CN115124831B - Cool nylon blend and application thereof - Google Patents
Cool nylon blend and application thereof Download PDFInfo
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- CN115124831B CN115124831B CN202210868435.2A CN202210868435A CN115124831B CN 115124831 B CN115124831 B CN 115124831B CN 202210868435 A CN202210868435 A CN 202210868435A CN 115124831 B CN115124831 B CN 115124831B
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- 229920001778 nylon Polymers 0.000 title claims abstract description 81
- 239000004677 Nylon Substances 0.000 title claims abstract description 37
- 239000000203 mixture Substances 0.000 title claims abstract description 32
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims abstract description 57
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052582 BN Inorganic materials 0.000 claims abstract description 53
- 239000002131 composite material Substances 0.000 claims abstract description 39
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 35
- 239000011347 resin Substances 0.000 claims abstract description 27
- 229920005989 resin Polymers 0.000 claims abstract description 27
- 238000009987 spinning Methods 0.000 claims abstract description 23
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 7
- 239000004952 Polyamide Substances 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 15
- 238000010521 absorption reaction Methods 0.000 abstract description 12
- 210000004243 sweat Anatomy 0.000 abstract description 11
- 239000000945 filler Substances 0.000 abstract description 9
- 239000006185 dispersion Substances 0.000 abstract description 7
- 238000002360 preparation method Methods 0.000 abstract description 5
- 238000001125 extrusion Methods 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 15
- 239000011159 matrix material Substances 0.000 description 14
- 239000000654 additive Substances 0.000 description 9
- 238000007664 blowing Methods 0.000 description 8
- 239000004744 fabric Substances 0.000 description 7
- 238000004804 winding Methods 0.000 description 7
- 230000000996 additive effect Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- -1 aluminum nitride compound Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
-
- 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
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- 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
-
- 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
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/90—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/28—Nitrogen-containing compounds
- C08K2003/282—Binary compounds of nitrogen with aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/12—Applications used for fibers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Medicinal Chemistry (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Artificial Filaments (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention provides a cool nylon blend and application thereof, wherein the cool nylon blend utilizes granular aluminum nitride and flaky boron nitride to form a filler network structure, so that the heat conducting property of a composite cool master batch is improved, a good continuous cool effect can be obtained when the content of the cool nylon blend is low, and good spinnability of the blend is ensured; meanwhile, aluminum nitride and boron nitride have the mutual promotion and dispersion effects, so that the uniform dispersion of the composite cool master batch in nylon resin can be effectively improved, and the stability of the blend is improved. The special-shaped cool nylon fiber prepared by the combined spinning has excellent cool effect, and the cool value can reach 0.35J/(cm) 2 S) above 50% of industry standard; meanwhile, the nylon fiber has large specific surface area, is fluffy and breathable between fibers, and has good moisture absorption and sweat release effects. And the preparation method of the nylon fiber is simple and the production process is controllable.
Description
Technical Field
The invention belongs to the technical field of functional fibers, and particularly relates to a cool nylon blend and application thereof.
Background
The development of cool nylon fiber can meet the demands of people on summer clothing, and the woven fabric can quickly conduct sweat and heat of a human body, so that the comfort level of a wearer in a sultry environment or in a large amount of sports sweating is improved. The cool feeling fiber prepared by mixing and spinning the substance with the cool effect with the polyamide slice has better washing fastness. Common cool feeling additives comprise jade, mica, silicon carbide and the like, the prepared cool feeling fibers have poor continuous cool feeling effect due to lower heat conductivity, and the cool feeling fibers have poor spinnability and uneven performance due to larger addition amount. The special-shaped fiber structure is designed, so that the moisture-conducting effect of the cool feeling fiber can be further improved, and the composite functions of cool feeling, moisture absorption and sweat release are achieved. However, due to the large addition amount of cool filler, it is difficult to spin and prepare profiled fibers with complex cross-sectional shapes.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the cool nylon blend, which takes aluminum nitride/boron nitride composite cool master batch as cool filler, and the special cool nylon fiber prepared by the cool nylon blend has excellent cool and moisture absorption and sweat release functions and good spinnability.
The invention also provides the special-shaped cool nylon fiber prepared from the cool nylon blend and a preparation method thereof.
A cool nylon blend comprises nylon resin and aluminum nitride/boron nitride composite cool master batch.
