CN111455495A - Antibacterial nylon filament and production method thereof - Google Patents
Antibacterial nylon filament and production method thereof Download PDFInfo
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- CN111455495A CN111455495A CN202010320145.5A CN202010320145A CN111455495A CN 111455495 A CN111455495 A CN 111455495A CN 202010320145 A CN202010320145 A CN 202010320145A CN 111455495 A CN111455495 A CN 111455495A
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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
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide 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
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
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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
- D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
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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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Abstract
The invention discloses an antibacterial nylon filament, which comprises sheath fibers and core fibers, wherein the sheath fibers comprise the following materials in parts by weight: 40-60 parts by weight of polyamide resin; 10-20 parts of an antibacterial agent. According to the production method of the antibacterial nylon filament, disclosed by the invention, the composite filament comprises the skin layer fiber and the core layer fiber, and has excellent mechanical properties and strong antibacterial capability.
Description
Technical Field
The invention relates to a filament material, in particular to an antibacterial nylon filament and a production method thereof.
Background
Polyamide fiber is a generic name of polyamide fiber produced in China. Is internationally called nylon. High strength, high antiwear performance and high resilience, and may be used in spinning and blending to produce various kinds of clothing and knitwear. The main varieties are nylon 6 and nylon 66, and the physical properties of the nylon 6 and the nylon 66 are not much different. The moisture absorption and dyeing property of chinlon are better than those of terylene, and the chinlon is alkali-resistant but not acid-resistant, and the fiber strength of the chinlon can be reduced after long-term exposure to sunlight. Chinlon has heat setting property, and can keep the bending deformation formed during heating. The long filament of nylon can be made into stretch yarn, and the short filament can be blended with cotton and acrylic fibre to raise its strength and elasticity. The traditional nylon filament has single function and poor antibacterial performance.
Disclosure of Invention
Aiming at the defects, the invention aims to develop an antibacterial nylon filament and a production method thereof; it has excellent antibacterial property.
The technical scheme of the invention is summarized as follows:
the antibacterial nylon filament comprises 15-25% of sheath fiber and 85-75% of core fiber; the skin layer fiber comprises the following materials in parts by weight:
40-60 parts by weight of polyamide resin;
10-20 parts of an antibacterial agent.
Preferably, the antibacterial nylon filament comprises the following components in parts by weight:
preferably, the antibacterial nylon filament further comprises 0.5-1 part by weight of zinc oxide-loaded zirconium phosphate.
Preferably, the antibacterial nylon filament further comprises 0.5-2 parts by weight of aminoethylaminopropylmethyldiethoxysilane.
Preferably, the antibacterial nylon filament comprises the core layer fiber in parts by weight:
40-60 parts by weight of polyamide resin;
12-14 parts by weight of cellulose acetate;
3-5 parts of polylactic acid.
Preferably, the antibacterial nylon filament further comprises 2-4 parts by weight of 2-mercaptobenzothiazole.
A production method of antibacterial nylon filaments comprises the following steps:
1) preparing a skin master batch;
2) preparing core layer master batches;
3) drying the prepared skin layer master batch and the prepared core layer master batch, and respectively performing melt extrusion in two screws of a double-screw composite spinning machine; and (3) metering by a metering pump, feeding the mixture into a composite spinning assembly together, wherein the volume ratio of the skin layer master batch to the core layer master batch is 80-60: 20-40, spraying the mixture by a composite spinneret plate, cooling, oiling, winding and drafting to obtain the nylon filament.
Preferably, the production method of the antibacterial nylon filament comprises the following steps:
a. weighing bamboo charcoal, lithium carbonate, polyhexamethylene guanidine, Chinese juniper oil, zinc oxide-loaded zirconium phosphate and aminoethyl aminopropyl methyl diethoxy silane, and uniformly mixing and stirring to obtain the antibacterial agent;
b. mixing polyamide resin and an antibacterial agent, and granulating by a double-screw extruder to prepare master batch with a skin layer, wherein the granulation temperature is 220-240 ℃.
