POLYIMIDE POWDER WITH IMPROVED CONDUCTIVITY USING GRAPHENE AND MANUFACTURING METHOD THEREOF

• Main Authors: LEE HO SUNG, LEE IK SANG, YANG MIN SEOK
• Format: Patent
• Language: English; Korean
• Published: 07.06.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The present invention relates to polyimide powder and a manufacturing method thereof. The present invention provides polyimide powder capable of preventing static electricity by revealing electrical conductivity with a minimum decrease in tensile strength and elongation by polymerizing diamine monomer and dianhydride monomer with graphene. The manufacturing method of the polyimide powder of the present invention comprises a step of preparing a polyamic acid solution, a step of heating the polyamic acid solution prepare a polyimide mixed solution, and a step of filtering and drying precipitate in the mixed solution. 본 발명은 폴리이미드 분말 및 이의 제조방법에 관한 것으로, 본 발명에 따른 폴리이미드 분말은 디아민 단량체 및 디안하이드라이드 단량체에 그래핀을 이용하여 중합함으로써, 인장강도와 신율의 저하를 최소화하면서도 전기전도성을 발현하여 대전 방지가 가능한 폴리이미드 분말을 제공할 수 있다.