Multifunction reinforcing protection glue for paper historical documents
A historical document, multi-functional technology, applied in the field of viscose, can solve the problems of easy film formation, high molecular weight, easy discoloration and degradation, etc., to achieve the effect of improved elasticity and unique protection method
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[0033] Example (1) processing of paper that still has strength but has not yet been chalked:
[0034] In 60g of N-methyl-pyrrolidone solution, add 12g of FEVE fluororesin, 10g of modified chitosan, 14g of HDI crosslinking agent, and 4g of zinc oxide nanopowder in sequence, stir and place on an ultrasonic oscillator Medium treatment for about 20 minutes, after it is completely uniform, spray the glue evenly on the paper surface, or use a special brush to evenly dip it on the paper surface, the solvent evaporates in about 60 minutes, and then let it dry naturally for 24 minutes Hour.
[0035] Example (2) handles paper with a small amount of chalking that has almost no strength:
[0036] Add 14g of FEVE fluororesin, 12g of modified chitosan, 16g of HDI cross-linking agent, and 5g of zinc oxide nanopowder to the solution of 60g of N-methyl-pyrrolidone in turn, stir and place in ultrasonic vibration Treat it in the machine for about 25 minutes. After it is completely uniform, spr...
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