Preferably, the production method of the antibacterial nylon filament comprises the following steps:
weighing polyamide resin, cellulose acetate, polylactic acid and 2-mercaptobenzothiazole, mixing, granulating by a double-screw extruder to prepare core layer master batch, wherein the granulating temperature is 240-260 ℃.
Preferably, in the production method of the antibacterial nylon filament, the temperature of a hot plate during drafting is 50-70 ℃, the setting temperature of the hot plate is 110-150 ℃, the drafting multiple is 1.5-4.5 times, and the drafting speed is 200-600 m/min.
The invention has the beneficial effects that:
(1) according to the production method of the antibacterial nylon filament, disclosed by the invention, the composite filament comprises the skin layer fiber and the core layer fiber, and has excellent mechanical properties and strong antibacterial capability.
(2) The sheath fiber takes polyamide as a main body, the antibacterial property of polyamide resin is improved by adding an antibacterial agent, and the bamboo charcoal, lithium carbonate, polyhexamethylene guanidine and Chinese juniper oil are synergistically used as the antibacterial agent, so that the effect of killing pathogenic microorganisms or inhibiting growth is optimal; the core layer fiber takes polyamide resin as a main body, the comfort performance, the elasticity and the air permeability of the nylon fiber are improved by adding cellulose acetate, the hand feeling, the heat resistance, the antibacterial property, the flame retardance and the ultraviolet resistance of the nylon are improved by adding polylactic acid, and the antibacterial performance of the core layer is improved by adding 2-mercaptobenzothiazole.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
The scheme provides an antibacterial nylon filament, and the filament comprises sheath fibers and core fibers, wherein the sheath fibers account for 15-25% of the total amount, and the core fibers account for 85-75% of the total amount; the skin layer fiber comprises the following materials in parts by weight:
40-60 parts by weight of polyamide resin;
10-20 parts of an antibacterial agent.
The PA has good comprehensive properties including mechanical property, heat resistance, wear resistance, chemical resistance and self-lubricity, has low friction coefficient and certain flame retardance, is easy to process, is suitable for being filled with glass fiber and other fillers for reinforcing modification, improves the performance and enlarges the application range; the antibacterial property of the polyamide resin is improved by adding an antibacterial agent.
As another embodiment of the present disclosure, the antibacterial agent includes, by weight:
bamboo charcoal, lithium carbonate, polyhexamethylene guanidine and Chinese juniper oil are synergistically used as an antibacterial agent, so that the antibacterial agent has the best effect of killing pathogenic microorganisms or inhibiting growth.
In another embodiment of the present disclosure, the coating further comprises 0.5 to 1 part by weight of zinc oxide-supported zirconium phosphate. The zinc oxide loaded zirconium phosphate antibacterial mechanism is that active oxygen is gradually dissolved out of fibers, zinc ions diffuse into microbial cells to destroy protein structures and cause cell metabolism disorder, trace Zn is beneficial to human and harmful to microbes, and when the trace zinc ions contact bacterial cell membranes with negative charges, the zinc ions are firmly combined due to coulomb attraction and are transferred through cell walls to enter the cells to be combined with sulfydryl and amino of bacterial enzyme proteins to destroy the activity of bacterial synthetases, so that the cells lose division reproductive capacity and die.
In another embodiment, the composition further comprises 0.5 to 2 parts by weight of aminoethylaminopropylmethyldiethoxysilane. The compatibility of lithium carbonate, polyhexamethylene guanidine and Chinese juniper oil is improved by adding aminoethylaminopropylmethyldiethoxysilane, so that the antibacterial performance of the nylon filament is improved integrally.
As another embodiment of the present disclosure, the core layer fiber includes, in parts by weight:
40-60 parts by weight of polyamide resin;
12-14 parts by weight of cellulose acetate;
3-5 parts of polylactic acid.
