Abstract: A display substrate and a display apparatus. The display substrate comprises a display area and a non-display area, wherein the non-display area comprises a bending area, an outer-side edge area of the non-display area is a cutting retention area, and at least part of the cutting retention area is located between the display area and the bending area; and the display substrate comprises a base, a light-emitting device layer, a packaging layer, a touch-control layer, a first organic layer and a blocking portion. The light-emitting device layer is located on the base and is located in the display area. The packaging layer is located on the side of the light-emitting device layer that is away from the base. The touch-control layer is located on the side of the packaging layer that is away from the base. The first organic layer is located on the side of the touch-control layer that is away from the base, and is located in the display area and the non-display area.

Abstract: An array substrate is provided. The array substrate includes a plurality of first reset signal lines configured to provide a plurality of first reset signals, a plurality of second reset signal lines configured to provide a plurality of second reset signals, a plurality of third reset signal lines, and a plurality of first connecting lines. A respective first reset signal line is connected to a row of first connecting lines, which in turn are connected to source electrodes of first reset transistors in a row of subpixels, respectively. The plurality of second reset signal lines and the plurality of third reset signal lines form an interconnected reset signal supply network. A respective second reset signal line is connected to one or more of the plurality of third reset signal lines. A respective third reset signal line is connected to one or more of the plurality of second reset signal lines.

Abstract: A microspheric ionomer having a cross-linked structure, a preparation method therefor, applications thereof, and a preparation system thereof. The ionomer comprises structure units A represented by formula (1), structure units B represented by formula (2), and a cross-linking structure provided by a cross-linking agent, M being separately selected from H, a metal cation, and a straight chain, a saturated alkyl of branched or ring-shaped C1-C20, R being H or a methyl; and metal cations are introduced to part of structure units A in the ionomer. The ionomer shows an outstanding effect on nucleation of PET, serves as a nucleating agent for PET modification, so as to obtain a corresponding PET composition.

Abstract: The disclosure discloses a medicinal and edible dual-purpose composition capable of resisting retinal blue light damage, and a preparation method and application. The medicinal and edible dual-purpose composition capable of resisting retinal blue light damage disclosed by the disclosure includes the following components in parts by weight: 40-60 parts of a microencapsulated nutrient component, 1-3 parts of a sweetening agent, 10-20 parts of microcrystalline cellulose, and 0.5-2 parts of magnesium stearate. The medicinal and edible dual-purpose composition product is simple and quick in preparation.

Abstract: The invention belongs to the field of olefin polymerization and relates to a propylene-based copolymer, its preparation process and use, and a polypropylene composition thereof. The propylene-based copolymer can contain 60-95 wt % of propylene-derived structural units and 5-40 wt % of comonomer-derived structural units; the propylene-based copolymer has a comonomer dispersion degree D[PCP]/[C] in the range of 50%-70%, wherein the comonomer dispersion degree D[PCP]/[C]=[PCP]/[C]×100%. Upon blending the propylene-based copolymer of the present invention with a polypropylene, the copolymer has excellent compatibility with polypropylene, and can promote the crystallization of the polypropylene and can improve the mechanical properties of the resulting polypropylene material.

Abstract: A microspheric ionomer having a cross-linked structure, a preparation method therefor, applications thereof, and a preparation system thereof. The ionomer comprises structure units A represented by formula (1), structure units B represented by formula (2), and a cross-linking structure provided by a cross-linking agent, M being separately selected from H, a metal cation, and a straight chain, a saturated alkyl of branched or ring-shaped C1-C20, R being H or a methyl; and metal cations are introduced to part of structure units A in the ionomer. The ionomer shows an outstanding effect on nucleation of PET, serves as a nucleating agent for PET modification, so as to obtain a corresponding PET composition.

