowly to room temperature.

Embodiment 3

[0016] A preparation method of a cationic rosin size sizing agent, the preparation method comprising the following steps: (1) heating the temperature of the stainless steel reaction kettle to 45°C, and adding 8kg of cationic rosin size and 9kg of vinyl acetate to the reaction kettle after the temperature is constant , polyacrylonitrile is 2kg, tetradecyl methacrylate is 6kg, carry out sufficient mechanical stirring, stir until mixed; 1. Deionized water is 250kg. Use a mechanical stirring paddle to fully stir and emulsify until the mixed solution becomes an emulsion. After becoming an emulsion, continue to stir for 30 minutes; (3) Add 4kg of alum to the stainless steel reactor, and stir to fully react. The stirring time 2h; (4) After the reaction is over, cool the prepared sizing agent slowly to room temperature.

[0017] The sizing agents of Example 1, Example 2, and Example 3 were centrifuged at 3000rpm for 30min, 40min, and 50min, respectively, and then the sizing agents of ...

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Abstract

The invention relates to a cationic rosin size sizing agent and a preparation method thereof. The cationic rosin size sizing agent is prepared from the following components in parts by weight: 6-8 parts of cationic rosin size, 9-12 parts of acetic acid vinyl ester, 2-3 parts of polyacrylonitrile, 5-6 parts of tetradecyl methacrylate, 12-15 parts of polyoxyethylene sorbitan tristearate, 3-4 parts of white alum and 240-260 parts of deionized water. The preparation method of the cationic rosin size sizing agent comprises the following steps: heating, complexing, reacting, and cooling. The prepared cationic rosin size sizing agent has good centrifugal stability and high-temperature stability, and the ring crush compression resistance of paper can be obviously improved.

Description

technical field [0001] The invention relates to a sizing agent and a preparation method thereof, in particular to a sizing agent which has good stability and can significantly improve the ring pressure strength of paper and a preparation method thereof. Background technique [0002] During the paper preparation process, the paper can be endowed with certain physical properties through the sizing process to prevent the infiltration and diffusion of some fluids. After the papermaking process of conventional paper, if there is no sizing treatment, there will be a large number of gaps among the plant fibers in the paper, and these plant fibers themselves have a large number of hydroxyl groups. Due to the existence of these hydroxyl groups, When the paper is in contact with the liquid, the liquid will enter the interior of the paper, affecting the strength of the paper and limiting the effective use of the paper. [0003] Cationic rosin sizing agents have a wide range of applic...

Claims

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Application Information

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IPC IPC(8): D21H21/16
Inventor 邓强
Owner SUZHOU HENGKANG NEW MATERIALS
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