LCP acoustic film and preparation method thereof

Abstract

The invention discloses an LCP acoustic film, which is prepared from the following raw materials by weight: 15-20 parts of a vinyl fluorine-containing cyclohexyl methyl ether liquid crystal compound/methyl methacrylate/4-acryloyloxybenzophenone/single-terminal vinyl silicone oil copolymer, 50-60 parts of a liquid crystal polymer, 30-40 parts of poly1,4-dihydroxy-2-butene 2,7-naphthalenedicarboxylate, 8-12 parts of vinyl-POSS, 0.2-0.4 part of a heat stabilizer, 0.1-0.4 part of a lubricant, 0.1-0.3 part of an antioxidant and 0.02-0.05 part of an initiator. The invention further provides a preparation method of the LCP acoustic film. According to the invention, the LCP acoustic film retains the advantages of heat resistance, molding processability, dimensional stability, optical performance,electrical performance, chemical resistance, excellent flame retardancy, low dielectric constant and dielectric loss of LCP, and further has good weather resistance, good heat resistance, good mechanical property, good sensitivity and good consistency.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an LCP acoustic film and a preparation method thereof. Background technique [0002] In recent years, with the continuous advancement of science and technology and the rapid development of electronic information technology, electroacoustic transducers have gradually entered people's lives, and have been popularized in ordinary people's daily lives, adding to people's colorful lives. A new sum for the time being. An electroacoustic transducer, also known as an acoustic transducer, is a device that converts an electrical signal (ie voltage) into an alternating sound pressure (ie acoustic signal), or vice versa. Examples of acoustic transducers are loudspeakers as sound generators, and microphones, sensors and pickups as sound receivers. Due to its excellent electroacoustic conversion function, it is widely used in various types of speakers and microphones, especially fo...

AI Technical Summary

Problems solved by technology

[0004] The common acoustic membrane material in the prior art is polysiloxane material, which has satisfactory mechanical properties and can meet the basic needs of acoustic membranes in common applications, but has low sensitivity, poor consistency, and low dielectric strength. The constant and dielectric loss need to be further improved, which leads to great limitations in its application in fields with high requirements for sensitivity and consistency, such as voiceprint recognition and heart-related sound collection in the medical field.