阅读说明：本技术 一种持久抗菌的易染亲水聚酯纤维面料 (Durable antibacterial easy-to-dye hydrophilic polyester fiber fabric ) 是由 程旺生 于 2018-04-04 设计创作，主要内容包括：本发明涉及一种持久抗菌的易染亲水聚酯纤维面料,属于聚酯纤维面料技术领域。采用双季铵盐改性单体为亲水、抗菌单体,聚酯纤维分子主链上含有大量的季铵盐基团；采用1,4-二羟基丁烷-2-磺酸钠为易染阴离子改性单体,磺酸根阴离子基团位于聚酯纤维的支链上。由于本发明所述的聚酯纤维面料易染,且实现了亲水性、抗静电性、持久抗菌性的综合效果,具有广泛的应用前景。(The invention relates to a durable antibacterial easy-to-dye hydrophilic polyester fiber fabric, and belongs to the technical field of polyester fiber fabrics. The double quaternary ammonium salt modified monomer is adopted as a hydrophilic and antibacterial monomer, and the main chain of the polyester fiber molecule contains a large amount of quaternary ammonium salt groups; 1, 4-dihydroxy butane-2-sodium sulfonate is adopted as a chromophil anion modified monomer, and a sulfonate anion group is positioned on a branched chain of the polyester fiber. The polyester fiber fabric is easy to dye, realizes the comprehensive effects of hydrophilicity, antistatic property and lasting antibacterial property, and has wide application prospect.)

1. The durable antibacterial easy-to-dye hydrophilic polyester fiber fabric is characterized by comprising the following preparation methods: sequentially adding a biquaternary ammonium salt modified dihydric alcohol monomer, ethylene glycol, terephthalic acid, a polycondensation catalyst, a heat stabilizer and an antioxidant into a reactor, stirring and pulping, and heating to 230-250 ℃ for reaction; then adding an easily-dyed anionic monomer into the reactor, heating to continue reaction, cooling, slicing and drawing to obtain easily-dyed hydrophilic quaternary ammonium salt modified polyester fibers, and knitting to obtain the durable antibacterial easily-dyed hydrophilic polyester fiber fabric;

the durable antibacterial easy-to-dye hydrophilic polyester fiber fabric adopts biquaternary ammonium salt modified monomers as hydrophilic and antibacterial monomers, and the main chain of the polyester fiber molecule contains a large number of quaternary ammonium salt groups; 1, 4-dihydroxy butane-2-sodium sulfonate is adopted as a dyeable anion monomer, and a sulfonate anion group is positioned on a branched chain of the polyester fiber.

2. The durable antibacterial easy-to-dye hydrophilic polyester fiber fabric according to claim 1, which is characterized in that the preparation method comprises the following steps in parts by weight:

sequentially adding 20-25 parts of biquaternary ammonium salt modified dihydric alcohol monomer, 25-28 parts of ethylene glycol, 130-150 parts of terephthalic acid, 0.1-0.5 part of polycondensation catalyst, 0.01-0.03 part of heat stabilizer and 0.01-0.03 part of antioxidant into a reactor provided with a stirrer and a heating device, stirring and pulping at normal temperature, heating to 230-250 ℃ after pulping, and reacting for 2-3 hours; and then adding 1.5-3 parts of easily-dyed anionic monomer into the reactor, heating to 240-260 ℃, reacting for 1-2 hours, heating to 265-280 ℃, continuing to react for 3-5 hours, cooling, slicing, drawing to obtain easily-dyed hydrophilic quaternary ammonium salt modified polyester fibers, and knitting to obtain the durable antibacterial easily-dyed hydrophilic polyester fiber fabric.

3. A durable antibacterial easy-dyeing hydrophilic polyester fiber fabric as claimed in claim 1 or 2, wherein the polycondensation catalyst is at least one of ethylene glycol titanium, antimony trioxide and antimony acetate.

4. A durable antibacterial easy-dyeing hydrophilic polyester fiber fabric according to claim 1 or 2, wherein the heat stabilizer is at least one of trimethyl phosphate and tris (nonylphenyl) phosphite.

5. A durable antibacterial easy-dyeing hydrophilic polyester fiber fabric according to claim 1 or 2, wherein the antioxidant is at least one of basf antioxidant 1010, basf antioxidant B900 and tris (2, 4-di-tert-butylphenyl) phosphite.

6. A durable and antibacterial easy-dyeing hydrophilic polyester fiber fabric according to claim 1 or 2, wherein the easy-dyeing anionic monomer is sodium 1, 4-dihydroxybutane-2-sulfonate.

