Cellulose Acetate Butyrate, abbreviated as CAB, has the chemical formula (C6H10O5) n and a molecular weight of millions. It is a solid powder like substance that is soluble in some organic solvents, such as acetic acid and acetic acid. Its solubility increases with increasing temperature. Cellulose acetate butyrate also has certain thermal stability and is not easily decomposed at room temperature.
Cellulose Acetate Butyrate has excellent properties such as moisture resistance, UV resistance, cold resistance, flexibility, transparency, and electrical insulation, and has good compatibility with resins and high boiling point plasticizers. Plastics, substrates, films, and coatings with different properties can be made according to the different content of butyryl. It can be formed by extrusion, injection molding, rotary molding, blow molding, etc., or by boiling spraying. In addition to hydroxyl and acetyl groups, cellulose acetate butyrate also contains butyryl groups, and its properties are related to the content of the three functional groups. Its melting point and tensile strength increase with the increase of acetyl content, and its compatibility with plasticizers and flexibility of the film increase within a certain range with the decrease of acetyl content. An increase in hydroxyl content can promote its solubility in polar solvents. An increase in the content of butyryl groups results in a decrease in density and an expansion of the dissolution range.
Application of Cellulose Acetate Butyrate
Cellulose Acetate Butyrate is used as a leveling agent and film-forming substance for producing high transparency and good weather resistance plastic substrates, films, and various coatings. An increase in the content of butyryl groups results in a decrease in density and an expansion of the dissolution range. Contains 12% to 15% acetyl groups and 26% to 29% butyryl groups. Transparent or opaque granular material, with tough texture and good cold resistance. CAB can be used as a raw material for the preparation of film substrates, aerial photography substrates, thin films, etc. It can also be used as raw materials for conveying pipelines, tool handles, cables, outdoor signs, tool boxes, etc. In addition, it can also be used as a raw material for producing peelable coatings, insulation coatings, weather resistant high-end coatings, and artificial fibers.
Characteristics of cellulose acetate butyrate
Cellulose acetate butyrate has some unique characteristics that make it widely recognized in applications. Firstly, it has good solubility and adsorbability, and can be fully mixed with other materials to achieve ideal processing performance. Secondly, cellulose acetate butyrate has good moisture absorption and moisturizing properties, which can effectively maintain the humidity and stability of the material. In addition, it also has good biocompatibility and will not have adverse effects on the human body or the environment.
Suggestion for the use of cellulose acetate butyrate
When using cellulose acetate butyrate, there are some suggestions and precautions that can help fully utilize its performance. Firstly, cellulose acetate butyrate should be dried before use to improve its solubility and stability. Secondly, during the processing, high temperature and acidic conditions should be avoided to prevent the decomposition and degradation of cellulose. In addition, relevant regulations and rules must be followed during use to ensure the compliance and safety of the materials.
How to judge the quality of cellulose acetate butyrate
The quality of cellulose acetate butyrate can be judged from the following aspects. Firstly, it can be determined by checking whether its appearance is dry and free of obvious impurities. Secondly, its solubility and stability can be tested, and high-quality cellulose acetate butyrate should have good solubility and thermal stability. In addition, it is also possible to refer to the reputation and certification status of suppliers and choose reputable and qualified suppliers to ensure product quality and reliability.
Unilong Industry is committed to the research of cellulose esters and is a global provider of CAB and CAP products. It can produce 4000 tons of cellulose acetate propionate (CAP) and cellulose acetate butyrate (CAB) annually, and is widely used in the processing of export products such as coatings, food packaging, children’s toys, medical materials, etc.
Post time: Aug-25-2023