CN114381955B - Inorganic pigment dyeing method for polyester textile - Google Patents
Inorganic pigment dyeing method for polyester textile Download PDFInfo
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- CN114381955B CN114381955B CN202210032724.9A CN202210032724A CN114381955B CN 114381955 B CN114381955 B CN 114381955B CN 202210032724 A CN202210032724 A CN 202210032724A CN 114381955 B CN114381955 B CN 114381955B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/34—Material containing ester groups
- D06P3/52—Polyesters
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/46—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing natural macromolecular substances or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/22—Effecting variation of dye affinity on textile material by chemical means that react with the fibre
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention provides an inorganic pigment dyeing method of terylene textile, which comprises the following steps: soaking the polyester fabric in a chitosan solution with the weight percent of 0.5-10% to obtain a pretreated polyester fabric; uniformly dispersing the nano inorganic pigment in acetone, adding a silane coupling agent, stirring, filtering, cleaning, drying and grinding to obtain a modified nano inorganic pigment; dissolving the obtained modified nano inorganic pigment, adding the obtained modified nano inorganic pigment to obtain a pretreated polyester fabric, carrying out ultrasonic treatment and drying to obtain a coupled polyester fabric; and (3) placing the obtained coupled polyester fabric into an oil bath at 120-250 ℃ for reaction to obtain the dyed polyester fabric. According to the invention, the chitosan pretreatment process and the high-temperature oil bath dyeing process are combined, so that the polyester fabric and chitosan are chemically crosslinked, the structures of chitosan and polyester are changed at high temperature, and the obtained polyester fabric has good dyeing effect, high color fastness and uniform color.
Description
Technical Field
The invention relates to the technical field of fabric dyeing, in particular to an inorganic pigment dyeing method for terylene textiles.
Background
The silk, wool and other fabrics are cumbersome to maintain, and are easy to deform at high temperature, so that the use of the silk, wool and other fabrics is greatly limited. The terylene is widely applied to the fields of clothing, curtains, bedclothes and the like by virtue of the advantages of high elasticity, high strength, wear resistance, corrosion resistance and the like.
The main component of terylene is polyethylene terephthalate, which belongs to hydrophobic fiber, and the molecule lacks active group which can combine with dye, so that the dyeing of terylene is difficult.
The dyeing of the terylene is mainly carried out by disperse dye under the influence of the hydrophobicity and compact structure of the terylene, and the dyeing method generally comprises the following steps: (1) A hot melt dyeing method, namely a dyeing method that dye molecules are rapidly diffused into polyester fabrics under the high-temperature dry state condition; the dye of the method needs to have higher sublimation fastness, has large dye limitation degree, is less in applicable dye, and has lighter color. (2) High-temperature pressurized dyeing, namely dyeing in a closed dyeing tank with the temperature higher than 100 ℃ and the pressure higher than one atmosphere; the method can use a large amount of auxiliary agents in the dyeing process, the dyeing process is complex, the requirement on dyeing equipment is high, and the dyeing cost is high. (3) The carrier dyeing method is to promote the activity of a macromolecular chain segment of an amorphous region through the introduction of a carrier, so that dye molecules are easy to diffuse into the polyester fabric, and dyeing is realized; the carrier used in the dyeing process of the method is toxic and harmful to human health, and causes environmental pollution. The dyeing methods consume a large amount of water resources in the whole process, and the generated dye liquor wastewater is not easy to treat, so that the resource waste and the environmental pollution are caused.
With the development of textile printing and dyeing science and technology, the nano dye is attracting more and more attention. The nano dye is a novel ecological dye with the particle size smaller than 100nm, excellent color fastness, good process performance and no selectivity to various fibers.
Patent application number CN201710290813.2 discloses a polyester dyeing method using nanometer lanthanum oxide, firstly, respectively preprocessing nanometer lanthanum oxide particles and polyester, then adopting a silane coupling agent to carry out coupling reaction on the preprocessed nanometer lanthanum oxide and polyester, finally preparing mixed solution of dye, acetic acid, dispersant NNO and methyl salicylate, and adopting a carrier method to dye the polyester after coupling processing. The method mainly depends on the coupling process, the overall dyeing rate is low, the dyeing steps are complicated, the used reagents are more, and a large amount of water resources are needed in the dyeing process.