According to the technical scheme, the granular aluminum nitride and the lamellar boron nitride can form a filler network structure, so that the heat conduction performance of the composite filler (composite cool feeling master batch) is improved, and therefore, a good continuous cool feeling effect can be obtained when the content of the composite filler is low, meanwhile, the granular aluminum nitride and the lamellar boron nitride have a mutual promotion dispersion effect, so that the uniform dispersion of the composite filler in nylon resin is promoted, the special-shaped fiber with a complicated flat groove section shape has good spinnability, and the special-shaped cool feeling nylon fiber with excellent cool feeling and moisture absorption and sweat releasing functions is obtained.
Preferably, in the cool nylon blend, the total addition amount of aluminum nitride and boron nitride is 1 to 5wt%. Further preferably 1.5 to 3wt%.
Preferably, in the aluminum nitride/boron nitride composite cool master batch, the mass ratio of boron nitride to aluminum nitride is (1-5): 1. further preferably (1.5 to 3.5): 1.
preferably, the aluminum nitride/boron nitride composite cool master batch comprises the following raw materials in percentage by weight:
preferably, the nylon resin is one or more of PA6, PA56 and PA 66. Further preferred is PA6.
The special cool nylon fiber is obtained by melt blending and spinning the cool nylon blend.
Preferably, the cross section of the nylon fiber is a flat structure with grooves.
As a further preferred aspect, the nylon fiber cross section is composed of two multi-semicircular structures at both ends, at least one in-line flat structure located between and connected to the two multi-semicircular structures. The cross section of the nylon fiber is of a symmetrical structure in both the length direction and the width direction.
When the flat structure is one, the groove is defined by two more semicircular structures and the flat structure.
When the number of the straight flat structures is multiple, two sides between two adjacent straight flat structures are respectively connected through the raised arc structures, and the straight flat structures between the two arc structures or the straight flat structures between the two arc structures and the multiple semicircle structures define a groove together.
The nylon fiber is designed into a flat structure with the cross section provided with the grooves, so that the specific surface area of the nylon fiber can be increased, the feasibility of groove processing can be improved, and the stability of the special-shaped structure can be improved.
Further preferably, the polyamide fiber has a flatness (aspect ratio) of (3 to 5): 1.
the preparation method of the special-shaped cool polyamide fiber according to any one of the above steps, comprising the following steps:
and (3) melting and blending nylon resin and aluminum nitride/boron nitride composite cool feeling master batch, and spinning through a flat groove spinneret orifice to obtain the special cool feeling nylon fiber with the cross section of the flat groove.
Wherein, the spinning condition is: the extrusion temperature is 230-260 ℃; the extrusion pressure is 8-15 MPa; the pressure of the assembly is 12-18 MPa; the side blowing wind speed is 0.3-0.5 m/s.
The aluminum nitride/boron nitride composite cool master batch can be prepared by mechanical blending.
Preferably, the spinneret orifices are in a grooved flat structure.
Further preferably, the spinneret orifice is composed of two multi-semicircular structures at both ends, and at least one in-line flat structure located between and connected to the two multi-semicircular structures. The spinneret orifices are symmetrical in both the length direction and the width direction.
When the flat structure is one, the groove is defined by two more semicircular structures and the flat structure.
When the number of the straight flat structures is multiple, two sides between two adjacent straight flat structures are respectively connected through the raised arc structures, and the straight flat structures between the two arc structures or the straight flat structures between the two arc structures and the multiple semicircle structures define a groove together.
According to the cool nylon blend, by utilizing the synergistic effect of aluminum nitride and boron nitride, even if the aluminum nitride/boron nitride composite cool master batch is added in a small amount, a good continuous cool effect can be obtained, and meanwhile, the blend is guaranteed to have good spinnability. After the blend is melt blended, spinning is carried out through a flat groove spinneret orifice to obtain the special-shaped cool nylon fiber with a flat groove structure, the addition of the aluminum nitride/boron nitride composite cool master batch has good continuous cool feel, and meanwhile, the design of the flat groove structure enables the nylon fiber to have excellent moisture absorption and sweat release functions. According to the invention, aluminum nitride and boron nitride are added into the nylon fiber material at the same time, so that the aluminum nitride and boron nitride form a synergistic dispersion promoting and filler network structure, and the contact cool feeling performance can be remarkably improved; under the same cooling performance requirement, the addition amount of the cooling additive can be reduced, the spinnability of the fiber with the complicated special-shaped cross section is improved, and the special-shaped cooling nylon fiber has a complicated groove structure and a high specific surface area, so that the fiber has high contact cooling performance and moisture absorption and sweat release performance.
