(EN) The invention discloses a composite vibrating diaphragm, a preparation method of the composite vibrating diaphragm and a sound production device. The composite vibrating diaphragm comprises an adhesive film layer and a supporting layer, wherein the adhesive film layer is prepared from a rubber material and a cross-linking agent through a cross-linking reaction; the rubber material comprises at least one of an ethylene-acrylate bipolymer and an ethylene-acrylate-unsaturated organic carboxylic acid terpolymer; in parts by mass, 100 parts of the rubber material exist while 0.5-10 parts of the cross-linking agent exist; the adhesive film layer has a modulus of 1-20 MPa; and the supporting layer is made of thermoplastic elastomer. The adhesive film layer has the characteristics of high damping,high resilience, long service life, oil resistance, weather resistance and the like, the adhesive film layer is firmly bonded with the supporting layer, and the modulus of the adhesive film layer ishigher than that of a conventional acrylic acid adhesive film/silica gel adhesive film layer. In the vibrating diaphragm forming process, the adhesive film layer is extruded to deform uniformly, the thickness of each part of the vibrating diaphragm is uniform, and the reliability is excellent.
(ZH) 本申请公开了一种复合振膜、复合振膜的制备方法及发声装置。复合振膜包括胶膜层和支撑层，胶膜层采用橡胶材料与交联剂经交联反应制成，橡胶材料包括乙烯‑丙烯酸酯二元共聚物和乙烯‑丙烯酸酯‑不饱和有机羧酸三元共聚物中的至少一种，按照质量份数计，橡胶材料的质量份数为100份，交联剂的质量份数为0.5份～10份，胶膜层的模量为1MPa～20MPa；支撑层采用热塑性弹性体制成。本申请的胶膜层具有高阻尼、高回弹，寿命长、耐油、耐候性等特点，胶膜层同支撑层粘结牢靠，胶膜层模量比常规丙烯酸胶膜/硅胶胶膜层高。在振膜成型过程中，胶膜层受挤压均匀变形，振膜各部位厚度均一，可靠性优。
