A kind of cellulose fiber and nanofiber composite sound insulation material and preparation method thereof

A cellulose fiber and nanofiber technology, applied in fiber processing, textiles and papermaking, coating and other directions, to achieve the effect of improving sound absorption and sound insulation performance, small diameter, excellent sound absorption and sound insulation performance

Active Publication Date: 2018-06-19
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 research on the composite preparation of natural cellulose fibers and nanofibers obtained by electrospinning to prepare sound insulation materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In this embodiment, jute fiber is used as the cellulose fiber, and the cavity area accounts for 10% of the total cross-sectional area of ​​the fiber. The jute fiber is processed by opening and carding to form a single fiber-like high-quality fiber, and it is treated with a P-containing liquid flame-retardant finishing agent. m 2 . The thickness is 3mm.

[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 is electrospun into shape, the receiving end is the jute fiber net layer, the spinning voltage is 15kV, the receiving distance is about 12cm, and the advancing speed is 0.5ml / h, and the jute composite fiber structure covered with the nanofiber layer is obtaine...

Embodiment 2

[0030] In this embodiment, flax fiber is used as the cellulose fiber, and the cavity area accounts for 20% of the total cross-sectional area of ​​the fiber. The flax fibers are opened and carded to form single-fiber high-quality fibers, which are treated with a Si-containing liquid flame-retardant finishing agent. m 2 . The thickness is 3mm.

[0031] 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 is electrospun into shape, the receiving end is the flax fiber net layer, the spinning voltage is 15kV, the receiving distance is about 12cm, and the advancing speed is 0.5ml / h, and the flax composite fiber structure covered with nanofiber layer is obtained layer. The diamete...

Embodiment 3

[0033] In this embodiment, pineapple hemp fiber is used as the cellulose fiber, and the cavity area accounts for 15% of the total cross-sectional area of ​​the fiber. The pineapple hemp fiber is opened and carded to form a high-quality single fiber, and it is treated with a solid flame retardant finishing agent containing N. The dosage of the flame retardant is 3%, and then it is laid and needled into a net layer with an area density of 30g / m 2 . The thickness is 3mm.

[0034]The nanofiber layer can be formed by free surface electrospinning, and polyhydroxyalkanoate is used as the raw material for forming nanofibers. Polyhydroxyalkanoate (intrinsic viscosity 0.7-0.9), vacuum dried (60°C, 12h), using THF: DMAc (9:1) as a mixed solvent, configured into a 20% solution, magnetically stirred for 4h, let stand Degassing for 1h. The prepared polyhydroxyalkanoate solution is formed by electrospinning, the receiving end is a pineapple fiber net layer, the spinning voltage is 60kV,...

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Abstract

The invention belongs to the technical field of functional materials, and discloses a composite sound insulation material comprising cellulose fibers and nanofibers and a preparation method of the composite sound insulation material. The composite sound insulation material is obtained by compounding a composite fiber layer composed of natural cellulose fibers and nanofibers. The nanofibers are prepared by electrospinning. According to the invention, by combining the nanoscale fibers and the natural cellulose fibers, which are obtained through the electrospinning, the sound insulation performance of the composite material is improved; by use of the natural cellulous fibers and the biodegradable polymer, the environmentally-friendly concept is satisfied; and the composite sound insulation material and the preparation method thereof have bright application prospects.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a composite sound-insulating material of cellulose fibers and nanofibers and a preparation method thereof. Background technique [0002] With the development of the economy, people's living standards and quality of life are constantly improving. The construction and automobile industries are also developing rapidly, driving the popularization and application of sound insulation materials in homes, roads, especially automobiles and other fields. The main functions of automotive sound insulation products in the automotive field are sound insulation, vibration reduction, and warmth retention. Market Analysis In 2013, the total demand for domestic automotive sound insulation products exceeded 30 billion yuan, and the demand is still increasing. The main raw materials used in sound insulation products are all kinds of waste fibers, and then add some hot-melt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/425D04H1/4266D04H1/46D01D5/00
CPCD01D5/0023D01D5/003D01D5/0084D04H1/425D04H1/4266D04H1/46
Inventor 严玉蓉郭健欧阳业东苗振兴张文韬蒋智杰邱志明李晓春阳业林
Owner SOUTH CHINA UNIV OF TECH
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