WO2020232876A1 - 一种弹性复合纤维及其制造方法 - Google Patents

一种弹性复合纤维及其制造方法 Download PDF

Info

Publication number
WO2020232876A1
WO2020232876A1 PCT/CN2019/102830 CN2019102830W WO2020232876A1 WO 2020232876 A1 WO2020232876 A1 WO 2020232876A1 CN 2019102830 W CN2019102830 W CN 2019102830W WO 2020232876 A1 WO2020232876 A1 WO 2020232876A1
Authority
WO
WIPO (PCT)
Prior art keywords
viscosity
pet
ptt
fiber
pbt
Prior art date
Application number
PCT/CN2019/102830
Other languages
English (en)
French (fr)
Inventor
蔡涛
欧阳文咸
冯永生
Original Assignee
上海海凯生物材料有限公司
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 上海海凯生物材料有限公司 filed Critical 上海海凯生物材料有限公司
Priority to JP2021547623A priority Critical patent/JP7200390B2/ja
Priority to EP19930025.2A priority patent/EP3974565A4/en
Priority to US17/285,534 priority patent/US20210388536A1/en
Priority to KR1020217011323A priority patent/KR20210052553A/ko
Publication of WO2020232876A1 publication Critical patent/WO2020232876A1/zh

Links

Classifications

    • 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
    • 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
    • D01D5/08—Melt spinning methods
    • D01D5/10—Melt spinning methods using organic materials
    • 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
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • 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
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/224—Selection or control of the temperature during stretching
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/061—Load-responsive characteristics elastic

