CN111334878A - Preparation process of antibacterial polyester fiber fabric - Google Patents
Preparation process of antibacterial polyester fiber fabric Download PDFInfo
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- CN111334878A CN111334878A CN202010253745.4A CN202010253745A CN111334878A CN 111334878 A CN111334878 A CN 111334878A CN 202010253745 A CN202010253745 A CN 202010253745A CN 111334878 A CN111334878 A CN 111334878A
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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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
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Abstract
The invention discloses a preparation process of an antibacterial polyester fiber fabric; the preparation method comprises the following steps of grinding tourmaline in the presence of a dispersing agent to obtain tourmaline powder, mixing the tourmaline powder with titanium dioxide, adding the mixture into a maleic anhydride solution, carrying out a grafting reaction to obtain grafted tourmaline mixed powder, and adding the grafted tourmaline mixed powder in a polyester synthesis process to obtain composite polyester; carrying out melt spinning on the composite polyester to obtain polyester fiber; spinning the polyester fiber to obtain a polyester fiber fabric; according to the preparation process of the antibacterial polyester fiber fabric, after the polyester fiber fabric clothing is contacted with a human body, generated negative ions enter the human body through a respiratory tract and enter blood through an alveolar epithelial layer, so that the oxygen content of the blood is increased, and the vital capacity is increased.
Description
Technical Field
The invention belongs to the technical field of garment fabrics, and particularly relates to a preparation process of an antibacterial polyester fiber fabric.
Background
The fabric is a common textile base material in daily life and work, is various, comprises a high-temperature-resistant fabric, a corrosion-resistant fabric, a shading fabric, an ultraviolet-proof fabric, an antibacterial fabric and the like, and is applied to different fields according to the performance characteristics of the fabric.
The polyester fiber fabric is widely applied to the existing synthetic fibers, and the polyester fiber is polyethylene terephthalate (PET) fiber, namely, the polyester chip formed by polycondensation of polyethylene terephthalate and ethylene glycol is spun to obtain the final fiber, and the polyester fiber fabric is an ideal textile raw material. The elastic property of the fabric is close to that of wool, and the rigidity of macromolecular chains in the fiber is higher, so that the elastic modulus of the fiber is higher, the size stability of the fabric is good, the fabric is not easy to wrinkle after washing, and ironing can be avoided. In addition, the polyester fiber has higher strength than cotton, has the characteristics of good heat resistance, sun resistance, wear resistance, mildew resistance, moth resistance and the like, and has better chemical resistance. However, the existing polyester fiber fabric has no antibacterial property, and after the clothes made of the fabric are worn for a long time, a large number of bacteria are bred, so that the health and safety of a wearer are greatly threatened.
Disclosure of Invention
The invention aims to provide a preparation process of an antibacterial polyester fiber fabric, which aims to overcome the defects in the prior art.
The technical scheme adopted by the invention is as follows:
a preparation process of antibacterial polyester fiber fabric comprises grinding tourmaline in the presence of dispersant to obtain tourmaline powder;
mixing the tourmaline powder and titanium dioxide, and adding the mixture into a maleic anhydride solution for grafting reaction to obtain grafted tourmaline mixed powder;
adding the mixed powder of the grafted tourmaline powder in the polyester synthesis process to obtain composite polyester;
carrying out melt spinning on the composite polyester to obtain polyester fiber;
and spinning the polyester fiber to obtain the polyester fiber fabric.
The dispersing agent is polyethylene glycol;
the mixing ratio of the tourmaline and the polyethylene glycol is 150 g: 400-500 mL.
The grinding time is 5 hours, and the grinding rotating speed is 1800 r/min;
the average particle size of the tourmaline powder is 30 mu m;
the particle size of the titanium dioxide is 1 mu m.
The mass ratio of the tourmaline powder to the titanium dioxide is 1: 1-2.
The grafting reaction is as follows:
mixing tourmaline powder and titanium dioxide, adding into maleic anhydride solution, heating to 60-66 deg.C, stirring at 500r/min for 30min, standing for 1 hr, vacuum filtering, cleaning surface to neutrality, and oven drying to constant weight;
tourmaline, which is a cyclic silicate mineral material containing various elements, belongs to a trigonal system, generates permanent electromotive force when being stimulated by external pressure or temperature change, has the functions of generating negative oxygen ions and radiating far infrared rays, is a mineral material with human body health care function, has excellent performances of sterilization, heavy ion adsorption, surface activity and the like, and is widely applied to various fields. But because of the hydrophilic property of the surface of the tourmaline, the dispersibility and stability of the tourmaline in a polymer matrix are poor, and the performance of the composite material is influenced.
