CN103572399B - A kind of core-sheath compound fibre and production method thereof - Google Patents
A kind of core-sheath compound fibre and production method thereof Download PDFInfo
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Abstract
The present invention discloses a kind of core-sheath compound fibre and production method thereof, and the skin core composition of conjugated fibre is through continuously on fiber length direction; The mass ratio of Pi Xin is 40:60 ~ 80:20, and core composition is caustic solubility modified poly ester, and skin composition is thermoplasticity fibre-forming polymer; On the cross section of this conjugated fibre, core composition has and only has one to be on skin composition to expose, and the arc length of exposed portion is the 15 ~ 25% of conjugated fibre outer circumference; The core composition Alkali reduction dissolution rate of this conjugated fibre is fast, and the fiber after process can keep the intensity of more than 98%, and can preserve complete C type fracture morphology so that fabric has good light weight sense, heat retaining property and moisture absorption sweat discharging functions.
Description
Technical field
The present invention relates to a kind of core-sheath compound fibre and manufacture method thereof.
Background technology
Along with the high speed development of science and technology and improving constantly of people's living standard, people cover body resisting cold, but many-sided: from comfortable to health care, from safety to health, from being convenient to preserve and process to being applicable to different weathers and environment, from applicable modern's rhythm of life to the mode of life adapting to modern. Particularly in recent years, climate change is variable, and the day difference of temperature is relatively big, and people are often because changing clothes not in time, and cause the frequent outbreak of many diseases, this just insulation and temperature adjustment function and wearing comfort etc. to clothes be proposed higher requirement.
Human body and the external world outwardly transmit heat with three kinds of forms such as thermal conduction, thermal convection and thermal radiation by clothes, therefore, general adopt can reduce thermal conduction, the material of thermal convection be incubated, such as: natural cotton, wool, eider down and their biomimetic material. But, cotton fibre fibrid is elementary composition primarily of carbon, hydrogen, oxygen 3 kinds, in its chemical structural formula, having enough hydrogen groups, it can form hydrogen bonded with water, and therefore cotton fibre has excellent water-absorbent, its water-intake rate is 8.5, but the drainage effect that cotton fibre can not provide dress ornament good in perspire, this makes to expect that after human motion the sweat of absorption can not be discharged in time, and dress can produce discomfort.
On the other hand, owing to water clothes adopts thicker fabric mostly, when wearing, there is comparatively strong sense of heaviness, it is not easy to the activity of human body. In recent years, lightweight is one of direction of textiles research and development always, develops porous hollow fiber with conjugate spinning, and hollow rate is up to more than 40%, and fiber is not out of shape. The solid demand of light weight fabric further promotes porous hollow fiber to be developed towards the light weight fabric direction of high hollow rate. Use water soluble (CO) polymers in sea-island-type composite spun mode, water soluble polymer is placed in island, then adds man-hour molten except island component, form the porous hollow fiber of honeycomb structure, light weight can be reached and increase the effect of toughness, but the manufacturing cost of this kind of porous hollow fiber is higher.
Japanese Patent Laid-Open 2007-92227, disclose a kind of core-sheath polyester conjugated fibre, the 5-sulfonic acid m-phthalic acid salt that core composition is use 4 ~ 5.5mol% is the modified poly ester of comonomer, the 5-sulfonic acid m-phthalic acid salt that sheath composition is use 0.1 ~ 3mol% is the modified poly ester of comonomer, and on fiber cross-sectional, some exposed fiber surface of core composition. But the Alkali reduction speed of the core composition of this conjugated fibre is also unhappy, can cause the decrement of sheath composition, so that intensity becomes low.
Summary of the invention
It is an object of the invention to provide a kind of core-sheath compound fibre. The fabric that the core composition of this core-sheath compound fibre uses this conjugated fibre obtained, after decrement treatment, has light weight, heat retaining property and water suction, suction sweat, perspiration discharging performance, has good strength retention simultaneously.
Another object of the present invention is to provide the production method of core-sheath compound fibre.