Definitions

  • the invention relates to an elastic composite fiber and a manufacturing method thereof.
  • the production method of three-dimensional hollow fiber elastic formation is mainly processed by a crimping machine. Tests have proved that the elastic fiber produced by the hollow fiber production method has good spinnability, low density and good looseness. However, due to the conventional three-dimensional hollow fiber The fiber is a single component fiber, and its bulkiness and hand feel are very different from wool, and its elasticity is very small or even not elastic.
  • Composite fibers are a type of multi-component fibers.
  • the Chinese invention patent application company's own application
  • application number 201810987214.0 discloses an elastic composite fiber and its manufacturing method, which specifically includes fiber body low-viscosity PET, high-viscosity PET and PTT.
  • the three materials can be used in the corresponding process.
  • the elastic composite fiber is prepared, but the elastic composite fiber has the defects of general three-dimensional crimping and poor thermal stability.
  • the purpose of the present invention is to provide an elastic composite fiber and a manufacturing method thereof.
  • the present invention is prepared by PTT/PET/PBT composite fiber, through reasonable coordination between materials and differences in physical and chemical properties, It is possible to obtain a material with more fluffy, more obvious three-dimensional structure and better thermal stability.
  • An elastic composite fiber comprising a fiber body, which is characterized in that the fiber body is composed of the following weight percentages of materials through composite spinning: low-viscosity PET10%-90%, high-viscosity PET10%-90%, PTT10-80% , PBT10-80%.
  • the viscosity of the low-viscosity PET is 0.4-0.7dL/g
  • the viscosity of the high-viscosity PET is 0.7-0.9dL/g
  • the PTT viscosity is 0.7-1.3dL/g
  • the viscosity of the PBT is 0.7-1.3 dL/g
  • the number of crimps of the fiber body is 5-15 per cm.
  • the weight percentage of the low viscosity PET is 20%
  • the weight percentage of the high viscosity PET is 20%
  • the weight percentage of the PTT is 30%
  • the weight percentage of the PBT is 30%.
  • the present invention also provides a method for manufacturing elastic composite fibers, which includes the following steps:
  • Step A Dry low-viscosity PET, high-viscosity PET, PTT, PBT until the water content is less than 15ppm, the viscosity of low-viscosity PET is 0.4-0.7dL/g, and the viscosity of high-viscosity PET is 0.7-0.9dL/ g, PTT viscosity is 0.7-1.3dL/g, PBT viscosity is 0.8-1.2dL/g;
  • Step B Put the low-viscosity PET, high-viscosity PET, PTT, and PBT into the screw extruder for melt extrusion, and meter them into the composite spinning assembly through the metering pump.
  • the weight percentage of the low-viscosity PET accounts for 10% of the total material. %-90%, the weight percentage of high-viscosity PET accounts for 10-90% of the total material, the weight percentage of PTT accounts for 10-80% of the total material, and the weight percentage of PBT accounts for 10-80% of the total material; from composite spinning
  • the melt from the components is introduced into the spinneret and ejected. After ejection, a parallel-shaped vacuum tow is formed. After spinning, ring blowing, cooling, oiling, winding, and barreling, uncrimped top fiber is obtained.
  • Step C The fiber precursor obtained in step B is balanced for 20 hours and then shaped.
  • the shaping adopts tension heat setting or loose type setting.
  • the tension heat setting adopts the first traction roller, the second traction roller, the third traction roller and the second traction roller.
  • Four traction rollers are used for stretching and shaping.
  • the composite spinning assembly is a spinning component of a large-capacity dual-channel composite spinning device, which consists of an upper shell, a filter cavity, a distribution plate A, a distribution plate B, and a distribution plate.
  • the spinneret, the pressing block and the lower shell constitute (the device disclosed in the patent number 2016203355293).
  • the first traction roller speed is 220-280m/min and the temperature is 150-170°C; the second traction roller speed is 222-282m/min and the temperature is 170-180°C; the third traction roller speed is 225-285m/min, the temperature is 170-180°C; the fourth traction roller speed is 230-290m/min, the temperature is 180°C.
  • the temperature of loose heat setting is 80-120°C and the time is 2-6 min.
  • the present invention has the following beneficial effects:
  • the present invention solves the market gap of composite elastic fibers of PET, PTT and PBT three fibers;
  • the present invention combines the advantages of PET, PTT, and PBT fibers. It not only has the advantages of good spinnability, high strength, good elasticity, softness and comfort, easy dyeing, moisture absorption, etc., but also through reasonable coordination between materials and physical and chemical properties. The difference in performance makes the three-dimensional structure of the composite fiber more significant and the thermal stability better;
  • the present invention uses the composite self-crimping elastic properties produced by the different molecular structures and crystalline properties of PET, PTT and PBT, and then produces a parallel PTT/PET/PBT through the spinning member of the large-capacity dual-channel composite spinning device
  • Composite elastic short fiber the fiber has very good bulkiness, softness, bright color, and has certain elasticity and elastic recovery, and the three-dimensional structure is more obvious, and the thermal stability is better. It solves the problem of the expensive and poor bulkiness of traditional elastic fibers , Poor hand feel, poor dyeability, easy decolorization, etc.;
  • the present invention reduces the core-spun yarn manufacturing process, simplifies the operation process, greatly saves labor costs, and reduces resource waste.
  • the composite material produced by the present invention has a wide application range, and is suitable for the production of carpets, plain clothes, fashion clothes, underwear, sportswear, swimwear and socks.
  • a manufacturing method of elastic composite fiber includes the following steps:
  • Step A Dry low-viscosity PET, high-viscosity PET, PTT, PBT until the water content is less than 15ppm, low-viscosity PET has a viscosity of 0.42dL/g, high-viscosity PET has a viscosity of 0.83dL/g, PTT viscosity 0.92dL/g, PBT viscosity 0.92dL/g;
  • Step B Put the low-viscosity PET, high-viscosity PET, PTT, and PBT into the screw extruder for melt extrusion, and meter them into the composite spinning assembly through the metering pump.