The polyamide resin has good comprehensive properties including mechanical property, heat resistance, wear resistance, chemical resistance and self-lubricity, has low friction coefficient and certain flame retardance, is easy to process, is suitable for being filled with glass fiber and other fillers for reinforcing modification, improves the performance and expands the application range; cellulose acetate improves the comfort performance, elasticity and air permeability of the nylon fiber; the hand feeling, heat resistance, antibacterial property, flame retardance and ultraviolet resistance of the chinlon are improved by adding the polylactic acid.
As another embodiment of the present disclosure, the liquid composition further comprises 2-4 parts by weight of 2-mercaptobenzothiazole. The 2-mercaptobenzothiazole improves the bacteriostatic performance of the core layer.
A production method of antibacterial nylon filaments comprises the following steps:
1) preparing a skin master batch;
2) preparing core layer master batches;
3) drying the prepared skin layer master batch and the prepared core layer master batch, and respectively performing melt extrusion in two screws of a double-screw composite spinning machine; and (3) metering by a metering pump, feeding the mixture into a composite spinning assembly together, wherein the volume ratio of the skin layer master batch to the core layer master batch is 80-60: 20-40, spraying the mixture by a composite spinneret plate, cooling, oiling, winding and drafting to obtain the nylon filament.
As another embodiment of the present disclosure, the preparation method of the skin layer masterbatch comprises:
a. weighing bamboo charcoal, lithium carbonate, polyhexamethylene guanidine, Chinese juniper oil, zinc oxide-loaded zirconium phosphate and aminoethyl aminopropyl methyl diethoxy silane, and uniformly mixing and stirring to obtain the antibacterial agent;
b. mixing polyamide resin and an antibacterial agent, and granulating by a double-screw extruder to prepare master batch with a skin layer, wherein the granulation temperature is 220-240 ℃.
As another embodiment of the present disclosure, the preparation method of the core layer masterbatch includes:
weighing polyamide resin, cellulose acetate, polylactic acid and 2-mercaptobenzothiazole, mixing, granulating by a double-screw extruder to prepare core layer master batch, wherein the granulating temperature is 240-260 ℃.
In another embodiment of the present invention, the temperature of the hot plate during the drawing is 50 to 70 ℃, the setting temperature of the hot plate is 110 to 150 ℃, the drawing multiple is 1.5 to 4.5 times, and the drawing speed is 200 to 600 m/min.
Specific examples and comparative examples are listed below:
example 1:
the antibacterial nylon filament comprises 15% of sheath fiber and 85% of core fiber; the skin layer fiber comprises the following materials in parts by weight:
40 parts by weight of polyamide resin;
10 parts of antibacterial agent.
The antibacterial agent includes:
the preparation method of the skin master batch comprises the following steps:
a. weighing bamboo charcoal, lithium carbonate, polyhexamethylene guanidine, Chinese juniper oil, zinc oxide-loaded zirconium phosphate and aminoethyl aminopropyl methyl diethoxy silane, and uniformly mixing and stirring to obtain the antibacterial agent;
b. mixing polyamide resin and an antibacterial agent, and granulating by a double-screw extruder to prepare master batch with a skin layer, wherein the granulation temperature is 220 ℃.
The core layer fiber comprises the following components in parts by weight:
the preparation method of the core layer master batch comprises the following steps:
weighing polyamide resin, cellulose acetate, polylactic acid and 2-mercaptobenzothiazole, mixing, granulating by a double-screw extruder to prepare core layer master batch, wherein the granulating temperature is 240-260 ℃.