The technical solution of the present invention is:
A kind of core-sheath compound fibre, the skin core composition of this core-sheath compound fibre is through continuously on fiber length direction; The mass ratio of Pi Xin is 40:60 ~ 80:20, and core composition is taking terephthalic acid and ethylene glycol as main polymerisation monomer, taking m-phthalic acid sulfonate, polyoxyethylene glycol and m-phthalic acid as the modified poly ester of comonomer, skin composition is thermoplasticity fibre-forming polymer; On the cross section of this conjugated fibre, core composition has and only has one to be on skin composition to expose, and the arc length of exposed portion is the 15 ~ 25% of conjugated fibre outer circumference; This conjugated fibre concentration to be 1wt%, temperature be 95 degree, bath raio be the core composition Alkali reduction dissolution rate in sodium hydroxide solution when 1:100 be 0.3 ~ 0.5g/min.
The core composition polymkeric substance of the core-sheath compound fibre of the present invention is modified poly ester, and each comonomer forming modified poly ester is preferably;
(1) relative to the sodiosulfoisophthalic acid of terephthalic acid total amount 6 ~ 10mol%,
(2) relative to the polyoxyethylene glycol of modified poly ester total amount 1 ~ 15wt%
(3) relative to the m-phthalic acid of terephthalic acid total amount 5 ~ 10mol%.
The modified poly ester of this core composition can be eliminated by complete decrement in sodium hydroxide alkaline solution. Comonomer polyoxyethylene glycol is 1 ~ 15wt% relative to modified poly ester total amount addition, it is preferable that 5 ~ 15wt%, it is most preferred that 10 ~ 15wt%. Due in modified copolyester containing a large amount of sodiosulfoisophthalic acid, if polymkeric substance does not add polyoxyethylene glycol at polymerization stage, polymkeric substance then there will be and increases sticky fast, and the polymerization degree of polymkeric substance then cannot improve, and most Zhongdao fiber then embodies low strength. After adding polyoxyethylene glycol in polymerization stage polymkeric substance, have and significantly subtract sticky effect, make polymkeric substance can reach the melt viscosity needed for polymkeric substance when higher degrees of polymerization, but the addition of raising polyoxyethylene glycol simply, particularly more than after 15wt%, the melt viscosity of its polymkeric substance can be excessively little, thus affects spinnability.
The core-sheath compound fibre of the present invention, the mass ratio of its skin core is 40:60 ~ 80:20, it is preferable that 50:50 ~ 70:30. Owing to core composition polymkeric substance finally by complete decrement, so the compound of its core composition polymkeric substance is than excessive, then can make cost excessive in the fabric post-treatment stage. On the other hand, if the compound ratio of core composition polymkeric substance is less than 20%, then hollow portion after final Alkali reduction is excessively little, and the characteristic light weight sense of fabric is not enough.
The section of the core-sheath compound fibre of the present invention is 1 place's exposed type core sheath composite structure, and being specifically expressed as the extending part of section structure SMIS composition on skin composition has and only have 1 place. During sodium hydroxide solution Alkali reduction, the caustic solubility modified poly ester of core composition is carried out decrement treatment by alkaline solution from here, and the fiber cross-sectional after decrement presents the C type section of hollow shape.
After the complete decrement treatment of alkaline solution, the physical property of the sheath composition polymkeric substance of residual also can change, but, owing to present invention employs the extremely fast polymkeric substance of Alkali reduction speed as core composition, its alkali decrement treatment time significantly shortens, very big degree reduce alkaline solution to the destruction of sheath composition polymkeric substance, thus, the breaking tenacity of sheath composition can have the good maintenance rate of more than 98%.
The polyester complex fiber of the present invention, the thermoplasticity fibre-forming polymer of its skin composition can be any one in ethylene glycol terephthalate (PET), propylene glycol ester terephthalate (PTT), mutual-phenenyl two acid bromide two alcohol ester (PBT). Preferred PBT. PET is polyester raw material the most conventional, and it is cheap, and fibrous quality is stablized. And PTT and PBT, owing to the fiber of these two kinds of polymers all has good elasticity, and due to its molecular chain segment length, it is presented as good flexibility. Wherein preferred PBT because the resistance to Alkali reduction of PBT to compare PET and PTT comparatively excellent, also relatively PTT is excellent for its thermotolerance simultaneously.
