阅读说明：本技术 一种涤纶布料的染色工艺 (Dyeing process of polyester cloth ) 是由 杨华 赖剑飞 夏克胜 于 2020-12-17 设计创作，主要内容包括：本申请涉及布料染色的技术领域,具体公开了一种涤纶布料的染色工艺,将涤纶坯布进行如下步骤进行：S1：预定型；S2：退浆；S3：水洗中和；S4：染色,将水洗中和后的坯布进行染色,所用染料的各物质以重量份计为：分散染料15-25份、分散剂10-20份、丙三醇2-6份、马来酸二辛酯1-3份、二甘醇二苯甲酸酯3-8份、匀染剂40-80份、醋酸3-9份以及水150-210份；S5：洗涤；S6：脱水；S7：开幅；S8：定型；经过S8定型后的坯布即为染色完毕的涤纶布料。通过在染液中添加马来酸二辛酯、二甘醇二苯甲酸酯以及丙三醇,最终能够提高涤纶布料的色牢度。(The application relates to the technical field of cloth dyeing, and particularly discloses a dyeing process of polyester cloth, which comprises the following steps of: s1: presetting; s2: desizing; s3: washing and neutralizing; s4: dyeing, namely dyeing the grey cloth neutralized by water washing, wherein the used dyes comprise the following components in parts by weight: 15-25 parts of disperse dye, 10-20 parts of dispersant, 2-6 parts of glycerol, 1-3 parts of dioctyl maleate, 3-8 parts of diethylene glycol dibenzoate, 40-80 parts of leveling agent, 3-9 parts of acetic acid and 150 parts of water ion 210; s5: washing; s6: dehydrating; s7: scutching; s8: shaping; and the grey cloth shaped by S8 is the dyed polyester cloth. By adding dioctyl maleate, diethylene glycol dibenzoate and glycerol into the dye solution, the color fastness of the polyester fabric can be improved finally.)

1. A dyeing process of polyester cloth is characterized in that: the method comprises the following steps of:

s1: presetting, namely presetting the grey cloth;

s2: desizing, namely desizing the grey cloth treated by the S1;

s3: washing and neutralizing, namely washing and neutralizing the grey cloth treated by the S2;

s4: dyeing, namely dyeing the grey cloth neutralized by water washing, wherein the used dyes comprise the following components in parts by weight: 15-25 parts of disperse dye, 10-20 parts of dispersant, 2-6 parts of glycerol, 1-3 parts of dioctyl maleate, 3-8 parts of diethylene glycol dibenzoate, 40-80 parts of leveling agent, 3-9 parts of acetic acid and 150 parts of water ion 210;

s5: washing, namely washing the grey cloth treated by the S4;

s6: dehydrating, namely dehydrating the grey cloth processed by the S5;

s7: scutching, namely scutching the grey cloth processed by the S6;

s8: shaping, namely shaping the grey cloth processed by the S7;

and the grey cloth shaped by S8 is the dyed polyester cloth.

2. The dyeing process of the polyester cloth according to claim 1, which is characterized in that: the dispersant is sodium lignosulfonate.

3. The dyeing process of the polyester cloth according to claim 2, characterized in that: the dispersing agent also comprises sodium dodecyl benzene sulfonate and sodium succinate, and the mass ratio of the sodium lignin sulfonate, the sodium dodecyl benzene sulfonate and the diisostearyl malate is 4:8: 3.

4. The dyeing process of the polyester cloth according to claim 3, characterized in that: the leveling agent comprises dithioidene diacetic acid, octadecyl isocyanate and dipentaerythritol hexahydroxystearate in parts by weight, and the mass ratio of the dithioidene diacetic acid to the octadecyl isocyanate to the dipentaerythritol hexahydroxystearate is 3:9: 2.

5. The dyeing process of the polyester cloth according to claim 1, which is characterized in that: the S5 wash includes the steps of:

a. washing the grey cloth dyed by the S4 with clear water for 15-30 min;

b. and conveying the grey cloth washed by the clear water into water containing a reducing agent for reduction cleaning, wherein the temperature of liquid is kept at 40-50 ℃ during reduction cleaning of the grey cloth, and the grey cloth is continuously cleaned for 25 min.

6. The dyeing process of the polyester cloth according to claim 5, characterized in that: the reducing agent comprises the following substances in parts by weight: 45-50 parts of sodium hydrosulfite, 43-50 parts of sodium bicarbonate, 20-30 parts of octyl dodecanol lanolin acid ester and 23-27 parts of sodium sulfate.

