CN114672898A - Composite monofilament and preparation method thereof - Google Patents

Composite monofilament and preparation method thereof Download PDF

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Publication number
CN114672898A
CN114672898A CN202210227096.XA CN202210227096A CN114672898A CN 114672898 A CN114672898 A CN 114672898A CN 202210227096 A CN202210227096 A CN 202210227096A CN 114672898 A CN114672898 A CN 114672898A
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core layer
skin layer
monofilament
composite
composite monofilament
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Chinese (zh)
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蔡俊霖
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Fujian Fengyuansheng Textile Technology Co ltd
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Fujian Fengyuansheng Textile Technology Co ltd
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00General methods for the manufacture of artificial filaments or the like
    • D01F1/02Addition of substances to the spinning solution or to the melt
    • D01F1/10Other agents for modifying properties

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Artificial Filaments (AREA)
  • Multicomponent Fibers (AREA)

Abstract

The invention discloses a composite monofilament and a preparation method thereof, wherein the composite monofilament comprises a core layer and a skin layer arranged outside the core layer, the core layer is made of PET, and the skin layer is made of silane modified PET; the composite mass ratio of the core layer to the skin layer is (3-7) to (7-3), and the diameter of the composite monofilament is 1-1.5 mm. The composite monofilament obtained by the invention has good hydrophobicity and oleophobicity, and good mechanical property and compatibility.