According to the invention, tourmaline powder and titanium dioxide are mixed and then added into a maleic anhydride solution, the surface properties of the tourmaline powder and the titanium dioxide are improved by carrying out a grafting reaction on the mixture, then the grafted tourmaline powder and titanium dioxide are added into polyester, the dispersibility and stability of the tourmaline powder and the titanium dioxide can be effectively improved, especially, the mixture is added in the polyester synthesis process, so that a polyester macromolecular chain can be directly connected to the surfaces of the tourmaline powder and the titanium dioxide, and a monomer can continuously carry out a polymerization reaction, so that the tourmaline powder and the titanium dioxide can form a connection point in a composite material, the stability of the composite material is greatly improved, and meanwhile, the mechanical properties of the composite material can be obviously improved.
The mixing ratio of the tourmaline powder to the maleic anhydride solution is 200 g: 400-450 mL;
the mass fraction of the maleic anhydride solution is 3-4%.
The preparation method of the composite polyester comprises the following steps:
adding fumaric anhydride, terephthalic acid, dipropylene glycol and ethylene glycol into a reaction kettle, adding a catalyst sulfuric acid under the protection of nitrogen, heating to 160 ℃ for stirring for 30min, continuously adjusting the temperature to 220 ℃ for 210 ℃, then adding the grafted tourmaline powder mixed powder, continuously reacting for 6 hours, then reducing the temperature to 180 ℃, adding hydroquinone, carrying out heat preservation reaction for 3 hours, and then cleaning and drying to constant weight to obtain the catalyst.
The molar ratio of the fumaric anhydride to the terephthalic acid to the dipropylene glycol to the ethylene glycol is 1:3:1: 3;
the mass ratio of the catalyst to the fumaric anhydride is 1: 40;
the mass ratio of hydroquinone to fumaric anhydride is 1: 50.
And carrying out melt spinning on the composite polyester to obtain the polyester fiber by adopting a capillary rheometer and a spinning roller.
Has the advantages that: according to the preparation process of the antibacterial polyester fiber fabric, after the polyester fiber fabric clothing is contacted with a human body, generated negative ions enter the human body through a respiratory tract and enter blood through an alveolar epithelial layer, so that the oxygen content of the blood is increased, and the vital capacity is increased; meanwhile, the anion concentration in blood can be effectively increased, the blood coagulation time is prolonged, the blood oxygen delivery, absorption and utilization are facilitated, the brain tissue obtains more oxygen, the brain activity is promoted, the neurasthenia is eliminated, and the sleep is improved. The air negative ions are beneficial to human health, have the effects of calming, hypnotizing, easing pain, reducing blood pressure and the like, and can inhibit germ reproduction, reduce blood pressure, eliminate fatigue and promote metabolism when the negative ions reach a certain concentration. According to the invention, after the tourmaline powder and the titanium dioxide are respectively subjected to grafting reaction treatment and then added into polyester synthesis, a certain amount of negative ions can be released into the air in the use process of the prepared polyester fiber fabric, so that the air quality can be adjusted, the fabric has good improvement effects on human health care and formaldehyde elimination, and meanwhile, the fabric can also improve the lung function, activate various enzymes of the body, enhance the immunity of the body, promote metabolism and the like;
the fiber prepared by the process has smoother surface, uniform surface, no obvious flaw and better orientation, which indicates that the grafted tourmaline mixed powder added after treatment is used as a filler, can still present better spinnability and thermal bonding property in the melt spinning process, and does not generate obvious cracks. The uniform dispersion of the grafted tourmaline mixed powder in the polyester polymer matrix is one of the key factors for enhancing the mechanical property of the polyester fiber, because the aggregation of the conventional filler can cause the structural defect of the composite material, thereby influencing the mechanical property of the composite material.
Drawings
FIG. 1 is a scanning electron micrograph of a fiber.
