-
公开(公告)号：US20240026099A1
公开(公告)日：2024-01-25
申请号：US18061843
申请日：2022-12-05
Applicant: Meta Platforms Technologies, LLC
Inventor： Hao Mei , Arman Boromand , Sheng Ye , Christopher Yuan Ting Liao , Rongzhi Huang , Andrew John Ouderkirk
CPC classification number: C08J5/18 , B29C48/022 , C08F10/02 , C08L23/06 , C09K5/14 , B29K2023/06 , B29C48/0011 , B29C48/0018 , B29C48/08
Abstract: A polymer thin film includes polyethylene having a molecular weight of at least approximately 250,000 g/mol, and has an elastic modulus of at least approximately 25 GPa, a tensile strength of at least approximately 0.8 GPa, and a thermal conductivity of at least approximately 5 W/mK. Formation of the polymer thin film may include forming a polymer solution from a crystallizable polyethylene and a liquid solvent, forming a gel from the polymer solution, forming a polymer thin film from the gel by calendering or solid state extrusion, and stretching the polymer thin film.
-
公开(公告)号：US11987677B2
公开(公告)日：2024-05-21
申请号：US17559655
申请日：2021-12-22
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Sheng Ye , Hao Mei , Cody Wayne Weyhrich , Arman Boromand , Andrew John Ouderkirk , Christopher Yuan Ting Liao , Emma Rae Mullen , Christopher Stipe , Nagi Hosni Elabbasi , Rui Jian
CPC classification number: C08J5/18 , C08L27/16 , C08J2427/16 , C08L27/04 , C08L27/12 , C08L27/14 , C08L2201/10 , C08L2203/16 , C08L2205/02
Abstract: A mechanically and piezoelectrically anisotropic polymer thin film is formed from a crystallizable polymer and an additive configured to interact with the polymer to facilitate chain alignment and, in some examples, create a higher crystalline content within the polymer thin film. The polymer thin film and its method of manufacture may be characterized by a bimodal molecular weight distribution where the molecular weight of the additive may be less than approximately 5% of the molecular weight of the crystallizable polymer. Example polymers may include vinylidene fluoride, trifluoroethylene, chlorotrifluoroethylene, hexafluoropropylene, and vinyl fluoride. Example additives may occupy up to approximately 60 wt. % of the polymer thin film. The polymer thin film may be characterized by a piezoelectric coefficient (d31) of at least approximately 5 pC/N or an electromechanical coupling factor (k31) of at least approximately 0.1.
-
公开(公告)号：US20240240007A1
公开(公告)日：2024-07-18
申请号：US18454499
申请日：2023-08-23
Applicant: Meta Platforms Technologies, LLC
Inventor： Sheng Ye , Abhirup Dutta , Hao Mei , Lafe Joseph Purvis, II , Arman Boromand , Jing Chen , Andrew John Ouderkirk , Kristy Alana Jost
CPC classification number: C08L27/16 , B29C71/0081 , B29C71/02 , B29C2071/022 , B29K2027/16
Abstract: A polymer article includes an at least partially disentangled polyvinylidene fluoride (PVDF) family member composition and is characterized by an elastic modulus of at least 4 GPa and an electromechanical coupling factor (k31) of at least 0.1 at room temperature. A method of manufacturing such a polymer article may include forming an at least partially disentangled polymer composition into a polymer thin film or fiber, applying a tensile stress to the polymer article in an amount effective to induce a stretch ratio of at least approximately 5 in the thin film or fiber, and applying an electric field across a thickness dimension of the polymer article. Annealing and poling steps may separately or simultaneously accompany and/or follow the act of stretching.