In view of the foregoing, there is a need for an improved method for dyeing polyester textiles with inorganic pigments.
Disclosure of Invention
The invention aims to provide an inorganic pigment dyeing method for terylene textiles, which solves the problems of low dyeing rate, poor dyeing effect, uneven color, more used auxiliary agents, complex process, low dyeing rate and more water resource waste in the terylene dyeing process by utilizing nano particles.
In order to achieve the aim of the invention, the invention provides an inorganic pigment dyeing method of terylene textile, which comprises the following steps:
S1, pretreatment of polyester fabric: soaking 8-12g of polyester fabric in 0.5-10wt% chitosan solution, washing and drying to obtain pretreated polyester fabric;
S2, modifying the nano inorganic pigment: uniformly dispersing the nano inorganic pigment in acetone, adding a silane coupling agent accounting for 3% -5% of the volume of the acetone, stirring for 8-16h, and filtering, cleaning, drying and grinding to obtain a modified nano inorganic pigment;
S3, coupling: preparing the modified nano inorganic pigment obtained in the step S2 into a solution with the concentration of 2-4g/100mL, stirring, adding the pretreated polyester fabric obtained in the step S1, performing ultrasonic treatment and drying to obtain a coupled polyester fabric;
S4, high-temperature oil bath dyeing: and (3) placing the coupled polyester fabric obtained in the step (S3) in a constant-temperature oil bath at 120-250 ℃ for reaction to obtain the dyed polyester fabric.
As a further improvement of the invention, the temperature of the constant temperature oil bath is 140-220 ℃ and the reaction time is 5-60s.
As a further improvement of the invention, the components of the high-temperature oil bath are vegetable oil, silicone oil or alcohols.
As a further improvement of the present invention, the vegetable oil includes, but is not limited to, one or more of rapeseed oil, peanut oil, blend oil, olive oil, sesame oil, corn oil; the silicone oil includes but is not limited to methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen silicone oil, methyl phenyl silicone oil, methyl chlorophenyl silicone oil, methyl ethoxy silicone oil, methyl trifluoropropyl silicone oil, methyl vinyl silicone oil, methyl hydroxyl silicone oil, ethyl hydrogen silicone oil, hydroxyl hydrogen silicone oil and cyano silicone oil; the alcohol is polyethylene glycol.
As a further improvement of the present invention, the concentration of the chitosan solution in step S1 is 4wt% to 8wt%.
As a further improvement of the invention, the polyester fabric in the step S1 is pretreated by alkali liquor before being pretreated by chitosan, so that the active groups and the surface roughness of the polyester fabric are increased.
As a further improvement of the invention, the nano inorganic pigment in the step S2 is one or more of cobalt blue nano particles, titanium nickel yellow nano particles, ferrosilicon red nano particles, cobalt green nano particles, copper chromium black nano particles, titanium complex brown nano particles and ferrotitanium black nano particles.
As a further improvement of the present invention, the silane coupling agent in step S2 includes KH550, KH570, KH580; the drying is vacuum drying.
As a further improvement of the present invention, the solvent in which the modified nano inorganic pigment is dissolved in step S3 includes water, ethanol, acetone.
As a further improvement of the present invention, the method further comprises the steps of:
S5, dyeing post-treatment: and (3) putting the dyed polyester fabric obtained in the step (S4) into ethanol for washing and drying to obtain clean dyed polyester fabric.
The beneficial effects of the invention are as follows:
(1) According to the inorganic pigment dyeing method for the polyester textile, provided by the invention, the chitosan pretreatment process and the high-temperature oil bath dyeing process are combined, so that the polyester textile is chemically crosslinked with chitosan, the structures of the chitosan and the polyester are changed, the chitosan and the coupling agent connected with the nano particles are enabled to react more fully, and the obtained polyester textile has good dyeing effect and high color fastness; based on the high dispersibility of the nano particles, the color and luster of the polyester fabric are uniform.
