Abstract: A polyurethane urea composition and a preparation method thereof are provided. The method includes mixing and reacting an urea and an amine compound to obtain a polyurea oligomer, and mixing and reacting the polyurea oligomer and a cyclic carbonate compound to obtain a polyurethane urea composition having a repeating unit represented by formula I: —R2—U2—U1—U2—R2—, wherein ??[formula I] U1 is a is an integer of 1 to 10000, each U2 is independently each R1 is independently a C1 to C20 alkylene group, a C3 to C20 cycloalkylene group, a C8 to C20 alkylarylene group, a polyether group having a weight-average molecular weight of 100 g/mol to 10000 g/mol, or a combination thereof, and each R2 is independently an aliphatic group, a cycloaliphatic group, an aromatic group substituted by an alkyl or an unsubstituted aromatic group, an oligo polyether group, an oligo polyester group, or a combination thereof.

Abstract: A polyurethane urea composition and a preparation method thereof are provided. The method includes mixing and reacting an urea and an amine compound to obtain a polyurea oligomer, and mixing and reacting the polyurea oligomer and a cyclic carbonate compound to obtain a polyurethane urea composition having a repeating unit represented by formula I: —R2—U2—U1—U2—R2, wherein ??[formula I] U1 is a is an integer of 1 to 10000, each U2 is independently each R1 is independently a C1 to C20 alkyl group, a C3 to C20 cycloalkyl group, a C8 to C20 alkylaryl group, a polyether group having a weight-average molecular weight of 100 g/mol to 10000 g/mol, or a combination thereof, and each R2 is independently an aliphatic group, a cycloaliphatic group, an aromatic group substituted by an alkyl or an unsubstituted aromatic group, an oligo polyether group, an oligo polyester group, or a combination thereof.

Abstract: A self-assembly coating material including carbon particles and polymer shells is provided. The polymer shells respectively cover and are bonded to the carbon particles, wherein each polymer shell has both a first functional group for adsorbing on a surface of a substrate and a second functional group for self cross-linking. The first functional groups include thiol groups. The second functional groups include epoxy groups or carboxylic groups. The self-assembly coating material can be applied to a metal substrate to form a heat dissipation layer.

Abstract: A self-assembly coating material including carbon particles and polymer shells is provided. The polymer shells respectively cover and are bonded to the carbon particles, wherein each polymer shell has both a first functional group for adsorbing on a surface of a substrate and a second functional group for self cross-linking. The first functional groups include thiol groups. The second functional groups include epoxy groups or carboxylic groups. The self-assembly coating material can be applied to a metal substrate to form a heat dissipation layer.

Abstract: The disclosure provides a catalyst carrier, including a nano carbon material; and a polymer grafted on the nano carbon material, wherein the polymer has a repetitive unit comprising a phosphorous atom. The disclosure further provides a catalyst deposited on the catalyst carrier of the disclosure. The catalyst of the disclosure has high reactivity, and is easy to be recovered in C—C coupling reactions such as a Suzuki-Miyaura coupling reaction.

Abstract: The disclosure provides a catalyst carrier, including a nano carbon material; and a polymer grafted on the nano carbon material, wherein the polymer has a repetitive unit comprising a phosphorous atom. The disclosure further provides a catalyst deposited on the catalyst carrier of the disclosure. The catalyst of the disclosure has high reactivity, and is easy to be recovered in C—C coupling reactions such as a Suzuki-Miyaura coupling reaction.