Preparation method of waterproof high-strength corrugated paper

Abstract

The invention discloses a preparation method of waterproof high-strength corrugated paper. Very high waterproof performance and strength are realized by adding specially-made calcium carbonate, superfine glass fibers and ramie staple fibers in the preparation process of the corrugated paper. A waterproof flame-retardant additive is added into the specially-made calcium carbonate, the additive comprises matrix asphalt, expanded vermiculite, aluminum hydroxide and graphene oxide, the expanded vermiculite has a layered structure and can form a barrier layer for flame-retardant protection, and thegraphene oxide is added to form a reticular structure, so that the strength of the paper can be improved, aluminum hydroxide can be distributed more uniformly, and the flame retardant effect is better. In order to prevent the expanded vermiculite from absorbing too much water under a high-humidity condition, the matrix asphalt is added in the preparation process of the waterproof flame-retardantadditive, and the expanded vermiculite can be filled with the molten matrix asphalt, so that the flame-retardant effect is further improved, the water absorption amount of the expanded vermiculite canbe effectively reduced, and the waterproof effect is achieved.

Description

technical field [0001] The invention relates to the technical field of high-strength corrugated paper, in particular to a preparation method of waterproof high-strength corrugated paper. Background technique [0002] Corrugated cardboard began at the end of the 18th century, and its application increased significantly in the early 19th century because of its light weight, low price, wide range of uses, easy production, and the ability to be recycled or even reused. By the beginning of the 20th century, it had been fully popularized, promoted and applied for the production of packaging for various commodities. Since the packaging container made of corrugated cardboard has its unique properties and advantages for beautifying and protecting the goods inside, it has achieved great success in the competition with various packaging materials. It has become one of the main materials for making packaging containers that has been used for a long time and is developing rapidly. [0...

AI Technical Summary

Problems solved by technology

[0004] Chinese invention patent CN 107974860A discloses a method for preparing flame-retardant high-strength corrugated paper. Special calcium carbonate is added to the high-strength corrugated paper. Vermiculite powder and graphene oxide are added to the calcium carbonate. At the high temperature of combustion, the calcium carbonate decomposes into Carbon dioxide and calcium oxide, carbon dioxide is filled in the expanded vermiculite to form a barrier layer, and the flame retardant effect is better; but the vermiculite powder has a layered structure, which is very absorbent under high humidity conditions. The corrugated paper has passed the high temperature and high humidity test. Finally, the density increased by more than 35%. Although the strength is still relatively high, the durability is relatively poor. Generally, damage will occur to varying degrees after 3 months of use.

Images