(2) According to the inorganic pigment dyeing method for the polyester textile, the silane coupling agent is used for modifying the nano particles and then reacting with the polyester textile, so that incomplete coupling, uneven dyeing and the like caused by mixing the nano particles, the polyester textile and the silane coupling agent are avoided, and the color uniformity is further improved.
(3) According to the inorganic pigment dyeing method for the polyester textile, the polyester textile and the nano particles are modified, so that the silane coupling agent is combined together, and the reaction flow is simple; the traditional dye liquor and various auxiliary agents are not needed in the reaction process, the cost is low, and the method is green and pollution-free.
Drawings
Fig. 1 is a graph of a cobalt blue nanoparticle dyed polyester fabric prepared using the method of the present invention.
FIG. 2 is a graph of a titanium nickel nanoparticle dyed polyester fabric prepared by the method of the present invention.
FIG. 3 is a graph of a polyester fabric dyed with ilmenite nanoparticles prepared by the method of the present invention.
FIG. 4 is a graph of a titanium complex brown nanoparticle dyed polyester fabric prepared by the method of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to aspects of the present invention are shown in the drawings, and other details not greatly related to the present invention are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention provides an inorganic pigment dyeing method of terylene textile, which comprises the following steps:
S1, pretreatment of polyester fabric:
Immersing 8-12g of terylene fabric in 200mL of chitosan solution with the concentration of 0.5-10wt%, preferably 4-8wt%, at 30-45 ℃ for 15-45min to enable the chitosan solution to be fully and uniformly attached to the surface and the inside of the terylene fabric (increase the uniformity of dyeing), and then baking at 90-130 ℃ for 10-30min; washing the polyester fabric treated by the chitosan solution until the pH value of the washing residual liquid is neutral, and then drying at 60-80 ℃ to obtain the activated pretreated polyester fabric. The surface and the inside of the pretreated polyester fabric are combined with a large amount of high-activity chitosan, so that the activity of the polyester fabric is improved.
In some embodiments, the polyester fabric is firstly alkali treated and then treated with chitosan, and the alkali treatment method is more common and will not be described herein. The polyester fabric subjected to alkali treatment has the advantages that ester groups in polyester molecules are hydrolyzed, so that carboxyl and hydroxyl with higher activity are generated on the surface of the polyester fabric, the binding sites of the polyester fabric and chitosan are increased, in addition, the molecules on the surface of the polyester fabric are shed due to hydrolysis, the surface of the polyester fabric is etched, the specific surface area of the polyester fabric is increased, and the adhesive capacity of the surface is improved.
Because the chitosan molecule contains high-activity hydroxyl and amino, the polyester contains a large amount of ester groups (after alkali treatment, the polyester also contains hydroxyl and carboxyl), the high-activity hydroxyl and amino can form hydrogen bonds with the ester groups, the hydroxyl and the carboxyl of the polyester, and the amino and the carboxyl can react chemically to strengthen the combination of the chitosan and the polyester; in addition, the chitosan has strong adhesion and can be adhered to the surface of terylene.
S2, modifying the nano inorganic pigment:
Adding 8-12g of nano inorganic pigment into 80-120mL of acetone, stirring for 3-7min, enabling the nano particles to have better dispersibility, enabling the nano particles to be uniformly dispersed in the acetone, adding a silane coupling agent accounting for 3% -5% of the volume of the acetone (namely, the adding amount of the silane coupling agent is 3-10 mL), stirring for 8-16h, filtering, cleaning, drying and grinding to obtain the modified nano inorganic pigment.
The nanometer inorganic pigment is one or more of cobalt blue nanometer particles, titanium nickel yellow nanometer particles, ferrosilicon nanometer particles, cobalt green nanometer particles, copper chromium black nanometer particles, titanium complex brown nanometer particles and ferrotitanium black nanometer particles.
Wherein the cleaning is performed by cleaning with acetone for 3-5 times, and drying at 40-80deg.C under vacuum for 6-8 hr.