Detailed Description
A preparation process of antibacterial polyester fiber fabric comprises grinding tourmaline in the presence of dispersant to obtain tourmaline powder;
mixing the tourmaline powder and titanium dioxide, and adding the mixture into a maleic anhydride solution for grafting reaction to obtain grafted tourmaline mixed powder;
adding the mixed powder of the grafted tourmaline powder in the polyester synthesis process to obtain composite polyester;
carrying out melt spinning on the composite polyester to obtain polyester fiber;
and spinning the polyester fiber to obtain the polyester fiber fabric.
The dispersing agent is polyethylene glycol;
the mixing ratio of the tourmaline and the polyethylene glycol is 150 g: 400-500 mL.
The grinding time is 5 hours, and the grinding rotating speed is 1800 r/min;
the average particle size of the tourmaline powder is 30 mu m;
the particle size of the titanium dioxide is 1 mu m.
The mass ratio of the tourmaline powder to the titanium dioxide is 1: 1-2.
The grafting reaction is as follows:
mixing tourmaline powder and titanium dioxide, adding into maleic anhydride solution, heating to 60-66 deg.C, stirring at 500r/min for 30min, standing for 1 hr, vacuum filtering, cleaning surface to neutrality, and oven drying to constant weight;
the mixing ratio of the tourmaline powder to the maleic anhydride solution is 200 g: 400-450 mL;
the mass fraction of the maleic anhydride solution is 3-4%.
The preparation method of the composite polyester comprises the following steps:
adding fumaric anhydride, terephthalic acid, dipropylene glycol and ethylene glycol into a reaction kettle, adding a catalyst sulfuric acid under the protection of nitrogen, heating to 160 ℃ for stirring for 30min, continuously adjusting the temperature to 220 ℃ for 210 ℃, then adding the grafted tourmaline powder mixed powder, continuously reacting for 6 hours, then reducing the temperature to 180 ℃, adding hydroquinone, carrying out heat preservation reaction for 3 hours, and then cleaning and drying to constant weight to obtain the catalyst.
The molar ratio of the fumaric anhydride to the terephthalic acid to the dipropylene glycol to the ethylene glycol is 1:3:1: 3;
the mass ratio of the catalyst to the fumaric anhydride is 1: 40;
the mass ratio of hydroquinone to fumaric anhydride is 1: 50.
And carrying out melt spinning on the composite polyester to obtain the polyester fiber by adopting a capillary rheometer and a spinning roller.
The following will clearly and completely describe the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation process of an antibacterial polyester fiber fabric comprises the following steps of grinding tourmaline in the presence of polyethylene glycol to obtain tourmaline powder, wherein the mixing ratio of the tourmaline powder to the polyethylene glycol is 150 g: 400mL, 5 hours of grinding time, 1800r/min of grinding speed and 30 mu m of tourmaline powder average particle size; the titanium dioxide particle size was 1 μm. Mixing tourmaline powder and titanium dioxide at a mass ratio of 1:1, adding the mixture into a maleic anhydride solution, and carrying out a grafting reaction to obtain a grafted tourmaline mixed powder, wherein the grafting reaction is as follows: mixing tourmaline powder and titanium dioxide, adding into maleic anhydride solution, heating to 60 deg.C, stirring at 500r/min for 30min, standing for 1 hr, vacuum filtering, cleaning surface to neutrality, and oven drying to constant weight; the mixing ratio of the tourmaline powder to the maleic anhydride solution is 200 g: 400 mL; the mass fraction of the maleic anhydride solution is 3%, the composite polyester is obtained by adding the mixed powder of the grafted tourmaline powder in the polyester synthesis process, and the preparation method of the composite polyester comprises the following steps: adding fumaric anhydride, terephthalic acid, dipropylene glycol and ethylene glycol into a reaction kettle, adding a catalyst sulfuric acid under the protection of nitrogen, heating to 150 ℃, stirring for 30min, continuously adjusting the temperature to 210 ℃, then adding the mixed powder of the grafted tourmaline powder, continuously reacting for 6 hours, then reducing the temperature to 180 ℃, adding hydroquinone, carrying out heat preservation reaction for 3 hours, cleaning, and drying to constant weight to obtain the catalyst. The molar ratio of the fumaric anhydride to the terephthalic acid to the dipropylene glycol to the ethylene glycol is 1:3:1: 3; the mass ratio of the catalyst to the fumaric anhydride is 1: 40; the mass ratio of hydroquinone to fumaric anhydride is 1: 50; carrying out melt spinning on the composite polyester to obtain polyester fibers, carrying out melt spinning on the composite polyester to obtain the polyester fibers by adopting a capillary rheometer and a spinning roller, and spinning the polyester fibers to obtain the polyester fiber fabric.