  • the composite spinning assembly is a large-capacity double The spinning component of the channel composite spinning device, the weight percentage of low-viscosity PET accounts for 20% of the total material, the weight percentage of high-viscosity PET accounts for 20% of the total material, the weight percentage of PTT accounts for 30% of the total material, and the weight of PBT The percentage accounts for 30% of the total material;
  • the melt from the composite spinning assembly is introduced into the spinneret and ejected, and after ejection, a parallel-shaped vacuum tow is formed, and then it is spinning, ring blowing, cooling, oiling,
  • the uncrimped top fiber precursor is obtained after winding and dropping;
  • Step C The fiber precursor obtained in step B is balanced for 20 hours and then shaped.
  • the shaping adopts tension heat setting, and the tension heat setting adopts the first traction roller, the second traction roller, the third traction roller and the fourth traction roller for stretching Forming, among them, the speed of the first traction roller is 250m/min, the temperature is 160°C; the speed of the second traction roller is 250m/min, the temperature is 175°C, the third traction roller speed is 250m/min, the temperature is 175°C, the fourth traction roller The speed is 250m/min and the temperature is 180°C.
  • multiple first traction rollers, second traction rollers, third traction rollers, and fourth traction rollers can be used. The temperature of each traction roller rises sequentially, so that the fiber temperature is heated more uniformly, and the fiber forming structure is better. more stable.
  • Step A Dry low-viscosity PET, high-viscosity PET, PTT, PBT until the water content is less than 15ppm, low-viscosity PET has a viscosity of 0.42dL/g, high-viscosity PET has a viscosity of 0.83dL/g, PTT viscosity 0.92dL/g, PBT viscosity 0.92dL/g;
  • Step B Put the low-viscosity PET, high-viscosity PET, PTT, and PBT into the screw extruder for melt extrusion, and meter them into the composite spinning assembly through the metering pump.
  • the composite spinning assembly is a large-capacity double The spinning component of the channel composite spinning device, the weight percentage of low-viscosity PET accounts for 20% of the total material, the weight percentage of high-viscosity PET accounts for 20% of the total material, the weight percentage of PTT accounts for 30% of the total material, and the weight of PBT The percentage accounts for 30% of the total material;
  • the melt from the composite spinning assembly is introduced into the spinneret to be ejected, and after ejection, a tow with a side-by-side shape is formed, which is then subjected to spinning, ring blowing, cooling, oiling, and winding After winding and dropping the barrel, the uncrimped top fiber precursor is obtained;
  • Step C The fiber obtained in step B is shaped.
  • the loose setting is used for the setting.
  • the temperature of the loose setting is 100°C and the time is 4 minutes.
  • the loose setting uses the tension-free state to fully relax the fiber, eliminate the internal stress of the fiber, and make the fiber structure Perfect and stable.
  • a manufacturing method of elastic composite fiber includes the following steps:
  • Step A Dry low-viscosity PET, high-viscosity PET, PTT, PBT until the water content is less than 15ppm, the viscosity of low-viscosity PET is 0.55dL/g, the viscosity of high-viscosity PET is 0.75dL/g, PTT viscosity 0.95dL/g, PBT viscosity 0.95dL/g;
  • Step B Put the low-viscosity PET, high-viscosity PET, PTT, and PBT into the screw extruder for melt extrusion, and meter them into the composite spinning assembly through the metering pump.
  • the composite spinning assembly is a large-capacity double The spinning component of the channel composite spinning device, the weight percentage of low-viscosity PET accounts for 20% of the total material, the weight percentage of high-viscosity PET accounts for 20% of the total material, the weight percentage of PTT accounts for 30% of the total material, and the weight of PBT The percentage accounts for 30% of the total material;
  • the melt from the composite spinning assembly is introduced into the spinneret to be ejected, and after ejection, a tow with a side-by-side shape is formed, which is then subjected to spinning, ring blowing, cooling, oiling, and winding After winding and dropping the barrel, the uncrimped top fiber precursor is obtained;
  • Step C The fiber precursor obtained in step B is balanced for 20 hours and then shaped.
  • the shaping adopts tension heat setting, and the tension heat setting adopts the first traction roller, the second traction roller, the third traction roller and the fourth traction roller for stretching Forming, among them, the speed of the first traction roller is 250m/min, the temperature is 160°C; the speed of the second traction roller is 250m/min, the temperature is 175°C, the third traction roller speed is 250m/min, the temperature is 175°C, the fourth traction roller The speed is 250m/min and the temperature is 180°C.
  • the manufacturing method is the same as that of Example 3.
  • the related performance parameters of the obtained elastic composite fiber are as follows:
  • the screw is divided into five zones, and the temperatures of the five zones of the screw are 265°C, 275°C, 280°C, 280°C, and 275°C, respectively.
  • the fiber coming out of the spinneret is cooled by circular blowing, the temperature is 20°C, and the wind speed is 2m/s.
  • the bottom viscosity PET can be obtained by polymerizing terephthalic acid and excess glycol. During the polymerization process, the excess glycol is 33% (molar ratio). Among them, the glycol uses 1,2-propylene glycol and The molar ratio of diethylene glycol, 1,2-propanediol and diethylene glycol is controlled at 70:30-50:50. As the mole ratio of diethylene glycol increases, the viscosity is low The fluidity of PET is increasing, but the strength is gradually decreasing. High-viscosity PET can be thickened in conventional PET. The liquid phase thickening process is specifically adopted to purify and increase the viscosity by extracting liquid small molecules. After the thickening treatment, the rigidity of the PET increases, and the increase in strength is important for improvement. The hardness of the composite fiber plays an important role.
  • the PTT and PBT in the present invention can be conventional PTT and PBT on the market.
  • the manufacturing method is the same as that in Example 3.
  • the relative performance parameters of the obtained elastic composite fiber are as follows:

Abstract

本发明公开了一种弹性复合纤维，包括纤维本体，其特征在于，纤维本体由如下重量百分比的物质组成经复合纺丝而成：低粘度PET10％-90％，高粘度PET10％-90％，PTT10-80％，PBT10-80％。本发明集PET、PTT、PBT三种纤维的优点于一身，不仅具有可纺性好、强度高、弹性佳、柔软舒适、易染、吸湿等优点，还通过材料之间合理配合以及理化性能之间的差异，使复合纤维三维立体结构更加显著，热稳定性更好。

Description

一种弹性复合纤维及其制造方法 技术领域
本发明涉及一种弹性复合纤维及其制造方法。
背景技术
随着人们生活水平的不断提高，人们对服装款式的要求也日渐提高。弹力织物风靡国际市场，国内高弹类织物的原料主要依赖于氨纶，但是氨纶弹性大，易滑动而极少单独使用作为织物，一般采用其他纱线制成包芯纱或包覆纱供织造。氨纶织造工艺复杂，而且染色性差。目前，市场上有开发出一种三维卷曲弹性短纤维，它是采用单组分PET三维卷曲中空纤维经过机械卷曲机卷曲后再通过松弛热定型机定型后的生产方法制得机械卷曲弹性纤维。三维中空纤维弹性形成的生产方法主要通过卷曲机加工而成，经过试验证明，采用中空纤维生产法生产的弹性纤维，可纺性较好，密度小，松性也比较好，但是由于常规三维中空纤维为单组分纤维，蓬松性、手感均较羊毛相差非常大，且弹性很小甚至没有弹性。
近年来，复合纤维受到广泛关注和研究，复合纤维是多组份纤维的一种，在同一根纤维截面上存在两种或两种以上不相混合的聚合物纤维，如PET/PTT复合纤维、PET/PBT复合纤维等复合纤维。如申请号为201810987214.0的中国发明专利申请(公司自有申请)公开了一种弹性复合纤维及其制造方法，具体包括纤维本体低粘度PET、高粘度PET以及PTT，通过三种材料在相应工艺可以制备弹性复合纤维，但该弹性复合纤维存在三维卷曲程度一般，热稳定性能不佳的缺陷。
鉴于此，本案发明人对上述问题进行深入研究，遂有本案产生。
发明内容
针对上述现有技术的不足，本发明的目的在于提供一种弹性复合纤维及其制造方法，本发明通过PTT/PET/PBT复合纤维制备，通过材料之间合理配合以及理化性能之间的差异，可以得到更为蓬松，三维立体结构更为明显、热稳定更佳的材料。
为实现上述目的，本发明采取如下的技术方案：
一种弹性复合纤维，包括纤维本体，其特征在于，纤维本体由如下重量百分比的 物质组成经复合纺丝而成：低粘度PET10％-90％，高粘度PET10％-90％，PTT10-80％，PBT10-80％。
作为本发明的一种优选方式，所述低粘度PET的粘度为0.4-0.7dL/g，所述高粘度PET的粘度为0.7-0.9dL/g，所述PTT粘度为0.7-1.3dL/g，所述PBT粘度为0.7-1.3dL/g，所述纤维本体的卷曲数5-15个/cm。
作为本发明的一种优选方式，所述低粘度PET的重量百分比为20％，所述高粘度PET的重量百分比20％，所述PTT的重量百分比为30％，所述的PBT的重量百分比为30％。
相应地，本发明还提出了一种弹性复合纤维的制造方法，包括如下步骤：
步骤A：将低粘度PET、高粘度PET、PTT、PBT进行干燥，干燥至含水量低于15ppm，低粘度PET的粘度为0.4-0.7dL/g，高粘度PET的粘度为0.7-0.9dL/g，PTT粘度为0.7-1.3dL/g，PBT粘度为0.8-1.2dL/g；
步骤B：分别将低粘度PET、高粘度PET、PTT、PBT投入螺杆挤出机中进行熔融挤出，并通过计量泵计量送入复合纺丝组件，低粘度PET的重量百分比占总物料的10％-90％，高粘度PET的重量百分比占总物料的10-90％，PTT的重量百分比占总物料的10-80％，PBT的重量百分比占总物料的10-80％；从复合纺丝组件出来的熔体引入喷丝板喷出，喷出后形成一种具有并列形状的真空丝束，再经过纺丝、环吹冷却、上油、卷绕、落桶后制得无卷曲毛条纤维原丝；
步骤C：将步骤B得到的纤维原丝20小时平衡后进行定型，定型采用紧张热定型或者松式定型，其中，紧张热定型采用第一牵引辊、第二牵引辊、第三牵引辊以及第四牵引辊进行拉伸定型。
作为本发明的一种优选方式，所述复合纺丝组件为一种大容量双通道复合纺丝装置的纺丝构件，其由上壳体、滤腔、分配板A、分配板B、分配板C、喷丝板、压块和下壳体构成(专利号2016203355293所公开的装置)。