7. The dyeing process of the polyester cloth according to claim 1, which is characterized in that: and S1 pre-shaping, namely pre-shaping the grey cloth in a heat-shaping machine, adjusting the temperature of the heat-shaping machine to 160 ℃, pre-shaping for 4-5min, cooling to room temperature, and performing S2 desizing.

8. The dyeing process of the polyester cloth according to claim 1, which is characterized in that: s8, setting, namely putting the grey cloth after the scutching in the S7 mode into a heat setting machine, adjusting the temperature of the heat setting machine to 210 ℃, preserving the heat for 3min, cooling after the heat setting, wherein the cooling temperature is 25 ℃, and the cooling time is 1.5 h.

Technical Field

The application relates to the technical field of cloth dyeing, in particular to a dyeing process of polyester cloth.

Background

Terylene is a synthetic fiber with wide application and excellent comprehensive performance in textiles. Sizing is carried out before weaving the polyester filament fabric, so that the surface of a strand silk is coated with a smooth, flexible and firm size film to enhance the cohesive force and the wear resistance of the polyester filament, so that the polyester filament fabric can bear various friction forces and tension forces in the weaving process, and the weaving production is smoothly carried out under the requirements of high quality and high yield.

The polyester fiber is a hydrophobic fiber made of polyethylene terephthalate, and cannot be dyed by direct dyes, acid dyes, basic dyes and the like due to the fact that polyester molecular chain structures are compact and hydrophilic groups such as carboxyl groups, sulfo groups and the like are lacked, and most of the existing dyeing methods adopt disperse dyes for dyeing under the conditions of high temperature and high pressure, hot melting or existence of carriers.

Since the polyester fiber adopts the disperse dye, and the gaps among the polyester fiber molecules are small and lack of hydrophilic groups, the color fastness of the polyester fabric dyed by the disperse dye is low, and therefore, a dyeing process of the polyester fabric with high color fastness is urgently needed.

Disclosure of Invention

In order to solve the problem of low color fastness of the polyester cloth, the application provides a dyeing process of the polyester cloth.

The application provides a dyeing process of dacron cloth, adopts following technical scheme:

a dyeing process of polyester cloth is carried out by carrying out the following steps on polyester grey cloth:

s1: presetting, namely presetting the grey cloth;

s2: desizing, namely desizing the grey cloth treated by the S1;

s3: washing and neutralizing, namely washing and neutralizing the grey cloth treated by the S2;

s4: dyeing, namely dyeing the grey cloth neutralized by water washing, wherein the used dyes comprise the following components in parts by weight: 15-25 parts of disperse dye, 10-20 parts of dispersant, 2-6 parts of glycerol, 1-3 parts of dioctyl maleate, 3-8 parts of diethylene glycol dibenzoate, 40-80 parts of leveling agent, 3-9 parts of acetic acid and 150 parts of water ion 210;

s5: washing, namely washing the grey cloth treated by the S4;

s6: dehydrating, namely dehydrating the grey cloth processed by the S5;

s7: scutching, namely scutching the grey cloth processed by the S6;

s8: shaping, namely shaping the grey cloth processed by the S7;

and the grey cloth shaped by S8 is the dyed polyester cloth.

By adopting the technical scheme, the disperse dye belongs to the special dye for the polyester cloth due to small molecular structure volume, and can be dyed among polyester fiber molecules under the action of the dispersing agent. The glycerol is an excellent wetting agent and penetrating agent, and has a wetting effect on the disperse dye on one hand, and can enhance the permeability of the disperse dye in the polyester fiber on the other hand, so that the dye uptake of the disperse dye in the polyester fiber molecules can be increased. The dioctyl maleate can promote the dispersibility of the disperse dye in water, and simultaneously, the dioctyl maleate and the diethylene glycol dibenzoate act together to improve the intermolecular acting force between the disperse dye and polyester fiber molecules, so that the bonding fastness between the disperse dye and the polyester fiber is improved, and the color fastness of the disperse dye to polyester cloth can be finally improved.

Due to the existence of the leveling agent, the polyester fiber can be dyed by the disperse dye more uniformly, and the generation of loose color after dyeing of the polyester cloth is reduced, so that the decolorization in the washing process of the subsequent polyester cloth is less, and the waste of the disperse dye is reduced.

As a further improvement of the present invention, the dispersant is sodium lignosulfonate.