The silane coupling agent comprises KH550, KH570 and KH580. The silane coupling agent is used as an adhesive, and can interact with hydroxyl groups in inorganic matters and long molecular chains in organic polymers to couple inorganic materials and organic materials. In the process, the silane coupling agent spreads on the surface of the nano particle, alkoxy at one end of the molecule of the silane coupling agent is hydrolyzed to generate silicon hydroxyl, the silicon hydroxyl and the hydroxyl on the surface of the nano particle form hydrogen bond, and then hydrolysis condensation reaction is carried out, so that one end of the silane coupling agent is bonded with the nano particle. The nanoparticles are uniformly connected to the surface of the silane coupling agent based on the high dispersibility of the nanoparticles.
S3, coupling:
And (2) dissolving the modified nano inorganic pigment obtained in the step (S2) in water, ethanol or acetone to prepare a solution with the concentration of 2-4g/100mL, stirring for 30min, adding 8-12g of the modified nano inorganic pigment obtained in the step (S1) to obtain the pretreated polyester fabric, carrying out ultrasonic vibration treatment for 30-60min, and drying to obtain the coupled polyester fabric.
The other end of the silane coupling agent is subjected to surface cross-linking and curing with the chitosan (containing active groups such as hydroxyl and amino) with higher activity, so that chemical bonding or adhesion on the polyester fabric through hydrogen bonds and the like is realized, and the mechanical property of the polyester fabric is improved.
S4, high-temperature oil bath dyeing:
and (3) placing the coupled polyester fabric obtained in the step (S3) in a constant-temperature oil bath at 120-250 ℃ for reaction for 5-60S, wherein the temperature of the constant-temperature oil bath is preferably 140-220 ℃, and obtaining the dyed polyester fabric.
After the coupled polyester fabric obtained in the step S3 enters a high-temperature oil bath, the combination mode of C=O in polyester molecules and the amino action of chitosan and chitosan to form C=N is changed, and chemical crosslinking is also present besides hydrogen bonding. In addition, the amorphous regions of the terylene are subjected to intense movement at high temperature, pores are formed on the surface of the terylene, chitosan simultaneously reacts with the interior and the surface of the terylene, at the moment, the terylene fabric and the chitosan both present special forms, the capture of the chitosan to the silane coupling agent is enhanced, the coupling reaction is promoted, and the coloring of the nano particles is further enhanced. The high-temperature oil bath not only ensures better dyeing of the polyester fabric, but also ensures more uniform dyeing.
In a high-temperature oil bath environment (anhydrous environment, the dyeing capability of the terylene is enhanced), the coupling speed of the nano particles and the terylene is further improved.
The dyeing time is not suitable to be too long, and the main body of the K/S value of the polyester fabric is in a trend of descending firstly and then ascending and then descending along with the increase of the dyeing time, which is mainly because: under a certain temperature, the longer the dyeing time is, the larger the damage to the polyester fabric and the chitosan macromolecule is, and the connection mode of the chitosan and the polyester fabric is damaged, so that the polyester fabric has lost the dyeing performance of the original fabric.
Wherein the components of the high-temperature oil bath are vegetable oil, silicone oil or alcohols. Vegetable oils include, but are not limited to, one or more of canola oil, peanut oil, blend oil, olive oil, sesame oil, corn oil; the silicone oil includes, but is not limited to, one or more of methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen silicone oil, methyl phenyl silicone oil, methyl chlorophenyl silicone oil, methyl ethoxy silicone oil, methyl trifluoropropyl silicone oil, methyl vinyl silicone oil, methyl hydroxyl silicone oil, ethyl hydrogen silicone oil, hydroxyl hydrogen silicone oil, and cyano silicone oil; the alcohol is polyethylene glycol.
The high-temperature oil bath is preferably silicone oil, and then vegetable oil, and the effect of alcohols is not as good as that of silicone oil and vegetable oil, probably because a large amount of hydroxyl groups in the alcohols influence the coupling of nano particles and polyester fabrics, and further influence the dyeing of the polyester fabrics.
S5, dyeing post-treatment:
And (3) putting the dyed polyester fabric obtained in the step (S4) into ethanol, washing for 30-50min at 60-100 ℃, removing impurities such as greasy dirt on the surface and in the dyed polyester fabric, and drying at 80-120 ℃ to obtain the clean dyed polyester fabric.
