Method and device for preparing three-component sound-absorption cotton through electrostatic spinning-melt blowing-dry laying

Abstract

The invention relates to a method and device for preparing three-component sound-absorption cotton through electrostatic spinning-melt blowing-dry laying. The method includes the following steps of firstly, mixing 10-65 parts by weight of electrostatic spinning nanofiber, 10-65 parts by weight of melt blowing superfine fiber and 10-40 parts by weight of dry fiber to obtain an electrostatic spinning-melt blowing-dry laying three-component fiber net; secondly, conducting processing after required grams per square meter of net is laid in a crossed mode to obtain the finished sound-absorption cotton product. The electrostatic spinning nanofiber, melt blowing superfine fiber and dry fiber are combined to prepare the three-component sound-absorption cotton, the obtained sound-absorption cotton has nano-scale electrostatic spinning fiber, micron-scale melt blowing fiber and thick dry staple fiber of different fineness degrees, the porosity of the sound-absorption cotton is larger due to the electrostatic spinning fiber of a nanometer structure, the fiber close to nanoscale can resonate with sound waves so as to attenuate energy, and the all-frequency sound absorption effect can be enhanced by reasonably configuring through three types of fibers of different fineness degrees.

Description

technical field [0001] The invention relates to the field of sound-absorbing cotton production, in particular to a method and device for preparing three-component sound-absorbing cotton by electrospinning-meltblowing-dry-forming. Background technique [0002] At present, the more common sound-absorbing cotton on the market is single-component PET felt. The traditional PET felt is made by dry-laid method. Its fiber diameter is about 15-35 μm, and its sound-absorbing performance is average. At present, many scholars and companies are devoting themselves to the development of new materials, and various countries are conducting research on non-woven fabrics so that they can play a greater role in the process of sound absorption and noise reduction in automobiles. Manufacturers of medium and high-end vehicles pay more attention to the use of new high-efficiency materials. For example, the polyester / polypropylene fiber Thinsulate thinsulate series noise-reducing material for vehi...

AI Technical Summary

Problems solved by technology

[0002] At present, the more common sound-absorbing cotton on the market is single-component PET felt. The traditional PET felt is made by dry-laid method. Its fiber diameter is about 15-35μm, and its sound-absorbing performance is average.

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