作为本发明的一种优选方式，第一牵引辊速度220-280m/min，温度为150-170℃； 第二牵引辊速度222-282m/min，温度为170-180℃；第三牵引辊速度225-285m/min，温度为170-180℃；第四牵引辊速度230-290m/min，温度为180℃。
作为本发明的一种优选方式，松式热定型的温度为80-120℃，时间为2-6min。
与现有技术相比较，本发明具有以下有益效果：
1、本发明解决PET、PTT、PBT三种纤维的复合弹性纤维的市场空白；
2、本发明集PET、PTT、PBT三种纤维的优点于一身，不仅具有可纺性好、强度高、弹性佳、柔软舒适、易染、吸湿等优点，还通过材料之间合理配合以及理化性能之间的差异，使复合纤维三维立体结构更加显著，热稳定性更好；
3、本发明采用PET、PTT和PBT的不同分子结构与结晶特性产生的复合自卷曲弹性特性，再通过大容量双通道复合纺丝装置的纺丝构件进而生产出一种并列PTT/PET/PBT复合弹性短纤维，该纤维具有非常好的蓬松性、柔软、色彩鲜艳，且具有一定弹性和弹性回复性，并且三维立体结构更加显著，热稳定性更好，解决传统弹性纤维价格昂贵、蓬松性差、手感差、染色性差、易脱色等问题；
4、本发明相对氨纶材料，减少了包芯纱制造工艺，精简了操作流程，大大节省了人工费用，减少了资源浪费。
5、本发明所生产的复合材料应用范围广，适合生产地毯、便衣、时装、内衣、运动衣、泳装及袜子等。
具体实施方式
下面结合实施例对本发明作进一步地详细说明，但本发明的实施方式不限于此，在不脱离本发明上述技术思想情况下，根据本领域普通技术知识和惯用手段，做出各种替换和变更，均应包括在本发明的范围内。
实施例1：
一种弹性复合纤维的制造方法，包括如下步骤：
步骤A：将低粘度PET、高粘度PET、PTT、PBT进行干燥，干燥至含水量低于15ppm，低粘度PET的粘度为0.42dL/g，高粘度PET的粘度为0.83dL/g，PTT粘度为0.92dL/g，PBT粘度为0.92dL/g；
步骤B：分别将低粘度PET、高粘度PET、PTT、PBT投入螺杆挤出机中进行熔融挤出，并通过计量泵计量送入复合纺丝组件，该复合纺丝组件为一种大容量双通道复合纺丝装置的纺丝构件，低粘度PET的重量百分比占总物料的20％，高粘度PET的重量百分比占总物料的20％，PTT的重量百分比占总物料的30％，PBT的重量百分比占总物料的30％；从复合纺丝组件出来的熔体引入喷丝板喷出，喷出后形成一种具有并列形状的真空丝束，再经过纺丝、环吹冷却、上油、卷绕、落桶后制得无卷曲毛条纤维原丝；
步骤C：将步骤B得到的纤维原丝20小时平衡后进行定型，定型采用紧张热定型，紧张热定型采用第一牵引辊、第二牵引辊、第三牵引辊以及第四牵引辊进行拉伸定型，其中，第一牵引辊速度250m/min，温度为160℃；第二牵引辊速度250m/min，温度为175℃，第三牵引辊速度250m/min，温度为175℃，第四牵引辊速度250m/min，温度为180℃。本实施例采用第一牵引辊、第二牵引辊、第三牵引辊以及第四牵引辊均可以采用多根，各牵引辊的温度依次上升，使得纤维温度受热更均匀，纤维成型结构更好，更稳定。
采用实施例1，得到的复合纤维的相关性能参数如下：
强力cN/dtex 4.3
模量cN/dtex 50
断裂伸长率(％) 38
沸水收缩率(％) 12
卷曲数(个/cm) 23
蓬松度(150g) 85％
实施例2：
步骤A：将低粘度PET、高粘度PET、PTT、PBT进行干燥，干燥至含水量低于15ppm，低粘度PET的粘度为0.42dL/g，高粘度PET的粘度为0.83dL/g，PTT粘度为0.92dL/g，PBT粘度为0.92dL/g；
步骤B：分别将低粘度PET、高粘度PET、PTT、PBT投入螺杆挤出机中进行熔融挤出，并通过计量泵计量送入复合纺丝组件，该复合纺丝组件为一种大容量双通道复合纺丝装置的纺丝构件，低粘度PET的重量百分比占总物料的20％，高粘度PET的重量百分比占总物料的20％，PTT的重量百分比占总物料的30％，PBT的重量百分比占总物料的30％；从复合纺丝组件出来的熔体引入喷丝板喷出，喷出后形成一种具有并列形状的丝束，再经过纺丝、环吹冷却、上油、卷绕、落桶后制得无卷曲毛条纤维原丝；
步骤C：将步骤B得到的纤维进行定型，定型采用松式定型，松式定型的温度为100℃，时间为4min。纤维在定型的过程中，释放了内应力，大分子的排列未达到最稳定的状态，纤维卷曲形态稳定，松式定型利用无张力状态，使得纤维充分松弛，消除了纤维内部应力，使得纤维结构完善，形态稳定。