The invention is described in detail below by means of several examples:
Example 1
S1, pretreatment of polyester fabric:
10g of polyester fabric is soaked in 200mL of chitosan solution with the concentration of 4wt percent, soaked for 30min at 40 ℃, and baked for 20min at 90 ℃; washing the polyester fabric treated by the chitosan solution until the pH value of the washing residual liquid is neutral, and then drying at 80 ℃ to obtain the surface-activated pretreated polyester fabric.
S2, modifying the nano inorganic pigment:
adding 10g cobalt blue nano particles into 100mL of acetone, stirring for 5min, uniformly dispersing the cobalt blue nano particles in the acetone, adding 8mL of silane coupling agent KH570 into the mixture, stirring for 8-16h, filtering, washing the mixture with acetone for 4 times, vacuum drying the mixture at 60 ℃ for 7h, and grinding the mixture to obtain the modified nano inorganic pigment.
The cobalt blue nano particles have higher specific surface area and are easier to modify; and the cobalt blue nano particles are environment-friendly pigments, and can be used for food packaging and living goods. In addition, cobalt blue nanoparticles belong to spinel type inorganic pigments and have high stability.
S3, coupling:
And (2) dissolving the modified nano inorganic pigment obtained in the step (S2) in acetone to prepare a solution of 3g/100ml, stirring for 30min, adding 10g of the modified nano inorganic pigment obtained in the step (S1) to obtain the pretreated polyester fabric, carrying out ultrasonic vibration treatment for 50min, and drying to obtain the coupled polyester fabric.
S4, high-temperature oil bath dyeing:
and (3) placing the coupled polyester fabric obtained in the step (S3) in a constant-temperature oil bath of methyl silicone oil at the temperature of 200 ℃ to react for 30 seconds to obtain the dyed polyester fabric.
S5, dyeing post-treatment:
And (3) putting the dyed polyester fabric obtained in the step (S4) into ethanol, washing for 40min at 80 ℃, removing impurities such as greasy dirt on the surface and in the dyed polyester fabric, and drying at 100 ℃ to obtain the clean dyed polyester fabric.
Fig. 1 is a physical diagram of the polyester dyed fabric prepared in the example. As can be seen from FIG. 1, the dyed polyester fabric prepared by the method has uniform color and bright color.
Examples 2 to 10
Compared with the embodiment 1, the inorganic pigment dyeing method for the polyester textile is different in that in the step S1, the concentration of chitosan solution, the soaking time, the baking temperature and the baking time are different, and the other steps are substantially the same as those in the embodiment 1, and are not repeated herein.
The polyester prepared in examples 1 to 10 was subjected to performance test, and the results are shown in Table 1:
TABLE 1 dyeing Dacron related Properties prepared in examples 1-10
As can be seen from Table 1, the K/S values of the obtained polyester fabrics were gradually increased and then remained substantially unchanged as the chitosan concentration (examples 1 to 4), the soaking time (examples 1,5, 6), the baking temperature (examples 1, 7, 8) and the baking time (examples 1, 9, 10) were increased. The method is mainly characterized in that as the concentration or soaking time of chitosan is increased, the more the quantity of chitosan combined on the surface of the polyester fabric is, the more fully the chitosan reacts with the polyester fabric when the polyester fabric is dyed by high-temperature oil bath, the greater the morphological change of the chitosan and the polyester fabric is, the K/S value of the obtained polyester fabric is gradually increased, namely the better the dyeing effect of the polyester fabric is; however, after the chitosan solution is increased to a certain degree (8 wt%) or the soaking time reaches a certain degree (45 min), the chitosan attached to the surface of the polyester fabric is almost saturated, the increase of the concentration of the chitosan solution can not promote the attachment of the chitosan, and the forms of the chitosan, the chitosan of the polyester fabric and the polyester fabric are not changed when the polyester fabric is dyed by a high-temperature oil bath. The combination of the polyester and the chitosan is enhanced along with the increase of the baking temperature or the baking time, and the K/S value of the obtained polyester fabric is gradually increased, namely the dyeing effect of the polyester fabric is better; but with further increases in baking temperature or baking time, it no longer works for the binding of dacron to chitosan.