Description

Composite monofilament and preparation method thereof
Technical Field
The invention relates to a composite fiber material and a preparation method thereof, in particular to a composite monofilament and a preparation method thereof.
Background
As a composite fiber material, the composite monofilament has the advantages of smooth surface, gorgeous color, water resistance, oil resistance, ultraviolet resistance, flame retardance, coolness, wear resistance, long service life and the like, so that the composite monofilament is widely applied to various products such as outdoor leisure articles, furniture decoration, beach chairs, hammocks, curtains, automobile cushion foot pads, door mats, decorative articles and the like. PET is one of the most widely used synthetic polymers for human beings at present, is synthesized as early as 40 s in the twentieth century, has excellent performance, and is widely applied to the fields of textile, packaging, medical sanitation, automobiles, electronic and electric appliances, safety protection, environmental protection and the like. With the progress of society and the improvement of living standard of people, the demand of differentiation and functionalization of polyester fibers is higher and higher.
However, the composite monofilaments currently used still have the following problems: the application of PET in textile and packaging materials has certain limitation, and the main problems are that the existing composite monofilament contains polyester with low molecular weight, cannot meet the requirements of spinning and film forming, and has poor waterproof and antifouling functions; in order to improve the performance of PET, PET is often used in a composite with other polyester materials, however, there is a problem that PET is poorly compatible with other materials.
Disclosure of Invention
Based on the above situation, the present invention aims to provide a composite monofilament and a preparation method thereof, wherein the composite monofilament obtained by the present invention has good hydrophobicity, good mechanical properties and good compatibility, and can effectively solve the above problems.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a composite monofilament comprises a core layer and a skin layer arranged outside the core layer, wherein the core layer is made of PET, and the skin layer is made of silane modified PET; the composite mass ratio of the core layer to the skin layer is (3-7) to (7-3), and the diameter of the composite monofilament is 1-1.5 mm.
The compatibility between the core layer monofilament and the skin layer of the composite monofilament is better, so that the adhesion between the core layer monofilament and the skin layer is firmer, the wear resistance of the composite monofilament is improved, and the service life of the composite monofilament is prolonged. Meanwhile, the improved skin layer has good hydrophobic property and oleophobic property.
Preferably, the skin layer is prepared by the following method:
(1) mixing a silane coupling agent and ETFE resin powder according to the mass ratio of (1-2) to (10-20) to prepare silanized ETFE resin;
(2) mixing PET with the silanized ETFE resin obtained in the step (1) and the polyolefin elastomer POE by using a high-speed mixer, and drying after mixing to obtain a mixture; wherein the mass ratio of PET to ETFE resin powder to the polyolefin elastomer is (20-100): (10-20): 5-10).
Preferably, the mixing time in the step (2) is 15-30 min, and the mixing speed is as follows: 500-.
Preferably, the silane coupling agent is KH-550 silane coupling agent.
The invention also provides a preparation method of the composite monofilament, which comprises the following steps:
s1, drying the core layer material, melting by a screw, spinning, stretching, shaping, and ultrasonically cleaning to prepare core layer monofilaments;
s2, drying the skin layer, melting by a screw rod and preparing the skin layer;
s3, compounding and spinning the core layer monofilament prepared in the step S1 and the skin layer monofilament prepared in the step S2, cooling in a water bath, and finally winding and forming to prepare the chemical resistant composite monofilament.
Preferably, in step S1, the spinning temperature is: 260 ℃ and 280 ℃, spinning speed: 50-300 m/min; and during the stretching and setting, the stretching ratio is as follows: 3-5, setting temperature: 150 ℃ and 200 ℃.
Preferably, in step S2, the temperature of the extruder barrel used for melting the screw is 250-280 ℃,
the die temperature was 270 ℃ and 300 ℃.
Preferably, in step S3, the spinning temperature is 290 ℃.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the compatibility between the core layer monofilament and the skin layer of the composite monofilament provided by the invention is better, so that the adhesion between the core layer monofilament and the skin layer is firmer, the wear resistance of the composite monofilament is improved, and the service life of the composite monofilament is prolonged. Meanwhile, the composite monofilament obtained by the invention has good hydrophobic and oleophobic properties. In addition, in the preparation method of the composite monofilament provided by the invention, the compounding and spinning work of the composite monofilament and the preparation work of the core layer monofilament are completed on the same production line, so that intermediate links are reduced, and the preparation cost of the composite monofilament can be further reduced. In addition, both the PET in the core layer raw material and the PET in the skin layer raw material can be prepared by adopting recycled PET, and can also be recycled.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1-a core layer; 2-cortex layer.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in connection with specific examples, which should not be construed as limiting the present patent.
