摘要:
A damping material and a damping metal sheet that have excellent damping performance are provided. (1) A damping material including at least one type of polymeric material, wherein the polymeric material has a sea-island structure, the loss factor tan δI of a polymeric material constituting the island phase of the sea-island structure is larger than the loss factor tan δM of a polymeric material constituting the sea phase of the sea-island structure, and the ratio of the elastic modulus of the polymeric material constituting the island phase to the elastic modulus of the polymeric material constituting the sea phase is in the range of 0.1 to 2; (2) The damping material wherein gas bubbles are present in the polymeric material constituting the sea phase; (3) The damping material wherein the shear modulus μI of the polymeric material constituting the island phase is in the range of 5×105 to 4×109 Pa; (4) The damping material wherein the loss factor tan δI of the polymeric material constituting the island phase is in the range of 0.1 to 10; (5) A damping metal sheet including a damping structure in which the above damping material is bonded on a metal sheet; and the like.
摘要:
Provided is a lightweight heat ray shield cover, such as a heat insulator, which has a three-dimensional shape and excellent shielding characteristics. The heat ray shield cover is a cover which is disposed near a heat source (26) such as an engine exhaust pipe and blocks the heat ray from the heat source, the cover being formed of a shaped composite in which aluminum alloy plates (2a, 2b) are layered on both the surfaces of a core foam resin (3b), respectively. The surface of one (2a) of the aluminum alloy plates in the shaped composite is provided to face the heat source (26).
摘要:
A method for producing a metal-resin composite includes a coating step, an assembling step, and a heating step. The coating step coats at least part of the outer periphery of a solid metal first member with a foaming resin and a non-foaming resin. The assembling step disposes the first member within a hollow metal second member. The heating step heats an assembly of the second member within which the first member coated with the foaming resin and the non-foaming resin with the axes of the first member and the second member extending in the horizontal direction, and thus foams the foaming resin between the first member and the second member.
摘要:
The present invention provides a foamed resin laminate sound insulation board capable of exhibiting sound proofing performance, which is free from restrictions of shape, applicable place and weight, thinned as the whole laminated plate to enhance plastic workability such as press work, and provided with sufficient vibration damping performance in a final using state after heating foaming process. This foamed resin laminate sound insulation board 1 is a laminated plate comprising at least an unfoamed foamable resin 3a to be foamed at a foaming temperature by heating and a hard plate 2.
摘要:
A method for producing a metal-resin composite includes a coating step, an assembling step, and a heating step. The coating step coats at least part of the outer periphery of a solid metal first member with a foaming resin and a non-foaming resin. The assembling step disposes the first member within a hollow metal second member. The heating step heats an assembly of the second member within which the first member coated with the foaming resin and the non-foaming resin with the axes of the first member and the second member extending in the horizontal direction, and thus foams the foaming resin between the first member and the second member.
摘要:
A laminated plate includes two alloy plates laminated on respective sides of a core polypropylene-based resin in which the resin has a foamable property. Advantageously, the aluminum alloy plates are composed of temper treated material selected from an O material, an H22 material to an H24 material, an H32 material to an H34 material and a T4 material.
摘要:
Provided in the present invention is a laminated plate in which a thin aluminum alloy plate having a remarkably lowered forming limit is laminated on each of the two sides of a core polypropylene based resin having foamable property which has inferior formability and shape stability, and which is able to be subjected to forming and is excellent in shape stability after this forming. A laminated plate 1 according to the present invention is one in which aluminum alloy plates 2a and 2b are laminated on each of the two sides of a core polypropylene based resin 3a having foamable property, and after forming, the core polypropylene based resin 3a having foamable property is foamed by heating, thereby forming a composite formed article. A plate thickness of this plated plate 1 is thin. Also, the aluminum alloy plates 2a and 2b and the core polypropylene based resin 3a having foamable property which constitute this laminated plate are each constituted so as to have a thin plate thickness. Furthermore, the aluminum alloy plates 2a and 2b are a temper treated material selected from an O material, an H22 material to an H24 material, an H32 material to an H34 material and a T4 material.
摘要:
The present invention provides a vibration damping shaped aluminum extrusion having a weight reduction effect and a high damping effect. The present invention relates to a vibration damping shaped aluminum extrusion 1B including a pair of face plates 4 and 5 which face each other and a plurality of ribs 6 connecting the face plates 4 and 5, wherein a damping material 3 is provided at least on the central part of the rib 6 in an inner surface of a hollow part 7 or 8 formed by the face plate 4 or 5 and the rib 6. A positioning recess 11 or a positioning protrusion 12 may be formed so that a damping material 3 is provided on the central part of the face plate 5 in an inner surface of the hollow part 7.
摘要:
A double-walled damping structure includes two parallel face plates 1 and 2, a plurality of ribs 3 and 4 extending in the same direction to connect the two parallel face plates 1 and 2, wherein in a section taken perpendicularly to the direction of extension of the ribs 3 and 4, all or most of the holes defined by the adjacent two ribs and the face plates are trapezoidal. The structure less transmits vibration, and is capable of further increasing a damping effect when a damping material is attached. A double-walled sound insulation structure includes two parallel face plates 1 and 2 having a same thickness, a plurality of vertical ribs 3 extending in parallel with an equal pitch to connect the two parallel face plates 1 and 2, wherein assuming that the Young's modulus, density and thickness of each of the face plates are E, &rgr;, and t, respectively, and the pitch of the ribs is 1, the following equation (1) is satisfied: [Formula 1] 250 ≤ k 2 4 π · t l 2 · ( E / 3 ρ ) 1 / 2 ≤ 5000 (wherein k = 4.72 ) ( 1 ) The structure effectively exhibits a sound insulating effect by itself, and is capable of further increasing the sound insulating effect when a damping material is attached.
摘要:
A vibration-damping section with sound absorbing material includes a sound proof panel, sound absorbing material fixed on one surface thereof and vibration damping material stuck on the top surface or the bottom surface of the sound proof panel one surface of the sound absorbing material which is the opposite side of the sound proof panel can be covered with a porous panel, if necessary, and moreover a joint is provided for hanging and connecting sections for closely connecting themselves one another in a width direction. Since the vibration-damping section with sound absorbing material according to the present invention has above described structure, in particular, it can be fixed on the bottom surface of an elevated bridge and has a sound insulating effect of the radiated noise which are caused by the elevated bridge structure and a sound absorbing effect of the reflected noise and moreover has a vibration damping effect of decreasing occurrence of the secondary noise by reducing the vibration of the sound absorbing panel.