CN106854777A - A kind of crimping by stretching composite fibre and preparation method thereof - Google Patents
A kind of crimping by stretching composite fibre and preparation method thereof Download PDFInfo
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- CN106854777A CN106854777A CN201611010708.0A CN201611010708A CN106854777A CN 106854777 A CN106854777 A CN 106854777A CN 201611010708 A CN201611010708 A CN 201611010708A CN 106854777 A CN106854777 A CN 106854777A
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- polymer
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Multicomponent Fibers (AREA)
Abstract
The invention discloses a kind of crimping by stretching composite fibre, described composite fibre is that polymer A and polymer B are composited, and described polymer A and polymer B have different glass transition temperatures.Polymer composite fibrous the formed wrapped configuration of crimping by stretching prepared by the present invention shows the wrapped configuration feature of natural wool, with Curl response rate is high, the performance such as curling stability is good；Compared with the existing composite fibre from curling, due to being crimped in bicomponent fibre on the outside of employ fatty polyamide elastomeric material, more excellent tensile elasticity and elastic recovery properties is obtained, while feeling more affine with contact human skin；Contain polyethers and/or polyester group in polyamide elastomeric materials simultaneously, there is good compatibility with polyester material, fatty polyamide material.The preparation method of the fiber is high speed single step mode, and production efficiency is high, low cost.
Description
Technical field
The invention belongs to technical field of polymer materials, specifically, it is related to a kind of crimping by stretching composite fibre and its system
Preparation Method.
Background technology
Polyester, Fypro have turned into the big chemical fibre kind of China first and second, be widely used in clothes, decoration and
In fabrics for industrial use, as weaving one of basic raw material, for developing various clothes, household articles (such as window screening, mosquito net
Deng), various case and bag, rain gear textile, Peng Gai textiles etc..Polyamide filaments fiber includes drafting silk, adds elater and sky
The kinds such as gas textured filament, wherein adding elater to be widely used in clothes, hosiery and household articles.Current polyamide adds the production of elater
Mode is realized using two step method, i.e., prepare preoriented yarn by molten polyamide, spinning, preliminary draft, winding etc. first, so
Prepared plus elater with the false-twisting device added in bullet equipment afterwards.The manufacture method of this plus elater is primarily present lacking for two aspects
Point：1st, low production efficiency, because using two-step method, from preoriented yarn to elater interrupted midway is added, so not only the production cycle is long, and
And recruitment is more.2nd, wrapped configuration less stable, is crimped due to being crimped using false twisting mode, and being solidified by heat setting
Form, causes wrapped configuration less stable, in subsequent production processing, usually can become amount of crimp because of factors such as external force
Change, influence lofting effect.
Pertinent literature on bicomponent fibre much reports there is the U.S. with the process patent for preparing self-crimping fiber
Patent the 3454460th and the 3671379th, WO41/5357A1, JP2002-56918A, ZL03814821.8, ZL03814823.4,
ZL200710143441.7 aforementioned patents discloses poly- using PET, PTT etc.
The bicomponent fibre of one or more and preparation method in compound.
CN201510270571.1 also discloses that a kind of polyester elastomer/PET composite elastic fibers and preparation method thereof, is
First by terephthalic acid (TPA), BDO, both-end hydroxy polyethers according to a certain ratio, under catalyst action, through the direct ester that depressurizes
Change, remelted polycondensation obtains polyester elastomer, obtained polyester elastomer and PET are then wound into one-step method work with spin-drawing
Skill is obtained.
From above-mentioned patent disclosure, the preparation from curling composite fibre is to contain physical characteristic not using two kinds
With polymeric material prepare, both polymer can be identical, or different, but be defined as same polyester
The polymer of classification, primarily to ensureing that the bi-component of parallel construction produces separation when rear road textile dyeing and finishing is processed.But
Bicomponent fibre prepared by these methods is due to using polyester material, even if PTT is used alone
This less polyester material of modulus, the degree of roughness of its feel is also unable to reach degree of great satisfaction.