Compared with the prior art, the invention has the beneficial effects that:
according to the cool nylon blend, the granular aluminum nitride and the flaky boron nitride are utilized to form a filler network structure, so that the heat conducting property of the composite cool master batch is improved, a good continuous cool effect can be obtained when the content of the composite cool master batch is low, and good spinnability of the blend is ensured; meanwhile, aluminum nitride and boron nitride have the mutual promotion and dispersion effects, so that the uniform dispersion of the composite cool master batch in nylon resin can be effectively improved, and the stability of the blend is improved. The special-shaped cool nylon fiber prepared by the blend spinning has excellent cool effect, and the cool value can reach 0.35J/(cm) 2 S) above 50% of industry standard; meanwhile, the nylon fiber has large specific surface area, is fluffy and breathable between fibers, and has good moisture absorption and sweat release effects. And the preparation method of the nylon fiber is simple and the production process is controllable.
Drawings
FIG. 1 is a schematic diagram of a spinneret hole according to embodiment 1 of the present invention, wherein 1 is a multi-semicircle structure, 2 is a flat structure, and 3 is an arc structure;
FIG. 2 is a cross-sectional view of the shaped cool polyamide fiber prepared in example 1 of the present invention;
FIG. 3 is a flow chart of the preparation process of the special-shaped cool polyamide fiber in the embodiment 1 of the invention.
Detailed Description
The invention will be further illustrated with reference to specific examples.
In the following examples and comparative examples, the total weight of the matrix nylon resin (PA 6) and the aluminum nitride/boron nitride composite cool feeling master batch (the combination of the two is cool feeling nylon blend) was 20 kg;
in examples 1 to 3 and comparative example 4, the PA6 resin was 70% by weight, the total content of aluminum nitride and boron nitride was 25% and the dispersant content was 5% in the aluminum nitride/boron nitride composite cool master batch. And mechanically blending the PA6 resin, aluminum nitride, boron nitride and a dispersing agent to obtain the aluminum nitride/boron nitride composite cool master batch.
The spinning processes of the nylon fibers in examples 2 to 3 and comparative examples 1 to 4 are the same as those in example 1; examples 2 to 3, and comparative examples 1 to 3 were each identical in structure to example 1 in the spinneret orifices for spinning nylon fibers.
Example 1
Taking PA6 as matrix resin, wherein the ratio of aluminum nitride to boron nitride in the aluminum nitride/boron nitride composite cool master batch is 1.5:1. The total content of aluminum nitride and boron nitride in the cool feeling nylon blend consisting of the matrix nylon resin and the aluminum nitride/boron nitride composite cool feeling master batch is 3.0 weight percent.
According to the process flow shown in figure 3, PA6 and the composite cool feeling master batch are subjected to melt blending spinning, spinning conditions are set, the extrusion temperature is 258 ℃, the extrusion pressure is 11Mpa, the assembly pressure is 15Mpa, the side blowing wind speed is 0.4m/s, and the special-shaped cool feeling nylon fiber is prepared through oiling, hot stretching and winding. (breaking Strength 4.51cN/dtex, elongation at break 43%)
The structure of the spinneret hole is shown in fig. 1, and is a grooved flat structure (the flatness is 4:1), and the spinneret hole is composed of two multi-semicircle 1, two flat structures 2 and two arc structures 3 at two ends, wherein one end of each flat structure 2 opposite to the other end is respectively connected with one multi-semicircle 1, two opposite ends of each flat structure 2 are respectively connected with one arc structure 3, and a cross symmetrical structure (namely, symmetrical structures in the length direction and the width direction) is formed.
The cross section of the special-shaped cool nylon fiber prepared through the process is shown in fig. 2, the structure is basically identical with the structure of the spinneret orifices in fig. 1, two grooves are respectively formed on two sides of the flat structure, and the spinnability of the blend in the embodiment is directly verified.