Abstract: A polypropylene composition, a preparation method therefor, and an article made therefrom, the polypropylene composition comprising: (a) 70-95% by weight of a crystalline homo-polypropylene having a isotactic pentad fraction of 96% or more and forming a continuous matrix phase in the polypropylene composition; (b) 5-30% by weight of an ethylene-propylene elastic copolymer containing 20-35% by weight of an ethylene structure unit and 65-80% by weight of a propylene structure unit, and forming a dispersed rubber phase in the continuous matrix phase, such that the rubber phase can at least partially deform under an orientation force and form an orientation state structure, wherein the ratio of melt mass flow rate measured at 230° C. and a 2.16 kg load of the crystalline homo-polypropylene and the polypropylene composition is 0.5-2.0.

Abstract: The invention belongs to the field of polymers, and relates to a grafting-modified polypropylene material for an insulating material and preparation method thereof. The grafting-modified polypropylene material comprises structural units derived from a polypropylene copolymer and structural units derived from an alkenyl-containing polymerizable monomer; the content of the structural units derived from the alkenyl-containing polymerizable monomer and in a grafted state in the grafting-modified polypropylene material is 0.1 to 14 wt %; the polypropylene copolymer has at least one of the following characteristics: the comonomer content is 0.5 to 40 mol %; the content of xylene solubles is 2 to 80 wt %; the comonomer content in the xylene solubles is 10 to 70 wt %; the intrinsic viscosity ratio of the xylene solubles to the polypropylene copolymer is 0.3 to 5.

Abstract: The invention belongs to the field of polymers, and relates to an anhydride group-containing polypropylene graft for an insulating material and preparation method thereof. The anhydride group-containing polypropylene graft comprises structural units derived from a polypropylene copolymer, structural units derived from an anhydride monomer and structural units derived from an alkenyl-containing polymerizable monomer; the content of the structural units derived from the anhydride monomer and the alkenyl-containing polymerizable monomer and in a grafted state in the anhydride group-containing polypropylene graft is 0.

Abstract: A method for preparing an olefin-olefinic alcohol copolymer and an olefin-olefinic alcohol copolymer prepared by the method are provided. The catalyst used in the method for preparing the olefin-olefinic alcohol copolymer has a diimine metal complex as shown in Formula I.

Abstract: Disclosed is a biphenol metal complex. The structure thereof is as represented by formula I, wherein R1 and R1? are each independently selected from hydrogen and a substituted or unsubstituted C1-C20 hydrocarbyl; R3—R7, R3?—R7? are each independently selected from hydrogen and a substituted or unsubstituted C1-C20 hydrocarbyl, any two adjacent groups of R3—R7 are optionally linked to form a ring, and any two adjacent groups of R3?—R7? are also optionally linked to form a ring; M and M? are each independently selected from the Group 4 metals; each X is independently selected from the group consisting of a hydrocarbyl having 1 to 20 carbon atoms, hydride, amido, alkoxide, alkyl sulfide, alkyl phophide, halide, diene, amine, phosphine, ether, and combinations thereof; m and n are independently an integer of from 1 to 4; and L is a divalent linking group.

Abstract: Disclosed is a catalyst for olefin polymerization, comprising a main catalyst and a cocatalyst; the main catalyst is a bisphenol metal complex represented by formula I, and the cocatalyst comprises an organoaluminum compound; in formula I, R1, R1?, R2, R2? are the same or different, and are each independently selected from hydrogen and a substituted or unsubstituted C1-C20 hydrocarbyl; R3-R7, R3?-R7? are the same or different, and are each independently selected from hydrogen and a substituted or unsubstituted C1-C20 hydrocarbyl; R8 and R9 are the same or different, and are each independently selected from hydrogen or a substituted or unsubstituted C1-C20 hydrocarbyl; M and M? are the same or different, and are selected from Group IV metals; and X is halogen;

Abstract: A microspheric ionomer having a cross-linked structure, a preparation method therefor, applications thereof, and a preparation system thereof. The ionomer comprises structure units A represented by formula (1), structure units B represented by formula (2), and a cross-linking structure provided by a cross-linking agent, M being separately selected from H, a metal cation, and a straight chain, a saturated alkyl of branched or ring-shaped C1-C20, R being H or a methyl; and metal cations are introduced to part of structure units A in the ionomer. The ionomer shows an outstanding effect on nucleation of PET, serves as a nucleating agent for PET modification, so as to obtain a corresponding PET composition.