By adopting the technical scheme, the sodium lignosulfonate can promote the disperse dye to be uniformly dispersed in the dye solution, so that the disperse dye is prevented from agglomerating. Meanwhile, due to the existence of the glycerol, the dispersion effect of the sodium lignosulfonate in the dye liquor can be improved, so that the disperse dye can be dispersed more uniformly.

As a further improvement of the invention, the dispersant also comprises sodium dodecyl benzene sulfonate and sodium succinate, and the mass ratio of the sodium lignin sulfonate, the sodium dodecyl benzene sulfonate and the diisostearyl malate is 4:8: 3.

By adopting the technical scheme, the sodium lignosulfonate and the sodium dodecyl benzene sulfonate act together to enable the disperse dye to have a compatibilization effect, and meanwhile, under the combined action of the diisostearyl malate, the sodium lignosulfonate and the sodium dodecyl benzene sulfonate, the disperse dye can be promoted to enter polyester fiber molecules more quickly, so that the dye uptake of the disperse dye to polyester fibers is improved.

As a further improvement of the invention, the leveling agent comprises dithionite diacetate, octadecyl isocyanate and dipentaerythritol hexahydroxystearate in parts by weight, and the mass ratio of the dithionite diacetate, the octadecyl isocyanate and the dipentaerythritol hexahydroxystearate is 3:9: 2.

By adopting the technical scheme, the dithionite, the octadecyl isocyanate and the dipentaerythritol hexahydroxy stearate jointly form the leveling agent, and the dithionite has strong wettability so that the disperse dye can be wetted more quickly; the octadecyl isocyanate is used as a nonionic surfactant, so that the migration property of the disperse dye is improved, and the migration property of the disperse dye is favorable for overcoming uneven dyeing caused in the dyeing process and producing a product with uniform dyeing. The dipentaerythritol hexahydroxy stearate serving as a surfactant can interact with the disperse dye, so that the disperse dye is prevented from being dyed into polyester fiber molecules, and the dyeing is uniform; the dithiodiglycolic diacetate has good diffusivity, and the dipentaerythritol hexahydroxy stearate and the octadecyl isocyanate can diffuse into polyester fiber molecules, so that the dye has a uniform dyeing effect. The three are combined for use, and the wet color fastness of the final polyester fabric can be improved.

Meanwhile, the dipentaerythritol hexahydroxystearate and the diisostearyl malate are combined with each other, so that the speed of the disperse dye moving on the polyester cloth can be promoted, and the dye uptake of the polyester cloth is remarkably improved.

As a further improvement of the present invention, the S5 washing comprises the following steps:

a. washing the grey cloth dyed by the S4 with clear water for 15-30 min;

b. and conveying the grey cloth washed by the clear water into water containing a reducing agent for reduction cleaning, wherein the temperature of liquid is kept at 40-50 ℃ during reduction cleaning of the grey cloth, and the grey cloth is continuously cleaned for 25 min.

As a further improvement of the invention, the reducing agent comprises the following materials in parts by weight: 45-50 parts of sodium hydrosulfite, 43-50 parts of sodium bicarbonate, 20-30 parts of octyl dodecanol lanolin acid ester and 23-27 parts of sodium sulfate.

By adopting the technical scheme, some undyed dyes on the surface of the fabric are washed off by using clear water for the dyed grey cloth, then the dyed grey cloth is subjected to reduction cleaning, some floating colors on the polyester cloth can be washed off, the phenomenon of color fading of the subsequent polyester cloth in the using process is prevented, and the color fastness of the polyester cloth can be improved by adding octyl dodecanol lanolin acid ester into a reducing agent under the action of sodium carbonate and sodium sulfate.

As a further improvement of the invention, the step of S1 pre-shaping comprises the steps of placing the grey cloth into a heat-setting machine for pre-shaping, adjusting the temperature of the heat-setting machine to 160 ℃, pre-shaping for 4-5min, cooling to room temperature, and then performing S2 desizing.

By adopting the technical scheme, the crease lines and the crease lines which are difficult to remove generated in the earlier stage production of the polyester cloth are removed by high temperature of 160 ℃ and heat preservation for 4-5min, and the size of the polyester cloth is fixed, so that the subsequent dyeing of the polyester cloth is more uniform.

As a further improvement of the invention, the process comprises the step of S8 sizing, the gray fabric which is subjected to the S7 scutching is placed into a heat setting machine, the temperature of the heat setting machine is adjusted to 210 ℃, the temperature is kept for 3min, and the gray fabric is cooled after heat setting, wherein the cooling temperature is 25 ℃ and the cooling time is 1.5 h.

