5results about How to "Lower percolation threshold" patented technology

This application relates to the field of metal surface treatment, specifically disclosing a fingerprint-resistant galvanized sheet and its production method. The fingerprint-resistant galvanized sheet includes a substrate, a galvanized layer formed on the surface of the substrate, and an inorganic passivation layer and an organic composite coating sequentially coated on the surface of the galvanized layer. The organic composite coating includes an acrylate-polysiloxane modified resin system and a hybrid conductive network filler dispersed in the resin system. The hybrid conductive network filler is composed of two-dimensional nano-graphene and one-dimensional conductive material in a mass ratio of 5:1 to 15:1, and the surface of the hybrid conductive network filler is grafted with a silane coupling agent. The organic composite coating is distributed in a transverse gradient on the surface of the galvanized sheet, with a film weight of 0.8-1.0 g / m² in the central region and 0.6-0.8 g / m² in the edge region. The fingerprint-resistant galvanized sheet of this application exhibits excellent fingerprint resistance and corrosion resistance, while also achieving high conductivity.

The invention discloses a preparation method of a flexible automatic temperature limiting conductive material, and belongs to the technical field of functional material preparation. The normal-temperature flexible thermal management material is prepared by using EVA as a supporting material, hexadecanoic acid and stearic acid as phase-change materials and graphite as a conductive filler and adjusting the use ratio of the materials, so that excellent temperature control performance and a relatively low conversion temperature point are achieved. Meanwhile, the material is combined with the interdigital electrode, so that the heat sensitivity of the device is improved, the resistance value of the composite material is reduced, and the use requirements under different powers are met by adjusting the pattern of the interdigital electrode, so that the response speed of the whole composite material to the temperature is improved; high PTC strength and good room temperature resistivity are achieved by changing the content of the conductive filler in the composite material. Under different proportions of components, the composite material has good electric heating performance, and meanwhile, under the conditions of different voltages, cyclic pressurization and further pressurization, the temperature control condition is good.

This invention discloses an enhanced antistatic polyetheretherketone (PEEK) composite material and its preparation method. The composite material is prepared from the following raw materials in parts by weight: 60-85 parts of PEEK resin, 5-15 parts of a first synergistic component, 3-10 parts of a second synergistic component, 2-8 parts of a third synergistic component, and 1-5 parts of a high-temperature processing aid. The first synergistic component is a mixture of a metal-based conductive filler and a high-temperature resistant antistatic synergist; the second synergistic component is ionic liquid-functionalized modified graphene; the third synergistic component is a composite of carbon nanotubes and conductive nanofibers; and the high-temperature processing aid includes a high-temperature lubricant and a high-temperature antioxidant. The preparation method includes steps such as preparing various premixes, melt blending, extrusion granulation, and supercritical fluid in-mold foaming. This invention constructs a stable three-dimensional conductive network through the synergistic effect of multi-scale conductive fillers, giving the composite material excellent antistatic properties.

The invention discloses printable electrode slurry for a flexible electronic device and a preparation method of the printable electrode slurry, and belongs to the technical field of electrode slurry, and the printable electrode slurry comprises flaky tungsten powder, mesoporous silica, fibrous magnesium oxide powder, a defoaming agent, a leveling agent and the balance of a waterborne polyurethane binder. According to the flaky tungsten powder, a continuous conductive network is formed through surface contact, and the seepage threshold value is reduced; the mesoporous silica is used as a flexible buffer phase and can absorb more than 90% of bending stress; the silicon dioxide-magnesium oxide composite ceramic phase is cured at 180 DEG C to form a compact framework, so that the resistance fluctuation of the slurry under the thermal cycle of-40 DEG C to 150 DEG C is less than 3%, and the resistance increase is less than 8% after the slurry is aged for 500 hours at the humidity of 85 DEG C / 85%.