The test methods or test methods described in the following examples are all conventional methods unless otherwise specified; the reagents and materials, unless otherwise specified, are either commercially available from conventional sources or are prepared in conventional manners.
Example 1:
as shown in fig. 1, the composite monofilament includes a core layer 1 and a skin layer 2 disposed outside the core layer 1, wherein the core layer 1 is made of PET, and the skin layer 2 is made of PET modified by silane; the composite mass ratio of the core layer 1 to the skin layer 2 is 7:3, and the diameter of the composite monofilament is 1.5 mm.
The preparation method of the composite monofilament comprises the following steps:
s1, drying the core layer material, melting by a screw, spinning, stretching, shaping, and ultrasonically cleaning to prepare core layer monofilaments; wherein the spinning temperature is: 280 ℃, spinning speed: 300 m/min; and during the stretching and setting, the stretching ratio is as follows: 5, setting temperature: at 200 ℃.
S2, drying the skin layer material, and melting the screw to obtain the skin layer, wherein the extruder barrel temperature for melting the screw is 260 ℃, and the die head temperature is 280 ℃.
Wherein, the preparation process of the skin layer material is as follows:
(1) mixing a silane coupling agent and ETFE resin powder according to a mass ratio of 1:10 to prepare silanized ETFE resin;
(2) Mixing PET with the silanized ETFE resin obtained in the step (1) and the polyolefin elastomer POE by using a high-speed mixer, and drying after mixing to obtain a mixture; wherein the mass ratio of PET to ETFE resin powder to the polyolefin elastomer is 20:10: 5; mixing time was 15min, mixing speed was: 500 revolutions per minute, the drying temperature of 120 ℃ and the drying time of 2 hours.
S3, compounding and spinning the core layer monofilament prepared in the step S1 and the skin layer monofilament prepared in the step S2, cooling in a water bath, and finally winding and forming to prepare the chemical resistant composite monofilament. Wherein the spinning temperature is 290 ℃.
Example 2:
as shown in fig. 1, the composite monofilament comprises a core layer 1 and a skin layer 2 arranged outside the core layer, wherein the core layer 1 is made of PET, and the skin layer 2 is made of silane modified PET; the composite mass ratio of the core layer 1 to the skin layer 2 is 3:7, and the diameter of the composite monofilament is 1 mm.
The preparation method of the composite monofilament comprises the following steps:
s1, drying the core layer material, melting by a screw, spinning, stretching, shaping, and ultrasonically cleaning to prepare core layer monofilaments; wherein the spinning temperature is: 260 ℃, spinning speed: 50 m/min; and during the stretching and setting, the stretching ratio is as follows: 3, setting temperature: at 150 ℃.
S2, drying the skin layer material, and melting the screw to obtain the skin layer, wherein the barrel temperature of an extruder adopted for melting the screw is 280 ℃, and the die head temperature is 300 ℃.
Wherein, the preparation process of the skin layer material is as follows:
(1) mixing a silane coupling agent and ETFE resin powder according to a mass ratio of 2:10 to prepare silanized ETFE resin;
(2) mixing PET with the silanized ETFE resin obtained in the step (1) and the polyolefin elastomer POE by using a high-speed mixer, and drying after mixing to obtain a mixture; wherein the mass ratio of PET to ETFE resin powder to the polyolefin elastomer is 100:20: 10; the mixing time was 30min, the mixing speed was: 800 revolutions per minute, the drying temperature is 120 ℃, and the drying time is 4 hours;
s3, compounding and spinning the core layer monofilament prepared in the step S1 and the skin layer monofilament prepared in the step S2, cooling in a water bath, and finally winding and forming to prepare the chemical resistant composite monofilament. Wherein the spinning temperature is 290 ℃.
Example 3:
as shown in fig. 1, the composite monofilament comprises a core layer 1 and a skin layer 2 arranged outside the core layer, wherein the core layer 1 is made of PET, and the skin layer 2 is made of silane modified PET; the composite mass ratio of the core layer 1 to the skin layer 2 is 1:1, and the diameter of the composite monofilament is 1.2 mm.
The preparation method of the composite monofilament comprises the following steps:
s1, drying the core layer material, melting by a screw, spinning, stretching, shaping, and ultrasonically cleaning to prepare core layer monofilaments; wherein the spinning temperature is: 270 ℃, spinning speed: 100 m/min; and during the stretching and setting, the stretching ratio is as follows: 4, setting temperature: 180 ℃ is carried out.
S2, drying the skin layer material, melting by a screw rod to prepare the skin layer, wherein the temperature of a material cylinder of an extruder adopted for melting by the screw rod is 250 ℃, and the temperature of a die head is 270 ℃.
Wherein, the preparation process of the skin layer material is as follows:
(1) mixing a silane coupling agent and ETFE resin powder according to a mass ratio of 1:20 to prepare silanized ETFE resin;
(2) mixing PET with the silanized ETFE resin and the polyolefin elastomer POE obtained in the step (1) by using a high-speed mixer, and drying after mixing to obtain a mixture; wherein the mass ratio of PET to ETFE to the polyolefin elastomer is 100:20: 5; the mixing time was 20min, the mixing speed was: 600 revolutions per minute, the drying temperature is 120 ℃, and the drying time is 4 hours;
s3, compounding and spinning the core layer monofilament prepared in the step S1 and the skin layer monofilament prepared in the step S2, cooling in a water bath, and finally winding and forming to prepare the chemical resistant composite monofilament. Wherein the spinning temperature is 290 ℃.
