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    • 2. 发明申请
    • POROUS POLYUREA MATERIAL AND METHODS FOR PREPARING THE SAME
    • 多孔聚氨酯材料及其制备方法
    • US20120095123A1
    • 2012-04-19
    • US13378199
    • 2010-07-26
    • Ji-Woong ParkSu-Young MoonJae-Sung Bae
    • Ji-Woong ParkSu-Young MoonJae-Sung Bae
    • C08G18/76C08G18/72
    • C08G18/3243C08G2101/00C08J9/28C08J2201/0502C08J2205/02C08J2375/04
    • The present invention relates to a porous polyurea material and a method for preparing the same. The porous polyurea material may be prepared by polymerization and crosslinking of tetra(4-aminophenyl)methane with a monomer two to four isocyanate (—NCO) groups. The method includes: mixing an organic solution of tetra(4-aminophenyl)methane with an organic solution of a monomer having two to four isocyanate groups; reacting the mixed solution under a nitrogen atmosphere; and drying a semi-solid or solid material formed by gelation of the reaction solution, or adding the reaction solution to a non-solvent before gelation of the reaction solution to form a precipitate, followed by drying, or applying the reaction solution to a substrate before gelation of the reaction solution, followed by drying. According to the present invention, the introduction of the monomer having a tetrahedral structure can impart good chemical resistance, heat resistance and durability to the porous polyurea material.
    • 本发明涉及一种多孔聚脲材料及其制备方法。 多孔聚脲材料可以通过四(4-氨基苯基)甲烷与单体二至四个异氰酸酯(-NCO)基团的聚合和交联来制备。 该方法包括:将四(4-氨基苯基)甲烷的有机溶液与具有2-4个异氰酸酯基团的单体的有机溶液混合; 在氮气氛下使混合溶液反应; 并干燥通过反应溶液的凝胶化形成的半固体或固体物质,或在将反应溶液凝胶化之前将反应溶液加入到非溶剂中以形成沉淀物,然后干燥,或将反应溶液施用于基材 在反应溶液凝胶化之前,然后干燥。 根据本发明,引入具有四面体结构的单体可以赋予多孔聚脲材料良好的耐化学性,耐热性和耐久性。
    • 5. 发明授权
    • Porous polyurea material and methods for preparing the same
    • 多孔聚脲材料及其制备方法
    • US08815967B2
    • 2014-08-26
    • US13378199
    • 2010-07-26
    • Ji-Woong ParkSu-Young MoonJae-Sung Bae
    • Ji-Woong ParkSu-Young MoonJae-Sung Bae
    • C08J9/00C08G18/32C08G18/76C08G18/77
    • C08G18/3243C08G2101/00C08J9/28C08J2201/0502C08J2205/02C08J2375/04
    • A porous polyurea material may be prepared by polymerization and crosslinking of tetra(4-aminophenyl)methane or tetra(4-aminophenyl)silane with a monomer having two to four isocyanate (—NCO) groups, or by polymerization and crosslinking of tetra(4-isocyanatophenyl)methane or tetra(4-isocyanatophenyl)silane with a monomer having two to four amino groups. The method includes: mixing an organic solution of tetra(4-aminophenyl)methane with an organic solution of a monomer having two to four isocyanate groups; reacting the mixed solution under a nitrogen atmosphere; and drying a semi-solid or solid material formed by gelation of the reaction solution, or adding the reaction solution to a non-solvent before gelation of the reaction solution to form a precipitate, followed by drying, or applying the reaction solution to a substrate before gelation of the reaction solution, followed by drying. The introduction of the monomer having a tetrahedral structure can impart good chemical resistance, heat resistance and durability to the porous polyurea material.
    • 多孔聚脲材料可以通过四(4-氨基苯基)甲烷或四(4-氨基苯基)硅烷与具有2-4个异氰酸酯(-NCO)基团的单体的聚合和交联或通过四 - 异氰酸基苯基)甲烷或四(4-异氰酸基苯基)硅烷与具有2-4个氨基的单体。 该方法包括:将四(4-氨基苯基)甲烷的有机溶液与具有2-4个异氰酸酯基团的单体的有机溶液混合; 在氮气氛下使混合溶液反应; 并干燥通过反应溶液的凝胶化形成的半固体或固体物质,或在将反应溶液凝胶化之前将反应溶液加入到非溶剂中以形成沉淀物,然后干燥,或将反应溶液施用于底物 在反应溶液凝胶化之前,然后干燥。 引入具有四面体结构的单体可赋予多孔聚脲材料良好的耐化学性,耐热性和耐久性。
    • 6. 发明申请
    • STATIC MIXER FOR MIXING UREA AQUEOUS SOLUTION AND ENGINE EXHAUST GAS
    • 用于混合尿素水溶液和发动机排气的静态混合器
    • US20130104531A1
    • 2013-05-02
    • US13808759
    • 2011-07-07
    • Young Jin ChoJi Woong Park
    • Young Jin ChoJi Woong Park
    • F01N3/24
    • F01N3/24B01F3/04049B01F5/0473B01F5/0616B01F5/0618F01N3/2066F01N2240/20F01N2610/02
    • The present disclosure relates to a static mixer for mixing a urea solution and engine exhaust gas. The static mixer includes: an external tube including one end portion connected to an exhaust manifold of a diesel engine, the other end portion connected to an SCR (Selective Catalytic Reduction), and a part with which a urea solution injection adaptor is provided; an internal tube installed inside the external tube so as to have a constant gap between at least a part of an outer wall surface and an inner wall surface of the external tube; and a channel unit comprising a plurality of guiding channels provided inside the internal tube in a longitudinal direction, and having an inlet portion facing a lower end portion of the urea solution injector adaptor. The present disclosure may make the exhaust gas and the urea solution before passing through the SCR pass through the inlet portion and the plurality of guiding channels of the channel unit to form fine and even mixed gas, thereby largely decreasing an amount of nitride oxide (NOx) discharged to the air by improving a catalytic reduction reaction ratio in the SCR.
    • 本公开涉及一种用于混合尿素溶液和发动机废气的静态混合器。 静态混合器包括:外管,其包括连接到柴油发动机的排气歧管的一个端部,与SCR(选择性催化还原)连接的另一端部分和设置有尿素溶液注入适配器的部分; 内管,其安装在所述外管的内部,以便在外壁表面的至少一部分和所述外管的内壁表面之间具有恒定的间隙; 以及通道单元,其包括沿纵向设置在所述内管内部的多个引导通道,并且具有面向所述尿素溶液注射器适配器的下端部的入口部。 本公开可以使排气和尿素溶液在通过SCR之前通过入口部分和通道单元的多个引导通道,以形成精细且均匀的混合气体,从而大大减少氮氧化物(NOx )通过提高SCR中的催化还原反应比而排放到空气中。