CN112796005A - Sheath-core type two-component anti-static anti-ultraviolet fiber and preparation method thereof - Google Patents
Sheath-core type two-component anti-static anti-ultraviolet fiber and preparation method thereof Download PDFInfo
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- CN112796005A CN112796005A CN202011616508.6A CN202011616508A CN112796005A CN 112796005 A CN112796005 A CN 112796005A CN 202011616508 A CN202011616508 A CN 202011616508A CN 112796005 A CN112796005 A CN 112796005A
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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
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- 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
- D01D5/34—Core-skin structure; Spinnerette packs therefor
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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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
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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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
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Abstract
The invention discloses a sheath-core two-component antistatic ultraviolet resistance fiber and a preparation method thereof, wherein the sheath-core two-component antistatic ultraviolet resistance fiber comprises a sheath layer and a core layer, the sheath layer is a PBT polymer, the core layer is a PET polymer, and the mass ratio of the sheath layer to the core layer is 1: 1-5; wherein the PBT polymer is a polymer of PBT polyester and conductive functional powder; the PET polymer is a polymer of PET polyester and an anti-ultraviolet auxiliary agent. The invention adopts the skin-core structure bicomponent fiber to prepare the new antistatic uvioresistant fiber, the fiber diameter can be ultrafine fiber, the fiber can be made into light color, the permanent antistatic uvioresistant function, the mechanical property can reach the standard of common fiber, the requirements of various weaving can be completely met, the cost is equivalent to the antistatic uvioresistant after finishing, the pollution and the raw material cost are reduced, therefore, the invention can enlarge the export of textiles and improve the added value of the textiles.
Description
Technical Field
The invention belongs to the technical field of synthetic fibers, and particularly relates to a sheath-core two-component anti-static anti-ultraviolet fiber and a preparation method thereof.
Background
The problem of insufficient antistatic and uvioresistant performance is a persistent problem faced by chemical fiber fabrics, some solutions are provided at present, for example, the solutions are solved from the original source of fibers, terylene and nylon fibers can be prepared, for example, antistatic and uvioresistant fibers are prepared by adding an antistatic and uvioresistant agent, the requirements of the fabrics on antistatic and uvioresistant can be basically met, the antistatic and uvioresistant fibers are widely applied at present, but the fibers also have the irreparable defect: firstly, the antistatic fiber is mostly made of conductive filaments, the lowest price of the antistatic fiber in the current market is about 20 ten thousand per ton, the price of the ultraviolet resistant fiber is higher and is between 5 and 9 ten thousand per ton, and the price is higher than the cost of the traditional textile; secondly, the mechanical property of the fiber is poor, the knitted fabrics are more and more at present, particularly the warp-knitted fabrics are more and more widely applied, but the mechanical property of the fiber is higher, and the fiber added with the antistatic and uvioresistant agent influences the mechanical property of the fiber due to the influence of the antistatic and uvioresistant agent, so that the application range of the fiber is limited; thirdly, the heat resistance is poor, the application of the fiber in clothes and home textiles is limited by the characteristics of the material, the heat resistance of the fiber added with the antistatic and uvioresistant agent is lower than that of the common fiber, and the application range of the fiber is influenced.
At present, more fabrics on the market adopt the antistatic and ultraviolet resistant agent after-treatment to realize the antistatic and ultraviolet resistant functions of the fabrics, and compared with the mode of using conductive fibers, the mode has lower cost and obvious effect, thereby being used by most fabric manufacturers, but the mode is low in cost and effective, and has inevitable defects: 1) additional pollution, namely, the adoption of an antistatic and uvioresistant agent for after-treatment generally increases the pollution degree of the wastewater and increases the treatment difficulty of the wastewater at present; 2) the durability is not enough, the washing fastness of the currently adopted antistatic ultraviolet resistance after-finishing mode is poor, generally, the washing fastness which can meet the standard requirement is rare, the export of textiles is not facilitated, the competitive advantage of the textiles is reduced, and the dispute in trade is increased.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made keeping in mind the above and/or other problems occurring in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme: a sheath-core type two-component anti-static anti-ultraviolet fiber comprises a sheath layer and a core layer, wherein the sheath layer is a PBT polymer, the core layer is a PET polymer, and the mass ratio of the sheath layer to the core layer is 1: 1-5;
wherein the PBT polymer is a polymer of PBT polyester and conductive functional powder; the PET polymer is a polymer of PET polyester and an anti-ultraviolet auxiliary agent.
