The invention discloses micro-nano multi-layer composite
dielectric materials and a preparation method and a device thereof. The micro-nano multi-layer composite
dielectric materials comprise a
polymer layer and a
polymer blend layer, and the
polymer layer and the
polymer blend layer interlace with each other. In the
polymer blend layer, one kind or more kinds of padding among globular padding, flakiness padding, threadiness padding and rodlike padding are evenly distributed in a polymer matrix. According to the micro-nano multi-layer composite
dielectric materials and the preparation method and the device thereof, the padding is added into the polymer matrix, a
specialty polymer micro-nano stacking and co-extruding device is used, a
polymer dielectric membrane with a micro-nano multi-layer structure is prepared, thus dispersibility of the padding is improved effectively and modified padding is evenly distributed in the polymer matrix in a product, and therefore the purpose of controlling the dielectric property of a polymer is realized. In the preparation process of the micro-nano multi-layer composite dielectric materials, no
solvent or binder exists, production cost is low, the micro-nano multi-layer composite dielectric materials are environment friendly,
continuous production can be achieved, and the dielectric constant of the obtained product is improved notably.