7. The durable, antibacterial and easily-dyed hydrophilic polyester fiber fabric according to claim 1 or 2, wherein the molecular structural formula of the diquaternary ammonium salt modified glycol monomer is as follows:

wherein m is 1-3; n is 1 to 5; x is Cl (chlorine) or Br (bromine).

8. The durable antibacterial easy-to-dye hydrophilic polyester fiber fabric according to claim 1 or 2, wherein the preparation method of the biquaternary ammonium salt modified diol monomer comprises the following steps:

sequentially adding 1-1.2 mol of dibasic tertiary amine, 0.001-0.002 mol of catalyst and 1-2 mol of ethyl acetate into a reactor provided with a stirrer, a heating device and a liquid dropping device, heating to 80-120 ℃, then slowly dropping 2mol of halohydrin into the reactor through the liquid dropping device, continuing stirring and reacting for 2-3 hours after dropping for 1-2 hours, then cooling to room temperature, removing ethyl acetate and unreacted monomers through reduced pressure distillation to obtain a crude product of the biquaternary ammonium salt monomer, and washing the crude product of the biquaternary ammonium salt monomer with ethyl ether and drying in vacuum to obtain the biquaternary ammonium salt modified dihydric alcohol monomer.

9. The durable, antibacterial and easily dyeable hydrophilic polyester fiber fabric according to claim 8, wherein the dibasic tertiary amine is at least one of N, N ' -tetramethylethylenediamine, N ' -tetramethyl-1, 3-propanediamine, N ' -tetramethyl-1, 4-butanediamine, N ' -tetramethyl-1, 5-pentanediamine, N ' -tetramethyl-1, 6-hexanediamine; the catalyst is at least one of iodine and iodine bromide; the halogenated alcohol is at least one of 2-chloroethanol, 3-chloropropanol, 2-bromoethanol, 3-bromopropanol, 4-chloro-1-butanol and 4-bromo-1-butanol.

Technical Field

The invention relates to a divisional application of a durable antibacterial easy-dyeing hydrophilic polyester fiber fabric and a preparation method thereof, wherein the application date is 2018, 4 months and 4 days, and the application number is 201810301257.9. The invention belongs to the technical field of polyester fiber fabrics, and relates to a durable antibacterial easy-dyeing hydrophilic polyester fiber fabric.

Background

The polyester fiber is a synthetic fiber obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol. The polyester fiber produced in large scale is made of polyethylene terephthalate, and the Chinese trade name is terylene. The polyester fiber has the advantages of high strength, high modulus, good elasticity and light resistance, good dimensional stability, easy washing and quick drying, and the like, and is a popular textile material.

But because the molecular structure of the polyester is arranged regularly, the crystallinity is high, the modulus is large, the polar functional group is lacked, the moisture absorption of the fiber is poor, the moisture regain of the fiber is only 0.4 percent under the standard environment, and the moisture regain of the natural fiber cotton reaches 7.5 percent; the conventional polyester fiber dyeing needs to be carried out under the conditions of high temperature and high pressure of 130 ℃, and a large amount of energy is consumed; the polyester fiber also has the problems of easy generation of bacteria and the like; the problems of poor hygroscopicity and dyeing property of polyester fibers, easy generation of bacteria and the like restrict further development of polyester technology in many occasions. Researchers are always striving to pursue the goal of preparing a fiber which has the advantages of moisture absorption performance, quick drying performance, softness performance and the like and simultaneously has the excellent mechanical properties of polyester fiber.

For example, chinese patent CN201410037950.1 relates to a method for preparing highly hydrophilic dyeable polyester fiber, which can be widely used for preparing moisture-absorbing sweat-releasing antistatic fiber; chinese patent CN201510866954.5 provides a mesoporous zirconium phosphate loaded nano-silver antibacterial polyester fiber which has the characteristic of lasting antibacterial effect. But the performance of the two is single.

Disclosure of Invention

In order to overcome the defects and shortcomings of the prior art, the invention provides a durable antibacterial easy-to-dye hydrophilic polyester fiber fabric and a preparation method thereof.

A dyeable hydrophilic polyester fiber fabric with lasting antibacterial property adopts biquaternary ammonium salt modified monomers as hydrophilic and antibacterial monomers, and a main chain of polyester fiber molecules contains a large amount of quaternary ammonium salt groups; 1, 4-dihydroxy butane-2-sodium sulfonate is adopted as a chromophil anion modified monomer, and a sulfonate anion group is positioned on a branched chain of the polyester fiber.

