At present, papermaking mainly uses wood as raw material. In order to decompose wood blocks into pulp and then drift and concentrate, some acidic agents must be added. This acidic agent remains on the paper, which plays the role of "burning books" under the action of the external environment. Although some acid-free agents have been produced at present, they are not ideal in economy because of their low output and high price.
The emergence of electronic storage technology and the innovation of chemical technology provide people with a realistic way to solve this problem. The Library of Congress has developed an "anti-acidification" process. After drying books in a vacuum room, the room is filled with evaporated ethyl zinc. After 4 to 5 days of treatment, the shelf life of books can be extended from 100 to 500 to 600 years.
The development of electronic storage technology provides a new way to preserve the contents of books. Digital laser memory can store the equivalent of 20,000 pages of text. This is far more convenient to use than the micro-film economy. Once the reader needs it, he can read with the help of a computer. I believe that with the development of technological revolution, we will find more reasonable new ways to protect books.