By adopting the technical scheme, after the terylene cloth enters the heat setting machine, the temperature is kept for 3min after reaching 210 ℃, the size of the terylene cloth is completely stabilized, the warp deviation and the weft deviation of the terylene cloth can not occur, and the terylene cloth is also completely dried within the temperature and the time, so that the smooth, strong and stiff hand feeling of the terylene cloth is effectively enhanced; then cooling the polyester cloth to 25 ℃ after 1.5h, slowly cooling the polyester cloth, and preventing the cloth from being damaged due to too high cooling speed.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by adding dioctyl maleate, diethylene glycol dibenzoate and glycerol into the dye solution, the color fastness of the polyester fabric can be improved finally;

2. the leveling agent is defined as dithiolene diacetic acid, octadecyl isocyanate and dipentaerythritol hexahydroxy stearate, so that the wet color fastness of the final polyester cloth is improved under the condition of combining the dithiolene diacetic acid, the octadecyl isocyanate and the dipentaerythritol hexahydroxy stearate;

3. the dyed grey cloth is washed off with clear water to remove some undyed dyes on the surface of the cloth, then reduction washing is carried out, some floating colors on the polyester cloth can be washed off, the phenomenon that the subsequent polyester cloth loses color in the using process is prevented, and the color fastness of the polyester cloth can be improved by adding octyl dodecanol lanolin acid ester into a reducing agent under the action of sodium carbonate and sodium sulfate.

Drawings

FIG. 1 is a process flow diagram of a dyeing process of a polyester fabric.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples.

The raw material components of the present invention are shown in table 1.

TABLE 1

Example 1:

referring to fig. 1, the embodiment discloses a dyeing process of a polyester fabric, which is to perform the following steps on an unwound polyester grey fabric:

s1: and (4) presetting. The selected grey cloth is conveyed into a heat setting machine, the temperature of the heat setting machine is adjusted to 130 ℃, the temperature lasts for 4.5min, and then the polyester cloth is cooled to the room temperature.

S2: and (6) desizing. And (4) placing the pre-shaped grey cloth into a padding machine. Then desizing liquid is added, and the chemical composition of each substance of the desizing liquid is 40g/L of caustic soda and 10g/L of deoiling refining agent. When adding, firstly adding caustic soda into a padding machine, and stirring for 10 min; then adding the deoiling refining agent into a padding machine, controlling the bath ratio to be 1:30, and stirring for 30 min; the greige goods were then padded in a padding machine for 7 hours. The deoiling refining agent is Goon107 sold by Jiahong organosilicon science and technology Limited of Dongguan city. The caustic soda is sold by Binzhou Runfan chemical Co.

S3: and (5) washing with water for neutralization. And (3) washing the desized grey fabric in a washing machine for a plurality of times, measuring the pH value of the surface of the grey fabric by using a pH meter, and stopping washing neutralization when the pH value of the surface of the grey fabric is 6.

S4: and (6) dyeing. 20 parts of disperse dye, 15 parts of dispersing agent, 60 parts of leveling agent, 4 parts of glycerol, 6 parts of acetic acid, 2 parts of dioctyl maleate, 5 parts of diethylene glycol dibenzoate and 180 parts of water are added into a dyeing machine in no sequence. Wherein the dispersant is dispersant MF, the leveling agent is octadecyl isocyanate, and the disperse dye is disperse blue 2BLN sold by Henan to Kenren chemical Co. The bath ratio was 1:35 and the temperature of the dye liquor in the dyeing machine was controlled to 130 ℃.

S5: and (6) washing. The washing comprises the following steps:

and washing the grey cloth dyed by the S4 with clear water for 23 min.

S6: and (4) dehydrating. And (4) washing the grey cloth treated by the S5 with clear water for 8min, and then conveying the grey cloth into a dehydrating machine for dehydrating for 15 min.

S7: and (5) scutching. And the dehydrated grey cloth is conveyed to an expanding machine for expanding, so that the performance of the expanded grey cloth is more stable.

S8: and (6) shaping. And (3) placing the opened gray fabric into a heat setting machine for final setting, adjusting the temperature of the heat setting machine to 180 ℃, keeping the temperature for 3min, then opening the heat setting machine after the temperature in the heat setting machine is reduced to 25 ℃, and cooling for 1.5 h.

And (5) performing quality detection and then rolling.

Example 2:

the difference from the example 1 is that sodium lignosulfonate is used as the dispersing agent in the S4 dyeing.

