IN SITU EXFOLIATION METHOD TO FABRICATE A GRAPHENE-REINFORCED POLYMER MATRIX COMPOSITE

• Main Authors: KEAR BERNARD, TSE STEPHE, HENDRIX JUSTIN, CHIU GORDON, NOSKER THOMAS, LYNCH JENNIFER
• Format: Patent
• Language: English; Korean
• Published: 21.04.2021
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; NON-METALLIC ELEMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

그래핀 강화된 고분자 복합체를 제조하는 방법이 개시되어 있다. 본 방법은 용융된 열가소성 고분자 상에 흑연 마이크로 분말을 분산시키고; 상기 용융된 고분자 상에 전단 변형(shear strain) 이벤트(event)를 연속(succession) 가함으로써, 상기 용융된 고분자 상이 상기의 각 이벤트마다 상기 흑연을 연속적으로 박리하여 적어도 50%의 흑연이 박리되도록 하여, c-축(c-axis) 방향으로 50 나노미터 두께 이하의 단일-층 또는 다중-층 그래핀 나노입자가 상기 용융된 고분자 상에 분산된 것을 형성토록 하는 단계를 포함한다. A method for forming a graphene-reinforced polymer matrix composite is disclosed. The method includes distributing graphite microparticles into a molten thermoplastic polymer phase; and applying a succession of shear strain events to the molten polymer phase so that the molten polymer phase exfoliates the graphite successively with each event until at least 50% of the graphite is exfoliated to form a distribution in the molten polymer phase of single- and multilayer graphene nanoparticles less than 50 nanometers thick along the c-axis direction.