WO2009000128A1 - Textile à mémoire de forme et son processus de traitement - Google Patents

Textile à mémoire de forme et son processus de traitement Download PDF

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Publication number
WO2009000128A1
WO2009000128A1 PCT/CN2007/070172 CN2007070172W WO2009000128A1 WO 2009000128 A1 WO2009000128 A1 WO 2009000128A1 CN 2007070172 W CN2007070172 W CN 2007070172W WO 2009000128 A1 WO2009000128 A1 WO 2009000128A1
Authority
WO
WIPO (PCT)
Prior art keywords
shape memory
textile
memory function
fiber
yarn
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2007/070172
Other languages
English (en)
Chinese (zh)
Inventor
Jinlian Hu
Yong Zhu
Yan Liu
H.P. Yau
Jing Lu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hong Kong Polytechnic University HKPU
Original Assignee
Hong Kong Polytechnic University HKPU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hong Kong Polytechnic University HKPU filed Critical Hong Kong Polytechnic University HKPU
Priority to PCT/CN2007/070172 priority Critical patent/WO2009000128A1/fr
Priority to CN2007801004760A priority patent/CN101883889A/zh
Publication of WO2009000128A1 publication Critical patent/WO2009000128A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres

Definitions

  • the invention relates to a textile having a shape memory function and a treatment method thereof. Background technique
  • Shape memory materials for apparel and dressing may be in the form of fibers, yarns or fabrics.
  • various documents including patent documents mainly focus on woven fabrics or nonwoven fabrics in which yarns having a shape memory function are bonded by an adhesive.
  • a patent for a woven fabric relating to a fiber having a shape memory function (U.S. Patent No. 5,128,197, July 1997) has different functions depending on a glass transition temperature (hereinafter referred to as: Tg).
  • Tg glass transition temperature
  • the woven fabric has a low glass transition temperature, is not deformed, wrinkled, and can be used for creases of slacks or wrinkles of shirts.
  • the woven fabric is made of a fiber having a shape memory function in which the glass transition temperature is higher than normal temperature, so that the hand feel is hard at normal temperature.
  • nonwoven fabric which is formed by bonding a resin fiber having shape memory properties and a resin having shape memory properties by using an adhesive.
  • the thickness is not uniform, and it is difficult to uniformly distribute the adhesive, and since the adhesive is expensive, the cost is also high.
  • Italy has reported a smart shirt with sleeves that automatically pleat in the summer.
  • the shirt is made of Nitinol core-spun yarn, which is very hard to handle and has a high production cost due to the need to use expensive nickel-titanium alloy.
  • a number of patents and various types of literature have reported the use of shape memory alloys in fabric weaving.
  • the present invention provides a method of processing a textile having a shape memory function, and a series of textiles having a shape memory function made of a material treated by the method.
  • the textile solves the problems of the existence of conventional nonwoven fabrics and woven fabrics made of shape memory polymers.
  • the textiles mentioned in the present invention include: various types of fibers, yarns, fabrics, nonwoven fabrics, and various garments and the like.
  • the method for processing a textile having a shape memory function according to the present invention is: being in a relaxed state or a tension state
  • the textile is heat treated for 1 to 15 minutes.
  • the internal stress of the textile is removed, and the purpose of improving the setting rate and recovery rate of the textile is achieved, so that the shape memory-enabled textile obtains good dimensional stability, soft hand feeling and low heat shrinkage.
  • the heat treatment may be: placing the textile in a relaxed state or a tension state in a container for 3 to 15 minutes; or: placing the textile in a relaxed state or a tension state in an oven or pressure In the ironing machine, the temperature is controlled at 60 ⁇ 175° C for 1 ⁇ 10 minutes.
  • the shape memory-retaining textile is a fiber produced by wet spinning, dry spinning, melt spinning, and reaction spinning using a shape memory polymer.
  • the fibers may be a single filament, a plurality of filaments, and an artificial staple.
  • the textile having shape memory function is a yarn having a shape memory function.
