CN113802240B - Preparation process of grey cloth - Google Patents
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- CN113802240B CN113802240B CN202111180782.8A CN202111180782A CN113802240B CN 113802240 B CN113802240 B CN 113802240B CN 202111180782 A CN202111180782 A CN 202111180782A CN 113802240 B CN113802240 B CN 113802240B
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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
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/676—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
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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
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
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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
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/13—Physical properties anti-allergenic or anti-bacterial
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/22—Physical properties protective against sunlight or UV radiation
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- Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
Abstract
The application belongs to the technical field of cloth, and particularly relates to a preparation process of grey cloth, which comprises the following steps: weaving polyester fibers to obtain white grey cloth; the polyester fiber is an anti-ultraviolet modified polyester fiber. According to the preparation process of the grey cloth, the anti-ultraviolet modified polyester fibers are adopted for weaving to obtain the grey cloth, the grey cloth can be subjected to post-treatment such as dyeing and the like according to specific fabric requirements, the anti-ultraviolet modification is directly performed on the polyester fibers, the anti-ultraviolet modification is not performed in a physical attachment mode, the anti-ultraviolet effect of the prepared grey cloth cannot be attenuated or even disappear due to external force such as washing, and the prepared grey cloth has a long-term anti-ultraviolet effect.
Description
Technical Field
The application belongs to the technical field of cloth, and particularly relates to a preparation process of grey cloth.
Background
A blank is a blank woven with no dyed yarns. The grey fabric comprises pure woven fabric, blended fabric and interwoven fabric. The grey cloth may be used in fields with different requirements after dyeing and post-treatment.
With the development of science and technology and economy, the self-protection consciousness of people is strengthened, the requirements on the garment fabric are higher and higher, and the fabric with the ultraviolet resistance function is more and more applied to the garment field. The common existing anti-ultraviolet treatment mode is to attach an anti-ultraviolet solution to the surface of the fabric in a physical mode, and although the fabric with a certain anti-ultraviolet effect can be obtained in the mode, after the fabric is washed, anti-ultraviolet components attached in the physical mode are easily washed away, so that the anti-ultraviolet effect is lost.
Chinese patent document CN 112144276A discloses a preparation method of an ultraviolet-resistant cotton fabric, which comprises the steps of firstly soaking the cotton fabric in chitosan and citric acid solution, drying, then soaking in tea polyphenol solution, and drying to obtain the cotton fabric with the ultraviolet-resistant effect. However, the uvioresistant cotton fabric obtained by the physical attachment mode has limited uvioresistant effect, the uvioresistant performance of the fabric is gradually weakened after the fabric is washed, and the uvioresistant effect disappears after the fabric is washed for many times.
In view of the above, there is a need for developing a grey cloth having a long ultraviolet resistance effect, which is not affected by external force such as washing, and can always provide effective ultraviolet protection for users.
Disclosure of Invention
In order to solve the problems, the application discloses a process for preparing grey cloth, wherein the grey cloth is obtained by weaving anti-ultraviolet modified polyester fibers, and because the anti-ultraviolet modification is directly carried out on the fibers instead of the anti-ultraviolet modification in a physical attachment mode, the anti-ultraviolet effect of the grey cloth cannot be attenuated due to external force such as washing, and the prepared grey cloth has a long-term anti-ultraviolet effect.
The application provides a preparation process of grey cloth, which adopts the following technical scheme:
a preparation process of grey cloth comprises the following steps: weaving polyester fibers to obtain white grey cloth; the polyester fiber is an anti-ultraviolet modified polyester fiber.
Preferably, the anti-ultraviolet modified polyester fiber comprises the following components in parts by weight: 90-110 parts of uvioresistant modified polyester, 0.5-2 parts of lubricant, 0.1-2 parts of dispersant and 3-8 parts of chitosan.
