Transparent paper and production method thereof
A production method and technology of transparent paper, applied in papermaking, papermaking, textile and papermaking, etc., can solve the problems of low paper strength and large solvent pollution, and achieve the effects of good barrier properties, good uniformity and high transparency
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Embodiment 1
[0025] (1) Add a pretreatment solution to bleached hardwood pulp (1000g, calculated as dry pulp) with a beating degree of 13°SR. The pretreatment solution contains 0 parts of fatty alcohol polyoxyethylene ether, 3-chloro-2-hydroxy 5.6 parts of propyltrimethylammonium chloride, 94.4 parts of isopropanol, the mass ratio of dry pulp to 3-chloro-2-hydroxypropyltrimethylammonium chloride is 1:0.8, at 1500r / min Stir at high speed for 5 minutes to obtain a pretreatment slurry with a concentration of 6.6%; add 20% sodium hydroxide / isopropanol solution with a mass concentration of 20% to the pretreatment slurry to control the concentration of 3-chloro-2-hydroxypropyl trimethyl chloride The mass ratio of ammonium chloride to sodium hydroxide is 1:1.2, heated to 80°C, stirred for 30min at a stirring speed of 1500r / min to obtain a post-reaction slurry with a concentration of 5%; filter and wash the post-reaction slurry for 3 times.
[0026] (2) Quantitatively 130g / m 2 Weigh the pulp afte...
Embodiment 2
[0029] (1) Add pretreatment solution to bleached cotton pulp (1000g, calculated as dry pulp) with a beating degree of 33°SR. The pretreatment solution contains 0.4 parts of alkyl glycosides, sodium 3-chloro-2-hydroxypropanesulfonate 7.0 parts, 93.6 parts of absolute ethanol, the mass ratio of dry pulp to sodium 3-chloro-2-hydroxypropanesulfonate is 1:0.5, and stirred at a high speed of 2000r / min for 8min to obtain a pretreatment with a concentration of 12%. Slurry; add ethanolamine / absolute ethanol solution with a mass concentration of 30% to the pretreatment slurry, control the mass ratio of 3-chloro-2-hydroxypropanesulfonate to ethanolamine to be 1:1, heat to 60°C, and stir 60min, the stirring speed is 2000r / min, and the concentration of 10% of the reaction slurry is obtained; the reaction slurry is filtered and washed once.
[0030] (2) Quantitatively 280g / m 2 Weigh the pulp after washing in (1) and use a deflagger to decompose for 3 minutes at 8000 rpm, pour it into a pap...
Embodiment 3
[0033] (1) Add pretreatment solution to bleached softwood pulp (1000g, calculated as dry pulp) with a beating degree of 60°SR. The pretreatment solution contains 0.8 parts of alkylsulfonate, 7.5 parts of monochloroacetic acid, and 91.7 parts of methanol Parts, the mass ratio of dry pulp to monochloroacetic acid is 1:0.3, high-speed stirring at 3000r / min for 10min to obtain a pretreated slurry with a concentration of 20%; add 14.4% of the mass concentration to the pretreated slurry Sodium ethylate / methanol solution, control the mass ratio of monochloroacetic acid and sodium ethylate to 1:0.8, heat to 40°C, stir for 120min, and the stirring speed is 3000r / min, to obtain a post-reaction slurry with a concentration of 15%; The slurry was filtered and washed twice.
[0034] (2) Quantitatively 30g / m 2 Weigh the pulp after washing in (1) and use a deflaker to decompose for 4 minutes at 9000 rpm, pour it into a paper sheet machine for filtration and shape, and transfer the obtained w...
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