A production method of antibacterial nylon filaments comprises the following steps:
1) preparing a skin master batch;
2) preparing core layer master batches;
3) drying the prepared skin layer master batch and the prepared core layer master batch, and respectively performing melt extrusion in two screws of a double-screw composite spinning machine; metering by a metering pump, feeding into a composite spinning assembly together, wherein the volume ratio of the skin layer master batch to the core layer master batch melt is 80:20, spraying by a composite spinneret plate, cooling, oiling, winding and drafting to obtain the nylon filament; the hot plate temperature during drafting is 50 ℃, the shaping temperature of the hot plate is 110 ℃, the drafting multiple is 1.5 times, and the drafting speed is 200 m/min.
Example 2:
the antibacterial nylon filament comprises sheath fibers and core fibers, wherein the sheath fibers account for 20% of the total weight, and the core fibers account for 80% of the total weight; the skin layer fiber comprises the following materials in parts by weight:
50 parts by weight of polyamide resin;
12 parts of an antibacterial agent.
The antibacterial agent comprises the following components in parts by weight:
the preparation method of the skin master batch comprises the following steps:
a. weighing bamboo charcoal, lithium carbonate, polyhexamethylene guanidine, Chinese juniper oil, zinc oxide-loaded zirconium phosphate and aminoethyl aminopropyl methyl diethoxy silane, and uniformly mixing and stirring to obtain the antibacterial agent;
b. mixing polyamide resin and an antibacterial agent, and granulating by a double-screw extruder to prepare master batch with a skin layer, wherein the granulation temperature is 230 ℃.
The core layer fiber comprises the following components in parts by weight:
the preparation method of the core layer master batch comprises the following steps: weighing polyamide resin, cellulose acetate, polylactic acid and 2-mercaptobenzothiazole, mixing, granulating by a double-screw extruder to prepare core layer master batch, wherein the granulating temperature is 240-260 ℃.
A production method of antibacterial nylon filaments comprises the following steps:
1) preparing a skin master batch;
2) preparing core layer master batches;
3) drying the prepared skin layer master batch and the prepared core layer master batch, and respectively performing melt extrusion in two screws of a double-screw composite spinning machine; metering by a metering pump, feeding into a composite spinning assembly together, wherein the volume ratio of the skin layer master batch to the core layer master batch melt is 70:30, spraying by a composite spinneret plate, cooling, oiling, winding and drafting to obtain the nylon filament; the hot plate temperature during drafting is 60 ℃, the shaping temperature of the hot plate is 130 ℃, the drafting multiple is 2.5 times, and the drafting speed is 300 m/min.
Example 3:
the antibacterial nylon filament comprises 25% of sheath fiber and 75% of core fiber; the skin layer fiber comprises the following materials in parts by weight:
60 parts by weight of polyamide resin;
20 parts of antibacterial agent.
The antibacterial agent comprises the following components in parts by weight:
the preparation method of the skin master batch comprises the following steps:
a. weighing bamboo charcoal, lithium carbonate, polyhexamethylene guanidine, Chinese juniper oil, zinc oxide-loaded zirconium phosphate and aminoethyl aminopropyl methyl diethoxy silane, and uniformly mixing and stirring to obtain the antibacterial agent;
b. mixing polyamide resin and an antibacterial agent, and granulating by a double-screw extruder to prepare master batch with a skin layer, wherein the granulation temperature is 240 ℃.
The core fiber comprises:
the preparation method of the core layer master batch comprises the following steps: weighing polyamide resin, cellulose acetate, polylactic acid and 2-mercaptobenzothiazole, mixing, granulating by a double-screw extruder to prepare core layer master batch, wherein the granulating temperature is 260 ℃.
A production method of antibacterial nylon filaments comprises the following steps:
1) preparing a skin master batch;
2) preparing core layer master batches;
3) drying the prepared skin layer master batch and the prepared core layer master batch, and respectively performing melt extrusion in two screws of a double-screw composite spinning machine; metering by a metering pump, feeding into a composite spinning assembly together, spraying out the melt of the skin layer master batch and the core layer master batch at a volume ratio of 60:40 by a composite spinneret, cooling, oiling, winding and drafting to obtain the nylon filament yarn, wherein the temperature of a hot plate is 70 ℃, the setting temperature of the hot plate is 150 ℃, the drafting multiple is 4.5 times, and the drafting speed is 600 m/min.