Preferably, the anti-ultraviolet modified polyester is polymerized by terephthalic acid, ethylene glycol and an anti-ultraviolet monomer, and the structural formula of the anti-ultraviolet modified polyester is as follows:
and/or
The preparation method of the uvioresistant modified polyester comprises the following steps: adding terephthalic acid, ethylene glycol and an anti-ultraviolet monomer into a prepolymerization kettle, heating to about 230 ℃ under stirring, adjusting the pressure in the kettle to 0.7MPa, and carrying out esterification reaction for 40min to obtain a polyester oligomer; and transferring the polyester oligomer into a polymerization kettle, adjusting the temperature to 250 ℃, and the pressure to 1.0MPa, and carrying out polymerization reaction for 4 hours to obtain the anti-ultraviolet modified polyester, wherein the molar ratio of terephthalic acid, ethylene glycol and anti-ultraviolet monomer is 1:1-1.5: 0.01-0.03.
Preferably, the structural formula of the ultraviolet resistant monomer is:
and/or
The preparation method of the anti-ultraviolet monomer comprises the following steps:
(1) adding benzoyl chloride and chlorobenzene into a reaction kettle under the condition of ice-water bath at 0 ℃, adding anhydrous aluminum trichloride, slowly adding 1-methoxy-3-ethyleneoxy benzene into the reaction kettle while stirring until the anhydrous aluminum trichloride is dissolved, and stirring for reacting for 1h to obtain a product A, wherein the molar ratio of the benzoyl chloride to the 1-methoxy-3-ethyleneoxy benzene is 1:1, the anhydrous aluminum trichloride is 2% of the total mass of reactants, the chlorobenzene is 10% of the total mass of the reactants, and the reaction equation is as follows:
(2) adding the product A and a proper amount of solid phosphoric acid catalyst into a reaction kettle, stirring, heating, melting, heating to 220 ℃, slowly dropwise adding 3, 4-butylene glycol (the molar ratio of the product A to the 3, 4-butylene glycol is 1:1.1-1.5), controlling the reaction pressure at 5MPa, and continuously reacting for 0.5h after the dropwise adding is finished to obtain a mixture, wherein the reaction equation is as follows:
(3) hydrolyzing the mixture obtained in the step (2) under an acidic condition, distilling the hydrolysate under reduced pressure to recover unreacted 3, 4-butylene glycol, cooling to 70-80 ℃, adding activated carbon and ethanol, stirring for half an hour, filtering while hot, removing the activated carbon, concentrating the filtrate, recovering the ethanol, cooling, crystallizing, centrifugally separating, drying the crystallized product to obtain the anti-ultraviolet monomer, wherein the reaction equation is as follows:
preferably, the lubricant is one or more of polyethylene wax, zinc stearate and calcium stearate.
Preferably, the dispersant is polyvinylpyrrolidone.
Preferably, the preparation method of the anti-ultraviolet modified polyester fiber comprises the following steps:
(1) adding the uvioresistant modified polyester, the lubricant, the dispersant and the chitosan into an extruder, and carrying out melt blending extrusion to obtain polyester master batches;
(2) and carrying out melt spinning on the polyester master batch to obtain the anti-ultraviolet modified polyester fiber.
Preferably, the extruder used in the step (1) is a twin-screw extruder, the rotation speed of the main machine is 700-.
Preferably, the extrusion temperature in the step (1) is 270-.
Preferably, the melt spinning temperature in the step (2) is 280-.
The application has the following beneficial effects:
(1) according to the preparation process of the grey cloth, the anti-ultraviolet modified polyester fibers are adopted for weaving to obtain the grey cloth, the fibers are directly subjected to anti-ultraviolet modification, and the anti-ultraviolet modification is not carried out in a physical attachment mode, so that the anti-ultraviolet effect of the grey cloth cannot be attenuated due to external force such as washing, and the prepared grey cloth has a long-term anti-ultraviolet effect.