The polyester complex fiber of the present invention, the thermoplasticity fibre-forming polymer of its skin composition can also be polymeric amide. The resistance to Alkali reduction of polymeric amide much larger than polyester polymers such as PET, so by the conjugated fibre of polymeric amide as skin composition, after later stage alkali decrement treatment, its strength retention has good advantage. In addition, the absolute brute force of the fiber being made up of polymeric amide is also much larger than polyester.
The core-sheath compound fibre of the present invention, the thermoplasticity fibre-forming polymer of its skin composition can also be cationic dye capable of dyeing copolyesters. Said cationic dye capable of dyeing copolyesters can be by copolyesters as comonomer of sodiosulfoisophthalic acid (SSIA) and polyoxyethylene glycol (PEG); Can also be by copolyesters as comonomer of sodiosulfoisophthalic acid (SSIA) and hexanodioic acid or dimethyl adipate. The conjugated fibre obtained as skin composition by above-mentioned copolyesters, although it is slightly not enough in resistance to Alkali reduction that skin composition is copolyesters base polymer, but owing to it can adopt cationic dyeing, it is even possible that carry out cationic dyeing under normal temperature and pressure conditions, the fabric therefore obtained by this fiber can make finished product bright in luster when more energy-conserving and environment-protective.
The polyester complex fiber of the present invention, it is possible to adopt any known melt spinning method, final finished fiber can adopt online single step spining drawing and forming, it is also possible to adopts two-step approach, i.e. first spinning, and reprocessing is obtained.
Specifically comprise the steps: first, preparing taking terephthalic acid and ethylene glycol as main polymerisation monomer, using m-phthalic acid sulfonate, polyoxyethylene glycol and m-phthalic acid as the modified poly ester of comonomer as core composition, preparation thermoplasticity fibre-forming polymer is as skin composition; Skin core composition is carried out spinning by 40:60 ~ 80:20 discharge-amount than by composite spining module, make full-drawn yarn FDY conjugated fibre (single stage method) or pre-oriented yarn POY, POY is processed into false twist yarn or deep processing silk conjugated fibre (two-step approach) further, on the cross section of this conjugated fibre, core composition has and only has one to be on skin composition to expose, and the arc length of exposed portion is the 15 ~ 25% of conjugated fibre outer circumference.
The spinning processes of single stage method as follows described in:
Respectively by skin, the each composition polymer chips of core at drying machine inner drying to below moisture 100ppm, and drop into A respectively, B feed bin, the section of skin composition enters the melting at 250 ~ 300 DEG C of temperature of A screw rod through A feed bin, its discharge-amount is controlled by A volume pump, the section of core composition enters the melting at 250 ~ 290 DEG C of temperature of B screw rod through B feed bin, its discharge-amount is controlled by B volume pump, skin core composition presses 50:50 ~ 90:10 discharge-amount than by by the composite spining module of spinning manifold control temperature under 250 ~ 300 DEG C of conditions, spin nascent fibre, when cross air blow wind speed 15 ~ 40m/min, cooling curing is shaping, make the collection of filaments through to oil nozzle fiber evenly being oiled and reduce friction again, oil supply rate is 0.5 ~ 1.5%.
The fiber that oil supply boundling is over is through spinning stack, through pre-winding apparatus interlacing, entering the first hot roller 1HR(temperature is 80 ~ 120 DEG C), and after being wound around 6 ~ 7 circles on the first hot roller, again through the 2nd hot roller 2HR, also (temperature is 100 ~ 160 DEG C) is enclosed at wound thereon 6 ~ 7, stretching ratio between the first hot roller and the 2nd hot roller is 1.20 ~ 3.00, it is carried out interlacing by main winding apparatus by the fiber after drawn under the 2nd hot roller, again by 2 roller (3GR, 4GR) fiber is introduced reeling machine and coil into finished product spinning cake (FDY), the coiling speed of reeling machine is 3500 ~ 5000m/min, preferably 3800 ~ 4500m/min.
