Producing ice-repellent coating made of pyroelectric film, comprises coating surface with coating liquid made of polyvinylidene fluoride or tetraethyl orthosilicate, drying, heat treating, and applying electric field on coated surface

摘要

Producing ice-repellent coating made of pyroelectric film, comprises (a) coating a surface with a coating liquid made of polyvinylidene fluoride, (b) drying the coated surface, (c) phase transforming the polyvinylidene fluoride by heat treating the coated surface at 135-150[deg] C, and (d) applying an electric field on the coated surface, or (i) coating the surface with a coating liquid made of tetraethyl orthosilicate comprising pyroelectric nano- and/or microparticles, (ii) carrying out step (b), (iii) heat treating the coated surface at 50-100[deg] C, and (iv) carrying out step (d). Producing ice-repellent coating made of pyroelectric film, comprises: (a) coating a surface with a coating liquid made of polyvinylidene fluoride, in pure form, as a solution, mixture or as a dispersion, (b) drying the coated surface, (c) carrying out phase transformation of the polyvinylidene fluoride by heat treating the coated surface at 135-150[deg] C, and (d) applying an electric field on the coated surface; or (i) coating the surface with a coating liquid made of tetraethyl orthosilicate comprising pyroelectric nano- and/or microparticles made of strontium barium niobate, (ii) carrying out step (b), (iii) heat treating the coated surface at 50-100[deg] C, and (iv) carrying out step (d). An independent claim is also included for the ice-repellent surface coating comprising polyvinylidene fluoride or pyroelectric nano- and/or microparticles.