(2) Chitosan is added into the anti-ultraviolet modified polyester fiber, so that the obtained anti-ultraviolet modified polyester fiber has a certain antibacterial effect, and the obtained grey cloth has a certain antibacterial effect;
(3) the ultraviolet-resistant monomer is polymerized in the ultraviolet-resistant modified polyester for preparing the ultraviolet-resistant modified polyester fiber, the ultraviolet-resistant monomer contains an ultraviolet absorbent UV-9 structure, a good ultraviolet-resistant effect can be achieved, the structure exists in a polyester chain segment in a polymerization mode, precipitation and migration cannot occur, and the ultraviolet-resistant effect can be exerted for a long time.
Detailed Description
The present application will now be described in further detail with reference to examples.
The preparation method of the uvioresistant modified polyester comprises the following steps: adding terephthalic acid, ethylene glycol and an anti-ultraviolet monomer into a prepolymerization kettle, heating to about 230 ℃ under stirring, adjusting the pressure in the kettle to 0.7MPa, and carrying out esterification reaction for 40min to obtain a polyester oligomer; and transferring the polyester oligomer into a polymerization kettle, adjusting the temperature to 250 ℃, and the pressure to 1.0MPa, and carrying out polymerization reaction for 4 hours to obtain the anti-ultraviolet modified polyester, wherein the molar ratio of terephthalic acid, ethylene glycol and anti-ultraviolet monomer is 1:1.2: 0.02.
The preparation method of the common polyester comprises the following steps: adding terephthalic acid and ethylene glycol into a prepolymerization kettle, heating to about 230 ℃ under stirring, adjusting the pressure in the kettle to 0.7MPa, and carrying out esterification reaction for 40min to obtain a polyester oligomer; and transferring the polyester oligomer into a polymerization kettle, adjusting the temperature to 250 ℃ and the pressure to 1.0MPa, and carrying out polymerization reaction for 4 hours to obtain the common polyester, wherein the molar ratio of terephthalic acid to ethylene glycol is 1: 1.2.
Example 1
The component proportion of the uvioresistant modified polyester fiber is as follows: 90 parts of ultraviolet-resistant modified polyester, 0.5 part of polyethylene wax, 0.1 part of polyvinylpyrrolidone and 3 parts of chitosan.
Preparing the anti-ultraviolet modified polyester fiber:
(1) adding the uvioresistant modified polyester, polyethylene wax, polyvinylpyrrolidone and chitosan into an extruder, and carrying out melt blending extrusion to obtain polyester master batches; wherein the rotating speed of a main machine of the double-screw extruder is 700r/min, the feeding rotating speed is 500r/min, the granulating rotating speed is 1100r/min, the extrusion temperature is 270 ℃, and the extrusion pressure is 8 MPa;
(2) and carrying out melt spinning on the polyester master batch to obtain the uvioresistant modified polyester fiber, wherein the melt spinning temperature is 280 ℃, the circular blowing temperature is 25 ℃, the circular blowing speed is 0.3m/s, the winding spinning speed is 3000m/min, and the drafting multiple is 3.5 times.
Preparing white gray fabric: and weaving the obtained anti-ultraviolet modified polyester fiber to obtain the grey cloth.
Example 2
The component proportion of the uvioresistant modified polyester fiber is as follows: 95 parts of ultraviolet-resistant modified polyester, 0.8 part of calcium stearate, 0.5 part of polyvinylpyrrolidone and 4 parts of chitosan.
Preparing the anti-ultraviolet modified polyester fiber:
(1) adding the uvioresistant modified polyester, calcium stearate, polyvinylpyrrolidone and chitosan into an extruder, and performing melt blending extrusion to obtain polyester master batches; wherein the rotating speed of a main machine of the double-screw extruder is 750r/min, the feeding rotating speed is 530r/min, the granulating rotating speed is 1150r/min, the extrusion temperature is 275 ℃, and the extrusion pressure is 7.5 MPa;
(2) and carrying out melt spinning on the polyester master batch to obtain the uvioresistant modified polyester fiber, wherein the melt spinning temperature is 285 ℃, the circular blowing temperature is 28 ℃, the circular blowing speed is 0.4m/s, the winding spinning speed is 3100m/min, and the drafting multiple is 3.8 times.