For these reasons, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of crimping by stretching composite fibre, and the composite fibre has permanent curl bullet
Property effect and good contact human skin sense, to achieve the above object, the present invention is adopted the following technical scheme that：
The invention discloses a kind of crimping by stretching composite fibre, wherein, described composite fibre is polymer A and polymer
B is composited, and described polymer A and polymer B have different glass transition temperatures.
General fibre and its fabric are when thermal finalization is carried out, if it is desired to which the fixed effect for obtaining stabilization is with lower
The composite fibre of shrinkage factor, usual technical staff can realize that its general principle is using under high temperature by improving setting temperature
Low-shrinkage realize permanent set effect.The present inventor is by substantial amounts of experiment discovery, the size master of fiber percent thermal shrinkage
The difference of the glass transition temperature of the heat setting temperature and fiber of fiber is depended on, heat setting temperature turns with fibrous glassization
Temperature difference is bigger, and the percent thermal shrinkage that fiber is produced when being heat-treated through post-processing is smaller, and this experiment conclusion can be from fiber
Internal stress and interaction between supramolecular structure and fiber molecule are explained.Therefore, two kinds of present invention selection has
The high polymer of different glass transition temperatures, by designing the architectural feature of bilateral, is capable of achieving the different height of bilateral shrinkage factor
The preparation of polymers composite fibre so that the fiber crimp for being formed during fabric dyeing and finishing post-processing treatment and use not
Destructible, while having good Curl and curling stability.
Two kinds of polymer of the bi-component of the prior art from crimping composite fibre is generally other using same polyesters
Polymer, the present invention uses two kinds of polymer of different nature, and has different glass transition temperatures using two kinds
Polymer, by controlling the glass transition temperature of two kinds of polymer, can overcome existing skill with the more preferable fiber of forming properties
The limitation of art.
Further, composite fibre of the present invention is bilateral embedded structure, the outer side edges of composite fibre curling it is poly-
Glass transition temperature of the glass transition temperature of compound A less than the polymer B of the inner side edge of composite fibre curling.
If it is intended to obtaining the more preferable effects of physical property such as feel, it is necessary to the choosing to being designed property of bicomponent material
Select, the outside of special bicomponent composite fibre curling, selection feels excellent material with contact human skin, while the material will have
There is good elasticity.In order to ensure that composite fibre bilateral component does not produce separation, the phase of bicomponent material when post-processing is processed
Capacitive and boundary strength are also required.
Described polymer B and the difference of the glass transition temperature of polymer A are more than or equal to 20 DEG C.
The present inventor is by substantial amounts of experiment discovery, the thermal finalization temperature for depending mainly on the size of fiber of fiber percent thermal shrinkage
The difference of the glass transition temperature of degree and fiber, heat setting temperature is bigger with fibrous glass transition temperature difference, fiber warp
The percent thermal shrinkage that post-processing is produced when being heat-treated is smaller, and this experiment conclusion can be from Fiber super-molecular structure and fiber molecule
Between internal stress and interaction explained.When the difference of the glass transition temperature of two kinds of polymer material is more than 20 DEG C
When, under identical heat setting temperature, there were significant differences for two kinds of percent thermal shrinkage values of fibrous polymeric materials, therefore, in heat
The lower fiber of effect is crimped to the side of low-shrinkage.
Further, described polymer B and the mass fraction ratio of polymer A are 50:50-80:20.
Due to the temperature value that the drawing and setting temperature of composite fibre in preparation process is determination, i.e. bi-component high polymer experience
Identical setting temperature, therefore, so when composite fibre again passes by heat treatment, due to two kinds of differences of high polymer
Percent thermal shrinkage, fiber can vertically occur the same wrapped configuration of similar wool fiber, and curling quantity, curling size depend on
Size of the difference, component ratio in the glass transition temperature of two kinds of polymer component etc..
Further, described polymer B is polyester and/or fatty polyamide.