As a preferred scheme of the skin-core type two-component antistatic uvioresistant fiber, the invention comprises the following steps: the conductive functional powder is present in the PBT polymer in an amount of 2-10% by mass.
As a preferred scheme of the skin-core type two-component antistatic uvioresistant fiber, the invention comprises the following steps: the conductive functional powder is one of nitrogen-doped titanium dioxide, titanium dioxide deposited conductive zinc oxide, titanium dioxide deposited conductive tin oxide, conductive carbon black and conductive graphene.
As a preferred scheme of the skin-core type two-component antistatic uvioresistant fiber, the invention comprises the following steps: the anti-ultraviolet auxiliary agent is present in the PET polymer in an amount of 0.5-3% by mass.
As a preferred scheme of the skin-core type two-component antistatic uvioresistant fiber, the invention comprises the following steps: the anti-ultraviolet auxiliary agent is prepared from UV1020 anti-ultraviolet weather-resistant auxiliary agent, dibutyltin and ethylene glycol.
The invention also discloses a preparation method of the skin-core type two-component anti-static anti-ultraviolet fiber, which comprises the following steps,
carrying out double-screw melt co-extrusion on the conductive functional powder and PBT polyester to prepare a PBT functional slice, wherein the double-screw processing temperature is 225-270 ℃, and the screw rotating speed is 100-500 r/min;
preparing a PET functional slice by in-situ polymerization and grain cutting of the anti-ultraviolet additive and PET polyester, wherein the polymerization temperature is 270-290 ℃;
the sheath-core type two-component anti-static anti-ultraviolet fiber is prepared by taking a PBT functional slice as a sheath layer and a PET functional slice as a core layer, and respectively adding the sheath layer and the core layer into a double-screw composite spinning machine according to the mass ratio of 1: 1-5.
As an optimal scheme of the preparation method of the skin-core type two-component anti-static anti-ultraviolet fiber, the invention comprises the following steps: according to the preparation of the PBT functional chip, the conductive functional powder is blended with the PBT polyester in a mass ratio of 2-10%, wherein the particle size of the conductive functional powder is 20-100 nm.
As an optimal scheme of the preparation method of the skin-core type two-component anti-static anti-ultraviolet fiber, the invention comprises the following steps: according to the preparation of the PET functional slice, the anti-ultraviolet auxiliary agent is polymerized with PET polyester in a mass ratio of 0.5-3%.
As an optimal scheme of the preparation method of the skin-core type two-component anti-static anti-ultraviolet fiber, the invention comprises the following steps: the preparation method of the anti-ultraviolet auxiliary agent comprises the step of dissolving the UV1020 anti-ultraviolet weather-resistant auxiliary agent and dibutyltin in ethylene glycol according to a proportion.
As an optimal scheme of the preparation method of the skin-core type two-component anti-static anti-ultraviolet fiber, the invention comprises the following steps: the double-screw composite spinning machine has the advantages that the screw temperature of the PET functional chips is 270-300 ℃, the screw temperature of the PBT functional chips is 240-270 ℃, the spinning is generally carried out at a temperature higher than the melting point of 25-40 ℃ according to the specific melting points of PET and PBT materials, the spinning speed is lower than that of common fibers, and the spinning speed is 600-2600 m/min.
The invention has the beneficial effects that:
(1) the invention adopts the skin-core structure bicomponent fiber to prepare the new antistatic uvioresistant fiber, the fiber diameter can be ultrafine fiber, the fiber can be made into light color, the permanent antistatic uvioresistant function, the mechanical property can reach the standard of common fiber, the requirements of various weaving can be completely met, the cost is equivalent to the antistatic uvioresistant after finishing, the pollution and the raw material cost are reduced, therefore, the invention can enlarge the export of textiles and improve the added value of the textiles.
(2) The composite fiber has the functions of resisting static electricity and resisting ultraviolet, and because the antistatic layers of the skin layers of the composite fiber are uniformly distributed, the antistatic function of the fiber is equal to that of a conductive wire, the antistatic performance of the fiber is improved, and the core layer fiber is the PET fiber with the in-situ polymerization uvioresistant function, so that the mechanical property of the PET fiber is maintained, and the weaving performance is good.
