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Skin-core structure light-reflecting composite fiber and preparation method thereof

A composite fiber and skin-core structure technology, which is applied in fiber processing, conjugated synthetic polymer artificial filament, textiles and papermaking, etc., can solve the problems of short service life, easily damaged surface structure, and attenuation of reflective efficiency, and achieve production The environment is clean and safe, the production cost is reduced, and the effect of avoiding instability

Inactive Publication Date: 2013-07-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] These existing reflective materials only introduce a high refractive index glass bead or triangular prism microlattice structure on the surface of the material. The preparation process is complicated, the surface structure is easily damaged, the reflective elements are easy to fall off, and the service life is short. Long-term use of reflective materials Efficiency attenuation is serious

Method used

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  • Skin-core structure light-reflecting composite fiber and preparation method thereof
  • Skin-core structure light-reflecting composite fiber and preparation method thereof
  • Skin-core structure light-reflecting composite fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing reflective composite fibers, using a composite spinning process, the spinneret assembly is a sheath-core composite spinning assembly, and polyimide (polyester or polyamide materials with a refractive index greater than 1.5, please specify the substance) as The skin layer material, air (polyester or polyolefin material or air with a refractive index less than 1.5, please specify the material) as the core layer material, is respectively melted and extruded, metered, and then enters the same skin-core spinneret assembly, two melts Converge at the spinneret hole in the assembly and extrude the spinneret hole. The fiber is wound after cooling and oiling. The spinning temperature is 230-300°C and the winding speed is 500-3200m / min. Stretching to obtain finished silk.

[0033] The spinneret assembly is a sheath-core composite spinneret with a double-layer hole structure, wherein the cross-section of the center hole of the upper distribution plate is a re...

Embodiment 2

[0035] A preparation method of reflective composite fiber, which adopts the composite spinning process, the spinneret assembly is a sheath-core type composite spinning assembly, and polycarbonate (polyester or polyamide material with a refractive index greater than 1.5, please specify the substance) as the skin layer Material, (polyester or polyolefin material or air with a refractive index less than 1.5, please specify the substance) polyvinylidene fluoride is used as the core material, which is melted and extruded and metered, and then enters the same sheath-core spinneret assembly, two kinds The melts meet at the spinneret holes in the assembly and are extruded from the spinneret holes. The fibers are cooled and oiled and then wound. The spinning temperature is 230-300°C and the winding speed is 500-3200m / min. The finished silk is obtained by stretching the silk.

[0036] The spinneret assembly is a sheath-core composite spinneret with double-layer hole structure, wherein t...

Embodiment 3

[0038] A method for preparing reflective composite fibers, using a composite spinning process, the spinneret assembly is a sheath-core composite spinning assembly, polyvinylcarbazole (polyester or polyamide materials with a refractive index greater than 1.5, please specify the substance) As the skin layer material, (polyester or polyolefin material with a refractive index less than 1.5 or air, please specify the substance) polybutylacrylate as the core layer material is melted and extruded and metered, and then enters the same skin-core spinneret assembly, The two melts meet at the spinneret holes in the assembly and are extruded out of the spinneret holes. The fibers are cooled and oiled and then wound. The spinning temperature is 230-300°C and the winding speed is 500-3200m / min. The wound yarn is stretched to obtain the finished yarn.

[0039] The spinneret assembly is a sheath-core composite spinneret with double-layer hole structure, wherein the cross-section of the center...

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Abstract

The invention relates to a skin-core structure light-reflecting composite fiber and a preparation method thereof, in particular to a two-component skin-core structure light-reflecting composite fiber with different refractive indexes and the preparation method thereof. The skin-core structure two-component composite fiber with light-reflecting effect is prepared by utilizing composite spinning technology. The shape of a skin layer in the cross section of the light-reflecting composite fiber is round. A core layer is of a regular polygon star shape. A skin-layer fiber makes close contact with a core-layer fiber. The light-reflecting composite fiber has the advantages of being strong in light-reflecting property, simple in process, low in cost, good in durability, and smooth in mechanical property and the like. After being knitted, the fiber is suitable for safety warning of traffic coordination, fire safety, salvage, down-mine operation and the like, has the advantages of being attractive, safe and the like, and is wide in market application prospect.

Description

technical field [0001] The invention relates to a light-reflecting composite fiber with a skin-core structure and a preparation method thereof, in particular to a light-reflection composite fiber with a skin-core structure with two components of different refractive indices and a preparation method thereof. Background technique [0002] In daily life and production, not everyone has a strong sense of safety. Faced with unobvious safety warnings, they cannot be quickly discovered, especially in dark conditions, which are more likely to cause safety accidents and cause personal and economic losses. The ideal safety warning is to be able to effectively cause strong stimulation within the scope of the label, making it easy for people to notice the existence of danger, avoid accidents, and realize the harmonious development of society. [0003] Reflective materials, also known as retroreflective materials or retroreflective materials, include reflective film, reflective ink, refl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/34D01F8/04
Inventor 王彪陈茶娇施云舟张严予黄菁
Owner DONGHUA UNIV
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