Method of improving retention rate of pulp molded fibers
A pulp fiber and pulp molding technology, which is applied in the direction of non-fibrous pulp addition, fiber raw material processing, paper, etc., can solve the problems of high filler loss rate, high papermaking cost, high pollution, etc., achieve good physical and chemical properties, and reduce pulp consumption , Improve the effect of water filtration performance
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[0023] Example 1
[0024] ① Preparation of chemical modification solution: Add chemical additives including 0.02% cationic polyacrylamide, 1% water-repellent agent, and 0.06% oil-repellent agent that account for 0.02% of the pulp fiber mass in the mixing tank, and add pure water to dilute , After dilution, a chemically modified solution with a solid content of chemical additives accounting for 69% of the total solution mass is obtained;
[0025] ② Preparation of pulp fiber: The bone-dry pulp fiber is dispersed and diluted with pure water to form a pulp fiber with a pulp mass concentration of 1%;
[0026] ③ Mixing reaction: Put the chemical modification solution prepared in step ① and the pulp fiber prepared in step ② into the reaction tank and mix, stir evenly and fully react;
[0027] ④ Molding: The fully reacted mixture in step ③ is injected into the material forming zone of the pulp molding device, followed by grouting for 6.3s, suction filtration for 30s, cold pressing for 3s, and...
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[0031] Example 2
[0032] ① Preparation of chemical modification solution: Add chemical additives including 0.04% cationic polyacrylamide, 2% water-repellent agent, and 0.07% oil-repellent agent, which accounts for 0.04% of the absolute dry pulp fiber mass, into the mixing tank, and add pure water to dilute , After dilution, a chemically modified solution with a solid content of chemical additives accounting for 69% of the total solution mass is obtained;
[0033] ② Preparation of pulp fiber: The bone-dry pulp fiber is dispersed and diluted with pure water to form a pulp fiber with a pulp mass concentration of 1%;
[0034] ③ Mixing reaction: Put the chemical modification solution prepared in step ① and the pulp fiber prepared in step ② into the reaction tank and mix, stir evenly and fully react;
[0035] ④ Molding: The fully reacted mixture in step ③ is injected into the material forming zone of the pulp molding device, followed by grouting for 6.3s, suction filtration for 30s, cold p...
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[0039] Example 3
[0040] ① Preparation of chemical modification solution: Add chemical additives including 0.08% cationic polyacrylamide, 4% water repellent, and 0.08% oil repellent, which accounts for 0.08% of the absolute dry pulp fiber mass, and add pure water for dilution. , After dilution, a chemically modified solution with a solid content of chemical additives accounting for 69% of the total solution mass is obtained;
[0041] ② Preparation of pulp fiber: The bone-dry pulp fiber is dispersed and diluted with pure water to form a pulp fiber with a pulp mass concentration of 1%;
[0042] ③ Mixing reaction: Put the chemical modification solution prepared in step ① and the pulp fiber prepared in step ② into the reaction tank and mix, stir evenly and fully react;
[0043] ④ Molding: The fully reacted mixture in step ③ is injected into the material forming zone of the pulp molding device, followed by grouting for 6.3s, suction filtration for 30s, cold pressing for 3s, and finally 19...
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