GRAPHITE SHEET AND PRODUCTION METHOD THEREFOR

• Main Authors: PARK KI RYUN, SEO JUNG DOO, PARK JONG HWI, OH JUN ROK, KYUN MYUNG-OK, BAEK JONGGAB, KIM JUNG-GYU
• Format: Patent
• Language: English; Japanese
• Published: 16.05.2019
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; COMPOUNDS THEREOF; CONCRETE; INORGANIC CHEMISTRY; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIME, MAGNESIA; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; REFRACTORIES; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE

To provide a graphite sheet that has high ratio of thermal diffusivity in the horizontal/vertical direction by decreasing thermal diffusivity in the vertical direction and increasing thermal diffusivity in the horizontal direction, and a production method therefor.SOLUTION: A graphite sheet is obtained by subjecting heating treatment to a base substance containing natural fiber, synthetic fiber, or paper, and a coating layer provided on a single side or double sides of the base substance and including at least one kind selected from the group consisting of polymer, carbonization polymer, and graphite. The graphite sheet simultaneously has excellent thermal conductivity in the horizontal and vertical direction and excellent flex resistance, can be manufactured at low production cost, and thus has economical benefit.SELECTED DRAWING: Figure 2 【課題】垂直方向の熱拡散率を減少させ、水平方向の熱拡散率を増加させることにより、水平／垂直方向の熱拡散率の比率が高い黒鉛シート、およびその製造方法を提供することである。【解決手段】天然繊維、合成繊維、または紙を含む基体、および前記基体の片面または両面上に設けられ、ポリマー、炭化ポリマー、および黒鉛からなる群から選択される少なくとも１種を含む被覆層を熱処理することにより得られる黒鉛シートは、水平および垂直方向の優れた熱伝導度と、優れた耐屈曲性とを同時に有し、低製造コストで製造することができ、それにより経済的利益を有する。【選択図】図２