The spinning processes of two-step approach as follows described in:
Respectively by skin, the each composition polymer chips of core at drying machine inner drying to below moisture 100ppm, and drop into A respectively, B feed bin, the section of skin composition enters the melting at 250 ~ 300 DEG C of temperature of A screw rod through A feed bin, its discharge-amount is controlled by A volume pump, the section of core composition enters the melting at 250 ~ 290 DEG C of temperature of B screw rod through B feed bin, its discharge-amount is controlled by B volume pump, skin core composition presses 50:50 ~ 90:10 discharge-amount than by by the composite spining module of spinning manifold control temperature under 250 ~ 300 DEG C of conditions, spin nascent fibre, when cross air blow wind speed 15 ~ 40m/min, cooling curing is shaping, make the collection of filaments through to oil nozzle fiber evenly being oiled and reduce friction again, oil supply rate is 0.5 ~ 1.5%.
The fiber that oil supply boundling is over is through spinning stack, through pre-winding apparatus interlacing, enter first roller (1GR), through main winding apparatus, batching obtained preorientation fiber (POY) through entering reeling machine after the 2nd roller (2GR) again, the coiling speed of reeling machine is 1200 ~ 3500m/min.
Gained POY by following two kinds of methods, can make false sth. made by twisting machining deformation silk and extend silk respectively.
1, obtained POY is carried out false sth. made by twisting and it is processed into false twist textured yarn (DTY): pre-oriented yarn above-mentioned steps obtained is processed on false twisting machine, process velocity to be 300��700m/min, the first heater temperature be 130��220 DEG C, the 2nd heater temperature be 110 ~ 200 DEG C, extension ratio carries out when being 1.20��3.00 false twisting with the fingers processing, obtained machining deformation silk.
2, obtained POY is carried out deep processing and makes extension silk (DT): pre-oriented yarn above-mentioned steps obtained is processed on extension machine, process velocity to be 300��700m/min, the first heat roller temperature be 130��220 DEG C, the 2nd heat roller temperature be 110 ~ 200 DEG C, extension ratio carry out deep processing when being 1.20��3.00, obtained extend silk.
In order to verify effective effect of the present invention, obtained compound is carried out cylinder than the above-mentioned fiber (FDY, DTY, DT) being 50/50 and compiles processing, make cylinder and compile thing. Cylinder is compiled thing, and to put into concentration be 1%, and temperature is 95 DEG C, and bath raio is in the sodium hydroxide alkaline solution of 1:100, and process 10 ~ 30min, is all eliminated the core composition of fiber by decrement, make fiber present the C fiber type of hollow type.
The core-sheath compound fibre of the present invention makes fabric after post-treatment, sodium hydroxide alkaline solution carries out decrement treatment, fiber after process can keep the intensity of more than 95%, and complete C type fracture morphology can be preserved so that fabric has good light weight sense, heat retaining property and moisture absorption sweat discharging functions.
Performance parameter value in the present invention adopts following method to measure.
(1) Alkali reduction speed
Fiber is made into cylinder and compiles thing, cylinder is compiled thing (initial weight W1, unit: sodium hydroxide solution g) putting into following condition carries out alkali decrement treatment, after certain time (time: t, unit: min), its weight (W2 is taken after cylinder is compiled thing clear water rinsing, drying, unit: g), calculate decrement speed again
Sodium hydroxide solution condition:
Temperature 95 degree, concentration: 1wt%, bath raio 1:100,
Decrement speed=(W1-W2)/t �� 100%.
(2) strength retention
The initial strength of fiber is T1, then fiber is made into cylinder and compiles thing, adopts sodium hydroxide solution that it is carried out alkali decrement treatment, after the complete decrement of core composition, compile thing from cylinder and extract yarn, strength tester records intensity T2, strength retention is calculated again by following formula
Strength retention=(T1-T2)/T1 �� 100%.