Further, described polyester is the blend of one or more in PET, PBT, PTT；Described aliphatic poly
Acid amides is one or more in polyamide 6, polyamide 66, polyamide 56, polyamide 610, polyamide 1012, polyamide 1212
Blend.
Further, described polymer A is polyamide elastomer；It is preferred that, described polyamide elastomer is aliphatic
Polyamide and polyethers and/or the copolymer of polyester.
Using fatty polyamide elastomer as material outside layer, fatty polyamide elastomer is aliphatic to the present invention
The copolymer of polyamide and polyethers and/or polyester, the presence of amide group causes the material to have good water imbibition in strand,
Due to also having amide groups in human body protein, the material has good pro-skin performance；On the other hand, polyethers is contained in material
And/or polyester group, it is respectively provided with good compatibility with polyamide and polyester.
Another object of the present invention is to provide a kind of preparation method of crimping by stretching composite fibre, described preparation method
Comprise the following steps：
(1) after polymer A is dried, carry out heating plasticizing and obtain spinning melt A；
(2) after polymer B is dried, carry out heating plasticizing and obtain spinning melt B；
(3) spinning melt A obtained above and spinning melt B are passed through into each corresponding pipeline respectively, after metering,
Inject simultaneously composite spining module carry out spinning, cool down, oil, drawing and setting, overfeeding laxation shaping and curling, obtain described
Crimping by stretching composite fibre.
Further, the stretching ratio of the drawing and setting in step (3) is 1.50~1.75；Drawing and setting temperature is by following
Formula is calculated, Tl=Tg+ 20 DEG C, wherein, T1It is drawing and setting temperature, TgIt is the glass transition temperature of polymer B.
From principle, crimping by stretching composite fibre is to be prepared into the fibre with bilateral structure morphological feature by spinning
Dimension.It is that macromolecular is axially orientated along fiber in making high polymer by stretching mode that high polymer material fiber prepares shaping, so
Obtained by being shaped under uniform temperature afterwards, but this of fiber is fixed to temporary, and it is subject to the bar of fiber post-processing process
Part influences, and is especially influenceed larger by temperature, and when post-processing temperature is higher than fiber setting temperature, fiber will occur disorientation row
From the point of view of the macro manifestations of fiber, to show as the thermal contraction phenomenon of fiber.The thermal contraction numerical values recited of fiber, with undulation degree
Property, fiber heat setting temperature are relevant alone for material, and the applicant has found by substantial amounts of experiment, the size master of fiber percent thermal shrinkage
To depend on the difference of the heat setting temperature with fibrous glass transition temperature of fiber.Heat setting temperature changes with fibrous glassization
Temperature gap is bigger, and the percent thermal shrinkage that fiber is produced when being heat-treated through post-processing is smaller, and this experiment conclusion can be super from fiber
Mechanical function between molecular structure and fiber molecule explained, this be also fiber and its fabric when thermal finalization is carried out,
The fixed effect that the present invention obtains stabilization is the fiber of the shrinkage factor for obtaining lower, and the present invention is by improving setting temperature come real
It is existing.
Further, the over feed rate(OFR) of overfeeding laxation shaping is 5~15% in step (3)；Overfeeding laxation shaping temperature is pressed
Row formula is calculated, Td=T1+ (10~60 DEG C), wherein, TdIt is overfeeding laxation shaping temperature, T1It is drawing and setting temperature；Wherein, Td
Temperature compares T1Temperature is high 10 DEG C~and 60 DEG C.
Compared with prior art, beneficial effects of the present invention are as follows：Crimping by stretching polymer prepared by the present invention is combined
Fiber, compared with existing plus elater, the wrapped configuration for being formed shows the wrapped configuration feature of natural wool, with curling bullet
The property performance such as response rate is high, curling stability is good；Compared with the existing composite fibre from curling, due to being crimped in bicomponent fibre
Outside employs fatty polyamide elastomeric material, obtains more excellent tensile elasticity and elastic recovery properties, while with
Contact human skin's sense is more affine；Contain polyethers and/or polyester group in polyamide elastomeric materials simultaneously, with polyester material
Material, fatty polyamide material have good compatibility.The preparation method of the fiber is high speed single step mode, production efficiency
High, low cost.
