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Tearing strength reinforcing agent for papermaking and preparation method of tearing strength reinforcing agent

A technology of tear resistance and reinforcing agent, which can be used in the addition of reinforcing agent, papermaking, textiles and papermaking, etc., can solve the problems of complex preparation process, and achieve the effect of increased tear resistance, good wet strength and dry strength

Inactive Publication Date: 2016-05-11
DSSUN NEW MATERIAL SHANDONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN103924480A discloses a formula and preparation method of a functional strengthening agent for papermaking. The strengthening agent prepared by this process enhances the strength of paper, but the preparation process is slightly complicated

Method used

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  • Tearing strength reinforcing agent for papermaking and preparation method of tearing strength reinforcing agent
  • Tearing strength reinforcing agent for papermaking and preparation method of tearing strength reinforcing agent
  • Tearing strength reinforcing agent for papermaking and preparation method of tearing strength reinforcing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for preparing a tear strength enhancer includes the following steps: (1) Add 250kg of deionized water into a reactor, turn on the stirring, and add 6kg of guar gum, 3kg of Tianqing gum, and 9kg of cationic starch under stirring. 2kg of acetic acid, stirring at room temperature for 30 minutes; (2) 8kg of polyvinyl alcohol and 5kg of methylene succinic acid at room temperature. Mix the two uniformly; (3) Under stirring, add (2) to (1), heat the system to 75°C, and stir at this temperature for 40 minutes; (4) Add polyamide imine epichlorohydrin ( Add 10 parts of PAE) to (3), stir at 75°C for 30 minutes, and then cool to room temperature to obtain the tear strength enhancer with a solid content of 14.67% and a viscosity of 23 cps.

Embodiment 2

[0040] A method for preparing a tear strength enhancer includes the following steps: (1) Add 240kg of deionized water into a reactor, turn on the stirring, and add 6kg of guar gum, 5kg of Tianqing gum, and 9kg of cationic starch under stirring. Acetic acid 3kg, stirring at room temperature for 30 minutes; (2) 10kg of polyvinyl alcohol and 6kg of methylene succinic acid at room temperature. Mix the two uniformly; (3) Under stirring, add (2) to (1), heat the system to 60°C, and stir at this temperature for 60 minutes; (4) Add the polyamide imine epichlorohydrin ( Add 8 parts of PAE) to (3), stir at 60°C for 60 minutes, and then cool to room temperature to obtain the tear strength enhancer with a solid content of 16.37% and a viscosity of 32 cps.

Embodiment 3

[0042] A method for preparing a tear strength enhancer includes the following steps: (1) Add 230kg of deionized water to the reactor, turn on the stirring, and add 6kg of guar gum, 3kg of Tianqing gum, and 9kg of cationic starch under stirring. Acetic acid 1 kg, stirring at room temperature for 30 minutes; (2) 9 kg of polyvinyl alcohol and 4 kg of methylene succinic acid at room temperature. Mix the two uniformly; (3) Under stirring, add (2) to (1), heat the system to 70°C, and stir at this temperature for 40 minutes; (4) Add polyamide imine epichlorohydrin ( Add 9 parts of PAE) to (3), stir at 70° C. for 50 minutes, and then cool to room temperature to obtain the tear strength enhancer with a solid content of 15.19% and a viscosity of 27 cps.

[0043] The following is a performance comparison of the sample prepared in the example and the comparison sample, the method is as follows:

[0044] Stir the slurry with a mass concentration of 3.0%, softwood pulp: hardwood pulp=4:6, and a...

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Abstract

The invention discloses a tearing strength reinforcing agent for papermaking and a preparation method of the tearing strength reinforcing agent. The method comprises the steps of mixing guar gum, galactomannan gum, cationic starch, polyvinyl alcohol, acetic acid, polyamideimide epichlorohydrin, methylene succinic acid (itaconic acid) and the like, and carrying out compounding, stirring and other steps so as to prepare the reinforcing agent. According to the tearing strength reinforcing agent prepared by adopting the method provided by the invention, the performance is greatly improved, the solid content is 14.5-16.5%, and the viscosity is 20-35 cps; the tearing strength reinforcing agent is added at the wet part, the tearing strength of paper can be greatly improved, and the paper is endowed with good wet strength and dry strength.

Description

Technical field [0001] The invention relates to a strength enhancer, in particular to a tear resistance strength enhancer for papermaking and a preparation method thereof. Background technique [0002] Household paper occupies a large proportion of daily necessities, and the huge papermaking output in the papermaking industry brings correspondingly good market space for the papermaking chemicals industry. Among the raw materials of my country's paper industry, due to the shortage of wood resources, the most widely used papermaking raw materials are straw pulp and waste paper pulp. These raw materials have short fibers, high content of miscellaneous cells, and high water retention value, which seriously affect the strength of paper and cardboard. [0003] Existing papermaking auxiliaries have high costs, high energy consumption, complex production processes, and poor performance in improving paper. How to solve many problems existing in the existing papermaking process is an urgent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/18D21H21/20D21H21/06D21H17/36
Inventor 施晓旦李改霞
Owner DSSUN NEW MATERIAL SHANDONG
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