Paper additive and preparation method thereof

Abstract

The invention discloses a paper additive and a preparation method. During preparation, the paper additive comprises raw materials in parts by weight as follows: 0.6-6 parts of an antibacterial agent, namely, polyhexamethylene guanidine hydrochloride, 1-4 parts of carboxymethyl chitosan, 0.4-2 parts of a condensing agent, 0.1-0.5 parts of an activating agent and 0.05-0.2 parts of a cross-linking agent. The preparation method comprises steps as follows: the carboxymethyl chitosan is dissolved in water, then the pH value is adjusted to range from 5 to 5.5 with hydrochloric acid, the condensing agent and the activating agent are added to the mixture for activation, the antibacterial agent, namely, the polyhexamethylene guanidine hydrochloride, is added for a reaction, an obtained reaction liquid is subjected to suction-filtration, washing, drying and crushing and then evenly mixed with the cross-linking agent, namely, N,N-dimethyl bisacrylamide, an obtained mixture is dissolved in deionized water, and the paper additive is obtained. The paper additive has the advantages that the paper additive is broad in spectrum, high in efficiency, low in toxicity, free of drug resistance, high in antibacterial endurance and the like in the antibacterial aspect and has the advantages that the paper additive is capable of significantly enhancing the paper strength, non-toxic and harmless to human bodies and the like in the enhancing aspect.

Description

technical field [0001] The invention relates to a paper additive and a preparation method thereof, belonging to the field of fine chemicals. Background technique [0002] Human beings have used paper for thousands of years. With the progress of society and the development of science and technology, the use of paper is no longer limited to a single writing, and a large number of fields such as medical care, food packaging, and currency circulation involve the use of paper. . Due to the expansion of the field of use, people have also put forward new requirements for the performance of paper: better strength, excellent antibacterial performance. Improving the strength of paper can significantly increase the service life and scope of use of paper; the excellent antibacterial properties can protect the human body from pathogenic bacteria during use and ensure people's health needs. In order to meet the above requirements, it is necessary to add additives with enhanced and antib...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a paper additive to solve the technical problems of the above-mentioned paper additives, which have relatively single functions and relatively large toxic and side effects on the human body. The paper additive can not only significantly improve the strength of paper, but also has a broad spectrum Non-toxic, low toxicity, no drug resistance, strong antibacterial persistence, and non-toxic and harmless to the human body, etc.

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