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公开(公告)号：US20210352941A1
公开(公告)日：2021-11-18
申请号：US17386417
申请日：2021-07-27
Inventor： Xu Li , Yu Yuan Chieng , Siew Yee Wong , Suxi Wang , Jen-Yi Huang , Weibiao Zhou
Abstract: The invention is directed to a nanostructured composite material comprising a mixture of at least one metal particle such as iron and a carbon material from biomass such as D-glucose, D-glucosamine hydrochloride or α-cyclodextrin. The invention is also directed to a composition comprising the composite material comprising the composite material and an inorganic salt, and a method for synthesizing the composite material comprising immersing the carbon material into a solution of metal ions, drying the impregnated carbon particle and subjecting the impregnated carbon particle to a carbothermal reduction process. The nanostructured composite material is useful as an oxygen scavenging layer in a multi-layer film which comprises the oxygen scavenging layer and an oxygen barrier layer that retards the permeation of oxygen from an external environment.
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公开(公告)号：US20210316271A1
公开(公告)日：2021-10-14
申请号：US17267681
申请日：2019-08-08
Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
Inventor： Xu Li , Chin Chong Yap , Jiating He , Siew Yee Wong
IPC: B01J20/02 , B01J20/20 , B01J20/12 , B01J20/26 , B01J20/28 , B01J20/30 , A23L3/3436 , B65D81/26 , B65D65/42
Abstract: There is provided a coating formulation comprising an inorganic oxygen scavenger, a surfactant, an activator, a hydrophilic agent, optionally an additive and a plurality of monomers capable of forming a polymeric matrix, and a method to prepare the same. There is also provided an article comprising an inorganic scavenger, a surfactant, an activator, a hydrophilic agent and optionally an additive dispersed within a polymeric matrix, and a method to prepare the same.
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公开(公告)号：US11134707B2
公开(公告)日：2021-10-05
申请号：US15576696
申请日：2016-05-23
Inventor： Xu Li , Yu Yuan Chieng , Siew Yee Wong , Suxi Wang , Jen-Yi Huang , Weibiao Zhou
Abstract: The invention is directed to a nanostructured composite material comprising a mixture of at least one metal particle such as iron and a carbon material from biomass such as D-glucose, D-glucosamine hydrochloride or a-cyclodextrin. The invention is also directed to a composition comprising the composite material comprising the composite material and an inorganic salt, and a method for synthesizing the composite material comprising immersing the carbon material into a solution of metal ions, drying the impregnated carbon particle and subjecting the impregnated carbon particle to a carbothermal reduction process. The nanostructured composite material is useful as an oxygen scavenging layer in a multi-layer film which comprises the oxygen scavenging layer and an oxygen barrier layer that retards the permeation of oxygen from an external environment.
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公开(公告)号：US10998550B2
公开(公告)日：2021-05-04
申请号：US16069707
申请日：2017-01-16
Applicant: Agency for Science, Technology and Research
Inventor： Suxi Wang , Xu Li , Andy Hor , Zhongxing Zhang , Kia Jia Benny Chew
IPC: H01M4/587 , D01D5/00 , D01F1/10 , D01F9/22 , B82Y30/00 , D04H3/002 , D04H3/03 , H01M10/0525 , H01M4/62 , H01M4/02
Abstract: According to the present disclosure, a method of fabricating a metal-carbon fibrous structure is provided. The method comprises the steps of: (a) forming a fibrous support structure comprising composite nanocrystals and polymeric fibers, wherein each of the composite nanocrystals comprises metal ions connected by organic ligands; (b) growing the composite nanocrystals on the fibrous support structure; and (c) subjecting the fibrous support structure of step (b) to carbonization to form the metal-carbon fibrous structure, wherein the metal-carbon fibrous structure comprises metal nanoparticles derived from the composite nanocrystals comprising metal organic framework (MOF), particularly zeolitic imidazolate framework (ZIF). A metal-carbon fibrous structure comprising carbon based fibers arranged to form a porous network and the carbon based fibers are doped with metal nanoparticles, wherein the carbon based fibers have surfaces which comprise graphitic carbon, is also disclosed herein.
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Patent Agency Ranking
公开(公告)号：US20210046445A1
公开(公告)日：2021-02-18
申请号：US16994216
申请日：2020-08-14
Applicant: Agency for Science, Technology and Research
Abstract: A method of producing a porous carbon composite fibrous mats formed of a network of carbon fibers incorporated with porous carbon particles. The method includes electrospinning a polymer solution to form a porous layer of polymeric fibers and the polymeric fibers are doped with a precursor of conductive metal particles, wherein the polymer solution includes a polymer and the precursor of the conductive metal particles, electrospraying a metal organic framework suspension onto the porous layer of polymeric fibers, wherein the metal organic framework suspension includes metal organic framework particles, repeating the electrospinning and electrospraying in an alternating manner to form a porous network of polymeric fibers incorporated with the metal organic framework particles, and heating the porous network of polymeric fibers incorporated with the metal organic framework particles to form the porous carbon composite fibrous mats. The porous carbon composite fibrous mats and its applications thereof are also disclosed herein.