(3) The invention provides a feasible solution aiming at the problem that the cost, the mechanical property and the thermal property of the antistatic uvioresistant fiber are difficult to unify, not only solves the problem of the antistatic uvioresistant of the synthetic fiber on the basis of not damaging the physical and chemical properties of the synthetic fiber, but also keeps the good weaving property through the mechanical property of the core layer fiber, and the nano material in the antistatic fiber of the skin layer can absorb and reflect ultraviolet rays and form synergistic effect with the uvioresistant functional auxiliary agent of the core layer. The added value of the fiber and the fabric is increased, and the application field of the fiber and the fabric in the textile range is expanded.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, specific embodiments thereof are described in detail below with reference to examples of the specification.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Preparing a PBT functional slice by carrying out double-screw melt co-extrusion on conductive functional powder with the particle size of 80nm and PBT polyester according to the mass ratio of 2%, wherein the double-screw processing temperature is 255 ℃, and the screw rotating speed is 300 r/min;
compounding UV1020 ultraviolet-resistant weather-resistant auxiliary agent and dibutyltin according to the proportion of 10:1, dissolving the mixture in ethylene glycol to prepare the ultraviolet-resistant auxiliary agent, and carrying out in-situ polymerization and grain cutting on the ultraviolet-resistant auxiliary agent and PET polyester according to the mass ratio of 0.2% to prepare PET functional slices, wherein the polymerization temperature is 282 ℃;
and (2) taking the PBT functional slice as a skin layer, taking the PET functional slice as a core layer, and respectively adding the skin layer and the core layer into a double-screw composite spinning machine according to the mass ratio of 1:5, wherein the screw temperature of the PET functional slice is 283 ℃, the screw temperature of the PBT functional slice is 255 ℃, and the spinning speed is 2000m/min, so as to prepare the skin-core type two-component antistatic ultraviolet resistant fiber.
The antistatic and UV resistant properties of the fibers were tested and the results are shown in Table 1.
TABLE 1
The mechanical properties of the fiber are tested, the strength is 3.42cn/dtex, the elongation at break is 24 percent, the requirements of various weaving modes are met, the diameter of a single fiber is 2D (7 micrometers), and various fabrics for clothes, home textiles and the like can be developed.
Example 2
Preparing a PBT functional slice by carrying out double-screw melt co-extrusion on conductive functional powder with the particle size of 80nm and PBT polyester according to the mass ratio of 4%, wherein the double-screw processing temperature is 255 ℃, and the screw rotating speed is 300 r/min;
compounding UV1020 ultraviolet-resistant weather-resistant auxiliary agent and dibutyltin according to the proportion of 10:1, dissolving the mixture in ethylene glycol to prepare the ultraviolet-resistant auxiliary agent, and carrying out in-situ polymerization and grain cutting on the ultraviolet-resistant auxiliary agent and PET polyester according to the mass ratio of 0.2% to prepare PET functional slices, wherein the polymerization temperature is 282 ℃;
and (2) taking the PBT functional slice as a skin layer, taking the PET functional slice as a core layer, and respectively adding the skin layer and the core layer into a double-screw composite spinning machine according to the mass ratio of 1:5, wherein the screw temperature of the PET functional slice is 283 ℃, the screw temperature of the PBT functional slice is 255 ℃, and the spinning speed is 2000m/min, so as to prepare the skin-core type two-component antistatic ultraviolet resistant fiber.
The antistatic and UV resistant properties of the fibers were tested and the results are shown in Table 2.
TABLE 2
The mechanical properties of the fiber are tested, the strength is 3.29cn/dtex, the elongation at break is 24 percent, the requirements of various weaving modes are met, the diameter of a single fiber is 2D (7 micrometers), and various fabrics for clothes, home textiles and the like can be developed.
