ACOUSTIC AND THERMAL SHIELD FOR A MOTOR VEHICLE
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
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资源简介：
The invention relates to a shield (1) comprising: a thermo-compressed porous three-dimensional shell (2) based on glass fibers， said fibers being joined together by a binding agent; a foam-based inner spring layer (3)， said shield additionally having the following features: said layer is produced by reaction injection molding (RIM)， said layer overmolding said shell; said shell has a porosity arranged in order to enable said foam to penetrate a fraction (4) of the thickness of said shell， so as to create a leaktight skin (5); the binding agent is based on polypropylene; the shell (2) comprises between 45 and 55% by weight of glass fibers. The invention relates to a shield (1) comprising: a thermo-compressed porous three-dimensional shell (2) based on glass fibers， said fibers being joined together by a binding agent; a foam-based inner spring layer (3)， said shield additionally having the following features: said layer is produced by reaction injection molding (RIM)， said layer overmolding said shell; said shell has a porosity arranged in order to enable said foam to penetrate a fraction (4) of the thickness of said shell， so as to create a leaktight skin (5); the binding agent is based on polypropylene; the shell (2) comprises between 45 and 55% by weight of glass fibers.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