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公开(公告)号：US20200002453A1
公开(公告)日：2020-01-02
申请号：US16493555
申请日：2018-03-14
Applicant: Agency for Science, Technology and Research
Inventor： Xu Li , Yu Zhang , Ming Yan Tan , Siew Yee Wong , Xi Kui Zhang
IPC: C08F220/28 , C08F2/18 , C08F292/00 , C08F2/44 , C08K3/34 , C08K5/5425 , C08K5/14 , C08K9/04
Abstract: The present disclosure relates to a clay-polyacrylate composite comprising layers of clay intercalated with polyacrylate, wherein the layers of clay comprises at least one organosilane coupling agent comprising an acrylate moiety; and wherein the polyacrylate comprises a first acrylate monomer and a second acrylate monomer having different solubility. A surfactant-free method of synthesizing the said clay-polyacrylate composite and a method for coating are also provided. In a preferred embodiment, the first acrylate monomer is a hydrophilic acrylate monomer, e.g. 2-hydroxyethyl acrylate, and the second acrylate monomer is a hydrophobic acrylate monomer, e.g. 2-ethylhexyl acrylate. The clay-acrylate composite can be used for forming a barrier coating, which exhibits low water and low oxygen permeability.
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公开(公告)号：US10233297B2
公开(公告)日：2019-03-19
申请号：US15313091
申请日：2015-05-21
Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
Inventor： Xu Li , Yu Yuan Chieng , Siew Yee Wong , Xikui Zhang
IPC: C08F2/44 , C08F20/06 , C08J7/04 , C09D4/06 , C09D133/02
Abstract: This invention relates to a a one-step process for making a polymer composite suspension for coating plastic films characterized in that a first polymer is synthesized in-situ optionally in the presence of other polymers and in the presence of clay. Preferably the polymer composite suspension comprises a) 1.0 to 11.0 wt % of clay or silane modified clay, b) 0.1 to 10.0 wt % of poly (acrylic acid), which is a copolymer of acrylic acid (AA) with at least one other monomer selected from 2-ethylhexyl acrylate (EHA), β-carboxyethyl acrylate (β-CEA), methacrylamidoethyl ethylene urea (WAM II) and ethoxylated behenyl methacrylate (β-EM), c) 1.0 to 15.0 wt % of other polymers, preferably poly (vinyl alcohol) and d) 70 to 97 wt % of water or mixture of water with 2-propanol. The coating films made from the suspensions show good barrier capabilities against water vapor and oxygen can be used to make barrier layers on or within plastic films for packaging applications. The invention also relates to methods for making silane modified clay usable in the process for making the suspensions.
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公开(公告)号：US10181618B2
公开(公告)日：2019-01-15
申请号：US15329829
申请日：2015-07-29
Inventor： Aled Deakin Roberts , Suxi Wang , Haifei Zhang , Xu Li
IPC: H01M4/583 , H01M10/0525 , B01J20/20 , C01B31/02 , H01G11/34 , B01J20/30 , H01M8/0234 , C01B32/00 , C01B32/05 , H01M4/587 , H01M10/052 , H01M4/92 , H01G11/26 , H01G11/86 , H01M4/02
Abstract: A method of preparing a porous carbon material is provided. The method comprises a) freezing a liquid mixture comprising a polymer suspended or dissolved in a solvent to form a frozen mixture; b) removing the solvent from the frozen mixture to form a porous frozen mixture; and c) pyrolyzing the porous frozen mixture to obtain the porous carbon material. A porous carbon material prepared using the method, and uses of the porous carbon material are also provided.
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公开(公告)号：US20160111723A1
公开(公告)日：2016-04-21
申请号：US14890410
申请日：2014-05-12
Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
Inventor： Xu Li , Chao Bin He , Suxi Wang , Siew Yee Wong , Shilin Chen
IPC: H01M4/587 , D01D5/00 , H01M4/04 , D04H1/728 , D04H1/4242
CPC classification number: H01M4/587 , D01D5/003 , D01F9/17 , D01F9/24 , D01F11/128 , D04H1/4242 , D04H1/728 , D10B2101/12 , D10B2101/122 , D10B2401/16 , H01M4/0471 , H01M4/133 , H01M4/1393 , H01M4/364 , H01M4/622 , H01M2004/027
Abstract: There is provided a conductive fibrous material comprising a plurality of carbonaceous fibers, wherein each carbonaceous fiber is fused to at least one other fiber. The carbonaceous fibers may be fused at fiber-to-fiber contact points by a polymer. The process of making the conductive fibrous material comprises mixing a phenolic polymer with a second polymer to form a polymer solution, preparing phenolic fibers having nano- or micro-scale diameters by electrospinning the polymer solution, and subsequent carbonization of the obtained phenolic fibers, thereby generating carbonaceous fibers, wherein each carbonaceous fiber is fused to at least one other fiber. The conductive fibrous material may be useful in electrode materials for energy storage devices.
Abstract translation: 提供了包含多个碳质纤维的导电纤维材料，其中每个碳质纤维与至少一种其它纤维融合。 碳纤维可以通过聚合物在纤维 - 纤维接触点处熔融。 制造导电纤维材料的方法包括将酚类聚合物与第二聚合物混合以形成聚合物溶液，通过静电纺丝聚合物溶液制备具有纳米级或微尺度直径的酚醛纤维，并随后碳化得到的酚醛纤维 产生含碳纤维，其中每个碳质纤维与至少一种其它纤维融合。 导电纤维材料可用于储能装置的电极材料中。
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