Preparation method of high-strength impervious paper

Abstract

The invention relates to the technical field of papermaking, in particular to a preparation method of high-strength impervious paper. The high-strength impervious paper is prepared from a component Aand a component B, wherein the component A is prepared from diethylene triamine pentaacetic acid (DTPA), sodium dodecyl sulfonate and modified chitosan, and is added after the step of plant fiber rawmaterial pulping and before the step of bleaching; the component B is prepared from plant polygel, pyrethrin, additive plant extracts and modified dialdehyde starch, and is added before the sizing step in the preparation process. The preparation method can effectively reduce the influence of metal ions on pulp bleaching, enables fibers to be better swelled up, and enables the paper to be more easily dried; furthermore, the preparation method can reduce the filament flow phenomenon, improve the strength of the paper and enhance the penetration resistance of paper sheets to hydration liquid, andalso has good bacteriostasis and insect prevention effects; all the added components are non-toxic and harmless as well as safe and environmentally friendly, so that the prepared paper has a higher practical value and a good application prospect.

Description

technical field [0001] The invention relates to the technical field of modern papermaking, in particular to a method for preparing high-strength anti-seepage paper. Background technique [0002] Papermaking is an important invention of the working people in ancient China. There are two forms of mechanism and manual. The mechanism is carried out continuously on the paper machine. The pulp suitable for paper quality is diluted with water to a certain concentration, and is initially dehydrated in the wire part of the paper machine to form a wet paper sheet, which is then dehydrated by pressing, and then dried into paper. [0003] On the one hand, because handmade paper is beaten manually, the fibers in the pulp are well preserved and the fibers of handmade paper can be arranged in various directions evenly; machine-made paper is beaten by machines, and the pulp fibers are broken. The longitudinal and horizontal distribution of fibers is uneven. For example, during wet mechani...

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Problems solved by technology

[0004] On the other hand, the catalytic decomposition of metal ions in the existing papermaking process to hydrogen peroxide and hypochlorous acid bleaching agents affects the bleaching effect, and such as Fe 3+ The ions react with the phenolic groups in the pulp to form a deep-colored compound, which will reduce the whiteness of the pulp and increase the degree of yellowing of the pulp. Scaling of system equipment and pipelines, these metal ions cannot be effectively removed in the existing adding machine, the adsorption effect is not strong, and it is easy to cause secondary pollution

[0005] In addition, the application of sealing and packaging paper in the market is very extensive, but the sealing and packaging paper with anti-moth and moisture-proof functions are currently blank in the market, which greatly limits the choice of materials for many packaging products. The lack of effect will easily cause irreparable losses