Example 3
Preparing a PBT functional slice by carrying out double-screw melt co-extrusion on conductive functional powder with the particle size of 80nm and PBT polyester according to the mass ratio of 6%, wherein the double-screw processing temperature is 255 ℃, and the screw rotating speed is 300 r/min;
compounding UV1020 ultraviolet-resistant weather-resistant auxiliary agent and dibutyltin according to the proportion of 10:1, dissolving the mixture in ethylene glycol to prepare the ultraviolet-resistant auxiliary agent, and carrying out in-situ polymerization and grain cutting on the ultraviolet-resistant auxiliary agent and PET polyester according to the mass ratio of 0.2% to prepare PET functional slices, wherein the polymerization temperature is 282 ℃;
and (2) taking the PBT functional slice as a skin layer, taking the PET functional slice as a core layer, and respectively adding the skin layer and the core layer into a double-screw composite spinning machine according to the mass ratio of 1:5, wherein the screw temperature of the PET functional slice is 283 ℃, the screw temperature of the PBT functional slice is 255 ℃, and the spinning speed is 2000m/min, so as to prepare the skin-core type two-component antistatic ultraviolet resistant fiber.
The antistatic and UV resistant properties of the fibers were tested and the results are shown in Table 3.
TABLE 3
The mechanical properties of the fiber are tested, the strength is 3.18cn/dtex, the elongation at break is 23 percent, the requirements of various weaving modes are met, the diameter of a single fiber is 2D (7 micrometers), and various fabrics for clothes, home textiles and the like can be developed.
Example 4
Carrying out double-screw melt co-extrusion on conductive functional powder with the particle size of 80nm and PBT polyester by the mass ratio of 8% to prepare a PBT functional slice, wherein the double-screw processing temperature is 255 ℃, and the screw rotating speed is 300 r/min;
compounding UV1020 ultraviolet-resistant weather-resistant auxiliary agent and dibutyltin according to the proportion of 10:1, dissolving the mixture in ethylene glycol to prepare the ultraviolet-resistant auxiliary agent, and carrying out in-situ polymerization and grain cutting on the ultraviolet-resistant auxiliary agent and PET polyester according to the mass ratio of 0.2% to prepare PET functional slices, wherein the polymerization temperature is 282 ℃;
and (2) taking the PBT functional slice as a skin layer, taking the PET functional slice as a core layer, and respectively adding the skin layer and the core layer into a double-screw composite spinning machine according to the mass ratio of 1:5, wherein the screw temperature of the PET functional slice is 283 ℃, the screw temperature of the PBT functional slice is 255 ℃, and the spinning speed is 2000m/min, so as to prepare the skin-core type two-component antistatic ultraviolet resistant fiber.
The antistatic and UV resistant properties of the fibers were tested and the results are shown in Table 4.
TABLE 4
The mechanical properties of the fibers are tested, the strength is 2.98cn/dtex, the elongation at break is 16 percent, the diameter of a single fiber is 2D (7 micrometers), and the mechanical properties are too poor to meet the weaving requirements.
Example 5
Preparing a PBT functional slice by carrying out double-screw melt co-extrusion on conductive functional powder with the particle size of 80nm and PBT polyester according to the mass ratio of 6%, wherein the double-screw processing temperature is 255 ℃, and the screw rotating speed is 300 r/min;
compounding UV1020 ultraviolet-resistant weather-resistant auxiliary agent and dibutyltin according to the proportion of 10:1, dissolving the mixture in ethylene glycol to prepare the ultraviolet-resistant auxiliary agent, and carrying out in-situ polymerization and grain cutting on the ultraviolet-resistant auxiliary agent and PET polyester according to the mass ratio of 0.8% to prepare PET functional slices, wherein the polymerization temperature is 282 ℃;
and (2) taking the PBT functional slice as a skin layer, taking the PET functional slice as a core layer, and respectively adding the skin layer and the core layer into a double-screw composite spinning machine according to the mass ratio of 1:5, wherein the screw temperature of the PET functional slice is 283 ℃, the screw temperature of the PBT functional slice is 255 ℃, and the spinning speed is 2000m/min, so as to prepare the skin-core type two-component antistatic ultraviolet resistant fiber.
The antistatic and UV resistance properties of the fibers were tested and the results are shown in Table 5.
TABLE 5
The mechanical properties of the fiber are tested, the strength is 3.18cn/dtex, the elongation at break is 23 percent, the requirements of various weaving modes are met, the diameter of a single fiber is 2D (7 micrometers), and various fabrics for clothes, home textiles and the like can be developed.