  • the textile having shape memory function is a fabric having a shape memory function.
  • the present invention also provides a textile having a shape memory function which is obtained by the above method, and has a setting rate of 95 to 99% and a recovery rate of 90 to 99%.
  • the fibers, yarns, and fabrics described above When heated to a temperature above the shape memory transition temperature, the fibers, yarns, and fabrics described above are easily restored to their original shape. Thus, in this case, the fabric can be applied to wrinkles, deformation recovery, and many exotic designs in the prior art. detailed description
  • the processing method of the present invention can be used for treating existing spun fibers having a shape memory function to improve the setting rate and recovery rate of the fibers and the shape memory transition temperature, and can also be used for utilizing existing shapes.
  • the fiber-spun yarn of the memory function is processed to improve the dimensional stability and shape memory effect of the yarn. It can also be used to treat fabrics made from existing fibers or yarns with shape memory to improve dimensional stability, hand and hot water shrinkage and shape memory.
  • Step A mixing a difunctional polyglycol with a difunctional isocyanate to form a first mixture; and the difunctional isocyanate is from the next group Choice: isophorone diisocyanate,
  • difunctional polyglycols are selected from the group consisting of: polyethylene diadipate, polyethylene oxalate, poly- ⁇ -caprolactone, poly Tetrahydrofuran, polybutylene adipate, polyepoxyhydrazine, and mixtures thereof.
  • Step ⁇ Heat the first mixture to 60 to 90 ° C for 1 to 4 hours.
  • Step C adding a chain extender to the heated first mixture, controlling the temperature at 60 to 90 ° C for 1 to 4 hours to complete the polymerization reaction; wherein the chain extender is selected from the group consisting of: 3-propanediol, 1,4-butanediol, 1,2-ethanediol, 4,4'-dihydroxybiphenyl, 4,4'-dimethylolpropionic acid, hydrazine, hydrazine-bis(2- Hydroxyethyl)-isonicotinamide, hydrazine-methyldiethanolamine, ethoxylated bisphenolphthalein, 1,2-diaminoethane, 1,2-diaminopropane, and mixtures thereof.
  • the chain extender is selected from the group consisting of: 3-propanediol, 1,4-butanediol, 1,2-ethanediol, 4,4'-dihydroxybiphenyl, 4,4'-dimethyl
  • the total amount of the bifunctional isocyanate and the chain extender and the difunctional polyglycol molar ratio is 2: 1 to 1:1;
  • the solvent is selected from the group consisting of: dimethylformamide, hydrazine, hydrazine dimethylacetamide, 1-methyl
  • the difunctional polyglycol has a molar weight of from 500 to 1,000.
  • Step ⁇ ' The poly ⁇ -caprolactone-4000 (PCL-4000) is temperature-controlled under vacuum 70. C heating for 12 hours;
  • Step ⁇ ' Remove the diphenylmethane diisocyanate (MDI) from the freezer and place it in a fume hood for later use; then dehumidify it in a vacuum oven at 70 ° C for 1 hour;
  • the dimer diphenylmethane diisocyanate is filtered to remove precipitates and impurities therein for use;
  • Step C' The molecular chain extender was dehumidified at a temperature of 100 ° C for 1 hour.
  • Step D' Strictly control the molar ratio of the total amount of poly- ⁇ -caprolactone to 1, 4-butanediol to diphenylformamidine diisocyanate to 1 : 1, and pour them into a high-speed stirring head, respectively. The mixture was then sprayed into a twin screw extruder for further reaction. Finally stack the polyurethane.
  • Circulating air jet spinning speed linear density boiling water shrinkage strength gas temperature number (m/min) (dtex) (after treatment) (cn/te)
  • the fibers mentioned in Table 1, Table 2 and Table 3 have a shape memory transition temperature between 10 °C and 100 °C.
  • the shape memory curve and intensity were measured by the Instom 4466 material analyzer. When the shape was changed to 100%, the setting rate reached 95% and the recovery rate reached 90%.
  • the fiber sample 1 having the shape memory function in Table 1 was obtained by wet spinning from a shape memory polymer solution.
  • the tensioned staple fiber is steamed for 10 minutes, the shape memory function fiber has good dimensional stability, a soft hand and a low hot water shrinkage. Its setting rate reached 99% and the response rate reached 95%.
  • the fiber sample 2 in Table 1 was obtained by wet spinning from a shape memory polymer solution.