Brief description of the drawings
Fig. 1：Bilateral embedded structure spinneret plate structure schematic diagram in the present invention.
Specific embodiment
Embodiment in following embodiments can be further combined or replace, and embodiment is only to of the invention
Preferred embodiment is described, and not the spirit and scope of the present invention are defined, and is not departing from design philosophy of the present invention
Under the premise of, the various changes and modifications that professional and technical personnel in the art make to technical scheme belong to this hair
Bright protection domain.
Spinneret plate structure schematic diagram in the present invention is as shown in Figure 1.
Embodiment 1
(1) polyethylene terephthalate (PET) pellet is inserted in drying kettle, drying temperature is 105 DEG C, when drying
Between be 4.5h, dry after pellet moisture content be 30ppm, by dried PET pellets feed spiro rod plasticizing extruder, heated
Plasticizing, PET pellet screw extruders plasticization temperature is 250 DEG C, 256 DEG C, 260 DEG C, 280 DEG C, 290 DEG C, obtains PET spinning and melts
Body；
(2) polyester-type polyamide elastomer pellet is inserted in drying kettle, is dried under the conditions of nitrogen environment, dried
Temperature is 70 DEG C, and drying time is 10h, and pellet moisture content is 20ppm after drying, by dried polyamide elastomer pellet point
Not Wei Ru spiro rod plasticizing extruder, carry out heating plasticizing, polyester-type polyamide elastomer pellet screw extruder plasticization temperature is
125 DEG C, 130 DEG C, 133 DEG C, 135 DEG C, 140 DEG C, obtain polyamide elastomer spinning melt；
(3) the spinning melt A and spinning melt B that will be obtained respectively by each self-corresponding pipeline, by PET spinning melts and
Polyamide elastomer spinning melt quality parts ratio is 50：50 are measured respectively, while inject being carried out in composite spining module
Composite spinning, is to carry out set-stretching under the conditions of 1.65, temperature is 110 DEG C in stretching ratio after being cooled to fibre, afterwards, is fed
Enter in heat-shaping device, over feed rate(OFR) is 10%, heat setting temperature is 120 DEG C, carry out sub-wire coiling and molding, obtain crimping by stretching
Composite fibre.
Embodiment 2
(1) PA66 polyamide pellets are inserted in drying kettle, drying temperature is 95 DEG C, and drying time is 6h, grain after drying
Material moisture content is 30ppm, and dried PA66 polyamide pellet is fed into spiro rod plasticizing extruder, carries out heating plasticizing, PA66
Polyamide pellet screw extruder plasticization temperature is 245 DEG C, 250 DEG C, 254 DEG C, 260 DEG C, 280 DEG C, obtains the spinning of PA66 polyamide
Silk melt；
(2) polyester-type polyamide elastomer pellet is inserted in drying kettle, is dried under the conditions of nitrogen environment, dried
Temperature is 70 DEG C, and drying time is 10h, and pellet moisture content is 20ppm after drying, by dried polyamide elastomer pellet point
Not Wei Ru spiro rod plasticizing extruder, carry out heating plasticizing, polyester-type polyamide elastomer pellet screw extruder plasticization temperature is
125 DEG C, 130 DEG C, 133 DEG C, 135 DEG C, 140 DEG C, obtain polyamide elastomer spinning melt；
(3) the spinning melt A and spinning melt B that will be obtained pass through each self-corresponding pipeline respectively, by PA66 spinning melts
It is 80 with polyamide elastomer spinning melt quality parts ratio：20 are measured respectively, while injecting enter in composite spining module
Row composite spinning, is to carry out set-stretching under the conditions of 1.70, temperature is 100 DEG C in stretching ratio after being cooled to fibre, afterwards,
In feeding heat-shaping device, over feed rate(OFR) is 8%, and heat setting temperature is 110 DEG C, carries out sub-wire coiling and molding, obtains stretch rolls
Bent composite fibre.
