Water absorbent for paper and preparation method thereof

Abstract

The invention discloses a water absorbent for paper and a preparation method thereof. The water absorbent for paper is prepared from the following components in parts by weight: 30-50 parts of sodium polyacrylate, 20-30 parts of sodium alga acid, 30-50 parts of hydroxyethyl cellulose, 20-35 parts of resin copolymers, 5-10 parts of polyacrylamide, 10-15 parts of pentaerythritol, 10-15 parts of glycidol and 0.5-2 parts of sodium carbonate. The prepared water absorbent can be applied to the field of papermaking, and the paper prepared with the water absorbent can have a good synergistic effect with a cationic wet strength agent when having good hygroscopic property and a high water-retention rate. Thus, the dry strength and the wet strength of the paper can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a water-absorbing agent for paper and a preparation method thereof. Background technique [0002] Super absorbent material is a new type of functional polymer material developed in recent years, which can absorb hundreds or even thousands of times its own weight in water, and has a strong water retention capacity and can be used repeatedly. [0003] Both toilet paper and facial tissue need to have good water absorption and good wet strength. Existing additives with good water absorption will reduce the wet strength of paper, because wet strength agents often increase the paper surface Hydrophobicity is used to increase the wet strength of paper. Due to the introduction of hydrophobic groups, the water absorption efficiency of the water-absorbing agent is reduced, and water cannot be effectively absorbed. In order to solve these problems, some researchers solved t...

AI Technical Summary

Problems solved by technology

[0003] Both toilet paper and facial tissue need to have good water absorption and good wet strength. The existing additives with good water absorption will reduce the wet strength of the paper, because the wet strength agent often increases the surface of the paper. Hydrophobicity is used to increase the wet strength of paper. Due to the introduction of hydrophobic groups, the water absorption efficiency of the water-absorbing agent is reduced, and it cannot effectively absorb water.

In order to solve these problems, some researchers solved the interaction between wet strength agent and water absorbing agent by adding surfactants, but these agents will reduce the strength of paper. Therefore, it is urgent to have good water absorption without the influence of wet strength agent water absorbing agent with reduced efficacy