Preparing a grey cloth: and weaving the obtained anti-ultraviolet modified polyester fiber to obtain the grey cloth.
Example 3
The component proportion of the uvioresistant modified polyester fiber is as follows: 110 parts of ultraviolet-resistant modified polyester, 2 parts of zinc stearate, 2 parts of polyvinylpyrrolidone and 8 parts of chitosan.
Preparing the anti-ultraviolet modified polyester fiber:
(1) adding the uvioresistant modified polyester, zinc stearate, polyvinylpyrrolidone and chitosan into an extruder, and carrying out melt blending extrusion to obtain polyester master batches; wherein the rotating speed of a main machine of the double-screw extruder is 900r/min, the feeding rotating speed is 600r/min, the granulating rotating speed is 1200r/min, the extrusion temperature is 300 ℃, and the extrusion pressure is 6 MPa;
(2) and carrying out melt spinning on the polyester master batch to obtain the uvioresistant modified polyester fiber, wherein the melt spinning temperature is 290 ℃, the circular blowing temperature is 30 ℃, the circular blowing speed is 0.5m/s, the winding spinning speed is 3500m/min, and the drafting multiple is 4.5 times.
Preparing white gray fabric: and weaving the obtained anti-ultraviolet modified polyester fiber to obtain the grey cloth.
Example 4
The component proportion of the uvioresistant modified polyester fiber is as follows: 105 parts of ultraviolet-resistant modified polyester, 1.6 parts of zinc stearate, 1.5 parts of polyvinylpyrrolidone and 7 parts of chitosan.
Preparing the anti-ultraviolet modified polyester fiber:
(1) adding the uvioresistant modified polyester, zinc stearate, polyvinylpyrrolidone and chitosan into an extruder, and carrying out melt blending extrusion to obtain polyester master batches; wherein the rotating speed of a main machine of the double-screw extruder is 850r/min, the feeding rotating speed is 580r/min, the granulating rotating speed is 1180r/min, the extrusion temperature is 290 ℃, and the extrusion pressure is 6.5 MPa;
(2) and carrying out melt spinning on the polyester master batch to obtain the uvioresistant modified polyester fiber, wherein the melt spinning temperature is 285 ℃, the circular blowing temperature is 30 ℃, the circular blowing speed is 0.3m/s, the winding spinning speed is 3000m/min, and the drafting multiple is 4.2 times.
Preparing white gray fabric: and weaving the obtained anti-ultraviolet modified polyester fiber to obtain the grey cloth.
Example 5
The component proportion of the uvioresistant modified polyester fiber is as follows: 100 parts of ultraviolet-resistant modified polyester, 1.2 parts of polyethylene wax, 1 part of polyvinylpyrrolidone and 6 parts of chitosan.
Preparing the anti-ultraviolet modified polyester fiber:
(1) adding the uvioresistant modified polyester, polyethylene wax, polyvinylpyrrolidone and chitosan into an extruder, and carrying out melt blending extrusion to obtain polyester master batches; wherein the rotating speed of a main machine of the double-screw extruder is 800r/min, the feeding rotating speed is 550r/min, the granulating rotating speed is 1150r/min, the extrusion temperature is 285 ℃, and the extrusion pressure is 7 MPa;
(2) and carrying out melt spinning on the polyester master batch to obtain the uvioresistant modified polyester fiber, wherein the melt spinning temperature is 285 ℃, the circular blowing temperature is 28 ℃, the circular blowing speed is 0.4m/s, the winding spinning speed is 3300m/min, and the drafting multiple is 4 times.