Example 3:

the difference from example 1 is that the dispersant in the S4 dyeing comprises sodium lignosulfonate, sodium dodecylbenzenesulfonate and diisostearyl malate, and the mass ratio of the three is 4:8: 3.

Example 4:

the difference from example 3 is that the leveling agent in the S4 dyeing comprises dithiodiglycolic acid, octadecyl isocyanate and dipentaerythritol hexahydroxystearate, and the mass ratio of the dithiodiglycolic acid, the octadecyl isocyanate and the dipentaerythritol hexahydroxystearate is 3:9: 2.

Example 5:

the difference from example 1 is that the S5 washing comprises the following steps:

a. washing the grey cloth dyed by the S4 with clear water for 22 min;

b. and conveying the grey cloth washed by the clear water into water containing a reducing agent for reduction cleaning, wherein the liquid temperature is kept at 45 ℃ during reduction cleaning of the grey cloth, and the grey cloth is continuously cleaned for 25 min. The reducing agent is selected from reducing agents sold by Kyon chemical company, Shanghai, Kay, Ltd.

Example 6:

the difference from example 5 is that each of the reducing agents in step b of the S5 washing was 47 parts by weight of sodium hydrosulfite, 46 parts by weight of sodium bicarbonate, 25 parts by weight of octyldodecanol lanolin acid ester, and 25 parts by weight of sodium sulfate.

Example 7:

the difference from embodiment 1 is that the S1 presetting includes: the selected grey cloth is conveyed into a heat setting machine, the temperature of the heat setting machine is adjusted to 160 ℃, the temperature lasts for 4.5min, and then the polyester cloth is cooled to the room temperature.

Example 8:

the difference from example 1 is that the S8 sizing step includes: and (3) placing the opened gray fabric into a heat setting machine for final setting, adjusting the temperature of the heat setting machine to 210 ℃, keeping the temperature for 3min, then opening the heat setting machine after the temperature in the heat setting machine is reduced to 25 ℃, and cooling for 1.5 h.

Example 9:

the dyeing process of the polyester cloth comprises the following steps of:

s1: and (4) presetting. The selected grey cloth is conveyed into a heat setting machine, the temperature of the heat setting machine is adjusted to 160 ℃, the temperature lasts for 4.5min, and then the polyester cloth is cooled to the room temperature.

S2: and (6) desizing. And (4) placing the pre-shaped grey cloth into a padding machine. Then desizing liquid is added, and the chemical composition of each substance of the desizing liquid is 40g/L of caustic soda and 10g/L of deoiling refining agent. When adding, firstly adding caustic soda into a padding machine, and stirring for 10 min; then adding the deoiling refining agent into a padding machine, controlling the bath ratio to be 1:30, and stirring for 30 min; the greige goods were then padded in a padding machine for 7 hours. The deoiling refining agent is Goon107 sold by Jiahong organosilicon science and technology Limited of Dongguan city. The caustic soda is sold by Binzhou Runfan chemical Co.

S3: and (5) washing with water for neutralization. And (3) washing the desized grey fabric in a washing machine for a plurality of times, measuring the pH value of the surface of the grey fabric by using a pH meter, and stopping washing neutralization when the pH value of the surface of the grey fabric is 6.

S4: and (6) dyeing. 20 parts of disperse dye, 15 parts of dispersing agent, 60 parts of leveling agent, 4 parts of glycerol, 6 parts of acetic acid, 2 parts of dioctyl maleate, 5 parts of diethylene glycol dibenzoate and 180 parts of water are added into a dyeing machine in no sequence. Wherein the dispersant comprises sodium lignosulfonate, sodium dodecyl benzene sulfonate and diisostearyl malate, and the mass ratio of the sodium lignosulfonate to the diisostearyl malate is 4:8: 3; the leveling agent comprises dithioidene diacetic acid, octadecyl isocyanate and dipentaerythritol hexahydroxy stearate, and the mass ratio of the dithioidene diacetic acid to the octadecyl isocyanate to the dipentaerythritol hexahydroxy stearate is 3:9: 2; the disperse dye is disperse blue 2BLN sold by Henan to Kenren chemical Co. The bath ratio was 1:35 and the temperature of the dye liquor in the dyeing machine was controlled to 130 ℃.

S5: and (6) washing. The method comprises the following steps:

a. washing the grey cloth dyed by the S4 with clear water for 22 min;

b. and conveying the grey cloth washed by the clear water into water containing a reducing agent for reduction cleaning, wherein the liquid temperature is kept at 45 ℃ during reduction cleaning of the grey cloth, and the grey cloth is continuously cleaned for 25 min. The reducing agent comprises 47 parts by weight of sodium hydrosulfite, 46 parts by weight of sodium bicarbonate, 25 parts by weight of octyl dodecanol lanolin acid ester and 25 parts by weight of sodium sulfate.

