Paper deacidification method adopting two-component water-based deacidification agent
A deacidification method and deacidification technology, which are applied in paper recycling, post-processing of waste paper, recycling technology, etc., can solve the problems of paper wrinkle, handwriting smearing, poor deacidification effect of paper, etc., and are not easy to return acid. , to avoid the effect of paper wrinkles
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Embodiment 1
[0052] Select the first part of "Easy Literacy Textbook", handmade paper, weight 45g / m 2 , the original pH=5.03 of the paper, the aqueous solution deacidifying agent is an aqueous sodium bicarbonate solution, and the suspending deacidifying agent is a nano-calcium carbonate aqueous suspension, and after the paper is subjected to fog moistening and deacidification according to the paper deacidification method in the above-mentioned embodiment, the deacidification is completed. The average pH was 8.7, the paper was wrinkled, and the handwriting was not smeared.
Embodiment 2
[0058] Select "Science and Outlook on Life", machine-made paper, weight 77g / m 2 , the original pH=4.08, the aqueous solution deacidification agent is a mixed aqueous solution of lithium tetraborate and trona, the suspension deacidification agent is a nano-magnesium hydroxide aqueous suspension, and the paper is misted according to the paper deacidification method in the above-mentioned embodiment 1. The average pH was 8.9 after the deacidification was completed, and the paper had no wrinkles and no smearing of handwriting.
Embodiment 4
[0064] Select "Spring and Autumn Zuo's Biography School Book", handmade paper, weight 50g / m 2 , the original pH=5.6, the aqueous solution deacidifying agent is a sodium carbonate aqueous solution, and the suspending deacidifying agent is a nano-magnesium carbonate aqueous suspension, and the average pH after the paper is sprayed and deacidified is carried out according to the paper deacidification method in the above-mentioned embodiment 1. It is 8.4, the paper has no wrinkles, and the handwriting has no smearing.
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