Preparing white gray fabric: and weaving the obtained anti-ultraviolet modified polyester fiber to obtain the grey cloth.
Comparative example 1
The component proportion of the common polyester fiber is as follows: 100 parts of common polyester, 1.2 parts of polyethylene wax, 1 part of polyvinylpyrrolidone and 6 parts of chitosan.
Preparing common polyester fibers:
(1) adding common polyester, polyethylene wax, polyvinylpyrrolidone and chitosan into an extruder, and performing melt blending extrusion to obtain polyester master batch; wherein the rotating speed of a main machine of the double-screw extruder is 800r/min, the feeding rotating speed is 550r/min, the granulating rotating speed is 1150r/min, the extrusion temperature is 285 ℃, and the extrusion pressure is 7 MPa;
(2) and carrying out melt spinning on the polyester master batch to obtain the uvioresistant modified polyester fiber, wherein the melt spinning temperature is 285 ℃, the circular blowing temperature is 28 ℃, the circular blowing speed is 0.4m/s, the winding spinning speed is 3300m/min, and the drafting multiple is 4 times.
Preparing white gray fabric: and weaving the obtained common polyester fibers to obtain the grey cloth.
Comparative example 2
The component proportion of the common polyester fiber is as follows: 97.2 parts of common polyester, 2.8 parts of ultraviolet absorbent UV-9, 1.2 parts of polyethylene wax, 1 part of polyvinylpyrrolidone and 6 parts of chitosan.
Preparing common polyester fibers:
(1) adding common polyester, ultraviolet absorbent UV-9, polyethylene wax, polyvinylpyrrolidone and chitosan into an extruder, and performing melt blending extrusion to obtain polyester master batch; wherein the rotating speed of a main machine of the double-screw extruder is 800r/min, the feeding rotating speed is 550r/min, the granulating rotating speed is 1150r/min, the extrusion temperature is 285 ℃, and the extrusion pressure is 7 MPa;
(2) and carrying out melt spinning on the polyester master batch to obtain the uvioresistant modified polyester fiber, wherein the melt spinning temperature is 285 ℃, the circular blowing temperature is 28 ℃, the circular blowing speed is 0.4m/s, the winding spinning speed is 3300m/min, and the drafting multiple is 4 times.
Preparing white gray fabric: and weaving the obtained common polyester fibers to obtain the grey cloth.
Comparative example 3
The component proportion of the common polyester fiber is as follows: 100 parts of common polyester, 1.2 parts of polyethylene wax, 1 part of polyvinylpyrrolidone and 6 parts of chitosan.
Preparing common polyester fibers:
(1) adding common polyester, polyethylene wax, polyvinylpyrrolidone and chitosan into an extruder, and performing melt blending extrusion to obtain polyester master batch; wherein the rotating speed of a main machine of the double-screw extruder is 800r/min, the feeding rotating speed is 550r/min, the granulating rotating speed is 1150r/min, the extrusion temperature is 285 ℃, and the extrusion pressure is 7 MPa;
(2) and carrying out melt spinning on the polyester master batch to obtain the uvioresistant modified polyester fiber, wherein the melt spinning temperature is 285 ℃, the circular blowing temperature is 28 ℃, the circular blowing speed is 0.4m/s, the winding spinning speed is 3300m/min, and the drafting multiple is 4 times.
Preparing white gray fabric: and weaving the obtained common polyester fibers to obtain the grey cloth to be treated. And (3) soaking the grey cloth to be treated in an ethanol solution of an ultraviolet absorbent UV-9, wherein the mass percent of the ultraviolet absorbent UV-9 is 30%, and drying after soaking to obtain the grey cloth.
The gray fabrics obtained in examples 1-5 and comparative examples 1-2 were tested for UV resistance, and the test results are shown in Table 1, with reference to GB/T18830-2002 evaluation of UV resistance for textiles.
TABLE 1
| Item | Initial UPF | UPF after 50 washes | UPF after 100 washes |
| Example 1 | 52.3 | 52.2 | 52.2 |
| Example 2 | 51.8 | 51.8 | 51.8 |
| Example 3 | 49.2 | 49.2 | 49.1 |
| Example 4 | 49.6 | 49.5 | 49.5 |
| Example 5 | 51.1 | 51.1 | 51.0 |
| Comparative example 1 | 27.5 | 27.4 | 27.4 |
| Comparative example 2 | 49.8 | 48.5 | 40.6 |
| Comparative example 3 | 52.7 | 33.6 | 27.6 |
As can be seen from table 1, the gray fabric prepared in examples 1 to 5 of the present application has a good anti-ultraviolet effect, and not only has a good initial anti-ultraviolet effect, but also has an anti-ultraviolet effect which is substantially unchanged after being washed with water for 50 times and 100 times, which indicates that the washing does not affect the anti-ultraviolet effect of the gray fabric, and thus, the gray fabric can have a long anti-ultraviolet performance. In contrast, as can be seen from comparative example 1, when a gray fabric is obtained by weaving polyester fibers made of general polyester, the obtained gray fabric has poor ultraviolet resistance. It can be seen from comparative example 2 that, when the ultraviolet absorbent UV-9 is added to the raw material for preparing the polyester fiber by melt blending, although the obtained grey cloth has relatively good initial ultraviolet resistance (blending may have the problem of uneven dispersion, so that the initial UPF of comparative example 2 is slightly lower than that of example 5), and the relatively high ultraviolet resistance can be maintained after washing for 50 times, the ultraviolet resistance after washing for 100 times is obviously reduced, and the ultraviolet resistance is possibly affected due to the migration, precipitation and the like of the small molecular ultraviolet absorbent UV-9. As can be seen from comparative example 3, when the ultraviolet resistance of the grey cloth is improved by adopting the mode of treatment after soaking in the ultraviolet absorbent solution, although a higher initial ultraviolet resistance effect is obtained, the ultraviolet resistance of the grey cloth is increasingly poor along with the increase of the washing times, the UPF value is reduced to 33.6 after 50 times of washing, and is greatly reduced to 27.6 after 100 times of washing, which is basically equivalent to that of the grey cloth without ultraviolet resistance treatment, and the ultraviolet absorbent physically attached to the surface of the grey cloth in the following treatment mode is easy to be desorbed in the washing process, so that the ultraviolet resistance effect of the grey cloth is lost.
The present embodiment is merely illustrative and not restrictive, and various changes and modifications may be made by persons skilled in the art without departing from the scope of the present invention as defined in the appended claims. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A preparation process of white gray fabric is characterized by comprising the following steps: the method comprises the following steps: weaving polyester fibers to obtain white grey cloth; the polyester fiber is an anti-ultraviolet modified polyester fiber;
the anti-ultraviolet modified polyester fiber comprises the following components in parts by weight: 90-110 parts of anti-ultraviolet modified polyester, 0.5-2 parts of lubricant, 0.1-2 parts of dispersant and 3-8 parts of chitosan;
the ultraviolet-resistant modified polyester is prepared by polymerizing terephthalic acid, ethylene glycol and an ultraviolet-resistant monomer, and the structural formula of the ultraviolet-resistant modified polyester is as follows:
the structural formula of the ultraviolet-resistant monomer is as follows:
the preparation method of the anti-ultraviolet monomer comprises the following steps:
(1) adding benzoyl chloride and chlorobenzene into a reaction kettle under the condition of ice-water bath at 0 ℃, adding anhydrous aluminum trichloride until the anhydrous aluminum trichloride is dissolved, slowly adding 1-methoxy-3-ethyleneoxy benzene into the reaction kettle while stirring, and stirring for reacting for 1h to obtain a product A, wherein the molar ratio of the benzoyl chloride to the 1-methoxy-3-ethyleneoxy benzene is 1:1, the anhydrous aluminum trichloride accounts for 2% of the total mass of reactants, and the chlorobenzene accounts for 10% of the total mass of the reactants;
(2) adding the product A and a proper amount of solid phosphoric acid catalyst into a reaction kettle, stirring, heating, melting, heating to 220 ℃, slowly dropwise adding 3, 4-butylene glycol, controlling the molar ratio of the product A to the 3, 4-butylene glycol at 1:1.1-1.5, controlling the reaction pressure at 5MPa, and continuing to react for 0.5h after the dropwise adding is finished;
(3) hydrolyzing the mixture obtained in the step (2) under an acidic condition, distilling the hydrolysate under reduced pressure to recover unreacted 3, 4-butylene glycol, cooling to 70-80 ℃, adding activated carbon and ethanol, stirring for half an hour, filtering while hot, removing the activated carbon, concentrating the filtrate, recovering the ethanol, cooling, crystallizing, centrifugally separating, and drying the crystallized product to obtain the anti-ultraviolet monomer.
