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Aromatic polyester-aliphatic polyester block copolymerized ester fiber and purpose thereof

An aromatic polyester and polyester block technology, applied in the field of aromatic polyester-aliphatic polyester block copolyester fibers, can solve the problems of shrinkage, weakened crystallization ability, poor dimensional stability of copolyester fibers, etc.

Active Publication Date: 2017-04-26
CHINESE TEXTILE ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the introduction of the diol structure unit with side chains in the main chain of the polyester molecule, the regularity of the macromolecule is reduced, the crystallization ability is weakened, the amorphous region is increased, and the structure is loose, thus endowing the copolyester fiber disperse dye with normal pressure. However, the fiber dimensional stability of the copolyester is also poor, and it is easy to shrink to a large extent under boiling water conditions.

Method used

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  • Aromatic polyester-aliphatic polyester block copolymerized ester fiber and purpose thereof
  • Aromatic polyester-aliphatic polyester block copolymerized ester fiber and purpose thereof
  • Aromatic polyester-aliphatic polyester block copolymerized ester fiber and purpose thereof

Examples

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Effect test

Embodiment 1

[0066] The aromatic polyester-aliphatic polyester block copolyester chips were melted through a screw extruder at 280°C and then entered into the spinning assembly at a winding speed of 4200m / min to obtain aromatic polyester-aliphatic polyester block copolyester chips. Segment copolyester fully drawn yarn FDY. Among them, the speed of the heat roller GR1 is 1500 m / min and the temperature is 80°C, and the speed of the heat roller GR2 is 4250 m / min and the temperature is 140°C.

[0067] Aromatic polyester-aliphatic polyester block copolyester is formed by polycondensation of ethylene terephthalate oligomer with a degree of polymerization of 6 and polymethylpropylene adipate polyol with a number average molecular weight of 2000 , wherein the mass ratio of ethylene terephthalate oligomer and polymethylpropylene adipate polyol is 100:10, the intrinsic viscosity of the copolyester chip is 0.72dL / g, and the melting point is 229°C, The glass transition temperature is 71°C, the hue b ...

Embodiment 2

[0071] The aromatic polyester-aliphatic polyester block copolyester chips were melted through a screw extruder at 270°C and then entered into the spinning assembly at a winding speed of 3800m / min to obtain aromatic polyester-aliphatic polyester block copolyester chips. Segment copolyester fully drawn yarn FDY. Among them, the speed of the heat roller GR1 was 1200 m / min and the temperature was 72°C, and the speed of the heat roll GR2 was 3850 m / min and the temperature was 130°C.

[0072] Aromatic polyester-aliphatic polyester block copolyester is composed of ethylene terephthalate oligomer with a degree of polymerization of 2 and polysuccinate-1,2-propylene glycol with a number average molecular weight of 300 Alcohol polycondensation, in which the mass ratio of ethylene terephthalate oligomer and polysuccinate-1,2-propylene glycol ester polyol is 100:10, and the intrinsic viscosity of copolyester chips is 0.75dL / g, the melting point is 226°C, the glass transition temperature ...

Embodiment 3

[0076] The aromatic polyester-aliphatic polyester block copolyester chip is melted by a screw extruder at 300°C and then enters the spinning assembly, and the winding speed is 5200m / min to obtain an aromatic polyester-aliphatic polyester block Segment copolyester fully drawn yarn FDY. Among them, the speed of the heat roller GR1 was 1800 m / min and the temperature was 90°C, and the speed of the heat roll GR2 was 5250 m / min and the temperature was 160°C.

[0077] Aromatic polyester-aliphatic polyester block copolyester is composed of ethylene terephthalate oligomer with a degree of polymerization of 1 and polytrimethylpentanediol sebacate with a number average molecular weight of 1000 Alcohol polycondensation, wherein the mass ratio of ethylene terephthalate oligomer and polytrimethylpentanediol sebacate polyol is 100:3, and the intrinsic viscosity of copolyester chips is 0.62dL / g, the melting point is 250°C, the glass transition temperature is 77°C, the hue b value is 1, and ...

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Abstract

The invention belongs to the field of textile exploitation, and concretely relates to an aromatic polyester-aliphatic polyester block copolymerized ester fiber. The aromatic polyester-aliphatic polyester block copolyester is composed of polycondensation of an ethylene glycol terephthalate oligomer and fatty group polydiacid dihydric alcohol ester polyol through polycondensation, a chemical structure is shown as a specification, wherein, x is greater than or equal to 100, y is greater than or equal to 25, R1 is C2-C8 alkylene, R2 is C3-C8 alkylene; the randomness degree B of the aromatic polyester-aliphatic polyester block copolyester is 0.05-0.95. The aromatic polyester-aliphatic polyester block copolyester has characteristic of deep color dyeable of a disperse dye under normal pressure, has good size stability, can better mix with natural fiber such as cotton, wool and silk which cannot bear high temperature as well as elastic fiber such as spandex, and the weaving materials with excellent performance and abundant color can be obtained.

Description

technical field [0001] The invention belongs to the field of textile development, and specifically relates to an aromatic polyester-aliphatic polyester block copolyester fiber and its application. Background technique [0002] Polyester fiber has the advantages of high breaking strength, stable shape, good crispness, anti-wrinkle and non-ironing, easy to wash and dry, and is an ideal textile fiber. These excellent physical and mechanical properties of polyester fiber depend on its highly stereoregular macromolecular chain structure and condensed structure with high crystallinity and orientation, but these structural properties also endow polyester fiber with the defect that it is not easy to dye. At the same time, there are only less polar ester groups in the molecular structure of polyester fibers, which lack active groups that can bond with dyes, so they can only be dyed with disperse dyes. Disperse dyes are non-ionic dyes with large molecular size and low water solubilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/84C08G81/00D02G3/02D02G3/04
Inventor 邱志成金剑李志勇王颖廉志军刘玉来王雪
Owner CHINESE TEXTILE ACAD
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