(3) hollow rate
By this fiber woven into fabric, again fabric is carried out alkali decrement treatment, after reaching complete decrement, its fiber is extracted out, take its fracture morphology (such as accompanying drawing 3), after its section photo prints, cutting and get each monofilament, and hollow part after its core stripping also cut respectively, the weight Q2(of the weight Q1 and each monofilament summation that take each monofilament hollow part comprises hollow part), hollow rate is calculated by following formula
Hollow rate=Q1/Q2 �� 100%.
(4) fabric elasticity (elongation)
Adopt JIS-10968.16(2010) A method standard testing.
Accompanying drawing explanation
Fig. 1 is the sectional view of core-skin type polyester complex fiber (FDY) of the present invention.
Fig. 2 is the fibre section figure of core-sheath compound fibre of the present invention (FDY) after alkali decrement treatment.
Fig. 3 is the fibre section figure of core-sheath compound fibre of the present invention (DTY) after alkali decrement treatment.
Embodiment
Below in conjunction with embodiment, the present invention is further detailed explanation.
Embodiment 1
Skin composition polymer poly ethylene glycol terephthalate (PET) is cut into slices, core composition polymkeric substance alkali processable copolyesters (copolymer composition SSIA:8mol%, PEG1000:5wt%, IAP:7wt%) section is dried to below 100ppm respectively, PET section enters the melting at 290 DEG C of temperature of A screw rod through A feed bin, its discharge-amount is controlled by A volume pump, alkali processable copolyester section enters the melting at 270 DEG C of temperature of B screw rod through B feed bin, its discharge-amount is controlled by B volume pump, skin core composition presses 50:50 discharge-amount than by by the composite spining module of spinning manifold control temperature under 290 DEG C of conditions, spin nascent fibre, when cross air blow wind speed 25m/min, cooling curing is shaping, make the collection of filaments through to oil nozzle fiber evenly being oiled and reduce friction again, oil supply rate is 0.7%. the fiber that oil supply boundling is over is through spinning stack, through pre-winding apparatus interlacing, enter first roller (1GR), speed is 2800m/min, through main winding apparatus, entering reeling machine after around speed being the 2nd roller (2GR) of 2780m/min again and batch obtained preorientation fiber (POY), the coiling speed of reeling machine is 2790m/min.
In obtained POY fiber, the arc length of core composition exposed portion is the 24.8% of conjugated fibre outer circumference, this fiber is processed on false twist processing machine, process velocity is 500m/min, first heater temperature is 160 DEG C, 2nd heater temperature is 140 DEG C, carry out false sth. made by twisting when extension ratio is 1.85 to process, obtained false twist yarn (DTY), the arc length of core composition exposed portion is the 23.2% of conjugated fibre outer circumference, this DTY woven into fabric (broadwise use) is by sodium hydroxide solution decrement (temperature 95 degree, concentration: 1wt%, bath raio 1:100) after, fiber can keep intactly hollow type C type section form, Alkali reduction speed is 0.42g/min. fibre strength after decrement is compared with the intensity before decrement, and maintenance rate is 81.5%, and hollow rate is 43%. fabric after decrement has good light weight sense, heat retaining property and moisture absorption sweat discharging functions, and elasticity (fabric elongation) is 5.1%.
Embodiment 2
Allowancing for bark composition polymkeric substance and be changed to polybutylene terephthalate (PBT) outward, other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 1.
Embodiment 3
Allowancing for bark composition polymkeric substance and be changed to Poly(Trimethylene Terephthalate) (PTT) outward, other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 1.
Embodiment 4
Allowancing for bark composition polymkeric substance is changed to outside nylon 6, and other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 1.
Embodiment 5
Allowance for bark composition polymkeric substance to be changed to cation dyeable polyester (copolymer composition: relative to the sodiosulfoisophthalic acid of carboxylic acid total amount 1.8mol%, the polyoxyethylene glycol of molecular weight 1000 relative to polyester total amount 1.2wt%) outward, other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 1.