The physical properties were measured according to GB/T528-1998, using a universal material tester at a test temperature (25. + -. 2) ℃ at a tensile rate of 500mm/min, and the tear strength was measured according to GB/T529-1999 (right angle); the performance of the fiber monofilaments obtained in example 1 was measured, 15 fibers were used in each group, and the average value of the measurement results was obtained:
TABLE 1
| Standard of merit | The result of the detection | |
| Breaking strength/(CN/dtex) | ≥0.75 | 1.382 |
| Elongation at break/% | / | 451 |
| Boiling water shrinkage/% | ≤16 | 12.3 |
As can be seen from table 1, the fiber prepared in example 1 has excellent mechanical properties.
Example 2
A preparation process of an antibacterial polyester fiber fabric comprises the following steps of grinding tourmaline in the presence of polyethylene glycol to obtain tourmaline powder, wherein the mixing ratio of the tourmaline powder to the polyethylene glycol is 150 g: 500mL, 5 hours of grinding time, 1800r/min of grinding speed and 30 mu m of tourmaline powder average particle size; the titanium dioxide particle size was 1 μm. Mixing tourmaline powder and titanium dioxide at a mass ratio of 1:2, adding the mixture into a maleic anhydride solution, and carrying out a grafting reaction to obtain a grafted tourmaline mixed powder, wherein the grafting reaction is as follows: mixing tourmaline powder and titanium dioxide, adding into maleic anhydride solution, heating to 66 deg.C, stirring at 500r/min for 30min, standing for 1 hr, vacuum filtering, cleaning surface to neutrality, and oven drying to constant weight; the mixing ratio of the tourmaline powder to the maleic anhydride solution is 200 g: 450 mL; the mass fraction of the maleic anhydride solution is 3-4%, and the composite polyester is obtained by adding the mixed powder of the grafted tourmaline powder in the polyester synthesis process, wherein the preparation method of the composite polyester comprises the following steps: adding fumaric anhydride, terephthalic acid, dipropylene glycol and ethylene glycol into a reaction kettle, adding a catalyst sulfuric acid under the protection of nitrogen, heating to 160 ℃, stirring for 30min, continuously adjusting the temperature to 220 ℃, then adding the mixed powder of the grafted tourmaline powder, continuously reacting for 6 hours, then reducing the temperature to 180 ℃, adding hydroquinone, carrying out heat preservation reaction for 3 hours, cleaning, and drying to constant weight to obtain the catalyst. The molar ratio of the fumaric anhydride to the terephthalic acid to the dipropylene glycol to the ethylene glycol is 1:3:1: 3; the mass ratio of the catalyst to the fumaric anhydride is 1: 40; the mass ratio of hydroquinone to fumaric anhydride is 1: 50; carrying out melt spinning on the composite polyester to obtain polyester fibers, carrying out melt spinning on the composite polyester to obtain the polyester fibers by adopting a capillary rheometer and a spinning roller, and spinning the polyester fibers to obtain the polyester fiber fabric.
The physical properties were measured in accordance with GB/T528-1998, using a universal material tester at a test temperature (25. + -. 2). degree.C., at a tensile rate of 500mm/min, and the tear strength was measured in accordance with GB/T529-1999 (right angle).
