On the Electret Effect in Polymer–Ferroelectric Piezoceramic Composites with Various Values of the Electronegativity of the Polymer Matrix and Piezophase Cations

Studying properties of corona electret based on compositions of polylactic acid and bentonite

“…An increase in the bentonite content initially improves and then slightly reduces the electret properties of the polymer (Fig. 1); this finding is compliant with the earlier studies (Gilmutdinova et al 2017;Guzhova et al 2016;Kiliс et al 2013;Kurbanov et al 2018). Fine filler is known to affect the energy depth of the traps of polymers (Galikhanov et al 2005;Gojayev et al 2015;Temnov et al 2013).…”

“…However, unipolar corona discharge as the fastest and simplest method to obtain an electret is not suitable for polar polylactic acid. In order to change electrical and physical properties of the polymer, attempts were made to introduce fine fillers into the polymer matrix (Gilmutdinova et al 2017;Guzhova et al 2016;Ismayilova, Kuliev 2020;Kiliс et al 2013;Kurbanov et al 2018;Liu et al 2019).…”

Nonlinear Matrix Ferroelectric Composites on Construction Quality and Safety Measures

“…Under the conditions of discharge effect and covalent effect of piezoelectric phase cations, the phase electronegativity controlled by composite crystallization has a great influence on the formation mechanism of the stable electret effect. Kurbanov et al proposed a physical model of electret composites, which considers the effects of the same charge and different charges formed in the composites through the dispersion of composites and piezoelectric ceramic particles with various structures (rhombic, tetragonal, and heterostructure), but it has not been specifically applied [2]. According to the target customers' survey on the impact of service quality on customer satisfaction during the construction of independent houses in Australia, the expectations of target customers focus on "price and product" rather than "service quality".…”

“…Background. With the adjustment and support of national macro policies, China's construction projects have increased rapidly, and its role is fully re ected in the following points: (1) In the national GDP, the annual output value of the construction industry accounts for a large proportion, which plays an important role in the country's economic development; (2) Construction products directly or indirectly solve the basic living problems of people's clothing, food, and housing, and provide a great convenience for the daily needs of people's life; (3) e construction industry and its upstream and downstream industries have solved a large number of labor problems. With the vigorous development of the construction industry, the building materials used are also of great concern.…”