CN218830594U

CN218830594U - Novel vibrating diaphragm

Info

Publication number: CN218830594U
Application number: CN202222420876.4U
Authority: CN
Inventors: 柏喜娟
Original assignee: Nanjing Chenggang Electronic Technology Co ltd
Current assignee: Nanjing Chenggang Electronic Technology Co ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2023-04-07
Anticipated expiration: 2032-09-13

Abstract

The utility model discloses a novel vibrating diaphragm, which consists of a release layer (1), a first thermoplastic elastomer layer (2), a nanometer toughening layer (3) and a second thermoplastic elastomer layer (4) from top to bottom in sequence; the thickness of the release layer (1) is 10-100 mu m, the first thermoplastic elastomer layer (2) and the second thermoplastic elastomer layer (4) are polyurethane thermoplastic elastomers, the hardness is 65-95A, the thickness is 5-50 mu m, the nano toughening layer (3) is thermoplastic nano fibers, and the thickness is 5-30 mu m; the diaphragm has good stability at high and low temperatures, good elasticity, good tensile property, uniform thickness, low distortion, light weight, sensitivity and adjustable size, and can be used for preparing products with different moduli to match the design requirements of different diaphragms.

Description

Novel vibrating diaphragm

Technical Field

The utility model relates to an acoustic material technical field, C08L33/04, concretely relates to novel vibrating diaphragm.

Background

Vibrating diaphragm vibration is the source of sound production product sound, and the vibrating diaphragm has influenced the tone quality and the tone quality of product sound to a great extent, has following several requirements to the vibrating diaphragm under general: the thickness is thin so as to ensure the sensitivity of the diaphragm; (2) The elastic modulus is high, the material density is low, and the sound coverage is uniform when the vibrating diaphragm vibrates in a wider frequency range; (3) The rigidity is strong, the vibration identity is good, so that the vibrating diaphragm has a flat frequency response curve even in a high-frequency part, and the tone color is smooth and soft; (4) The damping performance is good and should have large internal losses to reduce distortion levels. However, the polymer materials such as PET or PEEK used in the market at present have light weight and good damping performance, but have poor rigidity, low modulus and general high temperature resistance, and the sound quality is general when the diaphragm is made of the polymer materials.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the above-mentioned prior art, provide a material stability under the high low temperature good, elasticity good, tensile properties good, thickness is even, the distortion is low, the light sensitive novel vibrating diaphragm.

In order to solve the technical problem, the utility model provides a technical scheme does:

the utility model provides a novel vibrating diaphragm which characterized in that, the vibrating diaphragm comprises from top to bottom in proper order from type layer 1, first thermoplastic elastomer layer 2, nanometer toughening layer 3, second thermoplastic elastomer layer 4.

Further, the release layer 1 is one of a PET film, a CPP film, an OPP film, a BOPP film and release paper.

Further, the release layer 1 is an OPP film or a CPP film.

Further, the thickness of the release layer 1 is 10-100 μm.

Further, the first and second

thermoplastic elastomer layers

2, 4 are polyurethane thermoplastic elastomers.

Further, polyurethane thermoplastic elastomer is oily polyurethane thermoplastic elastomer, the utility model discloses in to there is not the restriction oil polyurethane thermoplastic elastomer's purchase producer.

Further, the first thermoplastic elastomer layer 2 and the second thermoplastic elastomer layer 4 have a hardness of 50 to 100A.

Further, the first thermoplastic elastomer layer 2 and the second thermoplastic elastomer layer 4 have a hardness of 65 to 95A.

Further, the first thermoplastic elastomer layer 2 and the second thermoplastic elastomer layer 4 are coated to a thickness of 5 to 50 μm.

Further, the nano toughening layer 3 is thermoplastic nanofiber.

Further, the thickness of the nano toughening layer 3 is 5-30 μm.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model comprises a four-layer structure of a release layer 1, a first thermoplastic elastomer layer 2, a nanometer toughening layer 3 and a second thermoplastic elastomer layer 4, wherein the two thermoplastic elastomer layers and the composite nanofiber membrane toughen the diaphragm, the diaphragm has uniform thickness, good appearance, high elastic modulus and adjustable size, and products with different moduli can be prepared to match the design requirements of different diaphragms;

