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A shape memory fiber, its manufacturing method and textiles made therefrom

A technology for memory fibers and textiles, applied in the field of shape memory fibers, can solve the problems of spinning environment pollution, low recovery force and shape fixation, affecting human health, etc., and achieve the effects of high environmental friendliness and good comfort.

Active Publication Date: 2017-06-16
THE HONG KONG RES INST OF TEXTILES & APPAREL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a garment made of elastic fibers or elastic threads that exerts significant pressure on the human body and may affect the health of the human body in the prior art, and provides a garment with low recovery force and significant shape fixity that is suitable for use in clothing. Shape-memory fibers that exert less pressure on the human body after deformation and thus improve comfort and are harmless to human health; meanwhile, provide textiles with shape-memory functions made of such shape-memory fibers
[0005] Another technical problem to be solved by the present invention is to provide a method for manufacturing shape memory fibers with less environmental pollution and strong environmental friendliness, aiming at the problem of environmental pollution caused by dry or wet spinning in the prior art

Method used

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  • A shape memory fiber, its manufacturing method and textiles made therefrom
  • A shape memory fiber, its manufacturing method and textiles made therefrom
  • A shape memory fiber, its manufacturing method and textiles made therefrom

Examples

Experimental program
Comparison scheme
Effect test

example （1）

[0037] Example (1): Tg-type shape memory fiber 1 (SMF1)

[0038] Shape memory fibers were prepared by bulk polymerization using polycaprolactone diol (PCL) (molecular weight: 530), 1,4-butanediol and MDI, where PCL was used as the soft segment, MDI and 1,4-butanediol as a hard chain segment. The molar ratio of MDI, 1,4-butanediol and PCL was 1.5:0.5:1. The contents of soft segment and hard segment were 56% and 44%, respectively. First dehydrate PCL at 90°C for 2 hours under reduced pressure, add the measured 1,4-butanediol (through 4A molecular sieve to remove water) and MDI, stir rapidly for 15 seconds, and then pour into the pre-dried stainless steel tray Inside (the tray is coated with polytetrafluoroethylene), matured in a vacuum oven at 100 degrees for 24 hours, after being crushed, extruded from a single-screw extruder and pelletized. equipped with Measured by high performance liquid chromatography with a rEX refractive index detector; the obtained shape-memory poly...

example （2）

[0045] Example (2): Tg-type shape memory fiber 2 (SMF2)

[0046] Shape memory fibers were prepared by bulk polymerization using polybutylene adipate diol (PBA) (molecular weight 400), 1,4-butanediol and MDI, where PBA was used as the soft segment, MDI and 1,4 -Butanediol as hard segment. The molar ratio of MDI, 1,4-butanediol and PBA is 2:1:1. The soft segment content and the hard segment content are 40% and 60% respectively. First dehydrate the PBA at 90°C for 2 hours under reduced pressure, add the measured 1,4-butanediol (through 4A molecular sieve to remove water) and MDI, stir rapidly for 15 seconds, and then pour into the pre-dried stainless steel tray Inside (the tray is coated with polytetrafluoroethylene), matured in a vacuum oven at 100 degrees for 24 hours, after being crushed, extruded from a single-screw extruder and pelletized. equipped with The high-performance liquid chromatographic measurement of the rEX refractive index detector shows that the obtained s...

example （3）

[0054] Example (3): Tg-type shape memory fiber 3 (SMF3)

[0055] Shape memory fibers were prepared by bulk polymerization using polytetramethylene ether glycol (PTMEG) (molecular weight: 650), 1,4-butanediol and MDI, where PTMEG was used as the soft segment, MDI and 1,4-butane Diols serve as hard segments. The molar ratio of MDI, 1,4-butanediol and PTMEG was 1.5:0.5:1. The soft segment content and hard segment content were 61% and 39%, respectively. First dehydrate PTMEG at 90°C for 2 hours under reduced pressure, add measured 1,4-butanediol (water removed through 4A molecular sieve) and MDI, stir rapidly for 15 seconds, and then pour into the pre-dried stainless steel tray Inside (the tray is coated with polytetrafluoroethylene), matured in a vacuum oven at 100 degrees for 24 hours, after being crushed, extruded from a single-screw extruder and pelletized. equipped with The high-performance liquid chromatographic measurement of the rEX refractive index detector shows tha...

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Abstract

The invention relates to a shape-memory fiber, its manufacturing method and the textile made therefrom. Wherein, the shape-memory fiber is manufactured from shape-memory polyurethane, and the shape-memory polyurethane is prepared from diisocyanate and chain extender forming a hard segment, and long-chain polyol forming a soft segment. The manufacturing method of the above-mentioned shape-memory fiber is as follows: manufacturing shape-memory polyurethane composed of hard segment and soft segment; using melt spinning method to melt the shape-memory polyurethane and then extruding it through a fiber spinneret to obtain spinning, and then cooling and solidifying That is, the shape memory fiber is obtained. The shape memory fiber of the present invention has lower recovery force than spandex at the same linear density; it has lower shape fixity than traditional shape memory materials, and the shape fixity increases with the increase of elongation. The woven textile has good comfort, and a single size can adapt to different body shapes of the human body.

Description

technical field [0001] The present invention relates to a shape memory fiber (shape memory fiber, SMF), more specifically, to a shape memory fiber prepared by a melt spinning method, and to the polymer formula and melt spinning process required for preparing the fiber and application methods. The above-mentioned shape memory fibers can be used to make textiles with comfort and shape memory functions, which can be used for different body shapes in a single size and will not loosen after multiple wears. Background technique [0002] Human body contours are fluid, making it difficult to choose the best underwear or accessories for someone. Inappropriate clothing or accessories can also cause discomfort or even allergies, sometimes due to undue pressure on the body. This problem is exacerbated if the wearer intends to exercise vigorously. For example, traditional socks are often made from elastane or other synthetic fibers or a mix of both. The top of the sock is usually mad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/70C08G18/73C08G18/76C08G18/66C08G18/32D01D5/08
CPCC08G18/73C08G18/3206C08G18/4238C08G18/4277C08G18/4825C08G18/4854C08G18/6637C08G18/6674C08G18/7671D01D5/08D01F6/70
Inventor 胡金莲吕晶韩建平朱勇
Owner THE HONG KONG RES INST OF TEXTILES & APPAREL
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