Abstract: The invention relates to a flame-retardant thermoplastic material, comprising thermoplastic base resin, a flame retardant, and an optional antioxidant, wherein the flame retardant comprises a complex of phosphine oxide and a transition metal salt. The invention also relates to flame-retardant thermoplastic expanded beads. A foam molding prepared from the flame-retardant thermoplastic expanded beads has good flame-retardant and antistatic properties, has excellent mechanical properties and is widely used.

Abstract: The present invention refers to a flame retardant comprising a complex formed by phosphine oxide and transition metal salt, wherein has good flame retardant property. The present invention also refers to a composite flame retardant and flame retardant antistatic composition. The present invention also further refers to a flame resistant method, which adds the abovementioned flame retardant, composite flame retardant or flame retardant antistatic composition into the material, so that said material has flame retardance or flame retardance and antistatic, and has excellent mechanical properties.

Abstract: The invention discloses a process for preparing high-performance propylene polymers, the process utilizing a high activity, highly stereoselective Ziegler-Natta catalyst and two or more stages of polymerization carried out under different hydrogen concentrations to prepare propylene polymers having broad molecular weight distribution, wherein non-uniformness of isotacticity of molecular chains of the final propylene polymers is improved by adjusting or controlling stereoselectivity of catalytic active sites under different hydrogen concentrations, namely, making the low molecular weight fraction of the polymers having a higher isotacticity and making the high molecular weight fraction of the polymers having a lower isotacticity, thereby overcoming the drawbacks of the propylene polymers having broad molecular weight distribution known in the art. The resulting final polymers have excellent combined properties, in particular, remarkably improved mechanical properties.

Abstract: The present invention refers to a flame retardant comprising a complex formed by phosphine oxide and transition metal salt, wherein has good flame retardant property. The present invention also refers to a composite flame retardant and flame retardant antistatic composition, wherein composite flame retardant comprise the flame retardant and the inorganic flame retardant component as described above, which has an enhanced flame retardant effect; said flame retardant antistatic composition, comprising above described flame retardant or composite flame retardant and carbon nanofiber antistatic agent, wherein carbon nanofiber antistatic agent could have interaction with flame retardant, effectively reducing the amount of flame retardant, and the combination with the flame retardant without the adverse effect of each other which result in negative performance of each other, does not influence the subsequent foaming process and the foam structure and physical properties.

Abstract: The invention relates to a flame-retardant thermoplastic material, comprising thermoplastic base resin, a flame retardant, and an optional antioxidant, wherein the flame retardant comprises a complex of phosphine oxide and a transition metal salt. The invention also relates to flame-retardant thermoplastic expanded beads. A foam molding prepared from the flame-retardant thermoplastic expanded beads has good flame-retardant and antistatic properties, has excellent mechanical properties and is widely used.

Abstract: The present invention relates to a propylene-butene-1 random copolymer which has a butene-1 content of 1-6 mol % and a relative dispersity of butene-1, as determined according to NMR method, of greater than 98.5%. The propylene-butene-1 random copolymer of the present invention has a high relative dispersity of butene-1, as well as better transparency and heat resistance, so that it is more suitable for packaging food that may be edible after heating. Moreover, the copolymer has a lower xylene solubles content at room temperature. In addition, the present invention further relates to a method for preparing the copolymer and to a composition and an article comprising the copolymer.

Abstract: The invention discloses a process for preparing high-performance propylene polymers, the process utilizing a high activity, highly stereoselective Ziegler-Natta catalyst and two or more stages of polymerization carried out under different hydrogen concentrations to prepare propylene polymers having broad molecular weight distribution, wherein non-uniformness of isotacticity of molecular chains of the final propylene polymers is improved by adjusting or controlling stereoselectivity of catalytic active sites under different hydrogen concentrations, namely, making the low molecular weight fraction of the polymers having a higher isotacticity and making the high molecular weight fraction of the polymers having a lower isotacticity, thereby overcoming the drawbacks of the propylene polymers having broad molecular weight distribution known in the art. The resulting final polymers have excellent combined properties, in particular, remarkably improved mechanical properties.