|TOYOSHIN CHEMICAL INDUSTRY CO|
Others Composites and PolymersComposite
ClayAl2O3 • 2SiO2 • 2H2O Nanoparticle /Nanopowder CAS Number : 1332-58-7
lightweight organic bentonite, it exhibits the same elasticity modulus and tensile strength as compared with the addition of 20 to 60 wt% of reinforcing material such as kaolin, silica and talc, which are conventionally used, resulting in weight saving. Since the barrier crystal grain size is a tabular nanoparticle size and has a high aspect ratio, the gas barrier properties of gases such as moisture, solvent, chemicals such as oxygen, oxygen and odor are improved. Dimensional Stability Dramatically reduces the coefficient of thermal expansion and improves dimensional stability. The temperature at which the resin begins to soften rises owing to the addition of several% of the heat distortion temperature . Flame retardancy The maximum heat release rate decreases, smoke decreases, and flame retardancy improves due to an increase in carbonaceous formation, which is a nonflammable film. Because the organic bentonite acts as a dye adsorption site in the resin due to the dyeable colloidal nature, large surface area and high adsorption property, the resin can be dyed. Smoothness Since the particle diameter is smaller than that of the conventional reinforcing material, the smoothness of the resin surface is improved and the appearance of the coated product is improved. It is possible to suppress / prevent the adhesion between the adhesion-inhibiting nanocomposite films.
montmorillonite crystal is an inorganic compound having a nano-sized layer structure, it is attracting attention as a nanocomposite material in which organized bentonite is peeled and dispersed to nano level in various resins. Nanocomposite resins with organic bentonite have the following excellent functions. By the addition of 3 to 5 wt% of In order to make the organic bentonite as a nanocomposite material to exhibit the above functions, selection of a compound to be modified to the end face of the organic bentonite crystal, denaturation treatment of the resin, establishment of melt kneading conditions with the resin, etc. are the key points. For resins with high melting temperature, organic bentonite with heat resistance is required.
In order to fully demonstrate its ability to use organic bentonite as a functional filler material, it is important how the layered structure of organic bentonite can be peeled and dispersed to the nano level in the resin. Factors important for melt-kneading conditions include factors such as twin-screw extruder, screw shape, high screw rotation, melting temperature, melting time, moderate residence time.