Modification method for enhancing strength of white mud fiber

Abstract

The invention discloses a method for enhancing strength of white mud fiber. The modification method comprises the following steps of (1) weighing a certain amount of polyvinyl alcohol, water, H2O2 and sodium hydroxide, dissolving the weight polyvinyl alcohol into water, heating and stirring till the polyvinyl alcohol is dissolved, thus obtaining a transparent polyvinyl alcohol solution; adding H2O2 into the polyvinyl alcohol solution, then adding sodium hydroxide, and reacting fully to obtain a reactant; (2) weighing a certain amount of Al2(SO4)3, uniformly mixing Al2(SO4)3 with the reactant obtained in the step (1), reacting fully to obtain a mixed solution, then regulating the pH value of the mixed solution to 6-10, thus obtaining an agent for softening and enhancing the white mud fiber; and (3) weighing a certain amount of white mud fiber and water, adding the white mud fiber into water, then adding the organic fiber softening and enhancing agent obtained in step (2), mixing uniformly and steeping, thus obtaining the modified white mud fiber. The modified white mud fiber has large strength and good quality.

Description

technical field [0001] The invention relates to a fiber modification method, in particular to a modification method for enhancing the strength of lime mud fibers. Background technique [0002] The raw material cost of lime mud fiber is extremely low. It is an inorganic fiber made of inorganic minerals as the basic component after remelting and fiberizing a large amount of causticized lime mud produced in the alkali recovery process of pulp and paper mills. The lime mud fiber can not only replace the expensive plant fiber for papermaking, save a lot of plant fiber, reduce the cost of papermaking, reduce the pollution of pulp and paper making, but also turn the solid waste of papermaking lime mud into treasure. [0003] The lime mud fiber cannot be finely fibrillated. In addition, the lime mud fiber is brittle, strong, and short. After beating and dispersing in the pulping process, it is easy to break into small pieces of fibers during transportation, which not only causes sma...

AI Technical Summary

Problems solved by technology

[0003] The lime mud fiber cannot be finely fibrillated. In addition, the lime mud fiber is brittle, strong, and short. After beating and dispersing in the pulping process, it is easy to break into small pieces of fibers during transportation, which not only causes small pieces of fibers to appear in the subsequent application process. Fiber interweaving, blockage of equipment, etc., and excessive use at the same time will greatly reduce the strength of the paper

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