HIGH-TRANSPARENCY CELLULOSE ACETATE FILM CAPABLE OF BEING PROCESSED AT LOW TEMPERATURE AND PREPARATION METHOD THEREFOR

• Main Authors: ZHANG, Hongmei, GUO, Cuicui, WANG, Jihu, MIAO, Yamei, HOU, Huimin, YUAN, Chunping, WANG, Song
• Format: Patent
• Language: Chinese; English; French
• Published: 18.04.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

A high-transparency cellulose acetate film capable of being processed at a low temperature and a preparation method therefor. The high-transparency cellulose acetate film comprises the following raw materials in percentages by weight: 75-85 parts of modified cellulose acetate, 12-20 parts of a plasticizer, and 2-6 parts of a transparent agent, wherein the plasticizer and the transparent agent are both composite additives. The preparation process comprises the following steps: blending all the raw materials until uniform, mixing same until uniform and drying same, and then extruding, granulating, drying and casting same to obtain a high-transparency cellulose acetate film. In the cellulose acetate film prepared by using the method, the synergistic effect of a specific plasticizer and a specific transparent agent is utilized, such that the processing temperature is substantially reduced, and the prepared cellulose acetate film has a high light transmittance, low haze, a good ductility and flexibility, and a goo