The physical properties were measured according to GB/T528-1998, using a universal material tester at a test temperature (25. + -. 2) ℃ at a tensile rate of 500mm/min, and the tear strength was measured according to GB/T529-1999 (right angle); the performance of the fiber monofilaments obtained in example 1 was measured, 15 fibers were used in each group, and the average value of the measurement results was obtained:
TABLE 2
| Standard of merit | The result of the detection | |
| Breaking strength/(CN/dtex) | ≥0.75 | 1.395 |
| Elongation at break/% | / | 457 |
| Boiling water shrinkage/% | ≤16 | 12.0 |
Example 3
A preparation process of an antibacterial polyester fiber fabric comprises the following steps of grinding tourmaline in the presence of polyethylene glycol to obtain tourmaline powder, wherein the mixing ratio of the tourmaline powder to the polyethylene glycol is 150 g: 450mL, the grinding time is 5 hours, the grinding rotating speed is 1800r/min, and the average particle size of the tourmaline powder is 30 mu m; the titanium dioxide particle size was 1 μm. Mixing tourmaline powder and titanium dioxide at a mass ratio of 1:1.2, adding into maleic anhydride solution for grafting reaction to obtain grafted tourmaline mixed powder, wherein the grafting reaction is as follows: mixing tourmaline powder and titanium dioxide, adding into maleic anhydride solution, heating to 63 deg.C, stirring at 500r/min for 30min, standing for 1 hr, vacuum filtering, cleaning surface to neutrality, and oven drying to constant weight; the mixing ratio of the tourmaline powder to the maleic anhydride solution is 200 g: 420 mL; the mass fraction of the maleic anhydride solution is 3.5%, and the composite polyester is obtained by adding the mixed powder of the grafted tourmaline powder in the polyester synthesis process, wherein the preparation method of the composite polyester comprises the following steps: adding fumaric anhydride, terephthalic acid, dipropylene glycol and ethylene glycol into a reaction kettle, adding a catalyst sulfuric acid under the protection of nitrogen, heating to 153 ℃, stirring for 30min, continuously adjusting the temperature to 212 ℃, then adding the mixed powder of the grafted tourmaline powder, continuously reacting for 6 hours, then reducing the temperature to 180 ℃, adding hydroquinone, carrying out heat preservation reaction for 3 hours, cleaning, and drying to constant weight to obtain the catalyst. The molar ratio of the fumaric anhydride to the terephthalic acid to the dipropylene glycol to the ethylene glycol is 1:3:1: 3; the mass ratio of the catalyst to the fumaric anhydride is 1: 40; the mass ratio of hydroquinone to fumaric anhydride is 1: 50; carrying out melt spinning on the composite polyester to obtain polyester fibers, carrying out melt spinning on the composite polyester to obtain the polyester fibers by adopting a capillary rheometer and a spinning roller, and spinning the polyester fibers to obtain the polyester fiber fabric.
The physical properties were measured according to GB/T528-1998, using a universal material tester at a test temperature (25. + -. 2) ℃ at a tensile rate of 500mm/min, and the tear strength was measured according to GB/T529-1999 (right angle); the performance of the fiber monofilaments obtained in example 1 was measured, 15 fibers were used in each group, and the average value of the measurement results was obtained:
TABLE 3
| Standard of merit | The result of the detection | |
| Breaking strength/(CN/dtex) | ≥0.75 | 1.406 |
| Elongation at break/% | / | 462 |
| Boiling water shrinkage/% | ≤16 | 12.9 |
Example 4
A preparation process of an antibacterial polyester fiber fabric comprises the following steps of grinding tourmaline in the presence of polyethylene glycol to obtain tourmaline powder, wherein the mixing ratio of the tourmaline powder to the polyethylene glycol is 150 g: 460mL, 5 hours of grinding time, 1800r/min of grinding speed and 30 mu m of tourmaline powder average particle size; the titanium dioxide particle size was 1 μm. Mixing tourmaline powder and titanium dioxide at a mass ratio of 1:1.6, adding into maleic anhydride solution for grafting reaction to obtain grafted tourmaline mixed powder, wherein the grafting reaction is as follows: mixing tourmaline powder and titanium dioxide, adding into maleic anhydride solution, heating to 63 deg.C, stirring at 500r/min for 30min, standing for 1 hr, vacuum filtering, cleaning surface to neutrality, and oven drying to constant weight; the mixing ratio of the tourmaline powder to the maleic anhydride solution is 200 g: 430 mL; the mass fraction of the maleic anhydride solution is 3.7%, and the composite polyester is obtained by adding the mixed powder of the grafted tourmaline powder in the polyester synthesis process, wherein the preparation method of the composite polyester comprises the following steps: adding fumaric anhydride, terephthalic acid, dipropylene glycol and ethylene glycol into a reaction kettle, adding a catalyst sulfuric acid under the protection of nitrogen, heating to 157 ℃, stirring for 30min, continuously adjusting the temperature to 218 ℃, then adding the mixed powder of the grafted tourmaline powder, continuously reacting for 6 hours, then reducing the temperature to 180 ℃, adding hydroquinone, carrying out heat preservation reaction for 3 hours, cleaning, and drying to constant weight to obtain the catalyst. The molar ratio of the fumaric anhydride to the terephthalic acid to the dipropylene glycol to the ethylene glycol is 1:3:1: 3; the mass ratio of the catalyst to the fumaric anhydride is 1: 40; the mass ratio of hydroquinone to fumaric anhydride is 1: 50; carrying out melt spinning on the composite polyester to obtain polyester fibers, carrying out melt spinning on the composite polyester to obtain the polyester fibers by adopting a capillary rheometer and a spinning roller, and spinning the polyester fibers to obtain the polyester fiber fabric.