Enforcement rate 6
Allowancing for bark composition polymkeric substance and be changed to normal pressure cation dyeable polyester (copolymer composition: relative to the dimethyl adipate of polyester total amount 4.5wt%, the sodiosulfoisophthalic acid relative to polyester total amount 2.3wt%) outward, other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 1.
Embodiment 7
Allowancing for bark core compositely proportional is changed to outside 60:40, and other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 2.
Embodiment 8
Allowancing for bark core compositely proportional is changed to outside 70:30, and other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 2.
Embodiment 9
Allowancing for bark core compositely proportional is changed to outside 80:20, and other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 2.
Embodiment 10
Allowancing for bark composition polymkeric substance and be changed to polybutylene terephthalate (PBT) outward, other conditions are identical with embodiment 7. By the concrete data of result after this fiber and fabric decrement in table 2.
Embodiment 11
Allowancing for bark composition polymkeric substance and be changed to polybutylene terephthalate (PBT) outward, other conditions are identical with embodiment 8. By the concrete data of result after this fiber and fabric decrement in table 2.
Embodiment 12
Allowancing for bark composition polymkeric substance and be changed to polybutylene terephthalate (PBT) outward, other conditions are identical with embodiment 9. By the concrete data of result after this fiber and fabric decrement in table 2.
Embodiment 13
Except being changed to except deep processing by the mode that POY carries out processing, other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 3.
The method of deep processing: obtained POY fiber is processed on deep processing machine, process velocity to be 600m/min, the first heat roller temperature be 90 DEG C, the 2nd heater temperature be 130 DEG C, extension ratio carries out when being 1.90 false twisting with the fingers processing, obtained deep processing silk (DT).
Embodiment 14
Except by 2 footwork spinning techniques (POY-DTY), being changed to 1 footwork (FDY) outward, other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 3
1 footwork spinning technique is: from the spun fiber of spinning jet after oil supply boundling is over, through spinning stack, through pre-winding apparatus interlacing, entering the first hot roller 1HR(temperature is 80 ~ 120 DEG C), and after being wound around 6 ~ 7 circles on the first hot roller, again through the 2nd hot roller 2HR, also (temperature is 100 ~ 160 DEG C) is enclosed at wound thereon 6 ~ 7, stretching ratio between the first hot roller and the 2nd hot roller is 1.20 ~ 3.00, it is carried out interlacing by main winding apparatus by the fiber after drawn under the 2nd hot roller, again by 2 roller (3GR, 4GR) fiber is introduced reeling machine and coil into finished product spinning cake (FDY), the coiling speed of reeling machine is 3500 ~ 5000m/min.
Embodiment 15
Except being changed to except 10wt% by the addition of core composition comonomer PEG, other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 3.
Embodiment 16
Except being changed to except 15wt% by the addition of core composition comonomer PEG, other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 3.
Comparative example 1
Except being changed to except SSIA:8mol%, PEG:0wt%, IPA:0wt% by the addition of the comonomer of core composition polymkeric substance, other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 3.
Comparative example 2
Except being changed to except SSIA:8mol%, PEG:10wt%, IPA:0wt% by the addition of the comonomer of core composition polymkeric substance, other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 3.
Comparative example 3
Except being changed to except SSIA:8mol%, PEG:0wt%, IPA:7wt% by the addition of the comonomer of core composition polymkeric substance, other conditions are identical with embodiment 1. By the concrete data of result after this fiber and fabric decrement in table 3.
