Abstract: Disclosed are a dual-scale toughened cement-based composite material and use thereof. The cement-based composite material includes a cementitious material, a polymer monomer, an initiator, a crosslinking agent, and fibers, wherein functional groups of the polymer monomer include a carbon-carbon double bond and a carboxyl group; and the fibers include steel fibers and/or synthetic fibers, the synthetic fibers including one or more selected from the group consisting of polyvinyl alcohol fibers, polypropylene fibers, glass fibers, and carbon fibers.

Abstract: The present disclosure relates to the technical field of protective coatings, and provides a graphene oxide (GO)-modified styrene-acrylic Pickering emulsion and a composite emulsion, and preparation methods and use. In the present disclosure, GO is added during polymerization of a styrene-acrylic monomer, and the GO is attached to an interface of a styrene-acrylic core while forming the styrene-acrylic core; and the GO is “stitched” at the interface of the styrene-acrylic core by a silane coupling agent, thus giving the GO a better dispersion effect. After adding a shell phase emulsion, a part of the styrene-acrylic core that is not completely wrapped by a GO sheet may be grafted with a shell phase, and cross-linking between a core phase and the shell phase can further enhance a steric stability of the GO; and the GO can fully connect the styrene-acrylic core with a siloxane shell, improving the molecular configuration of a siloxane component.

Abstract: The present disclosure provides a performance testing method and system for a polycarboxylate superplasticizer in a concrete system. An interface model is constructed based on a calcium silicate hydrate (C—S—H) gel model and a molecular dynamics model of a polycarboxylate superplasticizer, which can cover complexity of a cement particle interface and variability of the polycarboxylate superplasticizer, and can also establish a link between a microstructure of the polycarboxylate superplasticizer and a macroscopic fluidity of a cement across multiple scales. Meanwhile, friction resistance is accurately calculated based on the constructed interface model to accurately test a performance of the polycarboxylate superplasticizer, thereby shortening a screening cycle of the polycarboxylate superplasticizer and improving a performance optimization efficiency.

Abstract: A photoelectric sensor includes: a substrate with a light-receiving surface. The substrate includes a photosensitive pixel area and the photosensitive pixel area includes pixel unit areas distributed in a matrix. Light traps are located in a part of a thickness of the substrate in the pixel unit area. The light traps are located on the light-receiving surface of the substrate, and distributed in a matrix along a row direction and a column direction. The row direction is perpendicular to the column direction. Adjacent light traps in the column direction are connected, and adjacent light traps in the row direction are connected. Side walls of the plurality of light traps surround and form a plurality of protrusions. Adjacent protrusions are connected, and the plurality of protrusions has a shape of octagonal pyramid.

Abstract: A display device includes first and second camera regions, a function integrating region, and an ambient light sensing region. A display panel has a first through hole in the first camera region, a second through hole in the second camera region, and a non-display region between the through holes. A cover panel is provided on the display side of the display panel. A grid glue has an orthographic projection of the first openings of the two camera regions and has an area greater than an orthographic projection of the through holes. A rigid heat dissipating layer has a second opening in all the four adjacent regions, and an orthographic projection of the second openings has an area greater than the orthographic projection of the first openings, and a photosensitive module defines an orthographic projection with an area greater than the orthographic projections of the first openings and the second openings.

Abstract: The present disclosure provides a styrene acrylate-siloxane composite emulsion with a core-shell structure, and a preparation method and use thereof, and relates to the technical field of protective coatings. In the present disclosure, a core emulsion is prepared through two-step emulsification with styrene, an acrylate monomer, a first emulsifying agent, a first initiator, a second initiator, an alkaline reagent, and water as raw materials; then a shell emulsion is prepared with a siloxane monomer, a hydroxyl-containing acrylate monomer, an emulsifying agent, and water as raw materials; and then the core emulsion, the shell emulsion, and an initiator are subjected to a grafting reaction to obtain the styrene acrylate-siloxane composite emulsion with a core-shell structure.

