Raw paper of abrasive paper and preparation method thereof

Abstract

The invention discloses a raw paper of an abrasive paper and a preparation method thereof. The preparation method comprises the following steps of selecting 60 to 80 parts of coniferous wood pulp, 10to 25 parts of chemical fiber and / or 5 to 10 parts of bamboo charcoal fiber, fully cutting, grinding and pulping; adding 1 to 10% of wet strength agent, 1 to 5 parts of chitosan, 1 to 5 parts of modified thermoplastic resin, and 1 to 4 parts of waterproof agent, and diluting by water until the mass concentration of the material of the raw pulp is 10% to 20%; adjusting the pH (potential of hydrogen) value to 5.5 to 8.5, performing DDS (displacement digester system) displacement digestion, washing and screening, removing lignin by oxygen and alkaline, bleaching by hydrogen peroxide, and fully pulping and crushing, so as to obtain sulfate slightly-bleached wood pulp; performing inclined net forming, dewatering, large-cylinder pre-baking, two-cylinder drying and calendering, group-cylinder drying, coiling, recoiling and splitting on the material of the raw pulp, so as to obtain the pretreated raw paper; after the inclined net forming procedure is performed, impregnating the formed paper, and applying latex; coating anti-solvent latex to the front side and back side of the pretreated raw paper, drying, coiling, recoiling and splitting, so as to obtain the raw paper of the abrasive paper. The raw paper has the advantages that the water-resistant property is good, the solvent-resistant property is good, the high temperature-resistant property is realized, the abrasion-resistant property is good, and the tension property is good.

Description

technical field [0001] The invention belongs to the technical field of pulping and papermaking, in particular to a sandpaper base paper and a preparation method thereof. Background technique [0002] Sandpaper is an abrasive tool made by adhering abrasive materials on a soft substrate with adhesives. The main raw materials of sandpaper are base paper, abrasive materials, and adhesives. In order to improve the grinding strength of the sandpaper, the base paper is not only required to be tough, but also wear-resistant and fold-resistant, and has good water resistance. [0003] Water-resistant sandpaper is mainly made of kraft paper after water-resistant impregnation treatment as water-resistant sandpaper base paper. At present, the production of water-resistant sandpaper continues to use the traditional alkyd varnish, alkyd enamel, amino resin paint and alkyd thinner as binders, and is manufactured by a suspended continuous production line. However, the water resistance and ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is: aiming at the disadvantages of traditional sandpaper base paper, such as poor waterproof performance and tensile performance, poor toughness and heat resistance, it provides a kind of sandpaper with good water resistance, solvent resistance, high temperature resistance and good wear resistance. , sandpaper base paper with good tensile properties and preparation method thereof