Example 6
Preparing a PBT functional slice by carrying out double-screw melt co-extrusion on conductive functional powder with the particle size of 80nm and PBT polyester according to the mass ratio of 6%, wherein the double-screw processing temperature is 255 ℃, and the screw rotating speed is 300 r/min;
compounding UV1020 ultraviolet-resistant weather-resistant auxiliary agent and dibutyltin according to the proportion of 10:1, dissolving the mixture in ethylene glycol to prepare the ultraviolet-resistant auxiliary agent, and carrying out in-situ polymerization and grain cutting on the 2 mass percent of the ultraviolet-resistant auxiliary agent and PET polyester to prepare PET functional slices, wherein the polymerization temperature is 282 ℃;
and (2) taking the PBT functional slice as a skin layer, taking the PET functional slice as a core layer, and respectively adding the skin layer and the core layer into a double-screw composite spinning machine according to the mass ratio of 1:5, wherein the screw temperature of the PET functional slice is 283 ℃, the screw temperature of the PBT functional slice is 255 ℃, and the spinning speed is 2000m/min, so as to prepare the skin-core type two-component antistatic ultraviolet resistant fiber.
The antistatic and UV resistant properties of the fibers were tested and the results are shown in Table 6.
TABLE 6
The mechanical properties of the fiber are tested, the strength is 3.18cn/dtex, the elongation at break is 23 percent, the requirements of various weaving modes are met, the diameter of a single fiber is 2D (7 micrometers), and various fabrics for clothes, home textiles and the like can be developed.
Example 7
Preparing a PBT functional slice by carrying out double-screw melt co-extrusion on conductive functional powder with the particle size of 80nm and PBT polyester according to the mass ratio of 6%, wherein the double-screw processing temperature is 255 ℃, and the screw rotating speed is 300 r/min;
compounding UV1020 ultraviolet-resistant weather-resistant auxiliary agent and dibutyltin according to the proportion of 10:1, dissolving the mixture in ethylene glycol to prepare the ultraviolet-resistant auxiliary agent, and carrying out in-situ polymerization and grain cutting on the 3 mass percent of the ultraviolet-resistant auxiliary agent and PET polyester to prepare PET functional slices, wherein the polymerization temperature is 282 ℃;
and (2) taking the PBT functional slice as a skin layer, taking the PET functional slice as a core layer, and respectively adding the skin layer and the core layer into a double-screw composite spinning machine according to the mass ratio of 1:5, wherein the screw temperature of the PET functional slice is 283 ℃, the screw temperature of the PBT functional slice is 255 ℃, and the spinning speed is 2000m/min, so as to prepare the skin-core type two-component antistatic ultraviolet resistant fiber.
The antistatic and UV resistance properties of the fibers were tested and the results are shown in Table 7.
TABLE 7
The mechanical properties of the fiber are tested, the strength is 2.78cn/dtex, the elongation at break is 18%, the diameter of a single fiber is 2D (7 micrometers), and the mechanical properties are poor, so that the addition amount of the ultraviolet resistance auxiliary agent is preferably 2%.
Example 8
Preparing a PBT functional slice by carrying out double-screw melt co-extrusion on conductive functional powder with the particle size of 80nm and PBT polyester according to the mass ratio of 6%, wherein the double-screw processing temperature is 255 ℃, and the screw rotating speed is 300 r/min;
compounding UV1020 ultraviolet-resistant weather-resistant auxiliary agent and dibutyltin according to the proportion of 10:1, dissolving the mixture in ethylene glycol to prepare the ultraviolet-resistant auxiliary agent, and carrying out in-situ polymerization and grain cutting on the 2 mass percent of the ultraviolet-resistant auxiliary agent and PET polyester to prepare PET functional slices, wherein the polymerization temperature is 282 ℃;
and (2) taking the PBT functional slice as a skin layer, taking the PET functional slice as a core layer, and respectively adding the skin layer and the core layer into a double-screw composite spinning machine according to the mass ratio of 1:3, wherein the screw temperature of the PET functional slice is 283 ℃, the screw temperature of the PBT functional slice is 255 ℃, and the spinning speed is 2000m/min, so as to prepare the skin-core type two-component antistatic ultraviolet resistant fiber.
The antistatic and UV resistant properties of the fibers were tested and the results are shown in Table 8.
