Shape memory fiber, manufacturing method thereof and textile product manufactured by shape memory fiber

Abstract

The present invention relates to a shape memory fiber, a method for manufacture thereof, and a textile made therefrom. The shape memory fiber is prepared from shape memory polyurethane that is prepared from a diisocyanate forming hard segments, a chain extender, and a long-chain polyol forming soft segments. The preparation process of the shape memory fiber is: preparing the shape memory polyurethane made of hard segments and soft segments; melt spinning the shape memory polyurethane by melting and extruding the polyurethane through a fiber spinneret to form filature, then cooling and solidifying the filature to obtain the shape memory fiber. The shape memory fiber of the invention has lower resilience than spandex under the same linear density, lower shape fixity than traditional shape memory materials, and increasing shape fixity with increasing elongation. The textiles made with it have good comfort characteristic, and can adapt to different shapes of body with single size.

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...

Examples

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...

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...

Examples

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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