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Surface glue reinforcing agent and preparation method thereof

A technology of strengthening agent and surface glue, applied in the field of surface glue strengthening agent and its preparation, can solve the problems of insufficient paper surface strength, increase of cooking equipment, loss of hair and powder, etc., so as to improve the effect, reduce the production cost, and increase the ash content. Effect

Inactive Publication Date: 2017-01-04
SHANDONG YUANGEN CHEM TECH RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polyvinyl alcohol has good film-forming properties and high film-forming strength, but it is expensive and easy to penetrate
CMC has high viscosity, it is not easy to prepare a higher concentration of glue, and more cooking equipment is required
After the paper is treated with polyacrylamide and polyacrylate sizing agents, the surface strength of the paper is not enough, and the phenomenon of lint and powder falling is easy to occur during the printing process

Method used

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  • Surface glue reinforcing agent and preparation method thereof
  • Surface glue reinforcing agent and preparation method thereof
  • Surface glue reinforcing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 15 parts polyvinyl alcohol

[0033] 15 parts of N-methylolacrylamide

[0034] 18 parts of hydrophilic monomer

[0035] Hydrophobic monomer 18 parts

[0036] Cationic monomer 25 parts

[0037] Initiator 3 parts

[0038] 3 parts of cross-linking agent

[0039] 3 parts emulsifier

[0040] 500 parts of water;

[0041] The preparation method specifically comprises the following steps:

[0042] a. Mix solid polyvinyl alcohol with water, stir at room temperature for 0.5h, raise the temperature to 95°C, stir and dissolve, keep warm until the polyvinyl alcohol is completely dissolved, and obtain polyvinyl alcohol solution A (solid content is controlled at 10%);

[0043] B, initiator is mixed with 8% aqueous solution;

[0044] c. Mix the emulsifier, water, and hydrophobic monomer, stir at 40°C, and raise the temperature to 80°C to obtain pre-emulsion B;

[0045] d. Add water, N-methylolacrylamide, and hydrophilic monomer into the reaction kettle, stir and mix evenly, rai...

Embodiment 2

[0049] 18 parts polyvinyl alcohol

[0050] 16 parts of N-methylolacrylamide

[0051] 15 parts of hydrophilic monomer

[0052] Hydrophobic monomer 20 parts

[0053] Cationic monomer 18 parts

[0054] Initiator 4 parts

[0055] 4 parts of cross-linking agent

[0056] Emulsifier 5 parts

[0057] 500 parts of water;

[0058] The preparation method specifically comprises the following steps:

[0059] a. Mix solid polyvinyl alcohol with water, stir at room temperature for 0.5h, raise the temperature to 96°C, stir and dissolve, keep warm until the polyvinyl alcohol is completely dissolved, and obtain polyvinyl alcohol solution A (solid content is controlled at 9%);

[0060] B, initiator is mixed with 7% aqueous solution;

[0061] c. Mix the emulsifier, water, and hydrophobic monomer, stir at 45°C, and raise the temperature to 80°C to obtain pre-emulsion B;

[0062] d. Add water, N-methylolacrylamide, and hydrophilic monomer into the reaction kettle, stir and mix evenly, rais...

Embodiment 3

[0066] 20 parts polyvinyl alcohol

[0067] 12 parts of N-methylolacrylamide

[0068] 18 parts of hydrophilic monomer

[0069] Hydrophobic monomer 15 parts

[0070] Cationic monomer 22 parts

[0071] Initiator 5 parts

[0072] Cross-linking agent 5 parts

[0073] 3 parts emulsifier

[0074] 500 parts of water;

[0075] The preparation method specifically comprises the following steps:

[0076] a. Mix solid polyvinyl alcohol with water, stir at room temperature for 0.5h, raise the temperature to 94°C, stir and dissolve, keep warm until the polyvinyl alcohol is completely dissolved, and obtain polyvinyl alcohol solution A (solid content is controlled at 11%);

[0077] B, initiator is mixed with 9% aqueous solution;

[0078] c. Mix emulsifier, water, and hydrophobic monomer, stir at 50°C, and heat up to 85°C to obtain pre-emulsion B;

[0079] d. Add water, N-methylolacrylamide, and hydrophilic monomer into the reaction kettle, stir and mix evenly, raise the temperature to 6...

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Abstract

The invention belongs to the field of papermaking additives, and particularly relates to a surface glue reinforcing agent and a preparation method thereof. The surface glue reinforcing agent is prepared from polyvinyl alcohol, N-methylol acrylamide, hydrophilic monomers, hydrophobic monomers, cationic monomers, an initiating agent, a crosslinking agent, an emulsifying agent and water. The molecules of the surface glue reinforcing agent contain a large quantity of functional groups such as hydroxyl and carboxyl, the surface glue reinforcing agent can strongly adhere to fibers, and the bonding strength among fibers can be improved; meanwhile, the surface glue reinforcing agent has the function of forming a net structure through self-crosslinking, the acting force between the reinforcing agent and other reinforcing agents and between the reinforcing agent and fibers and filler is increased, and the acting effect of the reinforcing agent is improved; due to the good film forming property of the surface glue reinforcing agent, migration of surface glue to the interior of paper can be reduced, the surface strength of paper can be improved, and the linting and dusting phenomenon can be avoided. By means of the preparation method, the defect that the strength of body paper is reduced in a body paper highly-filling technology or a method of adopting a staple fiber raw material (like secondary fibers) in a high proportion can be overcome, the ash content of paper can be improved, and cost can be reduced.

Description

technical field [0001] The invention belongs to the field of papermaking auxiliary agents, in particular to a surface glue strengthening agent and a preparation method thereof. Background technique [0002] Paper surface sizing agent is a kind of chemical additives coated on the surface of paper to enhance the physical properties of paper. At present, paper surface sizing agents mainly include starch, polyvinyl alcohol, carboxymethyl cellulose (CMC), polyacrylamide, polyacrylate, etc. In order to increase the use effect in production, sometimes two or two The above rubber materials are used in combination. [0003] Polyvinyl alcohol has good film-forming properties and high film-forming strength, but it is expensive and easy to penetrate. CMC has a high viscosity, it is not easy to prepare a higher concentration of glue, and more cooking equipment is required. After the paper is treated with polyacrylamide and polyacrylate sizing agents, the surface strength of the paper ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/16C08F220/34C08F220/06C08F222/02C08F220/58C08F212/08C08F220/18C08F220/28
CPCC08F212/08C08F220/18C08F220/28C08F220/34D21H21/16C08F220/06C08F222/02C08F220/58C08F220/1804C08F220/281
Inventor 仲亚杰张聪荆蒙蒙王士平
Owner SHANDONG YUANGEN CHEM TECH RES & DEV CO LTD
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