-
公开(公告)号：US20220348729A1
公开(公告)日：2022-11-03
申请号：US17559655
申请日：2021-12-22
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Sheng Ye , Hao Mei , Cody Wayne Weyhrich , Arman Boromand , Andrew John Ouderkirk , Christopher Yuan Ting Liao , Emma Rae Mullen , Christopher Stipe , Nagi Hosni Elabbasi , Rui Jian
IPC: C08J5/18
Abstract: A mechanically and piezoelectrically anisotropic polymer thin film is formed from a crystallizable polymer and an additive configured to interact with the polymer to facilitate chain alignment and, in some examples, create a higher crystalline content within the polymer thin film. The polymer thin film and its method of manufacture may be characterized by a bimodal molecular weight distribution where the molecular weight of the additive may be less than approximately 5% of the molecular weight of the crystallizable polymer. Example polymers may include vinylidene fluoride, trifluoroethylene, chlorotrifluoroethylene, hexafluoropropylene, and vinyl fluoride. Example additives may occupy up to approximately 60 wt. % of the polymer thin film. The polymer thin film may be characterized by a piezoelectric coefficient (d31) of at least approximately 5 pC/N or an electromechanical coupling factor (k31) of at least approximately 0.1.
-
5.发明授权公开(公告)号：US12031019B2
公开(公告)日：2024-07-09
申请号：US17554982
申请日：2021-12-17
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Sheng Ye , Andrew John Ouderkirk , Arman Boromand , Christopher Stipe , Hao Mei , Christopher Yuan Ting Liao
CPC classification number: C08L23/06 , C08K3/014 , C08K5/01 , C08L2207/066
Abstract: An optically clear, high strength, high modulus, and high thermal conductivity polyethylene thin film may be formed from a crystallizable polymer and an additive configured to interact with the crystallizable polymer to facilitate crystallite alignment and, in some examples, create a higher crystalline content within the polyethylene thin film. The polyethylene thin film may be characterized by a bimodal molecular weight distribution where the molecular weight of the additive may be less than approximately 5% of the molecular weight of the crystallizable polymer. Example crystallizable polymers may include high molecular weight polyethylene, high density polyethylene, and ultra-high molecular weight polyethylene. Example additives may include low molecular weight polyethylene and polyethylene oligomers. The polyethylene thin film may be characterized by a Young's modulus of at least approximately 10 GPa, a tensile strength of at least approximately 0.7 GPa, and a thermal conductivity of at least approximately 5 W/mK.
-
Patent Agency Ranking
公开(公告)号：US20240084121A1
公开(公告)日：2024-03-14
申请号：US18174920
申请日：2023-02-27
Applicant: Meta Platforms Technologies, LLC
Inventor： Sheng Ye , Jinghui Yang , Rui Jian , Hao Mei , Andrew John Ouderkirk , Christopher Yuan Ting Liao , Stephen Hsieh , Alexander Keener , Jonathan Robert Peterson
CPC classification number: C08L27/12 , B29C48/022 , H10N30/857 , B29K2027/12 , C08L2203/16 , C08L2205/16
Abstract: A mechanically and piezoelectrically anisotropic polymer article is formed from a crystallizable fluoropolymer and a nucleating agent. The polymer article may be a thin film or a fiber, for example. A crystalline phase may constitute at least approximately 50% of the polymer article. In certain examples, a fluoropolymer may include vinylidene fluoride, trifluoroethylene, chlorotrifluoroethylene, hexafluoropropylene, and vinyl fluoride. The polymer article may include up to approximately 10 wt. % of the nucleating agent. Such a polymer article is optically transparent, has an elastic modulus of at least approximately 3 GPa, and an electromechanical coupling factor (k31) of at least approximately 0.15.
-
公开(公告)号：US20230166481A1
公开(公告)日：2023-06-01
申请号：US17873578
申请日：2022-07-26
Applicant: Meta Platforms Technologies, LLC
Inventor： Arman Boromand , Andrew John Ouderkirk , Sheng Ye , Christopher Yuan Ting Liao , Rongzhi Huang , Hao Mei
IPC: B32B7/035 , C08J5/12 , G02B27/01 , B32B7/12 , B32B17/10 , B32B27/08 , B32B27/32 , B32B27/36 , B29C55/02
CPC classification number: B32B7/035 , C08J5/124 , C08J5/121 , G02B27/0172 , B32B7/12 , B32B17/10 , B32B27/08 , B32B27/32 , B32B27/365 , B32B27/325 , B29C55/023 , C08J2323/06 , G02B2027/0178 , B32B2250/40 , B32B2255/10 , B32B2255/26 , B32B2307/514 , B32B2264/0257 , B32B2307/412 , B32B2307/732 , B32B2307/54 , B32B2315/08 , B32B2323/043 , B32B2369/00 , B32B2457/20 , B29K2023/0683
Abstract: A polymer multilayer includes two or more laminated layers of ultra-drawn, ultra-high molecular weight polyethylene or high density polyethylene. A transparent laminated structure may include such a polymer multilayer disposed between a pair of transparent substrates. The polymer multilayer may be configured to induce a compressive stress in a near surface region of each transparent substrate, which may improve the toughness and fracture resistance of the laminated structure. A photothermal dye may be incorporated into the polymer matrix and the compressive stresses may be achieved using photothermal actuation of the dye-containing polyethylene layers.