Claims (9)
1. a core-sheath compound fibre, it is characterised in that: the skin core composition of this core-sheath compound fibre is through continuously on fiber length direction; The mass ratio of Pi Xin is 40:60 ~ 80:20, and core composition is taking terephthalic acid and ethylene glycol as main polymerisation monomer, taking m-phthalic acid sulfonate, polyoxyethylene glycol and m-phthalic acid as the modified poly ester of comonomer, skin composition is thermoplasticity fibre-forming polymer; On the cross section of this conjugated fibre, core composition has and only has one to be on skin composition to expose, and the arc length of exposed portion is the 15 ~ 25% of conjugated fibre outer circumference; This conjugated fibre concentration to be 1wt%, temperature be 95 degree, bath raio be the core composition Alkali reduction dissolution rate in sodium hydroxide solution when 1:100 be 0.3 ~ 0.5g/min; The polyoxyethylene glycol formed in the comonomer of core composition is 5 ~ 15wt% relative to modified poly ester total amount.
2. core-sheath compound fibre according to claim 1, it is characterised in that: the comonomer forming core composition is:
(1) relative to the sodiosulfoisophthalic acid of terephthalic acid total amount 6 ~ 10mol%,
(2) relative to the m-phthalic acid of terephthalic acid total amount 5 ~ 10mol%.
3. core-sheath compound fibre according to claim 1, it is characterised in that: the polyoxyethylene glycol formed in the comonomer of core composition is 10 ~ 15wt% relative to modified poly ester total amount.
4. core-sheath compound fibre according to arbitrary item of claim 1 ~ 3, it is characterised in that: the thermoplasticity fibre-forming polymer of described skin composition is polyethylene terephthalate, Poly(Trimethylene Terephthalate) or polybutylene terephthalate.
5. core-sheath compound fibre according to claim 4, it is characterised in that: the thermoplasticity fibre-forming polymer of described skin composition is polybutylene terephthalate.
6. core-sheath compound fibre according to arbitrary item of claim 1 ~ 3, it is characterised in that: the thermoplasticity fibre-forming polymer of described skin composition is polymeric amide.
7. core-sheath compound fibre according to arbitrary item of claim 1 ~ 3, it is characterised in that: the thermoplasticity fibre-forming polymer of described skin composition is cationic dye capable of dyeing copolyesters.
8. core-sheath compound fibre according to claim 1, it is characterised in that: this conjugated fibre is full-drawn yarn, false twist yarn or deep processing silk.
9. the production method of core-sheath compound fibre described in a claim 1, it is characterized in that: comprise the steps: first, preparing taking terephthalic acid and ethylene glycol as main polymerisation monomer, using m-phthalic acid sulfonate, polyoxyethylene glycol and m-phthalic acid as the modified poly ester of comonomer as core composition, preparation thermoplasticity fibre-forming polymer is as skin composition; Skin core composition is carried out spinning by 40:60 ~ 80:20 discharge-amount than by composite spining module, make full-drawn yarn FDY conjugated fibre or pre-oriented yarn POY, POY is processed into false twist yarn or deep processing silk conjugated fibre further, on the cross section of this conjugated fibre, core composition has and only has one to be on skin composition to expose, and the arc length of exposed portion is the 15 ~ 25% of conjugated fibre outer circumference.
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| CN106917160A (en) * | 2015-12-28 | 2017-07-04 | 东丽纤维研究所（中国）有限公司 | A kind of hygroscopicity sheath-core type conjugate fiber, false twist yarn and fiber body structure |
| CN105734716A (en) * | 2016-02-23 | 2016-07-06 | 南通市中和化纤有限公司 | Polyamide-polyester reinforced composite fiber |
| CN107345320A (en) * | 2016-05-05 | 2017-11-14 | 东丽纤维研究所（中国）有限公司 | A kind of core sheath composite fibre and its fabric |
| CN114775106B (en) * | 2022-05-30 | 2024-01-30 | 江苏江南高纤股份有限公司 | Preparation method of porous-structure low-melting-point composite polyester fiber |
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Effective date of registration: 20190203 Address after: Japan Tokyo central Nihonbashi Muromachi 1-1-2 Patentee after: Toray Industries, Inc. Address before: 226009 No. 58 Xin Kai Nan Road, Nantong economic and Technological Development Zone, Jiangsu Patentee before: Toray Fiber Research Institute (China) Co., Ltd. |
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