Multifunction reinforcing protection glue for paper historical documents
A historical document and multi-functional technology, applied in the field of viscose, can solve the problems of easy film formation, high molecular weight, easy discoloration and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., and achieve the effect of improving 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 hydroxy chitosan, 14g of HDI crosslinking agent, 4g of zinc oxide nanopowder in turn, stir and place in an ultrasonic oscillator Treat 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 air for 24 hours .
[0035] Example (2) handles paper with a small amount of chalking that has almost no strength:
[0036] In the solution of 60g of N-methyl-pyrrolidone, add 14g of FEVE fluororesin, 12g of hydroxy chitosan, 16g of HDI cross-linking agent, 5g of zinc oxide nanopowder in turn, and put it on the ultrasonic oscillator after stirring Medium treatment for about 25 minutes, after it is completely uniform, spray the glue on the special net,...
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