The physical properties were measured according to GB/T528-1998, using a universal material tester at a test temperature (25. + -. 2) ℃ at a tensile rate of 500mm/min, and the tear strength was measured according to GB/T529-1999 (right angle); the performance of the fiber monofilaments obtained in example 1 was measured, 15 fibers were used in each group, and the average value of the measurement results was obtained:
TABLE 4
| Standard of merit | The result of the detection | |
| Breaking strength/(CN/dtex) | ≥0.75 | 1.403 |
| Elongation at break/% | / | 460 |
| Boiling water shrinkage/% | ≤16 | 12.7 |
Example 5
A preparation process of an antibacterial polyester fiber fabric comprises the following steps of grinding tourmaline in the presence of polyethylene glycol to obtain tourmaline powder, wherein the mixing ratio of the tourmaline powder to the polyethylene glycol is 150 g: 460mL, 5 hours of grinding time, 1800r/min of grinding speed and 30 mu m of tourmaline powder average particle size; the titanium dioxide particle size was 1 μm. Mixing tourmaline powder and titanium dioxide at a mass ratio of 1:1.8, adding the mixture into maleic anhydride solution, and performing grafting reaction to obtain a grafted tourmaline mixed powder, wherein the grafting reaction is as follows: mixing tourmaline powder and titanium dioxide, adding into maleic anhydride solution, heating to 65 deg.C, stirring at 500r/min for 30min, standing for 1 hr, vacuum filtering, cleaning surface to neutrality, and oven drying to constant weight; the mixing ratio of the tourmaline powder to the maleic anhydride solution is 200 g: 440 mL; the mass fraction of the maleic anhydride solution is 3-4%, and the composite polyester is obtained by adding the mixed powder of the grafted tourmaline powder in the polyester synthesis process, wherein the preparation method of the composite polyester comprises the following steps: adding fumaric anhydride, terephthalic acid, dipropylene glycol and ethylene glycol into a reaction kettle, adding a catalyst sulfuric acid under the protection of nitrogen, heating to 155 ℃, stirring for 30min, continuously adjusting the temperature to 216 ℃, then adding the mixed powder of the grafted tourmaline powder, continuously reacting for 6 hours, then reducing the temperature to 180 ℃, adding hydroquinone, carrying out heat preservation reaction for 3 hours, cleaning, and drying to constant weight to obtain the catalyst. The molar ratio of the fumaric anhydride to the terephthalic acid to the dipropylene glycol to the ethylene glycol is 1:3:1: 3; the mass ratio of the catalyst to the fumaric anhydride is 1: 40; the mass ratio of hydroquinone to fumaric anhydride is 1: 50; carrying out melt spinning on the composite polyester to obtain polyester fibers, carrying out melt spinning on the composite polyester to obtain the polyester fibers by adopting a capillary rheometer and a spinning roller, and spinning the polyester fibers to obtain the polyester fiber fabric.
