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A kind of wet strength agent for papermaking and preparation method thereof

A wet strength agent, acrylamide technology, applied in the field of papermaking, can solve the problems of high water retention value, complex production process and high cost, and achieve the effects of good humidity and folding resistance, improved mechanical strength, and good moisturizing effect.

Active Publication Date: 2015-11-25
汕头市金平区飘合纸业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the raw materials of my country's papermaking industry, due to the shortage of wood resources, the currently widely used papermaking raw materials are mainly straw pulp and waste paper pulp. Due to the shortcomings of short fibers, high content of miscellaneous cells, and high water retention value, these raw materials seriously affect the strength of paper and cardboard.
[0003] The existing paper additives have defects such as high cost, high energy consumption, complicated production process, and poor performance in improving folding endurance, ring crush strength, and bursting strength.

Method used

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  • A kind of wet strength agent for papermaking and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 30kg of acrylamide-methyl acrylate copolymer, 20kg of polyethylene glycol with a relative molecular weight of 1000, 15kg of polyvinyl alcohol, 10kg of silicon dioxide with a particle size of 20nm, 5kg of polylysine, 7kg of zirconia whiskers and Add 5 kg of borax into a three-leaf mixer, stir for 1 hour at 60°C at a speed of 600 rpm, adjust the pH to 7, and keep it warm for 0.5 hours to obtain a wet strength agent for papermaking.

[0030] The molar percentage of acrylamide in the acrylamide-methyl acrylate copolymerization is 70%.

[0031] The performance test results of the prepared wet strength agent for papermaking are shown in Table 1.

Embodiment 2

[0033] 45kg of acrylamide-methyl acrylate copolymer, 30kg of polyethylene glycol with a relative molecular mass of 2000, 20kg of polyvinyl alcohol, 8kg of silicon dioxide with a particle diameter of 30nm, 10kg of polylysine, 8kg of zirconia whiskers and Add 5 kg of borax into a three-leaf mixer, stir for 3 hours at 80°C at a speed of 800 rpm, adjust the pH to 7, and keep it warm for 1 hour to obtain a wet strength agent for papermaking.

[0034] The molar percentage of acrylamide in the acrylamide-methyl acrylate copolymerization is 70%.

[0035] The performance test results of the prepared wet strength agent for papermaking are shown in Table 1.

Embodiment 3

[0037] 35kg of acrylamide-methyl acrylate copolymer, 25kg of polyethylene glycol with a relative molecular mass of 600, 25kg of polyvinyl alcohol, 5kg of silicon dioxide with a particle diameter of 30nm, 8kg of polylysine, 5kg of zirconia whiskers and Add 5 kg of borax into a three-blade mixer, stir for 2 hours at 70°C at a speed of 700 rpm, adjust the pH to 7, and keep it warm for 1 hour to obtain a wet strength agent for papermaking.

[0038] The molar percentage of acrylamide in the acrylamide-methyl acrylate copolymerization is 70%.

[0039] The performance test results of the prepared wet strength agent for papermaking are shown in Table 1.

[0040] Table 1

[0041]

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Abstract

The invention discloses a wet strength agent for papermaking and a preparation method thereof, belonging to the technical field of papermaking. The wet strength agent is prepared from the following components in parts by weight: 30-45 parts of acrylamide-methyl acrylate copolymer, 20-30 parts of polyethylene glycol, 15-25 parts of polyvinyl alcohol, 5-10 parts of silicon dioxide, 5-10 parts of polylysine, 5-8 parts of zirconia whiskers and 5 parts of borax. The wet strength agent for papermaking is prepared by mixing the components at 60-80 DEG C. Paper prepared by the wet strength agent is excellent in mechanical property and antibacterial performance.

Description

technical field [0001] The invention belongs to the technical field of papermaking, in particular to a wet strength agent for papermaking and a preparation method thereof. Background technique [0002] Paper consumption accounts for a large part of daily necessities, and the huge paper production of the paper industry also brings correspondingly good market space for the paper chemicals industry. Among the raw materials of my country's papermaking industry, due to the shortage of wood resources, the currently widely used papermaking raw materials are mainly straw pulp and waste paper pulp. Due to the shortcomings of short fibers, high miscellaneous cell content, and high water retention value, these raw materials seriously affect the strength of paper and cardboard. [0003] Existing paper additives have defects such as high cost, high energy consumption, complex production process, and poor improvement in folding endurance, ring crush strength, and burst strength. How to s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/20D21H17/33
Inventor 邓强
Owner 汕头市金平区飘合纸业有限公司