Abstract: There is provided a display device including a cover plate and a display panel; the cover plate includes a middle plane part, a first edge curved surface part, a second edge covered surface part and a corner curved surface part; the display panel includes a middle part, an edge part and a corner part; the middle part is arranged corresponding to the middle plane part; the edge part includes a first edge part and a second edge part; the first edge part and the first edge curved surface part are arranged correspondingly, and the second edge part and the second edge curved surface part are arranged correspondingly; the corner part and the corner curved surface part are correspondingly arranged; the middle part is in a display area; at least a portion of the edge part and the corner part adjacent to the middle part is in the display area.

Abstract: A spinning solution, a heat-resistant creep-resistant fiber and preparation method therefor are provided. The spinning solution includes a polyethylene, a solvent and a photoinitiator, and the content of the photoinitiator is 0.2 wt %-10 wt % of the mass of the polyethylene; gel-spinning and multi-stage drafting the spinning solution; then performing ultraviolet irradiation by an ultraviolet light source to obtain a heat-resistant creep-resistant polyethylene fiber; the light intensity and the time of the ultraviolet light source is 100 W/cm2-5000 W/cm2 and 10 s-600 s, respectively; the gel content and the crystallinity of the heat-resistant creep-resistant polyethylene fiber is 20 wt %-100 wt % and 50 wt %-90 wt %, respectively; the creep rate of the fiber is 10?8 s?1-10?7 s?1 under conditions of a temperature of 70° C. and a load of 300 MPa; the fracture temperature of the fiber is 155° C.-245° C. under conditions of a load of 15 MPa and a heating rate of 2° C./min.

Abstract: A touch sensor and a display apparatus are disclosed. The touch sensor includes a first opening region, first touch electrodes, second touch electrodes, at least one first jumper conductor wire and at least one first conducting electrode. at least one of the first touch electrodes is separated by the first opening region into a first electrode portion and a second electrode portion; the first jumper conductor wire at least partially surrounds the first opening region; the at least one first conducting electrode is electrically connected with the first jumper conductor wire; a line width of the first jumper conductor wire is less than a maximum width of the at least one first conducting electrode in a first direction (D1); and the first electrode portion and the second electrode portion are electrically connected at least via the at least one first conducting electrode and the first jumper conductor wire.

Abstract: A flexible printed circuit board and a display touch apparatus are provided. The flexible printed circuit board includes a binding terminal region, a first circuit region and a second circuit region; the binding terminal region includes multiple terminals, the first circuit region includes a driver circuit, multiple first signal lines, multiple second signal lines, and multiple third signal lines, and the second circuit region includes an external connector; first ends of the multiple first signal lines, the multiple second signal lines and the multiple third signal lines are respectively connected to the terminals of the binding terminal region; second ends of the multiple first signal lines and the multiple second signal lines are respectively connected to the driver circuit; and second ends of the multiple third signal lines are connected to the connector.

Abstract: A flexible display panel, touch display module and display device are provided. The flexible display panel includes a display substrate and a spacer on a side of the display substrate away from a display side. The spacer includes a first side surface facing the display side of the display substrate and a second side surface away from the display side. The display substrate includes an arc surface region close to an edge and a panel bending pad bent to the side of the display substrate away from the display side and fixed on the second side surface of the spacer. Shape of the first side surface of the spacer is consistent with that of portion of the display substrate facing first side surface of the spacer. Portion of second side surface of the spacer corresponding to the arc surface region is a surface including a plane or multiple planes.

Abstract: A flexible printed circuit board and a display touch apparatus are provided. The flexible printed circuit board includes a binding terminal region, a first circuit region and a second circuit region; the binding terminal region includes multiple terminals, the first circuit region includes a driver circuit, multiple first signal lines, multiple second signal lines, and multiple third signal lines, and the second circuit region includes an external connector; first ends of the multiple first signal lines, the multiple second signal lines and the multiple third signal lines are respectively connected to the terminals of the binding terminal region; second ends of the multiple first signal lines and the multiple second signal lines are respectively connected to the driver circuit; and second ends of the multiple third signal lines are connected to the connector.

Abstract: A flexible display panel, touch display module and display device are provided. The flexible display panel includes a display substrate and a spacer on a side of the display substrate away from a display side. The spacer includes a first side surface facing the display side of the display substrate and a second side surface away from the display side. The display substrate includes an arc surface region close to an edge and a panel bending pad bent to the side of the display substrate away from the display side and fixed on the second side surface of the spacer. Shape of the first side surface of the spacer is consistent with that of portion of the display substrate facing first side surface of the spacer. Portion of second side surface of the spacer corresponding to the arc surface region is a surface including a plane or multiple planes.

