-
公开(公告)号：US4674592A
公开(公告)日：1987-06-23
申请号：US796896
申请日：1985-11-12
申请人： Shuichi Aoki , Katsuyoshi Kumagai , Akihiko Haga , Minoru Ito
发明人： Shuichi Aoki , Katsuyoshi Kumagai , Akihiko Haga , Minoru Ito
CPC分类号： H04R7/02 , H04R7/125 , H04R2307/021 , H04R2307/025 , H04R2307/029 , Y10T428/21 , Y10T428/273 , Y10T428/277 , Y10T428/3175 , Y10T428/31779 , Y10T428/31783
摘要： A diaphragm for use in an electro-acoustic transducer comprises a diaphragm main body only or mainly composed of natural fibers, a layer formed by laminating thereover a polyamide resin and a synthetic resin coating layer further formed to the surface of the laminate layer. The diaphragm is free from pin holes, exhibits satisfactory water proofness and excellent physical properties such as sonic propagation velocity inherent to the natural fibers. It can be fabricated with ease at a good yield and can reduce the fabrication cost.
摘要翻译： 用于电声换能器的隔膜包括仅主要由天然纤维或主要由天然纤维构成的隔膜主体，通过层压聚酰胺树脂形成的层和进一步形成在层压层的表面上的合成树脂涂层。 隔膜没有针孔，表现出令人满意的防水性和优良的物理性质，如天然纤维固有的声速传播速度。 可以容易地以良好的成品率制造，并且可以降低制造成本。
-
公开(公告)号：US4451609A
公开(公告)日：1984-05-29
申请号：US391962
申请日：1982-06-24
IPC分类号： H04R7/20 , C08K5/16 , C08K5/49 , C08K5/5399 , C08L61/28 , C09K21/00 , C09K21/06 , C09K21/12 , D06M15/43 , G10K13/00 , H04R7/00 , H04R7/02
CPC分类号： H04R7/02 , C08K5/5399 , C09K21/12 , D21H21/34 , D21H5/0002 , Y10T428/31964
摘要： A flame-retarded speaker diaphragm is prepared by making a cone from cellulose fibers, impregnating the cellulosic cone with a solution of a trimethylol melamine monomer, an organic phosphorus- and nitrogen-containing compound, and a trialkyl amine catalyst in an alcohol solvent, and heating the impregnated cone until the solvent is removed and the melamine resin is cured. Flame retardancy is imparted to the cellulose cone-shaped diaphragm without the sacrifice of its frequency response.
摘要翻译： 通过从纤维素纤维制成锥体制备阻燃扬声器隔膜，在醇溶剂中用三羟甲基三聚氰胺单体，有机含磷和含氮化合物和三烷基胺催化剂的溶液浸渍纤维素锥体，以及 加热浸渍的锥体直到溶剂除去并且三聚氰胺树脂固化。 阻燃性赋予纤维素锥形隔膜而不牺牲其频率响应。
-
搜索结果
2 条记录 (耗时 0.016 秒)
