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Bobbin paper dry strength agent and preparation method thereof

A technology of dry strength agent and bobbin paper, which is applied in the field of papermaking, can solve problems such as difficult to achieve elasticity, toughness and mechanical strength, and achieve the effects of reducing resource loss, good elasticity and toughness requirements, and improving ring compressive strength

Inactive Publication Date: 2020-04-03
JIANGMEN GAOLIYI TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited source of raw wood pulp fiber, bobbin paper is mainly produced from waste paper recycled fiber and raw pulp fiber. It is difficult to achieve good elasticity, toughness and high mechanical strength without adding reinforcing additives.

Method used

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  • Bobbin paper dry strength agent and preparation method thereof
  • Bobbin paper dry strength agent and preparation method thereof
  • Bobbin paper dry strength agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A dry strength agent for bobbin paper, prepared through the following steps:

[0031] (1) 1.5 g of cationic starch with a degree of substitution of 0.07 was gelatinized at 50°C with 10 g of pure water and then kept at this temperature for 1 hour to obtain a cationic starch liquid for subsequent use;

[0032] (2) Put 0.38g of maleic acid, 4.0g of acryloyloxyethyltrimethylammonium chloride, 13g of acrylamide, and 71g of water into the reactor, start stirring to mix the materials evenly, then add molecular weight inhibitor 0.07 g and 0.007g of cross-linking agent, then feed nitrogen, and simultaneously raise the temperature of the material to 65°C, then add 0.01g of initiator to initiate polymerization;

[0033] (3) After the self-heating of the polymerization reaction stops (if the temperature exceeds 93°C during the self-heating process, it must be cooled with circulating water to keep the temperature not exceeding this temperature), add the cationic starch solution desc...

Embodiment 2

[0035] A dry strength agent for bobbin paper, prepared through the following steps:

[0036] (1) 3.0 g of cationic starch with a degree of substitution of 0.15 was gelatinized with 20 g of pure water at 50° C. and then kept at this temperature for 1 hour to obtain a cationic starch liquid for subsequent use;

[0037] (2) Put 0.45g of maleic acid, 3.2g of acryloyloxyethyltrimethylammonium chloride, 9.1g of acrylamide, and 64.2g of water into the reactor, start stirring to mix the materials evenly, then add molecular weight inhibitor 0.045g of cross-linking agent and 0.009g of cross-linking agent, then pass nitrogen gas, and simultaneously raise the temperature of the material to 65°C, then add 0.01g of initiator to initiate polymerization;

[0038] (3) After the self-heating of the polymerization reaction stops (if the temperature exceeds 93°C during the self-heating process, it must be cooled with circulating water to keep the temperature not exceeding this temperature), add t...

Embodiment 3

[0040] A dry strength agent for bobbin paper, prepared through the following steps:

[0041] (1) 4.5 g of cationic starch with a degree of substitution of 0.3 was gelatinized with 20 g of pure water at 50° C. and then kept at this temperature for 1 hour to obtain a cationic starch liquid for subsequent use;

[0042] (2) Put 0.51g of maleic acid, 3.1g of acryloyloxyethyltrimethylammonium chloride, 12.1g of acrylamide, and 59.7g of water into the reactor, start stirring to mix the materials evenly, then add molecular weight inhibitor 0.061g of cross-linking agent and 0.008g of cross-linking agent, then nitrogen gas was introduced, and at the same time, the temperature of the material was raised to 65°C, and then 0.012g of initiator was added to initiate polymerization;

[0043] (3) After the self-heating of the polymerization reaction stops (if the temperature exceeds 93°C during the self-heating process, it must be cooled with circulating water to keep the temperature not exceedi...

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Abstract

The invention provides a bobbin paper dry strength agent. The bobbin paper dry strength agent comprises 0.5 to 20 parts of cationic starch, 0.2 to 10 parts of a cationic monomer with unsaturated double bonds, 0.05 to 5 parts of an anionic monomer with unsaturated double bonds, 1 to 20 parts of acrylamide, 0.001 to 1 part of a molecular weight inhibitor, 0 to 5 parts of a cross-linking agent, 0.001to 5 parts of an initiator, 0.001 to 5 parts of a terminating agent and 50 to 120 parts of water. The bobbin paper dry strength agent can effectively increase the bonding area and bonding strength between fibers in papermaking pulp, more hydrogen bonds are formed, the mechanical strength of the bobbin paper is remarkably improved, and the requirements for good elasticity and toughness are met. Meanwhile, the bobbin paper dry strength agent can assist in increasing the retention rate of fine fibers and filler and assist in increasing the dehydration speed, so that the resource loss in papermaking production is reduced, and the treatment pressure of papermaking wastewater is reduced. After the bobbin paper dry strength agent is applied to paper, the folding resistance index and the burstingresistance index are improved, and the ring crush compression strength is obviously improved.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a bobbin paper dry strength agent and a preparation method thereof. Background technique [0002] Tube paper is mainly used in the production of cores and pipes, such as industrial tubes, mulch tubes, fireworks tubes, textile tubes, spiral tubes, pagoda tubes, parallel tubes, various paper corners, cartons, honeycomb cardboard, etc., is a kind of Industrial paper, as well as paper bobbins and cone paper tubes for the textile industry. The basis weight of bobbin cardboard is usually 85~510g / m 2 . The paper of bobbin paper is tough and wear-resistant, the paper surface is smooth and even, has good water resistance, and can resist edge depression and withstand lathe processing when used. The main technical indicators of bobbin paper and other papers are different in four highs, which are high quantitative, high thickness, high sizing degree and high water resistance. When us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/56D21H21/18
CPCC08F251/00D21H21/18C08F220/56
Inventor 张敏盛张益盛潘玉丽
Owner JIANGMEN GAOLIYI TECH IND
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