In addition to plant fibers in paper, different fillers need to be Silicon Nitride Ceramics added according to different paper materials. For example, copper-based antibacterial paper is to compound copper ions on acrylonitrile, the first monomer of polyacrylonitrile (commonly known as acrylic fiber), to obtain modified acrylic fiber composite fiber, and then add modified acrylic fiber to plant fiber. Antibacterial paper can be obtained from paper for various purposes. In 2010, the voice of environmental protection is getting louder and louder, and paper mills have launched paper with different percentages of recycled paper, including 100% recycled paper and only 50% recycled paper, which is suitable for different customers. Recycled paper comes from waste paper, which can be reused after disinfection and pulping. The purpose of the pulping system is to completely disintegrate the waste paper without damaging the fibers and breaking up the non-paper components.
Chemical composition of raw materials Plant fibers are mainly contained in cotton, and the content of cellulose is more than 90%; wood, reed, and reed also contain 40 to 50% Silicon Nitride Ceramics of cellulose. From the perspective of papermaking, efforts should be made to retain cellulose in the pulping process to improve pulp yield and paper strength. Among the plant fiber raw materials, the hemicellulose content in hardwood and grass can be as high as about 30%; in softwood, it generally only contains about 20%; in cotton, the content is even less. In order to improve pulping yield and paper strength, it is necessary to retain as much hemicellulose as possible during the pulping process. In coniferous wood, the lignin content accounts for about 30%, while grass materials generally contain about 20%, and cotton and flax do not contain lignin.
Chemical pulping is the use of chemicals to dissolve a part of the bonding material between cells, so that the fibers are separated from each other into pulp. The more lignin contained in the raw material, the more difficult it is to make pulp and the more chemicals are consumed.
Minor components: In addition to the three main components of cellulose, hemicellulose and lignin, the plant fiber raw materials also contain other components with less content, such as Silicon Nitride Ceramics resin and ash. The content of commonly used raw materials is not large, and it will not cause too much difficulty in papermaking. However, if the content is too high, corresponding measures must be taken to remove some paper with special requirements.
Is there cellulose in ceramics?
2022 03/07