采用实施例2，得到的复合纤维的相关性能参数如下：
强力cN/dtex 4.1
模量cN/dtex 53
断裂伸长率(％) 44
沸水收缩率(％) 11
卷曲数(个/cm) 23
蓬松度(150g) 87％
实施例3：
一种弹性复合纤维的制造方法，包括如下步骤：
步骤A：将低粘度PET、高粘度PET、PTT、PBT进行干燥，干燥至含水量低于15ppm，低粘度PET的粘度为0.55dL/g，高粘度PET的粘度为0.75dL/g，PTT粘度为0.95dL/g，PBT粘度为0.95dL/g；
步骤B：分别将低粘度PET、高粘度PET、PTT、PBT投入螺杆挤出机中进行熔融挤出，并通过计量泵计量送入复合纺丝组件，该复合纺丝组件为一种大容量双通道复 合纺丝装置的纺丝构件，低粘度PET的重量百分比占总物料的20％，高粘度PET的重量百分比占总物料的20％，PTT的重量百分比占总物料的30％，PBT的重量百分比占总物料的30％；从复合纺丝组件出来的熔体引入喷丝板喷出，喷出后形成一种具有并列形状的丝束，再经过纺丝、环吹冷却、上油、卷绕、落桶后制得无卷曲毛条纤维原丝；
步骤C：将步骤B得到的纤维原丝20小时平衡后进行定型，定型采用紧张热定型，紧张热定型采用第一牵引辊、第二牵引辊、第三牵引辊以及第四牵引辊进行拉伸定型，其中，第一牵引辊速度250m/min，温度为160℃；第二牵引辊速度250m/min，温度为175℃，第三牵引辊速度250m/min，温度为175℃，第四牵引辊速度250m/min，温度为180℃。
采用实施例3，得到的复合纤维的相关性能参数如下：
强力cN/dtex 4.0
模量cN/dtex 48
断裂伸长率(％) 45
沸水收缩率(％) 13
卷曲数(个/cm) 26
蓬松度(150g) 90％
实施例4-6
除低粘度PET、高粘度PET、PTT以及PBT的重量比不同，制作方法与实施例3相同，得到的弹性复合纤维的相关性能参数如下：
Figure PCTCN2019102830-appb-000001
Figure PCTCN2019102830-appb-000002
实施例7-9
除低粘度PET、高粘度PET、PTT以及PBT的粘度不同，制作方法与实施例三相同，得到的复合纤维的相关性能参数如下：
Figure PCTCN2019102830-appb-000003
本发明中螺杆挤出机，螺杆分成五区，螺杆五区温度分别为265℃、275℃、280℃、280℃、275℃。
本发明中，从喷丝板出来的纤维采用环吹风冷却，温度20℃、风速2m/s。
本发明中，底粘度PET可以采用对苯二甲酸和过量的二元醇进行聚合得到，聚合过程中二元醇过量的33％(摩尔比)，其中，二元醇使用1，2-丙二醇和一缩二乙二醇， 1，2-丙二醇与一缩二乙二醇的摩尔比控制在70：30-50：50，随着一缩二乙二醇所占摩尔比的增大，低粘度的PET流动性在增加，强度则逐渐下降。高粘度PET可以在常规PET中通过增粘处理，具体采用液相增粘工艺，通过抽提液态小分子从而达到提纯和增加粘度的作用，增粘处理后的PET刚性增加，强度增大对于提升复合纤维的硬度有重要作用。本发明中的PTT和PBT可以采用市面上的常规PTT和PBT。
对照例
201810987214.0的技术方案
除低粘度PET、高粘度PET、PTT的重量比不同，制作方法与实施例三相同，得到的弹性复合纤维的相关性能参数如下：
Figure PCTCN2019102830-appb-000004
Figure PCTCN2019102830-appb-000005
Figure PCTCN2019102830-appb-000006
通过本发明实施例1-9生产的复合纤维与对照例(201810987214.0的技术方案
)生产的复合纤维的相关参数对比可知，本发明方法生产的复合纤维不仅强度更高，而且三维卷曲程度明显更好，热稳定性明显更好。
尽管已经对上述各实施例进行了描述，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例做出另外的变更和修改，所以以上所述仅为本发明的实施例，并非因此限制本发明的专利保护范围，凡是利用本发明说明书所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围之内。