Physical properties were measured according to GB/T528-1998, using a universal material tester at a test temperature (25. + -.2) ℃ at a tensile rate of 500mm/min, and the tear strength was measured according to GB/T529-1999 (right angle):
referring to GB/T6505-2008 'test method for thermal shrinkage of chemical fiber filament', the thermal shrinkage of sample fiber is tested by a skein method. The 10 m filaments were shaken out with a thread yarn length measuring instrument and placed on a wool board for balance for 4 h. The sample was then hung on a hook, and a pre-tension of 0.22cN/dtex was applied to the lower end, and the length L0(cm) was measured after waiting 30 s. And (3) putting the balanced sample into deionized boiling water at 100 ℃ in a relaxed state, heating and boiling for 30min by using a digital display constant-temperature water bath kettle, naturally drying and balancing for 8 h. The length after boiling L1 (cm) was measured. Each sample was tested 5 times and the results averaged. The boiling water shrinkage S (%) is calculated by the formula:
S = (L0－L1）/L0×100%；
TABLE 5
| Standard of merit | The result of the detection | |
| Breaking strength/(CN/dtex) | ≥0.75 | 1.393 |
| Elongation at break/% | / | 456 |
| Boiling water shrinkage/% | ≤16 | 12.2 |
And (3) testing:
the antibacterial and bacteriostatic performance test is carried out according to the GB/T20944.3-2008 standard test:
and (3) carrying out antibacterial and bacteriostatic performance tests on the samples of the examples and the comparative examples:
TABLE 6
Comparative example 1:
a preparation process of an antibacterial polyester fiber fabric comprises the following steps of grinding tourmaline in the presence of polyethylene glycol to obtain tourmaline powder, wherein the mixing ratio of the tourmaline powder to the polyethylene glycol is 150 g: 460mL, 5 hours of grinding time, 1800r/min of grinding speed and 30 mu m of mean particle size of tourmaline powder. Tourmaline powder is added in the polyester synthesis process to obtain the composite polyester, and the preparation method of the composite polyester comprises the following steps: adding fumaric anhydride, terephthalic acid, dipropylene glycol and ethylene glycol into a reaction kettle, adding a catalyst sulfuric acid under the protection of nitrogen, heating to 155 ℃, stirring for 30min, continuously adjusting the temperature to 216 ℃, then adding the mixed powder of the grafted tourmaline powder, continuously reacting for 6 hours, then reducing the temperature to 180 ℃, adding hydroquinone, carrying out heat preservation reaction for 3 hours, cleaning, and drying to constant weight to obtain the catalyst. The molar ratio of the fumaric anhydride to the terephthalic acid to the dipropylene glycol to the ethylene glycol is 1:3:1: 3; the mass ratio of the catalyst to the fumaric anhydride is 1: 40; the mass ratio of hydroquinone to fumaric anhydride is 1: 50; carrying out melt spinning on the composite polyester to obtain polyester fibers, carrying out melt spinning on the composite polyester to obtain the polyester fibers by adopting a capillary rheometer and a spinning roller, and spinning the polyester fibers to obtain the polyester fiber fabric.
Comparative example 2:
a preparation process of an antibacterial polyester fiber fabric, wherein the granularity of titanium dioxide is 1 mu m. Titanium dioxide is added in the polyester synthesis process to obtain composite polyester, and the preparation method of the composite polyester comprises the following steps: adding fumaric anhydride, terephthalic acid, dipropylene glycol and ethylene glycol into a reaction kettle, adding a catalyst sulfuric acid under the protection of nitrogen, heating to 155 ℃, stirring for 30min, continuously adjusting the temperature to 216 ℃, then adding the mixed powder of the grafted tourmaline powder, continuously reacting for 6 hours, then reducing the temperature to 180 ℃, adding hydroquinone, carrying out heat preservation reaction for 3 hours, cleaning, and drying to constant weight to obtain the catalyst. The molar ratio of the fumaric anhydride to the terephthalic acid to the dipropylene glycol to the ethylene glycol is 1:3:1: 3; the mass ratio of the catalyst to the fumaric anhydride is 1: 40; the mass ratio of hydroquinone to fumaric anhydride is 1: 50; carrying out melt spinning on the composite polyester to obtain polyester fibers, carrying out melt spinning on the composite polyester to obtain the polyester fibers by adopting a capillary rheometer and a spinning roller, and spinning the polyester fibers to obtain the polyester fiber fabric.
