A kind of strengthening agent for papermaking and preparation method thereof

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

Active Publication Date: 2016-04-06
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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  • A kind of strengthening agent for papermaking and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 20kg of cationic polyacrylamide, 15kg of hydroxypropyl methylcellulose, 30kg of coniferyl alcohol, 15kg of polyethylene glycol with a relative molecular weight of 2000, 15kg of glyceryl stearate, 10kg of starch, 8kg of aluminum sulfate and bicarbonate Sodium 1kg, mix well at 90°C, keep warm for 2 hours;

[0027] (2) Add the product in step (1) into a four-blade propulsion mixer, stir at 80°C for 1 hour, and remove bubbles by ultrasonic to obtain a strengthening agent for papermaking.

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

[0029] The performance test results of the prepared reinforcing agent for papermaking are shown in Table 1.

Embodiment 2

[0031] (1) Add 30kg of cationic polyacrylamide, 20kg of hydroxypropyl methylcellulose, 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 bicarbonate Sodium 2kg, mix well at 100°C, keep warm for 4 hours;

[0032] (2) Add the product in step (1) to a four-blade propulsion stirrer, stir at 100°C for 2 hours, and remove bubbles by ultrasonic to obtain a reinforcing agent for papermaking.

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

[0034] The performance test results of the prepared reinforcing agent for papermaking are shown in Table 1.

Embodiment 3

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

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

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

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

[0040] Table 1

[0041]

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Abstract

The invention discloses a reinforcing agent for papermaking and a preparation method thereof, which belongs to the field of papermaking. The strengthening agent for papermaking is made of the following components by weight: 20-30 parts of cationic polyacrylamide, 15-20 parts of hydroxypropyl methylcellulose, 20-30 parts of coniferyl alcohol, polyethylene glycol 15-20 parts, 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 strengthening agent prepared by the method can be used in the field of papermaking, and the paper prepared by adding the strengthening agent has good strength and certain water resistance, and meanwhile, the preparation method of the invention is simple and can be produced repeatedly.

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 Patents(China)
IPC IPC(8): D21H21/18D21H17/55D21H17/25D21H17/06D21H17/66
Inventor 邓强
Owner SUZHOU HENGKANG NEW MATERIALS
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