2. the middle two thermoplastic elastomer layers of the utility model are polyurethane thermoplastic elastomers, the hardness of the middle two thermoplastic elastomer layers is specified to be 65-95A, the nanometer toughening layer adopts thermoplastic nanofibers, the composite action of the two substances ensures that the vibrating diaphragm is not easy to generate plastic deformation at high temperature, is not easy to become brittle at low temperature, has high elasticity, good tensile property and distortion, does not need to be compounded with a glue film or a PEEK material, saves the cost, is simple in production and operation, and has high yield;

3. the thickness of the middle thermoplastic elastomer layer of the utility model is 5-50 μm, the thickness of the nanometer toughening layer is 5-30 μm, the film layer is light and thin, the thickness is even, and the sensitivity is high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Description of the reference numerals: the nano-toughening material comprises a release layer 1, a first thermoplastic elastomer layer 2, a nano-toughening layer 3 and a second thermoplastic elastomer layer 4.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

Further, the release layer 1 is an OPP film.

Further, the thickness of the release layer 1 is 100 μm.

Further, the first thermoplastic elastomer layer 2 and the second thermoplastic elastomer layer 4 are polyurethane thermoplastic elastomers which are oil-based polyurethane thermoplastic elastomers; the utility model discloses it is right oil polyurethane thermoplastic elastomer's purchase producer does not have the restriction, this embodiment oil polyurethane thermoplastic elastomer buy from the big chemistry of cigarette taihua, the model is HD-80NH.

Further, the hardness of the first thermoplastic elastomer layer 2 and the second thermoplastic elastomer layer 4 was 95A.

Further, the first thermoplastic elastomer layer 2 and the second thermoplastic elastomer layer 4 were coated to a thickness of 5 μm.

Further, the nano toughening layer 3 is thermoplastic nanofiber.

Further, the thickness of the nano toughening layer 3 is 30 μm.

Example 2

Further, the release layer 1 is an OPP film.

Further, the thickness of the release layer 1 is 10 μm.

Further, the first thermoplastic elastomer layer 2 and the second thermoplastic elastomer layer 4 are polyurethane thermoplastic elastomers, which are oil-based polyurethane thermoplastic elastomers available from taiwan university and have a model number of HD-80NH.

Further, the hardness of the first thermoplastic elastomer layer 2 and the second thermoplastic elastomer layer 4 is 65A.

Further, the first thermoplastic elastomer layer 2 and the second thermoplastic elastomer layer 4 were coated to a thickness of 50 μm.

Further, the nano toughening layer 3 is thermoplastic nanofiber.

Further, the thickness of the nano toughening layer 3 is 5 μm.

Example 3

Further, the release layer 1 is a CPP film.

Further, the thickness of the release layer 1 is 55 μm.

Further, the first thermoplastic elastomer layer 2 and the second thermoplastic elastomer layer 4 have a hardness of 80A.

Further, the first thermoplastic elastomer layer 2 and the second thermoplastic elastomer layer 4 were coated to a thickness of 30 μm.

Further, the nano toughening layer 3 is thermoplastic nanofiber.

Further, the thickness of the nano toughening layer 3 is 20 μm.

The utility model discloses a novel vibrating diaphragm, which consists of a four-layer structure from top to bottom, namely a release layer (1), a first thermoplastic elastomer layer (2), a nano toughening layer (3) and a second thermoplastic elastomer layer (4); the thickness of the release layer (1) is 10-100 mu m, the first thermoplastic elastomer layer (2) and the second thermoplastic elastomer layer (4) are polyurethane thermoplastic elastomers, the hardness is 65-95A, the thickness is 5-50 mu m, the nano toughening layer (3) is thermoplastic nano fibers, and the thickness is 5-30 mu m; the vibrating diaphragm has the advantages of good stability, good elasticity, good tensile property, uniform thickness, low distortion, light weight, sensitivity and adjustable size at high and low temperatures, and can be used for preparing products with different moduli to match the design requirements of different vibrating diaphragms.

Claims

1. The novel vibrating diaphragm is characterized by consisting of a release layer (1), a first thermoplastic elastomer layer (2), a nano toughening layer (3) and a second thermoplastic elastomer layer (4) from top to bottom in sequence;

the release layer (1) is an OPP film or a CPP film;

the thickness of the release layer (1) is 10-100 μm;

the first thermoplastic elastomer layer (2) and the second thermoplastic elastomer layer (4) are oil polyurethane thermoplastic elastomers;

the hardness of the thermoplastic elastomer layer (2) and the second thermoplastic elastomer layer (4) is 65-95A, and the coating thickness is 5-50 mu m;

the nano toughening layer (3) is thermoplastic nanofiber with the thickness of 5-30 μm.