TABLE 8
The mechanical properties of the fiber are tested, the strength is 3.18cn/dtex, the elongation at break is 23 percent, the requirements of various weaving modes are met, the diameter of a single fiber is 2D (7 micrometers), and various fabrics for clothes, home textiles and the like can be developed.
Example 9
Preparing a PBT functional slice by carrying out double-screw melt co-extrusion on conductive functional powder with the particle size of 80nm and PBT polyester according to the mass ratio of 6%, wherein the double-screw processing temperature is 255 ℃, and the screw rotating speed is 300 r/min;
compounding UV1020 ultraviolet-resistant weather-resistant auxiliary agent and dibutyltin according to the proportion of 10:1, dissolving the mixture in ethylene glycol to prepare the ultraviolet-resistant auxiliary agent, and carrying out in-situ polymerization and grain cutting on the 2 mass percent of the ultraviolet-resistant auxiliary agent and PET polyester to prepare PET functional slices, wherein the polymerization temperature is 282 ℃;
taking the PBT functional slice as a skin layer, taking the PET functional slice as a core layer, and respectively adding the skin layer and the core layer into a double-screw composite spinning machine according to the mass ratio of 1:2, wherein the screw temperature of the PET functional slice is 283 ℃, the screw temperature of the PBT functional slice is 255 ℃, and the spinning speed is 2000m/min, so as to prepare the skin-core type two-component antistatic uvioresistant fiber.
The antistatic and UV resistant properties of the fibers were tested and the results are shown in Table 9.
TABLE 9
The mechanical properties of the fiber are tested, the strength is 3.18cn/dtex, the elongation at break is 23 percent, the requirements of various weaving modes are met, the diameter of a single fiber is 2D (7 micrometers), and various fabrics for clothes, home textiles and the like can be developed.
Example 10
Preparing a PBT functional slice by carrying out double-screw melt co-extrusion on conductive functional powder with the particle size of 80nm and PBT polyester according to the mass ratio of 6%, wherein the double-screw processing temperature is 255 ℃, and the screw rotating speed is 300 r/min;
compounding UV1020 ultraviolet-resistant weather-resistant auxiliary agent and dibutyltin according to the proportion of 10:1, dissolving the mixture in ethylene glycol to prepare the ultraviolet-resistant auxiliary agent, and carrying out in-situ polymerization and grain cutting on the 2 mass percent of the ultraviolet-resistant auxiliary agent and PET polyester to prepare PET functional slices, wherein the polymerization temperature is 282 ℃;
taking the PBT functional slice as a skin layer, taking the PET functional slice as a core layer, and respectively adding the skin layer and the core layer into a double-screw composite spinning machine according to the mass ratio of 1:1, wherein the screw temperature of the PET functional slice is 283 ℃, the screw temperature of the PBT functional slice is 255 ℃, and the spinning speed is 2000m/min, so as to prepare the skin-core type two-component antistatic uvioresistant fiber.
The antistatic and UV resistant properties of the fibers were tested and the results are shown in Table 10.
Watch 10
The mechanical properties of the fiber are tested, the strength is 3.18cn/dtex, the elongation at break is 23 percent, the requirements of various weaving modes are met, the diameter of a single fiber is 2D (7 micrometers), and various fabrics for clothes, home textiles and the like can be developed. However, the antistatic function is not obviously increased relatively, and the ultraviolet resistance is obviously reduced, so that the effect is optimal when the ratio of PET/PBT is determined to be 2: 1.
The invention adopts the skin-core structure bicomponent fiber to prepare the new antistatic uvioresistant fiber, the fiber diameter can be ultrafine fiber, the fiber can be made into light color, the permanent antistatic uvioresistant function, the mechanical property can reach the standard of common fiber, the requirements of various weaving can be completely met, the cost is equivalent to the antistatic uvioresistant after finishing, the pollution and the raw material cost are reduced, therefore, the invention can enlarge the export of textiles and improve the added value of the textiles.
The composite fiber has the functions of resisting static electricity and resisting ultraviolet, and because the antistatic layers of the skin layers of the composite fiber are uniformly distributed, the antistatic function of the fiber is equal to that of a conductive wire, the antistatic performance of the fiber is improved, and the core layer fiber is the PET fiber with the in-situ polymerization uvioresistant function, so that the mechanical property of the PET fiber is maintained, and the weaving performance is good.