Example 2
Taking PA6 as matrix resin, wherein the ratio of aluminum nitride to boron nitride in the aluminum nitride/boron nitride composite cool master batch is 2.5:1. The total content of aluminum nitride and boron nitride in the cool feeling nylon blend consisting of the matrix nylon resin and the aluminum nitride/boron nitride composite cool feeling master batch is 2.5 weight percent.
And (3) carrying out melt blending spinning on the PA6 and the composite cool sense master batch, setting spinning conditions, wherein the extrusion temperature is 258 ℃, the extrusion pressure is 11Mpa, the assembly pressure is 15Mpa, the side blowing wind speed is 0.4m/s, and oiling, hot stretching and winding to obtain the special cool sense nylon fiber. (breaking Strength 4.49cN/dtex, elongation at break 45%)
Example 3
Taking PA6 as matrix resin, wherein the ratio of aluminum nitride to boron nitride in the aluminum nitride/boron nitride composite cool master batch is 3.5:1. The total content of aluminum nitride and boron nitride in the cool feeling nylon blend consisting of the matrix nylon resin and the aluminum nitride/boron nitride composite cool feeling master batch is 1.5 weight percent.
And (3) carrying out melt blending spinning on the PA6 and the composite cool sense master batch, setting spinning conditions, wherein the extrusion temperature is 258 ℃, the extrusion pressure is 11Mpa, the assembly pressure is 15Mpa, the side blowing wind speed is 0.4m/s, and oiling, hot stretching and winding to obtain the special cool sense nylon fiber. (breaking Strength 4.55cN/dtex, elongation at break 46%)
Comparative example 1
PA6 is taken as matrix resin, and no cool feeling additive is added.
The PA6 resin was melt spun. The spinning conditions are set, the extrusion temperature is 258 ℃, the extrusion pressure is 11Mpa, the assembly pressure is 15Mpa, the side blowing wind speed is 0.4m/s, and the special-shaped nylon fiber is prepared through oiling, hot stretching and winding. (breaking Strength 4.45cN/dtex, elongation at break 45%)
Comparative example 2
PA6 is taken as matrix resin, and aluminum nitride is taken as cool sense additive. The content of aluminum nitride in the mixture of the matrix resin and aluminum nitride was 3.0wt%.
PA6 and aluminum nitride are melt blended and spun. The spinning conditions are set, the extrusion temperature is 258 ℃, the extrusion pressure is 11Mpa, the assembly pressure is 15Mpa, the side blowing wind speed is 0.4m/s, and the special-shaped cool nylon fiber is prepared through oiling, hot stretching and winding. (breaking Strength 4.15cN/dtex, elongation at break 43%)
Comparative example 3
PA6 is taken as matrix resin, and boron nitride is taken as cool sense additive. The content of boron nitride in the mixture of the matrix resin and aluminum nitride was 3.0wt%.
PA6 and aluminum nitride are subjected to melt blending spinning, spinning conditions are set, the extrusion temperature is 258 ℃, the extrusion pressure is 11Mpa, the assembly pressure is 15Mpa, the side blowing wind speed is 0.4m/s, and the special-shaped cool nylon fiber is prepared through oiling, hot stretching and winding. (breaking Strength 4.27cN/dtex, elongation at break 45%)
Comparative example 4
Taking PA6 as matrix resin, wherein the ratio of aluminum nitride to boron nitride in the aluminum nitride/boron nitride composite cool master batch is 1.5:1. The total content of aluminum nitride and boron nitride in the cool feeling nylon blend consisting of the matrix nylon resin and the aluminum nitride/boron nitride composite cool feeling master batch is 3.0 weight percent.
And (3) carrying out melt blending spinning on the PA6 and the composite cool sense master batch, setting spinning conditions, wherein the extrusion temperature is 258 ℃, the extrusion pressure is 11Mpa, the assembly pressure is 15Mpa, the side blowing wind speed is 0.4m/s, and oiling, hot stretching and winding to obtain the cool sense nylon fiber with the circular cross section. (breaking Strength 4.59cN/dtex, elongation at break 43%)
Wherein, the spinneret orifice is of a circular structure.
