Retention aid for paper making and preparation method thereof

Abstract

The invention discloses a retention aid for paper making and a preparation method thereof. The retention aid for paper making is prepared from the following raw materials in parts by weight: water, cationic polyacrylamide, natural bentonite, aluminum oxide, poly magnesium chloride, chitosan, hydrochloric acid and catalysts. The preparation method of the retention aid for paper making comprises the following concrete steps that materials are taken; the natural bentonite is crushed, washed and sieved to remove impurities; then, the hydrochloric acid is added to take a reaction to obtain bentonite suspension; the cationic polyacrylamide and the water are added into a reaction tank; the catalysts are added; heating is performed; heat insulation reaction is performed; then, the aluminum oxide, the chitosan, the poly magnesium chloride and the bentonite suspension are sequentially added for reaction; then drying is performed to obtain a finished product. The preparation method provided by the invention has the advantages that the preparation method is simple; the production cost is low; the method is suitable for mass production; the water, the cationic polyacrylamide, the natural bentonite and the aluminum oxide achieve mutual synergistic effects; a large number of micro pores with small particle diameters exist in the natural bentonite, so that the fiber and fine material loss cannot be caused, the water filtering passage blockage cannot be caused, and the net part water filtering is smooth.

Description

technical field [0001] The invention relates to the technical field of papermaking chemicals, in particular to a retention aid for papermaking and a preparation method thereof. Background technique [0002] During the papermaking process, there will be a lot of fine fibers in the pulp, the retention rate of the fine fibers is low, and they will be wasted through white water, and the fine limit will accumulate at the bottom of the filter screen, which will affect the water filtration function of the paper industry and affect the paper. Therefore, in the process of papermaking, retention aids will be added to the wire part to increase the retention rate of fine fibers and improve the dehydration performance of the paper industry. [0003] The amount of retention aid is directly related to the production cost of the product, and also affects the gray scale of the paper. The retention aid in the prior art can effectively absorb the loss of fibers and fines during use, but , in ...

AI Technical Summary

Problems solved by technology

[0003] The amount of retention aid is directly related to the production cost of the product, and also affects the gray scale of the paper. The retention aid in the prior art can effectively absorb the loss of fibers and fines during use, but , in the process of long-term use of retention aids in the prior art, it is easy to cause blockage of the water filtration channel, thereby affecting the water filtration of the net part, making it necessary to regularly clean the net part, thereby reducing production efficiency and increasing Production loss