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Colored polyester concentric sheath-core composite fiber and method for producing the same

A composite fiber and colored polyethylene naphthalate technology, which is applied in the direction of conjugated synthetic polymer artificial filament, fiber treatment, melt spinning, etc., can solve the problems of difficult dyeing and fiber formation, and reduce the The effect of cost of use and broad market application prospects

Active Publication Date: 2016-11-30
SHANGHAI DEFULUN CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a kind of polyester (PET) as the core layer, colored polyester (PEN) as the concentric sheath-core composite fiber of the cortex, to overcome the shortcoming that polyester (PEN) becomes fiber difficult and difficult to dye, And make the fiber maintain the unique chemical stability, gas barrier, flame retardancy and heat resistance of polyester (PEN) fiber

Method used

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  • Colored polyester concentric sheath-core composite fiber and method for producing the same
  • Colored polyester concentric sheath-core composite fiber and method for producing the same
  • Colored polyester concentric sheath-core composite fiber and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Black polyester PEN / PET concentric sheath-core fiber with a production line density of 2.50dtex.

[0038] Leather component preparation: the polyester (PEN) slices are pre-crystallized in a high-temperature fluidized bed at 185-210°C for 2.5-3 hours. Then add the high-temperature-resistant black masterbatch with a color content of 25% to the pre-crystallized polyester (PEN) chips at a ratio of 10% by weight, and carry out drum vacuum blending and drying. The drum heating temperature is 132°C. Drying time 10-10.5 hours.

[0039] Preparation of core components: Put polyester (PET) chips into a drum dryer for vacuum drying, cool for half an hour after feeding, and then directly raise the temperature to 132°C for 10 hours of drying.

[0040] Using LFH105 composite spinning equipment, the skin and core components dried by their respective systems are melted and extruded through their respective screws, and enter the spinneret assembly through their respective pipelines and ...

Embodiment 2

[0047] Green polyester PEN / PET concentric sheath-core composite fiber with a production line density of 5.56dtex.

[0048] Leather component preparation: the polyester (PEN) slices are pre-crystallized in a high-temperature fluidized bed at 185-210°C for 2.5-3 hours. Add the high-temperature-resistant green masterbatch with a color content of 30% to the pre-crystallized polyester (PEN) chips at a ratio of 6% by weight, carry out drum vacuum blending and drying, and the drum heating temperature directly rises to 132°C, drying time 10-10.5 hours.

[0049] Preparation of core components: Put polyester (PET) chips into a drum dryer for vacuum drying, cool for half an hour after feeding, and then directly raise the temperature to 132°C for 10 hours of drying.

[0050] Using the composite spinning equipment of our factory, the sheath and core components dried by their respective systems are melted and extruded through their respective screws, and enter the spinneret components thro...

Embodiment 3

[0057] Brown polyester PEN / PET concentric sheath-core composite fiber with a production line density of 4.44dtex.

[0058] Leather component preparation: pre-crystallize polyester (PEN) slices in a high-temperature fluidized bed at 185-210°C for 2.5-3 hours, and then add high-temperature-resistant brown masterbatches with a color content of 25% to 10% by weight The ratio is added to the pre-crystallized polyester (PEN) chips, and the drum is vacuum blended and dried. The temperature of the drum is directly raised to 132 ° C, and the drying time is 10-10.5 hours.

[0059] Preparation of core components: Put polyester (PET) chips into a drum dryer for vacuum drying, cool for half an hour after feeding, and then directly raise the temperature to 132°C for 10 hours of drying.

[0060] Using the existing composite spinning equipment, the skin and core components dried by their respective systems are melted and extruded through their respective screws, and enter the spinneret assemb...

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Abstract

The invention provides a colored PEN / PET concentric sheath-core composite fiber. The sheath layer comprises a colored master batch and PEN, wherein the weight ratio of the colored master batch to the PEN is 5-15:95-85, and the colored master batch comprises colored powder and PEN, and the weight ratio of the colored powder to the PEN is 25-35:75-65. The core layer comprises PET. The weight ratio of the sheath layer components to the core layer component is 15-25:85-75. The defect that PEN fiber forming and dyeing are difficult is overcome, and the fiber keeps the unique chemical stability, gas barrier property, flame retardance, heat resistance and the like of the PEN fiber. The PET economical efficiency and favorable PEN fiber properties are organically combined, the PEN using cost is greatly reduced, the application range of the PEN in the fiber field is enlarged, and meanwhile the application range of the PET fiber in the industrial field can be broadened further.

Description

technical field [0001] The invention relates to a composite fiber and a preparation method thereof, in particular to a colored polyester PEN / PET concentric sheath-core fiber and a preparation method thereof. Background technique [0002] Polyester (PET) fiber is the abbreviation of polyethylene terephthalate fiber, which is currently the fiber with the largest production volume and the most extensive application field among synthetic fibers. However, with the further expansion of its application in the industrial field, people put forward new requirements for its characteristics, requiring polyester (PET) fibers to be both flame retardant and heat resistant, especially the fiber can be used in a high temperature environment of 150-160 °C Long-term use without embrittlement. Since the existing ordinary polyester (PET) fibers are not flame retardant, and the fibers can only be used for a long time in an environment not exceeding 120°C, their further application in the industr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F1/04D01D5/34D01D5/08
Inventor 陆正辉陈辉华邱杰峰陆育明杨卫忠冯忠耀沈飞
Owner SHANGHAI DEFULUN CHEM FIBER
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