-
公开(公告)号：US20230279585A1
公开(公告)日：2023-09-07
申请号：US18149596
申请日：2023-01-03
Applicant: Meta Platforms Technologies, LLC
Inventor： Sheng Ye , Jing Chen , Hao Mei , Andrew John Ouderkirk , Arman Boromand , Kristy Alana Jost , Nagi Hosni Elabbasi , Jonathan Robert Peterson , Christopher Yuan Ting Liao
CPC classification number: D01D5/0038 , C08J5/18 , G02B27/017 , C08J2327/12 , G02B2027/0178
Abstract: Mechanically and piezoelectrically anisotropic polymer fibers may be formed by spinning a polymer solution or gel that includes a high molecular weight crystallizable polymer and a liquid solvent. The solvent may be configured to interact with the polymer to facilitate chain alignment and, in some examples, create a higher crystalline content within the spun fibers. The polymer solution may also include a low molecular weight additive. The high and low molecular weight polymers may each be characterized by a bimodal molecular weight distribution where the molecular weight of the additive is less than the molecular weight of the crystallizable polymer. The polymer(s) and the additive(s) may be independently selected from vinylidene fluoride, trifluoroethylene, chlorotrifluoroethylene, hexafluoropropene, vinyl fluoride, etc. The spun fibers may be oriented, annealed, poled, and woven or laminated to form a polymer thin film having a high elastic modulus and a high electromechanical coupling factor.
-
9.发明申请公开(公告)号：US20220348747A1
公开(公告)日：2022-11-03
申请号：US17554982
申请日：2021-12-17
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Sheng Ye , Andrew John Ouderkirk , Arman Boromand , Christopher Stipe , Hao Mei , Christopher Yuan Ting Liao
Abstract: An optically clear, high strength, high modulus, and high thermal conductivity polyethylene thin film may be formed from a crystallizable polymer and an additive configured to interact with the crystallizable polymer to facilitate crystallite alignment and, in some examples, create a higher crystalline content within the polyethylene thin film. The polyethylene thin film may be characterized by a bimodal molecular weight distribution where the molecular weight of the additive may be less than approximately 5% of the molecular weight of the crystallizable polymer. Example crystallizable polymers may include high molecular weight polyethylene, high density polyethylene, and ultra-high molecular weight polyethylene. Example additives may include low molecular weight polyethylene and polyethylene oligomers. The polyethylene thin film may be characterized by a Young's modulus of at least approximately 10 GPa, a tensile strength of at least approximately 0.7 GPa, and a thermal conductivity of at least approximately 5 W/mK.
-
公开(公告)号：US20220348730A1
公开(公告)日：2022-11-03
申请号：US17582574
申请日：2022-01-24
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Sheng Ye , Arman Boromand , Christopher Yuan Ting Liao , Laura Cressman , Emma Rae Mullen , Andrew John Ouderkirk , Hao Mei , Cody Wayne Weyhrich , Rui Jian
IPC: C08J5/18 , H01L41/193 , H01L41/333 , H01L41/08
Abstract: A polymer thin film includes polyvinylidene fluoride (PVDF) and is characterized by a Young's modulus along an in-plane dimension of at least 4 GPa, an electromechanical coupling factor (k31) of at least 0.1 at room temperature. A method of manufacturing such a polymer thin film may include forming a polymer composition into a polymer thin film, applying a tensile stress to the polymer thin film along at least one in-plane direction and in an amount effective to induce a stretch ratio of at least approximately 5 in the polymer thin film, and applying an electric field across a thickness dimension of the polymer thin film. Annealing and poling steps may separately or simultaneously accompany and/or follow the act of stretching of the polymer thin film.
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.016 seconds)