Claims (7)

  1. 一种弹性复合纤维，包括纤维本体，其特征在于，纤维本体由如下重量百分比的物质组成经复合纺丝而成：低粘度PET10％-90％，高粘度PET10％-90％，PTT10-80％，PBT10-80％。
  2. 根据权利要求1所述一种弹性复合纤维，其特征在于，所述低粘度PET的粘度为0.4-0.7dL/g，所述高粘度PET的粘度为0.7-0.9dL/g，所述PTT粘度为0.7-1.3dL/g，所述PBT粘度为0.7-1.3dL/g，所述纤维本体的卷曲数5-15个/cm。
  3. 根据权利要求2所述一种弹性复合纤维，其特征在于，所述低粘度PET的重量百分比为20％，所述高粘度PET的重量百分比20％，所述PTT的重量百分比为30％，所述的PBT的重量百分比为30％。
  4. 一种弹性复合纤维的制造方法，其特征在于，包括如下步骤：
    步骤A：将低粘度PET、高粘度PET、PTT、PBT进行干燥，干燥至含水量低于15ppm，低粘度PET的粘度为0.4-0.7dL/g，高粘度PET的粘度为0.7-0.9dL/g，PTT粘度为0.7-1.3dL/g，PBT粘度为0.8-1.2dL/g；
    步骤B：分别将低粘度PET、高粘度PET、PTT、PBT投入螺杆挤出机中进行熔融挤出，并通过计量泵计量送入复合纺丝组件，低粘度PET的重量百分比占总物料的10％-90％，高粘度PET的重量百分比占总物料的10-90％，PTT的重量百分比占总物料的10-80％，PBT的重量百分比占总物料的10-80％；从复合纺丝组件出来的熔体引入喷丝板喷出，喷出后形成一种具有并列形状的真空丝束，再经过纺丝、环吹冷却、上油、卷绕、落桶后制得无卷曲毛条纤维原丝；
    步骤C：将步骤B得到的纤维原丝20小时平衡后进行定型，定型采用紧张热定型或者松式定型，其中，紧张热定型采用第一牵引辊、第二牵引辊、第三牵引辊以及第四牵引辊进行拉伸定型。
  5. 根据权利要求4所述一种弹性复合纤维的制造方法，其特征在于，所 述复合纺丝组件为一种大容量双通道复合纺丝装置的纺丝构件，其由上壳体、滤腔、分配板A、分配板B、分配板C、喷丝板、压块和下壳体构成。
  6. 根据权利要求4或5所述一种弹性复合纤维的制造方法，其特征在于，第一牵引辊速度220-280m/min，温度为150-170℃；第二牵引辊速度222-282m/min，温度为170-180℃；第三牵引辊速度225-285m/min，温度为170-180℃；第四牵引辊速度230-290m/min，温度为180℃。
  7. 根据权利要求4或5所述一种弹性复合纤维的制造方法，其特征在于，松式定型的温度为80-120℃，时间为2-6min。
PCT/CN2019/102830 2019-05-21 2019-08-27 一种弹性复合纤维及其制造方法 WO2020232876A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2021547623A JP7200390B2 (ja) 2019-05-21 2019-08-27 弾性複合繊維及びその製造方法
EP19930025.2A EP3974565A4 (en) 2019-05-21 2019-08-27 ELASTIC COMPOSITE FIBER AND METHOD FOR MAKING IT
US17/285,534 US20210388536A1 (en) 2019-05-21 2019-08-27 Elastic composite fiber and fabrication method therefor
KR1020217011323A KR20210052553A (ko) 2019-05-21 2019-08-27 탄성 복합 섬유 및 그 제조 방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910423144.0 2019-05-21
CN201910423144.0A CN110029408B (zh) 2019-05-21 2019-05-21 一种弹性复合纤维及其制造方法

Publications (1)

Publication Number Publication Date
WO2020232876A1 true WO2020232876A1 (zh) 2020-11-26

Family

ID=67242877

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/102830 WO2020232876A1 (zh) 2019-05-21 2019-08-27 一种弹性复合纤维及其制造方法

Country Status (6)

Country Link
US (1) US20210388536A1 (zh)
EP (1) EP3974565A4 (zh)
JP (1) JP7200390B2 (zh)
KR (1) KR20210052553A (zh)
CN (1) CN110029408B (zh)
WO (1) WO2020232876A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110029408B (zh) * 2019-05-21 2020-05-05 上海海凯生物材料有限公司 一种弹性复合纤维及其制造方法
CN111534887B (zh) * 2020-05-13 2022-07-19 上海海凯生物材料有限公司 一种三组分并列型复合弹性短纤维及其制造方法
CN114855288A (zh) * 2022-04-29 2022-08-05 宁波大千纺织品有限公司 一种超高卷曲度pet聚酯纤维及其制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1676685A (zh) * 2005-04-15 2005-10-05 绍兴兴虹化纤工业有限公司 三组份自卷曲长丝的生产方法
CN105908268A (zh) * 2016-07-05 2016-08-31 雷鸣 一种高抗起毛起球和高耐磨的三组份复合纤维及其制备方法
CN205576365U (zh) 2016-04-20 2016-09-14 海兴材料科技有限公司 一种大容量双通道复合纺丝装置的纺丝构件
CN107268118A (zh) * 2017-06-20 2017-10-20 海安县中山合成纤维有限公司 一种ptt、pet和pbt复合化纤材料
CN109137137A (zh) 2018-08-28 2019-01-04 上海海凯生物材料有限公司 一种弹性复合纤维及其制造方法
CN110029408A (zh) * 2019-05-21 2019-07-19 上海海凯生物材料有限公司 一种弹性复合纤维及其制造方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1867619A (en) * 1932-02-26 1932-07-19 American Glanzstoff Corp Drying of artificial filaments
USRE28843E (en) * 1968-02-19 1976-06-08 Rhone-Poulenc-Textile, S.A. Textured polyethylene terephthalate yarns
ATE209712T1 (de) * 1995-05-08 2001-12-15 Shell Int Research Verfahren zur herstellung von polypropylenterephthalatgarnen
KR100481093B1 (ko) * 2003-04-24 2005-04-07 주식회사 휴비스 잠재권축성이 우수한 폴리에스테르계 복합섬유 및 그제조방법
JP2007186830A (ja) * 2006-01-16 2007-07-26 Eiheiji Sizing Kk ポリエステル繊維
WO2012132851A1 (ja) * 2011-03-29 2012-10-04 東レ株式会社 液晶ポリエステル繊維およびその製造方法
CN104141178A (zh) * 2014-07-31 2014-11-12 江苏盛虹科技股份有限公司 一种pet复合弹性纤维及其制备方法
CN104593904A (zh) * 2015-02-06 2015-05-06 海兴材料科技有限公司 一种无机械卷曲ptt/pet并列复合弹性短纤维的生产方法
JP6790404B2 (ja) * 2016-03-25 2020-11-25 東レ株式会社 複合捲縮糸
CN106149071B (zh) * 2016-08-31 2018-11-06 王家铭 双组份喷丝板外复合并列型自卷曲弹性短纤维及生产方法
US10760186B2 (en) * 2017-03-29 2020-09-01 Welspun Flooring Limited Manufacture of bi-component continuous filaments and articles made therefrom
CN107502975B (zh) * 2017-08-31 2020-10-02 江苏中杰澳新材料有限公司 卷曲变形涤纶导电长丝、制造方法及其应用