S6: and (4) dehydrating. And (4) washing the grey cloth treated by the S5 with clear water for 8min, and then conveying the grey cloth into a dehydrating machine for dehydrating for 15 min.

S7: and (5) scutching. And the dehydrated grey cloth is conveyed to an expanding machine for expanding, so that the performance of the expanded grey cloth is more stable.

S8: and (6) shaping. And (3) placing the opened gray fabric into a heat setting machine for final setting, adjusting the temperature of the heat setting machine to 210 ℃, keeping the temperature for 3min, then opening the heat setting machine after the temperature in the heat setting machine is reduced to 25 ℃, and cooling for 1.5 h.

And (5) performing quality detection and then rolling.

Examples 10 to 13 are different from example 1 in that the respective materials of the dye in the dyeing of S4 are shown in Table 2 in parts by weight. Unit: portions are

TABLE 2

	Example 10	Example 11	Example 12	Example 13
					Disperse dyes	15	25	18	23
Dispersing agent	10	20	13	18
					Glycerol	2	6	3	5
Maleic acid dioctyl ester	1	3	2	2
					Diethylene glycol dibenzoate	3	8	4	6
Leveling agent	40	80	50	70
					Acetic acid	3	9	5	7
Water (W)	150	210	165	195

Examples 14-15 differ from example 5 in that the duration of the rinse in step a in the step S5 wash is shown in table 3. Unit: min

TABLE 3

Examples	Example 14	Example 15
			Time of rinsing	15	30

Examples 16-17 differ from example 5 in that the temperature at which the fabric is held during the reduction washing of the fabric in step b of the washing in step S5 is shown in table 4. Unit: c

TABLE 4

Examples	Example 16	Example 17
			Temperature of	40	50

Examples 18 to 21 are different from example 6 in that the respective contents of the reducing agent in step b in the washing of S5 are shown in Table 5 in parts by weight. Unit: portions are

TABLE 5

	Example 18	Example 19	Example 20	Example 21
					Sodium hydrosulfite	45	50	46	49
Sodium bicarbonate	43	50	44	48
					Octyl dodecanol lanolin acid ester	20	30	23	28
Sodium sulfate	23	27	24	26

Comparative example 1:

the difference from example 1 is that the dye does not contain dioctyl maleate and diethylene glycol dibenzoate in the dyeing of step S4.

Comparative example 2:

the difference from example 1 is that the dye does not contain dioctyl maleate in the dyeing of step S4.

Comparative example 3:

the difference from example 1 is that the dye does not contain diethylene glycol dibenzoate in the dyeing in step S4.

Comparative example 4:

the difference from example 4 is that the dispersant used in the dyeing in step S4 does not contain diisostearyl malate.

Comparative example 5:

the difference from example 4 is that the leveling agent in the dyeing of step S4 does not contain dipentaerythritol hexahydroxystearate.

And (3) performance detection:

detecting a sample: the terylene fabrics obtained in examples 1 to 21 were used as test samples, and the terylene fabrics obtained in comparative examples 1 to 5 were used as control samples.

The detection method comprises the following steps: the polyester fabrics obtained in examples 1 to 21 and the polyester fabrics obtained in comparative examples 1 to 5 were subjected to a crockfastness test of the fabrics by a crockfastness tester in accordance with the standard of GB/T3920-1997, and the data results are shown in Table 6.

And (3) calculating the dye uptake: measuring on a 723 type spectrophotometer by a raffinate method, and calculating the dye uptake at the T moment: the dye uptake E ═ [ (A)₀-A_T)/A₀]X is 100%; in the formula: a. the₀The absorbance of the original solution; a. the_TThe absorbance of the stain residue at time T was obtained and the data results are reported in table 6.

TABLE 6

As can be seen from the data of example 1 and comparative example 1 of table 6, a significant improvement can be achieved by adding dioctyl maleate and diethylene glycol dibenzoate to the dye.

By observing the data in table 6, which is a comparison of examples 4, 1 and 9, the dye uptake and color fastness of polyester cloth can be improved by defining leveling agents as dithiodiglycolic acid, octadecyl isocyanate and dipentaerythritol hexahydrostearate and dispersants as sodium lignosulfonate, sodium dodecylbenzenesulfonate and diisostearyl malate in the dyes.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.