公开(公告)号：US20230138169A1

公开(公告)日：2023-05-04

申请号：US17799338

申请日：2021-02-16

Applicant: NanoXplore Inc.

Inventor： Scott Murray ,  Allan James ,  Liya Wang

IPC: C08K3/04 ,  C08J9/00

Abstract: Graphene-modified polymeric foam materials are provided that are amenable to conventional foams to yield articles with superior properties relative to like articles absent the graphene cell modifier. Graphene-based cell modifiers are incorporated in the polymer before or during the foaming process to not only improve the mechanical, thermal, electrical, fire retardant, or barrier properties of the polymer matrix itself, but also help modify the size, density, and morphology of cells in the foam, thereby tailoring the properties of the final foam articles. The graphene-modified polymeric foam materials may be utilized for the manufacturing of articles for mechanical, thermal, noise reduction, or sound absorption applications. The graphene-modified foams and articles made thereof have the advantages higher mechanical strength, better thermal stability, and better sound absorption properties as compared to the conventional polymeric foams such as materials made by copolymer polyol.

公开(公告)号：US12286353B2

公开(公告)日：2025-04-29

申请号：US18601495

申请日：2024-03-11

Applicant: NanoXplore inc.

Inventor： Leroy Magwood ,  Scott Murray ,  Trent Hinze

IPC: C01B32/19 ,  B29C45/00

Abstract: A process for in situ functionalization of graphene including placing a graphitic precursor in an exfoliation cannister with exfoliation media; creating an inert atmosphere in the exfoliation cannister; exfoliating the graphitic precursor to form graphene having carboxyl moieties; and reacting the carboxyl moieties in the exfoliation cannister under conditions, such as a temperature of between 260 and 500° C., and in the presence of a substance to chemically reduce or react the carboxyl moieties during the exfoliating to produce hydrophobic graphene. Additionally, a process of molding an article including intermixing a thermoplastic in a molten state with hydrophobic graphene produced by an in situ functionalization process to form a dispersion of the hydrophobic graphene in the thermoplastic; injecting a melt of the dispersion of the hydrophobic graphene in the thermoplastic into a mold having a cavity complementary to the article; and allowing the melt to cool to form the article.