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A kind of preparation method of paper stiffness agent

A stiffness agent and paper technology, applied in paper, papermaking, textiles and papermaking, etc., can solve the problems of poor strength and stiffness improvement effect, single function, and insignificant improvement effect of paper water resistance, achieving stiffness and stiffness. The effect of improving fastness, improving waterproof performance, improving stiffness and fastness

Active Publication Date: 2020-05-29
WUHAN CHENMING HANYANG PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is: aiming at improving the shortcomings of traditional paper stiffness agents, such as poor effect on paper strength and stiffness improvement, single function, and insignificant effect on paper water resistance improvement, a kind of paper stiffness agent is provided. Preparation

Method used

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  • A kind of preparation method of paper stiffness agent

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example 1

[0021] The chitosan is mixed with the acetic acid solution with a mass fraction of 4% in a mass ratio of 2:4. After stirring and mixing for 30 minutes at a temperature of 65°C and a rotating speed of 350r / min, the chitosan acetic acid solution is obtained. Ether and emulsifier are mixed at a mass ratio of 8:1. Under the conditions of a temperature of 65°C and a rotating speed of 350r / min, the mixture is stirred and mixed for 40 minutes to obtain a petroleum ether mixture. The petroleum ether mixture and acrylamide are in a mass ratio of 4:1 Mix it in the reaction kettle, add 0.45 times the mass of petroleum ether mixture to acrylic acid and 0.8 times the mass of petroleum ether mixture to the reaction kettle, stir and mix for 4 hours at a temperature of 55°C and a rotation speed of 450r / min to obtain Pretreatment mixture, mix the pretreatment mixture and the initiator at a mass ratio of 10:1 to obtain the pretreatment initiator mixture, adjust the pH of the pretreatment initiato...

example 2

[0023] The chitosan is mixed with the acetic acid solution with a mass fraction of 4% at a mass ratio of 2:4. After stirring and mixing for 30 minutes at a temperature of 65°C and a rotating speed of 350r / min, the chitosan acetic acid solution is obtained. Ether and emulsifier are mixed at a mass ratio of 8:1. Under the conditions of a temperature of 65°C and a rotating speed of 350r / min, the mixture is stirred and mixed for 40 minutes to obtain a petroleum ether mixture. The petroleum ether mixture and acrylamide are in a mass ratio of 4:1 Mix it in the reaction kettle, add 0.45 times the mass of petroleum ether mixture to acrylic acid and 0.8 times the mass of petroleum ether mixture to the reaction kettle, stir and mix for 4 hours at a temperature of 55°C and a rotation speed of 450r / min to obtain Pretreatment mixture, mix the pretreatment mixture and the initiator at a mass ratio of 10:1 to obtain the pretreatment initiator mixture, adjust the pH of the pretreatment initiato...

example 3

[0025] The chitosan is mixed with the acetic acid solution with a mass fraction of 4% at a mass ratio of 2:4. After stirring and mixing for 30 minutes at a temperature of 65°C and a rotating speed of 350r / min, the chitosan acetic acid solution is obtained. Ether and emulsifier are mixed at a mass ratio of 8:1. Under the conditions of a temperature of 65°C and a rotating speed of 350r / min, the mixture is stirred and mixed for 40 minutes to obtain a petroleum ether mixture. The petroleum ether mixture and acrylamide are in a mass ratio of 4:1 Mix it in the reaction kettle, add 0.45 times the mass of petroleum ether mixture to acrylic acid and 0.8 times the mass of petroleum ether mixture to the reaction kettle, stir and mix for 4 hours at a temperature of 55°C and a rotation speed of 450r / min to obtain Pretreatment mixture, mix the pretreatment mixture and the initiator at a mass ratio of 10:1 to obtain the pretreatment initiator mixture, adjust the pH of the pretreatment initiato...

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Abstract

The invention discloses a method for preparing a paper stiffness agent and belongs to the technical field of papermaking additives. The method comprises the following steps: taking chitosan as a raw material, and preparing an anionic polyacrylamide mixture into an anionic polyacrylamide-chitosan mixed solution; taking a linseed oil mixture as an inner material, and taking a gelatin solution as a clad material to prepare microcapsules; mixing the anionic polyacrylamide-chitosan mixed solution and the microcapsules into a stirrer according to a mass ratio of 5-2 to 6-2, adding a dispersing agentin an amount of 0.2-0.3 time that of the mass of the anionic polyacrylamide-chitosan mixed solution into the stirrer; stirring and mixing under the conditions of the temperature of 20-35 DEG C and the rotation speed of 250-350 revolutions per minute, so as to obtain the paper stiffness agent. The paper stiffness agent prepared in the technical scheme of the invention has the characteristics of improved stiffness, fastness and water resistance.

Description

Technical field [0001] The invention discloses a preparation method of a paper stiffness agent, which belongs to the technical field of papermaking aids. Background technique [0002] In recent years, the demand for packaging paper and paperboard has greatly increased. The gap of high-end packaging paperboard is large, which requires a large amount of imports, and is developing in the direction of low basis weight and high strength. At the same time, the fiber raw material is mainly waste paper, but due to the repeated use of waste paper, the fiber properties are decayed, the mechanical strength is low, and the paper strength is poor. Only by physical methods and process control, the stiffness of packaging paper and cardboard is very high. It is difficult to improve, which has become a major technical obstacle to the development of paper and cardboard. At the same time, with the popularization of high-speed multi-color printing presses, there are also higher requirements for the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/43D21H17/24D21H17/28D21H17/02D21H21/14C08F220/56C08F220/06C08F8/28
CPCC08F8/28C08F220/56D21H17/02D21H17/24D21H17/28D21H17/43D21H21/14C08F220/06
Inventor 唐林元肖曦黄浩
Owner WUHAN CHENMING HANYANG PAPER