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1676685A (zh) * 2005-04-15 2005-10-05 绍兴兴虹化纤工业有限公司 三组份自卷曲长丝的生产方法
CN205576365U (zh) 2016-04-20 2016-09-14 海兴材料科技有限公司 一种大容量双通道复合纺丝装置的纺丝构件
CN105908268A (zh) * 2016-07-05 2016-08-31 雷鸣 一种高抗起毛起球和高耐磨的三组份复合纤维及其制备方法
CN107268118A (zh) * 2017-06-20 2017-10-20 海安县中山合成纤维有限公司 一种ptt、pet和pbt复合化纤材料
CN109137137A (zh) 2018-08-28 2019-01-04 上海海凯生物材料有限公司 一种弹性复合纤维及其制造方法
CN110029408A (zh) * 2019-05-21 2019-07-19 上海海凯生物材料有限公司 一种弹性复合纤维及其制造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3974565A4

Also Published As

Publication number Publication date
JP7200390B2 (ja) 2023-01-06
EP3974565A1 (en) 2022-03-30
US20210388536A1 (en) 2021-12-16
CN110029408B (zh) 2020-05-05
KR20210052553A (ko) 2021-05-10
CN110029408A (zh) 2019-07-19
JP2022509330A (ja) 2022-01-20
EP3974565A4 (en) 2023-08-02

Similar Documents

Publication Publication Date Title
CN102517680B (zh) 一种多孔超细旦聚酰胺6 poy/fdy交络复合纤维、制备方法及其设备
CN102493016B (zh) 一种多孔超细旦聚酰胺6全拉伸丝、制备方法及其设备
WO2020232876A1 (zh) 一种弹性复合纤维及其制造方法
CN102443909A (zh) 一种多孔微细旦聚酯poy、fdy交络复合丝的制备方法
CN107574507B (zh) 一种三维卷曲弹性纤维及其制备方法
CN101481832A (zh) 一种复合高弹记忆纤维
WO2016127833A1 (zh) 一种醋腈纤维及其制备方法
WO2021135083A1 (zh) 一种仿棉聚酯纤维及其制备方法
CN103184582B (zh) 一种pva复合高强度高模量纤维素纤维的制备方法
CN109943914B (zh) 一种柔软吸湿卷曲短纤维及其制备方法和应用
CN106400168B (zh) 一种多孔超柔软仿棉聚酯纤维及其制备方法
CN111534887B (zh) 一种三组分并列型复合弹性短纤维及其制造方法
CN109023564B (zh) 一种聚乳酸有色短纤维的制备方法
CN103882546A (zh) 一种高收缩超细腈纶纤维及其制备方法
CN103590140B (zh) 一种仿麻型多重多异复合短纤及其制造方法
CN102965759A (zh) 一种高仿棉改性纤维素酯/聚酯皮芯复合纤维及其制备方法
CN111519276A (zh) 一种高收缩聚酰胺纤维及其制备方法和应用
CN112064159A (zh) 一种亚麻纤维混纺纱线及其生产工艺
CN102888669A (zh) 涤纶卷曲丝的生产工艺及其工艺设备
CN106435802A (zh) 一种花生型截面腈纶纤维及其生产方法
CN103088501A (zh) 一种改性锦纶丝的生产工艺
CN111118634B (zh) 一种高弹缩丝及其制备方法
CN104294394A (zh) Poy复合长丝多道预网络长丝的加工工艺
CN115074868B (zh) 一种预氧丝的制备方法及预氧丝
CN108582931A (zh) 一种具有阻燃功能的汉麻混纺面料

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19930025

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20217011323

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2021547623

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2019930025

Country of ref document: EP

Effective date: 20211221