  • the fiber sample was baked in an oven at a temperature of 120 ° C for 15 minutes to remove the stress, and then cut into a 38 mm wool fiber segment. Its setting rate reached 99% and the response rate reached 95%.
  • Example (3) The fiber sample 1 in Table 2 was obtained by melt spinning from a shape memory slice. After the fiber was baked in an oven at a temperature of 175 ° C for 1 minute, the fiber had excellent dimensional stability and a soft hand. The setting rate reached 99% and the response rate reached 95%. The shape memory transition temperature of the fiber was reduced from 60 ° C to 30 D C.
  • the fiber sample 2 in Table 2 was obtained by melt spinning from a shape memory slice.
  • the fiber is spun as a core yarn and a cotton fiber.
  • the core spun yarn was heat-treated at 60 ° C for 5 minutes under tension in an oven to eliminate internal stress.
  • the treated yarn is woven into a fabric, the dimensional stability of the fabric is improved during use, the cloth surface is flat, and there is no wrinkling or blistering caused by heat shrinkage.
  • the untreated core spun yarn can also be directly woven to form a fabric.
  • the fabric was treated under tension in a press for 3 minutes at a temperature of 150 ° C to achieve dimensional stability.
  • Table 1 lists the comparison values of the boiling water shrinkage ratio and the hot air shrinkage ratio of the samples 1 to 7 obtained by the solution spinning method before and after the heat treatment. It can be seen from the above that the boiling water shrinkage rate and the hot air shrinkage ratio of the samples 1 to 7 are greatly reduced by the heat treatment according to the method of the present invention. Further, the boiling water shrinkage of each of the samples obtained by melt spinning is also shown in Tables 2 and 3. It can also be seen from the above that each sample has a lower boiling water shrinkage after treatment by the method of the present invention.
  • the fiber having the shape memory function after the above heat treatment can be used for a wide variety of purposes.
  • the following examples are yarns having a shape memory function made of the above heat-treated fibers.
  • the fiber and the ordinary cotton fiber are spun into a core-spun yarn in which a fiber having a shape memory function is used as a core and a common cotton fiber is used as a cladding.
  • the core yarn changes from a straight line to a curve.
  • the fiber quickly returns to its original state.
  • the fiber and the polyester bulk yarn of the embodiment (1) are spun into a loop yarn, and the yarn maintains a linear shape at a normal temperature, and is heat-treated in a relaxed state, and the temperature is higher than a fiber transition having a shape memory function.
  • the aforementioned fibers are deformed and curled, and the polyester fluffy yarn is expanded to form a loop on the surface of the blended yarn.
  • the temperature is below the temperature, the yarn is restored to its original state.
  • the fiber in the example (4) and the ordinary natural fiber or synthetic fiber were spun into a sewing thread at a mixing ratio of 90 to 3/3 to 90%. When heated above the transition temperature, the sewing mark is fixed and the stability is improved.
  • the fiber having the shape memory function and the ordinary natural fiber in Example (3) were spun into a friction yarn in which a fiber having a shape memory function was used as a core and a natural fiber was used as a cladding.
  • the yarn is heated to a temperature above the fiber transition temperature having a shape memory function, which is deformed to curl and then cooled in a crimped shape to a temperature below the transition temperature.
  • the yarn obtained a curled shape. After repeated stretching, the yarn is straightened. When heated to a temperature above the transition temperature, the yarn returns to a curled shape.
  • the fiber and/or yarn having the shape memory function after the above heat treatment can be used for a wide variety of purposes, and the following examples are fabrics and garments having a shape memory function made of the heat-treated fibers and/or yarns described above. .
  • Fabrics made of fibers and yarns with shape memory function are made by weaving, knitting and non-woven techniques.
  • Nonwoven techniques include needling, spunlacing, melt blowing, stitching, gluing, and the like.
  • the pile of the corduroy is formed and shaped by cutting the pile and heat-treating at a temperature higher than the transition temperature of the fiber having shape memory function in the pile warp yarn.