Comparative example 1:
the antibacterial nylon filament comprises 15% of sheath fiber and 85% of core fiber; the skin layer fiber comprises the following materials in parts by weight:
40 parts by weight of polyamide resin;
10 parts of antibacterial agent.
The antibacterial agent includes:
the preparation method of the skin master batch comprises the following steps:
a. weighing bamboo charcoal, polyhexamethylene guanidine, Chinese juniper oil, zinc oxide loaded zirconium phosphate and aminoethyl aminopropyl methyl diethoxy silane, and mixing and stirring uniformly to obtain the antibacterial agent;
b. mixing polyamide resin and an antibacterial agent, and granulating by a double-screw extruder to prepare master batch with a skin layer, wherein the granulation temperature is 220 ℃.
The core layer fiber comprises the following components in parts by weight:
the preparation method of the core layer master batch comprises the following steps:
weighing polyamide resin, cellulose acetate, polylactic acid and 2-mercaptobenzothiazole, mixing, granulating by a double-screw extruder to prepare core layer master batch, wherein the granulating temperature is 240-260 ℃.
A production method of antibacterial nylon filaments comprises the following steps:
1) preparing a skin master batch;
2) preparing core layer master batches;
3) drying the prepared skin layer master batch and the prepared core layer master batch, and respectively performing melt extrusion in two screws of a double-screw composite spinning machine; metering by a metering pump, feeding into a composite spinning assembly together, wherein the volume ratio of the skin layer master batch to the core layer master batch melt is 80:20, spraying by a composite spinneret plate, cooling, oiling, winding and drafting to obtain the nylon filament; the hot plate temperature during drafting is 50 ℃, the shaping temperature of the hot plate is 110 ℃, the drafting multiple is 1.5 times, and the drafting speed is 200 m/min.
Comparative example 2:
the antibacterial nylon filament comprises 15% of sheath fiber and 85% of core fiber; the skin layer fiber comprises the following materials in parts by weight:
40 parts by weight of polyamide resin;
10 parts of antibacterial agent.
The antibacterial agent includes:
the preparation method of the skin master batch comprises the following steps:
a. weighing bamboo charcoal, lithium carbonate, Chinese juniper oil, zinc oxide loaded zirconium phosphate and aminoethylaminopropylmethyldiethoxysilane, and mixing and stirring uniformly to obtain the antibacterial agent;
b. mixing polyamide resin and an antibacterial agent, and granulating by a double-screw extruder to prepare master batch with a skin layer, wherein the granulation temperature is 220 ℃.
The core layer fiber comprises the following components in parts by weight:
the preparation method of the core layer master batch comprises the following steps:
weighing polyamide resin, cellulose acetate, polylactic acid and 2-mercaptobenzothiazole, mixing, granulating by a double-screw extruder to prepare core layer master batch, wherein the granulating temperature is 240-260 ℃.
A production method of antibacterial nylon filaments comprises the following steps:
1) preparing a skin master batch;
2) preparing core layer master batches;
3) drying the prepared skin layer master batch and the prepared core layer master batch, and respectively performing melt extrusion in two screws of a double-screw composite spinning machine; metering by a metering pump, feeding into a composite spinning assembly together, wherein the volume ratio of the skin layer master batch to the core layer master batch melt is 80:20, spraying by a composite spinneret plate, cooling, oiling, winding and drafting to obtain the nylon filament; the hot plate temperature during drafting is 50 ℃, the shaping temperature of the hot plate is 110 ℃, the drafting multiple is 1.5 times, and the drafting speed is 200 m/min.
Comparative example 3:
the antibacterial nylon filament comprises sheath fibers and core fibers, wherein the sheath fibers account for 20% of the total weight, and the core fibers account for 80% of the total weight; the skin layer fiber comprises the following materials in parts by weight:
50 parts by weight of polyamide resin;
12 parts of an antibacterial agent.
