The results showed that the polarization of PZT could be carried out efficiently, and the piezoelectric coefficient increased and showed polar values at 8 vol%–10 vol% PANI by increasing the volume fraction of PANI in the composites. prepared lead zirconate titanate (PZT)/polyvinylidene fluoride (PVDF) 0-3 type piezoelectric composites doped with polyaniline (PANI) by the hot-pressing method and characterized the polarization properties of the composites and also measured their piezoelectric properties. Polyvinylidene fluoride (PVDF) is one of the main substrate materials used in composite functional materials. Among them, type 0-3 is the simplest form, which is formed by piezoelectric ceramic powder dispersed in a polymer matrix and has the characteristics of good flexibility and various processing shapes. ![]() Therefore, it is valuable to obtain both good piezoelectric properties of ceramic materials and good mechanical strength and processing properties of polymers by compounding polymers with inorganic piezoelectric materials to become composite piezoelectric materials.Īccording to the connectivity of each material, piezoelectric composites can be divided into 10 basic types, namely, 0-0, 0-1, 0-2, 0-3, 1-1, 1-2, 1-3, 2-2, 2-3, and 3-3 types, and it is customary to use the former number to label the ceramic phase and the latter number to indicate the polymer phase. In contrast, polymers have good mechanical and processing properties, as well as high breakdown strength, but a disadvantage of polymers is their low piezoelectric strain constants. It is easy to see that ceramic materials have satisfactory piezoelectricity and low dielectric loss however, this rather increases the difficulty of device integration, as piezoelectric ceramic materials are quite fragile. Compared to piezoelectric ceramics and piezoelectric crystals, piezoelectric polymers have smaller piezoelectric stress constants (d 31) than piezoelectric ceramics, yet piezoelectric polymers have much higher piezoelectric voltage constants (g 31) than piezoelectric ceramics, which suggests that they are better sensor materials than piezoelectric ceramics. Piezoelectric ceramic materials have a larger piezoelectric coefficient compared to polymers, but they also have a higher elastic modulus and are therefore stiffer than polymers, which makes ceramic materials insensitive to small vibrations and more susceptible to stress damage. With the development of science and technology, modern industries are beginning to demand integrated electronic components, and tiny-scale piezoelectric films, especially composite piezoelectric films combining piezoelectric ceramics and polymers, have received extensive attention from research scholars in various industries. The results show that the 0-3 type (ATHP) 2PbBr 4 piezoelectric composite film has good ferroelectricity and piezoelectricity, and the calculated piezoelectric voltage constant g 33 after polarization is about 358.6 × 10 −3 Vm/N, which is higher than that of PVDF material, and is important for the fabrication of high-performance piezoelectric sensors. In this paper, a new molecular piezoelectric material (C 5H 11NO) 2PbBr 4 with a high Curie temperature Tc and a large piezoelectric voltage constant g 33, referred to as (ATHP) 2PbBr 4, was used to prepare a 0-3 type piezoelectric composite film by compounding with an organic polymer material polyvinylidene fluoride (PVDF), and its ferroelectricity was investigated. The material composite, on the other hand, can combine the advantages of both, so that it has both flexibility and a high piezoelectric coefficient. ![]() Traditional pure inorganic piezoelectric materials have better piezoelectricity but higher rigidity pure organic piezoelectric materials have better flexibility but havetoo small a piezoelectric coefficient. They are a class of functional materials with broad application prospects. Since their discovery, ferroelectric materials have shown excellent dielectric responses, pyroelectricity, piezoelectricity, electro-optical effects, nonlinear optical effects, etc.
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