Soundproofing material
AssigneeNichias Corporation
InventorsKazutaka Murayama, Keiji Tsukahara, Hikari Sasaki, Yuuma Tomitsuka, Tatsuro Miki, Daisuke Ando
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Abstract
A soundproofing material including a porous body having a cell structure and including inorganic fibers other than asbestos, wherein an average cell diameter is more than 300 μm and 1000 μm or less, a bulk density is 0.007 to 0.024 g/cm3, and a flow resistivity is 170,000 to 2,000,000 Ns/m4.
Claims8
A soundproofing material which is an inorganic fibrous porous body having a cell structure and comprising inorganic fibers other than asbestos, wherein
- an average cell diameter is 260 μm or more and 1000 μm or less,
- a bulk density is 0.0068 to 0.024 g/cm3,
- a flow resistivity is 170,000 to 3,000,000 Ns/m4, and
- the inorganic fibrous porous body comprises the inorganic fibers and one or more binders comprised of a coupling agent and optionally an inorganic binder, wherein the coupling agent is one or more of a silane coupling agent or a titanium coupling agent, wherein the inorganic fibers and one or more binders comprise a total amount of 95 wt % or more of the porous body, and wherein the coupling agent comprises 1 to 10 wt % of the porous body.
A soundproofing material which is an inorganic fibrous porous body, wherein
- the inorganic fibrous porous body comprises inorganic fibers other than asbestos, and has a compressive stress when compressed at normal temperature at a compression ratio of 80% of 0.1 MPa or less and a recovery ratio when compressed at normal temperature at a compression ratio of 80% of 50% or more, and
- the inorganic fibrous porous body comprises the inorganic fibers and one or more binders comprised of a coupling agent and optionally an inorganic binder, wherein the coupling agent is one or more of a silane coupling agent or a titanium coupling agent, wherein the inorganic fibers and one or more binders comprise a total amount of 98 wt % or more of the porous body, wherein the coupling agent comprises 1 to 10 wt % of the porous body, and wherein the one or more binders do not comprise clay minerals.
A soundproofing material which is an inorganic fibrous porous body, wherein
- the inorganic fibrous porous body consists of inorganic fibers other than asbestos and a coupling agent, or consists of inorganic fibers other than asbestos, a surfactant and a coupling agent, wherein the coupling agent is one or more of a silane coupling agent or a titanium coupling agent,
- the inorganic fibers and the coupling agent comprise 98 wt % or more of the porous body, and the coupling agent comprises 1 to 10 wt % of the porous body, and
- all of recovery ratios of the porous body when compressed at normal temperature at each compression ratio in a range of compression ratio of 0 to 90% are 80% or more.
Dependencies are inferred from the claim text.