A kind of polyester imitation cotton type differential shrinkage composite yarn and preparation method thereof

A technology of iso-shrinkage and composite yarn, applied in the direction of single-component polyester rayon, rayon manufacturing, filament/thread forming, etc., to achieve the effect of excellent performance

Active Publication Date: 2020-05-05
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the prior art cannot be smoothly spun and processed to obtain fibers with good bulkiness and moisture absorption and perspiration performance, and to provide a fiber with good bulkiness and moisture absorption and perspiration performance that can be successfully spun and processed. Polyester cotton-like different shrinkage composite yarn and its preparation method

Method used

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  • A kind of polyester imitation cotton type differential shrinkage composite yarn and preparation method thereof
  • A kind of polyester imitation cotton type differential shrinkage composite yarn and preparation method thereof
  • A kind of polyester imitation cotton type differential shrinkage composite yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] A method for preparing polyester cotton-like heterogeneous shrinkage composite yarn, the specific steps are as follows:

[0085] (1) Spinning melt preparation;

[0086] (1.1) Preparation of modified polyester:

[0087] (a) Esterification reaction; mix terephthalic acid, ethylene glycol and 2-ethyl-2-methyl-1,3-propanediol with a molar ratio of 1:1.2:0.03 into a slurry, and add antimony trioxide , Titanium dioxide and triphenyl phosphate are mixed uniformly, pressurized in a nitrogen atmosphere to carry out the esterification reaction, the pressure is normal pressure, the temperature of the esterification reaction is 250 ℃, when the amount of water distilled in the esterification reaction reaches the theoretical 90% of the value is the end point of the esterification reaction, where the addition of antimony trioxide is 0.01% by weight of terephthalic acid, the addition of titanium dioxide is 0.20% by weight of terephthalic acid, and the addition of triphenyl phosphate It is 0...

Embodiment 2

[0097] A method for preparing polyester cotton-like heterogeneous shrinkage composite yarn, the specific steps are as follows:

[0098] (1) Spinning melt preparation;

[0099] (1.1) Preparation of modified polyester:

[0100] (a) Esterification reaction; mix terephthalic acid, ethylene glycol and 2,2-diethyl-1,3-propanediol with a molar ratio of 1:1.3:0.04 into a slurry, and add ethylene glycol antimony and titanium dioxide After mixing with trimethyl phosphate uniformly, the esterification reaction is carried out under pressure in a nitrogen atmosphere. The pressure is normal pressure, and the temperature of the esterification reaction is 260℃. When the amount of water distilled in the esterification reaction reaches the theoretical value 91% is the end point of the esterification reaction, where the addition of ethylene glycol antimony is 0.02% by weight of terephthalic acid, the addition of titanium dioxide is 0.21% by weight of terephthalic acid, and the addition of trimethyl ph...

Embodiment 3

[0110] A method for preparing polyester cotton-like heterogeneous shrinkage composite yarn, the specific steps are as follows:

[0111] (1) Spinning melt preparation;

[0112] (1.1) Preparation of modified polyester:

[0113] (a) Esterification reaction; mix terephthalic acid, ethylene glycol and 2-butyl-2-ethyl-1,3-propanediol with a molar ratio of 1:1.4:0.05 into a slurry, and add antimony acetate and titanium dioxide After mixing with trimethyl phosphite uniformly, the esterification reaction is carried out under pressure in a nitrogen atmosphere. The pressure is 0.1MPa and the temperature of the esterification reaction is 252°C. When the amount of water distilled in the esterification reaction reaches the theoretical value 92% is the end point of the esterification reaction. The addition of antimony acetate is 0.03% by weight of terephthalic acid, the addition of titanium dioxide is 0.23% by weight of terephthalic acid, and the addition of trimethyl phosphite is for 0.01% by we...

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Abstract

The invention relates to polyester cotton-like type differential shrinkage composite yarns and a preparation method thereof. The preparation method comprises the following steps: respectively preparing modified polyester POY (Pre-Oriented Yarn) and FDY (Fully Drawn Yarn) wires, and then compounding the POYs with the FDYs to prepare the polyester cotton-like type differential shrinkage composite yarns, wherein the color difference delta E of the prepared composite yarns is less than 0.200, a beam of POYs or FDYs extruded by the same yarn spraying plate simultaneously contains crossed single yarns and trefoiled single yarns; a molecular chain of the modified polyester comprises a branched diol chain segment, a structural formula of the branched diol is as follows: the formula (1) is shown inthe description; in the formula, R1 and R2 are straight-chain alkylene with carbon atomic number 1-3, R3 is alkyl with carbon atomic number 1-5, R4 is alkyl with carbon atomic number 2-5, and a matteagent dispersed in the modified polyester is amorphous titanium dioxide and amorphous silicon dioxide or a mixture of calcium carbonate and the amorphous silicon dioxide. The method disclosed by theinvention is simple and reasonable, and the prepared composite yarns have good fluffy, moisture absorption and perspiration performance.

Description

Technical field [0001] The invention belongs to the field of fiber preparation, and relates to a polyester cotton-like composite yarn with different shrinkage and a preparation method thereof. Background technique [0002] Since its inception, polyethylene terephthalate (PET fiber or polyester fiber) fiber has high breaking strength, high elastic modulus, moderate resilience, excellent heat setting, good heat and light resistance, and acid and alkali resistance. A series of excellent properties such as corrosion resistance are widely used in clothing and home textiles. [0003] With the development of modern textile technology and the continuous improvement of people’s living standards, people have put forward higher requirements for the output, performance and quality of chemical fibers used in clothing, decoration and industrial textiles. Therefore, in recent years, researchers have devoted themselves to chemistry. The research and development of new varieties of fibers can meet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/02D01D5/253D01F6/92D01F1/10C08G63/183C08G63/16C08G63/78
CPCC08G63/16C08G63/183C08G63/78D01D5/253D01F1/10D01F6/92D02G3/02D10B2331/04
Inventor 王山水卓怀智孙晓华马文平
Owner JIANGSU HENGLI CHEM FIBER
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