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    • 4. 发明授权
    • Aqueous zirconia sol and method of preparing same
    • 氧化锆水溶胶及其制备方法
    • US5643497A
    • 1997-07-01
    • US460593
    • 1995-06-02
    • Takao KagaYutaka KimuraFumio SaitoHiroaki Tanaka
    • Takao KagaYutaka KimuraFumio SaitoHiroaki Tanaka
    • B01J13/00
    • B01J13/00
    • A stable aqueous sol of colloidal zirconia having lowered surface activity and useful for polishing semiconductors and the like, is prepared by a process comprising calcining a colloidal zirconia having a specific surface area of 10 to 400 m.sup.2 /g, a particle size of 20 to 500 nm and a dehydratable water content of 4 to 15% by weight at 400.degree. to 1,000.degree. C. to form a calcined zirconia having a dehydratable water content of 0.1 to 2% by weight, and pulverizing the calcined zirconia in the presence of a water-soluble acid or alkali in water, to form the stable sol of colloidal zirconia having a specific surface area of 5 to 200 m.sup.2 /g, a particle size of 20 to 1,500 nm and a dehydratable water content of 0.1 to 3% by weight. The stable sol of colloidal zirconia has a ZrO.sub.2 concentration of 5 to 80% by weight.
    • 通过包括煅烧比表面积为10-400m 2 / g,粒度为20-500的胶体氧化锆的方法制备具有降低的表面活性并可用于抛光半导体等的胶态氧化锆稳定的水性溶胶 并且在400-1000℃下可脱水的含水量为4至15重量%,以形成可脱水水含量为0.1至2重量%的煅烧氧化锆,并在煅烧的水的存在下粉碎煅烧氧化锆 在水中的可溶性酸或碱,形成比表面积为5〜200m 2 / g,粒径为20〜1500nm,脱水水分为0.1〜3重量%的胶态氧化锆的稳定溶胶。 胶体氧化锆的稳定溶胶的ZrO2浓度为5〜80重量%。
    • 6. 发明申请
    • Diaphragm for loudspeaker and loudspeaker
    • 扬声器和扬声器的隔膜
    • US20090028376A1
    • 2009-01-29
    • US10586293
    • 2004-12-08
    • Fumio SaitoTakashi Mikuniya
    • Fumio SaitoTakashi Mikuniya
    • H04R11/02H04R7/00H04R9/06
    • H04R7/12H04R9/06
    • A diaphragm body (12) is provided with a plurality of slits (14, 14a) extending from the central part thereof toward the outer circumference. The slits (14, 14a) are filled with a low-elasticity filling material composed of a material different from that of the diaphragm body (12). The slits (14, 14a) are extended rectilinearly or curvedly. The filling material (15) has a Young's modulus lower than that of the principal material of the diaphragm body (12) and/or an internal loss larger than of the principal material of the diaphragm body (12). Furthermore, the filling material (15) employs UV ray and/or visible ray curable resin or thermoplastic resin. Alternatively the filler (15) may be a porous material or a foamed material. The diaphragm body (12) produced by filling the slits (14, 14a) with the filling material (15) is employed for constituting a loudspeaker.
    • 隔膜体(12)设置有从其中心部朝向外周延伸的多个狭缝(14,14a)。 狭缝(14,14a)填充有由不同于隔膜体(12)的材料构成的低弹性填充材料。 狭缝(14,14a)直线地或弯曲地延伸。 填充材料(15)的杨氏模量低于膜体(12)的主要材料的杨氏模量和/或比膜片体(12)的主要材料大的内部损耗。 此外,填充材料(15)使用紫外线和/或可见光线固化树脂或热塑性树脂。 或者,填料(15)可以是多孔材料或泡沫材料。 采用通过用填充材料(15)填充狭缝(14,14a)而产生的隔膜体(12)用于构成扬声器。