The surface morphology of the fiber of example 4 was observed by using a SU1510 type scanning electron microscope (japanese unexamined patent publication) as shown in fig. 1. as can be seen from fig. 1, the surface of the fiber prepared by the process of the present invention was smoother, and it was found that the surface of the fiber was uniform, had no significant flaws, and had better orientation, which indicates that the grafted tourmaline mixed powder added after the treatment of the present invention as a filler can still exhibit better spinnability and thermal bondability in the melt spinning process without significant cracks. The uniform dispersion of the grafted tourmaline mixed powder in the polyester polymer matrix is one of the key factors for enhancing the mechanical property of the polyester fiber, because the aggregation of the conventional filler can cause the structural defect of the composite material, thereby influencing the mechanical property of the composite material.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the present invention is not limited to the illustrated embodiments, and all the modifications and equivalents of the embodiments may be made without departing from the spirit of the present invention.
Claims (8)
1. A preparation process of an antibacterial polyester fiber fabric is characterized by comprising the following steps: grinding tourmaline in the presence of a dispersant to obtain tourmaline powder;
mixing the tourmaline powder and titanium dioxide, and adding the mixture into a maleic anhydride solution for grafting reaction to obtain grafted tourmaline mixed powder;
adding the mixed powder of the grafted tourmaline powder in the polyester synthesis process to obtain composite polyester;
carrying out melt spinning on the composite polyester to obtain polyester fiber;
and spinning the polyester fiber to obtain the polyester fiber fabric.
2. The preparation process of the antibacterial polyester fiber fabric according to claim 1, which is characterized by comprising the following steps of: the dispersing agent is polyethylene glycol;
the mixing ratio of the tourmaline and the polyethylene glycol is 150 g: 400-500 mL.
3. The preparation process of the antibacterial polyester fiber fabric according to claim 1, which is characterized by comprising the following steps of: the grinding time is 5 hours, and the grinding rotating speed is 1800 r/min;
the average particle size of the tourmaline powder is 30 mu m;
the particle size of the titanium dioxide is 1 mu m.
4. The preparation process of the antibacterial polyester fiber fabric according to claim 1, which is characterized by comprising the following steps of: the mass ratio of the tourmaline powder to the titanium dioxide is 1: 1-2.
5. The preparation process of the antibacterial polyester fiber fabric according to claim 1 or 4, characterized by comprising the following steps: the grafting reaction is as follows:
mixing tourmaline powder and titanium dioxide, adding into maleic anhydride solution, heating to 60-66 deg.C, stirring at 500r/min for 30min, standing for 1 hr, vacuum filtering, cleaning surface to neutrality, and oven drying to constant weight;
the mixing ratio of the tourmaline powder to the maleic anhydride solution is 200 g: 400-450 mL;
the mass fraction of the maleic anhydride solution is 3-4%.
6. The preparation process of the antibacterial polyester fiber fabric according to claim 1, which is characterized by comprising the following steps of: the preparation method of the composite polyester comprises the following steps:
adding fumaric anhydride, terephthalic acid, dipropylene glycol and ethylene glycol into a reaction kettle, adding a catalyst sulfuric acid under the protection of nitrogen, heating to 160 ℃ for stirring for 30min, continuously adjusting the temperature to 220 ℃ for 210 ℃, then adding the grafted tourmaline powder mixed powder, continuously reacting for 6 hours, then reducing the temperature to 180 ℃, adding hydroquinone, carrying out heat preservation reaction for 3 hours, and then cleaning and drying to constant weight to obtain the catalyst.
7. The preparation process of the antibacterial polyester fiber fabric according to claim 6, characterized by comprising the following steps: the molar ratio of the fumaric anhydride to the terephthalic acid to the dipropylene glycol to the ethylene glycol is 1:3:1: 3;
the mass ratio of the catalyst to the fumaric anhydride is 1: 40;
the mass ratio of hydroquinone to fumaric anhydride is 1: 50.
8. The preparation process of the antibacterial polyester fiber fabric according to claim 1, which is characterized by comprising the following steps of: and carrying out melt spinning on the composite polyester to obtain the polyester fiber by adopting a capillary rheometer and a spinning roller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010253745.4A CN111334878A (en) | 2020-04-02 | 2020-04-02 | Preparation process of antibacterial polyester fiber fabric |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010253745.4A CN111334878A (en) | 2020-04-02 | 2020-04-02 | Preparation process of antibacterial polyester fiber fabric |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826741A (en) * | 2020-07-26 | 2020-10-27 | 向自嫒 | Anion polyester fiber and fabric |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826741A (en) * | 2020-07-26 | 2020-10-27 | 向自嫒 | Anion polyester fiber and fabric |
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