The invention provides a feasible solution aiming at the problem that the cost, the mechanical property and the thermal property of the antistatic uvioresistant fiber are difficult to unify, not only solves the problem of the antistatic uvioresistant of the synthetic fiber on the basis of not damaging the physical and chemical properties of the synthetic fiber, but also keeps the good weaving property through the mechanical property of the core layer fiber, and the nano material in the antistatic fiber of the skin layer can absorb and reflect ultraviolet rays and form synergistic effect with the uvioresistant functional auxiliary agent of the core layer. The added value of the fiber and the fabric is increased, and the application field of the fiber and the fabric in the textile range is expanded.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an antistatic anti ultraviolet fibre of sheath-core type two ingredients which characterized in that: the PET-based high-temperature-resistant composite material comprises a skin layer and a core layer, wherein the skin layer is a PBT polymer, the core layer is a PET polymer, and the mass ratio of the skin layer to the core layer is 1: 1-5;
wherein the PBT polymer is a polymer of PBT polyester and conductive functional powder; the PET polymer is a polymer of PET polyester and an anti-ultraviolet auxiliary agent.
2. The sheath-core bicomponent antistatic ultraviolet fiber as claimed in claim 1, wherein: the conductive functional powder exists in the PBT polymer in a mass ratio of 2-8%.
3. The sheath-core bicomponent antistatic ultraviolet fiber as claimed in claim 2, wherein: the conductive functional powder is one of nitrogen-doped titanium dioxide, titanium dioxide deposited conductive zinc oxide, titanium dioxide deposited conductive tin oxide, conductive carbon black and conductive graphene.
4. The sheath-core bicomponent antistatic ultraviolet fiber as claimed in any one of claims 1 to 3, wherein: the anti-ultraviolet auxiliary agent is present in the PET polymer in an amount of 0.2-2% by mass.
5. The sheath-core bicomponent antistatic ultraviolet fiber as claimed in claim 4, wherein: the anti-ultraviolet auxiliary agent is prepared from UV1020 anti-ultraviolet weather-resistant auxiliary agent, dibutyltin and ethylene glycol.
6. A method for preparing the skin-core type two-component anti-static ultraviolet resistant fiber as claimed in any one of claims 1 to 5, which is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
carrying out double-screw melt co-extrusion on the conductive functional powder and PBT polyester to prepare a PBT functional slice, wherein the double-screw processing temperature is 225-270 ℃, and the screw rotating speed is 100-500 r/min;
preparing a PET functional slice by in-situ polymerization and grain cutting of the anti-ultraviolet additive and PET polyester, wherein the polymerization temperature is 270-290 ℃;
the sheath-core type two-component anti-static anti-ultraviolet fiber is prepared by taking a PBT functional slice as a sheath layer and a PET functional slice as a core layer, and respectively adding the sheath layer and the core layer into a double-screw composite spinning machine according to the mass ratio of 1: 1-5.
7. The method for preparing the sheath-core bicomponent anti-static ultraviolet resistance fiber as claimed in claim 6, which is characterized in that: according to the preparation of the PBT functional slice, the conductive functional powder is blended with the PBT polyester in a mass ratio of 2-8%, wherein the particle size of the conductive functional powder is 20-100 nm.
8. The method for preparing the sheath-core bicomponent anti-static ultraviolet resistant fiber according to claim 6 or 7, which is characterized in that: according to the preparation of the PET functional slice, the anti-ultraviolet auxiliary agent is polymerized with PET polyester in a mass ratio of 0.2-2%.
9. The method for preparing the sheath-core bicomponent anti-static ultraviolet resistance fiber as claimed in claim 8, wherein the method comprises the following steps: the preparation method of the anti-ultraviolet auxiliary agent comprises the step of dissolving the UV1020 anti-ultraviolet weather-resistant auxiliary agent and dibutyltin in ethylene glycol according to a proportion.
10. A method for preparing a sheath-core bicomponent anti-static ultraviolet resistant fiber as claimed in any one of claims 6, 7 or 9, characterized in that: the double-screw composite spinning machine has the screw temperature of 270-300 ℃ for PET functional chips, the screw temperature of 240-270 ℃ for PBT functional chips and the spinning speed of 600-2600 m/min.
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