Abstract: A touch sensor and a display apparatus are disclosed. The touch sensor includes a first opening region, first touch electrodes, second touch electrodes, at least one first jumper conductor wire and at least one first conducting electrode.

Abstract: A reinforcement board for a flexible printed circuit, a flexible printed circuit assembly, and a display device. The reinforcement board for a flexible printed circuit comprises a substrate; the substrate comprises a first surface and a second surface which are opposite to each other; a through hole passing through the first surface and the second surface is provided on the substrate; the first surface, the second surface, and the wall of the through hole are all provided with a conductive layer; and the conductive layers on the first surface and the second surface are connected by means of the conductive layer on the wall of the through hole.

Abstract: A display device includes first and second camera regions, a function integrating region, and an ambient light sensing region. A display panel has a first through hole in the first camera region, a second through hole in the second camera region, and a non-display region between the through holes. A cover panel is provided on the display side of the display panel. A grid glue has an orthographic projection of the first openings of the two camera regions and has an area greater than an orthographic projection of the through holes. A rigid heat dissipating layer has a second opening in all the four adjacent regions, and an orthographic projection of the second openings has an area greater than the orthographic projection of the first openings, and a photosensitive module defines an orthographic projection with an area greater than the orthographic projections of the first openings and the second openings.

Abstract: The disclosure relates to the technical field of building materials, and in particular, to lightweight aggregate ultra-high performance concrete (UHPC) and a preparation method thereof. The lightweight aggregate UHPC provided in the disclosure is prepared from the following components in parts by weight: cement 220-260 parts; silica fume 100-120 parts; expanded perlite powder 120-160 parts; expanded perlite 230-260 parts; polycarboxylate superplasticizer 15-20 parts; steel fiber 76-93 parts; and water 140-160 parts, where a maximum particle size of the expanded perlite powder is 0.075 mm; and a particle size range of the expanded perlite is 0.075-0.6 mm. The lightweight UHPC prepared according to the design of the disclosure has excellent density performance, and can satisfy requirements of concrete components, etc.

Abstract: The present invention provides a display module and a fixing method therefor, and a display apparatus. The display module is provided with a light-shielding structure including a light-shielding part and a supporting part that are integrally formed, wherein the light-shielding part is arranged around the inner wall of a through hole; the supporting part is fixed to a side of a display panel away from a cover plate; and an orthographic projection of the light-shielding part on the cover plate and an orthographic projection of a light-shielding layer on the cover plate at least partially overlap, such that a transition area is surrounded by the light-shielding layer and the light-shielding part in a through hole area.

Abstract: The disclosure relates to the technical field of building materials, and in particular, to lightweight aggregate ultra-high performance concrete (UHPC) and a preparation method thereof. The lightweight aggregate UHPC provided in the disclosure is prepared from the following components in parts by weight: cement 220-260 parts; silica fume 100-120 parts; expanded perlite powder 120-160 parts; expanded perlite 230-260 parts; polycarboxylate superplasticizer 15-20 parts; steel fiber 76-93 parts; and water 140-160 parts, where a maximum particle size of the expanded perlite powder is 0.075 mm; and a particle size range of the expanded perlite is 0.075-0.6 mm. The lightweight UHPC prepared according to the design of the disclosure has excellent density performance, and can satisfy requirements of concrete components, etc.

Abstract: There is provided a display device including a cover plate and a display panel; the cover plate includes a middle plane part, a first edge curved surface part, a second edge covered surface part and a corner curved surface part; the display panel includes a middle part, an edge part and a corner part; the middle part is arranged corresponding to the middle plane part; the edge part includes a first edge part and a second edge part; the first edge part and the first edge curved surface part are arranged correspondingly, and the second edge part and the second edge curved surface part are arranged correspondingly; the corner part and the corner curved surface part are correspondingly arranged; the middle part is in a display area; at least a portion of the edge part and the corner part adjacent to the middle part is in the display area.