The difference between the inorganic pigment dyeing method of embodiments 11-12 and the embodiment 1 is that in the step S3, the temperature and the reaction time of the high temperature oil bath are different, and the other is substantially the same as that of embodiment 1, and the description thereof will not be repeated.
The polyester prepared in examples 11 to 12 was subjected to performance test, and the results are shown in the following Table 2:
TABLE 2 related Properties of dyed Dacron prepared in examples 11-12
| Examples | Temperature of high temperature oil bath (. Degree. C.) | Dyeing time | K/S |
| Example 11 | 180 | 30 | 7.2 |
| Example 12 | 220 | 30 | 6.1 |
As can be seen from Table 2, the K/S values of the obtained polyester fabrics were gradually increased and then significantly decreased as the temperature of the high-temperature oil bath was increased (examples 1, 11, 12). The method is mainly characterized in that the polyester fiber is quickly swelled along with the increase of the high-temperature oil bath temperature, the chitosan reacts with the polyester more fully, the color absorbing and dyeing capability is obviously enhanced, the K/S value of the polyester fabric shows a remarkable rising trend, but after the temperature exceeds 200 ℃, the structure and the original high molecular form of the polyester fiber are completely destroyed due to the overhigh temperature, the combination mode of the chitosan and the polyester is destroyed, the combination of the chitosan and the polyester fabric is weakened, part of chitosan falls off, and the polyester fabric loses the special surface structure; the chitosan is likely to be degraded due to the too high temperature, the original activity is lost, and the coupling reaction with the silane coupling agent is weakened.
Comparative example 1
The inorganic pigment dyeing method for terylene textile is different from example 1 in that the chitosan pretreatment step of step S1 is not performed, and the other steps are substantially the same as those of example 1, and are not repeated here. The K/S value of the obtained polyester fabric is 3.2, so that the chitosan and the polyester fabric are chemically coupled in a high-temperature oil bath, the structures of the chitosan and the polyester fabric are changed, the coupling reaction is promoted, the K/S value of the polyester fabric is increased, and the color of the polyester fabric is further increased.
Comparative example 2
Compared with the embodiment 1, the inorganic pigment dyeing method for the polyester textile is different in that the high-temperature oil bath dyeing step of the step S4 is not performed, and the dyeing is performed in the room-temperature oil bath, and the other steps are substantially the same as the embodiment 1 and are not repeated. The K/S value of the obtained polyester fabric is 2.9, so that the connection mode of chitosan and polyester can be changed only by high-temperature oil bath dyeing, the structures of chitosan and polyester can be changed, and the dyeing effect of the polyester fabric can be finally improved.
Examples 11 to 13
Compared with the embodiment 1, the inorganic pigment dyeing method for the polyester textile is different in that in the step S2, the inorganic pigment used in the embodiment 11 is titanium nickel yellow nanoparticle, the inorganic pigment used in the embodiment 12 is titanium iron black nanoparticle, the inorganic pigment used in the embodiment 13 is titanium complex brown nanoparticle, and the other steps are substantially the same as those in the embodiment 1, and are not repeated herein.
Fig. 2 to 4 show physical diagrams of the dyed polyester prepared in examples 11 to 13, respectively, and the obtained dyed polyester fabric has uniform color and bright color.
In summary, according to the inorganic pigment dyeing method for the polyester textile, the chitosan pretreatment process and the high-temperature oil bath dyeing process are combined, so that the polyester textile and the chitosan are chemically crosslinked, meanwhile, the structures of the chitosan and the polyester are changed, the chitosan and the coupling agent connected with the nano particles react more fully, and the obtained polyester textile has good dyeing effect and high color fastness; based on the high dispersibility of the nano particles, the color and luster of the polyester fabric are uniform; the silane coupling agent is used for modifying the nano particles and then reacting with the polyester fabric, so that incomplete coupling, uneven dyeing and the like caused by mixing the nano particles, the polyester fabric and the silane coupling agent at the same time are avoided, and the color uniformity is further improved; the polyester fabric and the nano particles are modified, so that the silane coupling agent is combined together, and the reaction flow is simple; the traditional dye liquor and various auxiliary agents are not needed in the reaction process, the cost is low, and the method is green and pollution-free.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention.
