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Flax-like skin-core composite fiber and preparation method thereof

A composite fiber and skin-core technology, which is applied in fiber processing, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of the difference in performance between the skin layer and the core layer material, and poor fiber forming effect.

Active Publication Date: 2014-08-20
JIANGSU DELI CHEM FIBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the difference in the performance of the skin layer and the core layer material often brings many difficulties to the production of composite fibers, such as poor fiber forming effect, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] PET and talc powder are blended into the screw at a mass ratio of 100:0.05 as the skin layer material, and PET and PE are blended at a mass ratio of 100:3 and added to the screw as the core layer material to carry out skin-core composite spinning; among them, the characteristics of PET The viscosity is 0.6dL / g, and the melt index of PP is 20g / 10min; the mass ratio of the skin layer material to the core material is 2:8; the spinning temperature is 275°C; the forced cooling zone is ring blowing, and the cooling blowing temperature is 20°C, relative humidity of 90%±5%, wind speed of 0.7m / s, length of 20cm; no wind area, located below the strong cold area, length of 30cm; secondary cooling area is side blowing, cooling blowing temperature is 25 ℃, the relative humidity is 65%±5%, the wind speed is 0.5m / s, the length is 30cm; the winding speed is controlled at 2700m / min.

[0030] After testing, the obtained hemp-like sheath-core composite fiber has a crack width of 0.2-0.5 μ...

Embodiment 2

[0032]PET and zinc oxide are blended with a mass ratio of 100:0.3 and added to the screw as a skin material, and PET and PE are blended with a mass ratio of 100:7 and added to a screw as a core material for skin-core composite spinning. Among them, the characteristics of PET The viscosity is 0.65dL / g, the melt index of PP is 25g / 10min; the mass ratio of the skin layer material to the core material is 5:5; the spinning temperature is 285°C; the strong cooling zone is ring blowing, and the cooling blowing temperature is 15°C, relative humidity of 90%±5%, wind speed of 0.8m / s, length of 30cm; no wind area, located below the strong cold area, length of 20cm; secondary cooling area is side blowing, cooling blowing temperature is 22 ℃, the relative humidity is 65%±5%, the wind speed is 0.6m / s, the length is 30cm; the winding speed is controlled at 3000m / min.

[0033] After testing, the obtained hemp-like sheath-core composite fiber has a crack width of 0.2-0.5 μm, a depth of 0.1-0.3...

Embodiment 3

[0035] PET and sodium benzoate are blended into the screw at a mass ratio of 100:0.5 as the skin material, and PET and PE are blended at a mass ratio of 100:10 and added to the screw as the core material for sheath-core composite spinning. Among them, the characteristics of PET The viscosity is 0.7dL / g, and the melt index of PP is 30g / 10min; the mass ratio of the skin layer material to the core material is 5:5; the spinning temperature is 290°C; the strong cooling zone is ring blowing, and the cooling blowing temperature is 10°C, relative humidity of 90%±5%, wind speed of 0.9m / s, length of 20cm; no wind area, located below the strong cold area, length of 30cm; secondary cooling area is side blowing, cooling blowing temperature is 20 ℃, the relative humidity is 65%±5%, the wind speed is 0.7m / s, the length is 30cm; the winding speed is controlled at 3200m / min.

[0036] After testing, the obtained hemp-like sheath-core composite fiber has a crack width of 0.2-0.5 μm, a depth of 0...

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Abstract

The invention relates to a flax-like skin-core composite fiber and a preparation method thereof. The flax-like skin-core composite fiber comprises a skin layer and a core layer, wherein the skin layer is made of PET with a nucleating agent, and the core layer is made of a PET-PP blend. Since the extrusion swell behaviors of the skin layer material and the core layer material of the skin-core composite fiber are different, a skin-core composite spinning process is employed to prepare the surface-cracked flax-like skin-core composite fiber, and the flax-like skin-core composite fiber has hand feeling of flax and a deep dyeing effect.

Description

technical field [0001] The invention relates to a skin-core composite fiber and a preparation method thereof, in particular to a hemp-like skin-core composite fiber and a preparation method thereof. Background technique [0002] Polyester (PET) is one of the most widely used synthetic polymers by humans. PET was synthesized as early as the 1940s, and it was found to have excellent properties, and it is widely used in textiles, packaging, and medical treatment. Sanitation, automobiles, electronic appliances, safety protection, environmental protection and other fields. With the progress of society and the improvement of people's living standards, the demand for the differentiation and functionalization of polyester fibers is getting higher and higher. The differentiated fibers of polyester are mainly characterized by form (fine denier, special-shaped cross-section, etc.), high performance (high strength, high modulus, low shrinkage, etc.), high function (high sensitivity, mo...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F8/06D01F1/10D01D5/34D01D5/092D01D5/088
Inventor 赵金广倪凤军张秉怀唐辉王浩宋江颂沙跃蔡瑞杨培恒李振宇王雨生
Owner JIANGSU DELI CHEM FIBER CO LTD
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