Enhancer for papermaking and preparation method thereof

A technology of reinforcing agent and starch, applied in the field of papermaking, can solve the problems of low molecular weight, low wet strength and high cost of wet strength agent

Active Publication Date: 2014-06-18
SUZHOU HENGKANG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the widely used wet strength agent with better effect is polyamide polyamine epichlorohydrin resin, but this kind of raw material has not been cross-linked, and its molecular weight is low, resulting in low wet strength per unit active ingredient. , resulting in higher costs for using wet strength agents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Combine 20 kg of cationic polyacrylamide, 15 kg of hydroxypropyl methylcellulose, 30 kg of coniferin, 15 kg of polyethylene glycol with a relative molecular weight of 2000, 15 kg of glyceryl stearate, 10 kg of starch, 8 kg of aluminum sulfate and carbonic acid 1kg of sodium hydrogen, mix well at 90℃, keep for 2 hours;

[0027] (2) Add the product in step (1) to a four-blade propeller stirrer, and after stirring for 1 hour at 80 °C, ultrasonic bubbles are removed to obtain a strengthening agent for papermaking.

[0028] The starch is modified by grafting polyacrylamide, and the grafting rate is 25%.

[0029] Table 1 shows the performance test results of the reinforcing agent used in papermaking.

Embodiment 2

[0031] (1) 30kg of cationic polyacrylamide, 20kg of hydroxypropylmethylcellulose, 20kg of coniferyl alcohol, 20kg of polyethylene glycol with a relative molecular weight of 2000, 20kg of glyceryl stearate, 20kg of starch, 8kg of aluminum sulfate and hydrogen carbonate Sodium 2kg, mix well at 100℃, keep for 4 hours;

[0032] (2) The product in step (1) is added to a four-blade propeller stirrer, and after stirring for 2 hours at 100°C, the bubbles are removed ultrasonically to obtain a strengthening agent for papermaking.

[0033] The starch is modified by grafting of polyacrylamide, and the grafting rate is 30%.

[0034] Table 1 shows the performance test results of the reinforcing agent used in papermaking.

Embodiment 3

[0036] (1) 25kg of cationic polyacrylamide, 15kg of hydroxypropyl methylcellulose, 20kg of coniferin, 18g of polyethylene glycol with a relative molecular weight of 2000, 10kg of glyceryl stearate, 15kg of starch, 5kg of aluminum sulfate and hydrogen carbonate Sodium 1kg, mix well at 95℃, keep warm for 3 hours;

[0037] (2) Add the product in step (1) to a four-blade propeller stirrer, and after stirring for 2 hours at 90°C, ultrasonically remove air bubbles to obtain a strengthening agent for papermaking.

[0038] The starch is modified by polyacrylamide grafting, and the grafting rate is 35%.

[0039] Table 1 shows the performance test results of the reinforcing agent used in papermaking.

[0040] Table 1

[0041]

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Abstract

The invention discloses an enhancer for papermaking and a preparation method thereof, and belongs to the field of papermaking. The enhancer for papermaking comprises the following components in parts by weight: 20-30 parts of cationic polyacrylamide, 15-20 parts of hydroxypropyl methyl cellulose, 20-30 parts of coniferyl alcohol, 15-20 parts of polyethylene glycol, 10-20 parts of glyceryl stearate, 10-20 parts of starch, 5-8 parts of aluminum sulfate and 1-2 parts of sodium bicarbonate. The enhancer prepared by the method can be applied to the field of papermaking, paper prepared by the enhancer has good strength and certain waterproofness, and meanwhile, the preparation method disclosed by the invention is simple and can be applied to repeated production.

Description

technical field [0001] The invention belongs to the field of papermaking, in particular to a reinforcing agent for papermaking and a preparation method thereof. Background technique [0002] The dry strength of paper is mainly related to the arrangement of fibers and the bonding between fibers. The main determinants of the strength of paper are determined by factors such as the strength of individual fibers and the number and size of bonds between fibers. On the one hand, the strength of the fiber network can be determined by the accuracy of mechanical beating, but at the same time, it can also increase the bonding strength between fibers by changing the composition of the papermaking slurry. The method often used is to increase the long fiber in the slurry. Ratio, reduce filler content, etc. [0003] At present, the widely used wet strength agent with better effect is polyamide polyamine epichlorohydrin resin, but this kind of raw material has not been cross-linked, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/18D21H17/55D21H17/25D21H17/06D21H17/66
Inventor 邓强
Owner SUZHOU HENGKANG NEW MATERIALS
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