The PA6 cool feeling fibers prepared in examples 1-3 and comparative examples 1-4 were woven into fabrics, the cool feeling performance of the fabrics was tested according to GB/T35263-2017 detection and evaluation of the contact instant cool feeling performance of textiles, the moisture conductivity of the fabrics was tested according to GB/T21655.1-2008 first part single combination test method for evaluating the moisture absorption and quick drying performance of textiles, and the test results are shown in Table 1:
TABLE 1 results of Performance test of different cool feeling fibers
As can be seen from Table 1, the special-shaped cool feeling nylon fiber woven fabric prepared in examples 1-3 has a high contact cool feeling coefficient and excellent moisture absorption and quick drying properties.
Compared with the example 1, the nylon fiber prepared by directly melt spinning PA6 in the comparative example 1 has a cross section of a special-shaped flat groove, and the contact cool feeling coefficient of the fabric is low because no cool feeling additive is added; in comparative examples 2 and 3, only aluminum nitride and boron nitride were added as cooling additives, respectively, and the dispersibility of the additives was poor and a network structure was difficult to form because the additives were not used in combination, so that the contact cooling coefficient was also relatively low.
Comparative example 4 is a conventional circular-section cool feeling fiber, and although a compounding technology of aluminum nitride and boron nitride (same as that of example 1) is adopted, the contact cool feeling coefficient is high, and the specific surface area of the circular-section fiber is small, the fabric bulk is low, and a groove structure capable of absorbing moisture and discharging sweat is not provided, so that the moisture absorption and quick drying performance is poor.
From the breaking strength and breaking elongation of the nylon fibers prepared in examples 1 to 3 and comparative example 1, it is understood that the mechanical properties of the nylon fibers prepared in examples 1 to 3 are comparable to those of the nylon fibers prepared in comparative example 1, and even better than those of comparative example 1. The special-shaped cool sense nylon fiber prepared by adding the aluminum nitride/boron nitride composite cool sense master batch disclosed by the invention has the advantages that the contact cool sense coefficient and the moisture absorption and sweat release functions of the fabric are improved on the basis of ensuring the unchanged mechanical properties.
The experiment proves that the boron nitride and aluminum nitride compound addition has a contact cool feeling coefficient obviously superior to that of the single addition, and the combination of the flat special-shaped structure with the grooves ensures that the fabric woven by the special-shaped cool feeling nylon fiber has excellent cool feeling effect and moisture absorption and sweat release functions.
Claims (4)
1. The special-shaped cool nylon fiber is characterized in that the cross section of the nylon fiber is of a flat structure with grooves, and is obtained by melt blending and spinning of cool nylon blend;
the cool sense nylon blend comprises nylon resin and aluminum nitride/boron nitride composite cool sense master batch; in the cool nylon blend, the total addition amount of aluminum nitride and boron nitride is 1.5-3wt%;
in the aluminum nitride/boron nitride composite cool master batch, the mass ratio of boron nitride to aluminum nitride is (1.5-3.5): 1, a step of;
the aluminum nitride/boron nitride composite cool master batch comprises the following raw materials in percentage by weight:
40-70% nylon resin
10-25% of aluminum nitride
10 to 25 percent of boron nitride
5-20% of dispersing agent;
the aluminum nitride/boron nitride composite cool master batch is prepared by mechanical blending;
the flatness of the nylon fiber is (3-5): 1, a step of;
the nylon fiber cross section comprises two multi-semicircle structures positioned at two ends and at least one straight flat structure positioned between and connected with the two multi-semicircle structures.
2. The profiled cooling nylon fiber of claim 1 wherein the nylon resin is one or more of PA6, PA56, PA 66.
3. A method for preparing the special-shaped cool polyamide fiber according to any one of claims 1 to 2, which is characterized by comprising the following steps:
and (3) melting and blending nylon resin and aluminum nitride/boron nitride composite cool feeling master batch, and spinning through a flat groove spinneret orifice to obtain the special cool feeling nylon fiber.
4. A method of making as claimed in claim 3 wherein the orifices are grooved flat structures.
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| CN202210868435.2A CN115124831B (en) | 2022-07-22 | 2022-07-22 | Cool nylon blend and application thereof |
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| CN202210868435.2A CN115124831B (en) | 2022-07-22 | 2022-07-22 | Cool nylon blend and application thereof |
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| CN115124831B true CN115124831B (en) | 2024-02-02 |
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| CN117987956B (en) * | 2024-04-07 | 2024-05-28 | 汕头市雄威织造有限公司 | Cool and smooth fabric, preparation method thereof and application thereof in sportswear |
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