REINFORCEMENT METHOD OF VEHICLE EXTERIOR MATERIAL AND VEHICLE REINFORCEMENT EXTERIOR MATERIAL

• Main Authors: NISHIURA KOICHI, SUGIURA HIROYUKI
• Format: Patent
• Language: English; Japanese
• Published: 19.01.2015
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FORVEHICLES; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILARDEVICES FOR VEHICLES

PROBLEM TO BE SOLVED: To provide a reinforcement method of vehicle exterior material and a vehicle reinforcement exterior material capable of securing impact resistance, rigidity, vibration insulation property and the like even a metal reinforcement member is eliminated which was required conventionally, and capable of achieving light weight and cost reduction.SOLUTION: Isocyanate and a hardening agent including an amino group which are supplied from individual material supply hoses respectively are coated by a crash mix spray gun to an inner surface of a vehicle exterior material, and a polyurea resin reinforcement layer is formed along the inner surface. When the hardening agent is a polyamine and strain (extension) is 2%, the polyurea resin having tensile stress of 10 MPa or more, and breakage stress of 20 MPa or more is used. 【課題】ボディ、ドア、バンパー等の車両用外装材に対して、従来必要であった金属製補強部材を省略しても、耐衝撃性、剛性、防振性等を付与することが可能であるとともに、全体として軽量化、コストダウンを図ることが可能な車両用外装材の補強方法及び車両用補強外装材を提供する。【解決手段】車両用外装材の内面に、それぞれ独立した原料供給ホースから供給されたイソシアネートと、アミノ基を有する硬化剤とを衝突混合スプレーガンで塗布し、該内面に沿ってポリウレア樹脂の補強層を形成する。硬化剤がポリアミンであり、ひずみ（伸び）が２％のとき引張り応力が１０ＭＰａ以上、破断応力が２０ＭＰａ以上であるポリウレア樹脂を用いる。【選択図】 図５