Embodiment 3
(1) PTT (PTT) pellet is inserted in drying kettle, drying temperature is 100 DEG C, when drying
Between be 4.5h, dry after pellet moisture content be 30ppm, by dried PTT pellets feed spiro rod plasticizing extruder, heated
Plasticizing, PTT pellet screw extruders plasticization temperature is 245 DEG C, 255 DEG C, 260 DEG C, 275 DEG C, 285 DEG C, obtains PTT spinning and melts
Body；
(2) polyester-type polyamide elastomer pellet is inserted in drying kettle, is dried under the conditions of nitrogen environment, dried
Temperature is 70 DEG C, and drying time is 10h, and pellet moisture content is 20ppm after drying, by dried polyamide elastomer pellet point
Not Wei Ru spiro rod plasticizing extruder, carry out heating plasticizing, polyester-type polyamide elastomer pellet screw extruder plasticization temperature is
125 DEG C, 130 DEG C, 133 DEG C, 135 DEG C, 140 DEG C, obtain polyamide elastomer spinning melt；
(3) the spinning melt A and spinning melt B that will be obtained respectively by each self-corresponding pipeline, by PTT spinning melts and
Polyamide elastomer spinning melt quality parts ratio is 60：40 are measured respectively, while inject being carried out in composite spining module
Composite spinning, is to carry out set-stretching under the conditions of 1.70, temperature is 100 DEG C in stretching ratio after being cooled to fibre, afterwards, is fed
Enter in heat-shaping device, over feed rate(OFR) is 8%, heat setting temperature is 110 DEG C, carry out sub-wire coiling and molding, obtain crimping by stretching
Composite fibre.
The composite fibre prepared according to standard GB/T/14338 pair embodiment 1-3 carries out performance test, test result row
It is shown in Table in 1.
The preparation method of the composite fibre of embodiment 4-11 is shown in Table with embodiment 1, the various conditional parameters in preparation process
2。
The composite fibre prepared according to standard GB/T/14338 pair embodiment 4-11 carries out performance test, test result row
It is shown in Table in 3.
Table 1
Table 2
Note：Component one is the polymer B of high glass-transition temperature in table, and component two is poly- for lower glass transition temperatures
Compound A.
Table 3
Claims (10)
1. a kind of crimping by stretching composite fibre, it is characterised in that described composite fibre for polymer A and polymer B it is compound and
Into described polymer A and polymer B have different glass transition temperatures.
2. a kind of crimping by stretching composite fibre according to claim 1, it is characterised in that the outer side edges of composite fibre curling
Polymer A glass transition temperature less than composite fibre curling inner side edge polymer B glass transition temperature.
3. a kind of crimping by stretching composite fibre according to claim 1 and 2, it is characterised in that described polymer B with it is poly-
The difference of the glass transition temperature of compound A is more than or equal to 20 DEG C.
4. a kind of crimping by stretching composite fibre according to claim 1-3 any one, it is characterised in that described polymerization
The mass fraction ratio of thing B and polymer A is 50:50-80:20.
5. a kind of crimping by stretching composite fibre according to claim 1-4 any one, it is characterised in that described polymerization
Thing B is polyester and/or fatty polyamide.
6. a kind of crimping by stretching composite fibre according to claim 5, it is characterised in that described polyester be PET, PBT,
The blend of one or more in PTT；Described fatty polyamide is polyamide 6, polyamide 66, polyamide 56, polyamides
The blend of one or more in amine 610, polyamide 1012, polyamide 1212.
7. a kind of crimping by stretching composite fibre according to claim 1, it is characterised in that described polymer A is polyamides
Amine elastomer, preferably described polyamide elastomer is fatty polyamide and polyethers and/or the copolymer of polyester.