The preparation method of the durable antibacterial easy-to-dye hydrophilic polyester fiber fabric comprises the following steps:

sequentially adding a biquaternary ammonium salt modified dihydric alcohol monomer, ethylene glycol, terephthalic acid, a polycondensation catalyst, a heat stabilizer and an antioxidant into a reactor, stirring and pulping, and heating to 230-250 ℃ for reaction; and then adding an easily-dyed anionic monomer into the reactor, heating to continue reaction, cooling, slicing, drawing to obtain easily-dyed hydrophilic quaternary ammonium salt modified polyester fiber, and knitting to obtain the durable antibacterial easily-dyed hydrophilic polyester fiber fabric.

Furthermore, the preparation method of the durable antibacterial easy-to-dye hydrophilic polyester fiber fabric comprises the following steps in parts by weight:

sequentially adding 20-25 parts of biquaternary ammonium salt modified dihydric alcohol monomer, 25-28 parts of ethylene glycol, 130-150 parts of terephthalic acid, 0.1-0.5 part of polycondensation catalyst, 0.01-0.03 part of heat stabilizer and 0.01-0.03 part of antioxidant into a reactor provided with a stirrer and a heating device, stirring and pulping at normal temperature, heating to 230-250 ℃ after pulping, and reacting for 2-3 hours; and then adding 1.5-3 parts of easily-dyed anionic monomer into the reactor, heating to 240-260 ℃, reacting for 1-2 hours, heating to 265-280 ℃, continuing to react for 3-5 hours, cooling, slicing, drawing to obtain easily-dyed hydrophilic quaternary ammonium salt modified polyester fibers, and knitting to obtain the durable antibacterial easily-dyed hydrophilic polyester fiber fabric.

The polycondensation catalyst is at least one of ethylene glycol titanium, antimony trioxide and antimony acetate.

The heat stabilizer is at least one of trimethyl phosphate and tris (nonylphenyl) phosphite.

The antioxidant is at least one of a basf antioxidant 1010, a basf antioxidant B900 and tris (2, 4-di-tert-butylphenyl) phosphite.

The chromophil anion monomer is 1, 4-dihydroxy butane-2-sodium sulfonate.

The molecular structural formula of the biquaternary ammonium salt modified dihydric alcohol monomer (in the formula, m is 1-3, n is 1-5, and X is Cl (chlorine) or Br (bromine)) is as follows:

the preparation method of the biquaternary ammonium salt modified dihydric alcohol monomer comprises the following steps:

sequentially adding 1-1.2 mol of dibasic tertiary amine, 0.001-0.002 mol of catalyst and 1-2 mol of ethyl acetate into a reactor provided with a stirrer, a heating device and a liquid dropping device, heating to 80-120 ℃, then slowly dropping 2mol of halohydrin into the reactor through the liquid dropping device, continuing stirring and reacting for 2-3 hours after dropping for 1-2 hours, then cooling to room temperature, removing ethyl acetate and unreacted monomers through reduced pressure distillation to obtain a crude product of the biquaternary ammonium salt monomer, and washing the crude product of the biquaternary ammonium salt monomer with ethyl ether and drying in vacuum to obtain the biquaternary ammonium salt modified dihydric alcohol monomer.

The dibasic tertiary amine is at least one of N, N ' -tetramethyl ethylenediamine, N ' -tetramethyl-1, 3-propane diamine, N ' -tetramethyl-1, 4-butane diamine, N ' -tetramethyl-1, 5-pentane diamine and N, N ' -tetramethyl-1, 6-hexane diamine; the catalyst is at least one of iodine and iodine bromide; the halogenated alcohol is at least one of 2-chloroethanol, 3-chloropropanol, 2-bromoethanol, 3-bromopropanol, 4-chloro-1-butanol and 4-bromo-1-butanol.

The durable antibacterial easy-to-dye hydrophilic polyester fiber fabric has the following advantages: (1) modified dihydric alcohol (biquaternary ammonium salt modified dihydric alcohol monomer) containing biquaternary ammonium salt ions is synthesized and used as a monomer for the synthesis and modification of polyester fibers, so that the hydrophilic property and the lasting antibacterial property of the polyester fabric are improved (the quaternary ammonium salt ions are positioned in the molecular structure of the polyester); (2) 1, 4-dihydroxy butane-2-sodium sulfonate is used as a chromophil anion modified monomer, on one hand, the regularity of the original polyester structure is looser because the monomer contains a side group, and on the other hand, the original polyester molecular chain contains a sulfonic acid group, so that the monomer is easy to carry out ion exchange with a cation group in a cation pigment and is easier to dye; (3) the sulfonate anion group is positioned on the branched chain of the polyester fiber and is cooperated with the quaternary ammonium salt ion, so that the hydrophilicity of the polyester fiber fabric is greatly improved, and the antistatic property and the stain resistance of the polyester fiber fabric are further improved.

Detailed Description

The durable antibacterial easy-dyeing hydrophilic polyester fiber fabric and the preparation method thereof are further described with reference to the following examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention.