英文摘要 |
The application of polyparaxylylenes coating technique to the paper strengthening is a newly developed one for books and archives protection. The principle of paper strengthening is that when the monomers of paraxylylenes polymerize into a clear film on paper fibers, during the deposition process the paraxylylenes will form polymer bridges at the numerous fiber-to-fiber contact points, resulting in a significant overall strengthening of the papers. It would increase the durability of books and archives remarkably. The experimental results indicate that the folding strength and zero span strength of papers increase remarkably after being treated with the coating of polyparaxylylenes. The color change induced by Parylene C is less than that of Parylene N, and both changes are not significant. The humidity resistance of coated papers increases after using parylene coating, and the use of Parylene C is superior to that of Parylene N. The conformal coating thickness of 5μm-polyparaxylylenes generates anti -fungal characteristics to fungi such as: Aspergillus niger, Aspergillus flavus, Penicillium sp., Rhizopus sp. and Trichoderma viride, and the fungal resistance of Parylene C coated paper is better than that of Parylene N coated paper. |