WATER-REPELLENT ARTICLE AND METHOD OF MANUFACTURING THE SAME

• Main Authors: YAGI SHINSUKE, KATO NORIHIRO, MURATA KEISUKE
• Format: Patent
• Language: English; Japanese
• Published: 14.12.2017
• Subjects: ADHESIVES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; GLASS; INKS; JOINING GLASS TO GLASS OR OTHER MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MINERAL OR SLAG WOOL; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide a water-repellent article which includes a substrate, a first coating film containing silica fine particles on the substrate, and a second coating film containing a water-repellent compound on the first coating film and achieves both super water repellency and wear resistance, and a method of manufacturing the water-repellent article.SOLUTION: The water-repellent article includes a substrate, a first coating film on the substrate, and a second coating film on the first coating film. The first coating film contains a sintered compact of silica fine particles and an alkali metal compound and has a degree of sintering represented by formula [1] of 0.7-0.9. The second coating film contains at least one compound selected from the group consisting of a fluoroalkylsilane compound, a perfluoropolyether silane compound, an alkylsilane compound, a silazane compound, and a silicone compound.SELECTED DRAWING: Figure 1 【課題】本発明は、基材と、該基材上のシリカ微粒子を含む被膜と、該被膜上に撥水性化合物を含む被膜とを有する撥水性物品において、超撥水性と耐摩耗性を両立させた撥水性物品及びその製造方法を提供することを課題とする。【解決手段】基材と、該基材上の第１被膜と、該第１被膜上の第２被膜とを有する撥水性物品であって、該第１被膜が、シリカ微粒子とアルカリ金属化合物との焼結体を含み、式［１］で示す焼結度が０．７〜０．９の被膜であり、該第２被膜が、フルオロアルキルシラン系化合物、パーフルオロポリエーテルシラン系化合物、アルキルシラン系化合物、シラザン化合物及びシリコーン化合物からなる群から選ばれる少なくとも１つの化合物を含む被膜であることを特徴とする撥水性物品。【選択図】図１