Abstract: A multifunctional catalyst, a method for producing the same, and a method for using the same are provided. The multifunctional catalyst is applicable for recycling a polyester fabric. The multifunctional catalyst includes a carrier, and a first functional ionic liquid and a second functional ionic liquid that are grafted on the carrier. The carrier is an inorganic composite powder material, and is composed of following chemical components: C: Na—Ni/Al2O3. In a process of recycling the polyester fabric, the multifunctional catalyst simultaneously decolorizes and depolymerizes the polyester fabric. The first functional ionic liquid is used to decolorize the polyester fabric, and the second functional ionic liquid is used to depolymerize the polyester fabric.

Abstract: A circuit board cleaning system includes a cleaning tank, an ion exchange resin column, and a pump unit. The cleaning tank accommodates a cleaning liquid and allows a circuit board to be immersed in the cleaning liquid. The cleaning liquid includes a liquid water and a hydrocarbon-based surfactant. An ion exchange resin filled in the ion exchange resin column is a basic ion exchange resin. The pump unit is configured to pump the cleaning liquid into the ion exchange resin column, and enable the cleaning liquid to pass through the ion exchange resin column. When the cleaning liquid passes through the ion exchange resin column, the basic ion exchange resin deprotonates the hydrocarbon-based surfactant. After the cleaning liquid passes through the ion exchange resin column, the cleaning liquid is returned to the cleaning tank to remove acidic residue remaining on a surface of the circuit board.

Abstract: A semiconductor device structure is provided. The semiconductor device structure includes an interconnection structure over a semiconductor substrate and a conductive pillar over the interconnection structure. The conductive pillar has a protruding portion extending towards the semiconductor substrate from a lower surface of the conductive pillar. The semiconductor device structure also includes an upper conductive via between the conductive pillar and the interconnection structure and a lower conductive via between the upper conductive via and the interconnection structure. The lower conductive via is electrically connected to the conductive pillar through the upper conductive via. The conductive pillar extends across opposite sidewalls of the upper conductive via and opposite sidewalls of the lower conductive via. A top view of an entirety of the second conductive via is separated from a top view of an entirety of the protruding portion.

Abstract: An infrared reflective material, a method for producing the same, and an infrared reflective structure are provided. The method includes a preparation step implemented by mixing antimony and zirconium tungstate through a sol-gel manner to form zirconium tungstate composite powders doped with the antimony; a sintering step implemented by sintering the antimony and the zirconium tungstate in the zirconium tungstate composite powders doped with the antimony in a temperature gradient within a range from 500° C. to 1,100° C. for a predetermined time period, so that the antimony and the zirconium tungstate in the zirconium tungstate composite powders doped with the antimony bond together to form into composite tungsten oxide powders; a grinding step implemented by grinding the composite tungsten oxide powders; and a mixing step implemented by mixing the composite tungsten oxide powders that are grinded into an acrylic resin to form the infrared reflective material.

Abstract: An ionic liquid catalyst and a method for manufacturing the same are provided. The ionic liquid catalyst includes a carrier. The carrier contains nickel ferrite as a component, and an outer surface of the carrier is modified to have a decolorant and a degradation agent. The decolorant is grafted onto nickel atoms of the carrier, and the degradation agent is grafted onto iron atoms of the carrier. The method includes: providing the carrier that contains nickel ferrite as a component; and modifying the carrier, so that the nickel atoms of the carrier are grafted with the decolorant and the iron atoms of the carrier are grafted with the degradation agent. Accordingly, the ionic liquid catalyst is obtained.

Abstract: A polyvinyl chloride artificial leather without a foaming structure is provided. The polyvinyl chloride artificial leather includes a base fabric layer and a top fabric layer directly formed on the base fabric layer. The top fabric layer has a solid structure extendedly formed from one surface of the top fabric layer to the base fabric layer, and the solid structure is formed by a fabric composition. The solid structure has a predetermined thickness. The fabric composition includes 40 to 70 parts by weight of a polyvinyl chloride resin and 30 to 60 parts by weight of a polymer plasticizer. A weight average molecular weight of the polymer plasticizer is within a range from 1,500 to 6,000, a molecular structure of the polymer plasticizer has at least one soft segment that is in a linear shape, and the at least one soft segment has an ether group.

