A hybrid structure fully biodegradable composite sound insulation material and its preparation method

A sound insulation material, biodegradable technology, applied in coating, filament/wire forming, fiber processing, etc., to achieve the effect of small fiber diameter, maximum attenuation, and high porosity

Active Publication Date: 2018-10-09
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the preparation of sound insulation materials by electrospinning.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In this embodiment, the biodegradable fiber with micron structure is polyester fiber. The polyester fiber is opened and carded to form a single fiber state, and then stacked to form a uniaxially oriented network layer with a surface density of 30g / m 2 , the thickness is 3mm. The cross section of the polyester fiber is circular, has a cavity structure, and the fiber diameter is 12 μm.

[0028] The nanofiber layer can be formed by needle electrospinning, and polylactic acid is used as the raw material for forming nanofibers. Polylactic acid (PLA, M w =3×10 5 g / mol) after vacuum-drying (60°C, 12h), using chloroform as a solvent to prepare a 20% solution, magnetically stirring for 4h, and standing for defoaming for 2h. The prepared PLA solution was electrospun by the needle method, the receiving end was a polyester fiber mesh layer, the spinning voltage was 15kV, the receiving distance was about 12cm, and the advancing speed was 0.5ml / h, and the nanofiber layer was obta...

Embodiment 2

[0030] In this embodiment, the biodegradable fiber with micron structure is bio-based polyamide fiber. The bio-based polyamide fiber is opened and carded to form a single fiber state, and then stacked to form a uniaxially oriented network layer with an area density of 30g / m 2 , the thickness is 3mm. The cross-section of the bio-based polyamide fiber is non-circular, has two cavity structures, and the fiber diameter is 10 μm.

[0031] The nanofiber layer can be formed by electrospinning with a shuttle electrode method, and polycaprolactone is used as a raw material for forming nanofibers. Polycaprolactone (PCL, M w =8×10 4 g / mol) after vacuum drying (60° C., 12 h), using chloroform: DMF (4:1) as a mixed solvent to prepare a 15% solution, magnetic stirring for 4 h, and standing for defoaming for 2 h. The prepared PCL solution was electrospun by the shuttle electrode method. The receiving end was a bio-based polyamide fiber mesh layer. The spinning voltage was 55kV, the recei...

Embodiment 3

[0033] In this embodiment, the biodegradable fiber with micron structure is polycaprolactone fiber. The polycaprolactone fiber is opened and carded to form a single fiber state, and then stacked to form a uniaxially oriented network layer with a surface density of 30g / m 2 , the thickness is 3mm. The cross-section of the polycaprolactone fiber is non-circular, without cavity structure, and the fiber diameter is 15 μm.

[0034] The nanofiber layer can be formed by needle electrospinning, and polylactic acid is used as the raw material for forming nanofibers. Polylactic acid (PLA, M w =3×10 5g / mol) after vacuum-drying (60°C, 12h), using chloroform as a solvent to prepare a 15% solution, magnetically stirring for 4h, and standing for defoaming for 2h. The prepared PC solution is subjected to centrifugal electrospinning, the receiving end is a polycaprolactone network layer, the spinning voltage is 10kV, the receiving distance is about 10cm, and the rotation speed is 1000r / min,...

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Abstract

The invention belongs to the technical field of functional materials, and discloses a fully-biodegradable composite sound insulation material with a hybrid structure and a preparation method of the material. The composite sound insulation material is prepared by compositing a composite fiber layer with a melt-blown fiber layer, wherein the composite fiber layer is composed of biodegradable or photodegradable fibers with a micrometer structure and nanofibers, and the nanofibers are prepared through electrostatic spinning. By combining the nanoscale fibers prepared through electrostatic spinning with the biodegradable or photodegradable fibers, the sound insulation property of the composite material is greatly improved; meanwhile, the green and environment-friendly idea is met by applying the biodegradable or photodegradable fibers and a biodegradable polymer, and therefore the composite material achieves a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a fully biodegradable composite sound insulation material with a hybrid structure and a preparation method thereof. Background technique [0002] Noise pollution has become a contemporary global environmental problem, and it is listed as the world's four major pollutions together with air pollution, water pollution and solid waste pollution. With the development of the economy and the continuous improvement of people's living standards and quality of life, people's demand for sound-absorbing and sound-insulating materials is increasing, and their performance requirements are also getting higher and higher, especially in the fields of construction and automobiles. market continues to grow. The main functions of sound insulation and sound absorption materials in the automotive field are sound insulation, vibration reduction, and heat preservation. The main...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4374D04H1/4382D01D5/00D04H5/06
CPCD01D5/0015D01D5/0084D04H1/4374D04H1/4382D04H5/06
Inventor 严玉蓉欧阳业东张文韬蒋智杰阳业林邱志明王保东詹志城王凤霞刘海敏许伟鸿
Owner SOUTH CHINA UNIV OF TECH
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