Unconstrained vibration damping metal sheet with foam pores and method for manufacturing same
AssigneePosco
InventorsJin-Tae Kim, Dae-Gyu Kang, Yang-Ho Choi, Jung-Hwan Lee
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Abstract
Provided is an unconstrained vibration damping metal sheet with foam pores. The unconstrained vibration damping metal sheet of the present invention comprises: a metal sheet; an organic-inorganic pretreatment layer containing an acrylic resin formed on the metal sheet; and a foam resin layer formed on the pretreatment layer, the foam resin layer containing, based on weight % thereof, a thermoplastic polyvinyl chloride resin: 40-80%, a plasticizer: 5-40%, a foaming agent: 0.1-10%, an oxide-based crosslinker: 1-4%, and spherical silica: 1-10%.
Claims11
An unconstrained vibration damping metal sheet with foam pores, comprising:
- a metal sheet;
- an organic-inorganic pretreatment layer containing a blend of an acrylic resin combined with inorganic substance formed on the metal sheet;
- and a
- foam resin layer formed on the pretreatment layer, wherein the foam resin layer contains, based on weight % thereof, a thermoplastic polyvinyl chloride resin:
- 40 to 80%, a plasticizer:
- 5 to 40%, a foaming agent:
- 0.1 to 10%, an oxide-based crosslinker:
- 1 to 4%, and spherical silica:
- 1 to 10%, and wherein a thickness of the foam resin layer ranges from 5 to 80 μm.
A method for manufacturing an unconstrained vibration damping metal sheet with foam pores, the method comprising:
- preparing a base metal sheet;
- forming a pretreatment layer with a thickness of 0.1 to 2 μm by applying an organic-inorganic pretreatment solution containing a blend of an acrylic resin combined with inorganic substance on the base metal sheet and then curing the organic-inorganic pretreatment solution at 60 to 150° C.;
- and
- forming a foam resin layer by applying a foam resin solution, which contains, based on weight % thereof, a thermoplastic polyvinyl chloride resin:
- 40 to 80%, a plasticizer:
- 5 to 40%, a foaming agent:
- 0.1 to 10%, an oxide-based crosslinker:
- 1 to 4%, and spherical silica:
- 1 to 10%, on the formed pretreatment layer to a thickness of 5 to 80 μm and foaming the foam resin solution in a temperature range of 200 to 220° C.
Dependencies are inferred from the claim text.