2. The process for preparing a gray fabric according to claim 1, wherein: the lubricant is one or more of polyethylene wax, zinc stearate and calcium stearate.
3. The process for preparing a gray fabric according to claim 1, wherein: the dispersing agent is polyvinylpyrrolidone.
4. The process for preparing a gray fabric according to claim 1, wherein: the preparation method of the anti-ultraviolet modified polyester fiber comprises the following steps:
(1) adding the uvioresistant modified polyester, the lubricant, the dispersant and the chitosan into an extruder, and carrying out melt blending extrusion to obtain polyester master batches;
(2) and carrying out melt spinning on the polyester master batch to obtain the anti-ultraviolet modified polyester fiber.
5. The process for preparing a gray fabric according to claim 4, wherein: the extruder used in the step (1) is a double-screw extruder, the rotating speed of the main machine is 700-900r/min, the feeding rotating speed is 500-600r/min, and the pelletizing rotating speed is 1100-1200 r/min.
6. The process for preparing a gray fabric according to claim 4, wherein: the extrusion temperature in the step (1) is 270-300 ℃, and the extrusion pressure is 6-8 MPa.
7. The process for preparing a gray fabric according to claim 4, wherein: the melt spinning temperature in the step (2) is 280-290 ℃, the circular blowing temperature is 25-30 ℃, the circular blowing speed is 0.3-0.5m/s, the winding spinning speed is 3000-3500m/min, and the draft multiple is 3.5-4.5.
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| CN113802240B true CN113802240B (en) | 2022-06-10 |
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| CN102560731A (en) * | 2011-07-28 | 2012-07-11 | 吴江三辉纺织有限公司 | Anti-ultraviolet and moisture transmitting polyster fibers as well as preparation method and application thereof |
| CN102995223B (en) * | 2012-12-04 | 2013-12-25 | 杭州蚕速服饰有限公司 | Manufacturing method of ultraviolet-proof shell fabric |
| CN104963028B (en) * | 2015-07-01 | 2017-04-26 | 义乌市惠航化纤科技有限公司 | Antibacterial polyester fibers and preparation method for same |
| CN105088389A (en) * | 2015-08-17 | 2015-11-25 | 俞尧芳 | Anti-ultraviolet polyester fibers and preparation method thereof |
| CN111058154B (en) * | 2019-12-30 | 2021-07-20 | 杭州华利实业集团有限公司 | Light-resistant anti-aging high-speed rail seat cover and manufacturing method thereof |
| CN111534881A (en) * | 2020-04-23 | 2020-08-14 | 张为凤 | Uvioresistant polyester filament yarn and production method thereof |
| CN113265720A (en) * | 2021-05-17 | 2021-08-17 | 福建师范大学泉港石化研究院 | Polyester fiber with uvioresistant performance and preparation method thereof |
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