The antibacterial agent comprises the following components in parts by weight:
the preparation method of the skin master batch comprises the following steps:
a. weighing bamboo charcoal, lithium carbonate, polyhexamethylene guanidine, zinc oxide loaded zirconium phosphate and aminoethylaminopropylmethyldiethoxysilane, and mixing and stirring uniformly to obtain the antibacterial agent;
b. mixing polyamide resin and an antibacterial agent, and granulating by a double-screw extruder to prepare master batch with a skin layer, wherein the granulation temperature is 230 ℃.
The core layer fiber comprises the following components in parts by weight:
the preparation method of the core layer master batch comprises the following steps: weighing polyamide resin, cellulose acetate, polylactic acid and 2-mercaptobenzothiazole, mixing, granulating by a double-screw extruder to prepare core layer master batch, wherein the granulating temperature is 240-260 ℃.
A production method of antibacterial nylon filaments comprises the following steps:
1) preparing a skin master batch;
2) preparing core layer master batches;
3) drying the prepared skin layer master batch and the prepared core layer master batch, and respectively performing melt extrusion in two screws of a double-screw composite spinning machine; metering by a metering pump, feeding into a composite spinning assembly together, wherein the volume ratio of the skin layer master batch to the core layer master batch melt is 70:30, spraying by a composite spinneret plate, cooling, oiling, winding and drafting to obtain the nylon filament; the hot plate temperature during drafting is 60 ℃, the shaping temperature of the hot plate is 130 ℃, the drafting multiple is 2.5 times, and the drafting speed is 300 m/min.
Comparative example 4:
the antibacterial nylon filament comprises sheath fibers and core fibers, wherein the sheath fibers account for 20% of the total weight, and the core fibers account for 80% of the total weight; the skin layer fiber comprises the following materials in parts by weight:
50 parts by weight of polyamide resin;
12 parts of an antibacterial agent.
The antibacterial agent comprises the following components in parts by weight:
the preparation method of the skin master batch comprises the following steps:
a. weighing bamboo charcoal, lithium carbonate, polyhexamethylene guanidine, juniper oil and aminoethylaminopropylmethyldiethoxysilane, and mixing and stirring uniformly to obtain the antibacterial agent;
b. mixing polyamide resin and an antibacterial agent, and granulating by a double-screw extruder to prepare master batch with a skin layer, wherein the granulation temperature is 230 ℃.
The core layer fiber comprises the following components in parts by weight:
the preparation method of the core layer master batch comprises the following steps: weighing polyamide resin, cellulose acetate, polylactic acid and 2-mercaptobenzothiazole, mixing, granulating by a double-screw extruder to prepare core layer master batch, wherein the granulating temperature is 240-260 ℃.
A production method of antibacterial nylon filaments comprises the following steps:
1) preparing a skin master batch;
2) preparing core layer master batches;
3) drying the prepared skin layer master batch and the prepared core layer master batch, and respectively performing melt extrusion in two screws of a double-screw composite spinning machine; metering by a metering pump, feeding into a composite spinning assembly together, wherein the volume ratio of the skin layer master batch to the core layer master batch melt is 70:30, spraying by a composite spinneret plate, cooling, oiling, winding and drafting to obtain the nylon filament; the hot plate temperature during drafting is 60 ℃, the shaping temperature of the hot plate is 130 ℃, the drafting multiple is 2.5 times, and the drafting speed is 300 m/min.
Comparative example 5:
the antibacterial nylon filament comprises 25% of sheath fiber and 75% of core fiber; the skin layer fiber comprises the following materials in parts by weight:
60 parts by weight of polyamide resin;
20 parts of antibacterial agent.
The antibacterial agent comprises the following components in parts by weight:
the preparation method of the skin master batch comprises the following steps:
a. weighing bamboo charcoal, lithium carbonate, polyhexamethylene guanidine, Chinese juniper oil, zinc oxide-loaded zirconium phosphate and aminoethyl aminopropyl methyl diethoxy silane, and uniformly mixing and stirring to obtain the antibacterial agent;
b. mixing polyamide resin and an antibacterial agent, and granulating by a double-screw extruder to prepare master batch with a skin layer, wherein the granulation temperature is 240 ℃.
The core fiber comprises:
60 parts by weight of polyamide resin;
14 parts by weight of cellulose acetate;
4 parts by weight of 2-mercaptobenzothiazole;
the preparation method of the core layer master batch comprises the following steps: weighing polyamide resin, cellulose acetate and 2-mercaptobenzothiazole, mixing, and granulating by a double-screw extruder to obtain core layer master batch at the granulating temperature of 260 ℃.
A production method of antibacterial nylon filaments comprises the following steps:
1) preparing a skin master batch;
2) preparing core layer master batches;
3) drying the prepared skin layer master batch and the prepared core layer master batch, and respectively performing melt extrusion in two screws of a double-screw composite spinning machine; metering by a metering pump, feeding into a composite spinning assembly together, spraying out the melt of the skin layer master batch and the core layer master batch at a volume ratio of 60:40 by a composite spinneret, cooling, oiling, winding and drafting to obtain the nylon filament yarn, wherein the temperature of a hot plate is 70 ℃, the setting temperature of the hot plate is 150 ℃, the drafting multiple is 4.5 times, and the drafting speed is 600 m/min.
Comparative example 6:
the antibacterial nylon filament comprises 25% of sheath fiber and 75% of core fiber; the skin layer fiber comprises the following materials in parts by weight:
60 parts by weight of polyamide resin;
20 parts of antibacterial agent.
The antibacterial agent comprises the following components in parts by weight:
the preparation method of the skin master batch comprises the following steps:
a. weighing bamboo charcoal, lithium carbonate, polyhexamethylene guanidine, Chinese juniper oil, zinc oxide-loaded zirconium phosphate and aminoethyl aminopropyl methyl diethoxy silane, and uniformly mixing and stirring to obtain the antibacterial agent;
b. mixing polyamide resin and an antibacterial agent, and granulating by a double-screw extruder to prepare master batch with a skin layer, wherein the granulation temperature is 240 ℃.
The core fiber comprises:
60 parts by weight of polyamide resin;
14 parts by weight of cellulose acetate;
5 parts by weight of polylactic acid;
the preparation method of the core layer master batch comprises the following steps: weighing polyamide resin, cellulose acetate and polylactic acid, mixing, granulating by a double-screw extruder to prepare core layer master batch, wherein the granulating temperature is 260 ℃.
A production method of antibacterial nylon filaments comprises the following steps:
1) preparing a skin master batch;
2) preparing core layer master batches;
3) drying the prepared skin layer master batch and the prepared core layer master batch, and respectively performing melt extrusion in two screws of a double-screw composite spinning machine; metering by a metering pump, feeding into a composite spinning assembly together, spraying out the melt of the skin layer master batch and the core layer master batch at a volume ratio of 60:40 by a composite spinneret, cooling, oiling, winding and drafting to obtain the nylon filament yarn, wherein the temperature of a hot plate is 70 ℃, the setting temperature of the hot plate is 150 ℃, the drafting multiple is 4.5 times, and the drafting speed is 600 m/min.
The results of the performance tests of the examples and comparative examples are set forth below:
TABLE 1
As can be seen from Table 1, compared with comparative examples 1 to 6, the breaking strength, the tensile strength and the antibacterial performance of the examples 1 to 3 are superior to those of the comparative examples, so that the nylon filament prepared by the method provided by the invention has excellent mechanical properties and strong antibacterial ability.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. The antibacterial nylon filament is characterized by comprising 15-25% of sheath fiber and 85-75% of core fiber; the skin layer fiber comprises the following materials in parts by weight:
40-60 parts by weight of polyamide resin;
10-20 parts of an antibacterial agent.
2. The antibacterial nylon filament according to claim 1, wherein the antibacterial agent comprises, in parts by weight:
3. the antibacterial nylon filament according to claim 2, further comprising 0.5-1 part by weight of zinc oxide-loaded zirconium phosphate.
4. The antibacterial nylon filament according to claim 2, further comprising 0.5 to 2 parts by weight of aminoethylaminopropylmethyldiethoxysilane.
5. The antibacterial nylon filament according to claim 1, wherein the core layer fiber comprises, in parts by weight:
40-60 parts by weight of polyamide resin;
12-14 parts by weight of cellulose acetate;
3-5 parts of polylactic acid.
6. The antibacterial nylon filament according to claim 5, further comprising 2-4 parts by weight of 2-mercaptobenzothiazole.
7. A method for producing antibacterial nylon filament according to any one of claims 1 to 6, characterized by comprising the following steps:
1) preparing a skin master batch;
2) preparing core layer master batches;
3) drying the prepared skin layer master batch and the prepared core layer master batch, and respectively performing melt extrusion in two screws of a double-screw composite spinning machine; and (3) metering by a metering pump, feeding the mixture into a composite spinning assembly together, wherein the volume ratio of the skin layer master batch to the core layer master batch is 80-60: 20-40, spraying the mixture by a composite spinneret plate, cooling, oiling, winding and drafting to obtain the nylon filament.
8. The production method of antibacterial nylon filament according to claim 7, characterized in that the preparation method of the skin master batch comprises the following steps:
a. weighing bamboo charcoal, lithium carbonate, polyhexamethylene guanidine, Chinese juniper oil, zinc oxide-loaded zirconium phosphate and aminoethyl aminopropyl methyl diethoxy silane, and uniformly mixing and stirring to obtain the antibacterial agent;
b. mixing polyamide resin and an antibacterial agent, and granulating by a double-screw extruder to prepare master batch with a skin layer, wherein the granulation temperature is 220-240 ℃.
9. The production method of the antibacterial nylon filament according to claim 7, wherein the preparation method of the core layer master batch comprises the following steps:
weighing polyamide resin, cellulose acetate, polylactic acid and 2-mercaptobenzothiazole, mixing, granulating by a double-screw extruder to prepare core layer master batch, wherein the granulating temperature is 240-260 ℃.
10. The method for producing antibacterial nylon filament according to claim 7, wherein the temperature of a hot plate during drawing is 50-70 ℃, the setting temperature of the hot plate is 110-150 ℃, the drawing multiple is 1.5-4.5 times, and the drawing speed is 200-600 m/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010320145.5A CN111455495A (en) | 2020-04-22 | 2020-04-22 | Antibacterial nylon filament and production method thereof |
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| CN202010320145.5A CN111455495A (en) | 2020-04-22 | 2020-04-22 | Antibacterial nylon filament and production method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112011853A (en) * | 2020-09-17 | 2020-12-01 | 滁州兴邦聚合彩纤有限公司 | Production method of composite fiber |
| CN113151926A (en) * | 2021-04-07 | 2021-07-23 | 罗莱生活科技股份有限公司 | Skin-core type corn fiber/polyester composite antibacterial fiber, preparation method thereof and application thereof in curtain |
-
2020
- 2020-04-22 CN CN202010320145.5A patent/CN111455495A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112011853A (en) * | 2020-09-17 | 2020-12-01 | 滁州兴邦聚合彩纤有限公司 | Production method of composite fiber |
| CN113151926A (en) * | 2021-04-07 | 2021-07-23 | 罗莱生活科技股份有限公司 | Skin-core type corn fiber/polyester composite antibacterial fiber, preparation method thereof and application thereof in curtain |
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