Comparative example 1:
a composite monofilament comprises a core layer and a skin layer arranged outside the core layer, wherein the core layer is made of PET (polyethylene terephthalate), and the skin layer is made of PET; the composite mass ratio of the core layer to the skin layer is 1:1, and the diameter of the composite monofilament is 1.2 mm.
The preparation method of the composite monofilament comprises the following steps:
s1, drying the core layer material, melting by a screw, spinning, stretching, shaping, and ultrasonically cleaning to prepare core layer monofilaments; wherein the spinning temperature is: 270 ℃, spinning speed: 100 m/min; and during the stretching and setting, the stretching ratio is as follows: 4, setting temperature: 180 ℃ is carried out.
S2, drying the skin layer material, and melting the screw to obtain the skin layer, wherein the extruder barrel temperature adopted for melting the screw is 250 ℃, and the die head temperature is 270 ℃.
S3, compounding and spinning the core layer monofilament prepared in the step S1 and the skin layer monofilament prepared in the step S2, cooling in a water bath, and finally winding and forming to prepare the composite monofilament. Wherein the spinning temperature is 290 ℃.
Comparative example 2:
a composite monofilament comprises a core layer and a skin layer arranged outside the core layer, wherein the core layer is made of PBT (polybutylene terephthalate), and the skin layer is made of silane modified PET (polyethylene terephthalate); the composite mass ratio of the core layer to the skin layer is 3:7, and the diameter of the composite monofilament is 1 mm.
The preparation method of the composite monofilament comprises the following steps:
s1, drying the core layer material, melting by a screw, spinning, stretching, shaping, and ultrasonically cleaning to prepare core layer monofilaments; wherein the spinning temperature is: 260 ℃, spinning speed: 50 m/min; and during the stretching and setting, the stretching ratio is as follows: 3, setting temperature: at 150 ℃.
S2, drying the skin layer material, and melting the screw to obtain the skin layer, wherein the extruder barrel temperature for melting the screw is 260 ℃, and the die head temperature is 280 ℃.
The preparation process of the skin layer material is as follows:
(1) mixing a silane coupling agent and ETFE resin powder according to a mass ratio of 2:10 to prepare silanized ETFE resin;
(2) mixing PET with the silanized ETFE resin and the polyolefin elastomer POE obtained in the step (1) by using a high-speed mixer, and drying after mixing to obtain a mixture; wherein the mass ratio of PET to ETFE resin powder to the polyolefin elastomer is 100:20: 10; the mixing time was 30min, the mixing speed was: 800 revolutions per minute, the drying temperature is 120 ℃, and the drying time is 4 hours;
s3, compounding and spinning the core layer monofilament prepared in the step S1 and the skin layer monofilament prepared in the step S2, cooling in a water bath, and finally winding and forming to prepare the composite monofilament. Wherein the spinning temperature is 290 ℃.
Comparative example 3:
a composite monofilament comprises a core layer 1 and a skin layer 2 arranged outside the core layer, wherein the core layer is made of PET (polyethylene terephthalate), and the skin layer is made of modified PET; the composite mass ratio of the core layer to the skin layer is 3:7, and the diameter of the composite monofilament is 1 mm.
The preparation method of the composite monofilament comprises the following steps:
s1, drying the core layer material, melting by a screw, spinning, stretching, shaping, and ultrasonically cleaning to prepare core layer monofilaments; wherein the spinning temperature is: 260 ℃, spinning speed: 50 m/min; and during the stretching and setting, the stretching ratio is as follows: 3, setting temperature: at 150 ℃.
S2, drying the skin layer material, melting by a screw rod to prepare the skin layer, wherein the temperature of a material cylinder of an extruder adopted for melting by the screw rod is 250 ℃, and the temperature of a die head is 270 ℃.
The preparation process of the skin layer material is as follows:
(1) mixing PET, ETFE resin and polyolefin elastomer POE by using a high-speed mixer, and drying after mixing to obtain a mixture; wherein the mass ratio of PET to ETFE resin to polyolefin elastomer is 100:20: 10; the mixing time was 30min, the mixing speed was: 800 revolutions per minute, the drying temperature is 120 ℃, and the drying time is 4 hours;
s3, compounding and spinning the core layer monofilament prepared in the step S1 and the skin layer monofilament prepared in the step S2, cooling in a water bath, and finally winding and forming to prepare the composite monofilament. Wherein the spinning temperature is 290 ℃.
The fabrics made of the composite monofilaments obtained in examples 1 to 3 and comparative examples 1 to 3 were subjected to contact angle and elongation tests, respectively, and the test results are shown in table 1.
Table 1: test results of contact Angle and elongation
Figure BDA0003535965960000071
As shown in the table, compared with the prior art, the composite monofilament has better hydrophobic and oleophobic properties; meanwhile, compared with PBT-silane modified PET composite monofilaments with similar performance, the PET-silane modified PET has better compatibility, more excellent mechanical property and more comprehensive performance; meanwhile, in the preparation method of the composite monofilament provided by the invention, the compounding and spinning work of the composite monofilament and the preparation work of the core layer monofilament are finished on the same production line, so that intermediate links are reduced, and the preparation cost of the composite monofilament can be further reduced.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.

