正弦波0.8W,手机微型喇叭我看可以把振膜音圈烧的面目全非了的

唉! 有没有振膜原材料的供应商?请各位DX告知!小生在此有礼了!

PEN和PEI都过不了0.8W白噪。

要试试PI系列的。

有没做复合材料或多层材料振膜的兄弟呀?

想做大功率手机喇叭，要用PEN,PPS,PI中选用，其中最耐高温的是PI,其次是PPS,但PI价格太高，用PPS最适合。

想作好的产品，要做好振膜片。

但绕线方法非常重要，不然线圈先会烧掉的。现在三星的产品是1.2W。

如需要，我们可以帮助设计。

　第９８楼的老大请问如何跟你们联啊？

有用的材料真多,但很少有公司一一去试.

好东西呀.谢谢了

顶一下~~~~~~~~~~

好东西啊，谢谢各位ＤＸ了，高手群英会啊！

从提高效率，保证语音清晰度和薄形的要求，对微型扬声器的振膜有以下要求：

１.首先材料的比弹性率即：杨氏模量/材料密度，要大；

２.材料的机械阻要大，以减小失真；

３.从加工方面看所用的材料要易于成形．

 

　　ＰＥＴ：聚对苯二甲酸乙二酯振膜．

　　ＰＥＴ是一种热塑性树脂，化学名聚对苯二甲酸乙二（醇）酯．

　　该品开发较早，最先是化纤的形式出现，用于振膜的商品名

　　叫做ＭＹＬＡＲ．其种类很多，另外一种就是ＰＢＴ，

　　ＭＹＬＡＲ有以下优点：

　　　具有一定弹性，

　　　耐磨，

　　　防潮，

　　　厚度均匀，

　　　抗化学药品，

　　　价格优廉．

　　ＭＹＬＡＲ还可以真空镀膜，染色，对环境无污染．

　　在制造振膜是容易形成和冲切．缺点是耐温不高，

　　在１３０摄氏度以上会变软，在外力的作用下容易变形，而且刚性较小．

 

Since Mylar® polyester film was invented in the early 1950s, it has been used in a variety of applications that add value to products in virtually all segments of the world. After nearly 50 years, the future still holds great promise for Mylar®. Its excellent balance of properties and extraordinary range of performance capabilities make Mylar® ideal for a broad array of applications in the electrical, electronics, magnetic media, industrial specialty, imaging and graphics, and packaging markets.

Mylar® polyester film, only by DuPont Teijin Films, is available uncoated or coated in a broad variety of thickness and width.

Biaxially-oriented polyethylene terephthalate (boPET) polyester film is used for its high tensile strength, chemical and dimensional stability, transparency, gas and aroma barrier properties and electrical insulation.

A variety of companies manufacture boPET and other polyester films under different trade names. In the US and Britain, the most well-known trade names are Mylar and Melinex.

[edit] History and manufacture

Biaxially oriented PET film was developed in the mid-1950s, originally by DuPont and ICI. In 1960 and 1964 NASA launched the Echo satellites, 100-foot diameter (30-meter dia.) balloons of metallized 0.005 inch (0.13 mm) thick boPET film.

Electronic / acoustic applications

• Very thin boPET film is often used as the diaphragm material in electrostatic loudspeakers and electret microphones.
• Biaxially oriented PET film has been used in the production of banjo & drumheads since 1958 due to its durability and acoustical properties when stretched over the bearing edge of the drum. They are made in single- and double-ply versions, with each ply being between 2 mils and 10 mils (0.05 – 0.25 mm) in thickness, with a clear or opaque surface, originally used by the company REMO.
• boPET film is used as the substrate in practically all recording tapes.
• Metallized boPET film, along with other plastic films, is used as a dielectric in foil capacitors.
• Clear boPET bags are used as packaging for audio media such as compact discs and vinyl records.

Melinex® polyester films are known around the world and used in hundreds of industrial, packaging, imaging, printing, technical and consumer products.

With more than 930 basic grade types covering 90+ market segments and 140+ specific end uses, we produce the world's broadest range of high-quality polyester film.

Melinex® is a biaxially oriented polyester film from the DuPont Teijin Films family of films. This family includes Melinex® polyester film, Mylar® polyester film and Cronar® polyester photographic film base.

Cronar® polyester photographic film base

Since 1955, Cronar® polyester photographic film base has served the graphic arts, imaging and medical industries. Superior coatability, adhesion, sheet flatness, clarity and dimensional stability make Cronar® the film of choice for a wide variety of photographic and industrial imaging applications. Cronar® opaque film (black) is excellent as a substrate when opacity is required.

Transparent Cronar® films (clear or blue) are ideally suited for subsequent coating with silver halide emulsions for medical and industrial X-rays. These films also are excellent for printing and publishing, printed circuits, and other industrial end uses. Cronar® films are available in 4-, 5- and 7-mil (100-, 125- and 175-µm) thickness and in widths from 43 to 63 in (1,090 to 1,600 mm). All Cronar® products are heat-treated for superior resistance to size change and temperature.

Teonex® 

DuPont Teijin Films extends its product line with these unique PEN-based films.

These films are designed for special situations, where films are subject to especially stringent conditions such as extreme heat or harsh chemicals, or for those applications where exceptional barrier performance is required.

Teonex® films bridge the gap between the price and performance of polyester and polyimide films.

The novel and innovative grades are perfect for high-value-added applications in labels, laminates, circuitry and release. Bring us your process or product challenge. For improved dimensional stability, inherent UV or rigorous processing, Teonex® PEN films are the answer.