  • the corduroy pile has better anti-fall properties. Even if the fabric is pressed or fluffed during use, the pile can be re-erected when heated to a temperature above the transition temperature.
  • the tights were knitted using the friction yarns of Example (8) and shaped at a temperature above the transition temperature to obtain the original size.
  • the bra can be stretched for easy wearing.
  • the aforementioned fiber has a transition temperature lower than the body temperature, so that when worn on the body, the bra is gradually tightened until it returns to its original size to achieve the desired body-wound effect.
  • the braid having the shape memory function in Example (1) was used to form a braid, and was set at a temperature higher than the transition temperature.
  • the shape stability and hand of the woven fabric are better than those of other synthetic fibers.
  • the fiber having the shape memory function and the cotton fiber in Example (4) were bonded to each other to form a nonwoven fabric. Bonding the fiber having the shape memory function and the cotton fiber into a net, and when the temperature is higher than a temperature at which the fiber having the shape memory function starts to flow, using the fiber having the shape memory function having the viscosity
  • the web is configured.
  • the nonwoven has a better hand and a more uniform thickness and length.
  • the production cost is also much lower than that of nonwoven fabrics made of short fibers and shape memory polymers (see JP-A No. 252353/1986). Even if wrinkles and deformation occur during cleaning or long-term storage, the nonwoven fabric can easily return to its original shape when heated to a temperature higher than the transition temperature, so it is very suitable for use in collars, Cuffs, shoulders and bras.
  • the woven fabric was made using the yarn of Example (6).
  • the fabric was originally in a flat state. When heated to a temperature above the transition temperature, the yarn becomes a looped yarn and the fabric expands. When stretched in a straight line and cooled to a temperature below the transition temperature, the fabric returns to its original flat appearance.
  • a styling sports bra is made by knitting the yarn in the embodiment (5).
  • the bodice has a transition temperature of approximately 30 ° C.
  • the bra is tightened, thereby effectively exercising the wearer's body. Protected, but the wearer does not feel too tight or uncomfortable.
  • the cotton yarn was used as the warp yarn and the weft yarn, and the core yarn in the example (5) was woven as a pile warp yarn to form velvet.
  • the velvet pile is formed and shaped by cutting the pile and heat-treating at a temperature higher than the transition temperature of the shape memory function fiber in the pile warp yarn.
  • the pile of the velvet has good anti-falling properties. Even if the velvet is pressed or fluffed during use, the pile can be re-erected when heated to a temperature above the transition temperature.
  • a spun-laid nonwoven fabric is formed using a melt of a shape memory polymer.
  • the shape memory polymer is forced into a high velocity air stream or other gas stream by a spinneret system.
  • the formed yarn is laid on a support to form a web, which may be a net drum or a conveyor belt.
  • the extruded monofilament is withdrawn and internally oriented through a roll or high velocity gas stream prior to web formation to increase the strength of the shape memory nonwoven.
  • the needle-punched nonwoven fabric was formed using the fibers having the shape memory function in Example (4).
  • the fibers with shape memory function are placed in the inclined grid circle and are placed on the larger grid circle in an intersecting manner, which moves along the right angle direction toward the original direction of the cross-laying web. .
  • the barbed needle is then pushed through the cross-over web to drive a portion of the fiber through the mesh; the fiber remains in it when the needle is withdrawn.
  • a fabric having a shape memory function is formed from two layers of fabric having a shape memory function, the fabric having a shape memory function comprising a spunlaid nonwoven fabric of the embodiment (16) with a scrim substrate and an embodiment (17) Acupuncture nets and slender fabric components.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)