Claims (8)

1. The composite monofilament is characterized by comprising a core layer and a skin layer arranged outside the core layer, wherein the core layer is made of PET (polyethylene terephthalate), and the skin layer is made of silane modified PET; the composite mass ratio of the core layer to the skin layer is (3-7) to (7-3), and the diameter of the composite monofilament is 1-1.5 mm.
2. The composite monofilament according to claim 1, wherein said skin layer is prepared by the following process:
(1) mixing a silane coupling agent and ETFE resin powder according to the mass ratio of (1-2) to (10-20) to prepare silanized ETFE resin;
(2) mixing PET with the silanized ETFE resin obtained in the step (1) and the polyolefin elastomer POE by using a high-speed mixer, and drying after mixing to obtain a mixture; wherein the mass ratio of PET to ETFE resin powder to the polyolefin elastomer is (20-100): (10-20): 5-10).
3. The composite monofilament as claimed in claim 2, wherein the mixing time in step (2) is 15-30 min, and the mixing speed is: 500-.
4. The composite monofilament as claimed in claim 2, wherein the silane coupling agent is a KH-550 silane coupling agent.
5. A method for preparing a composite monofilament according to any one of claims 1 to 4, comprising the steps of:
S1, drying the core layer material, melting by a screw, spinning, stretching, shaping, and ultrasonically cleaning to prepare core layer monofilaments;
s2, drying the skin layer material, and melting by a screw rod to prepare the skin layer;
s3, compounding and spinning the core layer monofilament prepared in the step S1 and the skin layer monofilament prepared in the step S2, cooling in a water bath, and finally winding and forming to prepare the chemical resistant composite monofilament.
6. The method for preparing a composite monofilament according to claim 5, wherein in step S1, the spinning temperature is: 260 ℃ and 280 ℃, and the spinning speed is as follows: 50-300 m/min; during the stretching and setting, the stretching ratio is as follows: 3-5, setting temperature: 150 ℃ to 200 ℃.
7. The method for preparing composite monofilaments according to claim 5, wherein in step S2, the extruder barrel temperature for melting the screw is 250-280 ℃ and the die temperature is 270-300 ℃.
8. The method for preparing a composite monofilament as claimed in claim 5, wherein the spinning temperature in step S3 is 290 ℃.
CN202210227096.XA 2022-03-08 2022-03-08 Composite monofilament and preparation method thereof Pending CN114672898A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1388275A (en) * 2002-07-17 2003-01-01 中国石油化工股份有限公司 Far infrared magnetic fiber and its production process
CN1693547A (en) * 2005-04-27 2005-11-09 天津工业大学 Functional fiber and its manufacturing method
WO2009073543A2 (en) * 2007-11-30 2009-06-11 Dow Global Technologies Inc. Process and apparatus for molding fabrics comprising elastic polymeric fibres
CN105002596A (en) * 2015-08-04 2015-10-28 无锡金通化纤有限公司 Composite monofilament applied to material filtering base cloth and preparing method thereof
CN207207315U (en) * 2017-06-20 2018-04-10 华南理工大学 A kind of three-dimensional crimp core-skin composite fiber and nanofiber composite sound isolating material
CN111235690A (en) * 2020-04-08 2020-06-05 江苏江南高纤股份有限公司 Green composite short fiber and its prepn

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1388275A (en) * 2002-07-17 2003-01-01 中国石油化工股份有限公司 Far infrared magnetic fiber and its production process
CN1693547A (en) * 2005-04-27 2005-11-09 天津工业大学 Functional fiber and its manufacturing method
WO2009073543A2 (en) * 2007-11-30 2009-06-11 Dow Global Technologies Inc. Process and apparatus for molding fabrics comprising elastic polymeric fibres
CN105002596A (en) * 2015-08-04 2015-10-28 无锡金通化纤有限公司 Composite monofilament applied to material filtering base cloth and preparing method thereof
CN207207315U (en) * 2017-06-20 2018-04-10 华南理工大学 A kind of three-dimensional crimp core-skin composite fiber and nanofiber composite sound isolating material
CN111235690A (en) * 2020-04-08 2020-06-05 江苏江南高纤股份有限公司 Green composite short fiber and its prepn

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Application publication date: 20220628