8. the preparation method of the crimping by stretching composite fibre described in a kind of claim 1-7 any one, it is characterised in that described
Preparation method comprise the following steps：
(1) after polymer A is dried, carry out heating plasticizing and obtain spinning melt A；
(2) by polymer B dry after, carry out heating plasticizing and obtain spinning melt B；
(3) spinning melt A obtained above and spinning melt B are passed through into each corresponding pipeline respectively, after metering, while
Injection composite spining module carry out spinning, cool down, oil, drawing and setting, overfeeding laxation shaping and curling, obtain described stretching
Curling composite fibre.
9. preparation method according to claim 8, it is characterised in that the stretching ratio of the drawing and setting in step (3) is
1.50~1.75；Drawing and setting temperature is calculated by following equation, Tl=Tg+ 20 DEG C, wherein, T1It is drawing and setting temperature, TgIt is poly-
The glass transition temperature of compound B.
10. preparation method according to claim 8, it is characterised in that the over feed rate(OFR) of overfeeding laxation shaping is in step (3)
5~15%；Overfeeding laxation shaping temperature is calculated by following equation, Td=T1+ (10~60 DEG C), wherein, TdIt is overfeeding laxation shaping
Temperature, T1It is drawing and setting temperature.
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| CN107858767A (en) * | 2017-10-12 | 2018-03-30 | 中纺院（天津）科技发展有限公司 | A kind of high resiliency composite fibre and preparation method thereof |
| CN108893790A (en) * | 2018-08-27 | 2018-11-27 | 苏州金泉新材料股份有限公司 | PLA and half embedded composite fibre of PTT two-component and preparation method thereof |
| CN110241479A (en) * | 2019-06-12 | 2019-09-17 | 佛山新晟泰新材料技术有限公司 | A kind of permanent curl Europe root yarn and preparation method thereof |
| CN110644073A (en) * | 2019-09-09 | 2020-01-03 | 浙江恒澜科技有限公司 | Preparation method of polyester-nylon parallel composite elastic fiber |
| CN111394829A (en) * | 2019-10-21 | 2020-07-10 | 浙江恒澜科技有限公司 | Core-offset hollow composite fiber and preparation method and application thereof |
| CN113174654A (en) * | 2021-05-26 | 2021-07-27 | 四川大学 | Polyamide side-by-side composite elastic fiber and preparation method thereof |
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| CN107858767A (en) * | 2017-10-12 | 2018-03-30 | 中纺院（天津）科技发展有限公司 | A kind of high resiliency composite fibre and preparation method thereof |
| CN108893790A (en) * | 2018-08-27 | 2018-11-27 | 苏州金泉新材料股份有限公司 | PLA and half embedded composite fibre of PTT two-component and preparation method thereof |
| CN108893790B (en) * | 2018-08-27 | 2019-11-08 | 苏州金泉新材料股份有限公司 | PLA and half embedded composite fibre of PTT two-component and preparation method thereof |
| CN110241479A (en) * | 2019-06-12 | 2019-09-17 | 佛山新晟泰新材料技术有限公司 | A kind of permanent curl Europe root yarn and preparation method thereof |
| CN110644073A (en) * | 2019-09-09 | 2020-01-03 | 浙江恒澜科技有限公司 | Preparation method of polyester-nylon parallel composite elastic fiber |
| CN110644073B (en) * | 2019-09-09 | 2021-11-09 | 浙江恒澜科技有限公司 | Preparation method of polyester-nylon parallel composite elastic fiber |
| CN111394829A (en) * | 2019-10-21 | 2020-07-10 | 浙江恒澜科技有限公司 | Core-offset hollow composite fiber and preparation method and application thereof |
| CN111394829B (en) * | 2019-10-21 | 2022-09-13 | 浙江恒逸石化研究院有限公司 | Core-shift hollow composite fiber and preparation method and application thereof |
| CN113174654A (en) * | 2021-05-26 | 2021-07-27 | 四川大学 | Polyamide side-by-side composite elastic fiber and preparation method thereof |
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Application publication date: 20170616 |