Claims (6)
1. An inorganic pigment dyeing method for terylene textile is characterized in that: the method comprises the following steps:
S1, pretreatment of polyester fabric: soaking 8-12g of polyester fabric in 0.5-10wt% chitosan solution, washing and drying to obtain pretreated polyester fabric; before pretreatment of the polyester fabric with chitosan, pretreatment of alkali liquor is carried out, and active groups and surface roughness of the polyester fabric are increased;
S2, modifying the nano inorganic pigment: uniformly dispersing the nano inorganic pigment in acetone, adding a silane coupling agent accounting for 3% -5% of the volume of the acetone, stirring for 8-16h, and filtering, cleaning, drying and grinding to obtain a modified nano inorganic pigment; the nano inorganic pigment is one or more of cobalt blue nano particles, titanium nickel yellow nano particles, ferrosilicon red nano particles, cobalt green nano particles, copper chromium black nano particles, titanium complex brown nano particles and ferrotitanium black nano particles;
S3, coupling: preparing the modified nano inorganic pigment obtained in the step S2 into a solution with the concentration of 2-4g/100mL, stirring, adding the pretreated polyester fabric obtained in the step S1, performing ultrasonic treatment and drying to obtain a coupled polyester fabric;
S4, high-temperature oil bath dyeing: placing the coupled polyester fabric obtained in the step S3 in a constant-temperature oil bath at 200 ℃ to react for 5-60S to obtain a dyed polyester fabric; the components of the high-temperature oil bath are vegetable oil, silicone oil or alcohols.
2. The method for dyeing polyester textile with inorganic pigment according to claim 1, wherein: the vegetable oil comprises one or more of rapeseed oil, peanut oil, blend oil, olive oil, sesame oil and corn oil; the silicone oil comprises one or more of methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen silicone oil, methyl phenyl silicone oil, methyl chlorophenyl silicone oil, methyl ethoxy silicone oil, methyl trifluoropropyl silicone oil, methyl vinyl silicone oil, methyl hydroxyl silicone oil, ethyl hydrogen silicone oil, hydroxyl hydrogen silicone oil and cyano silicone oil; the alcohol is polyethylene glycol.
3. The method for dyeing polyester textile with inorganic pigment according to claim 1, wherein: the concentration of the chitosan solution in the step S1 is 4-8wt%.
4. The method for dyeing polyester textile with inorganic pigment according to claim 1, wherein: the silane coupling agent in step S2 includes KH550, KH570, KH580; the drying is vacuum drying.
5. The method for dyeing polyester textile with inorganic pigment according to claim 1, wherein: the solvent for dissolving the modified nano inorganic pigment in the step S3 comprises water, ethanol and acetone.
6. The method for dyeing polyester textile with inorganic pigment according to claim 1, wherein: the method also comprises the following steps:
S5, dyeing post-treatment: and (3) putting the dyed polyester fabric obtained in the step (S4) into ethanol for washing and drying to obtain clean dyed polyester fabric.
Priority Applications (1)
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| CN108560259A (en) * | 2018-04-18 | 2018-09-21 | 上海工程技术大学 | A method of improving nano-ZnO binding strength on modified dacron fabric |
| CN111826972A (en) * | 2020-06-08 | 2020-10-27 | 武汉纺织大学 | A kind of fast dyeing method of polyester textile |
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| CN111535049B (en) * | 2020-06-08 | 2022-05-17 | 武汉纺织大学 | A kind of inorganic pigment dyeing method of cotton textile |
| CN111733591B (en) * | 2020-06-24 | 2023-03-31 | 上海工程技术大学 | Method for controlling growth of spherical zinc oxide on modified polyester fabric |
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| CN108560259A (en) * | 2018-04-18 | 2018-09-21 | 上海工程技术大学 | A method of improving nano-ZnO binding strength on modified dacron fabric |
| CN111826972A (en) * | 2020-06-08 | 2020-10-27 | 武汉纺织大学 | A kind of fast dyeing method of polyester textile |
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