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A kind of side-by-side composite fiber and preparation method thereof

A composite fiber and composite spinning technology, applied in fiber processing, fiber chemical characteristics, rayon manufacturing, etc., can solve problems such as environmental pollution, composite fiber hygroscopicity, poor wear resistance, greenhouse effect, etc., and achieve production costs Low, reduce greenhouse effect, good hygroscopic effect

Active Publication Date: 2022-07-19
CATHAY R&D CENT CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the raw materials of nylon 6 and nylon 66 are mainly extracted from petroleum. With the depletion of petroleum, a large amount of carbon dioxide is produced in the process of petroleum extraction, which pollutes the environment and produces serious consequences such as the greenhouse effect, and the hygroscopicity and wear resistance of composite fibers are not good. good

Method used

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  • A kind of side-by-side composite fiber and preparation method thereof
  • A kind of side-by-side composite fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] 1) the polyamide 56 melt and the polyethylene terephthalate melt are merged in the composite spinning assembly through respective melt pipes, and extruded through the parallel composite spinneret to form the primary filament;

[0082] The proportion of the side-by-side composite components is accurately adjusted by a metering pump, the content of the first side-by-side structure polyamide 56 is 50wt%, and the second side-by-side structure polyethylene terephthalate content is 50wt%.

[0083] Wherein, the preparation method of polyamide 56 melt is as follows: polyamide 56 resin is heated to a molten state in a screw extruder to form a melt, and the screw extruder is heated in five zones: the temperature of one zone is 245° C., The temperature of the second zone is 250°C, the temperature of the third zone is 265°C, the temperature of the fourth zone is 275°C, and the temperature of the fifth zone is 280°C; the relative viscosity of the polyamide 56 resin 96wt% sulfuric aci...

Embodiment 2

[0089] 1) the polyamide 56 melt and the polytrimethylene terephthalate melt are merged in the composite spinning assembly through respective melt pipelines, and extruded through the parallel composite spinneret to form primary filaments;

[0090] The proportion of the side-by-side composite components is accurately adjusted by a metering pump, the content of the first side-by-side structure polyamide 56 is 40wt%, and the second side-by-side structure polytrimethylene terephthalate content is 60wt%.

[0091] Wherein, the preparation method of the polyamide 56 melt is as follows: the polyamide 56 resin is heated to a molten state in a screw extruder to form a melt, and the screw extruder is heated in five zones: the temperature in one zone is 246°C; The temperature of the second zone is 258°C; the temperature of the third zone is 266°C; the temperature of the fourth zone is 278°C; the temperature of the fifth zone is 285°C;

[0092] The preparation method of the polytrimethylene...

Embodiment 3

[0097] 1) the polyamide 56 melt and the polybutylene terephthalate melt are merged in the composite spinning assembly through respective melt pipes, and extruded through the parallel composite spinneret to form primary filaments;

[0098] The proportion of the side-by-side composite components is accurately adjusted by a metering pump, the content of the first side-by-side structure polyamide 56 is 45wt%, and the second side-by-side structure polybutylene terephthalate content is 55wt%.

[0099] Wherein, the preparation method of polyamide 56 melt is to polymerize pentamethylene diamine and adipic acid to form polyamide 56. Wherein, the method for preparing polyamide 56 melt by direct polymerization of 1,5-pentamethylenediamine and adipic acid is as follows: under nitrogen conditions, 1,5-pentamethylenediamine, adipic acid and water are mixed uniformly to prepare a polyamide 56 melt. The salt solution of amide 56; wherein, the molar ratio of 1,5-pentanediamine and adipic acid ...

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Abstract

The invention provides a side-by-side composite fiber and a preparation method thereof. The side-by-side composite fiber in the present invention comprises a first side-by-side structure and a second side-by-side structure, the first side-by-side structure is polyamide 5X, and the second side-by-side structure is polyester and / or or polyamide 6X. The preparation method of the side-by-side composite fiber comprises: 1) combining the first side-by-side structure melt and the second side-by-side structure melt in a composite spinning assembly through respective melt pipes, and extruding through a side-by-side composite spinneret to form a spun yarn 2) Cooling, oiling, drawing, heat-setting, and winding the spun silk to obtain the fiber. The composite fiber is soft, has good hygroscopicity, has three-dimensional crimping performance and high elastic performance, and can be widely used in the fields of knitting and weaving.

Description

technical field [0001] The invention belongs to the technical field of textiles, and particularly relates to a side-by-side composite fiber. Background technique [0002] The side-by-side composite fiber uses two polymer materials with different shrinkage properties to produce a side-by-side structure fiber, which is a kind of crimped elastic fiber made of two-component composite spinning from two polymers with different structures or properties. Two kinds of high polymers with different characteristics are combined to form bicomponent composite filaments through side-by-side composite spinning in a certain proportion. Because the two components arranged in parallel within the fiber have different shrinkage and initial modulus. When the composite fiber is spun and drawn, the two components produce the same elongation, but after heating, the different shrinkage effect occurs due to the different shrinkage stress of the two components, and the two components are glued togethe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F8/12D01F1/10D01D5/32
CPCD01F8/14D01F8/12D01F1/10D01D5/32
Inventor 孙朝续徐晓辰秦兵兵刘修才
Owner CATHAY R&D CENT CO LTD