Abstract: A method for recycling polyester fabrics with use of an ionic liquid catalyst is provided, which includes: providing a recycled polyester fabric; and using a chemical de-polymerization liquid to chemically de-polymerize the recycled polyester fabric and form a de-polymerization product that includes bis-2-hydroxylethyl terephthalate (BHET). The chemical de-polymerization liquid is used to chemically de-polymerize the recycled polyester fabric in an environment where a de-polymerization catalyst exists, and the de-polymerization catalyst is the ionic liquid catalyst in a solid state.

Abstract: A method for improving hue of recycled bis-2-hydroxylethyl terephthalate by using ionic liquids including providing a recycled polyester fabric; using a chemical de-polymerization liquid to chemically de-polymerize the recycled polyester fabric to form a de-polymerization product; mixing the de-polymerization product with water to form an aqueous phase liquid; dispersing an ionic liquid impurity adsorption material into the aqueous phase liquid to adsorb impurities originally present in the recycled polyester fabric.

Abstract: An infrared reflective material, a method for producing the same, and an infrared reflective structure are provided. The method includes a preparation step implemented by mixing antimony and zirconium tungstate through a sol-gel manner to form zirconium tungstate composite powders doped with the antimony; a sintering step implemented by sintering the antimony and the zirconium tungstate in the zirconium tungstate composite powders doped with the antimony in a temperature gradient within a range from 500° C. to 1,100° C. for a predetermined time period, so that the antimony and the zirconium tungstate in the zirconium tungstate composite powders doped with the antimony bond together to form into composite tungsten oxide powders; a grinding step implemented by grinding the composite tungsten oxide powders; and a mixing step implemented by mixing the composite tungsten oxide powders that are grinded into an acrylic resin to form the infrared reflective material.

Abstract: An optical film for a cover plate of a flexible display, which is disposed on the display side of the flexible display, is disclosed. The optical film sequentially includes an optical substrate layer adjacent to the flexible display, a first adhesive layer, a polarizing layer, a second adhesive layer and a surface functional film which is disposed on the folding side of the flexible display. The optical film having excellent bending resistance and recovery property can be obtained by adjusting the ratio of the integrated bending modulus of the optical substrate layer, the polarizing layer, and the surface functional film to the total thickness of the optical film.

Abstract: An optical film for a cover plate of a flexible display, which is disposed on the display side of the flexible display, is disclosed. The optical film sequentially includes an optical substrate layer adjacent to the flexible display, a first adhesive layer, a polarizing layer, a second adhesive layer and a surface functional film which is disposed on the folding side of the flexible display. The optical film having excellent bending resistance and recovery property can be obtained by adjusting the ratio of the integrated bending modulus of the optical substrate layer, the polarizing layer, and the surface functional film to the total thickness of the optical film.

Abstract: A deodorant material and a manufacturing method thereof are provided. The deodorant material is a composite metal zinc silicate co-doped with a cross-group element in the composition, represented by MxNyZn2SiO4, and has a multiplying and deodorizing effect on gases such as amines and acetic acid, wherein M and N are different metal elements, M is a metal element of aluminum (Al) or zirconium (Zr), N is a metal element of zirconium (Zr), tin (Sn), bismuth (Sb) or bismuth (Bi), Si is silicon, O is oxygen, x, y is a positive number, and 0<x?1.0, 0?y?1.0, 0?y/x?1.0.

Abstract: A transparent heat-shielding material having a chemical formula CsXNYWO3-ZClC, characterized by being co-doped with elements of different groups in the periodic table, wherein Cs is cesium; N is tin (Sn) or antimony (Sb) or bismuth (Bi); W is tungsten; O is oxygen; and X, Y, Z, and C are positive numbers satisfying the following conditions: X?1.0, Y?1.0, Y/X?1.0, Z?0.6, and C?0.1; the transparent heat-shielding material is used to make a highly transparent and highly effective heat-shielding film which can be adhered to glass panels of buildings and automobiles to block infrared radiation in the wavelength range of 800-2000 nm, thereby insulating heat and saving energy; and the film is also applicable as a composite substrate for electronic components.