Abstract

La présente invention concerne un processus de traitement pour un textile à mémoire de forme. Le processus de traitement comporte le traitement thermique du textile à l'état de tension ou à l'état de relaxation pendant 1 à 15 minutes. Par le biais du traitement, la contrainte interne de la fibre peut être relâchée, de manière à améliorer le taux d'encollage et le taux de récupération de la fibre, et la température de transition de mémoire de forme du textile peut être modifiée pour que la fibre à mémoire de forme présente une excellente stabilité dimensionnelle, un toucher doux et un pourcentage moindre de contraction par refroidissement.
PCT/CN2007/070172 2007-06-25 2007-06-25 Textile à mémoire de forme et son processus de traitement Ceased WO2009000128A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2007/070172 WO2009000128A1 (fr) 2007-06-25 2007-06-25 Textile à mémoire de forme et son processus de traitement
CN2007801004760A CN101883889A (zh) 2007-06-25 2007-06-25 具有形状记忆功能的纺织品及其处理方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/070172 WO2009000128A1 (fr) 2007-06-25 2007-06-25 Textile à mémoire de forme et son processus de traitement

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WO2009000128A1 true WO2009000128A1 (fr) 2008-12-31

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PCT/CN2007/070172 Ceased WO2009000128A1 (fr) 2007-06-25 2007-06-25 Textile à mémoire de forme et son processus de traitement

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CN (1) CN101883889A (fr)
WO (1) WO2009000128A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102691118A (zh) * 2011-03-23 2012-09-26 香港理工大学 形状记忆中空纤维的制备方法
CN103160948A (zh) * 2013-04-07 2013-06-19 苏州聚复高分子材料有限公司 快速成型形状记忆高分子材料及其制备方法和应用

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04136214A (ja) * 1990-09-27 1992-05-11 Nippon Zeon Co Ltd 形状記憶性樹脂組成物からなる繊維、繊維の製造方法、人工毛髪および織物
US5128197A (en) * 1988-10-17 1992-07-07 Mitsubishi Jukogyo Kabushiki Kaisha Woven fabric made of shape memory polymer
JPH08246310A (ja) * 1995-03-15 1996-09-24 Nippon Ester Co Ltd 形状記憶性成形体
CN1145602A (zh) * 1995-01-24 1997-03-19 东丽株式会社 聚酯制品及其制造方法
JPH09143847A (ja) * 1995-11-22 1997-06-03 Ichikawa Woolen Textile Co Ltd 形状記憶性を有するニードルフェルト
CN1706998A (zh) * 2004-06-10 2005-12-14 香港理工大学 一种形状记忆纤维及其制备方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5128197A (en) * 1988-10-17 1992-07-07 Mitsubishi Jukogyo Kabushiki Kaisha Woven fabric made of shape memory polymer
JPH04136214A (ja) * 1990-09-27 1992-05-11 Nippon Zeon Co Ltd 形状記憶性樹脂組成物からなる繊維、繊維の製造方法、人工毛髪および織物
CN1145602A (zh) * 1995-01-24 1997-03-19 东丽株式会社 聚酯制品及其制造方法
JPH08246310A (ja) * 1995-03-15 1996-09-24 Nippon Ester Co Ltd 形状記憶性成形体
JPH09143847A (ja) * 1995-11-22 1997-06-03 Ichikawa Woolen Textile Co Ltd 形状記憶性を有するニードルフェルト
CN1706998A (zh) * 2004-06-10 2005-12-14 香港理工大学 一种形状记忆纤维及其制备方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102691118A (zh) * 2011-03-23 2012-09-26 香港理工大学 形状记忆中空纤维的制备方法
CN103160948A (zh) * 2013-04-07 2013-06-19 苏州聚复高分子材料有限公司 快速成型形状记忆高分子材料及其制备方法和应用
CN103160948B (zh) * 2013-04-07 2015-11-25 苏州聚复高分子材料有限公司 快速成型形状记忆高分子材料及其制备方法和应用

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